Now showing items 41-50 of 204
Cell cycle of Chlorella vulgaris can deviate from the synchronous binary division model
(Kluwer Academic Publishers; Chapman and Hall ; Springer Science+Business Media, 1997-06)
Conditioned medium from high density Chlorella vugaris cultures was freeze dried extracted into ethanol. The ethanol was volatilized and the resulting powder then introduced with C. vulgaris photoautotrophic cultures which ...
Comparison of SnBr 4 and di-n-butyl tin diacetate as laser-assisted chemical vapor deposition precursors for SnO 2 -based gas sensors
(John Wiley & Sons, Ltd., 1998-03)
Laser-assisted chemical vapor deposition (LCVD) was utilized to produce SnO 2 films from SnBr 4 plus air, O 2 or N 2 O. SnO 2 films were successfully generated using either 222 or 308 14nm laser pulses but there was ...
Initiation of poly-N-acetyllactosamine chain biosynthesis occurs preferentially on complex multiantennary asparagine-linked oligosaccharides
(Elsevier, 1990-08-01)
An N-acetyl-[beta]--glucosaminyltransferase activity involved in the initiation of poly-N-acetyllactosamine chain biosynthesis can be solubilized from Ehrlich ascites tumor cell microsomal membranes. The ability of this ...
The selectivity of hydrazine oxidation on a polycrystalline rhodium surface
(Elsevier, 1991-11-02)
The surface reactions of coadsorbed hydrazine and atomic oxygen have been examined by means of temperature-programmed reaction spectroscopy (TPRS) on a clean polycrystalline rhodium surface over the 90 to 1450 K temperature ...
Molybdenum/cobalt/sulfur clusters: Models and precursors for hydrodesulfurization (HDS) catalysts
(John Wiley & Sons Ltd., 1992-09)
Sulfido clusters which incorporate molybdenum and a late transition metal, e.g. iron, cobalt or nickel, are readily prepared by the reactions of Cp 2 Mo 2 S 4 , Cp 2 Mo 2 S 2 (SR) 2 or Cp 2 Mo 2 (CO) 2 (SR) 2 with Fe 2 ...
The effect of spacer length on the polymerization of diacetylenes in sams on gold surfaces
(WILEY‐VCH Verlag GmbH & Co. KGaA, 1999-08)
The influence of the molecular architecture of diacetylene disulfides on the structure and polymerizability of self assembled monolayers on gold was investigated. The position of the diacetylene group was varied systematically ...
Vibrational analysis of 2,3,4-trichloropentanes
(Elsevier, 1990)
One meso form and the racemic isomer of 2,3,4-trichloropentane have been synthesized, and their infrared and Raman spectra analysed on the basis of a general force field refined for multiply-chlorinated hydrocarbons. ...
Continuous medium perfusion leads to long-term cell viability and oxygen production in high-density photobioreactors
(Kluwer Academic Publishers; Chapman & Hall, London ; Springer Science+Business Media, 1995-11)
A light-emitting diode-based photobioreactor (LED-based PBR) operated in a continuous perfusion mode with a perfusion rate of 3 to 6 reactor volumes a day supports high-density algal cultures, of cell concentrations up to ...
Some P---H bond substitution derivatives and fluxionality of Cp2Mo2([mu]-H)([mu]-PHPh)(CO)4
(Elsevier, 1992-11-10)
Reaction of PH2Ph with Cp2Mo2(CO)4 (Mo[triple bond]Mo) results in sequential formation of Cp2Mo2(CO)4(PH2Ph)2 and fluxional Cp2Mo2([mu]-H)([mu]-PHPh)(CO)4. Proton abstraction from Cp2Mo2([mu]-H)([mu]-PHPh)(CO)4 affords ...
Sulfided heterogeneous, bimetallic Ru/Mo catalysts derived from mixtures of Ru 3 (CO) 12 (or RuCl 3 ) and a molybdenum heteropolyanion: The reactions of ethanol with tetrahydroquinoline
(John Wiley & Sons Ltd., 1992-09)
Efforts have been made to develop Ru/Mo bimetallic catalyst systems for hydrodenitrogenation (HDN) of tetrahydroquinoline (THQ). In the course of these studies, it was discovered that in ethanol, under hydrogen and in the ...