... Abstract : The absorptive peripheral model using a mixture of pion and vector meson exchange is used to analyze data on K (plus or minus) p to K ...
DTIC Science & Technology
Jun 7, 2002 ... The ratio (R) between the mean SCRF and the mean TCRF is one of the absorption parameters that will be compared to the model calculations ...
NASA Website
A convolution model to convert some absorption model into a partial covering absorption. If the absorption model is M(E) then this is converted to ...
... An analysis of cavity perturbation for verifying the new absorption model revealed a limitation of a standard form of cavity perturbation theory and ...
... The absorption characteristics of the stack were simulated using COMSOL finite element modeling and theoretical analysis performed using ...
This paper models the absorption phenomena of light in a three level diode pumped alkali laser system. Specifically this model calculates for a user defined set of system parameters the attenuation of the input pump beam and characteristics of the bleache...
National Technical Information Service (NTIS)
The approximate barium X-ray atomic absorption in the energy region of L-edges is reconstructed from the absorption spectrum of an aqueous solution of BaCl(2). The result is corroborated by comparison with pure atomic absorption spectra of neighbour elements Xe and Cs. The application of the atomic absorption ...
PubMed
A detailed numerical model is presented for the Catalytically Enhanced Solar Absorption Receiver (CAESAR). CAESAR is a high-temperature chemical reactor for the carbon dioxide reforming of methane. Concentrated solar energy is volumetrically absorbed thro...
Experimental results and an analysis are given for absorption of nitric oxide in buffered ferrous EDTA aqueous solution. The analysis uses the film model for parallel irreversible absorption of two gases (NO and O(sub 2)) by a solute (ferrous EDTA) at a f...
This program is concerned with the phenomenological analysis of high- energy two-body scattering processes in terms of the absorption model. Rather than employ the impact-parameter representation and the subsequent approximations required by such a procedure, the program expands the s-channel helicity amplitudes in exact ...
Energy Citations Database
Drug absorption is a very complex process that manifests itself through potential interaction with a host of physicochemical and physiological variables. Some factors that may affect the absorption processes include presystemic metabolism/efflux, the "absorption window" along the gastrointestinal tract, disease states, demographics ...
We investigated nonlinear refraction, nonlinear absorption, and saturable absorption of polymethine dyes by the Z-scan technique (?=1064 nm). The analysis of simultaneous appearance of several nonlinear optical processes in dye solutions excited by picosecond pulses was carried out. The saturable absorption was ...
NASA Astrophysics Data System (ADS)
The determination of absorption by particles using the quantitative filter technique requires correction for the amplified pathlength. A spectrally-dependent correction factor was developed that reduced errors in the estimation of magnitude and spectral shape of particle absorption to less than 20% and 15%, respectively. Previous ...
A new approach to the analysis of x-ray absorption fine structure (XAFS) data is presented. It is based on the use of radial distribution functions directly calculated from a single-particle ion hamiltonian containing model potentials. The starting point ...
An analysis is presented for the radiative cooling and nongray self-absorption effects on the radiating stagnation region shock layer and heat transfer using approximate nongray step models for the absorption coefficient. The results lend support to the p...
... concentration of Na+, Mg2+, K+, and Ca2+ by atomic absorption spectrophotometry with a Perkin�Elmer Model 5000 spectrophotometer (Perkin- ... used to prepare serial dilutions for analysis by atomic absorpt...
NBII National Biological Information Infrastructure
The general five-parameter band model for molecular absorptance in the infrared is used in the generation of numerous model variations in order to perform a feasibility analysis of band model representation of the 15-micron CO2 band. The accuracy of the m...
The purpose of this study is to summarize water, carbohydrate (CHO), and electrolyte absorption from carbohydrate-electrolyte (CHO-E) solutions based on all of the triple-lumen-perfusion studies in humans since the early 1960s. The current statistical analysis included 30 reports from which were obtained information on water ...
Since conventional absorption models often fail to describe plasma concentration�time profiles following oral administration, empirical input functions such as the inverse Gaussian function (IG) have been successfully used. The purpose of this note is to extend this model by adding a first-order absorption ...
PubMed Central
Here we give a brief overview of some investigations of the gravitational microlensing influence on broad absorption spectral lines of lensed QSOs. Especially, we consider the microlensing influence on the Fe K? broad absorption lines using a model of an accretion disk covered by an absorption region. Gravitational ...
... with an atmospheric model [Liebe et al., 1993] for gazeous absorption. ... Bourras D., 1999: Estimation par satellite du flux de chaleur latente ? la ...
... of fabricating quantum wires that can provide extremely high electron mobility and high optical absorption, the Aharonov-Bohm effect along with its ...
... use the representation to expand: (1.31) Page 30. 19 ... longer ignore Heisenberg's Uncertainty Principle. Tightly clustered around the upper ...
... in a three level diode pumped alkali laser system ... saturation frequencies, pump attenuation ... Descriptors : *DIODES, *ALKALINITY, *APPROXIMATION ...
The properties of the imaginary part of the potential of a spherical optical model associated with channels with excitation of 2/sub 1/+ states of the target nucleus are analyzed. A formula is obtained for calculation of the local equivalent potential for absorption. The method proposed for parametrization of the absorption potential ...
Page 1. i Modeling Multiple Scattering and Absorption for a Differential Absorption LIDAR System by Daniel D. Blevins BS ...
We collect information for 88 broad absorption line quasars (BALQSOs) from the literature and existing catalogues, creating the largest BALQSOs sample analyzed optically and X-ray to date. We performed a full X-ray spectral analysis with different models on the sample of 39 sources with higher number of counts, and an approximate ...
... Title : ANALYSIS OF THE PURE ROTATIONAL ABSORPTION SPECTRA OF HYDROGEN SULFIDE AND DEUTERIUM SULFIDE. ...
... Accession Number : AD0251549. Title : ABSORPTION ANALYSIS APPLIED TO NEUTRONS IN A THERMAL COLUMN. ...
A physical model of calcium absorption was developed from analysis of data obtained on 23 subjects, including 13 patients having a variety of abnormalities of calcium metabolism. The model was tested and found consistent in all subjects studied. This technique provides a quantitative description of the rate of ...
... Accession Number : AD0635023. Title : THE ABSORPTIVE PERIPHERAL MODEL,. Corporate Author : ILLINOIS UNIV URBANA. ...
... Title : Modeling the Effects of Variations and Absorption on the Transition Radiation Produced From a Stack of Foils. Descriptive ...
... Accession Number : AD0614085. Title : MODEL ATMOSPHERES DETERMINED BY ABSORPTION OF SOLAR RADIATION,. ...
It is demonstrated by means of numerical analysis that absorption of light in glasses in the IR region, 30~\\mathrm {cm}^{-1} \\lesssim \\omega \\lesssim 10^3~\\mathrm {cm}^{-1} , can be understood in terms of light absorption in their crystalline counterparts. This signifies the important role of local structural motifs (units) ...
This article describes the analysis of electromagnetic energy absorption properties of models of the human eye with common visual disorders. The investigation addresses two types of visual disorders, namely hyperopia (or farsightedness) and myopia (or nearsightedness). Calculations were carried out using plane multilayered method with ...
The allowed intraband optical transitions in a quantum dot are considered in the context of their application in quantum-well IR detectors and unipolar semiconductor lasers. The atom-like quantum dot is described by using the harmonic oscillator model. An expression is obtained for the absorption cross section which is independent of the wavelength and the ...
The subject of analysis is a non-linear three-compartment model, widely used in pharmacological absorption studies. It has been transformed into a general form, thus leading automatically to an appropriate approximation. This made the absorption profile accessible and expressions for absorption ...
A reaction cavity frequency stabilizer and reaction cavity absorption detector for microwave measuring circuits were analysed by a new diode model. This new diode model is a simple analytical function which is suitable for describing, with satisfactory ac...
... Scanning Absorption-Emission Techniques for Three ... POLLUTANTS, TOMOGRAPHY, X RAY ABSORPTION ANALYSIS, CHEMICAL ...
A new approach to refinement of the parameters determining the absorption of radiation by a single-crystal specimen is used to refine the structural models of three ellipsoidal crystals and a polyhedral crystal. The use of this approach significantly increased the relative precision of the structural results. In three cases, this method made it possible to ...
We present a practical application of a phenomenological model for physicochemical atomization processes in determining heavy metal content by electrothermal atomic absorption spectrometry. Comparison of the analysis results with the NAHRES-33 (IAEA/AL/079) certificate of composition confirms the feasibility of using the proposed ...
In this study, we have validated the CRTM modules (gaseous absorption model, cloud absorption and scattering model, and surface emissivity models over ...
A new method is presented for analyzing the effects of self-absorption on photoluminescence integrating sphere quantum yield measurements. Both the observed quantum yield and luminescence spectrum are used to determine the self-absorption probability, taking into account both the initial emission and subsequent absorption and ...
Recently, in analogy with multiphoton ionization, it has been suggested that multiparticle ionization can also be induced by massive systems. We explore in this paper the possibility that multiparticle absorption processes can also take place for massive particles. To study it we consider, in a perturbative way, a model of absorption ...
We analyze the absorption of solar radiation by silicon nanowire arrays, which are being considered for photovoltaic applications. These structures have been shown to have enhanced absorption compared with thin films, however the mechanism responsible for this is not understood. Using a new, semi-analytic model, we show that the ...
as tracer materials, and atomic absorption spectrophotometry as an ... with cesium analysis by atomic absorption spectrophotometry. ...
... Accession Number : AD0704956. Title : USE OF ATOMIC ABSORPTION SPECTROPHOTOMETER FOR ANALYSIS OF CEMENT. ...
TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY VERIFICATION ANALYSIS FOR USE IN THE COMBUSTION OPTIMIZATION AND ...
... IN VIVO ANALYSIS, SKIN(ANATOMY), TOXICOLOGY, FUEL ADDITIVES, NAPHTHALENES, TRANSDERMAL ABSORPTION, DODECANE. ...
... Title : ABSORPTION LINE SERIES AND AUTOIONIZATION RESONANCE STRUCTURE ANALYSIS IN THE ULTRAVIOLET SPECTRUM OF SR I,. ...
A model is derived for the resonance absorption of molecular bands composed of Lorentzian lines is suitable for calculating fluorescence from irradiated air. The model is based on an explicit functional form derived for the resonance absorption of a singl...
... extinction coefficient. The absorption coefficient data are used to determine parameters in a multiphoton absorption model. The ...
... INDUCED FLUORESCENCE, *LASER APPLICATIONS, MATHEMATICAL MODELS, EMISSION, REPRINTS, LIGHT SCATTERING, ABSORPTION ...
... Descriptors : *LAYERS, *INFRARED DETECTORS, *ABSORPTION, MATHEMATICAL MODELS, OPTICAL PROPERTIES, THIN FILMS ...
... LIGHT, SCATTERING, ABSORPTION, REFLECTION, QUANTUM THEORY, MATHEMATICAL MODELS, ATOMIC ENERGY LEVELS ...
The polychrome analysis of biological samples can yield information usually masked in monochrome or even color analysis. This paper shows that after an accurate choice of the spectral bands, the information obtained can be useful for image analysis purposes (such as segmentation) and also for biochemical analysis ...
E-print Network
An analysis of THz waves propagation in dense, collisional, thermal, magnetized and bounded plasma is presented. By introducing the dielectric constant of a warm magnetoplasma and using the method of impedance transformation with multiple dielectrics, the coefficients of power reflection (R) and absorption (A) are derived for a bounded plasma ...
Miscellaneous Auroral Models. Auroral Oval Representation � Auroral Absorption Model � * Go to the Model Web Models home page.
A comparative analysis has been performed to compare the cooling and dehumidification performance of future ventilation-mode desiccant systems, proposed advanced absorption systems, and conventional vapor compression systems. A common framework has been developed for direct comparison of these different cooling technologies; this method is described in ...
The absorptive peripheral model using a mixture of pion and vector meson exchange is used to analyze data on K (plus or minus) p to K* (plus or minus) (890)P at momenta approx. = 3 GeV/c. The vector meson exchange couplings are obtained phenomenologically...
This procedure describes maintenance practices for the Perkin Elmer (PE) Model ZL5100 PC atomic absorption spectrometer with graphite furnace. It was required that the procedure be performed daily by the instrument operator during periods of analysis and recorded in the instrumen...
EPA Science Inventory
Since the 1980s, a considerable body of research has been dedicated to the development of in silico models for the prediction of human pharmacokinetic data based on absorption in a series of discreet intestinal compartments. While some of these models have been successfully used to predict future pharmacokinetic results or to explain ...
. The effect of an equilibrium flow on resonant absorption of linear Alfv'en waves in coronal loops is studied in compressible viscous MHD. The study is carried out with a finite element code which solves the equations of viscous MHD in the whole volume of the equilibrium model. Computations of resonant absorption of Alfv'en waves are ...
An approach to X-ray attenuation correction for diffraction anomalous fine-structure (DAFS) measurements is presented, taking into account energy-dependent secondary extinction effects. A numerical model based on the kinematical theory of diffraction is presented. This model is exemplified by DAFS measurements of the Zr 0002 reflection intensities for ...
Analysis of energy propagation and absorption in ion-cyclotron heating of tokamak plasmas has relied on numerical solutions of fourth (and sixth) order differential equations for slab models of the plasma (poloidal) cross section. Realistic two-dimensional and fully toroidal geometry analyses would become quite unwieldy. It is shown ...
