Now showing items 11-20 of 53
Rapid purification of yeast mitochondrial DNA in high yield
(Elsevier, 1980-12-11)
A procedure is presented for the rapid isolation of mitochondrial DNA (mtDNA) in high yield from Saccharomyces cerevisiae. Yeast cells, which may be grown to late stationary phase, are broken by a combination of enzymatic ...
Spectrophotometric determination of chromium as the chromium-peroxo-4-(2-pyridylazo)resorcinol complex
(Springer-Verlag, 1980-01)
Der ternäre Chrom-Peroxo-PAR-Komplex weist einen scheinbaren molaren Extinktionskoeffizienten von 6280 l · mol −1 · cm −1 auf, wenn er aus 0,1 M schwefelsaurer Lösung mit Ethylacetat extrahiert wird. Das Beersche Gesetz ...
Aromatic antimony compounds. Transition metal complexes of 2,5-dimethylstibacyclopentadienyl
(Elsevier, 1980-12-23)
Hydrostannation of 2,4-hexadiyne with dibutyltin dihydride gave 1,1-dibutyl-2,5-dimethylstannole, which was converted to 2,5-dimethylstibacymantrene and to bis(2,5-dimethylstibacyclopentadienyl)iron.
Reduced lateral mobility of a fluorescent lipid probe in cholesterol-depleted erythrocyte membrane
(Elsevier, 1980-03-27)
The effect of cholesterol depletion of the human erythrocyte membrane on the lateral diffusion rate of a fluorescent lipid probe is reported. At low temperatures (-5 to 5[deg]C), the diffusion of the probe is 50% slower ...
Identification and characterization of the adenosine 3',5'-cyclic monophosphate binding proteins appearing during the development of Dictyostelium discoideum
(Elsevier, 1980-05-07)
A photosensitive, radioactive analogue of cyclic adenosine monophosphate, 8-azido-adenosine 3',5'-[32P]monophosphate (8-N3-cyclic AMP), was used to label the cyclic AMP binding proteins of Dictyostelium discoideum. During ...
Direct determination of selected metals in refractory powder micro samples with exploding thin film excitation
(Elsevier, 1980)
The direct determination of metallic elements in powder micro samples is explored. Emphasis is placed on refractory materials prepared as alcoholic suspensions of their powders. Silver thin films are vacuum deposited on ...
Percolation analog for a two-component liquid-vapor system
(Elsevier, 1980-10-15)
Generalized site-bond percolation theory is utilized to provide an analog for a two-component liquid-vapor system in the phase transition region. The percolation model exhibits a behaviour typical of a non-ideal real ...
Hydroxylation and expoxidation reactions catalyzed by synthetic metalloporphyrinates. Models related to the active oxygen species of cytochrome P-450
(Elsevier, 1980-02)
Iodosylbenzene has been found to react with catalytic amounts of synthetic metalloporphyrinates to give epoxides and alcohols from olefins and alkanes. Tetraphenylporphinatoiron(III) chloride (TPPFeCl) catalyzed the ...
Electron correlation and Hund's rule
(John Wiley & Sons, Inc., 1980-10)
It is suggested that simple electronic shielding effects induced by wave function antisymmetrization tend to govern the energy ordering of singlet and triplet terms within a two-electron atomic configuration. This approach ...
Structure of tri-tert-butylsilane by electron diffraction and molecular mechanics
(Elsevier, 1980-04)
A model force field for silanes is constructed by extending the model field MUB-2 to include silicon, for the following purposes: the calculation, via normal coordinate analyses, of amplitudes of vibration and shrinkage ...