Materials Literature
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A 2.8-kb HindIII fragment, containing three open reading frames, has been cloned and sequenced from Clostridium litorale. The first gene grdA encoded the selenocysteine-containing protein PA of the glycine reductase complex, a protein of 159 amino acids with a deduced molecular mass of 16.7 kDa. The second gene (grdB)…
Abstract Polyester macromonomers bearing a polymerizable methacryloyl or 10-undecenolyl group at the chain end were synthesized by the lipase-catalyzed ring-opening polymerization of 12-dodecanolide in the presence of a vinyl ester having the corresponding polymerizable group.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLangmuir-Blodgett-Kuhn Multilayers of Polyglutamates with Azobenzene Moieties: Investigations of Photoinduced Changes in the Optical Properties and Structure of the FilmsMichael Buechel, Zouheir Sekkat, Stefan Paul, Birgit Weichart, Henning Menzel, and Wolfgang KnollCite thi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Small-Angle X-ray Scattering Study of High-Density Polyethylene and Ultrahigh Molecular Weight PolyethyleneA. Bellare, H. Schnablegger, and R. E. CohenCite this: Macromolecules 1995, 28, 23, 7585–7588Publication Date (Print):November 1, 1995Publication History Published on…
The frequency-dependent behavior of the storage modulus G′ and loss modulus G″ has been measured for an ordered latex at different volume fractions. From these measurements the volume fraction dependency of the static shear modulus was obtained. The theoretical static shear modulus has been deduced from a stress tenso…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTManganese(II) and Gadolinium(III) Complexes with New 13- and 16-Membered Dioxopolyazacycloalkanes with Pendant Hydroxy and Carboxymethyl GroupsMichiko B. Inoue, Rosa Elena Navarro, Motomichi Inoue, and Quintus FernandoCite this: Inorg. Chem. 1995, 34, 24, 6074–6079Publicatio…
Optical-absorption and laser-selective-excitation spectroscopy have been used to investigate the electronic energy level structures of the actinide ion ${\mathrm{Cm}}^{3+}$ and the lanthanide ion ${\mathrm{Gd}}^{3+}$ in host crystals of ${\mathrm{LuPO}}_{4}$. Crystal-field levels have been determined up to 35 000 and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Metal Ion Incorporation Reactions of the Cuboidal Fe3S4 ClusterJian Zhou and R. H. HolmCite this: J. Am. Chem. Soc. 1995, 117, 45, 11353–11354Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 199…
Abstract We could resolve the spin-orbit splitting of 160 ± 4 cm -1 in the 2 II ground state of O 2 - anions by high resolution photodetachment photoelectron spectroscopy. The observed splitting is in good agreement with the theoretically derived value. Our directly measured electron affinity of O 2 is 450 ± 2 meV and…
Approximately 19.5 volume percent, 50.7 at % Ni-Ti shape memory alloy fiber reinforced 6061-T6 aluminum alloy matrix composite (SMA-MMC) and homogeneous 6061-T6 control materials were produced by vacuum hot pressing. The test materials were initially subjected to a 5.8% tensile elongation at room temperature. During t…
A novel route to low‐cost processing of silicon carbide (SiC) layer structures is desribed. The processing involves pressureless liquid‐phase cosintering of compacted power layers of SiC, containing alumina (Al 2 O 3 ) and yttria (Y 2 O 3 sintering additives to yield and yttrium aluminum garnet (YAG) second phase. By…
The electronic structure and the optical properties of the organic superconductor \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$Cu(NCS${)}_{2}$ are fully elucidated by means of first-principles self-consistent local-density calculation. The band effective masses on the Fermi surfaces are found to be ${\mathit{m}}_{\mathrm{\en…
The effects of high-energy irradiation on the structure, properties, and processing of polymers are of considerable scientific and commercial significance and have been reported in several books and review articles [101]. In this massive literature, two of the major radiation-induced changes reported are crosslinking…
Propagating fingerlike solitary waves are observed in an antiferroelectric liquid crystal on application of an electric field above a threshold field ${\mathit{E}}_{\mathrm{th}}$. On reducing the field below ${\mathit{E}}_{\mathrm{th}}$ the fingers recede, also as solitary waves. The velocity of the waves, which to ou…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Soluble Poly(arylenevinylene)s Carrying Various Heterocycles as Arylene UnitsHiroki Saito, Shigeyuki Ukai, Shouji Iwatsuki, Takahito Itoh, and Masataka KuboCite this: Macromolecules 1995, 28, 24, 8363–8367Publication Date (Print):November 1, 1995Publication Hist…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Organics on the Photodeposition of Copper in Titanium Dioxide Aqueous SuspensionsNancy S. Foster, Alice N. Lancaster, Richard D. Noble, and Carl A. KovalCite this: Ind. Eng. Chem. Res. 1995, 34, 11, 3865–3871Publication Date (Print):November 1, 1995Publication Hist…
Crystalline, submicrometer strontium ferrite powders, including SrFeO 2.97 , SrFe 2 O 4 , Sr 2 FeO 4 , Sr 3 Fe 2 O 6.16 , and SrFe 12 O 19 , were prepared by spray pyrolysis of an aqueous solution of mixed metal nitrates. The Sr:Fe mole ratio in the precursor solution was retained in the final products. Phase‐pure mat…
The effects of non-central forces in atomistic studies of grain boundaries in molybdenum and tungsten, the transition metals with half-filled d-band, are investigated. For this purpose we have used two different types of potential which include different number of moments of the local density of electronic states when…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermotropic Liquid Crystals of Main-Chain Polyesters Having a Mesogenic 4,4'-Biphenyldicarboxylate Unit. 6. Chiral Mesophases of Polyesters with a (S)-2-Methylbutylene SpacerJunji Watanabe, Manabu Hayashi, Atushi Morita, and Masatoshi TokitaCite this: Macromolecules 1995, 2…
Interfacial structure in the isotropic phase of a liquid-crystalline material near a wall is studied by a mean-field density-functional theory. With increasing strength of the wall anchoring potential, the theory predicts a first-order transition from incomplete to complete wetting by the smectic-A phase at bulk isotr…