Now showing items 21-30 of 321
A game to help students comprehend enzyme structure and mechanism of action
(Elsevier, 1976-01)
Synthesis of [4.2]cyclophanes
(Elsevier, 1978)
Vinyl -xylylene cross-dimerizes with other xylylene-type intermediates to yield cycloadducts of the [8+6] and [6+6] type. This reaction provides a simple entry to the [4.2]paracyclophane system as well as the analogous ...
Determination of iodoamino acids and inorganic lodide by thin-layer chromatography
(Elsevier, 1970-10)
A method has been presented for the separation of monoiodotyrosine diiodotyrosine, diiodothyronine, triiodothyronine, thyroxine, and inorganic iodide from one another by thin-layer chromatography on silica gel. The solvent ...
Heat capacity of Th(NO3)4[middle dot]5H2O from 5 to 350 K
(Elsevier, 1976-01)
The heat capacity of crystalline Th(NO3)4[middle dot]5H2O has been determined by adiabatic calorimetry primarily to enable evaluation of the standard partial molar entropy and heat capacity of aqueous thorium(IV) ion. No ...
The economic impact of methane generation on dairy farms. A micro-analytic model
(Elsevier, 1978-10)
The object of this paper is to perform an analysis of the economic efficiency of methane generation on a typical 65-cow dairy farm, juxtaposed against prices and costs of auxiliary energy supplied by rural electrification. ...
Characterization of trace metal species and measurement of trace metal stability constants by electrochemical techniques
(Elsevier, 1975-11)
Differential pulse polarography and differential pulse anodic stripping voltammetry were used to determine copper, lead, cadmium and zinc complexes of relevance to environmental conditions. The dependency of peak current ...
Structural studies of capsular polysaccharide of type XII diplococcus pneumoniae
(Elsevier, 1974-10)
The capsular polysaccharide of Diplococcus pneumoniae Type XII contains residues of -glucose and -galactose in a molar ratio of 2:1. The methylated polysaccharide yielded upon hydrolysis 2,3,4,6-tetra- and 3,4,6-tri-O-me ...
Aspirin as a quantitative acetylating reagent for the fatty acid oxygenase that forms prostaglandins
(Elsevier, 1976-01)
A selective acetylation of the prostaglandin-forming fatty acid oxygenase (part of the prostaglandin "synthetase" system) occurs with 100 [mu]M concentrations of aspirin (acetylsalicylic acid). The amount of acetylation, ...