منابع مشابه
Quantitative NMR spectroscopy using coaxial inserts containing a reference standard: purity determinations for military nerve agents.
A novel 31P NMR method for the determination of purity for the military nerve agents sarin, soman, and VX has been developed. In contrast to more conventional quantitative NMR methods, stem coaxial inserts are placed into the sample tube to introduce reference material into the analysis without mixing or reaction with the analyte. All sample preparation is eliminated, and the analysis is comple...
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In the course of studies by Keilin and Hartree (1) on succinic oxidase preparation of heart muscle particles, it was observed that the kinetics of reduction of cytochrome b were not in accord with some rather fundamental criteria that must be met for an electron-transferring component in the respiratory chain (2). On the other hand, studies of the kinetics of cytochrome b in intact yeast cells ...
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The extraction of pectins from sugar beet pulp was carried out in an aqueous acid medium under different conditions using a full twostate experimental design for three extraction parameters (pH, temperature and time). The yields of the extracted pectins ranged from 4.1% to 16.2%. Their contents in pectin constituents were 35.2–76.3% galacturonic acid, 6.8–32.9% neutral sugars, 2.0–4.2% methoxy ...
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I review attempts made to determine the properties of neutron stars. The focus is on the maximum mass that a neutron star can have, or, conversely, the minimum mass required for the formation of a black hole. There appears to be only one neutron star for which there is strong evidence that its mass is above the canonical 1.4M⊙, viz., Vela X-1, for which a mass close to 1.9M⊙ is found. Prospects...
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In this paper we suggest determinations as a representation of knowledge that should be easy to understand. We brieey review determinations, which can be displayed in a tabular format, and their use in prediction , which involves a simple matching process. We describe ConDet, an algorithm that uses feature selection to construct determinations from training data, augmented by a condensation pro...
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ژورنال
عنوان ژورنال: Journal of Industrial & Engineering Chemistry
سال: 1922
ISSN: 0095-9014,1943-2968
DOI: 10.1021/ie50154a030