Now showing items 11-20 of 92
CO oxidation of Pt/Al2O3 and Pd/ Al2O3 transient response and concentration cycling studies
(Elsevier, 1986)
By combining transient response experiments with forced concentration cycling, we were able to determine the reactive surface intermediates responsible for the large rate enhancements observed during periodic operation. ...
Guanine nucleotides reduce the free calcium requirement for secretion of granule constituents from permeabilized human neutrophils
(Elsevier, 1986-11-28)
Human neutrophils can be permeabilized with the cholesterol complexing agent digitonin and then induced to secrete lysosomal constituents by increases in free Ca2+ alone. In order of increasing requirements for Ca2+, vitamin ...
The preferential release of beta-endorphin from the anterior pituitary lobe by Corticotropin Releasing Factor (CRF)
(Elsevier, 1986)
Although a number of investigators have shown that release of ACTH is accompanied by the release of Beta-endorphin ([beta]-End) and Beta-lipotropin ([beta]-LPH), the proportion of the latter two peptides released with ...
Thermophysics of metal alkanoates VI. Heat capacities and thermodynamic properties of lithium n-pentanoate and n-heptanoate
(Elsevier, 1986-12)
The adiabatic calorimetric study (at 5 to 350 K) of lithium n-pentanoate and n-heptanoate proved that solid-state transitions occur at Ttrs/K = 209.31 and 319.06 in the former salt, and at Ttrs/K = 317.08 in the latter ...
Muscarinic receptor-stimulated Ca2+ signaling and inositol lipid metabolism in avian salt gland cells
(Elsevier, 1986-11-28)
Activation of muscarinic cholinergic receptors was studied by measuring agonist-stimulated inositol lipid turnover and changes in [Ca2+]i in dissociated salt gland secretory cells. Carbachol stimulation of quin2-loaded ...
Isoelectric focusing of proteins in rewetted ultrathin polyacrylamide gel layers
(Elsevier, 1986-12)
Ultrathin layers of polyacrylamide gel bound to glass can be washed, air-dried, and stored for at least 1 year before rewetting in ampholyte solutions for isoelectric focusing. Short-term drying affects neither fluorescent ...
The activity and properties of an acidic triacylglycerol lipase from adult and fetal rat lung
(Elsevier, 1986-01-03)
Triacylglycerol lipase with maximal activity at pH 5 was present in adult and fetal lung. The activity was inhibited by serum concentrations used to measure lipoprotein lipase and by 0.5 M NaCl. The activity in homogenates ...
Determination of plasma trimetrexate levels using gas chromatography--mass spectrometry with selected-ion monitoring
(Elsevier, 1986)
Trimetrexate is a potent inhibitor of dihydrofolate reductase and has demonstrated significant antitumor activity against murine and human cell lines both in vitro and against several murine transplanted tumors. The ...
Co oxidation on Pd/Al2O3. Transient response and rate enhancement through forced concentration cycling
(Elsevier, 1986)
Catalytic oxidation of CO over Pd/Al2O3 was studied with a novel monolithic reactor, with inside the reactor detection of reactants and products. Periodic switching of the feed between CO/N2 and O2/N2 resulted in time-averaged ...
Evidence that isoniazid and ethanol induce the same microsomal cytochrome P-450 in rat liver, an isozyme homologous to rabbit liver cytochrome P-450 isozyme 3a
(Elsevier, 1986-05-01)
Cytochrome P-450j has been purified to electrophoretic homogeneity from hepatic microsomes of adult male rats administered ethanol and compared to the corresponding enzyme from isoniazid-treated rats. The enzymes isolated ...