Now showing items 31-40 of 56
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 ...
Distribution of D2 dopamine receptor mRNA in the primate brain
(Elsevier, 1991)
1. The distribution of the messenger RNA (mRNA) encoding the D2dopamine receptor has been mapped in the monkey brain by hybridization.2. Using [35s]-labelled riboprobes corresponding to the region of the D2 dopamine ...
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.
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 ...
Modeling of immunosensors under nonequilibrium conditions : II. Experimental determination of performance characteristics
(Elsevier, 1991-08-01)
In an attempt to optimize immunosensors operating with an immobilized antibody as binding protein and an analyte-enzyme conjugate as signal generator that is significantly larger in molecular size than the analyte, in a ...
Selective resonance enhanced multiphoton ionization of aromatic polymers in supersonic beam mass spectrometry
(Elsevier, 1991-07-15)
Various polymers have been studied using a pulsed laser evaporation method for volatilizing these species and entraining them into a supersonic jet expansion followed by resonance enhanced multiphoton ionization (REMPI) ...