Now showing items 31-40 of 73
Use of salicylic acid to measure the apparent intracellular pH in the ehrlich ascites-tumor cell and Escherichia coli
(Elsevier, 1978-05-04)
The distribution of salicylic acid between the intracellular and extracellular phases has been used to estimate the intracellular pH in the Ehrlich cell and Escherichia coli. The validity of the method was established by: ...
Heat capacity and thermodynamic properties of strontium from 5 to 350 K
(Elsevier, 1978-01)
The heat capacity of pure strontium metal was measured by adiabatic-shield calorimetry from 5 to 350 K. At 298.15 K values of the thermodynamic functions are found to be: Cp/calth K-1 mol-1 = 6.402, So/calth K-1 mol-1 = ...
Equilibrium dialysis and carborydrate-binding studies on the 2-acetamido-2-deoxy--glucopyranosyl-binding lectin from bandeiraea simplicifolia seeds
(Elsevier, 1978-03)
The carbohydrate-binding specificity of Bandeiraea simplicifolia lectin II (BS II lectin) has been studied by quantitative precipitin and hapten-inhibition analysis. The BS II lectin precipitated biopolymers having nonreducing ...
Heat capacity and thermodynamic properties of CrSb2 from 5 to 1050 K. Magnetic transition and enthalpy of decomposition
(Elsevier, 1978-02)
The heat capacity of CrSb2 has been measured by adiabatic calorimetry from 5 to 991.3 K. At the latter temperature the CrSb2-phase decomposes into the CrSb-phase and an antimonyrich melt. The heat capacity of the two-phase ...
Detection of aldolase activity on polyacrylamide gels: Application to 2-keto-4-hydroxyglutarate aldolase
(Elsevier, 1978-06-15)
A method is described for the detection of 2-keto-4-hydroxyglutarate aldolase activity after electrophoresis of the enzyme on polyacrylamide gels. When gels are incubated with substrate (2-keto-4-hydroxyglutarate), activity ...
Arginine methyltransferase activity in chronic erythremic myelosis (Diguglielmo syndrome)
(Elsevier, 1978-06-09)
Activity of S-adenosylmethionine-dependent arginine methyltransferase was substantially higher in sonicated bone marrow samples from 6 patients with chronic erythremic myelosis than in bone marrow from 3 patients with ...
Actinoid pnictides--II : Heat capacities of UAs2 and USb2 from 5 to 750 K and antiferromagnetic transitions
(Elsevier, 1978)
The heat capacities of uranium diarsenide (UAs2) and uranium diantimonide (USb2), with tetragonal structures of the anti-Cu2Sb-type, have been measured by adiabatic-shield calorimetry from 5 to about 750 K. Lambda-type ...
Effects of cyclic adenosine 3': 5'-monophosphate on phosphoprotein kinase and phosphatase fractions prepared from rat liver nuclei
(Elsevier, 1978-12)
A soluble rat liver nuclear extract containing total RNA polymerase activities also exhibits appreciable amounts of protein kinase activity. This unfractionated protein kinase catalyzes the phosphorylation of both endogenous ...
Oxygen requirement for prostaglandin biosynthesis
(Elsevier, 1978-08)
The formation of prostaglandins by vesicular gland cyclooxygenase can be regulated by O2 concentrations below 30 [mu] (20 mm Hg) with an apparent Km value of about 5 [mu]M. This result suggests that most mammalian tissues ...
Electrochemical reduction of uracil in dimethyl sulfoxide : Autoprotonation of the anion radical
(Elsevier, 1978-12-11)
The electrochemical reduction of uracil in dimethyl sulfoxide was investigated, using d.c. and a.c. polarography, cyclic voltammetry, and controlled potential electrolysis. Uracil is reduced in a one-electron step (E1/2 = ...