Now showing items 81-90 of 483
Characterization of a transport system for anionic amino acids in human fibroblast lysosomes
(Elsevier, 1989-12-28)
-Aspartate and -glutamate are transported into human fibroblast lysosomes by a single, low Km, Na+-independent transport system, which has been provisionally named lysosomal system d. This system resembles the Na+-dependent ...
Purification, properties, and oxygen reactivity of p-hydroxybenzoate hydroxylase from Pseudomonas aeruginosa
(Elsevier, 1989-12-21)
The monooxygenase, p-hydroxybenzoate hydroxylase (4-hydroxybenzoate, NADPH: oxygen oxidoreductase (3-hydroxylating), EC 1.14.13.2) has been isolated and purified from Pseudomonas aeruginosa. The reaction catalysed is linked ...
Chemical characterization of biodegradative threonine dehydratases from two enteric bacteria
(Elsevier, 1982-08-23)
Some chemical properties of the purified biodegredative threonine dehydratases (-threonine hydro-lyase (deaminating), EC 4.2.1.16) from Escherichia coli and Salmonella typhimurium are described. The overall amino acid ...
Observation of coupled quasi-two-dimensional electronic excitations in tilted magnetic fields
(Elsevier, 1988)
We report on a magneto-Raman scattering investigation of free and donor-bound electrons in GaAs/AlxGa1-xAs quantum wells. For fields perpendicular to the layers, the spectra show intersubband transitions of photoexcited ...
On Green's functions, propagators, and sturmians for the nonrelativistic coulomb problem
(John Wiley & Sons, Inc., 1984-03-01)
Recent progress in the mathematical physics and quantum chemistry of Coulomb Green's functions is summarized. Analogy with the defining relation for the Green's function has led to a finite model for the Fermi contact ...
Heat capacity and thermodynamic properties of ditungsten carbide, W2C1-x, from 10 to 1000 K
(Elsevier, 1988-06-30)
Thermodynamic properties of tungsten carbide, W2C0.833, have been derived from heat capacities measured by adiabatic calorimetry in the range 10-1000 K on a sample rich in this phase. The standard entropy of W2C0.833 was ...
An ab initio study of the structure and torsional modes of the H2SO4 molecule
(Elsevier, 1982-05)
Ab initio calculations at the STO--3G and 4--31G levels have been carried out for the H2SO4 molecule as a function of the pair of twist angles of the H---O bonds about the respective O---S bonds. Values for the remaining ...
Cholesterol monohydrate dissolution rate studies in aqueous micellar solutions of polyoxyethylene nonylphenol ether and ionic surfactants
(Elsevier, 1984-10)
The influences of electrical and other factors on the dissolution kinetics of cholesterol monohydrate in micellar solutions were quantified in terms of mass transfer resistances due to interfacial processes and ...
The reaction of the highly functionalized copper reagents RCu(CN)ZnI.BF3 with aldehydes
(Elsevier, 1988)
The new copper reagent RCu(CN)ZnI 2, which may contain important functional groups like the ester, nitrile, enoate or imide group, react in the presence of BF3.OEt2 with aldehydes to afford polyfunctional secondary alcohols ...