Now showing items 61-70 of 387
Studies on the synthesis and structure of cordycepin monophosphate
(Elsevier, 1963)
Cordycepin monophosphate has been synthesized by two methods. One of these was chemical and involved treatment of cordycepin with cyanoethyl phosphate in the presence of N,N'-dicyclohexylcarbodiimide with subsequent alkaline ...
The action of trypsin and neuraminidase on the synaptic membranes of brain cortex
(Elsevier, 1969-03-11)
The population of intracellular membranes of rat cerebral cortex which exhibited the highest relative specific concentration of bound N-acetylneuraminic acid (NANA) and the highest relative specific activity of ...
Thermal neutron-activation analysis of titanium using 5[middle dot]8-minute titanium-51 and rapid radiochemical separations
(Elsevier, 1963-01)
A nuclear reactor has been used to determine trace amounts of titanium by neutron-activation analysis in a variety of samples. A 10-min radiochemical separation procedure coupled with gamma-ray spectrometry permitted ...
Physicochemical and immunochemical studies on the reaction of bovine serum albumin with p,p'-difluoro-m,m'-dinitrodiphenylsulfone
(Elsevier, 1963-02)
Bovine serum albumin (BSA) was reacted with the bifunctional reagent p,p'-difluoro-m,m'-dinitrodiphenylsulfone (FNPS) under varying conditions. While intramolecular cross linkages involving the lysine and tyrosine residues ...
Mixing device for generating simple chromatographic gradients
(Elsevier, 1965-10)
A linear gradient device consisting of two concentric reservoirs of equal cross-sectional area, in which the initial and limiting eluent solutions are maintained in hydrostatic equilibrium, may be constructed from several ...
Determination of rhodium by thermal neutron activation analysis using g-ray spectrometry
(Elsevier, 1962)
Trace amounts of rhodium have been determined by thermal neutron activation analysis using both destructive and non-destructive methods. With a neutron flux of 1012 n cm-2 sec-1 the lower limits of detection are about 0.1 ...
Carbamyl phosphate synthesis in Nuerospora crassa I. Preliminary characterization of arginine-specific carbamyl phosphokinase
(Elsevier, 1965-08-24)
An enzyme from Neurospora crassa which catalyzes carbamyl phosphate formation is reported. Carbamyl phosphate formation by the enzyme is hown to be dependent upon ATP, ammonia, bicarbonate, and magnesium ions. Glutamine ...
The steady-state relaxation time and the product at equilibrium
(Elsevier, 1967-07-11)
1. 1. According to and his co-workers, the steady-state relaxation time (i.e. the reciprocal of the first-order process by which an enzyme reaction reaches equilibrium) determines, in part, the apparent metabolic flow ...