Solid-state nucFluorescence correlationMass spectrometryNuclear overhauser effect sNear-infrared speDistortionless enhancement by polarization transferDiffuse correlation spectroscopyPositron emission tCircular dichroismOverhauser enhancement spectroscopyExperimentsPhotoelectron spectroscopy2018MeasurementsElectronSpectraProtonImagingChemistryCharacterizationUltravioletNucleiVivo magneticCalculationJournalCerebralAbstractMolecularPhysiologicalProbesStructuralCorticalDensitiesApproachNeurosurgeryTechniquesStudyBrain
Solid-state nuc2
- Because (1)H spectra in solid-state nuclear magnetic resonance (NMR) suffer from low resolution due to homogeneous broadening, even under magic-angle spinning (MAS), information of chemical interest may only be obtained using certain high-resolution (1)H MAS techniques. (ua.pt)
- Molecular dynamics simulations and solid-state nuclear magnetic resonance spectroscopy measurements of C-H bond order parameters and effective correlation times in a POPC-GM3 bilayer. (lu.se)
Fluorescence correlation2
- To complement the structural information obtained by nuclear magnetic resonance and, especially, measure the rate of information transfer across the androgen receptor we will carry out in a collaborative fashion high precision single molecule Förster resonance energy transfer and fluorescence correlation spectroscopy experiments on AR constructs labelled with fluorescent dyes. (europa.eu)
- Our fluorescence product line includes steady-state spectrofluorometers, spectrometers for the determination of multiple decay times, time-resolved laser scanning confocal microscopes, a spectrometer for fluorescence correlation spectroscopy and a particle-tracking system for single molecule detection. (iss.com)
Mass spectrometry7
- The chemical structure of the new molecule was fully characterized by proton nuclear magnetic resonance ( 1 H-NMR), carbon-13 nuclear magnetic resonance ( 13 C-NMR), heteronuclear single quantum coherence (HSQC), correlation spectroscopy ( 1 H- 1 H-COSY), distortionless enhancement by polarization transfer (DEPT), mass spectrometry, Fourier-transform infrared (FTIR), and ultraviolet (UV) spectroscopies. (mdpi.com)
- Modern analytical techniques have been applied in structural characterization of ARPs, such as circular dichroism, infrared spectroscopy, fluorescence spectroscopy, mass spectrometry, and nuclear magnetic resonance (NMR) spectroscopy [ 12 ]. (hindawi.com)
- 9 problems 89 9.1 organic structures from spectra 89 9.2 the analysis of mixtures 373 9.3 problems in 2-dimensional nmr … The first three focus on infrared spectroscopy, mass spectrometry, and 1D NMR spectroscopy. (alidade-conseil.com)
- For the structural instrumental analysis of EPS, the following methods were applied: GC-MS (gas chromatography mass spectrometry) and correlated two-dimensional NMR (nuclear magnetic resonance) techniques - DEPT 135 (distortionless enhancement by polarization transfer), COSY (correlation spectroscopy), and HSQC (heteronuclear single quantum coherence). (ac.rs)
- The resulting emissive polymers were characterized with one-dimensional (1H) and two-dimensional (1H1H correlation spectroscopy) nuclear magnetic resonance and infrared spectroscopy, gel permeation chromatography, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and the successful coordination of the iridium(III) centers to the 2,2-bipyridine macroligand was revealed. (tue.nl)
- Topics covered include nuclear magnetic resonance (NMR), mass spectrometry (MS), infrared (IR), ultraviolet (UV), circular dichroism (CD) and optical and chiroptical (UV, CD and optical rotatory dispersion (ORD)) methods. (chemistryworld.com)
- Chapters on mass spectrometry outline the principles of MS and explain modern ionisation techniques, giving nice descriptions of, for example, quadrupole and linear ion trap analysers, time of flight detectors, ion cyclotron resonance, ion mobility mass analysers. (chemistryworld.com)
Nuclear overhauser effect s2
- Nuclear magnetic resonance studies (Job plot,1H, 2D correlations spectroscopy, nuclear overhauser effect spectroscopy, and rotating-frame overhauser enhancement spectroscopy) confirmed the stoichiometry 1:1 between MXD and HP-β-CD providing information about the exact geometry of the inclusion complex. (uniba.it)
- There are excellent NMR chemical shift tables, and the text develops extremely well from the basics of 1 H- and 13 C-NMR, through multidimensional techniques nuclear Overhauser effect spectroscopy (NOESY), rotating frame NOESY (ROESY) and total correlation spectroscopy (TOCSY), progressing to decoding stereochemical issues using Murata's homo- and heteronuclear coupling constant relationships. (chemistryworld.com)
Near-infrared spe10
- S. Lee, M. Lee, D. Koh, B. M. Kim, and J. H. Choi*, 'Cerebral hemodynamic responses to seizure in the mouse brain: simultaneous near-infrared spectroscopy-electroencephalography study,' Journal of Biomedical Optics , vol. 15, p. 037010, May-Jun 2010. (jeelab.net)
- S tudy of the FMRI blood oxygen level dependent effect by near-infrared spectroscopy. (jeelab.net)
- Fast cerebral functional signal in the 100ms range detected in the visual cortex by frequency-domain near-infrared spectroscopy. (jeelab.net)
- Detection of the fast neuronal signal on the motor cortex using functional frequency domain near infrared spectroscopy. (jeelab.net)
- Mapping of hemodynamics with near infrared spectroscopy of the human calf tissue and the influence of the adipose tissue thickness. (jeelab.net)
- Functional Frequency-Domain Near-Infrared Spectroscopy Detects Fast Neuronal Signal in the Motor Cortex, NeuroImage 17(4), 1868-1875 (2002). (jeelab.net)
- Different time evolution of oxyhemoglobin and deoxyhemoglobin concentration changes in the visual and motor cortices during functional stimulation: A near-infrared spectroscopy study. (jeelab.net)
- Extraction of fast neuronal changes from multichannel functional near-infrared spectroscopy signals using independent component analysis. (jeelab.net)
- In this vein, functional near-infrared spectroscopy (fNIRS) is an attractive choice due to its portability, flexibility, and low cost, allowing for bedside imaging of brain function. (bvsalud.org)
- This protocol describes a study that will utilize functional Magnetic Resonance Imaging (fMRI), electroencephalography (EEG), and functional Near Infrared Spectroscopy (fNIRS) to measure and map the brain activity of acute critically ill patients. (bvsalud.org)
Distortionless enhancement by polarization transfer2
- Further structural characterization of the ARP was accomplished by using nuclear magnetic resonance (NMR) spectroscopy, including 1D 1 H NMR and 13 C NMR, the distortionless enhancement by polarization transfer (DEPT-135) and 2D 1 H- 1 H and 13 C- 1 H correlation spectroscopy (COSY) and 2D nuclear overhauser enhancement spectroscopy (NOESY). (hindawi.com)
- 1D 1 H NMR and 13 C NMR, the distortionless enhancement by polarization transfer (DEPT-135) spectrum, and 2D 1 H- 1 H and 13 C- 1 H correlation spectroscopy (COSY) were used to assign correlations between the signals in the 1 H and 13 C NMR spectra. (hindawi.com)
Diffuse correlation spectroscopy1
- Simultaneous changes in microvascular cerebral blood flow (CBF) and middle cerebral artery blood velocity (MCAvmean) were captured using diffuse correlation spectroscopy (DCS) and transcranial Doppler ultrasound (TCD), respectively. (bvsalud.org)
Positron emission t2
- This covers multiple imaging modalities including optics, magnetic resonance imaging and positron emission tomography. (bepress.com)
- A variety of imaging modalities, including structural and functional magnetic resonance imaging (MRI) and positron emission tomography (PET) studies of cerebral metabolism, have shown characteristic changes in the brain of patients with Alzheimer disease in prodromal and even presymptomatic states. (medscape.com)
Circular dichroism1
- His work focuses on the theory of magnetic spectroscopies (electron paramagnetic resonance, magnetic circular dichroism) and their experimental and theoretical application, local pair natural orbital correlation theories, spectroscopy oriented configuration interaction, electronic and geometric structure and reactivity of transition metal complexes and metalloenzymes. (wikipedia.org)
Overhauser enhancement spectroscopy1
- To confirm the connection between the amino acid and glucose, 2D nuclear overhauser enhancement spectroscopy (NOESY) experiments were performed. (hindawi.com)
Experiments1
- In dynamic nuclear polarization nuclear magnetic resonance (DNP-NMR) experiments, the large Boltzmann polarization of unpaired electrons is transferred to surrounding nuclei, leading to a significant increase in the sensitivity of the NMR signal. (weizmann.ac.il)
Photoelectron spectroscopy2
- NMR results, supported by X-ray photoelectron spectroscopy and electron microscopy, reveal that the actual composition of the deposited layer is an amorphous Al-O-F phase. (weizmann.ac.il)
- Nitrogen is electron binding energies of a series of neuroleptics in the solid state have been obtained by X-ray photoelectron spectroscopy. (aspetjournals.org)
20181
- 7. Yao Luo, Jun Zhang, Lin Chen, Shuhui Cai*, Congbo Cai*, Accelerating multi-slice spatiotemporally encoded MRI with simultaneous echo refocusing, Journal of Magnetic Resonance 296 (2018) 12-22. (jjbgyp.com)
Measurements5
- Using a-SiC:H as a case study material, we utilize nuclear reaction analysis, Rutherford backscattering, nuclear magnetic resonance and transmission Fourier transform infra-red spectroscopy measurements to determine the average coordination () for these materials. (nist.gov)
- PURPOSE: The aim of this study was to determine the reproducibility of relaxometry in human lumbar vertebrae required for the correction of fat fraction measurements using magnetic resonance spectroscopy at 3 Tesla. (elsevierpure.com)
- FIELD STRENGTH: All subjects underwent three consecutive multi-TE/multi-TRMR spectroscopy measurements at 3 Tesla. (elsevierpure.com)
- Such information provides error estimates and guidance regarding reliability for future studies.STUDY TYPE: Prospective.SUBJECTS: Forty-six healthy volunteers (22 female [f], 24 male [m]) participated in this study.FIELD STRENGTH: All subjects underwent three consecutive multi-TE/multi-TRMR spectroscopy measurements at 3 Tesla.ASSESSMENT: A total of 2580 spectra of lumbar vertebrae L2 and L3 of 43 subjects (21f, 22m) were quantified using jMRUI software. (elsevierpure.com)
- Numerous studies are under way to identify specific imaging markers for different types of dementia, including cerebral volumetric measurements, diffusion imaging, spectroscopy, very-high-field MRI scans of senile plaques, and PET scan markers of senile plaques. (medscape.com)
Electron5
- The advantages of using multifrequency Electron Paramagnetic Resonance (EPR) in studying carbon-based materials are discussed. (benthamscience.com)
- Designs of CW and pulse Electron Nuclear Double Resonance (ENDOR) spectrometers, which are very important techniques for studying precisely hyperfine interactions and local environment of paramagnetic ions in carbon-based materials are included. (benthamscience.com)
- Hyperfine spectroscopies, ESEEM, ENDOR and HYSCORE, determined the electron hyperfine couplings of unpaired electrons with magnetic nuclei, thus allowing the evaluation of the extent of the π-system and the presence of different types of nuclei. (benthamscience.com)
- and characterized by UV-Vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning electron microscopy (SEM) and Energy Dispersive X(EDX).Characterization by the above said instrument analysis confirmed the presence, size and stability of silver nanoparticles. (iajpr.com)
- The electron donor in photosystem I (PSI), the chlorophyll dimer P700, is studied by photochemically induced dynamic nuclear polarization (photo-CIDNP) magic angle spinning (MAS) nuclear magnetic resonance (NMR) on selectively 13 C and uniformly 15 N labeled PSI core preparations (PSI-100) obtained from the aquatic plant duckweed ( Spirodela oligorrhiza ). (copernicus.org)
Spectra1
- endstream endobj startxref Title: Microsoft Word - Practice Problems on Infrared Spectroscopy.docx Author: Jose Laboy Created Date: 9/24/2013 5:01:15 PM %%EOF Match the infrared spectrum given below with one of the following compounds: CH3CH2 CH3 O O CH3 CH2 OCH2CH3 OO CH3CH2CH2 O CH2CH2CH3 OO CH3CH2CH2 Cl O. Infrared spectra for the following compounds are shown below. (alidade-conseil.com)
Proton2
- Proton magnetic resonance spectroscopy of the central, transition and peripheral zones of the prostate: assignments and correlation with histopathology. (qprostate.com.au)
- We sought to develop a clinical workflow and uniquely capable custom software tool to integrate advanced 3-tesla 3D proton magnetic resonance spectroscopic imaging ( 1 H-MRSI) into industry standard image-guided neuronavigation systems, especially for use in brain tumor surgery. (karger.com)
Imaging11
- Recently, 1 H-magnetic resonance spectroscopy chemical shift imaging (CSI) using choline/creatine (Cho/Cr) or choline/N-acetylaspartate (Cho/NAA) ratios has emerged as a new non-invasive, widely available alternative. (bmj.com)
- S imultaneous assessment of human brain functional hemodynamics by magnetic resonance and near-infrared imaging. (jeelab.net)
- In vivo magnetic resonance imaging (MRI) has highlighted the accumulation of iron in the SNpc region of the PD brain, which disrupts iron circulation pathways to create an imbalance of the metal [ 11 , 12 ]. (hindawi.com)
- Our results show that by removing systemic physiology, fNIRS can reproduce resting-state networks often reported with functional magnetic resonance imaging (fMRI). (bvsalud.org)
- Journal of Magnetic Resonance Imaging , 12.12.2017. (elsevierpure.com)
- Neumayer, B, Widek, T , Stollberger, R & Scheurer, E 2017, ' Reproducibility of relaxometry of human lumbar vertebrae at 3 Tesla usingH MR spectroscopy ', Journal of Magnetic Resonance Imaging . (elsevierpure.com)
- Coronal, T1-weighted magnetic resonance imaging (MRI) scan in a patient with moderate Alzheimer disease. (medscape.com)
- Axial, T2-weighted magnetic resonance imaging (MRI) scan reveals atrophic changes within bilateral temporal lobes with prominence of the sylvian fissures. (medscape.com)
- Magnetic resonance imaging of the brain showed diffuse white matter lesions. (cdc.gov)
- Magnetic resonance imaging of the brain of a 46-year-old immunocompromised woman with central nervous system brucellosis granuloma and white matter disease, Saudi Arabia. (cdc.gov)
- Magnetic resonance imaging (MRI) of the brain showed diffuse T2/fluid-attenuated inversion recovery hyperintense white matter lesions involving the right frontal, parietal and temporal lobes ( Figure 1 ). (cdc.gov)
Chemistry2
- Magnetic Resonance in Chemistry is a monthly peer-reviewed scientific journal covering the application of NMR, ESR, and NQR spectrometry in all branches of chemistry. (wikipedia.org)
- In 2011, he became Director of the MPI for Bioinorganic Chemistry, renamed in 2012 in MPI for Chemical Energy Conversion, where he heads the department of Molecular Theory and Spectroscopy. (wikipedia.org)
Characterization1
- TY - CONF AU - Žerađanin, Aleksandra AU - Gojgić-Cvijović, Gordana AU - Jakovljević, Dragica AU - Lončarević, Branka AU - Vrvić, Miroslav AU - Beškoski, Vladimir PY - 2017 UR - http://www.bds.org.rs/en/conferences.php UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3283 AB - The aim of this work was structural characterization of EPS produced by Brachybacterium paraconglomeratum sp. (ac.rs)
Ultraviolet1
- h�b```f`` Infrared and Ultraviolet/Visible spectroscopy questions. (alidade-conseil.com)
Nuclei1
- 1)H Lee-Goldburg (LG) CRAMPS (Combined Rotation And Multiple-Pulse Spectroscopy) methods are particularly well suited for studying inorganic-organic hybrid materials, rich in (1)H nuclei. (ua.pt)
Vivo magnetic1
- In vivo, cardiac-gated, black-blood, and ex vivo magnetic resonance microscopy (MRM) images of the aortic root, and histopathology data were obtained from 12 transgenic and wild-type (WT) mice. (mssm.edu)
Calculation1
- DATA CONCLUSION: Based on repeated acquisitions using the measurement parameters applied in this study, magnetic resonance spectroscopy allowed a reproducible calculation of the fat fraction corrected for relaxation effects. (elsevierpure.com)
Journal3
- Journal of Magnetic Resonance Series A. 102(2):195-204. (berkeley.edu)
- Journal of Magnetic Resonance Series A. 103(1):72-81. (berkeley.edu)
- Journal of Magnetic Resonance Series A. 107:236-238. (manchester.ac.uk)
Cerebral1
- Correlation analyses revealed a cerebral cortical volumetric loss of ∼ 0.11% of the intracranial vault for each daily drink (0.25 g/kg), and selective vulnerability of cortical and non-cortical brain regions. (nature.com)
Abstract1
- abstract = "BACKGROUND: MR spectroscopy is widely used for fat fraction quantification of human lumbar vertebrae. (elsevierpure.com)
Molecular3
- In CONCERT we will develop a method based on the use of nuclear magnetic resonance spectroscopy in solution that will provide very detailed descriptions of such changes by using the information about structural heterogeneity contained in a parameter that is exquisitely sensitive to molecular shape called residual dipolar coupling measured in steric alignment. (europa.eu)
- Underlying principal of infrared spectroscopy is based upon the molecular vibration which is further composed of the stretching and the bending vibration of a molecule. (alidade-conseil.com)
- Molecular mobility in keratin-rich materials monitored by nuclear magnetic resonance: A tool for the evaluation of structure-giving properties. (lu.se)
Physiological1
- While promising, fNIRS suffers from non-neural signal contaminations (i.e., systemic physiological noise), which can increase correlation across fNIRS channels, leading to spurious rsFC networks. (bvsalud.org)
Probes1
- As part of this effort, at the University of Florence we are continuously seeking Postdocs in Quantum Information Theory and Noise Sensing, who will work on the controlled and optimised manipulation of quantum probes and the analysis of spatial and temporal correlations of environmental noise. (qdab.org)
Structural1
- However, DEPT-135 and 2D NMR techniques provided more structural information to assign the 1 H and 13 C resonances of ARP. (hindawi.com)
Cortical1
Densities1
- The 13 C NMR data give a good correlation between the charges on the carbonyl carbons and the corresponding chemical shifts, thereby providing evidence for the internal consistency of the CNDO/2 (complete neglect of differential overlap) charge densities obtained for the N -ethyl analogues. (aspetjournals.org)
Approach1
- The best approach for spectroscopy problems is the following steps: Calculate the degree of unsaturation to limit the number of possible structures. (alidade-conseil.com)
Neurosurgery1
- Specifically, 3D MRSI-based overlays provide comprehensive, quantitative visual cues and location information during neurosurgery, enabling a progressive new form of online spectroscopy-guided neuronavigation. (karger.com)
Techniques2
- For example, new 3-dimensional (3D) spectroscopy techniques allow for improved correlation of metabolite profiles with specific regions of interest in anatomical tumor images, which can be useful in characterizing and treating heterogeneous tumors that appear structurally homogeneous. (karger.com)
- Raman and mid-IR spectroscopy are complementary techniques and usually both are required to completely measure the vibrational modes of a molecule. (alidade-conseil.com)
Study2
- 17O and 2H magnetic relaxation dispersion (MRD) to study urea-induced denaturation of intestinal fatty acid-binding protein (I-FABP). (lu.se)
- Neutron Spin-Echo spectroscopy (NSE) on the other hand, offers the highest energy resolution in the field of neutron spectroscopy and allows the study of slow collective motions in proteins up to several hundred nanoseconds and in the nanometer length-scale. (lu.se)
Brain2
- However, a direct correlation between iron deposition and iron transportation within the brain has not been established in PD patients [ 14 ]. (hindawi.com)
- The time has come to ask if we have invented a science (psychiatry) that has little to do with reality, and to answer that, the creation of multicentric data bases is proposed, in which biological (not just brain based), social, personal, clinical, etc. variables are integrated, to finally obtain correlations that allow us a reclassification of brain pathology that would be useful to offer integral and personalized treatments. (bvsalud.org)