Now showing items 41-50 of 83
Secretagogue-induced Ca2+ oscillations in isolated canine gastric chief cells
(Elsevier, 1991-01-31)
Agonist-induced changes in cytoplasmic free Ca2+ concentration (|Ca2+|i) of isolated canine gastric chief cells were evaluated by microspectrofluorometry of superfused fura-2 loaded cells. Application of high concentrations ...
Synthesis of a pyrido[1,2-a]purine nucleoside by a novel ring cleavage-annulation reaction of 3-[beta]-D-ribofuranosylimidazo-[4,5-d]--triazin-4-one
(Elsevier, 1991-10-07)
Treatment of 7-(2,3,5-tris--(t-butyldimethylsilyl)-[beta]--ribofuranosyl)imidazo[4,5-]-v-triazin-4-one (1) with MnO2 in hot pyridine furnished 7-(2,3,5-tris--(t-butyldimethylsilyl)-[beta]--ribofuranosyl)pyrido[1,2-a]-purine ...
Elastic analysis of the energy and relaxation of stepped surfaces
(Elsevier, 1991-09-01)
We present an analytical, elastic analysis for the energy and relaxation of stepped surfaces. The analysis is based upon the observation that the most prominent feature of the non-reconstructive surface relaxation consists ...
Stability of trimetrexate, a new non-classical antifolate, in infusion solutions
(Elsevier, 1991-06-28)
A prerequisite for the prolonged infusion of a drug via a totally implanted drug delivery system is that the drug solution must be sufficiently stable at physiological temperatures to endure the time intervals between drug ...
Spectroscopic studies of Lewis acid--base complexes--VI. Vibrational spectra and normal coordinate calculations for several isotopic varieties of trimethylphosphine--gallium trichloride
(Elsevier, 1991)
Raman and infrared spectra of trimethylphosphine--gallium trichloride have been obtained from microcrystalline solids, mulls and KBr discs. The data include results from the deuterated species as well as from samples ...
Lung injury and complement activation: Role of neutrophils and xanthine oxidase
(Elsevier, 1991)
Evidence is presented that oxygen products generated from xanthine oxidase (XO) may also be involved in the pathogenesis of neutrophil-mediate lung injury following intravascular activation of complement with cobra venom ...
A convenient masking group for aryl iodides
(Elsevier, 1991-11-27)
1-Aryl-3,3-dialkyltriazenes give excellent yields of easily isolated aryl iodides upon treatment with methyl iodide.
Chemical distance geometry: Current realization and future projection
(Kluwer Academic Publishers; J. C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1991-12)
Since the 1988 monograph “Distance Geometry and Molecular Conformation” by Crippen and Havel, there have been significant changes in the application of distance geometry to problems of chemical interest. This review attempts ...
Ferrous iron release from transferrin by human neutrophil-derived superoxide anion: Effect of pH and iron saturation
(Elsevier, 1991-01)
The ability of superoxide anion (O2-) from stimulated human neutrophils (PMNs) to release ferrous iron (Fe2+) from transferrin was assessed. At pH 7.4, unstimulated PMNs released minimal amounts of O2- and failed to ...