Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational spectroscopic study of the interlamellar kaolinite-dimethyl sulfoxide complexClifford T. Johnston, Garrison Sposito, David F. Bocian, and Robert R. BirgeCite this: J. Phys. Chem. 1984, 88, 24, 5959–5964Publication Date (Print):November 1, 1984Publication History…
This review describes the utilisation of synchrotron X-radiation (SR) in protein crystallography. For the general reader a brief discussion is given of the basics of protein structure analysis including an outline of the problems of sample radiation damage, the inherent weakness of individual reflections and the large…
Complex anisotropic media can generally be described by a6 \times 6macroscopic constitutive tensor\hat{C}. Using\hat{C}properties, a reaction integral formula is derived from which an anisotropic reaction theorem (modified reciprocity theorem) is developed. Reduction of the\hat{C}medium into a reciprocal medium is dis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoluminescence of zinc oxide powder as a probe of electron-hole surface processesMasakazu Anpo and Yutaka KubokawaCite this: J. Phys. Chem. 1984, 88, 23, 5556–5560Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 No…
The fatigue behaviour of Ti-6Al-4V (extra low interstital) alloy coated with Ti-6Al-4V powder was investigated using rotating bending fatigue testing. It was found that the high cycle fatigue strength of porous coated specimens exhibited a substantial decrease compared to uncoated specimens of the same microstructure.…
Chemically vapor deposited (CVD) silicon carbide was subjected to constant compressive stresses (110 to 220 MN/m 2 ) at high temperatures (1848 to 2023 K) in order to determine the controlling steady‐state creep mechanisms under these conditions. An extensive TEM study was also conducted to facilitate this determinati…
The organic matrix is thought to play an important role in controlling crystal growth during the formation of skeletal hard parts. The structural organization of the matrix macromolecular constituents can provide a key to understanding the nature of the control processes. Although the data are limited, both vertebrate…
X-ray studies on human insulins prepared by semisynthetic and biosynthetic methods have recently been undertaken. Human insulin differs from porcine insulin only at the COOH terminus of the B-chain. The present study reports the crystal structure of 4-zinc human insulin, which is used clinically as a slow-acting prepa…
The cylinder model, used previously to analyze the viscous sintering of flame hydrolysis preforms and gels, is shown to be consistent with other models of early‐ and late‐stage sintering. The model is then applied to a bimodal pore‐size distribution in which the different shrinkage rates of small and large pores produ…
The temperature dependence of electrical conductivities In WO3-x (O ≤ x ≤ 0·28) has been investigated. These compounds show metallic behaviour for x < 0·10 and non-metallic behaviour for x < 0·10. An Anderson transition takes place for the composition WO2·90 with complete polaronic transport in the non-metallic phase.…
A theoretical evaluation for Peek's law which yields the corona onset gradient is made in air for positive wire/cylinder and positive point/plane geometries. The physical and geometrical parameters used in Meek's criterion take into account the variation of apparent ionization coefficient λ1of air with humidity, press…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrisubstituted heteropolytungstates as soluble metal oxide analogs. 1. The preparation, characterization, and reactions of organic solvent soluble forms of the silicon-niobium heteropolytungstates Si2W18Nb6O778-, SiW9Nb3O407-, and the SiW9Nb3O407- supported organometallic co…
ABSTRACT A bilayer film consisting of stearic and palmitic acids as one layer and hydroxypropyl methylcellulose as the other was prepared. The permeability of this film to water vapor was tested under a variety of conditions involving film composition, temperature and relative humidity. This film exhibited permeabilit…
ABSTRACT Edible films composed of a water soluble, carbohydrate layer (hydroxypropyl methylcellulose) and various kinds of lipid layers were tested for resistance to water vapor permeability. Films were tested at 25°C and a relative humidity differential of 85%. Films containing solid lipids, such as beeswax, paraffin…
While the importance of calcareous deposits to the effectiveness and efficiency of marine cathodic protection is generally recognized, there has been relatively little research directed toward rationalizing the structure and properties of deposits and the role of influential variables in deposit formation. This paper…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign of .mu.-oxalato copper(II) binuclear complexes exhibiting expected magnetic propertiesMiguel Julve, Michel Verdaguer, Alain Gleizes, Michele Philoche-Levisalles, and Olivier KahnCite this: Inorg. Chem. 1984, 23, 23, 3808–3818Publication Date (Print):November 1, 1984Pu…
"Light Scattering in Solids IV." Optica Acta: International Journal of Optics, 31(11), p. 1210
The effectiveness of polymeric damping materials in controlling resonant vibration problems has been established through many successful applications. The area of these applications range from aircraft structures to jet engine structures. An effort is underway to develop a viscoelastic damping design guide for use by…
The thermodynamics of stressed crystals that can change phase and composition is examined with particular attention to hypotheses used and approximations made, Bulk and surface conditions are obtained and for each of them practical expressions are given in terms of experimentally measurable quantities.The concept of o…
Electron microscopic morphometric techniques were used to measure accurately the cytoplasm and frustule volumes of 12 naturally occurring planktonic diatoms in the Laurentian Great Lakes. In addition, cytoplasm volumes were measured in 6 other algal species. Estimates of carbon content were then made by converting mea…