Results 201 to 210 of about 2,501,315 (276)
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Computer enhancements of general chemistry and quantitative analysis laboratories
Journal of Chemical Education, 1978The authors have initiated a computer enhancement program in two of their undergraduate chemistry laboratory courses. The student response has been favorable.
Harvey B. Herman, J. A. Dilts
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Introducing Field Environmental–Analytical Chemistry in the Quantitative Analysis Laboratory
The Chemical Educator, 2001Advances in instrumentation and technology now provide the ability to perform many quantitative determinations in the field. Additionally, the potential for sample degradation and analyte decomposition make it necessary to determine certain analytes (e.g., dissolved oxygen) in the field when conducting environmental analyses.
John C. Schaumloffel +1 more
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Analytical Chemistry, 2018
The use of plastic materials in daily life, industry, and agriculture can cause soil pollution with plastic fragments down to the micrometer scale, i.e., microplastics. Quantitative assessment of microplastics in soil has been limited so far.
J. David +3 more
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The use of plastic materials in daily life, industry, and agriculture can cause soil pollution with plastic fragments down to the micrometer scale, i.e., microplastics. Quantitative assessment of microplastics in soil has been limited so far.
J. David +3 more
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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.
Joseph A. Gardella, Cara L. Weitzsacker
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A universal method for quantitative analysis of triboelectric nanogenerators
Journal of Materials Chemistry A, 2019A universal method is built for all kinds of TENGs, which can give quantitative analysis formulae.
Xiaoyi Li +3 more
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Quantitative analysis of sarcosine with special emphasis on biosensors: a review
Biomarkers, 2019The quantitative determination of sarcosine is of great importance in clinical chemistry, food and fermentation industries. Elevated sarcosine levels are associated with Alzheimer, dementia, prostate cancer, colorectal cancer, stomach cancer and ...
C. Pundir, Ritu Deswal, Parveen Kumar
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Quantitative analysis versus quantitative chemistry
Journal of Chemical Education, 1960Examines the historical development of quantitative analysis and quantitative chemistry and their contemporary role in the undergraduate curriculum.
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Combining Pulsed SILAC Labeling and Click-Chemistry for Quantitative Secretome Analysis
2014Secreted proteins, such as cytokines, chemokines, and hormones, exhibit central functions in intercellular communication, which is crucial to maintain homeostasis in every multicellular organism. A common approach to identify secreted proteins is by proteomic analysis of culture media after conditioning with a cell type of interest.
Katrin Eichelbaum, Jeroen Krijgsveld
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Nature Methods, 2005
We present a robust and general method for the identification and relative quantification of phosphorylation sites in complex protein mixtures. It is based on a new chemical derivatization strategy using a dendrimer as a soluble polymer support and tandem mass spectrometry (MS/MS).
W. Andy Tao +10 more
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We present a robust and general method for the identification and relative quantification of phosphorylation sites in complex protein mixtures. It is based on a new chemical derivatization strategy using a dendrimer as a soluble polymer support and tandem mass spectrometry (MS/MS).
W. Andy Tao +10 more
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International Journal of Science Education, 1998
The mole, a fundamental concept in quantitative chemistry, poses understanding difficulties for many students. To tackle this problem we have developed a multidimensional problem analysis, classification and authoring method. We define three dimensions, each being a transformation from the symbol to the macro, micro and process understanding levels ...
Yehudit Judy Dori, Mira Hameiri
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The mole, a fundamental concept in quantitative chemistry, poses understanding difficulties for many students. To tackle this problem we have developed a multidimensional problem analysis, classification and authoring method. We define three dimensions, each being a transformation from the symbol to the macro, micro and process understanding levels ...
Yehudit Judy Dori, Mira Hameiri
openaire +2 more sources