The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Analysis based on the mathematical function first formulated by Jean-Baptiste-Joseph Fourier in 1807. The function, known as the Fourier transform, describes the sinusoidal pattern of any fluctuating pattern in the physical world in terms of its amplitude and its phase. It has broad applications in biomedicine, e.g., analysis of the x-ray crystallography data pivotal in identifying the double helical nature of DNA and in analysis of other molecules, including viruses, and the modified back-projection algorithm universally used in computerized tomography imaging, etc. (From Segen, The Dictionary of Modern Medicine, 1992)
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.
A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.
Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
Analysis of the intensity of Raman scattering of monochromatic light as a function of frequency of the scattered light.
Severe distortions in the development of many basic psychological functions that are not normal for any stage in development. These distortions are manifested in sustained social impairment, speech abnormalities, and peculiar motor movements.
An umbrella term used to describe a pattern of disabilities and abnormalities that result from fetal exposure to ETHANOL during pregnancy. It encompasses a phenotypic range that can vary greatly between individuals, but reliably includes one or more of the following: characteristic facial dysmorphism, FETAL GROWTH RETARDATION, central nervous system abnormalities, cognitive and/or behavioral dysfunction, BIRTH DEFECTS. The level of maternal alcohol consumption does not necessarily correlate directly with disease severity.
A disorder beginning in childhood. It is marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest. Manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual. (DSM-V)
Sequential operating programs and data which instruct the functioning of a digital computer.
The assessing of academic or educational achievement. It includes all aspects of testing and test construction.
Diseases caused by abnormal function of the MITOCHONDRIA. They may be caused by mutations, acquired or inherited, in mitochondrial DNA or in nuclear genes that code for mitochondrial components. They may also be the result of acquired mitochondria dysfunction due to adverse effects of drugs, infections, or other environmental causes.
An aberration in which an extra chromosome or a chromosomal segment is made.
Electron transfer through the cytochrome system liberating free energy which is transformed into high-energy phosphate bonds.
A de novo myeloproliferation arising from an abnormal stem cell. It is characterized by the replacement of bone marrow by fibrous tissue, a process that is mediated by CYTOKINES arising from the abnormal clone.
A disorder beginning in childhood whose essential features are persistent impairment in reciprocal social communication and social interaction, and restricted, repetitive patterns of behavior, interests, or activities. These symptoms may limit or impair everyday functioning. (From DSM-5)
The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
Exclusive legal rights or privileges applied to inventions, plants, etc.
Uptake of substances through the lining of the INTESTINES.
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
A stack of flattened vesicles that functions in posttranslational processing and sorting of proteins, receiving them from the rough ENDOPLASMIC RETICULUM and directing them to secretory vesicles, LYSOSOMES, or the CELL MEMBRANE. The movement of proteins takes place by transfer vesicles that bud off from the rough endoplasmic reticulum or Golgi apparatus and fuse with the Golgi, lysosomes or cell membrane. (From Glick, Glossary of Biochemistry and Molecular Biology, 1990)
A specialized field of physics and engineering involved in studying the behavior and properties of light and the technology of analyzing, generating, transmitting, and manipulating ELECTROMAGNETIC RADIATION in the visible, infrared, and ultraviolet range.
Disciplines that apply sciences to law. Forensic sciences include a wide range of disciplines, such as FORENSIC TOXICOLOGY; FORENSIC ANTHROPOLOGY; FORENSIC MEDICINE; FORENSIC DENTISTRY; and others.
The application of genetic analyses and MOLECULAR DIAGNOSTIC TECHNIQUES to legal matters and crime analysis.
A violation of the criminal law, i.e., a breach of the conduct code specifically sanctioned by the state, which through its administrative agencies prosecutes offenders and imposes and administers punishments. The concept includes unacceptable actions whether prosecuted or going unpunished.
The application of pathology to questions of law.
Antigenic characteristics and DNA fingerprint patterns identified from blood stains. Their primary value is in criminal cases.
The application of medical knowledge to questions of law.
A dimension of auditory sensation varying with cycles per second of the sound stimulus.
Use of sound to elicit a response in the nervous system.
The audibility limit of discriminating sound intensity and pitch.
A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.
That component of SPEECH which gives the primary distinction to a given speaker's VOICE when pitch and loudness are excluded. It involves both phonatory and resonatory characteristics. Some of the descriptions of voice quality are harshness, breathiness and nasality.
A pair of cone-shaped elastic mucous membrane projecting from the laryngeal wall and forming a narrow slit between them. Each contains a thickened free edge (vocal ligament) extending from the THYROID CARTILAGE to the ARYTENOID CARTILAGE, and a VOCAL MUSCLE that shortens or relaxes the vocal cord to control sound production.
Pathological processes that affect voice production, usually involving VOCAL CORDS and the LARYNGEAL MUCOSA. Voice disorders can be caused by organic (anatomical), or functional (emotional or psychological) factors leading to DYSPHONIA; APHONIA; and defects in VOICE QUALITY, loudness, and pitch.
Conditions characterized by language abilities (comprehension and expression of speech and writing) that are below the expected level for a given age, generally in the absence of an intellectual impairment. These conditions may be associated with DEAFNESS; BRAIN DISEASES; MENTAL DISORDERS; or environmental factors.
The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.
Perception of three-dimensionality.
Genetic loci responsible for the encoding of histocompatibility antigens other than those encoded by the MAJOR HISTOCOMPATIBILITY COMPLEX. The antigens encoded by these genes are often responsible for graft rejection in cases where histocompatibility has been established by standard tests. The location of some of these loci on the X and Y chromosomes explains why grafts from males to females may be rejected while grafts from females to males are accepted. In the mouse roughly 30 minor histocompatibility loci have been recognized, comprising more than 500 genes.

Single atom modification (O-->S) of tRNA confers ribosome binding. (1/4744)

Escherichia coli tRNALysSUU, as well as human tRNALys3SUU, has 2-thiouridine derivatives at wobble position 34 (s2U*34). Unlike the native tRNALysSUU, the full-length, unmodified transcript of human tRNALys3UUU and the unmodified tRNALys3UUU anticodon stem/loop (ASLLys3UUU) did not bind AAA- or AAG-programmed ribosomes. In contrast, the completely unmodified yeast tRNAPhe anticodon stem/loop (ASLPheGAA) had an affinity (Kd = 136+/-49 nM) similar to that of native yeast tRNAPheGmAA (Kd = 103+/-19 nM). We have found that the single, site-specific substitution of s2U34 for U34 to produce the modified ASLLysSUU was sufficient to restore ribosomal binding. The modified ASLLysSUU bound the ribosome with an affinity (Kd = 176+/-62 nM) comparable to that of native tRNALysSUU (Kd = 70+/-7 nM). Furthermore, in binding to the ribosome, the modified ASLLys3SUU produced the same 16S P-site tRNA footprint as did native E. coli tRNALysSUU, yeast tRNAPheGmAA, and the unmodified ASLPheGAA. The unmodified ASLLys3UUU had no footprint at all. Investigations of thermal stability and structure monitored by UV spectroscopy and NMR showed that the dynamic conformation of the loop of modified ASLLys3SUU was different from that of the unmodified ASLLysUUU, whereas the stems were isomorphous. Based on these and other data, we conclude that s2U34 in tRNALysSUU and in other s2U34-containing tRNAs is critical for generating an anticodon conformation that leads to effective codon interaction in all organisms. This is the first example of a single atom substitution (U34-->s2U34) that confers the property of ribosomal binding on an otherwise inactive tRNA.  (+info)

Phe161 and Arg166 variants of p-hydroxybenzoate hydroxylase. Implications for NADPH recognition and structural stability. (2/4744)

Phe161 and Arg166 of p-hydroxybenzoate hydroxylase from Pseudomonas fluorescens belong to a newly discovered sequence motif in flavoprotein hydroxylases with a putative dual function in FAD and NADPH binding [1]. To study their role in more detail, Phe161 and Arg166 were selectively changed by site-directed mutagenesis. F161A and F161G are catalytically competent enzymes having a rather poor affinity for NADPH. The catalytic properties of R166K are similar to those of the native enzyme. R166S and R166E show impaired NADPH binding and R166E has lost the ability to bind FAD. The crystal structure of substrate complexed F161A at 2.2 A is indistinguishable from the native enzyme, except for small changes at the site of mutation. The crystal structure of substrate complexed R166S at 2.0 A revealed that Arg166 is important for providing an intimate contact between the FAD binding domain and a long excursion of the substrate binding domain. It is proposed that this interaction is essential for structural stability and for the recognition of the pyrophosphate moiety of NADPH.  (+info)

Midbrain combinatorial code for temporal and spectral information in concurrent acoustic signals. (3/4744)

All vocal species, including humans, often encounter simultaneous (concurrent) vocal signals from conspecifics. To segregate concurrent signals, the auditory system must extract information regarding the individual signals from their summed waveforms. During the breeding season, nesting male midshipman fish (Porichthys notatus) congregate in localized regions of the intertidal zone and produce long-duration (>1 min), multi-harmonic signals ("hums") during courtship of females. The hums of neighboring males often overlap, resulting in acoustic beats with amplitude and phase modulations at the difference frequencies (dFs) between their fundamental frequencies (F0s) and harmonic components. Behavioral studies also show that midshipman can localize a single hum-like tone when presented with a choice between two concurrent tones that originate from separate speakers. A previous study of the neural mechanisms underlying the segregation of concurrent signals demonstrated that midbrain neurons temporally encode a beat's dF through spike synchronization; however, spectral information about at least one of the beat's components is also required for signal segregation. Here we examine the encoding of spectral differences in beat signals by midbrain neurons. The results show that, although the spike rate responses of many neurons are sensitive to the spectral composition of a beat, virtually all midbrain units can encode information about differences in the spectral composition of beat stimuli via their interspike intervals (ISIs) with an equal distribution of ISI spectral sensitivity across the behaviorally relevant dFs. Together, temporal encoding in the midbrain of dF information through spike synchronization and of spectral information through ISI could permit the segregation of concurrent vocal signals.  (+info)

Ca2+ and cross-bridge-induced changes in troponin C in skinned skeletal muscle fibers: effects of force inhibition. (4/4744)

Changes in skeletal troponin C (sTnC) structure during thin filament activation by Ca2+ and strongly bound cross-bridge states were monitored by measuring the linear dichroism of the 5' isomer of iodoacetamidotetramethylrhodamine (5'IATR), attached to Cys98 (sTnC-5'ATR), in sTnC-5'ATR reconstituted single skinned fibers from rabbit psoas muscle. To isolate the effects of Ca2+ and cross-bridge binding on sTnC structure, maximum Ca2+-activated force was inhibited with 0.5 mM AlF4- or with 30 mM 2,3 butanedione-monoxime (BDM) during measurements of the Ca2+ dependence of force and dichroism. Dichroism was 0.08 +/- 0.01 (+/- SEM, n = 9) in relaxing solution (pCa 9.2) and decreased to 0.004 +/- 0.002 (+/- SEM, n = 9) at pCa 4.0. Force and dichroism had similar Ca2+ sensitivities. Force inhibition with BDM caused no change in the amplitude and Ca2+ sensitivity of dichroism. Similarly, inhibition of force at pCa 4.0 with 0.5 mM AlF4- decreased force to 0.04 +/- 0.01 of maximum (+/- SEM, n = 3), and dichroism was 0.04 +/- 0.03 (+/- SEM, n = 3) of the value at pCa 9.2 and unchanged relative to the corresponding normalized value at pCa 4.0 (0.11 +/- 0.05, +/- SEM; n = 3). Inhibition of force with AlF4- also had no effect when sTnC structure was monitored by labeling with either 5-dimethylamino-1-napthalenylsulfonylaziridine (DANZ) or 4-(N-(iodoacetoxy)ethyl-N-methyl)amino-7-nitrobenz-2-oxa-1,3-diazole (NBD). Increasing sarcomere length from 2.5 to 3.6 microm caused force (pCa 4.0) to decrease, but had no effect on dichroism. In contrast, rigor cross-bridge attachment caused dichroism at pCa 9.2 to decrease to 0.56 +/- 0.03 (+/- SEM, n = 5) of the value at pCa 9. 2, and force was 0.51 +/- 0.04 (+/- SEM, n = 6) of pCa 4.0 control. At pCa 4.0 in rigor, dichroism decreased further to 0.19 +/- 0.03 (+/- SEM, n = 6), slightly above the pCa 4.0 control level; force was 0.66 +/- 0.04 of pCa 4.0 control. These results indicate that cross-bridge binding in the rigor state alters sTnC structure, whereas cycling cross-bridges have little influence at either submaximum or maximum activating [Ca2+].  (+info)

Heterotropic effectors exert more significant strain on monoligated than on unligated hemoglobin. (5/4744)

The effect of allosteric effectors, such as inositol hexakisphosphate and/or bezafibrate, has been investigated on the unliganded human adult hemoglobin both spectroscopically (employing electronic absorption, circular dichroism, resonance Raman, and x-ray absorption near-edge spectroscopies) and functionally (following the kinetics of the first CO binding step up to a final 4% ligand saturation degree). All data indicate that the unliganded T-state is not perturbed by the interaction with either one or both effectors, suggesting that their functional influence is only exerted when a ligand molecule is bound to the heme. This is confirmed by the observation that CO dissociation from partially liganded hemoglobin ( +info)

Coupling of the oxygen-linked interaction energy for inositol hexakisphosphate and bezafibrate binding to human HbA0. (6/4744)

The energetics of signal propagation between different functional domains (i.e. the binding sites for O2, inositol hexakisphospate (IHP), and bezafibrate (BZF)) of human HbA0 was analyzed at different heme ligation states and through the use of a stable, partially heme ligated intermediate. Present data allow three main conclusions to be drawn, and namely: (i) IHP and BZF enhance each others binding as the oxygenation proceeds, the coupling free energy going from close to zero in the deoxy state to -3.4 kJ/mol in the oxygenated form; (ii) the simultaneous presence of IHP and BZF stabilizes the hemoglobin T quaternary structure at very low O2 pressures, but as oxygenation proceeds it does not impair the transition toward the R structure, which indeed occurs also under these conditions; (iii) under room air pressure (i.e. pO2 = 150 torr), IHP and BZF together induce the formation of an asymmetric dioxygenated hemoglobin tetramer, whose features appear reminiscent of those suggested for transition state species (i.e. T- and R-like tertiary conformation(s) within a quaternary R-like structure).  (+info)

The magnitude of changes in guanidine-HCl unfolding m-values in the protein, iso-1-cytochrome c, depends upon the substructure containing the mutation. (7/4744)

Hydrophilic to hydrophobic mutations have been made at 11 solvent exposed sites on the surface of iso-1-cytochrome c. Most of these mutations involve the replacement of lysine with methionine, which is nearly isosteric with lysine. Minimal perturbation to the native structure is expected, and this expectation is confirmed by infrared amide I spectroscopy. Guanidine hydrochloride denaturation studies demonstrate that these variants affect the magnitude of the m-value, the rate of change of free energy with respect to denaturant concentration, to different degrees. Changes in m-values are indicative of changes in the equilibrium folding mechanism of a protein. Decreases in m-values are normally thought to result either from an increased population of intermediates during unfolding or from a more compact denatured state. When cytochrome c is considered in terms of its thermodynamic substructures, the changes in the m-value for a given variant appear to depend upon the substructure in which the mutation is made. These data indicate that the relative stabilities and physical properties of substructures of cytochrome c play an important determining role in the equilibrium folding mechanism of this protein.  (+info)

Reversible conversion of monomeric human prion protein between native and fibrilogenic conformations. (8/4744)

Prion propagation involves the conversion of cellular prion protein (PrPC) into a disease-specific isomer, PrPSc, shifting from a predominantly alpha-helical to beta-sheet structure. Here, conditions were established in which recombinant human PrP could switch between the native alpha conformation, characteristic of PrPC, and a compact, highly soluble, monomeric form rich in beta structure. The soluble beta form (beta-PrP) exhibited partial resistance to proteinase K digestion, characteristic of PrPSc, and was a direct precursor of fibrillar structures closely similar to those isolated from diseased brains. The conversion of PrPC to beta-PrP in suitable cellular compartments, and its subsequent stabilization by intermolecular association, provide a molecular mechanism for prion propagation.  (+info)

TY - JOUR. T1 - Stark effects in gas-phase electronic spectra. Dipole moment of aniline in its excited S1 state. AU - Korter, T. M.. AU - Borst, D. R.. AU - Butler, C. J.. AU - Pratt, D. W.. PY - 2001/1/10. Y1 - 2001/1/10. N2 - Measurements of the Stark effect on the rotationally resolved S1←S0 fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μa(S1 = 2.801 ± 0.007 D, a value that is ∼150% larger than the ground state, μa(S0) = 1.129 ± 0.005 D. The enhanced value of the dipole moment in the S1 state is attributed to more efficient electron donation by the quasi-planar amino group to the aromatic ring.. AB - Measurements of the Stark effect on the rotationally resolved S1←S0 fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μa(S1 = 2.801 ± 0.007 ...
During photosynthesis, sunlight is efficiently captured by light-harvesting complexes, and the excitation energy is then funneled towards the reaction centre. These photosynthetic excitation energy transfer (EET) pathways are complex and proceed in a multistep fashion. Ultrafast two-dimensional electronic spectroscopy (2DES) is an important tool to study EET processes in photosynthetic complexes. However, the multistep EET processes can only be indirectly inferred by correlating different cross peaks from a series of 2DES spectra. Here we directly observe multistep EET processes in LHCII using ultrafast fifth-order three-dimensional electronic spectroscopy (3DES). We measure cross peaks in 3DES spectra of LHCII that directly indicate energy transfer from excitons in the chlorophyll b (Chl b) manifold to the low-energy level chlorophyll a (Chl a) via mid-level Chl a energy states. This new spectroscopic technique allows scientists to move a step towards mapping the complete complex EET processes ...
TY - JOUR. T1 - Two dimensional electronic spectroscopy of molecular complexes. AU - Cho, Minhaeng. AU - Brixner, Tobias. AU - Stiopkin, Igor. AU - Vaswani, Harsha. AU - Fleming, Graham R.. PY - 2006/2. Y1 - 2006/2. N2 - Two dimensional (2D) heterodyne-detected electronic photon echo spectroscopy is introduced and described. We give an intuitive description of the origin and information content of 2D electronic spectra, focusing on molecular complexes. We identify two important quantities-the transition dipole term, and the transition frequency cross correlation function that controls the appearance of 2D electronic spectra. We also show how the transition frequency cross correlation function controls the rate of exciton relaxation. These concepts are illustrated with experimental data on the seven bacteriochlorophyll FMO complex of a green sulfur bacterium, showing how the pathways and mechanisms of energy flow can be elucidated by combining 2D spectra with theoretical modeling.. AB - Two ...
The study of the photosynthetic processes has always had a particular relevance in spectroscopy because of its possible applications in light harvesting and energy storage. Since the light-harvesting pigment-protein complexes have this functional role in nature, many of studies have been focused on understanding photophysical processes occurring in these systems. Our work aims to study the spectroscopic properties of the best known pigment involved in the photosynthesis, Chlorophyll a, and their changes with different solvents. The study of the pigment was conducted by linear spectroscopic studies for water-solvent mixtures, while by the nonlinear technique 2D spectroscopy was applied for pure solvent. The theory and technique of 2D spectroscopy is described. The properties of solvents strongly influence the environment felt by the molecule and its capability of aggregate formation. The solvent properties that were found to be most relevant for our study were viscosity, H-bonding formation and ...
The |i|Journal of Biomedical Optics|/i| (JBO) publishes peer-reviewed papers on the use of novel optical systems and techniques for improved health care and biomedical research.
Apoptosis, ldquoprogrammed cell death,rdquo is a cellular process exhibiting distinct biochemical and morphological changes. There is much interest regardi
TY - JOUR. T1 - Electronic spectroscopy of intermediates involved in the conversion of methane to methanol by FeO+. AU - Aguirre, Fernando. AU - Husband, John. AU - Thompson, Christopher J.. AU - Stringer, Kay L.. AU - Metz, Ricardo B.. PY - 2002/3/8. Y1 - 2002/3/8. N2 - The reaction intermediates [H2C=Fe-OH2]+ and [HO-Fe-CH3]+ by photodissociation were studied. On the basis of experimental results and calculations performed at the B3LYP and TD3LYP level, excited state vibrational frequencies as well as geometry changes upon photoexcitation in [H2C=Fe-OH2]+ and [HO-Fe-CH3]+ were determined.. AB - The reaction intermediates [H2C=Fe-OH2]+ and [HO-Fe-CH3]+ by photodissociation were studied. On the basis of experimental results and calculations performed at the B3LYP and TD3LYP level, excited state vibrational frequencies as well as geometry changes upon photoexcitation in [H2C=Fe-OH2]+ and [HO-Fe-CH3]+ were determined.. UR - ...
Fleming has compared 2-D electronic spectroscopy to the technique used in the early super-heterodyne radios, where an incoming high frequency radio signal was converted by an oscillator to a lower frequency for more controllable amplification and better reception. In the case of 2-D electronic spectroscopy, scientists can track the transfer of energy between molecules that are coupled (connected) through their electronic and vibrational states in any photoactive system, macromolecular assembly or nanostructure.. Fleming and his group first described 2-D electronic spectroscopy in a 2005 Nature paper, when they used the technique to observe electronic couplings in the Fenna-Matthews-Olson (FMO) photosynthetic light-harvesting protein, a molecular complex in green sulphur bacteria. Said Engel, The 2005 paper was the first biological application of this technique, now we have used 2-D electronic spectroscopy to discover a new phenomenon in photosynthetic systems. While the possibility that ...
Virus diseases are of high concern in the cultivation of seed potatoes. Once found inthe field, virus diseased plants lead to declassification or even rejection of the seed lotsresulting in a financial loss. Farmers put in a lot of effort to detect diseased plants andremove virus-diseased plants from the field. Nevertheless, dependent on the cultivar,virus diseased plants can be missed during visual observations in particular in an earlystage of cultivation. Therefore, there is a need for fast and objective disease detection.Early detection of diseased plants with modern vision techniques can significantlyreduce costs. Laboratory experiments in previous years showed that hyperspectral imaging clearly could distinguish healthy from virus infected potato plants. This paper reports on our first real field experiment. A new imaging setup was designed, consisting of a hyperspectral line-scan camera. Hyperspectral images were taken in the field with a line interval of 5 mm. A fully convolutional ...
Target detection of hyperspectral image (HSI) is a research hotspot in the field of remote sensing. It is of particular importance in many domains, especially in military application. Unsupervised target detection is usually more difficult because there is no prior information about target. Traditional algorithms exploit spectral information, only. This study introduces the idea of saliency detection from the visual technique into HSI processing domain and proposes a novel approach named spectral saliency target detection (SSD). It establishes a novel salient model, which utilises both spatial saliency and spectral saliency. In the framework of SSD, it combines the model with spectral matching algorithm to make it perform well even in situations where the target is concealed and small. A HSI set comprised of eight different scenes with complex background is setup to evaluate the performance of the proposed algorithm. The final visible detection results demonstrate that the SSD algorithm ...
Deep learning techniques have boosted the performance of hyperspectral image (HSI) classification. In particular, convolutional neural networks (CNNs) have shown superior performance to that of the conventional machine learning algorithms. Recently, a novel type of neural networks called capsule networks (CapsNets) was presented to improve the most advanced CNNs. In this paper, we present a modified two-layer CapsNet with limited training samples for HSI classification, which is inspired by the comparability and simplicity of the shallower deep learning models. The presented CapsNet is trained using two real HSI datasets, i.e., the PaviaU (PU) and SalinasA datasets, representing complex and simple datasets, respectively, and which are used to investigate the robustness or representation of every model or classifier. In addition, a comparable paradigm of network architecture design has been proposed for the comparison of CNN and CapsNet. Experiments demonstrate that CapsNet shows better accuracy and
CiteSeerX - Scientific articles matching the query: A Novel Analysis Dictionary Learning Model Based Hyperspectral Image Classification Method
Molecular mechanics; symmetry; quantum mechanics; electronic structure of atoms; electronic structure of diatomic molecules; self-consistent-field method; empirical and semiempirical methods; electron correlation methods; qualitative molecular orbital theory; comparisons of computational methods; calculation of molecular properties; molecular modeling software; rotational spectroscopy; vibrational spectroscopy; atomic spectroscopy; electronic spectroscopy of diatomic molecules; electronic spectroscopy of polyatomic molecules; photoelectron and related spectroscopy; Auger electron and x-ray fluorescence spectroscopy; lasers and laser spectroscopy; magnetic resonance spectroscopy; excitons: theory and applications.. Prerequisite: CM3041 or equivalent. ...
Hyperspectral imaging is emerging as a promising approach for plant disease identification. The large and possibly redundant information contained in hyperspectral data cubes makes deep learning based identification of plant diseases a natural fit. Here, we deploy a novel 3D deep convolutional neural network (DCNN) that directly assimilates the hyperspectral data. Furthermore, we interrogate the learnt model to produce physiologically meaningful explanations. We focus on an economically important disease, charcoal rot, which is a soil borne fungal disease that affects the yield of soybean crops worldwide. Based on hyperspectral imaging of inoculated and mock-inoculated stem images, our 3D DCNN has a classification accuracy of 95.73% and an infected class F1 score of 0.87. Using the concept of a saliency map, we visualize the most sensitive pixel locations, and show that the spatial regions with visible disease symptoms are overwhelmingly chosen by the model for classification. We also find that the most
The non-resonant dynamic Stark effect is a powerful and general way of manipulating ultrafast processes in atoms, molecules, and solids with exquisite precision. We discuss the physics behind this effect, and demonstrate its efficacy as a method of control in a variety of systems. These applications range fr Coherence and Control in Chemistry
We measure several fundamental electronic properties of molecules such as charge transfer and electronic delocalization using a technique known as Stark spectroscopy. Stark spectroscopy involves applying large electric fields to molecules in films or matrices and analyzing the effects of the field perturbation on the absorption or emission spectrum. We have recently focused on the properties of MEH-PPV and other molecules used to make to organic light emitting diodes (OLEDs). Stark spectroscopy reveals the mechanism by which a large applied electric field, such as those present in OLEDs, produces undesirable emission quenching and suggests strategies for minimizing this loss of device efficiency through modifications of the polymer structure.. Emission properties of Single Molecules and Aggregates. Recent years has seen a huge growth in the use of organic conjugated oligomers and polymers in the design of light emitting diodes (OLEDs) and photovoltaic cells. When these molecules are placed in ...
Application Note: Kinetics of Photocatalysis Reactions Studied by Transient Absorption Spectroscopy. Read and Download our Application Note.
1. Physical principles of optical spectroscopy and ellipsometry - Electron transitions and the origin of the spectral dependences of the optical parameters - Modeling of dielectric function of materials - Kramers-Kronig dispersion relation, the relation of absorption and dispersion - Spectral device (dispersive prism, grating, Fabry-Perot interferometer) - Selected parts of optical thin films - Methods of effective environments and their use in optical spectroscopy 2. REFLECTION AND TRANSMISSION spectroscopy in the visible, near-ultraviolet A near-infrared - Components of spectrometers, the two-spectrometer - Materials used in optical spectroscopy - Resolution limit and instrumentation functions monochromator - Superstructure instruments for measuring reflection spectra, integrating sphere 3. Spectroscopic ellipsometry - Methods of ellipsometry, the ellipsometric measurement angles psi and delta, generalized ellipsometry - Type ellipsometer (zero ellipsometry, polarization modulation, rotating ...
There are loads of situations when spectrum analysis can be helpful during mixdown, but there are a few things to bear in mind if you want to take full advantage of it. The first thing is that the analysers bundled with most DAW systems arent high-resolution enough, so check out some of the much better third-party options. Voxengos SPAN is a good piece of cross-platform freeware, for example, although I tend to use Schwas affordable payware Schope myself.. The first big analysis application at mixdown highlights overall mix-tonality imbalances that your monitoring hasnt alerted you to. Although this is clearly relevant to budget setups with budget monitors and uncontrolled acoustics, even pros like Joe Chiccarelli and Eric Rosse talk about using spectrum analysis in this way. However, every spectrum analyser seems to display things in a different way, so you need to get to know how your favourite records look on screen before you can come to any meaningful conclusions about your own work. A ...
The spectrum pane is similar to the one you can see in Chanalyzer, a spectrum analysis application by MetaGeek that comes with Wi-Spy. By default, the Channels and Spectrum pane displays one or two planar spectrum graphs for single- and dual-band Wi-Spy models, respectively. The appearance of the graphs can be controlled via the context menu. Select 2.4 GHz, 5.0 GHz, or Dual to have the spectrum pane display one of the single frequency bands or two bands simultaneously (5.0 GHz and Dual are available only if you have a dual-band Wi-Spy model.) Select Current Level to display a line that shows the current signal amplitude; select Max Level to display a line that shows the maximum signal amplitude. The X-axis item allows you to select the measurement units of the horizontal axis; you can choose between Frequency in MHz and Channel numbers. By enabling the Waterfall view, you can have the application graph amplitude over time. Select 1/3, 1/2, or 2/3 of the window size to adjust the area of the ...
but the nature of this approximation is typically determined by characteristics of audio perception. Best results are usually obtained by formulating this as an FIR filter design problem (see Chapter 4). In general, both time-domain and frequency-domain specifications are needed. (Recall the potentially problematic impulses in the Dolph-Chebyshev window shown in Fig.3.33 when its length was long and ripple level was high). Equivalently, both magnitude and phase specifications are necessary in the frequency domain. A window transform can generally be regarded as the frequency response of a lowpass filter having a stop band corresponding to the side lobes and a pass band corresponding to the main lobe (or central section of the main lobe). Optimal lowpass filters require a transition region from the pass band to the stop band. For spectrum analysis windows, it is natural to define the entire main lobe as ``transition region. That is, the pass-band width is zero. Alternatively, the pass-band ...
I need to measure frequency of a low level signal in the range 300kHz to 500kHz with the frquency either displayed numerically or available to process in an automated PC test setup to give a pass/fail result. Currently I use an expensive hardware spectrum analyser with a human interpreter. The spectrum analysis software available for the picoscopes looks very basic and appears to always run from zero up to the maximum selected frequency. Question 1: can the frequency axis be displayed with user selectable start and stop frequencies like a normal hardware analyser? Question 2: Are there marker peak-find functions available with live readout or data-out that can be used in PC ATE ...
This thesis presents the non-invasive use of diffuse reflectance spectroscopy (DRS) to provide information about the biochemical composition of living tissue. During DRS measurements, the incident, visible light is partially absorbed by chromophores but also scattered in the tissue before being remitted.. Human skin and heart, the main tissue objects in this thesis, are dependent on a sufficient inflow of oxygenized blood, and outflow of metabolic byproducts. This process could be monitored by DRS using the spectral fingerprints of the most important tissue chromophores, oxyhemoglobin and deoxyhemoglobin.. The Beer-Lambert law was used to produce models for the DRS and has thus been a foundation for the analyses throughout this work. Decomposition into the different chromophores was performed using least square fitting and tabulated data for chromophore absorptivity.. These techniques were used to study skin tissue erythema induced by a provocation of an applied heat load on EMLA-treated skin. ...
I tried using a Sound Blaster Z PCIe card in conjunction with spectrum analysis software but the results were dissapointing. The SB Z appears to add a fair amount of distortion (mainly second harmonic) to signals feeding the line input. I then tried an old SB Audigy 2 PCI card in another PC. The results were much better. Does anyone know why this should be? My own theory is that the SB Z shares a single input jack for line input and mic input. That must mean there is some variable gain
Mohammadi, SM, Enshaeifar, S, Ghavami, M and Sanei, S (2015) Classification of Awake, REM, and NREM from EEG via Singular Spectrum Analysis In: 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015-08-25 - 2015-08-29, Milan, ITALY. Full text not available from this repository ...
A method and device for detecting dichroic and/or birefringent narrow spectral features in a sample is described. The method includes the steps of providing a beam of light having an optical frequency bandwidth which is narrow compared to the width of the narrow spectral feature and having a center frequency ωc which lies near the narrow spectral feature, polarization phase modulating a beam of light with a single RF frequency to provide a pure FM spectrum having upper and lower sidebands in which either the carrier and sidebands have been polarized with respect to one another, exposing the sample containing the narrow spectral feature to the polarized modulated light so that the FM sidebands probe the narrow spectral feature, polarization analyzing and then photodetecting the light emerging from the sample to detect a RF beat at the specific RF frequency used for the polarization phase modulation, and electronically monitoring the amplitude of the RF beat signal to indicate the strength of the narrow
We demonstrate active hyperspectral imaging using a quantum-cascade laser (QCL) array as the illumination source and a digital-pixel focal-plane-array (DFPA) camera as the receiver. The multi-wavelength QCL array used in this work comprises 15 individually addressable QCLs in which the beams from all lasers are spatially overlapped using wavelength beam combining (WBC). The DFPA camera was configured to integrate the laser light relfected from the sample and to perform on-chip subtraction of the passive thermal background. A 27-frame hyperspectral image was acquired of a liquid contaminant on a diffuse gold surface at a range of 5 meters. The measured spectral reflectance closely matches the calculated reflectance. Furthermore, the high-speed capabilities of the system were demonstrated by capturing differential reflectance images of sand and KClO3 particles that were moving at speeds of up to 10 m/s ...
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Matteoli, S., E.J. Ientilucci, J.P. Kerekes. Operational and performance considerations of radiative transfer modeling in hyperspectral target detection. IEEE Transactions on Geoscience and Remote Sensing, (2010): 1-13. Print. £. Stefanou, M.S., J.P. Kerekes. Image-Derived Prediction of Spectral Image Utility for Target Detection Applications. IEEE Transactions on Geoscience and Remote Sensing, 48.5 (2010): 1827-1833. Print. † £. King, K.C., J.P. Kerekes. Development of a Web-based Blind Test to Score and Rank Hyperspectral Classification Algorithms. Proceedings of the 2010 Western NY Image Processing Workshop, IEEE, Nov. 2010. n.p. Print. † £. Lu, Z., A.C. Rice, J.R. Vasquez, J.P. Kerekes. Target Discrimination Via Optimal Wavelength Band Selection With Synthetic Hyperspectral Imagery. Proceedings of the Second Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, IEEE, June 2010. n.p. Print. £. Presnar, M.D., J.P. Kerekes, D.R. Pogorzala. Dynamic ...
We explore the use of Monte-Carlo-model-based methods for the analysis of fluorescence and diffuse reflectance spectra measured from breast cells. the difference in model selection by individual researchers, and this was the only difference in the model 1572414-83-5 supplier parameters for fitted the diffuse reflectance spectra of units 1 and 2 and arranged 3. However, the absorption due to NADH only was found to account for only 0 to 3% normally of the total absorption across the wavelength range of 350 to 600 nm, having a imply of 0.4% and a standard deviation of 2%. This indicated that NADH did not contribute significantly to the absorption with this wavelength range, and the absorption and scattering properties from the three units of cells spectra are still similar. The absorption properties yielded from your model and used in further data analysis then include represents the contribution and then represents the fractional fluorescence contribution from an individual component to that ...
Planned hyperspectral satellite missions and the decreased revisit time of multispectral imaging offer the potential for data fusion to leverage both the spectral resolution of hyperspectral sensors and the temporal resolution of multispectral constellations. Hyperspectral imagery can also be used to better understand fundamental properties of multispectral data. In this analysis, we use five flight lines from the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) archive with coincident Landsat 8 acquisitions over a spectrally diverse region of California to address the following questions: (1) How much of the spectral dimensionality of hyperspectral data is captured in multispectral data?; (2) Is the characteristic pyramidal structure of the multispectral feature space also present in the low order dimensions of the hyperspectral feature space at comparable spatial scales?; (3) How much variability in rock and soil substrate endmembers (EMs) present in hyperspectral data is captured by ...
The book Modern Optical Spectroscopy: With Examples from Biophysics and Biochemistry explains the theory of optical spectroscopic phenomena and demons
TY - JOUR. T1 - Formation and decay of localized contact radical ion pairs in DNA hairpins. AU - Lewis, Frederick D. AU - Liu, Xiaoyang. AU - Miller, Scott E.. AU - Hayes, Ryan T.. AU - Wasielewski, Michael R. PY - 2002/11/27. Y1 - 2002/11/27. N2 - The dynamics of charge separation and charge recombination in synthetic DNA hairpins possessing diphenylacetylene-4,4′-dicarboxamide linkers have been investigated by means of femtosecond time-resolved transient absorption spectroscopy. The lowest excited singlet state of the linker is capable of oxidizing nearest neighbor adenine as well as guanine. A large wavelength shift in the transient absorption spectrum accompanies the conversion of the singlet linker to its anion radical, facilitating the investigation of electron-transfer dynamics. The rate constants for charge separation are dependent upon the oxidation potentials of the neighboring nucleobase donors but not upon the identity of nonnearest neighbors. Thus, the charge separation processes ...
Hyperspectral imaging (HSI) provides images with numerous spectral bands over a continuous spectral range, enabling analysis of complex scenes that co
RICS School of Built Environment were laid in 2011 when an RICS research demonstrated that nearly 80% shortage of skilled professionals in this sector.
FluroSat uses various remote sensing methods, including satellites, drones, and some aerial imagery, to capture and analyze hyperspectral images of cotton and grain fields to predict disease and help growers make decisions related to crop health.. ...
The primary objective of this pilot study is to calculate the sensitivity and specificity for discriminating tumor and benign tissues in vivo in colorectal cancer patients based on optical spectroscopy measurements. The secondary objective of this study is to calculate the spectral differences between in vivo and ex vivo measurements and the difference in the biological parameters (i.e. blood, water and fat content and blood oxygenation) that are extracted from the spectral information ...
A guided-mode resonance (GMR) filter with the same material (Ta2O5) for both the grating layer and the waveguide layer is designed and fabricated. This simple structure is easy to fabricate and can avoid the defects at the grating/waveguide interface using different materials. The spectral response measured with a Lambda 900 spectrophotometer under normal incidence for TE waves exhibits a peak reflectance exceeding 80% at the wavelength of 1040 nm with a full-width half-maximum (FWHM) linewidth of 23 nm. We evaluate the deviations of the fabricated structure from the designed parameters.. © 2010 Chinese Optics Letters. PDF Article ...
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1467-9892.2012.00820.x In this paper, we propose a new methodology for selecting the window length in Singular Spectral Analysis in which the window length is determined from the data prior to the commencement of modelling. The selection procedure is based on statistical tests designed to test the convergence of the autocovariance function. A classical time series…
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies. ...
Watch this video demonstration on how to use a spectrum analyzer, general RF spectrum analysis, and RF / EMC spectrum analyzer operations.
Learn the fundamentals of real-time spectrum analysis and how you can extend the performance of your PXI vector signal analyzer with high-throughput processing from the LabVIEW FPGA Module. 
This document describes several approaches to implementing wideband spectrum analysis using the NI USRP™ (Universal Software Radio Peripheral) platform. After addressing how to acq...
Hyperspectral imaging (HSI) is a technique that analyzes a wide spectrum of light coming into a camera. Instead of assigning individual pixels to primary c
Is there such a beast? I just did a spectrum analysis of two of my reference tracks, and they both had a frequency cut off at about 17khz. I dont...
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The APS frame definition allows for a variable number of spectrometer pixels (also called channels) to be included in the frame. The two pixel values are configured indirectly via the wavelength range of the spectrum to be output ...
Develop a broad, flexible level of knowledge of city and regional or town and country planning with our MSc Spatial Planning. Accredited by RTPI and RICS.
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A means for intracavity sum frequency generation is described in which a er operates simultaneously, cw, at two wavelengths where the net gain at one wavelength is substantially lower than that at the other. The optical alignment of the resonator provides a region where both fundamental wavelengths are overlapped, and another region where both feedback paths are spatially distinct. An active feedback mirror is located in the path of the lower net gain laser transition to provide optical amplification at that wavelength. The laser resonator further contains a sum frequency generating crystal for intracavity sum frequency generation of the two fundamental wavelengths. The sum frequency generating crystal is placed near a laser resonator cavity mode waist in the region where both wavelengths are spatially superimposed, producing the sum frequency of the two wavelengths. An intracavity polarization rotator provides the appropriate orientation of the polarization of the two fundamental wavelengths in the
Surface-enhanced IR-visible sum frequency generation (SFG) was studied using Ag and Au films over nanospheres (AgFON and AuFON), which provided large area of reproducible nanoscale structures with well-defined morphology. SFG vibrational spectra for a self-assembled monolayer of octadecanethiol were investigated on spheres with diameters ranging from 300 nm to 620 nm. With an input wavelength of 532 nm, a sphere diameter near 360 nm produced the maximum enhancement, which was consistent with the localized surface-plasmon resonant wavelength identified by minimum reflectivity. The measured second-order susceptibility for the asymmetric CH3 stretch mode of octadecanethiol was enhanced by up to 27 times on AgFON, which corresponded to an SFG enhancement factor of similar to 730. The SFG enhancement factor for AuFON was a quarter of that from AgFON. The SFG enhancement factor for the symmetric CH3 mode was about 10 times smaller than that for the asymmetric CH3 mode. This difference can be explained ...
Dielectric spectroscopy (DS) of living biological cells is based on the analysis of the complex dielectric permittivity of cells suspended in a physiological medium. It provides knowledge on the polarization-relaxation response of cells to external electric field as function of the excitation frequency. This response is strongly affected by both structural and molecular properties of cells and therefore, can reveal rare insights on cell physiology and behaviour. This study demonstrates the mapping potential of DS after cytoplasmatic and membranal markers for cell-based screening analysis. The effect of membrane permittivity and cytoplasm conductivity was examined using tagged MBA and MDCK cell lines respectively. Comparing the permittivity spectra of tagged and native cell lines reveals clear differences between the analyzed suspensions. In addition, differences on the matching dielectric properties of cells were obtained. Those findings support the high distinction resolution and sensitivity of DS
The diffractive features of angular distribution have been investigated by analyzing the experimental data for a set of elastic scattering processes of {sup 7}Li by different target nuclei at different laboratory energies. Both Frahn-Venter and McIntyre models are used to analyze experimental data of angular distribution for elastic scattering processes. The theoretical models can reasonably reproduce the general pattern of the data. Some geometrical parameters for colliding nuclei have been obtained from the elastic scattering processes. It is found that interpretation of the diffractive features of the data is model-independent. The values of extracted parameters, from adopted models, are found comparable to each other and to those of others. The total reaction cross section is correlated to the incident laboratory energy for each scattering and values of total reaction cross section are found comparable with those of others. ...
Due to the broad biological significance of the correlation between phospholipid membrane structure and function, there is a great need for powerful tools to probe the distribution, kinetics, orientation and conformation of lipid and protein membrane constituents. Sum Frequency Spectroscopy (SFS) can simultaneously elucidate the absolute orientation and the detailed degree of conformational order of the alkyl chains of lipids comprising a membrane. To date, SFS studies of membrane structures have been performed on model membranes formed directly on solid substrates, at the oil/ solution interface, and at the air/ water interface. Such systems are not amenable to studies of membrane transport processes or incorporation of transmembrane proteins with intracellular domains. Thus, a model membrane system replicating, in a controlled manner, the cross-section of a biological membrane is being developed by building upon knowledge regarding cushioned model membranes and utilizing a detailed ...
Plant Analysis by Laser Induced Breakdown Spectroscopy (LIBS) - Agriculture - Agriculture Monitoring and Testing by Applied Spectra, Inc.. Laser-induced breakdown spectroscopy (LIBS) offers the ability to analyze plant samples with little to no sampl...
TY - JOUR. T1 - Determination of potassium in ceramic raw materials using laser-induced breakdown spectroscopy combined with profile fitting. AU - Tang, Yun. AU - Guo, Lianbo. AU - Tang, Shisong. AU - Chu, Yanwu. AU - Zeng, Qingdong. AU - Zeng, Xiaoyan. AU - Duan, Jun. AU - Lu, Yongfeng. PY - 2018/8/1. Y1 - 2018/8/1. N2 - The determination of potassium (K) content in ceramic raw materials provides important references for ceramic sintering. To realize rapid, in situ, and real-time analysis detection, a laser-induced breakdown spectroscopy (LIBS) system was set up to analyze K content in ceramic raw materials. However, the self-absorption was the serious influence on the accuracy of K element analysis. In this work, a method of profile fitting with Lorentz function was proposed to reduce the self-absorption effect in LIBS. After Lorentz fitting, the determination coefficient (R2 factor) for K element improved from 0.993 to 0.998, the root mean square error of cross-validation reduced from 0.458 ...
单分子力谱 的翻译结果:single-molecule force spectroscopy;single molecule force spectroscopy;single molecular force spectroscopy||双语例句|英文例句|相关文摘
We have observed a new mechanism for photon-gated spectral hole burning, donor-acceptor electron transfer, in a material composed of a zinc-tetrabenzoporphyrin derivative (donor) with chloroform acceptors in poly(methyl methacrylate) thin films. Gated holes form when we simultaneously excite the donor 0-0 singlet absorption (630 nm) and the donor triplet-triplet absorption (350-550 nm), with the largest gating enhancement (,30) occurring for gating light near 480 nm. The gating action spectrum and the photoproduct spectrum confirm that the mechanism is electron transfer from an excited triplet of the porphyrin donor to the chloroform acceptor. This result opens up a new class of materials for photon gating that should be of interest for frequency-domain optical storage applications as well as high-resolution spectroscopy of electron transfer processes in solids.. © 1987 Optical Society of America. Full Article , PDF Article ...
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Drusen, the hallmark lesions of age related macular degeneration (AMD), are biochemically heterogeneous and the identification of their biochemical distribution is key to the understanding of AMD. Yet the challenges are to develop imaging technology and analytics, which respect the physical generation of the hyperspectral signal in the presence of noise, artifacts, and multiple mixed sources while maximally exploiting the full data dimensionality to uncover clinically relevant spectral signatures. This paper reports on the statistical analysis of hyperspectral signatures of drusen and anatomical regions of interest using snapshot hyperspectral imaging and non-negative matrix factorization (NMF). We propose physical meaningful priors as initialization schemes to NMF for finding low-rank decompositions that capture the underlying physiology of drusen and the macular pigment. Preliminary results show that snapshot hyperspectral imaging in combination with NMF is able to detect biochemically ...
With 1.6 million deaths per year, lung cancer is one of the leading causes of death worldwide. One reason for this high number is the absence of a preventive medical examination method. Many diagnoses occur in a late cancer stage with a low survival rate. An early detection could significantly decrease the mortality. In recent decades, certain substances in human breath have been linked to certain diseases. Different studies show that it is possible to distinguish between lung cancer patients and a healthy control group by analyzing the volatile organic compounds (VOCs) in their breath. We developed a sensor based on photoacoustic spectroscopy for six of the most relevant VOCs linked to lung cancer. As a radiation source, the sensor uses an optical-parametric oscillator (OPO) in a wavelength region from 3.2 µm to 3.5 µm. The limits of detection for a single substance range between 5 ppb and 142 ppb. We also measured high resolution absorption spectra of the biomarkers compared to the data currently
In this paper we report the development and application of photoacoustic spectroscopy (PAS) for the detection and characterization of transient intermediates with lifetimes on the picosecond...
Find photoacoustic spectroscopy articles on Environmental XPRT, the worlds largest environmental industry marketplace and information resource.
Pollution of water is a matter of concern all over the earth. Particles are known to play an important role in the transportation of pollutants in this medium. In addition, the emergence of new materials such as NOAA (Nano-Objects, their Aggregates and their Agglomerates) emphasizes the need to develop adapted instruments for their detection. Surveillance of pollutants in particulate form in waste waters in industries involved in nanopartide manufacturing and processing is a telling example of possible applications of such instrumental development. The LIBS (laser-induced breakdown spectroscopy) technique coupled with the liquid jet as sampling mode for suspensions was deemed as a potential candidate for on-line and real time monitoring. With the final aim in view to obtain the best detection limits, the interaction of nanosecond laser pulses with the liquid jet was examined. The evolution of the volume sampled by laser pulses was estimated as a function of the laser energy applying conditional analysis
JPK Instruments, a world-leading manufacturer of nanoanalytic instrumentation for research in life sciences and soft matter, reports on the work of the Nano-Mechanics Laboratory at the Indian Institute of Science Education &Research (IISER) Pune, India. The Nano-mechanics group develops and uses novel techniques to understand molecular processes and has recently developed new instrumentation in the fields of single molecule force spectroscopy and correlation spectroscopy. There are three main areas of research: protein folding using AFM, measuring the mechanical properties of supported lipid bilayers and following the mechanical response of nano-confined fluids. This last area is performed on home-built instruments. Assistant Professor, Shivprasad Patil, leads the research team. He describes his work and reasons for selecting JPKs NanoWizard® AFM platform and CellHesion® modules to help speed his research efforts. For our protein folding research, we modified our JPK system to enable the ...
Wang, HF. Quantitative analysis of vibrational spectrum and orientational order in Sum Frequency Generation Vibrational Spectroscopy (SFG-VS) studies on molecular interfaces[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY,2005,230:U303-U303 ...
JILA is a joint physics institute of the University of Colorado at Boulder and the National Institute of Standards and Technology. We support an eclectic and innovative research program that fosters creative collaborations among our scientists. Collaborations play a key role in the pioneering research JILA and the JILA Physics Frontier Center are known for around the world. To learn more, visit our About JILA page.. ...
This paper presents the latest results of a series of experiments deigned to identify situations in which linear and nonlinear mixing models are expect to occur. It continues to investigate the possibility that there may be naturally occurring situation in which the typically used linear mixture model may not provide the most accurate spectrum. It has already been shown that for specific situations, in binary mixing cases, the nonlinear mixing model can produce more accurate endmember abundance estimates. These results are extended to include ternary and quaternary mixtures, as well as hyperspectral imagery collected over Cuprite, Nevada. In order to test these hypotheses, laboratory endmember and mixture data are collected in various scenarios for analysis. As shown in experiments, ternary and quaternary mixtures are more complicated than binary mixtures and the nonlinear mixing is more likely to occur in ternary and quaternary mixtures than in binary mixtures ...
This review explores how imaging techniques are being developed with a focus on deployment for crop monitoring methods. Imaging applications are discussed in relation to both field and glasshouse-based plants, and techniques are sectioned into healthy and diseased plant classification with an emphasis on classification accuracy, early detection of stress, and disease severity. A central focus of the review is the use of hyperspectral imaging and how this is being utilised to find additional information about plant health, and the ability to predict onset of disease. A summary of techniques used to detect biotic and abiotic stress in plants is presented, including the level of accuracy associated with each method.. ...
Optical Spectroscopy has shown promise as a fundamental characterization tool for carbon nanotubes (CNTs). With the potential of CNTs being utilized for aerospace applications, in-situ techniques including temperature and strain measurements with spectroscopy, are gaining significance. These techniques will provide valuable information to advance design and tailoring of CNT reinforcements in composites for maximum strength or damping. Development of these in-situ techniques allow for the study of the effects of external parameters on the spectra of CNTs. The results from these in-situ studies can further be used to develop non-invasive measurement capabilities to establish the integrity of CNT reinforced materials. In this study, changes in the peaks width, intensity, area, and peak location were analyzed under an expansive in-situ temperature range, using a novel deconvolution and fitting algorithm. The findings are significant to the development of optical spectroscopy techniques as characterization
PUBLICATIONS - CONFERENCES - PRESENTATIONS. A. Gates, State of the Art Protein Secondary Structure Prediction Using a Novel Two-Stage Alignment and Machine Learning Method Dissertation Publication: University of Florida Library, 2008. Bolton, P. Gader, and A. Gates, Embedding Multiple Instances: Applications to Hyperspectral Image Analysis, Proceedings of the IEEE Workshop on Hyperspectral Image Signal Processing: Evolution in Remote Sensing, Gainesville, 2013. Hohensee, L. Johnson, A. Gates, Leveraging Google Apps to Enhance Online Learning in Mathematics, American Mathematical Association of Two Year Colleges, 2014. A Gates, A. & Bolton, J. (2015). The Effectiveness of Twitter as an Adjunctive Pedagogical Tool for Online Statistics Education: An Empirical Study. In Proceedings of Society for Information Technology & Teacher Education International Conference 2015 (pp. 2834-2840). Chesapeake, VA: Association for the Advancement of Computing in Education (AACE/SITE).. A. Gates, Methods of ...
Known particles that may cause such scattering include neutrinos and antineutrinos (three flavours each) which are also seen in inelastic destruction and formation processes. Also, since dark matter is thought to not fit neutrino properties, that also means unknown number of different dark matter particles are eligible to cause elastic scattering of visible particles ...
When polymer power cables were introduced into mediumvoltage applications in the late 1960s, the degradationphenomenon later referred to aswater treeingwas still unknown. However, this changedwithin a relatively short space of time. Just 5-10 years afterthese first polymer applications, faults began to appear thatcould be attributed to the new phenomenon-water treeing. Sincethen, cable manufacturers have been improving their designsgradually, and cables produced today are assumed to have muchlower susceptibility to water trees. However, water treeing isstill assumed to be the most important degradation process inthese applications.. There are huge amounts of polymer cable installations thatare degraded by water trees. Since many of these cables areinstalled in the same grid nets, one cable fault oftengenerates another. If two or more cables fail at the same time,the consequences can be extensive. A non-destructive diagnosticmethod makes it possible to assess cables and take action priorto ...
High-resolution C 1s near-edge x-ray absorption fine structure (NEXAFS) spectra of naphthalene are investigated. By comparing the spectral signatures of condensed naphthalene molecules with those of naphthalene in the gas phase, we are able to unambiguously identify spectral features which are affected by the intermolecular interactions in the condensed phase. With the help of calculations using time-dependent density-functional theory and the second-order algebraic-diagrammatic construction scheme for the polarization propagator, resonances in the relevant energy range can be assigned to valence and Rydberg-like excitations. Thus, we obtain a more detailed identification of NEXAFS resonances beyond the present literature.. ...
The electronic absorption spectra (5000-30,000 cm.)(in chloroform) of thirty-three complexes of general formula (Amine)CoX where the amine is quinoline, isoquinoline, 2,6-dimethylpyrazine, pyridine, or a 2-, 3-, or 4-substituted pyridine, and X is Cl, Br, I, NCS, NCO, or NCSe, are reported. The near-infrared absorp
If an optically active organic substance is labelled in the chirality center with another isotopic species (such as15N for14N) a pronounced variation of rotatory power is predicted. We tried to varify this idea experimentally on L-α-alanine and found an isotope effect of ORD (optical rotatory dispersion). The magnitude of the rotation is mainly dependent on the pH of the solvent. The ratio of the optical activity alanine-14N/alanine-15N is about 1.02. The molecular rotations show a consistently lower ratio but it can be seen that the isotope effect is not only a mass effect. ...
If an optically active organic substance is labelled in the chirality center with another isotopic species (such as15N for14N) a pronounced variation of rotatory power is predicted. We tried to varify this idea experimentally on L-α-alanine and found an isotope effect of ORD (optical rotatory dispersion). The magnitude of the rotation is mainly dependent on the pH of the solvent. The ratio of the optical activity alanine-14N/alanine-15N is about 1.02. The molecular rotations show a consistently lower ratio but it can be seen that the isotope effect is not only a mass effect. ...
A dual-mode hyperspectral imager using field of view scanning needs no moving macro parts. It could work in dual-mode (macro imaging and micro imaging) and is equipped with a conjugated camera for quick object-selection and focusing. By adjusting the imaging lens and achieving the image clarity on the conjugated camera, we could find the correct location and focusing of the ROIs simultaneously instead of inefficiently checking the hyperspectral image after the whole scanning process. The whole system was applied to the study of spectral characteristics of blood oxygen in human hands and the microscopic identification of algae, showing a great potential of clinical and marine applications of our system.. ...
A spectroscopy device that separates input light into a plurality of wavelength ranges. A metal body has a hole or aperture which is open on the upper side. The hole or aperture is formed in a polygonal shape having at least a pair of opposite faces not parallel to each other in horizontal cross-section. Inner side faces of the hole or aperture are finished as mirror like reflection surfaces. Polarized input light inputted from the opening to the hole or aperture is reflected by the reflection surfaces and a standing wave is generated inside of the hole or aperture by self interference, whereby the input light is separated into a plurality of wavelength ranges.
The S10121-256Q-01 is self-scanning photodiode arrays designed specifically as detectors for spectroscopy. The scanning circuit operates at low power consumption and is easy to handle. This photodiode has a large photosensitive area with high sensitivity and smoothly varying spectral response characteristics in UV region. Features-High UV sensitivity-High UV sensitivity than previous type-Smoothly varying spectral response characteristics in UV region-Variable integration time for each pixel-Wide photosensitive area Pixel pitch: 50 μm Pixel height: 2.5 mm-Large saturation output charge
Continuing Geography Awareness Week, we would like to talk about a topic that brings together geospatial technologies (it is GIS Day after all) with this years Geography Awareness Week theme of Freshwater. Water quality assessment is a crucial issue in many parts of the world due to causes such as pollution in manufacturing countries, scarcity in arid regions, and issues of access in urban areas. While Earth Observation Day is still a few months away (April 8, 2011), we wanted to take a look at geographic information gathered from remote sensing technologies to understand how this imagery can be used in studying water quality and other water-related issues. There are a number of remote sensing studies that have taken advantage of spectral responses of specific phenomena to look at how light of different wavelengths can capture various water quality issues including sediments suspended in water, algae blooms, aquatic plants, and water temperature. Additional studies of these spectral responses ...
The K3413-08 is a hybrid detector containing an infrared-transmitting Si photodiode mounted over an InGaAs PIN photodiode, along the same optical axis. This structure delivers a wide spectral response range from 0.25 μm to nearly 1.7 μm. The built-in thermoelectric cooler maintains a constant temperature during operation, allowing precision measurement with an improved S/N ratio.Features-Wide spectral response range-Si photodiode and InGaAs PIN photodiode are arranged along the same optical axis-One-stage thermoelectrically cooled type
In this study, an efficient spectral similarity method referred to as Weighted Chebyshev Distance (WCD) is introduced for supervised classification of hyperspectral imagery (HSI) and target detection applications. The WCD is based on a simple spectral similarity based decision rule using limited amount of reference data. The estimation of upper and lower spectral boundaries of spectral signatures for all classes across spectral bands is referred to as a vector tunnel (VT). To obtain the reference information, the training signatures are provided randomly from existing data for a known class. After determination of the parameters of the WCD algorithm with the training set, classification or detection procedures are accomplished at each pixel. The comparative performances of the algorithms are tested under various cases. The decision criterion for classification of an input vector is based on choosing its class corresponding to the narrowest VT that the input vector fits in to. This is also shown to be
BioMEMS as microsystems designed for biomedical and biological applications provide various functions from micro implants, Lab-on-chip, PoC diagnostics to biosensors. This paper focuses on the sensing capability of BioMEMS in cell characterization, drug screening and biofilm detection. In situ staining and electrical approaches as impedance spectroscopy, dielectric spectroscopy and contactless impedimetric sensing are presented and discussed for applications in 3D cell culturing, for drug screening, sedimentation analysis in aquatic research and biofilm detection in indwelling devices.. Download. ...
Author(s): Digiacomo, Luca; Digman, Michelle A; Gratton, Enrico; Caracciolo, Giulio | Abstract: Fluorescence microscopy and spectroscopy techniques are commonly used to investigate complex and interacting biological systems (e.g. proteins and nanoparticles in living cells), since these techniques can explore intracellular dynamics with high time resolution at the nanoscale. Here we extended one of the Image Correlation Spectroscopy (ICS) methods, i.e. the image Mean Square Displacement, in order to study 2-dimensional diffusive and flow motion in confined systems, whose driving speed is uniformly distributed in a variable angular range. Although these conditions are not deeply investigated in the current literature, they can be commonly found in the intracellular trafficking of nanocarriers, which diffuse in the cytoplasm and/or may move along the cytoskeleton in different directions. The proposed approach could reveal the underlying systems symmetry using methods derived from fluorescence correlation
The wavelength-resolved fluorescence excitation technique has been used to record the (0,0) band of the $b^{3}\Pi_{1} - X^{1}\Sigma^{+}$ electronic transition of HfO at a resolution of $0.03 cm^{-1}$. $Previously^{1}$, this transition has been assigned as a $B^{1}\Pi - X^{1}\Sigma^{+}$ electronic transition. The principal constants (in $cm^{-1}$) obtained from recent and previous $analyses^{1,2}$ are: $\begin{array}{lccl}State&Configuration&T_{0}&B_{0}\\ {[}31.4{]}^{3}\Phi_{4}&5d6p&z+22 655.82&0.3719\\ {[}31.4{]}^{3}\Phi_{3}&5d6p&31 392.17&0.3699\\ {[}31.4{]}^{3}\Phi_{1}&5d6p&29 208.32&0.3696\\ G^{1}\Sigma^{+}&5g6s&30 032.706(8)&0.369 070(3)\\ F^{1}\Sigma^{+}(^{3}\Pi_{0+})&6s69(?)&27 351.136(8)&0.364 688(3)\\ E^{1}\Pi (c^{3}\Sigma^{+}_{1})&5d6s&25 176.878(7)&0.367 694(3)e\\ &&&0.368 294(4)f\\ D^{1}\Pi&5d6s&23 503.280(5)&0.368 191(3)e\\ &&&0.367 460(3)f\\ X^{1}\Sigma^{+}&62^{2}&0.0&0.385 644 05(2)\\ a^{3}\Delta_{3}&5d6s&z&0.378 644(7)\\ a^{3}\Delta_{2}&5d6s&10 152.303(12)&0.377 957(13)\\ ...
The quantitative understanding of nature at the molecular levels is the field of physical chemistry and I am interested in the spectroscopy properties of molecules to provide a unique diagnostic of the physical processes occurring in these diverse environments. We have research projects in spanning a large field from interfacial electronic spectroscopy, through nanotoxicology to the recovery of patients from major surgery. The current projects include:. ...
Which shows an absorption band at a larger wavenumber: a carbonyl group bonded to an sp3 carbon or acarbonyl group bonded to an sp2 carbon of an alkene?
misc{4936673, abstract = {Optical spectroscopy is commonly used in technology and science today. The presence and concentration of a substance can be determined by its spectral signature, the typical wavelengths that are absorbed (or emitted) by the atoms or molecules. Standard absorption spectroscopy requires that the substance is clear and that the optical path-length is known to obtain quantitative information. Unfortunately in many materials, such as human tissue or pharmaceutical tablets, there are also a strong scattering of light which complicates measurements. The pathlength of the light is now no longer known and the intensity of the detected light can in many cases be more affected by high scattering than by the absorption values. One method to separate these two values are photon Time-of-Flight Spectroscopy (TOFS). By sending many short light pulses through a sample, and recording the time for a single photon to arrive at our detector for each pulse, we can build a histogram that ...
SRC Seminar “Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy” Dr. Heejun Yang Department of Physics, KAIST Apr. 2 (Fri.), 04:00 PM Online seminar https://kaist.zoom.us/j/85719491744 회의 ID: 857 1949 1744 암호:...
In hyperspectral imaging, spectral unmixing aims at decomposing the image into a set of reference spectral signatures corresponding to the materials present in the observed scene and their relative proportions in every pixel. While a linear mixing model was used for a long time, the complex nature of the physico-chemical phenomena that affect the spectra of the materials led to shift the communitys attention towards algorithms accounting for the variability of the endmembers. Such intra-class variations are mainly due to local changes in the composition of the materials, and to illumination changes. In the physical remote sensing community, a popular model accounting for illumination variability is the radiative transfer model proposed by Hapke. It is however too complex to be directly used in hyperspectral unmixing in a tractable way. Instead, the Extended Linear Mixing Model (ELMM) allows to easily unmix hyperspectral data accounting for changing illumination conditions and to address nonlinear
Hyperspectral imagery is a new class of image data which is mainly used in remote sensing. It is characterized by a wealth of spatial and spectral information that can be used to improve detection and estimation accuracy in chemical and biological standoff detection applications. Finding spectral endmembers is a very important task in hyperspectral data exploitation. Over the last decade, several algorithms have been proposed to find spectral endmembers in hyperspectral data. Existing algorithms may be categorized into two different classes: 1) endmember extraction algorithms (EEAs), designed to find pure (or purest available) pixels, and 2) endmember generation algorithms (EGAs), designed to find pure spectral signatures. Such a distinction between an EEA and an EGA has never been made before in the literature. In this paper, we explore the concept of endmember generation as opposed to that of endmember extraction by describing our experience with two EGAs: the optical real-time adaptative ...
EN] Dielectric spectroscopy studies have been performed on fresh and osmotically dehydrated Granny Smith apples. The osmotic treatment consisted on immerse the samples into 65% (w/w) sucrose aqueous solution at 30 degrees ...
Because spectral peaks are so relatively dominant in hearing, sinusoidal models are ``unreasonably effective in capturing the tonal aspects of sound in a compact, easy-to-manipulate form. Computing a sinusoidal model entails fitting the parameters of a sinusoid (amplitude, frequency, and sometimes phase) to each peak in the spectrum of each time-segment. In typical sinusoidal modeling systems, the sinusoidal parameters are linearly interpolated from one time segment to the next, and this usually provides a perceptually smooth variation over time. (Higher order interpolation has also been used.) Modeling sound as a superposition of modulated sinusoids in this way is generally called additive synthesis [233]. Additive synthesis is not the only sound modeling method that requires sinusoidal parameter estimation for its calibration to desired signals. For the same reason that additive synthesis is so effective, we routinely calibrate any model for sound production by matching the short-time ...
Analysis of mass spectra can also be spectra with accurate mass. A mass-to-charge ratio value (m/z) with only integer precision ... Main article: Mass spectrum analysis. Since the precise structure or peptide sequence of a molecule is deciphered through the ... A mass spectrum is a plot of the ion signal as a function of the mass-to-charge ratio. These spectra are used to determine the ... Data analysis[edit]. Mass spectrometry data analysis is specific to the type of experiment producing the data. General ...
The age of classifying elements; application of spectrum analysis techniques: Boisbaudran, Bunsen, Crookes, Kirchhoff, and ... Bunsen and Kirchhoff were the first to suggest finding new elements by spectrum analysis. They discovered caesium by its two ... After the war, Coster and Hevesy found it by X-ray spectroscopic analysis in Norwegian zircon.[127] Hafnium was the last stable ... Janssen and Lockyer observed independently a yellow line in the solar spectrum that did not match any other element. This was ...
Bayesian Spectrum Analysis and parameter estimation. PhD thesis 1988. available at http://bayes.wustl.edu/glb/book.pdf ... But see Mathematical details, below, for an analysis of its validity. In particular it is not valid when s. =. 0. {\ ... Further analysis[edit]. A good model is essential (i.e., a good compromise between accuracy and practicality). To paraphrase ... So most decisions must be subjective to some extent (dependent upon the analyst and analysis used). ...
Roscoe, Henry (1878). Spectrum Analysis. London: Macmillan. Henry Enfield Roscoe. Roscoe, Henry (1882). Kurzes Lehrbuch der ... Lectures on Spectrum Analysis (1869); a Treatise on Chemistry (the first edition of which appeared in 1877-1892); A New View of ...
Retcofsky, H. L. (2003). "Spectrum Analysis Discoverer?". Journal of Chemical Education. 80 (9): 1003. Bibcode:2003JChEd.. ... A continuous spectrum source viewed through a cool, low-density gas produces an absorption-line spectrum. In the 1860s the ... Kirchhoff; Bunsen (August 1860). "Chemical analysis by spectrum-observations". Philosophical Magazine. 4th series. 20 (131): 89 ... when Edlén proved the identification of some solar coronal lines on the basis of his precise analyses of spectra of MIA. This ...
Meru Spectrum Manager. A spectrum analysis solution. Access Points. Built from the radio layer up to support virtualized ...
1878) Norman Lockyer (1878). Studies in Spectrum Analysis. C. K. Paul. norman lockyer. (1878) Report to the Committee on Solar ... 1897) Recent and Coming Eclipses (1900) Norman Lockyer (1900). Inorganic Evolution as Studied by Spectrum Analysis. Macmillan ... In 1868 a prominent yellow line was observed in a spectrum taken near the edge of the Sun. With a wavelength of about 588 nm, ... Subscription or UK public library membership required.) Hearnshaw, J. B. (1986). The Analysis of Starlight. Cambridge: ...
Stokes on the early history of spectrum analysis". Nature. 13: 188-189. doi:10.1038/013188c0.. ... Chemical analysis[edit]. The chemical identification of organic bodies by their optical properties was treated in 1864;[27] and ... A paper on the long spectrum of the electric light bears the same date,[25] and was followed by an inquiry into the absorption ... In 1862, the German physiologist Felix Hoppe-Seyler (1825-1895) had examined the absorption spectrum of blood: *. Hoppe, Felix ...
Tukey, J.W. (1967). "An introduction to the calculations of numerical spectrum analysis". Spectral Analysis of Time Series: 25- ... Kaiser, James F.; Schafer, Ronald W. (1980). "On the use of the I0-sinh window for spectrum analysis". IEEE Transactions on ... Analysis of transients[edit]. When analyzing a transient signal in modal analysis, such as an impulse, a shock response, a sine ... and spectrum analysis.[68] Like other adjustable windows, the Ultraspherical window has parameters that can be used to control ...
"Early intervention for autism spectrum disorders: a critical analysis. Amsterdam: Elsevier Science. p. 21. ISBN 978-0-08-044675 ... Some researchers and people on the autism spectrum have advocated a shift in attitudes toward the view that autism spectrum ... Health Care Analysis. 20 (1): 20-30. doi:10.1007/s10728-011-0169-9. PMID 21311979. Archived from the original (PDF) on 1 ... Autism Spectrum Screening Questionnaire (ASSQ); Childhood Autism Spectrum Test (CAST), previously called the Childhood Asperger ...
Hauge, Bjørn Gitle (2007). Optical spectrum analysis of the Hessdalen phenomenon (PDF) (Report). Archived (PDF) from the ... The spectrum is nearly flat on the top with steep sides, due to the effect of optical thickness on the bremsstrahlung spectrum ... Such a spectrum is typical of dense ionized gas. Additionally, the spectrum produced in the thermal bremsstrahlung process is ... 2 ions occur in auroral spectra.[17] The estimated temperature of Hessdalen lights is about 5,000 K.[11] At this temperature, ...
Li YM et al.. Association Between Maternal Obesity and Autism Spectrum Disorder in Offspring: A Meta-analysis. J Autism Dev ... Maternal Diabetes and the Risk of Autism Spectrum Disorders in the Offspring: A Systematic Review and Meta-Analysis. Journal of ... Gastrointestinal Symptoms in Autism Spectrum Disorder: A Meta-analysis. Pediatrics. 2014;133(5):872-883. doi:10.1542/peds.2013- ... a b Christison GW, Ivany K. Elimination diets in autism spectrum disorders: any wheat amidst the chaff? J Dev Behav Pediatr. ...
Spectrum analysis of a tone. The pair of spikes at 343 Hz and 401 Hz are the (0,1) mode. Spectrum analysis of a tonpalo (third ... Spectrum analysis for bass, tonpalo, tone, and slap Spectrum analysis of a bass. The big hump is the Helmholtz resonance. ... Spectrum analysis of a slap. The spike at 812 Hz is the (2,1) mode, followed by higher-order modes. By slightly varying ...
Cooper, F. S. Spectrum analysis. Journal of the Acoustical Society of America, 1950, 22, 761-762. Cooper, F. S. Guidance ... 4] Cooper, F. S., & Kruger, P. G. Standard wavelengths in the copper spectrum in the region 80A to 650A. Physical Review, 1933 ...
XXIV.-On chemical analysis by spectrum-observations. Quarterly Journal of the Chemical Society of London. 1861, 13 (3): 270. ... Analysis of the Element Lithium. echeat. 11 June 2006. (原始內容存檔於21 April 2012 dmy-all).. 請檢查. ,archive-date=. 中的日期值 (幫助) ... August Arfwedson, a young, very meritorious chemist, who has worked in my laboratory for a year, found during an analysis of
XXIV.-On chemical analysis by spectrum-observations. Quarterly Journal of the Chemical Society of London. 1861, 13 (3): 270. ... Analysis of the Element Lithium. echeat. 11 June 2006. (原始内容存档于21 April 2012 dmy-all).. 请检查. ,archive-date=. 中的日期值 (帮助) ... August Arfwedson, a young, very meritorious chemist, who has worked in my laboratory for a year, found during an analysis of
Pople, J.A.; Bernstein, H. J.; Schneider, W. G. (1957). "The Analysis of Nuclear Magnetic Resonanace Spectra". Can. J. Chem. 35 ... NMR spectra display less distortion than lower frequency spectra. Early spectra at 60 MHz were more prone to distortion than ... In more complex spectra with multiple peaks at similar chemical shifts or in spectra of nuclei other than hydrogen, coupling is ... The conversion of the raw data to this information is called assigning the spectrum. For example, for the 1H-NMR spectrum for ...
"XXIV.-On chemical analysis by spectrum-observations". Quarterly Journal of the Chemical Society of London. 13 (3): 270. 1861. ... August Arfwedson, a young, very meritorious chemist, who has worked in my laboratory for a year, found during an analysis of ... "Pentagon officials said that their initial analysis at one location in Ghazni Province showed the potential for lithium ... Green, Thomas (11 June 2006). "Analysis of the Element Lithium". echeat. Archived from the original on 21 April 2012. Garrett, ...
Koch, Douglas D. (2006). "Astigmatism analysis: The spectrum of approaches". Journal of Cataract & Refractive Surgery 32 (12): ... The Alpins Method employs the vector analytic approach to astigmatism analysis, involving an ophthalmic surgical analysis ... Morlet, N; D Minassian; J Dart (December 2002). "Astigmatism and the analysis of its surgical correction". British Journal of ... Noel Alpins AM is an Australian ophthalmologist who developed the Alpins method of astigmatism analysis used in refractive, ...
All weighted stack methods can increase the slowness resolution of velocity spectrum analysis. A cluster of earthquakes can be ... Capon, J. (1969). High-resolution frequency-wavenumber spectrum analysis. Proceedings of the IEEE, 57(8), 1408-1418. Kværna, T ... Frequency-wavenumber analysis is used as a reference tool in array processing for estimating slowness. This method was proposed ... A beampacking scheme was developed at NORSAR to apply f-k analysis of regional phases to data of large array. This algorithm ...
"XXIV.-On chemical analysis by spectrum-observations". Quarterly Journal of the Chemical Society of London. 13 (3): 270. 1861. ... IEEE Spectrum. Retrieved 15 June 2010. Loveday, Eric (23 April 2010). "Hitachi develops new manganese cathode, could double ... Hendricks, C.; Williard, N.; Mathew, S.; Pecht, M. (2016). "A failure modes, mechanisms, and effects analysis (FMMEA) of ... Zanini, M.; Basu, S.; Fischer, J. E. (1978). "Alternate synthesis and reflectivity spectrum of stage 1 lithium-graphite ...
Koch, DD (2006). "Astigmatism analysis: the spectrum of approaches". Journal of Cataract and Refractive Surgery. 32 (12): 1977- ... The Alpins Method of astigmatism analysis has many parallels to the game of golf. A golf putt is a vector, possessing magnitude ... Alpins N, Stamatelatos G. "Chapter 24: The Cornea - Part X: Treatment and analysis of astigmatism during the laser era." In: ... In the early 1990s, astigmatism analysis and treatment applied to laser modalities was inconsistent, and did not assess the ...
... singular spectrum analysis, and hierarchical agglomerative clustering for entity disambiguation. The Diffeo product, Diffeo ... "Contrastive Multivariate Singular Spectrum Analysis" (PDF). 2019 57th Annual Allerton Conference on Communication, Control, and ...
Koch, DD (2006). "Astigmatism analysis: the spectrum of approaches". Journal of Cataract and Refractive Surgery. 32 (12): 1977- ... Silvestrini, T. A.; Pinsky, P. M.; Christie, B. (2005). "Analysis of Glucose Diffusion Across the Acufocus Corneal Inlay Using ... Morlet, N; Minassian, D; Dart, J (2002). "Astigmatism and the analysis of its surgical correction". The British Journal of ... Alpins, N (2002). "A re-analysis of astigmatism correction". The British Journal of Ophthalmology. 86 (7): 832. doi:10.1136/bjo ...
Stolletz, Raik; Stefan Helber (2004). "Performance analysis of an inbound call center with skills-based routing". OR Spectrum. ... Masi D.M.B., Fischer M.J., Harris C.M., Numerical Analysis of Routing Rules for Call centres, Telecommunications Review, 1998, ... 2004). "Performance analysis of a call center with interactive voice response units". TOP. Springer Berlin. 12 (1): 91-110. doi ... Pal, Mahuya; Buzzanell, Patrice (2013). "Breaking the Myth of Indian Call Centers: A Postcolonial Analysis of Resistance". ...
Rossignol DA, Frye RE (April 2011). "Melatonin in autism spectrum disorders: a systematic review and meta-analysis". Dev Med ... a meta-analysis". Dev Med Child Neurol (Meta-analysis). 51 (5): 340-49. doi:10.1111/j.1469-8749.2008.03244.x. PMID 19379289.. ... A meta-analysis". J Gen Intern Med. 20 (12): 1151-58. doi:10.1111/j.1525-1497.2005.0243.x. PMC 1490287. PMID 16423108.. ... Brainard GC, Hanifin JP, Greeson JM, Byrne B, Glickman G, Gerner E, Rollag MD (August 2001). "Action spectrum for melatonin ...
Markova, N.; Groot, M. (1997). "An analysis of emission lines in the spectrum of P Cygni". The Astronomical Journal. 326: 1111- ... The star's spectrum is unusual in that it contains very strong emission lines resulting from surrounding nebulosity.[39] W ... In the visible spectrum, it appears as an elliptical galaxy in a small cluster. It is classified as an active galaxy because ... E. Plávalová; N. A. Solovaya (2013). "Analysis of the motion of an extrasolar planet in a binary system". Astronomy & ...
Comparative analysis essentially compares the given spectrum to a spectrum library to see if its characteristics are present ... A "full spectrum" analysis considers all the "peaks" within a spectrum. Conversely, selective ion monitoring (SIM) only ... one obtains a so-called product ion spectrum (also called "daughter spectrum"). From this spectrum, one can select a prominent ... This is done by comparing the relative concentrations among the atomic masses in the generated spectrum. Two kinds of analysis ...
J. Capo4 (August 1969). "High resolution frequency wave-number spectrum analysis". Proceedings of the IEEE. 57 (8): 1408-1418. ... A. Jakobsson; S. L. Marple; P. Stoica (2000). "Computationally efficient two-dimensional Capon spectrum analysis". IEEE ... An early analysis by Dr. Louis J. Cutrona, Weston E. Vivian, and Emmett N. Leith of that group showed that such a fully focused ... It is basically a spectrum estimation, because for a specific cell of an image, the complex-value SAR measurements of the SAR ...
Signal processing - Shock response spectrum analysis" (2007). ...
... s and aldehydes absorb strongly in the infra-red spectrum near 1700 cm−1. The exact position of the peak depends on the ... Mendham, J.; Denney, R. C.; Barnes, J. D.; Thomas, M. J. K. (2000), Vogel's Quantitative Chemical Analysis (6th ed.), New York ... Whereas 1H NMR spectroscopy is generally not useful for establishing the presence of a ketone, 13C NMR spectra exhibit signals ...
Dunning and Kruger tested the hypotheses of the cognitive bias of illusory superiority on undergraduate students of introductory courses in psychology by examining the students' self-assessments of their intellectual skills in logical reasoning (inductive, deductive, abductive), English grammar, and personal sense of humor. After learning their self-assessment scores, the students were asked to estimate their ranks in the psychology class. The competent students underestimated their class rank, and the incompetent students overestimated theirs, but the incompetent students did not estimate their class rank as higher than the ranks estimated by the competent group. Across four studies, the research indicated that the study participants who scored in the bottom quartile on tests of their sense of humor, knowledge of grammar, and logical reasoning overestimated their test performance and their abilities; despite test scores that placed them in the 12th percentile, the participants estimated they ...
"Phylogeographic Analysis of the mid-Holocene Mammoth from Qagnax Cave, St. Paul Island, Alaska" (PDF).. ... "The broad spectrum revisited: Evidence from plant remains". Proc Natl Acad Sci USA. 101 (26): 9551-5. doi:10.1073/pnas. ...
This ensures that subsequent user errors cannot inadvertently perform meaningless analyses (for example correlation analysis ... right/true' when measuring truth value, and, on the other hand, non-dichotomous data consisting of a spectrum of values, such ... Mosteller, Frederick (1977). Data analysis and regression : a second course in statistics. Reading, Mass: Addison-Wesley Pub. ... Cliff, N. (1996). Ordinal Methods for Behavioral Data Analysis. Mahwah, NJ: Lawrence Erlbaum. ISBN 0-8058-1333-0 ...
... Circuit Analysis - Theory and Solutions to 235 Problems; 2nd Ed; Alfred Gronner; Simon and Schuster; 244 pages; 1970 ... "IEEE Spectrum. 42 (11): 52-57. doi:10.1109/MSPEC.2005.1526906. S2CID 34953819. Archived from the original on February 14, 2008. ... "IEEE Spectrum: 48-49. Archived from the original on May 31, 2015.. ...
... a systematic review and meta-analysis". The British Journal of Dermatology (Systematic Review & Meta-Analysis). 173 (5): 1132- ... Widespread broad-spectrum antibiotic overuse for acne has led to higher rates of antibiotic-resistant C. acnes strains ... "Journal of Zhejiang University Science B (Meta-analysis). 13 (3): 192-202. doi:10.1631/jzus.B1100285. PMC 3296070. PMID ... "Annals of Family Medicine (Systematic Review & Meta-Analysis). 17 (6): 545-553. doi:10.1370/afm.2445. PMC 6846280. PMID ...
An upcoming meta-analysis will seek to determine if any type of ophthalmia neonatorum prophylaxis reduces the incidence of ... Other bacterial ophthalmia neonatorum should be treated by broad spectrum antibiotics drops and ointment for two weeks. ...
英文)Realtime Mass Spectra simulation Tool to simulate mass spectra in the browser ... Peptide and protein analysis by electrospray ionization-mass spectrometry and capillary electrophoresis-mass spectrometry. ... A fundamental introduction to ion mobility mass spectrometry applied to the analysis of biomolecules. Journal of Biomolecular ... 英文)Interactive tutorial on mass spectra National High Magnetic Field Laboratory ...
"Data analysis slides by Center for International Blood and Marrow Transplant Research". mcw.edu. Archived from the original on ... immuno-suppressive treatments and the spectrum of opportunistic infections can be survived.[21][22] In recent years, survival ...
These views span a broad spectrum from acceptance to rejection.[51] Most religions generally oppose abortion.[52] ... Pauli E, Haller U, Zimmermann R (2005). "Morbidity of dilatation and evacuation in the second trimester: an analysis" (in ... "Parity is a major determinant of success rate in medical abortion: a retrospective analysis of 3161 consecutive cases of early ...
spectrum. The spectrum of a graph is the collection of eigenvalues of its adjacency matrix. Spectral graph theory is the branch ... 2. Power graph analysis is a method for analyzing complex networks by identifying cliques, bicliques, and stars within the ... of graph theory that uses spectra to analyze graphs. See also spectral expansion.. split. 1. A split graph is a graph whose ...
... implied alignment and analysis methods". Journal of Molluscan Studies. 73 (4): 399-410. doi:10.1093/mollus/eym038.. ... "IEEE Spectrum. 5 April 2015.. *^ Burgess, Matt (27 March 2017). "This robotic octopus tentacle isn't creepy at all". Wired.. ... "Quantitative Analysis of Culture Using Millions of Digitized Books". Science. 331 (6014): 176-182. doi:10.1126/science.1199644 ...
IEEE Transactions on Pattern Analysis and Machine Intelligence. 23 (11): 1209-21. doi:10.1109/34.969113.. ...
This analysis yielded the conclusion that, in their culture of Wistar rat neocortical cells, the AWSR has long rise and fall ... A laser beam with wavelength in the UV spectrum would have extremely high spatial accuracy and, by releasing the caged ... Moreover, chemical analysis of the neurons and their environment is more easily accomplished than in an in vivo setting. ... Stegenga J, Feber JL, Marani E, Rutten WL (2008). "Analysis of Cultured Neuronal Networks Using Intraburst Firing ...
... es emit on the electromagnetic spectrum, with sferics and E-field effects detected.[45][47][48] There are observed ... Louis J. Wicker, Robert B. Wilhelmson; Wilhelmson (1995). "Simulation and Analysis of Tornado Development and Decay within a ... One tornado was reported to have a damage path only 7 feet (2.1 m) long.[24] On the other end of the spectrum, wedge tornadoes ... Tornadoes emit widely on the acoustics spectrum and the sounds are caused by multiple mechanisms. Various sounds of tornadoes ...
Needham, T (2007). Visual Complex Analysis. New York: Oxford University Press. pp. 140-141. ISBN 978-0-19-853446-4. .. ... In complex analysis, "infinity" is defined in terms of the Riemann sphere.) Inversion has the useful property that lines and ...
Goldberg J (September-October 2018). "From the Spectral to the Spectrum". Skeptical Inquirer. 42 (5).. ... Medical radiography acquisition is generally carried out by radiographers, while image analysis is generally done by ...
"Chemical risk analysis: a practical handbook. p. 215. ISBN 978-1-903996-65-2. .. ... Lindsay, D. M.; Garland, D. A. (1987). "ESR spectra of matrix-isolated lithium superoxide". The Journal of Physical Chemistry. ... MacPherson, H. G. (1934). "An Investigation of the Magneto-Optic Method of Chemical Analysis". Physical Review. American ... Their spectra are analogous to those of the alkali metals.[29] Their monopositive ions are paramagnetic and contribute no ...
Petrus K, Schwartz H, Sontag G (Jun 2011). "Analysis of flavonoids in honey by HPLC coupled with coulometric electrode array ... "The spectrum of phytoestrogens in nature: our knowledge is expanding". (review). Hormones (Athens, Greece). 6 (3): 173-93. ... "The metabolism and analysis of isoflavones and other dietary polyphenols in foods and biological systems". (review). Food & ...
By fitting the theoretical model to the measured R or T, or ψ and δ using regression analysis, n and κ can be deduced. ... The concept of refractive index applies within the full electromagnetic spectrum, from X-rays to radio waves. It can also be ... In the visual spectrum this is done using Zernike phase-contrast microscopy, differential interference contrast microscopy (DIC ... Barrell, H.; Sears, J. E. (1939), "The Refraction and Dispersion of Air for the Visible Spectrum", Philosophical Transactions ...
An analysis of the dance-related injuries in 113,084 adolescents in US emergency rooms from 1991-2007 was conducted using data ... The 21st century has introduced a broad spectrum and variety of styles, ranging from height and width of heel, to design and ...
It has long been clear that the Aethionema are sister of the remainder of the family.[9] One analysis from 2014 represented the ... which is used as a wide spectrum biological plant protection against caterpillars. Parasitoid wasps that feed on such insect ... Early DNA-analysis showed that the Capparaceae-as defined at that moment-were paraphyletic, and it was suggested to assign the ... Current insights in the relationships of the Brassicaceae, based on a 2012 DNA-analysis, are summarized in the following tree.[ ...
However, FEE analyses do not consider shortage the main factor,[321] while FAD-oriented scholars such as Bowbrick (1986) hold ... spreading across the entire spectrum of goods and services.[84] The productive capacity of Indian industry, which had been ... More recent analyses often stress political factors.[BA] Discussions of the government's role split into two broad camps: those ... Sen, Amartya (1981b). "Ingredients of Famine Analysis: Availability and Entitlements". The Quarterly Journal of Economics. 96 ( ...
a b c d Xu Y, Zheng Y. The Digit Ratio (2D:4D) in China: A Meta-Analysis. „American Journal of Human Biology". 27 (3), s. 304- ... a b c Hönekopp J. Digit Ratio 2D:4D in Relation to Autism Spectrum Disorders, Empathizing, and Systemizing: A Quantitative ... a b c Bunevicius A. The Association of Digit Ratio (2D:4D) with Cancer: A Systematic Review and Meta-Analysis. „Disease Markers ... Hönekopp J, Watson S. Meta-Analysis of Digit Ratio 2D:4D Shows Greater Sex Difference in the Right Hand. „American Journal of ...
This offers flexibility in cognitive functioning and problem solving across the whole spectrum of specialized domains.[citation ... Case and Demetriou worked together to unify their analysis of domains. They suggested that Demetriou's domains may be specified ...
Wilson, R.H.; Bray, J.W.; Kosky, P.G.; Vakil, H.B.; Will, F.G. (1992), "Analysis of experiments on the calorimetry of LiOD-D2O ... "Cold Fusion Back From the Dead", IEEE Spectrum, 41 (9): 22, doi:10.1109/MSPEC.2004.1330805. ... 2, pp.85-93 and "Atomic Structure Analysis of Pd Nano-Cluster in Nano-Composite Pd⁄ZrO2 Absorbing Deuterium" - Journal of High ... Miskelly, GM; Heben MJ; Kumar A; Penner RM; Sailor MJ; Lewis NL (1989), "Analysis of the Published Calorimetric Evidence for ...
A re-analysis and review,url=,journal=Breastfeeding Review,language=en,volume=18,issue=2,pages=25-32,pmid=20879657,via=}},/ref ... Broad-spectrum antiviral therapeutics,url=,journal=[[PLoS ONE]],language=en,volume=6,issue=7,page=e22572,pages=,bibcode= ... Sequencing and Analyses of All Known Human Rhinovirus Genomes Reveals Structure and Evolution,url=,journal=Science,language=en, ... An Individual Patient Data Meta-Analysis,url=,journal=Open Forum Infect Diseases,language=en,volume=4,issue=2,pages=ofx059,doi= ...
These allow for a broader spectrum of movement, but have made no mass-market penetration. ... "Kinetic and physiological analysis of the GameWheels system". JRRD. 39 (6): 627-34. ISSN 0748-7711 ...
Being a printed plate, the accuracy of the test depends on using the proper lighting to illuminate the page. A "daylight" bulb illuminator is required to give the most accurate results, of around 6000-7000K temperature (ideal: 6500K, Color Rendering Index (CRI) ,90), and is required for military color vision screening policy. Fluorescent bulbs are many times used in school testing, but the color of fluorescent bulbs and their CRI can vary widely. Incandescent bulbs should not be used, as their low temperature (yellow-color) give highly inaccurate results, allowing some color vision deficient persons to pass. Proper testing technique is to give only three seconds per plate for an answer, and not allow coaching, touching or tracing of the numbers by the subject. The test is best given in random sequence, if possible, to reduce the effectiveness of prior memorization of the answers by subjects. Some pseudo-isochromatic plate books have the pages in binders, so the plates may be rearranged ...
"Same DNA deletion paves paths to autism, schizophrenia , Spectrum". Spectrum. 2016-10-18. Retrieved 2016-11-13.. ... Gruneberg, H., 1938 An analysis of the "pleiotropic" effects of a new lethal mutation in the rat (Mus norvegicus). Proc. R. Soc ... "Expression of autism spectrum and schizophrenia in patients with a 22q11.2 deletion". Schizophrenia Research. 143 (1): 55-59. ... "Expression of autism spectrum and schizophrenia in patients with a 22q11.2 deletion". Schizophrenia Research. 143 (1): 55-59. ...
A new browser window opens to display the Spectrum Analysis graph.. Stop Spectrum Analysis. To stop analysis at any time, in ... then select Spectrum Analysis.. * In the Spectrum Analysis dialog box, select the band on which you want to perform analysis ... Start Spectrum Analysis. To start Spectrum Analysis:. *Select Monitor , WiFi, then select the Access Points tab. You can also ... When spectrum analysis is started, the third radio switches from scanning mode to spectrum analysis mode and the third radio ...
Benchmark Results & Final Analysis. Key Rollover And Audio. For some reason the G810 is rated for 26KRO instead of the more ... Logitech G810 Orion Spectrum Keyboard Review. by Thomas Ran May 12, 2017 at 6:00 PM. ... The Logitech G810 Orion Spectrums Romer-G keys show quite a wide, but relatively consistent, force gap. At its widest, the gap ...
Light Readings coverage of mobile spectrum issues provides insight into the trends impacting the award and use of airwaves for ... Billionaire Michael Dell Backs New Call for 5G in 12GHz Spectrum By Mike Dano, Editorial Director, 5G & Mobile Strategies, 10/8 ... Verizon is looking to purchase a number of spectrum licenses across the AWS-3 and mmWave bands, moves that show the operator ... If you like cage matches, AI-powered killer robots and 1980s sci-fi movies, youll love the Spectrum Collaboration Challenge ...
Currently I use an expensive hardware spectrum analyser with a human interpreter. The spectrum analysis software available for ... Spectrum analysis & software. by Gareth Pont » Wed Oct 05, 2005 9:36 am ... The spectrum analysers range is fixed from 0-Max. The measurement outputs can be copied to clipboard and pasted into other ...
Upstream Analyzer is a software-based application for remote upstream spectrum analysis that replaces the head-end equipment ... ZCorum Demonstrating Remote Spectrum Analysis and PNM Tools at CableLabs Winter Conference. ... They can even compare spectrum from multiple homes at the same time.. Past News Releases. RSS. *ZCorum Introduces New Outage ... RF Inspector receives the full spectrum information from the MaxLinear tuner in the cable modem and we display the signal on ...
Qualitative and quantitative spectra of purified fluoranthrene (206440), pyrene (129000), benz(c)acridine (225514), chrysene ( ... This report describes the research conducted in an effort to analyze some of the Emission Index Spectra obtained under Contract ... Tables are presented which show the analyses of the spectra of subsets H-48, H- 49, H-50, H-51, H-52, H-53, GFA-495, GFA-476, ... This report describes the research conducted in an effort to analyze some of the Emission Index Spectra obtained under Contract ...
9780769663166 Our cheapest price for Spectrum Data Analysis & Probability is $0.01. Free shipping on all orders over $35.00. ... Spectrum Data Analysis & Probability Grades 68 helps young learners improve and strengthen their math skills, such as ratios, ... The best-selling Spectrum series provides standards-based exercises developed to supplement and solidify the skills students ...
... Charalambos Chrysostomou,1 Huseyin Seker,2 and ... F. J. Harris, "On the use of windows for harmonic analysis with the discrete Fourier transform," Proceedings of the IEEE, vol. ... T. Meng, A. T. Soliman, M.-L. Shyu et al., "Wavelet analysis in current cancer genome research: a survey," IEEE/ACM ... Y. K. Choi, S. M. Goyal, M. W. Farnham, and H. S. Joo, "Phylogenetic analysis of H1N2 isolates of influenza A virus from pigs ...
There are, however, no detailed analyses of the clinical and laboratory findings in a large cohort of these children. Therefore ... Background Previous reports indicate an association between autism spectrum disorders (ASD) and disorders of mitochondrial ... Autism spectrum disorder Is the Subject Area "Autism spectrum disorder" applicable to this article? Yes. No. ...
APPARATUS FOR ABSORPTION SPECTRA ANALYSIS Filed April 2, 1962 4 Sheets-Sheet 4 22 fi-Cfl/V/Q/FYE? a? 56 H T acme-Mala? I 0.6. ... APPARATUS FOR ABSORPTION SPECTRA ANALYSIS Filed April 2, 1962 4 Sheets-Sheet l \QZQI IQC. VOL? July 25, 1967 J. B. BATSON ... APPARATUS FOR ABSORPTION SPECTRA ANALYSIS Filed April 2, 1962 4 Sheets-Sheet I N V EN TOR. 5/055 50/441 em/x; ... APPARATUS FOR ABSORPTION SPECTRA ANALYSIS Filed April 2, 1962 4 Sheets-Sheet 2 IN V EN TOR. ...
Program spectra include both the hit spectra and the error. To collect program spectra, we run a suite of test cases and ... to observations in the program spectra.. For each software unit , we define the frequency of runs . Recall that represents the ... Program Spectra Analysis with Theory of Evidence. Rattikorn Hewett. Department of Computer Science, Texas Tech University, ... Section 3 presents our approach to program spectra analysis, an illustration on a small example program, and some ...
Evidence Analysis:. Photonics Spectra. Nov 1998 Photonics Growing Role in Solving Major Crimes. Michael D. Wheeler, News ... Photonics Spectra Industrial Photonics BioPhotonics EuroPhotonics Photonics Showcase Photonics Buyers Guide Photonics Handbook ... Our Publications Photonics Spectra BioPhotonics Industrial Photonics EuroPhotonics Photonics Showcase Photonics Buyers Guide ... In our investigation, Photonics Spectra talked to chief medical examiners, forensic crime lab directors, document examiners and ...
Discover Book Depositorys huge selection of Spectrum Analysis, Spectrochemistry, Mass Spectrometry Books online. Free delivery ...
signal analysis using spectrum analyser : Kindly send in the information about signal analysis using spectrum analyser. I would ... Re: signal analysis using spectrum analyser You may be interested in a couple of our products for NDT signal analysis, ICEPak ... for analyses that are much more powerful than simple spectral analysis and the MM Pattern Recognition Manual. Check out ICEPak ...
Gastrointestinal Symptoms in Autism Spectrum Disorder: A Meta-analysis. Barbara O. McElhanon, Courtney McCracken, Saul Karpen, ... Gastrointestinal Symptoms in Autism Spectrum Disorder: A Meta-analysis. Barbara O. McElhanon, Courtney McCracken, Saul Karpen, ... Gastrointestinal Symptoms in Autism Spectrum Disorder: A Meta-analysis Message Subject (Your Name) has sent you a message from ... Gastrointestinal Symptoms in Autism Spectrum Disorder: A Meta-analysis. Barbara O. McElhanon, Courtney McCracken, Saul Karpen ...
Baldwin provides the code and explains the requirements for using spectral analysis to resolve spectral peaks for pulses ... The spectral analysis. The spectral analysis computes the spectra at 400 equally spaced frequencies between zero and the ... The spectrum of the bursts. If you perform spectral analysis on each of the five individual 400-sample windows containing the ... Recall from the previous lesson entitled Spectrum Analysis using Java, Sampling Frequency, Folding Frequency, and the FFT ...
ProductsMachine Vision Image AnalysisEasySegmentDeep Learning LibraryEuresysimagingmachine visionEurope ...
The Spectrum Compact CE System is an integrated instrument for sequencing and fragment analysis. It is designed for use with ... existing sequencing chemistries using fluorescently labeled dideoxynucleotide triphosphate and for fragment analysis using ... GeneMarker®HID Software for Spectrum CE System (GMHID-Spectrum) supports data analysis with all commercially available human ... Spectrum Compact Strip Base & Retainer, 32-Well. 4 each. CE2340. Spectrum Compact Capillary Cartridge, 4-Capillary 36 cm. 1 ...
Vibration spectrum analysis by Steve Goldman - 1991 - 223 pages. Vibrational analysis of cyclic molecules by Robert Henry Rouda ... Visual lines for spectrum analysis by Donald Murgatroyd Smith - 1928 - 34 pages. ... Visual lines for spectrum analysis by Donald Murgatroyd Smith - 1928 - 34 pages. ... Uranium gamma spectrum by P. R. Bell, R. C. Davis, J. E. Francis, Judith M. Cassidy, U.S. Atomic Energy Commission, Oak Ridge ...
The power spectrum indicates the power of each frequency component of ... AcqKnowledge can be used to obtain the power spectrum of any time domain waveform. ... Gas Analysis +. Accessories. Airflow Transducers. Calibration. Gas Analysis Modules. Masks & T-valves. Mixing Chambers. ... Gas Analysis +. Accessories. Airflow Transducers. Calibration. Gas Analysis Modules. Masks & T-valves. Mixing Chambers. ...
Analysis of dispersive spectrum splitting systems Author(s): Juan M. Russo; Shelby Vorndran; Yuechen Wu; Raymond Kostuk ... Dispersive spectrum splitting systems rely on optical elements that use diffraction or refraction for spectral separation. The ... Spectrum splitting configurations distribute incident photons onto several single bandgap PV cells that are spatially separated ... and the PV cell aperture and position can be used to tailor the spectral shape of the incident spectrum into each of the PV ...
The OSA application lowers CWDM and DWDM installation and maintenance costs by providing industry leading spectral analysis of ... The CMA5000A Optical Spectrum Analysis (OSA) application is the ideal single solution for facilitating accurate and efficient ... When characterizing and documenting such stringent performance levels, the CMA5000a Optical Spectrum Analysis (OSA) application ... Exclusive Channel Select option allows user to drop a wavelength for additional analysis for any modulation rate up to 40Gb/s ( ...
In this study we combined eQTL mapping and phenotypic spectrum analysis to predict gene regulatory relationships. Five pairs of ... Combining gene expression QTL mapping and phenotypic spectrum analysis to uncover gene regulatory relationships. ... Our results show that the combination of gene eQTL mapping and phenotypic spectrum analysis may provide a valuable approach to ... 2004) Genetic analysis of genome-wide variation in human gene expression. Nature 430: 743-747PubMedCrossRefGoogle Scholar ...
Meta-Analysis; Research Support, N.I.H., Extramural; Twin Study ... Sequence Analysis*BLAST (Basic Local Alignment Search Tool). * ... Prioritization and association analysis of murine-derived candidate genes in anxiety-spectrum disorders.. Hettema JM1, Webb BT ... Prioritization and Association Analysis of Murine-Derived Candidate Genes in Anxiety-Spectrum Disorders ... We combined genome-wide association analysis of fear-related behaviors with strain distribution pattern analysis in ...
A new technique that identifies early differences in vocal development between children with an autism spectrum disorder or ... The study, published this week in the Proceedings of the National Academy of Sciences suggest that this vocal analysis system, ... "Based on the results reported here, there appears to be little reason for doubt that totally automated analysis of well ... Though this is just the first study to incorporate the automated vocal analysis tool, researchers are hopeful that subsequent ...
Multistage sensing is a novel concept that refers to a general class of spectrum sensing algorithms that divide the sensing ...
Advanced analysis for hot-carriers photoluminescence spectrum Author(s): Hamidreza Esmaielpour; Maxime Giteau; Amaury Delamarre ... However, this analysis is not trivial, especially for nanostructured materials, such as quantum wells, with a modified density ... emitted PL spectrum with the generalized Plancks law and discuss under what conditions it is possible to simplify the analysis ... Hot carrier temperature can be determined via fitting the emitted PL spectrum with the generalized Plancks law. ...
Spectrum Analysis Spectrum analysis involves the use of special RF equipment designed to listen to and analyze the frequency ... The spectrum pane is similar to the one you can see in Chanalyzer, a spectrum analysis application by MetaGeek that comes with ... Spectrum Data Graphs When Wi-Spy is plugged in, a live spectrum picture is displayed on the Channels and Spectrum pane of the ... CommView for WiFi can perform spectrum analysis by interfacing with Wi-Spy, a USB-based spectrum analyzer. Wi-Spy can be ...
A recent market study published by FMI on the optical spectrum analyzer market includes a global industry analysis 2014-2018 & ... Optical Spectrum Analyzer Market: Global Industry Analysis 2014-2018 & Opportunity Assessment 2019-2029. ... Optical Spectrum Analyzer Market: Global Industry Analysis 2014-2018 & Opportunity Assessment 2019-2029. Aug 2019, FMI023B, ... This chapter includes a detailed analysis of the growth of the North America optical spectrum analyzer market, along with a ...
With good understanding of the meaning of the plot display, full spectrum analysis can be helpful in analyzing a variety of ... Don Bently was responsible for the "…development and commercialization of full spectrum data presentation format, showing ...
  • Upstream Analyzer is a software-based application for remote upstream spectrum analysis that replaces the head-end equipment operators would normally use to monitor and troubleshoot upstream issues in the HFC plant. (prweb.com)
  • CommView for WiFi can perform spectrum analysis by interfacing with Wi-Spy , a USB-based spectrum analyzer. (tamos.com)
  • A recent market study published by FMI on the optical spectrum analyzer market includes a global industry analysis 2014-2018 & opportunity assessment 2019-2029, and delivers a comprehensive assessment of the most important market dynamics. (bccresearch.com)
  • After conducting thorough research on the historical as well as current growth parameters of the optical spectrum analyzer market, the growth prospects of the market are obtained with maximum precision. (bccresearch.com)
  • The report starts with the executive summary of the optical spectrum analyzer market, which includes a summary of the key findings and statistics of the market. (bccresearch.com)
  • It also includes the demand & supply-side trends pertaining to the optical spectrum analyzer market. (bccresearch.com)
  • Readers can find the definition and a detailed taxonomy of the optical spectrum analyzer market in this chapter, which will help them understand the basic information about the optical spectrum analyzer market. (bccresearch.com)
  • This section also highlights the inclusions and exclusions, which help readers understand the scope of the optical spectrum analyzer market report. (bccresearch.com)
  • The optical spectrum analyzer market report provides key market trends that are expected to significantly impact the market growth during the forecast period. (bccresearch.com)
  • This section explains the global market value analysis and forecast for the optical spectrum analyzer market in the forecast period 2019-2029. (bccresearch.com)
  • This chapter includes a detailed analysis of the historical optical spectrum analyzer market, along with an opportunity analysis of the future. (bccresearch.com)
  • Along with this, pricing analysis of the optical spectrum analyzer market at the regional level has been provided in this section. (bccresearch.com)
  • This chapter explains key macro-economic factors that are expected to influence the growth of the optical spectrum analyzer market over the forecast period. (bccresearch.com)
  • Along with macroeconomic factors, this section also highlights the value chain, forecast factors, automotive industry outlook, top companies, and historical growth outlook for the optical spectrum analyzer market. (bccresearch.com)
  • Based on the product type, the optical spectrum analyzer market is segmented into portable, benchtop, and handheld. (bccresearch.com)
  • In this chapter, readers can find information about the key trends and developments in the optical spectrum analyzer market and market attractiveness analysis based on the product type. (bccresearch.com)
  • This chapter provides details about the optical spectrum analyzer market based on the mode type, and has been classified into spectrometer mode and wavelength meter mode. (bccresearch.com)
  • This chapter provides details about the optical spectrum analyzer market based on the end use, and has been classified into IT & telecommunication, medical & healthcare, energy & utilities, automotive, institutions, aerospace & defence, and semiconductors & electronics. (bccresearch.com)
  • This chapter explains how the optical spectrum analyzer market will grow across various geographic regions such as North America, Latin America, Europe, East Asia, South Asia, Oceania, and Middle East & Africa (MEA), and Emerging Countries. (bccresearch.com)
  • Rohde & Schwarz (R&S) this year celebrates 20 years of spectrum analyzer development, having introduced its first instrument in 1986. (microwavejournal.com)
  • The company's first spectrum analyzer was the R&S FSA, introduced in 1986. (microwavejournal.com)
  • At that time, the FSA set standards in RF performance and simplicity of operation, along with the first color spectrum analyzer display. (microwavejournal.com)
  • The operation of a two-dimensional acoustooptic spectrum analyzer is extended to include time integration over a sequence of CCD frames. (nasa.gov)
  • Anritsu Company introduces the VNA Master MS2034A and MS2036A that offer integrated vector network analyzer (VNA), spectrum analyzer, and power meter capability in a single handheld, battery-operated, rugged instrument. (anritsu.com)
  • The power of the Sidekick as a spectrum analyzer has been huge. (ekahau.com)
  • I'm frequently asked to look for interferers and determine what they are and the spectrum analyzer features, whether built into Analyzer or Pro, have saved me quite a bit of time over the years. (ekahau.com)
  • A method to identify and mitigate radio frequency interference (RFI) in microwave radiometry based on the use of a spectrum analyzer has been developed. (mdpi.com)
  • In order to reduce the detrimental effects of RFI on brightness temperature measurements, a new spectrum analyzer has been added to the CAROLS radiometer system. (mdpi.com)
  • The OSCOR Green Spectrum Analyzer is designed to detect illicit eavesdropping signals, perform site surveys for communication systems, conduct radio frequency (RF) emissions analysis, and investigate misuse of the RF spectrum. (reiusa.net)
  • The OSCOR Green is a portable spectrum analyzer that sweeps 24 GHz in one second to quickly detect transmitting electronic surveillance devices and ensure that spectrum activity is captured. (reiusa.net)
  • A general problem in spectroscopy is the dissection of spectra of mixtures of unknown composition into the spectra of the pure constituents, thereby determining the relative amount of the components. (pnas.org)
  • Many of these more subtle features can be neglected in simple routine spectroscopy, but become important when extracting quantitative data and/or when trying to acquire and process vast amounts of spectra consistently. (helsinki.fi)
  • The increased capability of NMR spectroscopy, the rising interest in metabolomics and for example the recent introduction of benchtop NMR spectrometers are likely to expand the future use of quantitative NMR in the analysis of complex mixtures. (helsinki.fi)
  • A widespread proteomics procedure for characterizing a complex mixture of proteins combines tandem mass spectrometry and database search software to yield mass spectra with identified peptide sequences. (nih.gov)
  • In mass spectrometry-based proteomics, frequently hundreds of thousands of MS/MS spectra are collected in a single experiment. (mcponline.org)
  • SimGlycan also supports multistage mass spectrometry (MS n ) data analysis for isomers differentiation. (premierbiosoft.com)
  • One of the products ZCorum will be demonstrating is RF Inspector, an app the company is selling for $9.95 per year, which can replace the meter that would normally be used to analyze downstream spectrum. (prweb.com)
  • This report describes the research conducted in an effort to analyze some of the Emission Index Spectra obtained under Contract No. 099- 71-0042. (cdc.gov)
  • Hence, by taking advantage of these properties, it is possible to analyze most substances both quantitatively and qualitatively by absorption spectral analysis. (google.com)
  • Spectrum analysis involves the use of special RF equipment designed to listen to and analyze the frequency bands utilized by Wi-Fi devices. (tamos.com)
  • In spectrum analysis of naturally occurring audio signals , we nearly always analyze a short segment of a signal, rather than the whole signal. (dsprelated.com)
  • In this blog post, we will give an introduction to how you can analyze a structure subjected to a short transient excitation being described by a response spectrum. (comsol.com)
  • The method-ready In-Service Lubricants Analysis System provides everything you need to analyze samples to industry standards, following ASTM and JOAP methodology. (perkinelmer.com)
  • To increase the amount of information that can be extracted from proteomic MS/MS datasets we developed a robust method that detects high quality spectra within the fraction of spectra unassigned by conventional sequence database searching and computes a quality score for each spectrum. (mcponline.org)
  • We also demonstrate that iterative search strategies applied to such detected unassigned high quality spectra significantly increase the number of spectra that can be assigned from datasets and that biologically interesting new insights can be gained from existing data. (mcponline.org)
  • Remarkably easy to use, you can be confident in generating consistent quality spectra. (perkinelmer.com)
  • Acetylene in nematic liquid crystals: A vibrational analysis of the observed dipolar couplings. (ebscohost.com)
  • We use small, high current density, hollow-cathode $cells^{3}$ with water cooling in order to record both emission $spectra,^{4}$ with a Bomem FT spectrometer, and absorption spectra, with a diode laser spectrometer. (osu.edu)
  • The Spectrum Two spectrometer with KBr optics and a standard, high-performance room temperature LiTaO 3 (lithium tantalate) detector delivers a spectral scan range of 8,300 - 350 cm -1 whilst offering 0.5 cm -1 resolution and 9,300:1 peak-peak signal-to-noise ratio for a 5 second scan in a sleek, compact design. (perkinelmer.com)
  • Attendees will learn the requirements of EELS camera and spectrometer settings needed to push the limits of spectrum image performance. (gatan.com)
  • The spectrum analysis software available for the picoscopes looks very basic and appears to always run from zero up to the maximum selected frequency. (picotech.com)
  • Another previous lesson entitled Spectrum Analysis using Java, Sampling Frequency, Folding Frequency, and the FFT Algorithm presented and explained several Java programs for doing spectral analysis. (developer.com)
  • In that lesson, I used a DFT program to illustrate several aspects of spectral analysis that center around the sampling frequency and the Nyquist folding frequency. (developer.com)
  • An understanding of the lesson entitled Spectrum Analysis using Java, Sampling Frequency, Folding Frequency, and the FFT Algorithm is also a prerequisite to an understanding of this lesson. (developer.com)
  • In addition, I will use the following programs that I explained in the lesson entitled Spectrum Analysis using Java, Sampling Frequency, Folding Frequency, and the FFT Algorithm . (developer.com)
  • Select 2.4 GHz , 5.0 GHz , or Dual to have the spectrum pane display one of the single frequency bands or two bands simultaneously ( 5.0 GHz and Dual are available only if you have a dual-band Wi-Spy model. (tamos.com)
  • The spectrum, in the 600 MHz frequency band, would come from TV broadcasters. (investors.com)
  • The name "singular spectrum analysis" relates to the spectrum of eigenvalues in a singular value decomposition of a covariance matrix, and not directly to a frequency domain decomposition. (wikipedia.org)
  • Thus, SSA can be used as a time-and-frequency domain method for time series analysis - independently from attractor reconstruction and including cases in which the latter may fail. (wikipedia.org)
  • SCA deals with the prediction problem of continuing a frequency spectrum beyond a sampled (usually stochastic) time series fragment. (wikipedia.org)
  • Therefore, to perform a spectrum analysis having time- and frequency-resolution comparable to human hearing , we must limit the time-window accordingly. (dsprelated.com)
  • We will see that the main benefit of choosing a good Fourier analysis window function is minimization of side lobes , which cause ``cross-talk'' in the estimated spectrum from one frequency to another. (dsprelated.com)
  • Computing a sinusoidal model entails fitting the parameters of a sinusoid (amplitude, frequency, and sometimes phase) to each peak in the spectrum of each time-segment. (dsprelated.com)
  • Indexing Terms------------------------- REPORTNUM: GAO-01-795 ACCNO: A01430 TITLE: Defense Spectrum Management: More Analysis Needed to Support Spectrum Use Decisions for the 1755-1850 MHz Band DATE: 08/20/2001 SUBJECT: Cellular telephone International agreements Radio frequency allocation Telecommunication Army Mobile Subscriber Equipment Program ****************************************************************** ** This file contains an ASCII representation of the text of a ** ** GAO Testimony. (globalsecurity.org)
  • Access to the radio frequency spectrum is also critically important to federal, state, and local governments for national security, public safety, and other governmental functions. (globalsecurity.org)
  • The radio frequency spectrum is the portion of electromagnetic spectrum that carries radio waves. (globalsecurity.org)
  • This study was conducted to determine the frequency of morphologic spectrum of ovarian tumors and the role of immunohistochemistry in definite histogenesis of poorly differentiated or undifferentiated ovarian malignancies. (thefreelibrary.com)
  • The input to a shock response analysis is a response spectrum, which contains an amplitude as function of the frequency. (comsol.com)
  • The report reviews briefly several methods for interpreting neutron scattering data in terms of center frequency of infrared and Raman Spectra. (dtic.mil)
  • We show that sympathetic and parasympathetic nervous activity make frequency-specific contributions to the heart rate power spectrum, and that renin-angiotensin system activity strongly modulates the amplitude of the spectral peak located at 0.04 hertz. (sciencemag.org)
  • The parameters of the models are simultaneously estimated through a global fitting to the observed power spectrum in the time-frequency domain. (cam.ac.uk)
  • Currently I use an expensive hardware spectrum analyser with a human interpreter. (picotech.com)
  • Time-resolved absorption spectrum analysis system has been saved to your wishlist successfully. (hamamatsu.com)
  • The time-resolved absorption spectrum analysis system is a device to perform transient absorption spectrum measurements in extremely short time. (hamamatsu.com)
  • Kindly send in the information about signal analysis using spectrum analyser. (ndt.net)
  • Analysis of peptide MS/MS spectra from large-scale proteomics experiments using spectrum libraries. (nih.gov)
  • Of these, a relatively small fraction is confidently assigned to peptide sequences, whereas the majority of the spectra are not further analyzed. (mcponline.org)
  • Third, the development of computational tools for the assignment of MS/MS spectra to peptide sequences and the statistical validation of these assignments support the consistent analysis of large datasets with no or minimal human intervention ( 5 ). (mcponline.org)
  • In most high throughput studies, peptide identification is performed by searching MS/MS spectra against protein sequence databases. (mcponline.org)
  • These programs correlate the experimental MS/MS spectra with theoretical fragmentation patterns of peptides obtained from a sequence database and use various scoring schemes to find the best matching peptide sequence. (mcponline.org)
  • This high throughput protein identification process, however, is prone to false positives resulting from incorrect peptide assignments to MS/MS spectra by the database search tools ( 5 , 18 - 21 ). (mcponline.org)
  • These tools reduce the need for time-consuming manual verification of peptide assignments and allow faster and more consistent analysis of large scale datasets ( 5 ). (mcponline.org)
  • Despite the progress in developing new database search tools and methods for statistical validation of peptide assignments to MS/MS spectra, the number of spectra that remain "unassigned" ( i.e. the sequence of the peptide that produced the spectrum is not known) in any experiment is significant. (mcponline.org)
  • Spectrum Data Analysis & Probability Grades 68 helps young learners improve and strengthen their math skills, such as ratios, graph interpretation, and measures of central tendency. (ecampus.com)
  • Interpretation of gas chromatographic spectra in routine analysis of gasoline exhaust hydrocarbons. (cdc.gov)
  • RF Inspector receives the full spectrum information from the MaxLinear tuner in the cable modem and we display the signal on the technician's mobile device or PC just as they would see it on a meter. (prweb.com)
  • Helms added that RF Inspector roadmaps seamlessly into next-generation 16 and 24 channel modems utilizing Intel® Puma™ 6 and MaxLinear Full-Spectrum Capture™ receivers. (prweb.com)
  • Don Bently was responsible for the "…development and commercialization of full spectrum data presentation format, showing forward and reverse precession components…" as stated on the Bently Pressurized Bearing web site (http://www.bpb-co.com). (cmva.com)
  • With good understanding of the meaning of the plot display, full spectrum analysis can be helpful in analyzing a variety of different machinery faults. (cmva.com)
  • Spectrum Pharmaceuticals is scheduled to release their next quarterly earnings announcement on Tuesday, March 5th 2019. (marketbeat.com)
  • The aim of this systematic review was to report pregnancy and perinatal outcomes of coronavirus spectrum infections, and particularly coronavirus 2019 (COVID-19) disease because of severe acute respiratory syndrome-coronavirus-2 infection during pregnancy. (unboundmedicine.com)
  • Most existing spectrum-based approaches rely on similarity measures to locate faulty software units by identifying the units that most resemble the spectra error outcomes [ 9 - 15 ]. (hindawi.com)
  • Reducing the burden of ASD on both families and society is limited as a result of the great heterogeneity in symptom presentation seen across the autism spectrum, and reliance on behavioral observation rather than objective biomarkers for diagnosing the condition and evaluating intervention outcomes. (frontiersin.org)
  • Bishop-Fitzpatrick L, Hong J, Smith LE, Makuch RA, Greenberg JS, Mailick MR. (2016) Characterizing Objective Quality of Life and Normative Outcomes in Adults with Autism Spectrum Disorder: An Exploratory Latent Class Analysis . (wisc.edu)
  • Spectrum analysis helps you detect various types of interference, non Wi-Fi interference, or interference that can also be transient in nature that decreases the performance of your wireless network. (watchguard.com)
  • Response spectrum analysis is used to determine the maximum value of displacements, stresses, or any other result quantity in a structure during a short transient event. (comsol.com)
  • By using the streak camera as the detector and performing multiple-wavelengths time-resolved measurements with a single shot, time-resolved absorption spectra and transient absorption time-resolved spectral images can be measured simultaneously, and you can obtain images of irreversible phenomenon. (hamamatsu.com)
  • Resonance Raman spectra of polymer chains in the single crystals of the diacetylenes FBS (2,4-hexadiynylene-di-p-fluorobenzene sulfonate), TS/FBS [6-(p-toluenesulfonyloxy)-2,4-p-fluorobenzene sulfonate] and TS6 (2,4-hexadiynylene-di-p-toluene sulfonate) are described theoretically by means of a Franckâ€"Condon model, which considers a chain length dependence. (ebscohost.com)
  • The method, singular value decomposition with self-modeling (SVD-SM), is tested on simulated difference spectra designed to mimic the photocycle of the Asp-96 → Asn mutant of bacteriorhodopsin. (pnas.org)
  • The third radio allows a dedicated source for a consistent spectrum analysis. (watchguard.com)
  • Although patterns of trait covariation were generally consistent with the leaf economic spectrum, we found three approximate tiers to this consistency. (wur.nl)
  • The aim is to determine the power spectrum that is consistent with given moments and minimizes the relative entropy between the probability law of the underlying Gaussian stochastic process to that of a prior. (diva-portal.org)
  • The condition that fluorescence or absorption spectra have no negative intensities permits their normalization before the analysis, ensuring that the derived spectra of the pure components also are normalized ( 3 ). (pnas.org)
  • The Channel selection option then expands the measurement capabilities by allowing the user to detect and drop any channel from a DWDM system for further analysis. (anritsu.com)
  • MS2034A/MS2036A light weight (4 kg), three-plus hour battery life, and advanced measurement and analysis capability make it well suited for a variety of field applications. (anritsu.com)
  • Ditch the dongles and upgrade to the most precise Wi-Fi diagnostics and measurement device for faster, more accurate Wi-Fi site surveys and spectrum analysis. (ekahau.com)
  • click below to search the Signals & Measurements index or to learn about the variety of data and analysis options related to an Application area, choose from the list below. (biopac.com)
  • With our largest library, the search of a query set finds 91% of the spectrum identifications and 93.7% of the protein identifications that could be made with a SEQUEST database search. (nih.gov)
  • High resolution spectrum analysis of RF signals is required in applications such as the search for extraterrestrial intelligence, RF interference monitoring , or general purpose decomposition of signals. (nasa.gov)
  • The difference spectra of the intermediates are determined in eigenvector space by confining the search for their coordinates to a stoichiometric plane. (pnas.org)
  • Principal component analysis (PCA) yields orthonormal spectral eigenvectors, and the corresponding combination coefficients are determined as dot products between the eigenvectors and the mixture spectra ( 1 ). (pnas.org)
  • The combination coefficients of the normalized spectra of a rank-two matrix are points along a normalization line, as one coefficient is plotted versus the other. (pnas.org)
  • The combination coefficients of the pure spectra are sought on the same line beyond the points corresponding to measured spectra during self-modeling (SM) ( 3 , 4 ). (pnas.org)
  • When three pure forms are present, points defined by the combination coefficients of mixture spectra fall within a triangle on the normalization plane in three-dimensional space. (pnas.org)
  • 1. Considering the problem of Newmark design spectrum, this study establishes a system of site design spectrum coefficients to modify the Newmark design spectrum. (uwaterloo.ca)
  • In a typical experiment, many spectra are measured, and the variation of an experimental parameter provides a systematic change in the contribution of the pure components to each mixture spectrum. (pnas.org)
  • The spectra are arranged in a matrix so that the experimental parameter varies along one of the dimensions. (pnas.org)
  • The rank is calculated based on a robust scoring mechanism that considers structure specific diagnostic ions observed in the experimental MS/MS spectra as well as the intensity of those observed peaks. (premierbiosoft.com)
  • The application of these tools is demonstrated in the analysis of complex hydrocarbon mixtures (base oils), plant extracts and blood plasma samples. (helsinki.fi)
  • The duration of the event is short, so it is not possible to perform an analysis based on the statistical properties of an input signal, as you would do in a random response analysis. (comsol.com)
  • 3. This study investigates contribution of ground motions (i.e., tuning cases) to the uncertainty of floor response spectrum, and established the statistical relationship between t-response spectrum and ground response spectrum. (uwaterloo.ca)
  • Using this statistical relationship, probabilistic floor response spectrum by the direct spectra-to-spectra method considering random ground motions could be constructed. (uwaterloo.ca)
  • Statistical and spectral analysis techniques may be used to quantify the wave loads and the corresponding structural responses. (dtic.mil)
  • Users can perform common spectrum monitoring, interference analysis, and general purpose signal measurements with a single key selection, a much safer and simpler alternative to previous multiple-instrument approaches. (anritsu.com)
  • Sub-Hertz resolution in three-dimensional acoustooptic spectrum analysis is theoretically and experimentally demonstrated. (nasa.gov)
  • Here, we present comprehensively different methods to determine carrier temperature via fitting the emitted PL spectrum with the generalized Planck's law and discuss under what conditions it is possible to simplify the analysis. (spie.org)
  • The course will be useful for those scientists who are already familiar with the foundations of XAFS experiment, theory and data analysis, and seek training in advanced methods. (bnl.gov)
  • The emphasis will be on applications of XAFS to nanomaterials but we will welcome all participants who are interested in modern analysis methods. (bnl.gov)
  • Topics covered will include theory of XANES, data analysis using XANES, structural refinement using XANES, molecular dynamics, reverse Monte Carlo and machine learning methods and their application to XANES data analysis. (bnl.gov)
  • The core of response spectrum analysis is the different methods by which the modes are combined in order to estimate the total peak response. (comsol.com)
  • Newmark design spectrum and Uniform Hazard Spectrum on soil surface, and floor response spectrum constructed by current methods do not properly meet the requirements of performance-based seismic design: 1. (uwaterloo.ca)
  • The original research presented in this thesis provides improved methods for data acquisition of quantitative 13C detected NMR spectra in the form of modified INEPT based experiments (Q-INEPT-CT and Q-INEPT-2D), while software tools for automated processing and analysis of NMR spectra are also presented (ImatraNMR and SimpeleNMR). (helsinki.fi)
  • For this reason, the further development of robust, accurate and feasible analysis methods and tools is essential. (helsinki.fi)
  • Both methods are useful for typing K. pneumoniae strains in epidemiological investigations, although RAPD analysis is more efficient. (asm.org)
  • Power spectrum analysis of heart rate fluctuations provides a quantitative noninvasive means of assessing the functioning of the short-term cardiovascular control systems. (sciencemag.org)
  • We present here a framework called Harmonic-Temporal Clustering (HTC) which relies on the description of the power spectrum as a combination of constrained Gaussian Mixture Models. (cam.ac.uk)
  • Such analyses will require more systematic research and clinical activities, including improved diagnostic screening, standardized assessment, and exploration of potential moderators (eg, dietary restrictions). (aappublications.org)
  • Recent advances in mammalian phenotype annotation such as mammalian phenotype ontology (MPO) enable systematic analysis of the phenotypic spectrum subserved by many genes. (springer.com)
  • Spectrum analysis enables you to visualize the radio frequencies operating in your area and determine the strength of the detected signals. (watchguard.com)
  • Consider a hypothetical situation in which you are performing spectral analysis on underwater acoustic signals in an attempt to identify enemy submarines. (developer.com)
  • The second-generation instruments (the R&S FSE family) made it possible for the first time to perform modulation analysis of digitally-modulated signals. (microwavejournal.com)
  • Two discriminant analyses based on the computation of kurtosis and Euclidian distances have been compared evaluated and validated in order to accurately separate the RF interference from natural signals. (mdpi.com)
  • Prioritization and association analysis of murine-derived candidate genes in anxiety-spectrum disorders. (nih.gov)
  • We combined genome-wide association analysis of fear-related behaviors with strain distribution pattern analysis in heterogeneous stock mice to identify a preliminary list of 52 novel candidate genes. (nih.gov)
  • Let's begin by looking at the time series data that will be used as input to the first spectral analysis experiment. (developer.com)
  • Large numbers (on the order of 10 5 ) of MS/MS spectra acquired in each experiment need to be computationally processed to identify peptides that produced them and to infer what proteins were present in the original sample. (mcponline.org)
  • We also study the quantity and quality impacts of program spectra on our approach where the quality refers to the spectra support in identifying that a certain unit is faulty. (hindawi.com)
  • WASHINGTON - The advocacy group Food & Water Watch released an extensive analysis today documenting the significant anti-competitive, anti-consumer and anti-environmental impacts of the proposed merger between Enbridge Inc. and Spectra Energy Corp. Food & Water Watch called on the Federal Trade Commission (FTC) to extend its review of the massive, ill-advised fossil fuel infrastructure merger and ultimately block the deal. (commondreams.org)
  • Is the Subject Area "Autism spectrum disorder" applicable to this article? (plos.org)
  • In pediatric settings, parents often raise concerns about possible gastrointestinal (GI) symptoms in autism spectrum disorder (ASD), yet the specificity of these concerns are not well studied. (aappublications.org)
  • Autism spectrum disorder (ASD) is a neurodevelopmental condition that unfolds in the first few years of life and involves severe impairments in social interaction and communication, with concomitant restriction in interests and extreme attachment to routine or to repetitive or perseverative behaviors. (aappublications.org)
  • A new technique that identifies early differences in vocal development between children with an autism spectrum disorder or language delay and those developing on a normal trajectory could give pediatricians and other caregivers a tool for earlier detection of autism, and as a result facilitate earlier intervention. (time.com)
  • Impaired social cognition is a cardinal feature of Autism Spectrum Disorders (ASD) and Schizophrenia (SZ). (plos.org)
  • Sugranyes G, Kyriakopoulos M, Corrigall R, Taylor E, Frangou S (2011) Autism Spectrum Disorders and Schizophrenia: Meta-Analysis of the Neural Correlates of Social Cognition. (plos.org)
  • One of the innovations of the DSM-III in the late 1970s was to separate autism spectrum disorders (ASD) from schizophrenia (SZ) into different diagnostic categories. (plos.org)
  • The use of genome-wide tests to provide molecular diagnosis for individuals with autism spectrum disorder (ASD) requires more study. (nih.gov)
  • This chapter presents the analysis of physician-diagnosed International Classification of Diseases (ICD version 9) disorders and diseases associated with autism spectrum disorders (ASD) in a 16-year pediatric cohort. (frontiersin.org)
  • In this study, we investigate if differences in interaction between different brain regions for subjects with autism spectrum disorder (ASD) and healthy controls can be captured using resting-state fMRI. (spie.org)
  • Youth diagnosed with an Autism Spectrum Disorder (ASD). (clinicaltrials.gov)
  • A number of recent studies using accelerometer features as input to machine learning classifiers show promising results for automatically detecting stereotypical motor movements (SMM) in individuals with Autism Spectrum Disorder (ASD). (frontiersin.org)
  • Autism Spectrum Disorder (ASD) is a complex neurodevelopmental disorder characterized by common behavioral and social characteristics that can significantly impact daily living for individuals with ASD and their families. (frontiersin.org)
  • Raising a child with an autism spectrum disorder (ASD) is a stressful experience and has been associated with poor maternal mental health and increased maternal emotional distress. (scielo.org.za)
  • The past decade has witnessed a dramatic increase in the number of children diagnosed with Autism and Autism Spectrum Disorders (ASD). (scielo.org.za)
  • Furthermore, Posserud, Lundervold and Gillberg (2006) reported that 2.7% of a non-clinical sample of 9430 Scandinavian children between the ages of seven and nine years were classified as having achieved high scores on certain domains of the Autism Spectrum Screening Questionnaire (ASSQ) as rated by their teachers and parents. (scielo.org.za)
  • Ben-Sasson A, Robins DL, Yom-Tov E. Risk Assessment for Parents Who Suspect Their Child Has Autism Spectrum Disorder: Machine Learning Approach. (jmir.org)
  • Krsmanović S, Grujičić R, Herrera A, Rudić N, Jeremić M, Pejović-Milovančević M. First symptoms and support / aid to families children with disoerders of Autism spectrum. (jmir.org)
  • The increasing public awareness of autism spectrum disorders (ASD) leads more parents to suspect ASD in their child. (jmir.org)
  • You can perform response spectrum analyses with a study type introduced in version 5.4 of the COMSOL Multiphysics® software. (comsol.com)
  • What Is Response Spectrum Analysis? (comsol.com)
  • Aside from earthquake mechanics, shock response spectrum analysis is also used on a smaller scale. (comsol.com)
  • For instance, it is a common requirement that electronic equipment contains a specified response spectrum . (comsol.com)
  • A response spectrum analysis is based on a superposition of eigenmodes, and it assumes that the response of the structure is predominantly linear. (comsol.com)
  • The response spectrum actually shows how a simple system with a single degree of freedom would respond to a given base acceleration. (comsol.com)
  • Find the full theory behind shock response spectrum analysis here . (comsol.com)
  • For each eigenfrequency of the structure, the corresponding value from the response spectrum is multiplied with the modal participation factor in order to determine the peak displacement of that mode when excited in a certain direction. (comsol.com)
  • When you are performing a response spectrum in COMSOL Multiphysics, the core of the computations is actually done on the fly during the result evaluations. (comsol.com)
  • The study is an ordinary eigenfrequency study, and all response-spectrum-specific settings are done using a special dataset. (comsol.com)
  • Some default values have been changed for convenience, but you can actually use any eigenfrequency study step as a basis for response spectrum analysis. (comsol.com)
  • you can just manually add the Response Spectrum node under Definitions . (comsol.com)
  • So, what does the Response Spectrum node do? (comsol.com)
  • Once you have computed the eigenfrequencies, you can add one or more Response Spectrum 2D or Response Spectrum 3D datasets, depending on the dimensionality of your component. (comsol.com)
  • Adding a dataset for response spectrum evaluation. (comsol.com)
  • There is a multitude of settings for the response spectrum datasets that we will go over, but you can start by selecting the relevant eigenfrequency solution in the Data section. (comsol.com)
  • Thus, the desired design response spectrum is not realistically and reliably represented. (uwaterloo.ca)
  • 3. An efficient method to generate probabilistic floor response spectrum considering random ground motions has not been addressed. (uwaterloo.ca)
  • The direct spectra-to-spectra method to generate floor response spectrum is superior to the time history analysis method in efficiency. (uwaterloo.ca)
  • However, this method is not applicable currently to generate probabilistic floor response spectrum. (uwaterloo.ca)
  • Spectrum-based fault localization basically tries to identify the part of the program whose activity correlates most with the resulting passed or failed test runs. (hindawi.com)
  • The team also reviewed major caveats when employing these analyses, cellular and circuit-level correlates of EEG changes, and important differences between rodent and human EEG. (cureepilepsy.org)
  • 2002) noticed the analogy between the trajectory matrix of Broomhead and King, on the one hand, and the Karhunen-Loeve decomposition (Principal component analysis in the time domain), on the other. (wikipedia.org)
  • Since discrete Fourier transform is inherently related to Fourier analysis, this type of spectral analysis is by definition not suitable for spectrum decomposition in SCA. (wikipedia.org)
  • This meta-analysis of controlled clinical trials was conducted to evaluate whether the use of antibacterial therapy improves the clinical symptoms of inflammatory bowel disease (IBD). (nih.gov)
  • Using a mathematical theory of evidence for uncertainty reasoning, the proposed approach estimates the likelihood of faulty locations based on evidence from program spectra. (hindawi.com)
  • The approach employs the theory of evidence called Dempster-Shafer Theory [ 17 ] for uncertainty reasoning to estimate the likelihood of faulty locations based on evidence gathered from program spectra. (hindawi.com)
  • Spectrum Pharmaceuticals trades on the NASDAQ under the ticker symbol "SPPI. (marketbeat.com)
  • Spectrum Pharmaceuticals, Inc. (NASDAQ:SPPI) released its quarterly earnings data on Thursday, November, 8th. (marketbeat.com)
  • Content text analysis of the queries aimed to categorize the types of symptoms described and obtain clinical judgment of the child's ASD-risk level. (jmir.org)
  • Derivative spectral analysis is often used for the peakidentification due to its advantages in differentiatingclosely adjacent absorption peaks, identifying weakabsorption peaks obscured by sharp peaks, andidentifying wavelength at maximum absorbance forbroad spectra. (shimadzu.com)
  • 88-14) This invention relates to analytical apparatus and more particularly to absorption spectral apparatus for quantitative analysis of materials which strongly absorb radiant energy of particular wave lengths in the ultraviolet, visible or infrared spectral regions. (google.com)
  • The course will include lectures, software demonstrations, and data analysis sessions. (bnl.gov)
  • During the data analysis practicum on November 3, participants will get an opportunity to work with research projects with the help of the course instructors. (bnl.gov)
  • For supporting automated data analysis of different instrument workflows, SimGlycan includes comprehensive support for different adducts such as H, Li, Na, Mg 2+ , K, HCOO - and NH4 + and adduct combinations such as Na + H, Li + H etc. (premierbiosoft.com)
  • MS/MS fragmentation patterns of glycans and glycopeptides (based on different instrument settings) can be specified in order to enable the program to reduce false positives from the data analysis results. (premierbiosoft.com)
  • It also provides comprehensive support to perform MS n data analysis, which assists in resolving heterogeneity, branching patterns and isobaric oligosaccharide structures. (premierbiosoft.com)
  • I really appreciate the time you invest in helping me learn about SimGlycan and customize its workflows to suite my MS data analysis. (premierbiosoft.com)
  • Unfortunately, the neutrino community is far from promoting a common framework (like e.g. in LHC) for data analysis and statistics, even if the feeling about that item is more and more rising up. (cern.ch)
  • The same peptides are often detected in multiple experiments, and once they have been identified, the respective spectra can be used for future identifications. (nih.gov)
  • Spectra are not assigned to peptides for diverse reasons. (mcponline.org)
  • Perhaps more fundamentally from an audio modeling point of view, the ear is quite sensitive to peaks in the short-time spectrum of a sound, and a spectral peak is naturally modeled as a sinusoidal component which has been shaped by some kind of ``window function'' or `` amplitude envelope '' in the time domain. (dsprelated.com)
  • The absorption spectral apparatus of this invention is particularly useful for quantitative analysis employing infrared radiation and will be described in detail hereinafter with specific reference to various embodiments designed for use in this spectral region. (google.com)
  • Auctioning spectrum to the highest bidder can be an effective way of plugging holes in domestic budgets. (lawfuel.com)
  • Third, there had to be some mechanism for ensuring that new small carriers - including Wind Mobile, Mobilicity, Public Mobile and Videotron, all of whom got into the cellular business buying spectrum in the 2008 auction - will be assured of not being pushed out of the bidding by Rogers, Bell or Telus Communications Corp. The Big Three have over 90 per cent of the wireless subscribers. (itworldcanada.com)
  • Obviously, paired spectrum is more valuable than unpaired for cellular communications. (itworldcanada.com)
  • The purpose of spectrum analysis is to detect and identify such sources of interference, eliminate them, and/or identify the WLAN channels with minimal interference. (tamos.com)
  • Research Platforms with Acq Knowledge software provide powerful data acquisition hardware and automated analysis routines for wired, wireless, logging, and MRI setups, for human or animal studies. (biopac.com)
  • BSL Analysis software works without any data acquisition hardware connected and can be installed on multiple computers. (biopac.com)
  • WASHINGTON March 29, 2011 - With the acquisition of T-Mobile, AT&T may be not only solving a long standing question about where it would find the spectrum to deploy its planned 4G network, but also make a leap in its public image. (broadbandbreakfast.com)
  • The acquisition of T-Mobile would greatly increase the amount of spectrum and infrastructure that AT&T would possess, bringing service to a greater number of Americans. (broadbandbreakfast.com)
  • If the T-Mobile acquisition goes forward, AT&T would be able to re allocate the spectrum it acquires from T-Mobile and expand its LTE service more rapidly, closing the gap that Verizon is currently widening. (broadbandbreakfast.com)
  • The acquisition of T-Mobile would allow AT&T to cultivate an image of a faster, newer network with a larger amount of available spectrum, possibly placing it ahead of its closest competitor Verizon. (broadbandbreakfast.com)
  • However, the acquisition and basic analysis of rodent EEGs have only recently been standardized. (cureepilepsy.org)
  • Verizon is looking to purchase a number of spectrum licenses across the AWS-3 and mmWave bands, moves that show the operator continues to look for more spectrum holdings. (lightreading.com)
  • In all, AT&T now holds spectrum licenses worth more than $91 billion, estimates Goldman Sachs analyst Brett Feldman in the report. (investors.com)
  • Plans for identifying spectrum to support third generation mobile wireless systems by July 30, 2001, and to auction licenses by September 30, 2002, are premature. (globalsecurity.org)
  • GAO agrees with the Federal Communications Commission (FCC) and the Department of Commerce that delaying the identification of spectrum and auction of licenses for third generation wireless systems could serve the public interest. (globalsecurity.org)
  • Extending the current schedule for identification and auction of licenses for this portion of the spectrum would allow DOD to complete technical and operational assessments and to consider their future spectrum requirements. (globalsecurity.org)
  • Once the SM procedure locates the spectra of the pure components, reverse normalization provides their actual amplitude. (pnas.org)
  • The geometrical relationship between focusing power, the degree of dispersion, the system aperture, and the PV cell aperture and position can be used to tailor the spectral shape of the incident spectrum into each of the PV cells comprising the system. (spie.org)
  • Compared to DFT (or FFT), which is characterized by perfect spectral resolution, but poor temporal information, SCA favours temporal information, but yields higher spectrum dispersion. (wikipedia.org)
  • In general, radiation within the spectral range of 220 millimicron to microns, which includes the ultraviolet, visible and infrared regions can be used in absorption spectral analysis. (google.com)
  • Data included in each Portfolio Analysis Report from 2008 to 2012 was categorized at the time with respect to the most recent iteration of the Strategic Plan where the objectives had changed. (hhs.gov)
  • A new browser window opens to display the Spectrum Analysis graph. (watchguard.com)
  • An a priori model-independent method for the determination of accurate spectra of photocycle intermediates is developed. (pnas.org)
  • We describe an application of SVD-SM (analogous to PCA-SM) to the determination of the spectra of the intermediates in the bacteriorhodopsin photocycle. (pnas.org)
  • K. Gopalakrishnan, R. H. Zadeh, K. Najarian, and A. Darvish, "Computational analysis and classification of p53 mutants according to primary structure," in Proceedings of the IEEE Computational Systems Bioinformatics Conference (CSB '04) , pp. 694-695, August 2004. (hindawi.com)
  • Wavelet analysis in current cancer genome research: a survey," IEEE/ACM Transactions on Computational Biology and Bioinformatics , vol. 10, no. 6, pp. 1442-1459, 2013. (hindawi.com)
  • Since a number of software platforms and increased computational power have become widely available, advanced rodent EEG analysis is now more accessible to investigators working with rodent models of epilepsy. (cureepilepsy.org)
  • Given a closed Riemannian manifold and a generalized Laplace $\Delta$ operator, it is well known that $\Delta$ has discrete spectrum $(\lambda_n)_n$ (arranged in a increasing way, not counting multiplicities). (mathoverflow.net)
  • In SCA however, one decomposes the spectrum into optimized discrete frequencies. (wikipedia.org)
  • The company's roadmap calls for eventually moving T-Mobile's subscribers off the 1700 megahertz 3G spectrum they currently occupy. (broadbandbreakfast.com)
  • provides you an in-depth strategic SWOT analysis of the company's businesses and operations. (marketresearch.com)
  • SWOT Analysis - A detailed analysis of the company's strengths, weakness, opportunities and threats. (marketresearch.com)
  • United States General Accounting Office Washington, DC 20548 Page 2 GAO- 01- 795 Defense Spectrum Management use of a limited amount of spectrum, today and in the future, is a challenging and complex task due to competing industry and governmental demands. (globalsecurity.org)