Now showing items 21-30 of 861
Vibrational analysis of crystalline diketopiperazine--II. Normal mode calculations
(Elsevier, 1984)
Based on our Raman and i.r. [1] data and assignments for DKP and five of its isotopic derivatives, we have refined an intramolecular force field in a non-redundant basis. This analysis shows that the cis peptide group may ...
Association of calmodulin inhibition, erythrocyte membrane stabilization and pharmacological effects of drugs
(Elsevier, 1982-11-08)
The present study was designed to determine whether there is an association of drug-induced inhibition of calmodulin functions, drug-induced membrane stabilization (protection against osmotic lysis), and pharmacological ...
Transtubular bioreactor: A perfusion device for mammalian cell cultivation
(Kluwer Academic Publishers; Science & Technology Letters ; Springer Science+Business Media, 1989-01)
A transtubular mammalian cell perfusion chamber has been developed that allows separate delivery and control of medium and gas flow to the cells. The hydrodynamic and mass transfer characteristics of the reactor are studied ...
Cycloaddition of vinyl aziridines with unsaturated substrates. A novel rearrangement of an unsaturated nitro compound.
(Elsevier, 1981)
Vinylaziridine undergoes reaction with electrophilic acetylenes and olefins to produce 7-membered azepine derivatives. With [beta]-nitro-styrene however, a novel rearrangement occurs, presumably via an ene reaction to ...
Multiple frequency EPR studies on three forms of oxidized cytochrome c oxidase
(Elsevier, 1983-10-17)
Bovine heart mitochondrial cytochrome c oxidase (cytochrome aa3) (EC 1.9.3.1) has been demonstrated to occur in several forms when the redox centers in the protein are thought to be fully oxidized. We report here the results ...
Immunochemical studies on the binding specificity of the blood group Leb specific lectin Griffonia simplicifolia IV
(Elsevier, 1983-05)
The specificity of the Griffonia simplicifolia IV (GS-IV) lectin was studied by quantitative precipitin and quantitative precipitin inhibition assays. The lectin precipitated most strongly with a human H,Leb blood group ...
Anodic oxidation of dihydronicotinamide adenine dinucleotide at solid electrodes; mediation by surface species
(Elsevier, 1983-02-10)
The mechanism and kinetics for the two-electron oxidation of 1.4-dihydronicoeueamide adenine dinucleotide (NADH) to NAD+ at gold, platinum and glassy carbon (GC) rotating case electrodes at various solution pH and NADH ...
Development of hypothalamic opioid neurons: A combined immunocytochemical and [3H]thymidine autoradiographic study
(Elsevier, 1985-02)
Using a combined technique of immunocytochemistry and [3H]thymidine autoradiography, we have determined the "birth-date" of opioid peptide containing neurons in three hypothalamic nuclei. These include proopiomelanocortin ...
A specific radioimmunoassay for androstenedione with reduced bridge-binding
(Elsevier, 1984-09)
Antibody used in a steroid radioimmunoassay raised against a steroid hapten-carrier protein conjugate may recognize both the hapten and the chemical bridge to the protein. Use of the same bridge in the radioisotopic label ...