Now showing items 31-40 of 43
Receptor-mediated gonadotropin action in the ovary Demonstration of acute dependence of rat luteal cells on exogenously supplied steroid precursor (sterols) for gonadotropin-induced steroidogenesis
(Elsevier, 1981-09-24)
Incubation of luteal cells with human, horse and rat sera, but not bovine sera resulted in enhanced basal and hCG-stimulated progesterone accumulation. The stimulatory effect of human or rat sera on basal, hCG- or 8 Br-cyclic ...
Hydrophilic polymers containing chiral nucleic acid base pendants as polynucleotide analogs
(Springer-Verlag, 1981-11)
A survey of our recent work on synthetic polynucleotide analogs is given. Propionic acid and 3-methyl butyric acid derivatives substituted in the 2-position with nucleic acid bases have been used as chiral pendants for ...
Heat capacity from 5 to 350 K and thermodynamic properties of cesium nitrate to 725 K
(Elsevier, 1981-05)
The low-temperature heat capacity (5 to 350 K) of CsNO3 was determined by adiabatic calorimetry. No anomalies were observed in this temperature region, the curve of heat capacity against temperature having the normal sigmoid ...
The microwave spectrum, structure and dipole moment of 1,4-pentadiyne
(Elsevier, 1981-03)
The microwave spectra of 1,4-pentadiyne and 1,4-pentadiyne-1,5-d2 are assigned and rotational and centrifugal distortion constants obtained. A unique structure could not be determined. However, analysis of the moments of ...
Bimetallic Ru-Au catalysts: Effect of the support
(Elsevier, 1981-06)
Ru-Au catalysts supported on SiO2 were characterized by using H2 and O2 chemisorption, wide-angle X-ray scattering, diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. Catalytic activity was measured ...
Emulsion stability--experimental studies on simultaneous flocculation and creaming
(Elsevier, 1981-07)
An experimental technique has been developed to study the emulsion stability with simultaneous flocculation and creaming. Experiments were carried out by using different ionic strengths, two different dispersants in water ...
Synthesis of (+/-)-desepoxy-4,5-didehydromethylenomycin A
(Elsevier, 1981)
An efficient and regiochemically controlled synthesis of (+/-)-desepoxy-4,5-didehydromethylenomycin A is reported.
Mechanism of activation of glucocerebrosidase by CO-[beta]-glucosidase (glucosidase activator protein)
(Elsevier, 1981-06-23)
The nature of the stimulatory action of the protein `coglucosidase' on gluco-cerebrosidase was investigated with the use of highly purified cofactor from bovine spleen, radioactive glucosyl ceramide and methylumbellifery ...
Factors influencing hydroxylamine inactivation of photosynthetic water oxidation
(Elsevier, 1981-03-12)
The kinetics of Mn release during NH2OH inactivation of the water oxidizing reaction is largely insensitive to the S-state present during addition of NH2OH. This appears to reflect reduction by NH2OH of higher S-states to ...
Reversible microsomal binding of hepatic aldolase
(Elsevier, 1981-10-13)
Fructose-1,6-bisphosphate aldolase (-fructose-1,6-bisphosphate -glyceraldehyde-3-phosphate lyase, EC 4.1.2.13) partitions between the microsomes and the cytosol when a rat liver homogenate is fractionated by differential ...