Now showing items 31-40 of 85
Electron correlation and Hund's rule
(John Wiley & Sons, Inc., 1980-10)
It is suggested that simple electronic shielding effects induced by wave function antisymmetrization tend to govern the energy ordering of singlet and triplet terms within a two-electron atomic configuration. This approach ...
Effect of pH on metabolism of the glutamine carbon skeleton by renal cortical mitochondria
(Elsevier, 1980)
1. 1. To determine the effect of altered acid-base homeostasis on the intramitochondrial metabolism of the glutamine carbon skeleton 14CO2 production from [U-14C]glutamine by isolated rat renal cortical mitochondria was ...
Structure of tri-tert-butylsilane by electron diffraction and molecular mechanics
(Elsevier, 1980-04)
A model force field for silanes is constructed by extending the model field MUB-2 to include silicon, for the following purposes: the calculation, via normal coordinate analyses, of amplitudes of vibration and shrinkage ...
The reaction of chlorotetrafluorophosphorane with trimethylamine
(Elsevier, 1980)
The reaction of chlorotetrafluorophosphorane with trimethylamine affords a 1:1 Lewis acid-base complex of composition ClF4P[middle dot]NMe3. It has been established by 1H and 19F NMR spectroscopy that the Cl and Me3N ligands ...
Interpretation of dynamic scattering from polymer solutions
(Elsevier, 1980-08)
The theoretical results available for the interpretation of the dynamic scattering from polymer solutions have been re-examined. The scattering law S(q, t) is formulated using the eigenfunction expansion method and the ...
Mechanism of cholesterol gallstone dissolution. I. The determination of the binding of alkyl amines to bile micelles using dynamic membrane transport methods
(Elsevier, 1980-03)
Recent studies have shown that cholesterol monohydrate pellet dissolution rates in real and synthetic bile systems are enhanced dramatically in the presence of small concentrations of amines (primary, secondary, and ...
Synthesis of potential antiprogestins II
(Elsevier, 1980-05)
Alkylated derivatives of 17-acetoxyprogesterone were prepared in order to test the hypothesis that bulky groups in certain positions of the steroid molecule have the effect of transforming progestogens into antiprogestogens. ...
Aldosterone receptor assay in rat kidney cytosol
(Elsevier, 1980-07)
A method has been developed to measure aldosterone receptors using rat kidney cytosol preparations. Addition of 0.1 M Na molybdate to homogenization buffer markedly diminished receptor inactivation, allowing for more ...
The novel synthesis of a [6:5:6] linear isoguanosine type tricyclic nucleoside using carbonyl sulfide
(Elsevier, 1980)
The novel one-step synthesis of a fused pyrimidin-2-one-4-thione derivative from an -aminonitrile using carbonyl sulfide is described.
Polychlorinated biphenyls as inducers of hepatic microsomal enzymes: Structure-activity rules
(Elsevier, 1980-06)
A number of highly purified polychlorinated biphenyl (PCB) isomers and congeners were synthesized and administered to male Wistar rats at dosage levels of 30 and 150 [mu]mol [middle dot] kg-1. The effects of this in vivo ...