Now showing items 61-70 of 634
Thermodynamics of the lanthanide halides I. Heat capacities and Schottky anomalies of LaCl3, PrCl3, and NdCl3 from 5 to 350 K
(Elsevier, 1976-12)
The heat capacities of LaCl3, PrCl3, and NdCl3 have been measured from 5 to 350 K by adiabatic calorimetry. No co-operative thermal anomalies were seen in the temperature range investigated but substantial magnetic ...
Stimulation by prostaglandin E2 of glucagon and insulin release from isolated rat pancreas
(Elsevier, 1975-09)
To ascertain whether prostaglandins (PG) may play a role in the secretion of glucagon and in an attempt to elucidate the conflicting observations on the effects of PG on insulin release, the isolated intact rat pancreas ...
The inhibitive effects of steroid analogues in the binding of tritiated 5[alpha]-dihydrotecto3terone to receptor proteins from rat prostate tissue
(Elsevier, 1975-02)
The relationship between molecular structure and the binding potential of steroids to receptor proteins was investigated. Twenty-four selected steroids were studied in minced incubations of rat pro state tissue. Measurements ...
D-Glucuronic acid: A non-inhibitor of the concanavalin A system
(Elsevier, 1972-06-22)
D-Glucuronic acid is demonstrated not to inhibit the concanavalin A system; previous claims to the contrary are shown to be due to a pH effect. Concanavalin A does not precipitate biopolymers containing nonreducing, terminal ...
Fluorescein isothiocyanates: Improved synthesis and purity : Spectral studies
(Elsevier, 1974-01)
Modification of the methods of synthesis by direct reaction of the isomeric aminofluoresceins with a limited excess of thiophosgene in the presence of calcium carbonate has yielded the 5- and 6-isothiocyanatofluoresceins ...
Simple procedures for the rapid cleavage of ester lipids and for the large-scale isolation from brain of cerebroside sulfate
(Elsevier, 1979-12)
The ester groups of glycerophospholipids in tissue extracts can be cleaved in less than 10 min at room temperature if the lipids are extracted with hexane-isopropanol and the filtrate is treated with methanolic NaOH. The ...
Properties of a partially-purified preparation of the prostaglandin-forming oxygenase from sheep vesicular gland
(Elsevier, 1975-11)
The fatty acid oxygenase of sheep vesicular glands was solubilized with Tween-40 and purified 60-fold using ammonium sulfate precipitation and DEAE-cellulose chromatography. Glycerol (50%) stabilized the activity at all ...
Joining of simian virus 40 DNA molecules at endonuclease R Eco RI sites by polynucleotide ligase and analysis of the products by agarose gel electrophoresis
(Elsevier, 1976-07-02)
DNA molecules cut with endonuclease R Eco RI can be joined at Eco RI cleavage sites by incubation with polynucleotide ligase. In order to define the optimum conditions for this reaction, linear Simian Virus 40 DNA molecules ...
Tritium exchange reactions catalyzed by 2-oxo-4-hydroxyglutarate aldolase from Escherichia coli K-12
(Elsevier, 1979-05-10)
Tritiated water and tritiated substrates have been used to study exchange reactions catalyzed by Escherichia coli 2-oxo-4-hydroxyglutarate aldolase (4-hydroxy-2-oxoglutarate glyoxylate-lyase, EC 4.1.3.16, 2-oxo-4-hydroxyglutarate ...
Influence of bovine diabetogenic peptide, growth hormone, and prolactin on tissue glycogen, liver fat, and liver water of fasting rats
(Elsevier, 1971-06)
1. 1. Bovine diabetogenic peptide, growth hormone, and prolactin were compared with respect to their effects on tissue glycogen, liver fat, and liver water in fasting rats.2. 2. Bovine diabetogenic peptide increases liver ...