Now showing items 21-28 of 28
The reaction of H 8 Si 8 O 12 with a chromium oxide surface: a model for stainless steel surface modification
(John Wiley & Sons, Ltd., 1999-04)
Many metal alloys are susceptible to corrosion, particularly after processing steps such as welding. Chemical vapor deposition (CVD) is an effective way to modify metal surfaces and impart specific physical and chemical ...
M x –O y –Si z bonding models for silica-supported Ziegler–Natta catalysts
(John Wiley & Sons, Ltd., 1999-04)
Three reactants, polyhedral oligosilsesquioxanes (POSS) (c-C 6 H 11 ) 7 (Si 7 O 9 )(OH) 3 (1), butylethylmagnesium (2) and titanium tetrachloride TiCl 4 (3), react in three different ways according to the order of addition ...
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 ...
Phase II Trial of Suramin in Patients with Metastatic Renal Cell Carcinoma
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-05)
This study was conducted to assess the efficacy and toxicity of suramin administered using a fixed dose schedule in patients with advanced renal cell carcinoma. Fourteen eligible patients with advanced renal cell carcinoma ...
Synthesis of 6- or 7-substituted 1,2,3,4-tetrahydroisoquinoline- 3-carboxylic acids
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-03)
A straightforward approach for the synthesis of several new, aryl-substituted derivatives of the conformationally constrained phenylalanine analogue 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic) is described. Tic, ...
Cracks developed during SrTiO 3 thin-film preparation from polymeric precursors
(John Wiley & Sons, Ltd., 1999-05)
Strontium titanate (SrTiO 3 ) thin films were prepared by dip-coating Si(111) single-crystal substrates in citrate solutions of ethylene glycol, considering several citric acid/ethylene glycol (CA/EG) ratios. Measurements ...
Acid- and base-treated Fe 3+ -TiO 2 -pillared clays for selective catalytic reduction of NO by NH 3
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-03)
Fe 3+ -ion-exchanged delaminated pillared clays (PILCs) have been found previously to be more active than the vanadia-based catalysts for selective catalytic reduction (SCR) of NO by NH 3 . The effects of acid treatment ...
Preparation of barium strontium titanate powder from citrate precursor
(John Wiley & Sons, Ltd., 1999-05)
TiCl 4 or titanium isopropoxide reacted with citric acid to form a titanyl citrate precipitate. Barium strontium citrate solutions were then added to the titanyl citrate reaction to form gels. These gels were dried and ...