Materials Literature
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Both b.c.c. and icosahedral AlCuLi phases coexist following conventional ingot casting. Owing to a slight difference in their composition, they can be distinguished by a Z-contrast technique in a scanning electron microscope. Moreover, the existence of an orientation relationship between the b.c.c. and icosahedral (Al…
The genes for the two subunits of the formate dehydrogenase from Methanobacterium formicicum were cloned and their sequences determined. When expressed in Escherichia coli, two proteins were produced which had the appropriate mobility on an SDS gel for the two subunits of formate dehydrogenase and cross-reacted with a…
A theoretical investigation has been made of the interface excitations associated with the double inversion layers of semiconductor-insulator-semiconductor structure with metallized surfaces. The general dispersion relation has been derived using the local electromagnetic theory. The numerical computation is performed…
The results of both uniaxial and biaxial flexure as well as toughness testing on actual commercial ceramic capacitor samples are reported. Necessary procedural adjustments are outlined for miniaturizing the applied‐moment double‐cantilever‐beam test to accommodate these small samples. Strength and toughness testing sh…
Abstract The molecular and crystal structure of bis(4‐mercaptophenyl) sulfide ( 3 ) was determined by means of an X‐ray diffraction analysis. The crystals are monoclinic, P 2 1 / n with four molecules in the unit cell of the dimensions: a = 5,752 (1), b = 25,767 (9), c = 7,954 (2) Å and β = 95,2 (1)°. The structure wa…
Oxidative depolymerization of several polysaccharides induced by oxygen radical generating systems such as ascorbic acid-copper ion was investigated by the increases in their reducing powers and by gel-filtration. All polysaccharides used in these experiments were greatly depolymerized within 24 hr at room temperature…
Oxidation tests on spent-fuel fragments and rod segments were conducted between 250 and 360°C to relate temperature and defect size to fuel oxidation rate and time-to-cladding-splitting. Defect sizes from an equivalent circular diameter of 8 µm (the approximate size of a stress-corrosion-cracking-type breach) to 760 µ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational properties of ligand-free metal clusters: silver (Agn) (n = 3, 4, 5, 6, 7, 12, 13)Geoffrey A. Ozin and Douglas F. McIntoshCite this: J. Phys. Chem. 1986, 90, 22, 5756–5761Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Publis…
The roles of short range and long range internal stresses during nonelastic deformation have been postulated and explored using the MATMOD-4V deformation model. New microstructural variables have been introduced in MATMOD-4V which represent the effects of internal stresses upon deformation. Simulations for aluminum ha…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe active species in surface-enhanced Raman scattering of flavins on silver colloidsNam Soo. Lee, Rong Sheng. Sheng, Michael D. Morris, and Lawrence M. SchopferCite this: J. Am. Chem. Soc. 1986, 108, 20, 6179–6183Publication Date (Print):October 1, 1986Publication History P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly electroconductive tetrathiafulvalenium salts of copper halidesMichiko B. Inoue, Motomichi Inoue, Quintus Fernando, and Kenneth W. NebesnyCite this: Inorg. Chem. 1986, 25, 22, 3976–3980Publication Date (Print):October 1, 1986Publication History Published online1 May 20…
Induction motors inherently operate with nearly constant airgap flux and therefore almost constant iron losses. When the load does not require full flux, conventional voltage controllers utilize thyristors in series with the motor to reduce airgap flux by decreasing the applied voltage. Thereby, iron losses decrease a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResonance Raman frequencies and core size for low- and high-spin nickel porphyrinsDongho Kim, Y. Oliver Su, and Thomas G. SpiroCite this: Inorg. Chem. 1986, 25, 22, 3988–3993Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published iniss…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic and spectroscopic study of pyrazine-bridged iron(II) halide complexesJohn S. Haynes, John R. Sams, and Robert C. ThompsonCite this: Inorg. Chem. 1986, 25, 21, 3740–3744Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published in…
In the intermetallic compound Fe 3 Si there are two non-equivalent Fe sites, one (C) with cubic symmetry and another (T) with tetrahedral symmetry. Impurities from the first transition row show a marked tendency at thermal equilibrium to occupy one or other of the two types of sites preferentially; impurities from the…
Abstract Hardwood fibers of aspen in the form of chemithermo‐mechanical pulp (CTMP) have been used as reinforcement in linear low density polyethylene (LLDPE). The effect of composite treatment (immersion in boiling water, heat exposure at 105°C for seven days or at a temperature of −40°C) on resulting mechanical prop…
Abstract Sorption and transport of several inert gases (He, Ar, N 2 , and CH 4 ) in miscible blends of PMMA and PVF 2 are reported as a function of pressure at 35°C. For each gas, the permeabilities are independent of pressure for all blend compositions. Sorption isotherms are linear for rubbery compositions (PVF 2 ‐r…
Summary Friction and wear between casing and tool joint have been measured on full-scale equipment. The results show that the most important mud property, with respect to lubricity and protection against wear, is its ability to form a film that separates the two steel surfaces. Results from small-scale tests are shown…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectric stimulus-response behavior of liquid-crystalline viologenIwao. Tabushi, Kazuo. Yamamura, and Kazuhiko. KominamiCite this: J. Am. Chem. Soc. 1986, 108, 20, 6409–6410Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published inissu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStrong antiferromagnetic exchange in a bromide-bridged copper dimer, bis(.mu.-bromo)bis[bromobis(tetramethylene sulfoxide)copper(II)]. Structure, susceptibility, and magnetostructural correlationsC. P. Landee and R. E. GreeneyCite this: Inorg. Chem. 1986, 25, 21, 3771–3775Pu…