Now showing items 11-20 of 50
Tacticity determination of poly(methyl methacrylate) (PMMA) by high-resolution NMR
(John Wiley & Sons, Inc., 1982-10)
No Abstract.
Effect of Ca2+ on thermotropic properties of saturated phosphatidylcholine liposomes
(Elsevier, 1982-04-07)
The effect of various concentrations of calcium ion (Ca2+) on dipalmitoylphosphatidylcholine (DPPC), distearoylphosphatidylcholine (DSPC) and mixed DPPC/DSPC (1:1) liposomes was studied by differential scanning calorimetry. ...
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 ...
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 ...
Metal complex-catalyzed redistribution reactions of organosilanes : IV. Redistribution reactions of methylsiloxanes catalyzed by transition metal complexes
(Elsevier, 1982-10-19)
Redistribution reactions of a variety of hydrogen-substituted siloxanes are catalyzed by various transition metal complexes of iridium and rhodium. The products arise from breaking and remaking of Si---C, Si---H, and Si---O ...
Crystal structure of naturally occurring mercury(II) amidonitrate
(Elsevier, 1982-05)
A naturally-occurring mercuroammonium compound from Pitkin County, Colorado, is shown to be the natural analog of synthetic HgNH2NO3. The crystals are isometric, P4132 or P4332, with a = 10.254(1)A and twelve formula weights ...
A novel method for the synthesis of 6,7-unsubstituted pyrrolo[3,2-]pyrimidines
(Elsevier, 1982)
The synthesis of 2,4-dimethoxypyrrolo[3,2-]pyrimidine () is described. This facile, 3-step synthesis involves the bromination of 2,4-dimethoxy-6-methyl-5-nitropyrimidine (), and the subsequent conversion of compound into ...
Effects of anharmonicity of molecular vibrations on the diffraction of electrons : Part IV. "Anharmonic shrinkage"
(Elsevier, 1982-09)
Recent observations of anharmonic pseudo-shrinkages in polyatomic molecules greatly exceeding the genuine shrinkage due to vibrational foreshortening have forced a re-examination of anharmonically induced skewing of ...
Interpretation of micelle diffusion coefficients
(Elsevier, 1982-03)
The interpretation of micelle diffusion coefficients, especially those obtained by means of quasi-elastic light-scattering spectroscopy (QELSS), is discussed in light of theoretical work on macro-particle diffusion. The ...