Results 291 to 300 of about 1,175,148 (341)
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Quantitative Electron Spectroscopic Analysis of the Surface Chemistry of Bituminous Coal
Energy & Fuels, 1996ESCA has been used to analyze coals from four seams : Illinois No. 6, Kentucky No. 9, Upper Freeport, and Pittsburgh. The coal was analyzed in raw, milled, and agglomerated forms. The coal was simultaneously analyzed for the effects of different storage conditions (air, water, or nitrogen gas atmosphere) over a 17 month period.
Cara L. Weitzsacker, Joseph A. Gardella
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Teaching quantitative analysis after organic and physical chemistry
Journal of Chemical Education, 1960Analytical chemistry as practiced by the contemporary professional cannot be taught at the sophomore level.
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Improving quantitative volumetric analysis skills in first year university chemistry courses
Research in Science Education, 1993This paper describes a project in the School of Chemistry at The University of Melbourne. During 1992 thirty hours of videotapes were taken of students doing quantitative volumetric work in first year laboratories. These were viewed to find out what problems students encountered and what interactions they had with other students and with demonstrators.
Carmel McNaught +5 more
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A chemistry course including both qualitative and quantitative analysis
Journal of Chemical Education, 1955Describes a chemistry course and its experiments that incorporates both qualitative and quantitative analysis.
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ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Wenbao Li, Bing Yan
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Wenbao Li, Bing Yan
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Talanta, 1970
The applications of n.m.r. to the quantitative analysis of pharmaceutical formulations and products of interest to the pharmacist and pharmaceutical analyst are reviewed. Special attention is paid to the accuracy of the method, the coefficients of variation being quoted (or calculated from data in the original paper) where possible.
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The applications of n.m.r. to the quantitative analysis of pharmaceutical formulations and products of interest to the pharmacist and pharmaceutical analyst are reviewed. Special attention is paid to the accuracy of the method, the coefficients of variation being quoted (or calculated from data in the original paper) where possible.
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Journal of Chemical Education, 1975
Interactive computer programs that permit students students to check their calculations while still in the laboratory.
L. H. Berka +2 more
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Interactive computer programs that permit students students to check their calculations while still in the laboratory.
L. H. Berka +2 more
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Journal of Research in Science Teaching, 2003
AbstractThere is a consensus regarding the fact that students encounter difficulties in understanding scientific concepts, such as the particulate nature of matter, the mole, and the interpretation of chemical symbols. Researchers and practitioners have been looking for teaching methods to improve students' understanding of quantitative chemistry and ...
Yehudit J. Dori, Mira Hameiri
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AbstractThere is a consensus regarding the fact that students encounter difficulties in understanding scientific concepts, such as the particulate nature of matter, the mole, and the interpretation of chemical symbols. Researchers and practitioners have been looking for teaching methods to improve students' understanding of quantitative chemistry and ...
Yehudit J. Dori, Mira Hameiri
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Journal of Proteome Research, 2016
Quantitative secretome analyses are a high-performance tool for the discovery of physiological and pathophysiological changes in cellular processes. However, serum supplements in cell culture media limit secretome analyses, but serum depletion often leads to cell starvation and consequently biased results.
Kathrin E, Witzke +9 more
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Quantitative secretome analyses are a high-performance tool for the discovery of physiological and pathophysiological changes in cellular processes. However, serum supplements in cell culture media limit secretome analyses, but serum depletion often leads to cell starvation and consequently biased results.
Kathrin E, Witzke +9 more
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Quantitative Phase Analysis By Linear Regression of Chemistry on X-Ray Diffraction Intensity
Powder Diffraction, 1987AbstractXRF and XRD measurements made on a single pressed powder briquet can be combined to give more quantitative information than either technique employed alone. Speed of analysis and simplification of sample preparation are also enhanced. The algorithm presented here uses multiple linear regression of the concentrations of one or more elements on ...
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