Now showing items 21-30 of 74
On the origin of light-induced changes in the proton magnetic relaxation rate of chloroplast thylakoid membrane suspensions
(Elsevier, 1981-03)
The spin-lattice relaxation rate of solvent protons in suspensions of chloroplast thylakoid membranes undergoes a large transient depression following illumination in white light. This change appears to require the presence ...
Similarities between stratum corneum basic protein and histidine-rich protein II from newborn rat epidermis
(Elsevier, 1981-03-27)
The stratum corneum basic protein and histidine-rich protein II were each isolated from newborn rat epidermis and compared by biochemical and immunologic methods. The proteins were indistinguishable by immunodiffusion using ...
Delivery of liposome membrane-associated sterols through silastic membranes
(Elsevier, 1981-08-05)
The transport of sterols incorporated into the lecithin bilayer of small unilamellar liposomes through a model membrane was studied. A two-chamber diffusion cell containing liposomes with incorporated [4-14C]cholesterol ...
Topology of NH2OH-induced Mn(II) release from chloroplast thylakoid membranes
(Elsevier, 1981-07-13)
Permeant and impermeant metal ion chelators have been used in conjunction with NMR relaxation time measurements (T1) of solvent protons to probe the membrane topology of the Mn(II) released from the water-oxidizing center ...
Emulsion stability--theoretical studies on simultaneous flocculation and creaming
(Elsevier, 1981-07)
A general dynamic equation is derived describing the behavior of a polydispersed emulsion in which Brownian flocculation, sedimentation-flocculation, and creaming are taking place simultaneously. The resulting equation ...
The stereochemistry of propylene-1,2-d2 epoxidation over silver catalysts
(Elsevier, 1981-07)
The stereochemistry of the epoxidation of cis-propylene-1,2-d2 to propylene oxide over three unsupported and one supported silver catalysts as well as over Ag2O and AgO was studied by microwave spectroscopy. Variations of ...
Electromagnetic effects in the Surface Enhanced Raman Scattering from a molecule at a liquid Hg surface
(Elsevier, 1981-09-02)
In a previous publication the image enhancement effect and the enhanced radiation due to near field excitation of surface roughness were calculated for a finite-size molecule above a metal described by a nonlocal dielectric ...
Isomerization of trans-diethylstilbestrol to pseudo-diethylstilbestrol
(Elsevier, 1981-11)
This study reports the formation and isolation of a diethyl-stilbestrol-dimethylsulfoxide (DES-DMSO) adjunct and Z-3, 4-di(p-hydroxyphenyl)-2-hexene ([psi]-DES) from -DES. The presence of [psi]-DES was indicated by NMR and ...