Now showing items 91-100 of 134
Synthesis and reactivity of rhodium(I) and iridium(I) complexes of the dianions of 2,3-pyrazinedicarboxylic and 2,5-pyrazinedicarboxylic acid
(Elsevier, 1990-03-27)
Rhodium and iridium complexes of the title ligands have been prepared containing cyclooctadiene, carbonyl, phosphine and phosphite ancillary ligands. The complexes are mononuclear or dinuclear depending on the method of ...
TRH attenuates scopolamine-induced memory impairment in humans
(Springer-Verlag, 1990-03)
The brain tripeptide thyrotropin-releasing hormone (TRH) has been demonstrated to facilitate cholinergic neurotransmission. To test its interaction with the cholinergic system in humans, high-dose TRH (0.5 mg/kg) or placebo ...
Epitaxial growth and characterization of GaAs/Al/GaAs heterostructures
(Elsevier, 1990-04-01)
We report on transmission electron microscopy, secondary ion mass spectroscopy, X-ray and Raman scattering studies of GaAs/Al/GaAs heterostructures grown by migration enhanced epitaxy.
Phase II evaluation of mitoxantrone in advanced pancreatic carcinoma: A Southwest Oncology Group study
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-02)
Patient with advanced adenocarcinoma of the pancreas and no prior chemotherapy were treated on a Phase II trial of mitoxantrone. Doses were adjusted for hepatic dysfunction as defined by bilirubin. Twenty-four patients ...
Purification of Thermus aquaticus DNA polymerase expressed in Escherichia coli
(Elsevier, 1990-12)
DNA polymerase from Thermus aquaticus has become a common reagent in molecular biology because of its utility in DNA amplification and DNA sequencing protocols. A simplified method is described here for isolating the ...
Chemisorption and FTIR study of bimetallic Pt---Au/SiO₂catalysts
(Elsevier, 1990-02)
Pt/SiO₂, Au/SiO₂, and bimetallic Pt---Au/SiO₂ catalysts were prepared by incipient wetness impregnation of nonporous SiO₂. The catalysts were characterized after reduction in H₂ by static volumetric chemisorption and ...
The human homolog of murine Evi-2 lies between two von Recklinghausen neurofibromatosis translocations
(Elsevier, 1990-08)
Von Recklinghausen neurofibromatosis (NF1) is one of the most common inherited human disorders. The genetic locus that harbors the mutation(s) responsible for NF1 is near the centromere of chromosome 17, within band q11.2. ...
Commingling and segregation analyses: Comparison of results from a simulation study of a quantitative trait
(Wiley Subscription Services, Inc., A Wiley Company, 1990)
Commingling analysis is commonly used to provide preliminary evidence for a single genetic locus with a major effect on the quantitative trait of interest. In this paper, the effectiveness of commingling analysis as a ...
The mechanism of the oxidation of propene to acrolein over antimony-tin mixed oxide catalysts
(Elsevier, 1990-05)
The oxidation of propenes such as 13CH2=CH---CH,3, CH2=CH-CD3, cis---CHD=CD---CH3, and CH2---CH---CH3 was studied over Sb6O13, SnO2, and Sb---Sn mixed oxide catalysts. The results with 13CH2=CH---CH3 and CH2=CH---CD3 were ...