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Showing 25 to 36 of 1071 entries
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Carcinogenicity of Sulfuric Acid in Rats and Mice.

Pathology oncology research : POR

Uleckiené S, Griciuté L.
PMID: 11173623
Pathol Oncol Res. 1997;3(1):38-43. doi: 10.1007/BF02893351.

An International Agency for Research on Cancer (IARC) committee recognized aerosol of sulphuric acid as a human carcinogen on the basis of epidemiological studies. No experimental studies on the carcinogenicity, either of sulfuric acid aerosol or of sulfuric acid...

Total Synthesis of (+)-Sinefungin.

The Journal of organic chemistry

Ghosh AK, Liu W.
PMID: 11667452
J Org Chem. 1996 Sep 06;61(18):6175-6182. doi: 10.1021/jo960670g.

Sinefungin (1) a nucleoside antibiotic isolated from Streptomyces has been synthesized from D-ribose. Both the C-6 and C-9 stereogenic centers were constructed by efficient asymmetric syntheses. The C-6 amine stereochemistry was set by a highly diastereoselective allylation (>99% de)...

Effects of octreotide on gallbladder pressure and myoelectric activity of Oddi sphincter in rabbits.

World journal of gastroenterology

Zhou JH, Liu CY, Zhang RH, Wang HR, Liu KJ.
PMID: 11819285
World J Gastroenterol. 1998 Jun;4(3):238-241. doi: 10.3748/wjg.v4.i3.238.

AIM:To observe the effect of octreotide (OT) and somatostatin (SS) on gallbladder pressure and myoelectric activity of SO in rabbits.METHODS:Male rabbits fasted for 15h-18h and anesthetized with urethane. The mean gallbladder pressure (GP) and myoelectric activity of SO were...

NTP Carcinogenesis Studies of 4,4'-Methylenedianiline Dihydrochloride (CAS No. 13552-44-8) in F344/N Rats and B6C3F1 Mice (Drinking Water Studies).

National Toxicology Program technical report series

[No authors listed]
PMID: 12750745
Natl Toxicol Program Tech Rep Ser. 1983 Jun;248:1-182.

4,4'-Methylenedianiline is used primarily as a chemical intermediate in the closed system production of isocyanates and polyisocyanates. These chemicals are used extensively in the manufacture of rigid polyurethane foams for thermal insulation and in the production of semiflexible polyurethane...

The use of a thermally reversible bond for molecular imprinting of silica spheres.

Journal of the American Chemical Society

Ki CD, Oh C, Oh SG, Chang JY.
PMID: 12475312
J Am Chem Soc. 2002 Dec 18;124(50):14838-9. doi: 10.1021/ja0277881.

A silica monomer-estrone complex (EstSi) having a thermally cleavable urethane bond and a cross-linkable triethoxysilane group was synthesized. From EstSi and TEOS, spherical silica particles with sizes of 1.5-3 mum were prepared. The template molecules were removed from the...

Marked increase in the binding strength between the substrate and the covalently attached monolayers of zeolite microcrystals by lateral molecular cross-linking between the neighboring microcrystals.

Journal of the American Chemical Society

Park JS, Lee YJ, Yoon KB.
PMID: 14971916
J Am Chem Soc. 2004 Feb 25;126(7):1934-5. doi: 10.1021/ja038605t.

Monolayers of cubic zeolite microcrystals (1.7 x 1.7 x 1.7 and 0.3 x 0.3 x 0.3 mum3) were assembled on glass plates through imine- or urethane-linkages between the zeolite-tethered 3-aminopropyl (AP) groups and the glass-bound benzaldehyde or isocyanate groups,...

[Oral papaverine prevents morphine-induced constipation without interfering with analgesia achieved with oral morphine].

Schmerz (Berlin, Germany)

Jurna I, Jurna K, Baldauf J, Zenz M.
PMID: 12799874
Schmerz. 1996 Feb 15;10(1):27-35. doi: 10.1007/s004829600011.

Long-term administration of morphine for the treatment of chronic pain produces constipation; this requires the use of laxatives, which impair water absorption and upset the electrolyte balance. Morphine-induced constipation is mainly due to inhibition of the propulsive movement of...

Interfacial interactions in polymer-layered silicate nanocomposites.

Langmuir : the ACS journal of surfaces and colloids

Kato R, Liauw CM, Allen NS, Irure A, Wilkinson AN, Stanford JL, Fithriyah NH.
PMID: 18205417
Langmuir. 2008 Mar 04;24(5):1943-51. doi: 10.1021/la702620c. Epub 2008 Jan 19.

Interactions between sodium montmorillonite (Na-MMT) and a variety of probes, some of which are intended to model components of a polyurethane system, have been studied. Particular attention was given to the effect of preadsorbed water on the adsorption behavior...

Terminal titanium-ligand multiple bonds. Cleavages of C=O and C=S double bonds with Ti imido complexes.

Inorganic chemistry

Hsu SH, Chang JC, Lai CL, Hu CH, Lee HM, Lee GH, Peng SM, Huang JH.
PMID: 15476379
Inorg Chem. 2004 Oct 18;43(21):6786-92. doi: 10.1021/ic049474f.

Treatment of (t-)BuN=TiCl(2)Py(3) with 2 equiv lithium ketiminate compound, Li[OCMeCHCMeN(Ar)] (where Ar = 2,6-diisopropylphenyl), in toluene at room temperature gave (t-)BuN=Ti[OCMeCHCMeN(Ar)](2) (1) in high yield. The reaction of 1 with phenyl isocyanate at room-temperature resulted in imido ligand exchange...

URETHANE: ABSENCE OF PARALLELISM WITH THE ANTI-SULFONAMIDE ACTION OF p-AMINOBENZOIC ACID.

Science (New York, N.Y.)

Martin GJ, Fisher CV.
PMID: 17745020
Science. 1942 Jun 12;95(2476):603. doi: 10.1126/science.95.2476.603.

No abstract available.

A novel urethane containing copolymer as a surface modification additive for blood contact materials.

Journal of materials science. Materials in medicine

Ji J, Barbosa MA, Feng L, Shen J.
PMID: 15348577
J Mater Sci Mater Med. 2002 Jul;13(7):677-84. doi: 10.1023/a:1015789726455.

Surface modification to develop a biomolecules-presenting surface is of interest, both from a scientific and an industrial point of view. In this research, a penta-block-coupling polymer of warfarin-PEO-MDI-PEO-warfarin was specially designed as the surface modifying additive (SMA). The warfarin-modified...

Rheological behavior of aqueous micellar solutions of a triblock copolymer of ethylene oxide and 1,2-butylene oxide: B10E410B10.

Langmuir : the ACS journal of surfaces and colloids

Mistry D, Annable T, Yuan XF, Booth C.
PMID: 16548547
Langmuir. 2006 Mar 28;22(7):2986-92. doi: 10.1021/la0532205.

A triblock copolymer of ethylene oxide and 1,2-butylene oxide, denoted B10E410B10, was prepared by sequential oxyanionic polymerization and characterized by 13C NMR spectroscopy and gel permeation chromatography. Micellization and the formation of micelle clusters in dilute aqueous solution, the...

Showing 25 to 36 of 1071 entries