Materials Literature
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Abstract The attenuation parameter (AP), which quantitatively describes the influence of elastic electron scattering on the electron spectroscopies, has been calculated for 45 elements (Be, C, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te,…
Using molecular-dynamics computer simulation, we study the dynamical behavior of the isotropic and nematic phases of highly anisotropic molecular fluids. The interactions are modeled by means of the Gay-Berne potential with anisotropy parameters \ensuremath{\kappa}=3 and \ensuremath{\kappa}'=5. The linear-velocity aut…
Formation of giant‐grain copper thin films on SiO 2 by a low‐kinetic energy particle process followed by thermal annealing has been investigated. When Cu films are grown on SiO 2 by the process under a sufficient amount of energy deposition, they exhibit almost perfect crystal orientation conversion from Cu(111) to Cu…
Nuclear magnetic resonance (NMR) relaxation of quadrupolar nuclei is introduced as a new method for determining micelle size and nematic order in lyotropic nematic mesophases from the dependence of the spin relaxation rates on molecular diffusion over the curved micelle surface. The approach is illustrated by an exper…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThree-membered rings of carbon, silicon, and germanium. An analysis of thermodynamic stability to fragmentationDavid A. Horner, Roger S. Grev, and Henry F. Schaefer IIICite this: J. Am. Chem. Soc. 1992, 114, 6, 2093–2098Publication Date (Print):March 1, 1992Publication Histo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAluminum-27 nuclear magnetic resonance study of aluminas and their surfacesB. A. Huggins and Paul D. EllisCite this: J. Am. Chem. Soc. 1992, 114, 6, 2098–2108Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992htt…
A model of rabbit muscle phosphoglucomutase was refined at 2.7-A resolution by using two heavy atom derivatives for initial phasing and standard refinement procedures, including molecular replacement averaging about a 2-fold axis and dynamic simulation: final R-factor, 0.223 (no solvent modeling); RMS deviation from s…
The outlines of a comprehensive study on crystallization of polyethylene under elevated pressure (P) are being reported. Through in situ viewing of formation and growth of the lamellar crystals, complemented by x-ray diffraction information, it could be established that within the range of experiments (P = 1.8–5.5 kba…
A single histidine residue has been placed at either the N-terminus or the C-terminus of each of the two alpha-helices of barnase. The pKa of that histidine residue in each of the four mutants has been determined by 1H NMR. The pKas of the two residues at the C-terminus are, on average, 0.5 unit higher, and those of t…
BACKGROUND: Gene transfer into the arterial wall may provide a novel therapeutic strategy for the treatment of coronary artery restenosis. Previously described methods for gene transfer into the arterial wall require total vessel occlusion for 30 minutes. We sought to develop a protocol for gene transfer within a more…
The pretilt angles generated in nematic liquid crystal (5CB) media that are disposed in sandwich type cells and oriented by using various orientation films are shown to depend both on the nature of the orientation films and the rubbing strengths in the following way: first, in a cell with alkyl branched polyimide (PI…
The hydrolysis of uranium oxycarbide (UCO) was studied by injecting water vapor into a fuel element containing a known number of high‐temperature, gas‐cooled reactor (HTGR) coated particles with exposed fuel kernels. The experiments were conducted in the High Flux Isotope Reactor (HFIR) at temperatures between 700° an…
The volatilities of simulated, high‐level nuclear waste glasses have been measured using thermogravimetric analysis (TGA). These volatilities were measured in the region of the glass transition temperature ( T g ) of the waste glasses, which is between 450° and 500°C. These data were obtained because the Waste Accepta…
Abstract Soils derived from granite rocks occupy 66% of the land in Korea. Two soils from the southern part of Korea formed on metamorphosed granite under forest vegetation, containing high amounts of ferruginous chlorite, were studied to evaluate weathering and formation of clay minerals. The soils are deeply weather…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of the silicon(111) (.sqroot.3 .times. .sqroot.3)R30.degree.-boron surface reconstruction by simulated annealingYat Ting Wong, Boris Schubert, and Roald HoffmannCite this: J. Am. Chem. Soc. 1992, 114, 7, 2367–2371Publication Date (Print):March 1, 1992Publicatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConcentrated emulsions. 2. Effect of the interdroplet film thickness on droplet size and distortion in mono- and bidisperse face centered cubic packingsDoble Mukesh, Ashok K. Das, and Pushpito K. GhoshCite this: Langmuir 1992, 8, 3, 807–814Publication Date (Print):March 1, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransient responses of natural convection heat transfer with liquid gallium under an external magnetic field in either the x, y, or z directionKazuto Okada and Hiroyuki OzoeCite this: Ind. Eng. Chem. Res. 1992, 31, 3, 700–706Publication Date (Print):March 1, 1992Publication…
Abstract A range of bismaleimide resins of differing network structure was produced both by varying the ratios of N,N′‐bismaleimido‐4,4′‐diphenylmethane (BMI) and methylene dianiline (MDA), and also by the use of different thermal processing cycles. Characterization of the resins by a variety of mechanical, physical,…
A simplified model of a small one- and three-phase transformer for simulation of the space-distribution of the leakage field outside the magnetic core is presented. The transformer windings with rectangular cross-section are enclosed in a parallelepiped area of calculation. The authors use the finite difference method…
In order to discuss the long-term reliability and safety of zirconium-cobalt (ZrCo) alloy for tritium (T) use, the release behavior of decay helium (3He) from ZrCo tritide has been investigated for one and a half years with a radio-gaschromatograph. The results show that the release fractions of the total decay 3He in…