Now showing items 1-10 of 40
A polarographic method for following the rates of cholinesterase-catalyzed hydrolyses of acetylthiocholine
(Elsevier, 1965-08)
A rapid and simple polarographic method for following the rates of the cholinesterase-catalyzed hydrolysis of acetylthiocholine and the rates of inhibition of this hydrolysis is described. This method has the advantage ...
Conversion of dehydroepiandrosterone sulfate to androst-5-enediol-3-sulfate by soluble extracts of rat testis
(Elsevier, 1965-09)
3H-Androst-5-ene-17-one-3[beta]-y1 sulfate is converted to 3H-androst-5-ene-17[beta]-o1-3[beta]-y1 sulfate by soluble extracts of rat testis in the presence of added NADH2 or NADPH2.The conversion was approximately 4 times ...
Unsteady state gas-liquid slug flow through vertical pipe
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1965-07)
Macroscopic mass and momentum balances have been used to predict the unsteady behavior of gas-liquid slug flow through vertical pipe. Equations have been developed to predict the time-dependent pressure drop along the pipe ...
Effect of chloride lons on the reaction of diphenylamine with DNA
(Elsevier, 1965-08)
The sensitivity of the Dische test (diphenylamine) for DNA is reduced by the presence of chloride ions, which cause formation of a new reaction product whose absorption maximum is at lower wavelength, and also a reduction ...
Hydrogenation of testosterone sulfate by the [Delta]4-3-ketosteroid reductase of rat liver microsomes
(Elsevier, 1965-01)
TPNH2 is oxidized in the presence of testosterone or testosterone sulfate and a microsomal preparation from the liver of female rats. In the presence of iorganic phosphate, DPNH2 also acts as a hydrogen donor. Evidence is ...
Protein-carbohydrate interaction : III. Agar gel-diffusion studies on the interaction of concanavalin A, a lectin isolated from jack bean, with polysaccharides
(Elsevier, 1965-08)
Concanavalin A, a protein isolated from the jack bean (Canavalia ensiformis), has previously been shown to form a precipitate with glycogen and yeast mannan, and more recently with dextrans and amylopectin. Double-diffusion ...
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 ...
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 ...
Heteroaromatic polymers. The polybithiazoles Presented in part at the Symposium on Novel Polymer Structures, 145th National Meeting, American Chemical Society, New York, September 1963. 1
(John Wiley & Sons, Inc., 1965-09)
The polycondensation of dithioÖxamide with bifunctional aromatic bromomethyl ketones affords a series of poly-4,4′-diaryl-2,2′-bithiazoles. These polymers exhibit outstanding thermal stability. They are characteristically ...