Now showing items 31-40 of 81
Structural and kinetic studies in propene oxidation over Sb oxide dispersed on TiO2
(Elsevier, 1991-02)
Antimony oxide dispersed on TiO2 was characterized using FTIR, Raman, and Auger spectroscopies as well as XRD. They indicate that the electronic environment about Sb is perturbed at low concentration suggesting that the ...
Regulatory properties of AMP deaminases from rat tissues
(Elsevier, 1991)
1. 1. Phosphoeelluse column chromatography under double gradient conditions (phosphate and KC1) revealed two forms of AMP deaminase in rat heart and brain and a single form in the liver and skeletal muscle.2. 2. Kinetically ...
Hydrogen-induced CO displacement from the Pt(111) surface: an isothermal kinetic study
(Elsevier, 1991-11-02)
Chemisorbed CO can be completely removed from the Pt(111) surface in the temperature range 318 to 348 K for hydrogen pressures above 2 x 10-2 Torr. Thermal desorption of CO in this temperature range in the absence of ...
The interaction of nitrous oxide with cobalamin-dependent methionine synthase
(Elsevier, 1991-08)
Physical properties of a planar magnetron glow discharge
(Elsevier, 1991)
Continued work with a planar magnetron glow discharge plasma device which uses permanent magnets located behind a planar cathode to trap plasma electrons in circular orbits parallel to the cathode surface is described. ...
Microsomal CTP: choline phosphate cytidylyltransferase: kinetic mechanism of fatty acid stimulation
(Elsevier, 1991-10-15)
Fatty acids are known to cause an increase in the incorporation of radioactive choline into phosphatidylcholine. A coincident increase in membrane cytidylyltransferase activity is well documented. The purpose of the present ...
An investigation of Chromatium vinosum high-potential irondashsulfur protein by EPR and Mossbauer spectroscopy; evidence for a freezing-induced dimerization in NaCl solutions
(Elsevier, 1991-09-20)
The high-potential irondashsulfur protein (HiPIP) from Chromatium vinosum contains a cubane prosthetic group that shuttles between the [4Fe-4S]3+,2+ states. We find that the EPR spectra from this protein can be explained ...
Electrophysiological actions of VIP in rat somatosensory cortex
(Elsevier, 1991)
Electrophysiological and biochemical studies suggest that VIP may exert a facilitating action in the neocortical local circuitry. In the present study, we examined the actions of VIP and VIP + norepinephrine (NE) on ...
Secretagogue-induced Ca2+ oscillations in isolated canine gastric chief cells
(Elsevier, 1991-01-31)
Agonist-induced changes in cytoplasmic free Ca2+ concentration (|Ca2+|i) of isolated canine gastric chief cells were evaluated by microspectrofluorometry of superfused fura-2 loaded cells. Application of high concentrations ...