Materials Literature
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Lead niobates with tungsten bronze-type crystal structure have been employed as photocatalysts, and the additive effects of potassium upon the photocatalytic activity for the production of hydrogen from water and upon the photovoltaic properties have been studied. With the addition of K, the photocatalytic activity in…
Infrared hydroxyl librational bands of talc-willemseite solid solutions (Mg–Ni talcs) have been explained by analogy with those of amphiboles. Two OH librational bands at 710 and 668 cm−1 appear in talc-willemseite solid solutions, because the degeneracy of a single OH librational vibration in talc and willemseite end…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of a paramagnetic osmium-ruthenium double bondJames P. Collman and James M. GarnerCite this: J. Am. Chem. Soc. 1990, 112, 1, 166–173Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Published inissue 1 Januar…
The synthesis, characterization, electrochemical properties, and preliminary X-ray structural data of the title electron donor, a hybrid of bis(ethylenedithio)tetrathiafulvalene and bis(ethylenedioxy)tetrathiafulvalene, are presented.
A new binuclear complex [Cu2(dien)2(OH)(ClO4)3](dien = diethylenetriamine) has been synthesized and its crystal and molecular structure determined by X-ray diffraction. It crystallizes in the monoclinic space group P21, with Z= 2, a= 11.896(7), b= 9.424(3), c= 11.468(7)Å, and β= 117.97(4)°. The structure consists of d…
Mimetite Pb 5 (AsO 4 ) 3 Cl, M = 1488.21 Daltons, space group P 6 3 / m , a = 10.250(2), c = 7.454(1) Å, U = 678.214(2) Å 3 , Z = 2, D calc = 7.26 g cm −3 , λ = 1.237 Å, μ (neutron) = 2.85 cm −1 . The structure of the lead chloroarsenate mineral, mimetite, an isomorph of apatite, was refined using single crystal neutr…
An investigation is reported in which the dimensions of cellulose crystallites in cotton lint were measured by using X-ray techniques. It was found that, when the relative humidity was increased from 20 to 90%, the apparent crystallite size in the (0,0,1) direction grew larger. This result shows that there are high in…
The temperature dependence of the coercivity /sub J/H/sub c/ of Fe/sub 3/B-based Nd/sub 4/Fe/sub 77/B/sub 19/ permanent magnetic materials is analyzed. The coercivity of these melt-spun materials vanishes above the Curie temperature of the minor phase Nd/sub 2/Fe/sub 14/B. Nd/sub 4/Fe/sub 77/B/sub 19/ magnets also sho…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
Research has been conducted on the effects of the particle size distribution of a glass batch on the reaction path leading up to the first glassy phase. The research has involved DTA/TGA, X‐ray diffraction, and SEM/EDS studies of particle size effects on the reaction path. The results of the studies were compiled to g…
The fracture strength of Nd/sub 15/Fe/sub 77/B/sub 8/ and Nd/sub 14.5/Dy/sub 1.5/Nb/sub 1/Fe/sub 76/B/sub 7/ sintered magnets has been measured to be 285(40) MPa and 240(48) MPa, respectively. The fracture mechanism appears to be controlled by a critical level of tensile stress. In all the cases considered, Nd-Fe-B-ty…
Abstract
The first US case of human nanophyetiasis that does not involve ingestion of raw or undercooked salmonid fishes is reported. The patient worked with highly infected fish. Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae) occurred during the…
Diffusion coefficients of hydrogen in the palladium films of α-phase have been measured between 278 and 323 K by an electrochemical stripping method. Palladium films were deposited on iron by RF sputtering. The values of the diffusion coefficient of hydrogen obtained for the film specimens 0.68 μm and 1.36 μm in thick…
Evolution equations are derived for the density function of a suspension sedimenting above a plane. The equations are in the form of a nonlinear conservation law and the solutions might develop jump discontinuities in a finite time. The analysis starts on a local microscopic level, and the averaged equations are obtai…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of EDTA on the photocatalytic activities and flatband potentials of cadmium sulfide and cadmium selenideToshio. Uchihara, Michio. Matsumura, Junichi. Ono, and Hiroshi. TsubomuraCite this: J. Phys. Chem. 1990, 94, 1, 415–418Publication Date (Print):January 1, 1990Publi…
Article WEATHER INDUCED DEGRADATION OF LINEAR LOW DENSITY POLYETHYLENE (LLDPE): MECHANICAL PROPERTIES was published on January 1, 1990 in the journal Journal of Polymer Engineering (volume 9, issue 1).
Reaction of monolithiated-tetrathiafulvalene (TTF) has been used in the synthesis of amphiphilic TTF derivatives bearing long chains attached through carbon, silicon, sulphur, selenium, and tellurium atoms; the single crystal X-ray structure of the title compound is described.
In the preceding paper, a critical review of the state of knowledge of the bending behaviour of yarns and woven fabrics was reported. In the present one, an elastica-based computational model of plain-woven fabrics in pure bending is developed. The thread moment/curvature relation is considered to be linear. Various c…
In the preceding paper, an elastica-based computational model of the bending behaviour of plain-woven fabrics assuming linear bending behaviour of the constituent threads, together with appropriate computational techniques, was described. In the present paper, bilinear thread-bending behaviour, as proposed by Huang, i…