• The XAS spectra of condensed matter are usually divided in three energy regions: The edge region usually extends in a range of few eV around the absorption edge. (wikipedia.org)
  • The initial release of the database contains more than 140,000 L-edge spectra for more than 22,000 structures generated using a high-throughput computational workflow. (nist.gov)
  • Structure in X-ray absorption spectra remote from the edge and extending to higher energies, due mainly to the scattering of the expelled electron by neighbouring atoms. (iupac.org)
  • At both excitation wavelengths, the transient absorption spectra exhibit a shape characteristic of excited chlorophylls with only a minor contribution from carotenoids. (acs.org)
  • The electronic structure and the UV-Vis absorption spectra of heteroannelated cyclooctatetraene derivatives are studied by density functional theory and by its non-stationary variant, the time-dependent density functional theory. (osi.lv)
  • The time-dependent density functional theory calculations enable the interpretation of electronic absorption spectra of recently synthesized quasi-circulenes and to predict the spectra of new, hypothetical molecules, which are important for the general theoretical understanding of hetero[8]circulene spectra. (osi.lv)
  • We have used synchrotron-based x-ray absorption spectroscopy to study the structure of iron silicon germanide and osmium silicide films grown by molecular beam epitaxy. (aps.org)
  • Absorption after inhalation and dermal absorption of Delta-Valerolactone is expected to be unlikely or moderate. (europa.eu)
  • Specific toxicokinetics or dermal absorption studies are not available for the substance. (europa.eu)
  • Dermal absorption is expected to be moderate with respect to the physic-chemical properties of Delta-Valerolactone. (europa.eu)
  • Based on the above information and due to the fact that there are no specific toxicokinetic data available the generic values of 50 % for oral absorption, 100 % for inhalation absorption as well as 50% for dermal absorption were derived. (europa.eu)
  • It is of particular relevance to consider the effects of the following factors on drug absorption: molecular structure, crystal structure, formulation factors, the physiological factors associated with the GI tract, and the interplay between the formulation factors and physiological factors. (nih.gov)
  • Comparison of Planck mean absorption coefficients as a function of temperature indicated unique behavior with respect to molecular structure of fuels. (umd.edu)
  • Dr. Wei Yang, an NIDDK intramural researcher in the Section on Molecular Structure, who has been awarded the Dorothy Crowfoot Hodgkin Award from the Protein Society for exceptional contributions in protein science. (nih.gov)
  • Sound absorption coefficient should be predicted to design it. (waset.org)
  • In this paper, we propose the process to estimate the sound absorption coefficient with multi-layer structure. (waset.org)
  • These properties also use predicted values by Foam-X software using the sound absorption coefficient data measured by impedance tube. (waset.org)
  • Through the measurement of the sound absorption coefficient of each material, its physical properties are calculated inversely. (waset.org)
  • The properties of each material are used to calculate the sound absorption coefficient of the multi-layer material. (waset.org)
  • Since the absorption coefficient of multi-layer can be calculated, optimization design is possible through simulation. (waset.org)
  • Then, we will compare and analyze the calculated sound absorption coefficient with the data measured by scaled reverberation chamber and impedance tubes for a prototype. (waset.org)
  • 1] J. T. Kim, "Measurement of acoustic parameters and prediction of absorption coefficient of porous soundproofing materials," Master' Thesis, KAIST, 1997. (waset.org)
  • Highly resolved infrared absorption coefficient database of fuels and combustion products (H2O, CO2, and CO from HITEMP database, and soot from modeling) were created. (umd.edu)
  • Directional radiation intensity at the fuel surface of 0.3 m methanol, heptane and toluene pool fires were solved using a one dimensional radiative transport equation for line of sight at flame centerline using the new radiation absorption coefficient database. (umd.edu)
  • Supersaturable delivery systems have been developed to improve the intestinal absorption of poorly soluble drugs. (nih.gov)
  • Figure 1 - Actigen improves the structure of the piglet intestinal tract post-weaning to aid nutrient absorption and utilisation. (allaboutfeed.net)
  • He manages grants aimed at advancing research on nutrient digestion, absorption and transport in the gastrointestinal tract, as well as the development, structure and function of the intestinal tract in health and disease. (nih.gov)
  • The central hypothesis is that the microbiota can detoxify ingested metal oxide nanomaterials, but high doses or chronic exposure can induce small intestinal dysbiosis, alter intestinal epithelial structure, and result in decreased barrier properties and nutrient absorption. (nih.gov)
  • 19:00: In der Kubatur des Kabinetts: Der Kunstsalon zeigt Experimentierfeld Fluc 2023: absorption/distortion, Dienstag, 28. (fluc.at)
  • The 'post-weaning anorexia' that young pigs experience results from a lack of nutrients feeding the gut, coupled with reduced nutrient absorption and increased local inflammation due to gastrointestinal tract disturbances. (allaboutfeed.net)
  • Before weaning, these villi, which are responsible for nutrient absorption, are tall and thin finger-like structures. (allaboutfeed.net)
  • These alterations can cause a reduction in nutrient absorption due to a loss of mature enterocytes and reduced activity of certain brush-border enzymes. (allaboutfeed.net)
  • The presence of a single species of beneficial bacteria in the model prevents changes in nutrient absorption following nanoparticle exposure, and early results suggest that nanoparticle reactivity with biological components is related to metal oxidation state. (nih.gov)
  • Part of the Armstrong ® Total Acoustics ® portfolio, the innovative ceiling provides the perfect combination of sound blocking and sound absorption in a single panel. (azobuild.com)
  • The goal of this experiment was to examine the energy absorption properties of origami-inspired and standard honeycomb structures varying the materials and wall thickness. (asu.edu)
  • The results also indicated that standard honeycomb structures perform better with lower wall thickness, but still with a rigid material. (asu.edu)
  • In vehicles with structures of a sufficiently high wall thickness with a rigid material, origami-inspired honeycomb structures could be used instead of current structures in order to better protect the passengers. (asu.edu)
  • Test method is applied for structural core materials such as honeycomb or foam and covers the determination of water absorption when immersed or in high relative humidity environments. (intertek.com)
  • Honeycomb structure has been widely used in the field of microwave absorption due to its light weight, high strength and heat resistance. (aminer.cn)
  • Whereupon through the high-frequency structure simulator (HFSS) electromagnetic simulation, Co/C absorbers with honeycomb structure were macroscopically designed, achieving an ultra-broad effective absorption bandwidth of 11.6 GHz. (aminer.cn)
  • Herein, the effective combination of electromagnetic simulation and honeycomb structure design greatly improves the absorption bandwidth of Co/C. This work paves the way for designing microwave absorption materials with broad effective absorption bandwidth. (aminer.cn)
  • ECHA-12-6-23-EN.R.7.12 Guidance on Toxicokinetics. (europa.eu)
  • Generally, Delta-Valerolactone as a small molecule with a molecular weight of 100.2 g/mol is favourable for absorption. (europa.eu)
  • Further a log Pow of 0.185 indicates that Delta-Valerolactone is favourable for absorption by passive diffusion or by passive absorption directly across the respiratory tract epithelium. (europa.eu)
  • The intestine is possibly the most important site for nutrient digestion and absorption in the pig and is a key element in gut health and immune function. (allaboutfeed.net)
  • It is clear that if the GIT is not healthy and functioning optimally, the overall performance, digestion and absorption of nutrients, disease status and physiology of pigs will suffer and, eventually, so will the producer's profitability. (allaboutfeed.net)
  • Femtosecond transient absorption spectroscopy following two-photon excitation (2PE) is used to determine the contributions of carotenoids and chlorophylls to the 2PE signals in the main plant light-harvesting complex (LHCII). (acs.org)
  • Transient absorption spectroscopy demonstrates Photosystem II-like tyrosine and metal cluster oxidation, and we measure charge separation lifetimes exceeding 100 ms, ideal for light-activated catalysis. (nature.com)
  • In this work, we present a detailed study of their local atomic environment by extended X-ray absorption fine structure at both Y K and Pr L III edges, in combination with complementary high resolution x-ray diffraction measurements. (aip.org)
  • Measurements on several EMN structures will be presented. (aps.org)
  • X-ray absorption near edge structure (XANES) measurements on both the iron silicon germinide and osmium silicide films has been performed. (aps.org)
  • Extended x-ray absorption fine structure (EXAFS) measurements have also been performed on the iron silicon germinide films. (aps.org)
  • The atomic X-ray absorption spectrum (XAS) of a core-level in an absorbing atom is separated into states in the discrete part of the spectrum called "bounds final states" or "Rydberg states" below the ionization potential (IP) and "states in the continuum" part of the spectrum above the ionization potential due to excitations of the photoelectron in the vacuum. (wikipedia.org)
  • iii) in molecules are electronic transitions to the first unoccupied molecular levels above the chemical potential in the initial states which are shifted into the discrete part of the core absorption spectrum by the Coulomb interaction with the core hole. (wikipedia.org)
  • The measures on bulk system have been compared with those obtained on powders, showing that the self-absorption effect broadens the emission spectrum and lengthens the lifetime. (edpsciences.org)
  • The XANES energy region extends between the edge region and the EXAFS region over a 50-100 eV energy range around the core level x-ray absorption threshold. (wikipedia.org)
  • Before 1980 the XANES region was wrongly assigned to different final states: a) unoccupied total density of states, or b) unoccupied molecular orbitals (kossel structure) or c) unoccupied atomic orbitals or d) low energy EXAFS oscillations. (wikipedia.org)
  • Extended x-ray absorption fine structure (EXAFS) technique was used to analyze the local structure around Mn atoms in thin films. (northwestern.edu)
  • The objectives of this project are to: 1) integrate in vivo supersaturation-precipitation mechanisms into mechanism-based oral absorption models for poorly water-soluble drugs formulated into supersaturable systems, and 2) to establish a mechanism-based in vitro-in vivo correlation (IVIVC) for these drug products. (nih.gov)
  • As a result, it was found observationally that (1) the interior of the molecular torus is not composed of continuous gas but of discrete clouds of molecular gas, and forms a dynamic structure where these molecular clouds are inflowing or outflowing, and (2) the molecular clouds are dense gas with various temperatures ranging from approximately 30 to 700 K. (jaxa.jp)
  • Soot within the flame, which has continuous band absorption at entire infrared region, absorbed much more radiation than other species, which has particular discrete band absorption, and resulted in low radiation intensity at the fuel surface. (umd.edu)
  • Here, sub-50 nm surface structuring is achieved directly on Sb2S3 thin films via microsphere femtosecond laser irradiation in far field. (hotpaper.io)
  • Such small patterns are attributed to the co-effect of microsphere focusing, two-photons absorption, top threshold effect, and high-repetition-rate femtosecond laser-induced incubation effect. (hotpaper.io)
  • Maximising the absorption of nutrients will contribute to optimal piglet performance. (allaboutfeed.net)
  • This article looks at maximising the absorption of nutrients through improved gut health to achieve optimal piglet performance and profitability in a sustainable way. (allaboutfeed.net)
  • The cloaca also plays a crucial role in the absorption of nutrients. (birdsofna.org)
  • After the absorption of nutrients, the remaining waste materials within the cloaca go through the process of solidification and become fecal matter. (birdsofna.org)
  • If this method is used when developing automotive interior materials with multi-layer structure, the development effort can be reduced because it can be optimized by simulation. (waset.org)
  • The smoothness of copper allowed the brush to glide on the surface without the interruption or absorption characteristic of wood or canvas surfaces. (cdc.gov)
  • In this research, we were able to probe the inner structure of the molecular torus in the active galactic nucleus of the galaxy IRAS 08572+3915 by making spectroscopic observations of the near-infrared absorption lines of the carbon monoxide molecules within the torus, rather than imaging the torus itself. (jaxa.jp)
  • In this work, Co/carbon (Co/C) particles with effective absorption bandwidth (EAB) (the band corresponding to the reflection loss value less than -10 dB) of 5.8 GHz were synthesized by a simple hydrothermal method. (aminer.cn)
  • The addition of aluminum and gold activates the structures plasmonically and increases the optical absorption in the TiO 2 films to above 70% in the visible and NIR spectral range. (acs.org)
  • Physiologically based absorption and PK models capture the best current understanding of the complex interplay between product attributes and human physiology. (nih.gov)
  • Citation: 'extended X-ray absorption fine structure' in IUPAC Compendium of Chemical Terminology, 3rd ed. (iupac.org)
  • Based on its physico-chemical characteristics, Delta-Valerolactone is considered to be bioavailable after oral absorption. (europa.eu)
  • Surface tension: Based on chemical structure, no surface activity is predicted. (europa.eu)
  • An electrophysiological recording below the chemical structure illustrates the large potentiation of the GABA response when allopregnanolone is co-applied. (nih.gov)
  • Following early experimental and theoretical works in the thirties, in the sixties using synchrotron radiation at the National Bureau of Standards it was established that the broad asymmetric absorption peaks are due to Fano resonances above the atomic ionization potential where the final states are many body quasi-bound states (i.e., a doubly excited atom) degenerate with the continuum. (wikipedia.org)
  • 2. A setup for synchrotron-radiation-induced total reflection X-ray fluorescence and X-ray absorption near-edge structure recently commissioned at BESSY II BAMline. (nih.gov)
  • However, if extensive supersaturation-induced precipitation occurs in the upper gastrointestinal (GI) tract before the solubilized drug can be sufficiently absorbed, a reduced absorption rate and suboptimal systemic exposure could occur. (nih.gov)
  • All particles contain purely maghemite, as shown by X-ray absorption fine structure spectroscopy. (iucr.org)
  • Intertek provides water absorption verification of structured core materials by ASTM C272. (intertek.com)
  • Contributions fall under the following headings: (i) Concrete durability aspects, (ii) Condition assessment of concrete structures, (iii) Modern materials technology, (iv) Concrete repair, rehabilitation and retrofitting, (v) Performance and health monitoring, and (vi) Education, research and specifications. (routledge.com)
  • Major attention is paid to innovative materials for durable concrete construction, integrated service life modelling of reinforced concrete structures, NDE/NDT and measurement techniques, repair methods and materials, and structural strengthening and retrofitting techniques. (routledge.com)
  • The oscillatory structure extending for hundreds of electron volts past the edges was called the "Kronig structure" after the scientist, Ralph Kronig, who assigned this structure in the high energy range ( i.e., for a kinetic energy range - larger than 100 eV - of the photoelectron in the weak scattering regime) to the single scattering of the excited photoelectron by neighbouring atoms in molecules and condensed matter. (wikipedia.org)
  • Here, we propose the idea of an embedded insulated metallic nanopattern (EIMN) to efficiently avoid the recombination effect while maintaining high light absorption in an ultrathin film format in which hot electron physics can contribute. (aps.org)
  • Here, we report the rational design, X-ray crystal structure, and electron transfer activity of a multi-cofactor protein that incorporates essential elements of photosynthetic reaction centers. (nature.com)
  • This Small Business Innovation Research Phase II project will construct and test an accelerating-focusing Rectangular Cavity Biperiodic Structure (RCBS) to be used in an electron Race Track Microtron (RTM). (nsf.gov)
  • Cryo-electron microscopy structure of the µ-opioid receptor bound to the bitopic ligand "C6guano" revealed that the positively charged guanidine group of the ligand engages the Asp2.50 residue in the sodium binding site. (nih.gov)
  • 9. Direct Determination of Oxidation States of Uranium in Mixed-Valent Uranium Oxides Using Total Reflection X-ray Fluorescence X-ray Absorption Near-Edge Spectroscopy. (nih.gov)
  • The protein normally resides in a cell structure called the Golgi apparatus, which modifies newly produced proteins, including enzymes. (nih.gov)
  • A model of the GI tract and a panel of functional assays have been developed, and preliminary data shows that dietary doses of pristine metal oxide nanoparticles decrease mineral, glucose, and lipid absorption. (nih.gov)
  • This structure will be manufactured and tuned, its electrodynamic characteristics will be measured, and then it will be subjected to a full range of field tests. (nsf.gov)
  • Comprehensive mapping of the human LS, from the microscopic to the anatomical/clinical scale is needed to advance the fundamental understanding of LS structure and function, its coordination and interactions with other body tissues and organs, and to provide the basis for new avenues in the clinical management of LS dysfunction in a variety of LDs and many other conditions. (nih.gov)
  • Design/methodology/approach - Using data from students enrolled in a large hospitality program located in the Southwestern USA, the study validates a variant of the technology acceptance model, extended with constructs such as cognitive absorption and security that capture better the context of IMT in hotels. (deepdyve.com)
  • Yet these natural protein structures carry an evolutionary legacy of complexity and fragility that encumbers protein reengineering efforts and obfuscates the underlying design rules for light-driven charge separation. (nature.com)
  • To this end, we have designed a photosynthetic reaction center protein maquette (the RC maquette) and solved its X-ray crystal structure in multiple states of assembly. (nature.com)
  • In the small intestine, this protein helps control the absorption of copper from food. (nih.gov)
  • In the Golgi apparatus, the ATP7A protein supplies copper to certain enzymes that are critical for the structure and function of bone, skin, hair, blood vessels, and the nervous system. (nih.gov)
  • A shortage of this protein impairs the absorption of copper from food and prevents its normal distribution to cells throughout the body. (nih.gov)
  • Several gas molecules of environmental and domestic significance exhibit a strong deep-UV absorption. (mdpi.com)
  • This energy region has been called later (in 1982) also near-edge X-ray absorption fine structure (NEXAFS), which is synonymous with XANES. (wikipedia.org)
  • The L-edge X-ray Absorption Near Edge Structure (XANES) is widely used in the characterization of transition metal compounds. (nist.gov)
  • Methods were also developed to optimize these rectangular accelerating-focusing structures by varying both the cavity and beam aperture dimensions, thus allowing a beam to be tailored to a specific application. (nsf.gov)
  • Infrared absorption coefficients of various gas and liquid fuels (propane, n-heptane, methanol, toluene, propylene and methyl methacrylate) were measured using high temperature Fourier transform infrared spectroscopy (FTIR) for a range of temperatures up to 1000 K in order to facilitate calculation of radiative absorption of fuel molecules in large-scale, non-premixed flames. (umd.edu)
  • The local environment around Ge(IV) in 0.002 to 0.023 m aqueous solutions at ambient temperature was characterised as a function of pH and in the presence of different organic ligands (citric and oxalic acids, and catechol) using high resolution X-ray absorption fine structure spectroscopy (XAFS). (hal.science)
  • The deformation modes, shock resistance capability, and energy absorption performance are studied, and the influences of specimen curvature, blast impulse, and geometrical configuration are discussed. (intechopen.com)
  • Above the IP the absorption cross section attenuates gradually with the X-ray energy. (wikipedia.org)
  • The results indicate that origami-inspired structures perform best at energy absorption at a higher wall thickness with a rigid material. (asu.edu)
  • Results indicate that the deformation/failure, deflection response, and energy absorption of curved sandwich panels are sensitive to the loading intensity and geometric configuration. (intechopen.com)
  • Here, the authors use a combination of x-ray photoelectron spectroscopy (XPS) and C, O, and N K-edge near-edge x-ray absorption fine structure (NEXAFS) spectroscopy to examine the local geometric and electronic structure of the incorporated nitrogen species. (tamu.edu)
  • X-ray absorption fine structure (XAFS) is a specific structure observed in X-ray absorption spectroscopy (XAS). (wikipedia.org)
  • X-ray-absorption fine-structure experiments at different temperatures in ZnSexTe1−x (x=0, 0.1, 0.2, 0.55, 0.81, 0.93, 0.99, and 1.0) have been performed in order to obtain information about the structural relaxation and disorder effects occurring in the alloys. (uv.es)
  • By analyzing the XAFS, information can be acquired on the local structure and on the unoccupied local electronic states. (wikipedia.org)
  • The local structure exhibits systematic variations as a function of the film composition. (aip.org)
  • The cation coordination in the second and third coordination shells changes with composition and is equal to the average concentration, implying that the Pr x Y 2−x O 3 films are indeed fully mixed and have a local bixbyite structure with random atomic-scale ordering. (aip.org)
  • The ability to obtain and integrate the knowledge about the great diversity of local and shared structures and functions within the distributed LS remains a major challenge. (nih.gov)
  • These results are significant to guide the engineering applications of sandwich structures with metallic foam cores subjected to air-blast loading. (intechopen.com)