Materials Literature
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The construction of the γ surface requires the application of mechanical constraints in order that the energy of non-equilibrium fault configurations can be calculated. The choice of mechanical constraints is not unique and it is shown that γ surfaces constructed using different schemes can differ significantly. The m…
The underpaint corrosion of zinc‐coated steel exposed to chloride containing solutions was studied by Raman spectroscopy; the selection of an appropriate resin (without fluorescence) allows us to perform the analysis directly through the paint. The influence of a conversion layer (chromatation or phosphatation) was in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR and Electron Microscopic Investigation of Polymerized Coatings Prepared from Methacrylate-Functionalized Silica in an Acrylic Monomer MatrixLarry N. Lewis, Thomas A. Early, Michael Larsen, Elizabeth A. Williams, and James C. GrandeCite this: Chem. Mater. 1995, 7, 7, 1369…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTParticle-Liquid Mass Transfer in Three-Phase Mechanically Agitated Contactors: Power Law FluidsKamlesh B. Kushalkar and V. G. PangarkarCite this: Ind. Eng. Chem. Res. 1995, 34, 7, 2485–2492Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Pub…
The quasi-TEM approximation for multiconductor lines embedded in inhomogeneous bi-isotropic media is developed. It is shown that in the quasi-TEM limit a multiconductor line in bi-isotropic media can be represented by a coupled set of nonreciprocal and nonsymmetric circuit transmission lines. The effect on the circuit…
Eight species of halophilic Archaea were tested for the presence of isocitrate lyase activity. High activities (up to 100 nmol min−1 mg protein−1) were detected in Haloferax mediterranei and Haloferax volcanii when grown in medium containing acetate as the principal carbon source. Little activity was found in represen…
Two novel glass compositions aimed at improving the quantum efficiency and gain of the 1.3 mu m praseodymium-doped fibre amplifier (PDFA) were developed and investigated. The two glasses were compositions based on cadmium halide and gallium fluoride. Both bulk glass samples and core-clad fibre structures were fabricat…
D. J. Whittaker, G. S. Smith, R. C. Gardner; Three cDNAs Encoding S-Adenosyl-L-Methionine Synthetase from Actinidia chinensis, Plant Physiology, Volume 108
We investigate the dependence of the average interface field on the inversion and depletion charge density through the use of a zero-temperature Green’s function formalism for the evaluation of the broadening of the electronic states and conductivity. Various models for the surface-roughness autocovariance function ex…
Spectroscopic absorption and emission measurements have been used to study laser deposition of YBCO films. They show that >95% of the monatomic Y and Ba initially ablated from the target undergo gas-phase chemical combination before film deposition. In contrast, considerable monatomic Cu persists into the deposition r…
A transition matrix method is commonly used to deal with the problems of either plane-wave scattering from or the Green's function of a generalized anisotropic medium. This method, although rigorous analytically, introduces numerical breakdown, when the layers are electrically thick and the waves are evanescent. A var…
In our previous paper [Phys. Rev. B 44, 2046 (1991)], results of high-resolution transmission electron microscopy (HRTEM) at each stage of the complicated hysteretic phase transformation of 1T-${\mathrm{TaS}}_{2}$ are described. Here, on warming from the commensurate (C) phase to the incommensurate (IC) phase, the tri…
A lattice-dynamics approach to acoustic emission during plastic deformation of crystals is proposed. First the dynamics of a dislocation interacting with transverse acoustic waves is investigated on the basis of a microscopic Frenkel–Kontorova model in which the rigidity of the substrate is relaxed. It is shown that t…
The functionalization of amphiphilic quaternary ammonium salts with properly chosen interacting endgroups constitutes an easy way to produce novel liquid crystal-line materials with diversified physical properties.1 Additional cyano endgroups introduce dipole-dipole interactions susceptible to strongly affect the liqu…
The preparation of 4′-alkyl- and 4′-alkoxy-4-cyano-3-fluorobiphenyls by four different procedures is described and discussed; the best method involves palladium(0)-catalysed coupling of arylboronic acids and 4-bromo-(or 4-iodo-)-2-fluorobenzonitrile. The effects on transition temperatures of fluoro substitution ortho…
An efficient algorithm is derived for generating all possible seamless carbon nanotube structure models. This makes use of multijugate helical lattices, a concept borrowed from some biological structures. Principles for helicity and structure analysis of carbon nanotubes using high-resolution electron microscopy and i…
The crystal quality of new nonlinear-optical/ferroelectric crystal LaBGeO5 was examined by measuring wavelength dependence of the second harmonic intensity under the phase matching condition at λ = 1.314 μm. The effective interaction length I eff was determined as 1.28 mm, which was 73% of the actual length. The ferro…
β-NiAl thin films were prepared by physical vapor deposition (PVD) either on thin PVD Al2O3 films on Si substrates or on sapphire single crystals. These samples were characterized by x-ray diffraction and electron spectroscopies [Auger electron spectroscopy and x-ray photoelectron spectroscopy (XPS)]. Crystalline film…
Radiation vulcanization of raw EPDM in the presence of polyfunctional monomers; diallylamine, diallylsulphide, ethylene glycol dimethacrylate, NN-methylene bis-acrylamide, triallyl cyanurate, trimethyloyl propane trimethacrylate and tetramethylol methane tetraacrylate has been carried out. The efficiency of the monome…
V and MgO films of various thicknesses were deposited on the (001)MgO surface of a MgO substrate by molecular beam epitaxy to prepare two different interfaces: V[sbnd]MgO and MgO[sbnd]V. Cross-sectional specimens were prepared from … V/MgO/V/MgO multilayers and the V[sbnd]MgO and MgO[sbnd]V interfaces were investigate…