Results 251 to 260 of about 2,455,756 (304)

Random Models and Analyses for Chemical Graphs

International Journal of Foundations of Computer Science, 2015
This paper describes a random model for chemical graphs that captures the notion of valence along with algorithms to generate chemical graphs using this model. An approach for computing the probability that a particular chemical graph is generated under this model is provided.
Tina M. Kouri, Daniel Pascua, Dinesh P. Mehta   +2 more
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Some aspects of the reliability of chemical analyses

Analytical Biochemistry, 1968
Abstract The reliability of a chemical analytical method is a composite property of the method. This composite property may be resolved into four more elementary properties which may be designated as (1) specificity, (2) accuracy, (3) precision, and (4) sensitivity.
P A, Anastassiadis, R H, Common
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Chemical structure analyses of phosphorylated chitosan

Carbohydrate Research, 2014
Chemical modification of chitosan to generate new bio-functional materials can bring more desirable properties depending on the nature of the groups introduced. Phosphorylated chitosan has attracted interests in recent years. The literature has reported that the phosphorylation of chitosan could be achieved through three different reaction routes ...
Kaipeng, Wang, Qi, Liu
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Chemical Analyses of Rocks

Nature, 1960
Petrochemische Berechnungsmethoden auf Aquivalenter Grundlage Von Prof. Conrad Burri. (Methoden von Paul Niggli.) (Lehrbucher und Monographien aus dem Gebiete der Exakten Wissenschaften. Mineralogisch-Geotechnische Reihe, Band 7.) Pp. 334. (Basel und Stuttgart: Birkhauser Verlag, 1959.) 38 Swiss francs; 38 D.M.
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Analyses of Chemical Bonds

1980
The analysis of a system composed of two or more interacting subsystems is often pursued, in ab initio studies, by taking as hamiltonian the same hamiltonian used for atomic systems but with the inclusion of more than one nucleus; the nuclei are kept at fixed positions as is done in atomic computations (Born-Oppenheimer approximation). Thus, the system
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Towards unified analyses in chemical pathology

Pathology, 1978
The use of different units, methods and instruments in chemical pathology has produced a situation in which different laboratories may produce numerically different results for the same analysis. The more complete use of SI, the introduction to Australia of reference methods and the production in Australia of a pool of reference material will reduce ...
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Chemical Analyses for Agriculture

2019
Chemical analyses play an important role in agriculture, as supporting technologies at all stages of agro-industrial chains as grains, forests, pulp and paper, waste and agricultural residues, among other sources of agricultural products. Furthermore, chemical analyses give the knowledge of chemical composition and the presence or absence of ...
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Chemical analyses of mycobacterial cell walls

Biochimica et Biophysica Acta (BBA) - General Subjects, 1968
1. 1. Mycobacterium tubercolosis, BCG, Mycobacterium smegmatis, Mycobacterium sp. strain Rabinowitch, and Mycobacterium sp. strain 521, defatted by ethanol-ether and chloroform were treated with phenol and trypsin. The residual fractions contained 35–40% of species-specific mycolic acid, 33–40% of neutral sugars, 7–8% of amino sugars and 12–18% of ...
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On the Chemical Analyses of the Rocks

Quarterly Journal of the Geological Society of London, 1875
At the request of Mr. Hicks I made several analyses of Cambrian rocks, principally with the view of determining the amount of phosphoric acid in each; but incidentally, in one or two cases, an analysis, more or less complete, has been made of the specimen of rock itself. No. I. is a darkish grey flaggy rock, with an impression of
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Automated wet chemical analysers and their applications

Talanta, 1973
A review is presented of automated analysis, including instrumentation and applications.
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