Now showing items 171-180 of 204
Kinetic studies of the deactivation of O 2 ( 1 Σ g + ) and O( 1 D)
(John Wiley & Sons, Inc., 1990-12)
The kinetics of the deactivation of O 2 ( 1 Σ g + ) is studied in real time. O 2 ( 1 Σ g + ) is generated in this system by the O( 1 D) + O 2 reaction following O 3 laser flash photolysis in the presence of excess ...
Heat capacities of the wustites Fe0.9379O and Fe0.9254O at temperatures T from 5 K to 350 K. Thermodynamics of the reactions: xFe(s) + (1/4)Fe3O4(s) = Fe0.7500+xO(s) = Fe1-yO(s) at T [approximate] 850 K, and properties of Fe1-yO(s) to T = 1000 K. Thermodynamics of formation of wustite
(Elsevier, 1993-09)
Thermodynamic properties of wustites prepared from iron and iron(III) oxide, have been studied by adiabatic calorimetry. Heat-capacity measurements of metastable Fe0.9379O and Fe0.9254O from T = 5 K to 350 K yielded the ...
Molybdenum nitride catalysts : I. Influence of the synthesis factors on structural properties
(Elsevier, 1994-03)
Effects of the synthesis parameters on the structural properties of molybdenum nitride catalysts, prepared by the temperature-programmed reaction of MoO3 with NH3, have been examined. Molybdenum trioxide was heated in ...
Evaluation of the simultaneous use of Cp 2 VMe 2 and CpTiCl 2 N(SiMe 3 ) 2 as precursors to ceramic thin films containing titanium and vanadium: Towards titanium–vanadium carbonitride
(John Wiley & Sons, Ltd., 1998-03)
Ceramic thin films containing titanium, vanadium, carbon, oxygen and nitrogen were obtained on steel substrates at 873 K, under nitrogen and helium gases and at low pressure, by chemical vapor deposition (CVD) from two ...
Simplified method of making alginate-polylysine microcapsules for hybridoma cell culture using RPMI 1640 medium
(Kluwer Academic Publishers; Science & Technology Letters ; Springer Science+Business Media, 1990-09)
The method of making alginate-poly-L-lysine microcapsules for hybridoma cell culture can be simplified by cultivating the cells in RPMI 1640 medium. Phosphate concentration in RPMI 1640 medium is sufficiently high to ...
Octa(3-chloroammoniumpropyl) octasilsesquioxane
(John Wiley & Sons, Ltd., 1999-04)
The octahydrochloride salt of octa(3-aminopropyl)octasilsesquioxane can be isolated in 30% yields by controlled hydrolytic condensation of 3-aminopropyltriethoxysilane in strongly acidic methanol. The analytically pure ...
Synthesis of a disulfide stabilized RNA hairpin
(Elsevier, 1994-03-14)
An N-3 ethylthiol-modified uridine has been synthesized and incorporated through solid-phase phosphoramidite chemistry at the 5'- and 3'-termini of an RNA hairpin to provide increased conformational stability via a disulfide ...
Generation of 2-azapentadienyl anions and their cycloaddition with alkenes. Synthesis of 2-alkenylpyrrolidines
(Elsevier, 1994-09-19)
[alpha],[beta]-Unsaturated imines 2 bearing an N-[1-(tri-n-butylstannyl)]alkyl group were transmetalated with n-BuLi to generate 2-azapentadienyl anions 3 which underwent [4[pi]s+2[pi]s] anionic cycloadditions with alkenes ...
Charge-density domains in photoexcited quantum-well structures
(Elsevier, 1990-04-01)
We present theoretical and experimental results on the dielectric response of an electron-hole plasma confined to a quantum-well. Hartree calculations reveal large nonlinearities in the screening properties which, when ...