Materials Literature
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ac and dc conductivities of fast-ion conducting x${\mathrm{Na}}_{2}$S+(1-x)${\mathrm{B}}_{2}$${\mathrm{S}}_{3}$ glasses in the composition range 0.001\ensuremath{\le}x\ensuremath{\le}0.1 were analyzed using the Almond-West formula \ensuremath{\sigma}(\ensuremath{\nu})=${\mathrm{\ensuremath{\sigma}}}_{\mathrm{dc}}$[1+(…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFTIR Identification of the Supported Phases Produced in the Preparation of Silica-Supported Nickel CatalystsM. Kermarec, J. Y. Carriat, P. Burattin, M. Che, and A. DecarreauCite this: J. Phys. Chem. 1994, 98, 46, 12008–12017Publication Date (Print):November 1, 1994Publicatio…
A process to produce a family of novel materials from polycarbonate, having a microcellular structure, is described. The process utilizes the high solubility of carbon dioxide in polycarbonate to nucleate a very large number of bubbles, on the order of 1 to 10 × 109 bubbles/cm3, at temperatures well below the glass tr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidation of NO into NO2 over Active Carbon FibersIsao Mochida, Seiki Kisamori, Motohiro Hironaka, Shizuo Kawano, Yuji Matsumura, and Masaaki YoshikawaCite this: Energy Fuels 1994, 8, 6, 1341–1344Publication Date (Print):November 1, 1994Publication History Published online1…
The Tyr corner is a conformation in which a tyrosine (residue "Y") near the beginning or end of an antiparallel beta-strand makes an H bond from its side-chain OH group to the backbone NH and/or CO of residue Y - 3, Y - 4, or Y - 5 in the nearby connection. The most common "classic" case is a delta 4 Tyr corner (more…
A recombinant strain of Escherichia coli, which overexpressed phaC and phaE from Chromatium vinosum, was used to isolate poly(3-hydroxyalkanoic acid) synthase. The isolation was performed by a two-step procedure including chromatography on DEAE-Sephacel and Procion Blue H-ERD. The poly(3-hydroxyalkanoic acid) synthase…
The protein super‐family of medium‐chain alcohol dehydrogenases (and glutathione‐dependent formaldehyde dehydrogenase), polyol dehydrogenases, threonine dehydrogenase, archaeon glucose dehydrogenase, and eye lens reductase‐active ζ‐crystallins also includes Escherichia coli quinone oxidoreductase, Torpedo VAT‐1 protei…
ABSTRACT: We study the microphases of linear multiblock copolymers formed from monodisperse A- and B-type blocks in the limit in which the number of blocks is large. We find the lamellar, gyroid, hexagonal, and cubic microphases to be stable. Monocontinuous catenoid-lamellar and bicontinuous double-diamond phases are…
X-ray-photoemission spectra of 4d(${\mathit{N}}_{4,5}$) core level in heavy rare-earth elements are studied theoretically with the consideration of the 4d-4f4f(${\mathit{N}}_{4,5\mathrm{\ensuremath{-}}}$${\mathit{N}}_{6,7}$${\mathit{N}}_{6,7}$) super-Coster-Kronig decay process in the excited states. It is shown that…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSimulated Tribochemistry: An Atomic-Scale View of the Wear of DiamondJudith A. Harrison and Donald W. BrennerCite this: J. Am. Chem. Soc. 1994, 116, 23, 10399–10402Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissue 1 Nove…
Pyrolysis or combustion of plastics are of interest from different points of view: on the one hand polymers from which harmful substances may arise are involved in fires or are fed to incinerators; on the other hand plastic refuses are an alternative resource of energy or chemical raw materials. For designing recyclin…
The influence of internal stress on the magnetic anisotropy and the magnetostriction was investigated in sputter-deposited amorphous (Tb0.27Dy0.73)0.42Fe0.58 films. Films with tensile stress show in-plane anisotropy and giant magnetostriction of λ∥=400×10−6 at 1 T measured in a field parallel to the film plane at room…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray Structure of (NH4)6(Gly-Gly)2V10O28.cntdot.4H2O: Model Studies for Polyoxometalate-Protein InteractionsDebbie C. Crans, Mohammad Mahroof-Tahir, Oren P. Anderson, and Mary M. MillerCite this: Inorg. Chem. 1994, 33, 24, 5586–5590Publication Date (Print):November 1, 1994P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Mesoporous Materials: Liquid-Crystal Templating versus Intercalation of Layered SilicatesJ. C. Vartuli, C. T. Kresge, M. E. Leonowicz, A. S. Chu, S. B. McCullen, I. D. Johnson, and E. W. SheppardCite this: Chem. Mater. 1994, 6, 11, 2070–2077Publication Date (Pri…
No abstract available.
The species composition of epipelic algal assemblages on intertidal mudflats was investigated at three sites in the Severn estuary, England, between March 1990 and February 1991. Diatoms were the dominant algal group, comprising greater than 95% of living cells in 100 out of 106 lens tissue samples. Euglenoid algae we…
By using a density-functional theory we establish the existence of a ferroelectric nematic phase in fluids consisting of spherical particles which interact with Lennard-Jones and dipolar forces. Our detailed analysis of the thermodynamic limit shows that for a polarized dipolar fluid within a single domain the free en…
The effect of tensile stress on the orientation and phenotype of arterial smooth muscle cells (SMCs) cultured in three-dimensional (3D) type I collagen gels was morphologically investigated. Ring-shaped hybrid tissues were prepared by thermal gelation of a cold mixed solution of type I collagen and SMCs derived from b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural Formation of Poly(ethylene terephthalate) during the Induction Period of Crystallization. 3. Evolution of Density Fluctuations to Lamellar CrystalM. Imai, K. Kaji, and T. KanayaCite this: Macromolecules 1994, 27, 24, 7103–7108Publication Date (Print):November 1, 1…
Abstract Copolymers of L‐lactide with 15 or more mole % D‐lactide are amorphous, noncrystallizable hydrolytically degradable materials. These glassy materials are brittle in tension and bending. To make these materials suitable for use as load‐bearing devices in biomedical applications, toughness has to be enhanced. T…