Now showing items 31-40 of 51
Siloxane network formation from the Si 8 O 20 8− silicate species and dimethyldichlorosilane
(John Wiley & Sons, Ltd., 1999-04)
Organic-silica hybrids were synthesized from the Si 8 O 20 8− silicate anion by the reaction with an excess of dimethyldichlorosilane. The structure of the hybrids has been found to comprise the Si 8 O 20 8− structure ...
Synthesis and applications of TEOS/PDMS hybrid material by the sol–gel process
(John Wiley & Sons, Ltd., 1999-05)
An organically modified silicate, ormosil, was synthesized with an inorganic precursor, (tetraethoxysilane, TEOS) and an organic precursor [poly(dimethylsiloane), PDMS] through sol–gel chemistry. The bonding characteristics ...
Oral self-administration of ethanol, phencyclidine, methadone, pentobarbital and quinine in rhesus monkeys
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-11)
Rationale: Simultaneous and sequential drug use among clinical populations is the norm, whereas the pattern of self-administration of multiple drugs among non-human primate populations has not been thoroughly explored. ...
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 ...
Reinforcing and discriminative stimulus effects of the neuroactive steroids pregnanolone and Co 8-7071 in rhesus monkeys
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-07)
Rationale and Objectives : The present study was designed to assess possible abuse-related effects of the endogenous neuroactive steroid pregnanolone (3α-hydroxy-5β-pregnan-20-one) and the orally bioavailable, water-soluble ...
Systemic effects of E-2078, a stabilized dynorphin A(1–8) analog, in rhesus monkeys
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-04)
Rationale : E-2078 ([ N -methyl-Tyr 1 , N -methyl-Arg 7 , d -Leu 8 ] dynorphin A(1–8) ethylamide) is a dynorphin A(1–8) analog with a reduced tendency to be biotransformed, when compared to the unmodified opioid peptide. ...
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 ...
Influence of Smoking Status on Angiotensin-Converting Enzyme Inhibition–Related Improvement in Coronary Endothelial Function
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-05)
Summary. Our study evaluated the influence of smoking status on coronary endothelial function in normotensive patients with coronary artery disease who received placebo or the angiotensin-converting enzyme inhibitor quinapril ...
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 ...