Now showing items 81-90 of 97
Characterization and quantitation of 3-alkylthymidines from reactions of mutagenic propylene oxides with thymidine
(Elsevier, 1984-12)
Thymidine was reacted in methanol with four epoxides of varying mutagenicities: propylene oxide, glycidol, epichlorohydrin and trichloropropylene oxide. A single product was detected with each epoxide, and these products ...
Use of monoclonal antibody probes against rat hepatic cytochromes P-450c and P-450d to detect immunochemically related isozymes in liver microsomes from different species
(Elsevier, 1984-11-15)
Nine distinct monoclonal antibodies raised against purified rat liver cytochrome P-450c react with six different epitopes on the antigen, and one of these epitopes is shared by cytochrome P-450d. None of these monoclonal ...
Genetic variation in the carbonic anhydrase isozymes of macaque monkeys. IV. Degradation by heat and proteolysis of normal and variant carbonic anhydrase isozymes of Macaca nemestrina
(Elsevier, 1984-04)
Studies were undertaken on the heat denaturation and proteolytic degradation by [alpha]-chymotrypsin of the normal red cell carbonic anhydrase isozyme, CA II, and two electrophoretic variants of carbonic anhydrase I, CA ...
Coagulation processes with a phase transition
(Elsevier, 1984-01)
Smoluchowski's coagulation equation with a collection kernel K(x, y) ~ (xy)[omega] with describes a gelation transition (formation of an infinite cluster after a finite time tc (gel point)). For general [omega] and t > ...
Calculations on the helium isoelectronic sequence using Coulomb Green's function variables
(Elsevier, 1984-02-24)
Calculations on the ground states of the helium isoelectronic series are carried out using variational wavefunctions of the form [psi] (x,y), in which x and y are the combinations r1 + r2 +/- r12 occurring in the Coulomb ...
The chloride requirement for photosynthetic oxygen evolution. Analysis of the effects of chloride and other anions on amine inhibition of the oxygen-evolving complex
(Elsevier, 1984-09-27)
In the presence of Cl-, the severity of ammonia-induced inhibition of photosynthetic oxygen evolution is attenuated in spinach thylakoid membranes (Sandusky, P.O. and Yocum, C.F. (1983) FEBS Lett. 162, 339-343). A further ...
Pituitary-adrenal mediation of bombesin-induced inhibition of gastrointestinal transit in rats
(Elsevier, 1984-11)
Centrally administered bombesin (0.1-3.5 [mu]g, i.c.v.) inhibits gastrointestinal transit of a charcoal meal in a dose-related manner in rats. The roles of pituitary and adrenal glands in the mediation of this effect were ...
Prostaglandin modulation of N-formylmethionylleucylphenylalanine-induced transmembrane potential changes in rat neutrophils
(Elsevier, 1984-07-20)
Prostaglandins of the E-series (PGEs) and PGI2 will inhibit formylmethionylleucylphenylalanine- (f-Met-Leu-Phe) induced lysosomal enzyme release and superoxide-anion (O-2) production by neutrophils. The inhibitory effects ...
Theoretical treatment of cholesterol monohydrate dissolution in Renex-690/ionic surfactant systems based on a physical model approach
(Elsevier, 1984-10)
The dissolution kinetics of cholesterol monohydrate in the presence of Renex-690 and ionic surface active agents (benzalkonium chloride and sodium dodecyl sulfate) are dramatically influenced by the addition of NaCl. The ...
Comment on enhanced Raman scattering from adsorbates on semiconductor surfaces
(Elsevier, 1984-11-02)
A recently published model of surface enhanced Raman scattering from adsorbed molecules on semiconductor surfaces is compared to our experimental results for amorphous carbon on PbTe. The model fails to account for the ...