Now showing items 51-60 of 73
Chemical reactivity of supported gold : IV. Reduction of NO by H2
(Elsevier, 1978-11)
The rates of reduction of NO by H2 and of H2---D2 equilibration were measured in a flow system on Au supported on SiO2, Al2O3, and MgO. For the NO reduction the temperature was 350 [deg]C, partial pressures were 1.52 [les] ...
Isotopic mixing in carbon monoxide catalyzed by zinc oxide
(Elsevier, 1978-08)
The rate of the isotopic mixing in CO has been studied at 300 [deg]C, for CO partial pressures from 6 to 100 Torr and a total pressure of 250 Torr on ZnO catalysts. Significant deviations from a first-order rate in pco ...
A rapid sensitive assay for phosphatidate phosphohydrolase
(Elsevier, 1978-06-15)
For a purified preparation of the soluble form of phosphatidate phosphohydrolase (EC 3.1.3.4) from guinea pig cerebral cortex, 1-O-alkyl-rac-glycerol 3-phosphate was found to be accepted as a substrate. This substrate ...
CrAs: heat capacity, enthalpy increments, thermodynamic properties from 5 to 1280 K, and transitions
(Elsevier, 1978-06)
The heat capacity of chromium arsenide has been measured by adiabatic calorimetry from 5 to 1050 K and enthalpy increments have been taken over the range 875 to 1280 K with respect to 298.15 K by drop calorimetry. The heat ...
Random coil dimensions of poly(diethyl siloxane)
(Elsevier, 1978-04)
A sample of high molecular weight poly(diethyl siloxane), [Si(C2H5)2---O---]x, (PDES) was separated into a series of fractions by means of liquid-liquid precipitations. Four of the fractions were studied by osmometry and ...
Dissociation of lutropin-induced loss of testicular lutropin receptors and lutropin-induced desensitization of testosterone synthesis
(Elsevier, 1978-05-03)
The relationship between changes in testicular lutropin receptors, as measured by specific binding of 125I-labeled human chorionic gonadotropin, and testosterone synthesis in response to lutropin (testicular responsiveness) ...
Critical concentrations for triplet exciton tunneling in binary naphthalene crystals: the case for percolation
(Elsevier, 1978-10-15)
Reduced concentration curves for triplet exciton transport are scaled by the critical concentrations in four distinct isotopic-mixed ternary systems. These systems with varying lifetimes, sensor concentrations and guest-host ...
Hypostoichiometric titanium diboride (TiB1.964) and hyperstoichiometric tantalum diboride (TaB2.11): the heat capacity and thermodynamic properties from 5 to 350 K
(Elsevier, 1978-07)
Heat capacities of TiB2 and TaB2.11 have been measured by adiabatic cryogenic calorimetry and found to have an essentially normal sigmate temperature dependence without thermal anomalies. Values at 298.15 K of the heat ...
Electronic energy transfer in mixed organic solids: Anderson localization or delocalization?
(Elsevier, 1978-10-15)
A simple Anderson transition model, ignoring guest clusterization, excitation lifetime, sensor concentration, exciton-phonon coupling and thermalization, appears to be incompatible with the critical concentrations observed ...
The Crystal and Molecular Structure of Bis(cyclopentadienyldicarbonylchromium) (Cr[triple bond]Cr)
(Elsevier, 1978-07-25)
The crystal structure of bis(cyclopentadienyldicarbonyl-chromium) has been determined by x-ray diffraction. The compound crystalizes in the triclinic system, space group P (C1i, No. 2) with unit cell parameters: a, 7.829(3); ...