Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSemiempirical calculations of hyperpolarizabilities for donor-acceptor molecules: comparison to experimentNobuyuki Matsuzawa and David A. DixonCite this: J. Phys. Chem. 1992, 96, 15, 6232–6241Publication Date (Print):July 1, 1992Publication History Published online1 May 2002…
Singlet oxygen (1O2) can react with cholesterol (Ch) to give three possible ene-addition hydroperoxides: 3 beta-hydroxy-5 alpha-cholest-6-ene-5-hydroperoxide (5 alpha-OOH), 3 beta-hydroxycholest-4-ene-6 alpha-hydroperoxide (6 alpha-OOH), and 3 beta-hydroxycholest-4-ene-6 beta-hydroperoxide (6 beta-OOH). The rates of d…
Spinodal decomposition of off-critical mixtures of poly(styrene–random–butadiene) copolymer with polyisoprene or polybutadiene was investigated as a function of the composition w of the mixtures and of the phase separation temperature T by time-resolved light scattering. The coarsening behavior of the mixtures was cha…
In this investigation quantitative texture analysis, including calculation of the orientation distribution function, is used to demonstrate the degree of preferred orientation in β ‐Si 3 N 4 which has been hot‐pressed or hot‐worked. The results indicate that plane strain compression can produce strong textures. The te…
Restriction mapping and sequence analysis of cosmid clones revealed a cluster of three cellobiohydrolase genes in Phanerochaete chrysosporium. P. chrysosporium cbh1-1 and cbh1-2 are separated by only 750 bp and are located approximately 14 kb upstream from a cellulase gene previously cloned from P. chrysosporium (P. S…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic studies of the molecular relaxations and interactions in microcomposites prepared by in-situ polymerization of silicon alkoxidesJohn J. Fitzgerald, Christine J. T. Landry, and John M. PochanCite this: Macromolecules 1992, 25, 14, 3715–3722Publication Date (Print):Jul…
A constant (N,P,T) statistical method is developed for a finite-size system. A scaling variable a is introduced to describe the size of the system following the method used for the bulk system. The histograms of the Boltzmann distribution function f(${\mathit{E}}_{\mathit{c}}$,V;T,P) (${\mathit{E}}_{\mathit{c}}$ and V…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMNDO study of boron-nitrogen analogs of buckminsterfullereneXinfu Xia, Daniel A. Jelski, James R. Bowser, and Thomas F. GeorgeCite this: J. Am. Chem. Soc. 1992, 114, 16, 6493–6496Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published ini…
Regulation of the procollagen type I (Pro alpha 1) gene in cultured Ito cells by diverse cytokines was studied. Specifically, we have examined the effect of interleukin-1 beta (IL-1 beta), tumor necrosis factor alpha (TNF alpha), and transforming growth factor beta (TGF beta) on collagen biosynthesis, levels of Pro al…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMc determination and molecular dynamics in crosslinked 1,4-cis-polybutadiene: a comparison of transversal proton and deuterium NMR relaxationG. Simon, K. Baumann, and W. GronskiCite this: Macromolecules 1992, 25, 14, 3624–3628Publication Date (Print):July 1, 1992Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGround spin state variability in manganese oxo aggregates. Demonstration of an S = 3/2 ground state for [Mn3O4(OH)(bpea)3](ClO4)3Samudranil Pal, Michael K. Chan, and William H. ArmstrongCite this: J. Am. Chem. Soc. 1992, 114, 16, 6398–6406Publication Date (Print):July 1, 199…
The Cu(II) sites of azurins, the blue single copper proteins, isolated from Pseudomonas aeruginosa and Alcaligenes spp. (Iwasaki) are reduced by CO2- radicals, produced by pulse radiolysis, in two distinct reaction steps: (i) a fast bimolecular phase, at the rates (5.0 +/- 0.8) x 10(8) M-1.s-1 (P. aeruginosa) and (6.0…
Porous layers formed in n-type silicon are characterized by pores of square cross section oriented perpendicular to the (100) plane. The pore walls are defined by the {011} planes in the [100] zone with secondary pores propagating from the main pores in the 〈010〉 and 〈001〉 directions. The pores are located in an array…
Atomic force microscopy (AFM) was used to image fibrillar and monomeric type I collagen. Protocols were developed to produce samples of air dried fibrillar and monomeric collagen suitable for AFM analysis. Pepsin-extracted, type I bovine skin collagen was polymerized on mica substrates in pH 7.4 phosphate-buffered sal…
Abstract Ion exchange to fixed charge sites and surface complexation to hydroxylated sites are recognized to affect Cd aqueous concentrations in soil; however, the individual contribution of these reactions to Cd sorption in mineralogically complex material has not been documented. The objective of this study was to i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInsertion of poly(p-phenylenevinylene) in layered MoO3L. F. Nazar, Z. Zhang, and D. ZinkwegCite this: J. Am. Chem. Soc. 1992, 114, 15, 6239–6240Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https://pubs.acs.or…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOlefin polymerization by vanadium-containing silsesquioxanes: synthesis of a dialkyl-oxo-vanadium(V) complex that initiates ethylene polymerizationFrank J. Feher and Rusty L. BlanskiCite this: J. Am. Chem. Soc. 1992, 114, 14, 5886–5887Publication Date (Print):July 1, 1992Pub…
R ‐curves for two in‐situ reinforced silicon nitrides A and B of nominally the same composition are characterized using the Griffith equation and indentation fracture mechanics. These R ‐curves are calibrated against fine‐grained silicon nitrides which have a known chevron‐notch (long‐crack) toughness and with a nearl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTESR of the cationic triradical of 1,3,5-tris(diphenylamino)benzeneKazunari Yoshizawa, Akihisa Chano, Akihiro Ito, Kazuyoshi Tanaka, Tokio Yamabe, Hideo Fujita, Jun Yamauchi, and Motoo ShiroCite this: J. Am. Chem. Soc. 1992, 114, 15, 5994–5998Publication Date (Print):July 1,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign of a homonuclear ferromagnetic chain: structures and magnetic properties of oxalato-bridged copper(II) complexes with one-dimensional structuresHiroki Oshio and Umpei NagashimaCite this: Inorg. Chem. 1992, 31, 15, 3295–3301Publication Date (Print):July 1, 1992Publicat…