Now showing items 41-50 of 637
Optically detected zero field magnetic resonance of phosphorous activated alkali halide crystals
(Elsevier, 1977-10-15)
Optically detected zero field magnetic resonance (ODMR) has been utilized to obtain the fine structure parameters |D| and |E| of the phosphorescent color center in phosphorous activated potassium chloride and bromide single ...
Extraction, separation and labeling with 14 C-glucose of hela cell polyglucose, RNA and DNA and comparison of the molecular weights and buoyant densities of polyglucose from poliovirus-infected and noninfected cultures
(Wiley Subscription Services, Inc., A Wiley Company, 1970-01)
The aqueous phase of phenol extracts of HeLa cells contains polyglucose (CHO) n , RNA, and DNA. These macromolecules were precipitated together and removed from 50% (v/v) ethanol solutions with a stirring rod. The viscous ...
Stimulated phosphorylation of non-histone phosphoproteins in SV-40 transformed WI-38 human diploid fibroblasts
(Elsevier, 1975-08-06)
Because the phosphorylation of non-histone proteins has been suggested to play a role in the regulation of eukaryotic gene transcription, we have compared the phosphorylation of these proteins in normal and SV-40 transformed ...
The inhibition of the fatty acid oxygenase of sheep vesicular gland by antioxidants
(Elsevier, 1973-02-14)
Antioxidants inhibit the fatty acid oxygenase of sheep vesicular gland and soybean lipoxygenase in an instantaneous, reversible manner. Their inhibitory effectiveness was not related to their traditional antioxidant potencies ...
Structural studies of capsular polysaccharide of type XII diplococcus pneumoniae
(Elsevier, 1974-10)
The capsular polysaccharide of Diplococcus pneumoniae Type XII contains residues of -glucose and -galactose in a molar ratio of 2:1. The methylated polysaccharide yielded upon hydrolysis 2,3,4,6-tetra- and 3,4,6-tri-O-me ...
The correspondence between the molecular orbital and differential ionization energies methods
(Springer-Verlag, 1970-01)
The correspondence between Self-Consistent Hückel MO methods and Differential Ionization Energies methods is discussed in terms of the approximations used for the diagonal matrix elements. The two methods are shown to be ...
Electron paramagnetic resonance studies on nitrogenase. III. Function of magnesium adenosine 5'-triphosphate and adenosine 5'-diphosphate in catalysis by nitrogenase
(Elsevier, 1973-02-22)
The electron paramagnetic resonance spectra of azoferredoxin and molybdoferredoxin, components of the nitrogenase of Clostridium pasteurianum, disappear when the proteins are oxidized by certain dyes. When molybdoferredoxin ...
Spectral variational principle for Green's functions
(Springer-Verlag, 1972-12)
For a suitable approximation ( q, q′, τ ) to the Dirac-Feynman Green's function of a quantummechanical system, the parameter is defined, where ℒ≡ i ∂/∂τ−ℋ. It is shown that Δ ≧0 and Δ →0 as K→K , the exact Green's function, ...
Aspirin as a quantitative acetylating reagent for the fatty acid oxygenase that forms prostaglandins
(Elsevier, 1976-01)
A selective acetylation of the prostaglandin-forming fatty acid oxygenase (part of the prostaglandin "synthetase" system) occurs with 100 [mu]M concentrations of aspirin (acetylsalicylic acid). The amount of acetylation, ...
Thermal force on particles in the transition regime
(Elsevier, 1970-10)
An interpolation method is proposed for predicting and correlating thermal forces acting on spherical particles suspended in a rarefied gas. The result obtained is applicable over the entire Knudsen number range from free ...