Results 311 to 320 of about 2,870,954 (374)
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NBO 7.0: New vistas in localized and delocalized chemical bonding theory

Journal of Computational Chemistry, 2019
We briefly outline some leading features of the newest version, NBO 7.0, of the natural bond orbital (NBO) wavefunction analysis program. Major extensions include: (1) a new NPEPA module implementing Karafiloglou's “polyelectron population analysis” in ...
E. Glendening, C. Landis, F. Weinhold
semanticscholar   +1 more source

Infrared Pseudo Matrix Isolation: A Catalog of Spectra for Chemical Analysis

1970
Spectrometry is becoming increasingly relevant in fuel research. As our consumption of fuels is growing, our concern for the multidisciplinary problems of environmental control becomes more pressing. Here, chemistry is deeply implicated. Fundamental questions remain to be answered, and there is an insistent demand for technological solutions to well ...
openaire   +1 more source

Analysis and testing of polymer matrix composites with thermoplastic liners having enhanced chemical resistance

Journal of Reinforced Plastics and Composites, 2017
Polymer matrix composite tanks offer major advantages to the transport industry in terms of increased payload and corrosion resistance compared to conventional steel tanks. Chemical resistance and versatility can be enhanced through the addition of a thermoplastic liner. This paper presents the results of chemical conditioning, testing and analysis of
Luke P Djukic   +4 more
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Recursive NARX model identification of nonlinear chemical processes with matrix invertibility analysis

Computers & Chemical Engineering, 2019
Abstract In the learning techniques based on kernel or orthogonal basis functions, the nonlinearity in the underlying complex dynamic process is modelled by a linear combination of a set of kernel or orthogonal basis functions. Once these functional parameters are selected, the learning task boils down to solving linear least squares (LS).
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Chemical analysis and distribution investigation of trace elements in indium matrix by spark source mass spectrometry

Fresenius' Zeitschrift für analytische Chemie, 1987
High-purity indium was analysed by spark source mass spectrometry, using electrical and photoplate detection. For the calibration of the differences in elemental sensitivity, a standard sample was prepared in which 10 impurities were determined by graphite furnace atomic absorption spectrometry. In this way accuracies of less than 40% were obtained for
X. D. Liu, P. Van Espen, F. Adams
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Vibrational Analysis of 1,3,3-Trinitroazetidine Using Matrix Isolation Infrared Spectroscopy and Quantum Chemical Calculations

The Journal of Physical Chemistry A, 1997
Author Institution: Chemistry Division, U.S.Naval Research Laboratory; DEPARTMENT OF CHEMISTRY, UNIVERSITY OF NEW ...
Craig A. Thompson   +4 more
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Multichannel Mueller matrix analysis of the evolution of the microscopic roughness and texture during ZnO:Al chemical etching

Conference Record of the Thirty-first IEEE Photovoltaic Specialists Conference, 2005., 2005
Transparent conducting oxides (TCOs) are used in thin film silicon (Si:H) photovoltaics (PV) technology as top electrical contacts and as the components of back-reflecting structures. TCOs are often prepared with macroscopically rough interfaces and/or surfaces (i.e., with "texture") in order to scatter light and thereby enhance optical path lengths in
null Chi Chen   +4 more
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Direct Analysis of Volatile Methylsiloxanes in Gaseous Matrixes Using Atmospheric Pressure Chemical Ionization-Tandem Mass Spectrometry

Analytical Chemistry, 2009
Atmospheric pressure chemical ionization-tandem mass spectrometry (APCI-MS/MS) was applied for the first time to the direct analysis of octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) in gaseous matrixes without extraction or prior chromatographic separation.
Koffi, Badjagbo   +4 more
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A holistic approach combining factor analysis, positive matrix factorization, and chemical mass balance applied to receptor modeling

Environmental Monitoring and Assessment, 2013
Rapid urbanization and population growth resulted in severe deterioration of air quality in most of the major cities in India. Therefore, it is essential to ascertain the contribution of various sources of air pollution to enable us to determine effective control policies.
N, Selvaraju, S, Pushpavanam, N, Anu
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Integrative and Personalized QSAR Analysis in Cancer by Kernelized Bayesian Matrix Factorization

Journal of Chemical Information and Modeling, 2014
With data from recent large-scale drug sensitivity measurement campaigns, it is now possible to build and test models predicting responses for more than one hundred anticancer drugs against several hundreds of human cancer cell lines.
Muhammad Ammad-ud-din   +7 more
semanticscholar   +1 more source

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