Now showing items 441-450 of 479
Hydrogen peroxide oxidation catalyzed by chloride-depleted thylakoid membranes
(Elsevier, 1988-11-16)
Chloride-depleted thylakoid membranes which are unable to catalyze the oxidation of water can nonetheless catalyze the oxidation of hydrogen peroxide (Kelly, P. and Izawa, S. (1978) Biochim. Biophys. Acta 502, 198-210). ...
Reduction of ketones by sodium borohydride in the absence of protic solvents. Inter versus intramolecular mechanism
(Elsevier, 1982)
Acetone, acetophenone and benzophenone react with sodium borohydride in the absence of protic solvent to give the corresponding tetraalkoxyborates. In view of theseresults, the possibility of the 4-centre mechanism for ...
Fate of intravenously administered high-density lipoprotein labeled with radioiodinated cholesteryl oleate in normal and hypolipidemic rats
(Elsevier, 1983-03-01)
Radioiodinated cholesteryl oleate (125I-CO) was found to associate rapidly with plasma lipoproteins following intravenous administration to rats. The high-density lipoprotein (HDL) fraction was observed to contain the ...
FeAs: Heat capacity, enthalpy increments, other thermodynamic properties from 5 to 1350 K, and magnetic transition
(Elsevier, 1989-04)
The heat capacity of iron monoarsenide has been determined by adiabatic calorimetry from 5 to 1030 K and by drop calorimetry relative to 298.15 K over the range 875 to 1350 K. A small [lambda]-type transition is observed ...
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 ...
Synthesis of [alpha]- and [beta]-glycosides containing spin labels, as probes for studies of carbohydrate-protein interaction
(Elsevier, 1981-03-02)
Nitroxide spin-labeled [alpha]--glycopyranosides were synthesized in good yield and in a highly stereoselective manner by reaction of per-O-benzyl-[alpha]--glycopyranosyl bromides with 2,2,6,6-tetramethyl-4-piperidinol ...
Trypsin-resistant forms of human growth hormone have diabetogenic and insulin-like activities
(Elsevier, 1985-09-06)
Although diabetogenic and insulin-like activities are intrinsic properties of the growth hormone (GH) molecule, it has been frequently suggested that the hormone must be proteolytically processed for these activities to ...
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 ...
Heat capacity of MnAs0.88P0.12 from 10 to 500 K: Thermodynamic properties and transitions
(Elsevier, 1987-10)
The heat capacity of MnAs0.88P0.12 has been measured by adiabatic shield calorimetry from 10 to 500 K. It is shown that very small energy changes are connected with two magnetic order-order transitions, indicating that ...