Now showing items 21-30 of 48
Stereospecificity of the transport of tert.-leucine
(Elsevier, 1963-10-08)
1. 1. Carboxyl-labeled ter.-leucine (pseudoleucine) has been synthesized by the reaction of pivaldehyde with K14CN, and the stereoisomers separated.2. 2. About 3% of the radioactive carbon injected into the rat in the form ...
Spectrophotometric studies of lower oxidation states of technetium
(Elsevier, 1963-11)
The spectrophotometric behaviour of lower oxidation states oftechnetium, obtained by reducing pertechnetate under different conditions by various methods, has been examined. Contrary to some of the previously advanced ...
Inhibition of protein synthesis in cell-free systems by homocitrullylamino adenosine
(Elsevier, 1963)
Homocitrullylamino adenosine inhibits the incorporation of [14C]amino acids into a hot acid-insoluble form in cell-free systems derived from Escherichia coli and rat liver. The concentration necessary for one-half maximal ...
Rapid activation analysis of trace vanadium in tissue using 3.8-minute vanadium-52
(Elsevier, 1963)
Submicrogram amounts of vanadium in rat liver tissue have been analyzed by rapid activation analysis. A 5-min radiochemical separation coupled with [gamma]-ray spectrometry permitted utilization of the 3.8-min vanadium-52 ...
Glutamine synthetase : II. The intracellular localization in the rat liver
(Elsevier, 1963)
The intracellular distribution of glutamine synthetase (-glutamate: ammonia ligase (ADP), EC 6.3.1.2) in normal and regenerating rat livers has been studied. The distribution of the enzyme activity in liver in these two ...
Determination of semimicro amounts of tellurium by electrodeposition
(Elsevier, 1963)
Electrodeposition of tellurium in micro or semimicro amounts can be achieved using copper or copper-plated platinum cathodes. Best results are obtained from electrolytic baths of approximately 2 M sulfuric acid, 0.4 M ...
The incorporation of citrate carbon into fatty acids
(Elsevier, 1963)
Long-chain fatty acids are synthesized from citrate in an undialyzed soluble enzyme system from pigeon liver at a rate comparable to that observed when acetate is used as a precursor. The first enzymic step for citrate ...
Radiant heat transfer in packed beds
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1963-01)
The effective scattering and absorption cross sections were determined from measurements of radiant transmission through isothermal beds of glass, aluminum oxide, steel and silicon carbide spheres, cylinders, and irregular ...