Now showing items 281-290 of 373
Multicenter phase II trial of brequinar sodium in patients with advanced squamous-cell carcinoma of the head and neck
(Springer-Verlag, 1992-03)
A total of 19 patients with advanced squamous-cell carcinoma of the head and neck who had not previously been exposed to chemotherapy were treated with brequinar sodium as first-line chemotherapy. Brequinar was given ...
Neopentane reactions over bimetallic Pt---Sn/AI2O3 and Pt---Au/SiO2 catalysts
(Elsevier, 1991-12)
The reaction of 2,2-dimethylpropane (neopentane) with hydrogen was studied over two series of supported bimetallic catalysts containing platinum as the primary group VIII metal and either gold or tin as the second metallic ...
Microstructure of a Pd/ceria–zirconia catalyst after high-temperature aging
(Kluwer Academic Publishers-Plenum Publishers; Kluwer Academic Publishers ; Springer Science+Business Media, 1998-03)
A model automotive exhaust catalyst, consisting of 2.25 wt% Pd supported on initially high-surface-area (88 m 2 /g) cerium–zirconium mixed oxide (Ce 0.5 Zr 0.5 O 2 ), was studied by X-ray diffraction (XRD), thermogravimetric ...
Hydrogen Peroxide-Dependent Formation and Bleaching of the Higher Oxidation States of Bovine Erythrocyte Green Hemeprotein
(Elsevier, 1993-02-15)
The ferric and ferrous forms of bovine erythrocyte green hemeprotein react with hydroperoxides to form higher oxidation state intermediates with absorbance maxima in the Soret region at 426 and 422 nm, respectively. In the ...
Infrared spectra and structures of hexamethyl- and hexaethylhydrodiborate ions, H[B(CH3)3]-2 and H[B(C2H5)3]-2, in glycol ether solution
(Elsevier, 1992-02)
Infrared spectra have been obtained of lithium hexamethyl- and hexaethylhydrodiborates and deuterodiborates in diglyme solution at temperatures near 0[deg]C. Assignments are proposed and arguments are presented in support ...
A potential animal model for studying CF heterozygote advantage: Genetic variation in theophylline-inducible colonic chloride currents among inbred strains of mice
(Elsevier, 1992-02)
We have used Ussing chambers to measure chloride secretion by colonic segments (mucosa, muscularis, and serosa) from various inbred strains of mice. We found lower theophylline-induced Cl- secretion in the DBA/2J than in ...
Normal coordinate analysis of bilirubin vibrational spectra: Effects of intramolecular hydrogen bonding
(Elsevier, 1993-11)
Normal coordinate analyses are presented for half-bilirubin molecules. Calculations for the A---B pyrromethenone include intramolecular hydrogen bonds, while those for the C---D chromophore exclude intramolecular hydrogen ...
Thermodynamics of the thallium alkanoates VII. Heat capacity and thermophysics of thallium(I) butanoate at temperatures from 6 K to 480 K
(Elsevier, 1994-08)
The heat capacity of thallium(I) butanoate has been determined by adiabatic calorimetry from temperatures T of 5 K to 350 K and by differential-scanning calorimetry (d.s.c.) from 320 K to 480 K. A transition at T = (154.2 ...
Characterization and hydrodesulfurization activity studies of unpromoted molybdenum sulfides prepared by elemental solid state reaction
(Elsevier, 1992-10)
Solid state reactions of elemental molybdenum and sulfur were used to synthesize unpromoted, model HDS catalysts. The samples studied had synthesis stoichiometries of MoS2 MoS1.95, and MoS1.975. Catalytic activity for the ...