Now showing items 31-40 of 88
Indirect determination of thallium by differential-pulse polarography
(Elsevier, 1985-06)
The method is based on the separation ofTl(I) as Tl2HPMo12O40, stripping of the molybdate, and measurement of the peak current in differential-pulse polarography of the molybdenum. The calibration graph is linear over the ...
Free-jet spectra and structure of o-, m- and p-dihydroxybenzenes
(Elsevier, 1985-11-15)
Analysis of the free-jet spectra of hydroquinone (para), catechol (ortho) and resorcinol (meta) shows the presence of multiple origins in each molecular spectrum which are interpreted as belonging to separate structural isomers.
Free radicals in ischemic myocardial injury
(Elsevier, 1985)
Myrocardial ischemia causes release of chemotactic factors, migration of neutrophils, peroxidation of lipids, and depletion of free radical scavengers. The invading neutrophils may injure the myrocardial vasculature and ...
Evidence for two cyclic photophosphorylation reactions concurrent with ferredoxin-catalyzed non-cyclic electron transport
(Elsevier, 1985-06-26)
Addition of ferredoxin to isolated spinach chloroplast thylakoid membranes reconstitutes phosphorylating electron transfer characterized by elevated P/O ratios (1.6). When oxygen is the terminal electron acceptor for reduced ...
High-performance thin-layer chromatography assay for epoxide hydrolase activity and the determination of phenoxypropane-1,2-diols
(Elsevier, 1985)
A simple, rapid and sensitive high-performance thin-layer chromatographic assay for the determination of epoxide hydrolase activity in rat liver homogenates is described. It is extended to the determination of a series of ...
Thermodynamics of uranium intermetallic compounds I. Heat capacities of URu3 and URh3 from 5 to 850 K
(Elsevier, 1985-11)
Heat capacities of carefully characterized samples of URu3 and URh3 were measured by adiabatic calorimetry from 5 to 350 K by adiabatic calorimetry and from 300 to 850 K by enthalpy-increment drop calorimetry. Values for ...
Heparin inhibition of ferredoxin-NADP reductase in chloroplast thylakoid membranes
(Elsevier, 1985-02-01)
Heparin, an anionic polysaccharide, inhibited the ferredoxin-catalyzed reduction of NADP in spinach chloroplast thylakoid membranes. Under the same conditions of assay, heparin did not interfere markedly with photoreduction ...
Prediction and measurement of initial flocculation rates in quiescent media
(Elsevier, 1985-12)
Initial flocculation rate experiments were carried out with a dilute suspension of bidisperse polystyrene spheres (0.166 and 0.255 [mu]m in radius) under normal gravity conditions and, using a centrifuge, under conditions ...
Fischer-tropsch synthesis on charcoal-supported molybdenum: The effect of preparation conditions and potassium promotion on activity and selectivity
(Elsevier, 1985)
High dispersion and high activity charcoal-supported molybdenum catalysts were prepared using incipient wetness and equilibrium adsorption methods. Activities and selectivities of these catalysts were tested after reducing ...
Studies in vitro with ICI 174, 864, [D-Pen2, D-Pen5]-enkephalin (DPDPE) and [D-Ala2, NMePhe4, Gly-ol]-enkephalin (DAGO)
(Elsevier, 1985-02)
The interactions of a proposed, selective delta receptor antagonist (ICI 174, 864) and selective agonists at mu and delta receptors, [D-Ala2, NMePhe4, Gly-ol]-enkephalin (DAGO) and [D-Pen2, D-Pen5]-enkephalin (DPDPE), ...