Materials Literature
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The synthesis of a new disc-like mesogenic compound permitted, for the first time, ferroelectric electrooptical switching in a tilted columnar liquid crystal. The spontaneous molecular dipole moment is induced by the bend between the dibenzopyrene core and part of the eight O-hexyllactic acid chains attached to it. Tw…
Cellobiohydrolase (CBH, EC 3.2.91) was purified to homogeneity from Trichoderma reesei culture fluids by means of preparative isoelectric focussing (IEF). Its isoelectric points was 4.2. The degradation product of crystalline cellulose (Avicel and cotton) was predominantly cellobiose. The action of purified endoglucan…
Carbon nanotubes were investigated by means of electron energy-loss spectroscopy. Two peaks due to the π plasmon and the π+σ plasmon were observed. The energy of the π+σ plasmon peaks varied from 22.0 eV to 24.5 eV, which roughly agrees with the average plasmon energy of graphite. A shoulder due to single electron exc…
Microbiology Society journals contain high-quality research papers and topical review articles. We are a not-for-profit publisher and we support and invest in the microbiology community, to the benefit of everyone. This supports our principal goal to develop, expand and strengthen the networks available to our members…
The role of oxygen in chemical modification and cross-linking of rat tail collagen by glucose was studied at physiological pH and temperature in vitro. Cross-linking of collagen under air depended on glucose concentration, but was inhibited under antioxidative conditions (nitrogen atmosphere with transition metal chel…
We have studied model catalysts comprised of vanadium or vanadia deposited onto both stoichiometric and reduced single-crystal TiO2(110) surfaces by using XPS, UPS, Auger, LEED and work-function measurements. Changes in the electronic and geometric structure of TiO2 supports are monitored during overlayer formation in…
The surface tension of normal liquid alkanes (chain lengths between 15 and 18 carbon atoms) has been measured as a function of temperature. In all cases the tension exhibits a well-defined change in behavior at a temperature close to, but distinct from, the melting point. The phenomena are consistent with a surface-in…
Low-temperature magnetic properties of the \ensuremath{\beta} and \ensuremath{\gamma} phases of p-nitrophenyl nitronyl nitroxide (p-NPNN) were determined by measuring the specific heat, the magnetic susceptibility, and the hysteresis curve of magnetization above $^{3}\mathrm{He}$ temperature in external magnetic field…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic evidence for selenium iodides in carbon disulfide solution: Se3I2, Se2I2, and SeI2Madhuban Gopal and John MilneCite this: Inorg. Chem. 1992, 31, 22, 4530–4533Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnionic polyamides modified with poly(oxypropylene) by "one-shot" RIM technology: structural and morphological characterizationA. Boscolo Boscoletto, G. Trezza, B. Andreis, L. Milan, M. Tavan, and P. FurlanCite this: Macromolecules 1992, 25, 21, 5752–5758Publication Date (Pr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopy of a series of heterometallic gold-platinum phosphine cluster compoundsYu. M. Shul'ga, A. V. Bulatov, Rachael A. T. Gould, Wayde V. Konze, and Louis H. PignoletCite this: Inorg. Chem. 1992, 31, 22, 4704–4706Publication Date (Print):October 1,…
The optical and structural properties of porous Si films produced by electrochemical and chemical dissolution of Si have been studied by a variety of techniques. Raman scattering and transmission electron microscopy have shown the samples to contain crystalline Si wires and (or) spherites 3–8 nm in diameter and (or) a…
The influence of strain rate and yarn number on tensile test results is investigated using a model to describe the tensile curve. A good correlation is obtained with the experimental stress-strain curves. The influence of the yarn number on the tensile modulus and the tensile curve is not quite the same for ring and r…
Gadolinium (4s)-4-(4-ethoxybenzyl-3,6,9-tris(carboxylato-methyl)-3,6,9- triazaudecandioic acid (EOB) diethylenetriaminepentaacetic acid (DTPA), a hepatocellular-directed magnetic resonance (MR) contrast agent, and coated superparamagnetic iron oxide particles (SPIO), a Kupffer cell-directed contrast agent, were compar…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMoessbauer spectroscopy and magnetization studies of .alpha.- and .beta.-ruthenium trichlorideY. Kobayashi, T. Okada, K. Asai, M. Katada, H. Sano, and F. AmbeCite this: Inorg. Chem. 1992, 31, 22, 4570–4574Publication Date (Print):October 1, 1992Publication History Published…
Because of their preferred orientation, the addition of boron nitride dispersions to hot‐pressed boron carbide was found to result in a considerable degree of anisotropy in thermal conductivity of the resulting composite, indicated by an increase in the thermal conductivity perpendicular to the hot‐pressing direction…
An experimental investigation of the packing of some ternary mixtures of nonspherical particles has been conducted. The double extrapolation method is used to determine the packing density of a particle mixture in infinite space. The application of experimental design to particulate mixture problems is demonstrated. T…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilane alcoholysis by a nickel(II) complex in a N, O, S ligand environmentDaniel E. Barber, Zheng Lu, Thomas Richardson, and Robert H. CrabtreeCite this: Inorg. Chem. 1992, 31, 22, 4709–4711Publication Date (Print):October 1, 1992Publication History Published online1 May 200…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduced nitrogen hydride complexes of a cofacial metallodiporphyrin and their oxidative interconversion. An analysis of ammonia oxidation and prospects for a dinitrogen electroreduction catalyst based on cofacial metallodiporphyrinsJames P. Collman, James E. Hutchison, Matth…
Abstract Intercalation of naphthalene and anthracene into alkyltrimethylammonium (C n H 2n+1 (CH 3 ) 3 N + ; n = 8, 12, 14, 16, and 18)-montmorillonites was carried out by novel solid-solid reactions at room temperature. Octyltrimethylammonium(C8)-montmorillonite did not form an intercalation compound with either naph…