Materials Literature
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Polythiophene and polybithiophene polymer films were deposited on platinum, tungsten, and glassy carbon electrodes by anodic oxidation of the monomer in ambient temperature molten salts, consisting of a mixture of aluminum chloride and 1‐methyl‐3‐ethyl‐imidazolium chloride. The formation reaction of polythiophene and…
Nitrogen (N) has been shown to exert a beneficial influence on localized corrosion resistance of austenitic stainless steels. With duplex stainless steels (SSs), N plays a dual role of controlling the austenite to ferrite ratio and increasing corrosion resistance. In addition, on rapid cooling from high temperatures,…
Abstract Kinetics of K release were investigated on a Kenansville loamy sand (loamy, siliceous, thermic Arenic Hapludults), a Rumford loamy sand (coarse‐loamy, siliceous, thermic Typic Hapludults), and a Sassafras fine sandy loam (fine‐loamy, mixed, mesic Typic Hapludults) from the Delaware Coastal Plain. Previous fie…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAmmonia-catalyzed silylation reactions of Cab-O-Sil with methoxymethylsilanesJ. P. Blitz, R. S. Shreedhara Murthy, and D. E. LeydenCite this: J. Am. Chem. Soc. 1987, 109, 23, 7141–7145Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Publ…
The elastic constants of open‐cell aluminas were measured as a function of their relative density and cell size. The density exponent was found to be in excellent agreement with previous theoretical work that considered cell strut bending as a major deformation mode. The measured constants in the elastic behavior rela…
Classical brittle failure has been observed for ceramic fibers produced by pyrolysis from three different polymer precursors. Characterization by SEM fractography methods has shown typical flaw‐mirror‐mist‐hackle morphology and such study has provided observations for understanding the fracture mechanisms. The gage le…
An equation accounting to lowest order for the effects of liquid compressibility on the radial motion of a spherical bubble is deduced from the statement of energy conservation for the liquid.
Abstract Self‐diffusion of 44 Ti is measured in β‐Ti under UHV conditions in the whole range of existence of the b.c.c. phase. The Arrhenius plot shows a strong upward curvature in agreement with previous investigations of Murdock et al. The anomalous diffusion behaviour is related to the experimentally observed softe…
Hydrogenase I (bidirectional) and hydrogenase II (uptake) of Clostridium pasteurianum have been investigated by electron paramagnetic resonance (EPR) spectroscopy, in the presence and absence of the inhibitor, CO. These hydrogenases contain both a novel type of iron-sulfur cluster (H), which is the proposed site of H2…
Abstract Octahedral Fe(III) in the crystal structures of three different smectites was reduced to Fe(II) by actively growing microorganisms indigenous to the clay. The smectites were SWa‐1 ferruginous smectite from Grant County, Washington; API 33a, Garfield Nontronite; and API 25, Upton montmorillonite. Bacterial gro…
The structures of amorphous zinc silicate and sodium zinc silicate have been studied using the molecular dynamics computer simulation technique. Results showed that bond lengths and coordination numbers for the individual atomic species fit within the range of results from a number of crystalline and glassy silicates.…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStarburst polyether dendrimersAnne Buyle Padias, H. K. Hall Jr., Donald A. Tomalia, and J. R. McConnellCite this: J. Org. Chem. 1987, 52, 24, 5305–5312Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical hydrogen evolution via singlet-state electron-transfer quenching of zinc tetra(N-methyl-4-pyridyl)porphyrin cations in a zeolite L based systemLalchan Persaud, Allen J. Bard, Alan Campion, Marye Anne Fox, Thomas E. Mallouk, Stephen E. Webber, and J. M. WhiteCit…
A technique that quantifies the in-plane flow properties of fibrous networks is pre sented. A radial flow geometry allows the simultaneous study of more than one in- plane flow direction. The shape and position of a radially advancing fluid front define directional permeabilities in the plane, which can be used to com…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered packing arrangements of spherical micelles of diblock copolymers in two and three dimensionsEdwin L. Thomas, David J. Kinning, David B. Alward, and Chris S. HenkeeCite this: Macromolecules 1987, 20, 11, 2934–2939Publication Date (Print):November 1, 1987Publication Hi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCorrosion, layer formation, and oxide reduction of passive iron in alkaline solution: a combined electrochemical and surface analytical studyS. Haupt and H. H. StrehblowCite this: Langmuir 1987, 3, 6, 873–885Publication Date (Print):November 1, 1987Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInversion of the cyclotribenzylene cone in a columnar mesophase: a potential way to ferroelectric materialsJacques Malthete and Andre ColletCite this: J. Am. Chem. Soc. 1987, 109, 24, 7544–7545Publication Date (Print):November 1, 1987Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransformation of native cellulose crystals induced by saturated steam at high temperaturesFumitaka Horii, Hiroyuki Yamamoto, Ryozo Kitamaru, Mitsuhiko Tanahashi, and Takayoshi HiguchiCite this: Macromolecules 1987, 20, 11, 2946–2949Publication Date (Print):November 1, 1987P…
An exact analytic formula for the magnetostatic interaction energy of a three-dimensional array of ferromagnetic cubes is presented. The magnetization within each cube is assumed constant but varies in direction from cube to cube. From the expressions for the interaction energy, exact formulas for the effective magnet…