Materials Literature
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A general discussion of the temperature dependence of the magnetic anisotropy of single-ion origin is given based on the connection between the experimentally measured anisotropy constants and the theoretically more fundamental anisotropy coefficients. The cases of uniaxial and cubic crystal symmetry are considered in…
Abstract The computer aided design approach used in current applications of semicrystalline polyoxymethylene (POM) requires high strain‐rate mechanical data. The primary aim of this work has been to measure the room temperature modulus and tensile strength of injection molded samples of POM of different molecular weig…
A nonlinear viscoelastic model has been proposed to describe the time-dependent deformation behavior of a fiber assembly including braided fiber seals. The model is based on the standard solid model, but modified to contain three nonlinear spring and damper elements. For a fiber assembly under a compressive load, the…
The air interlacing technique is used to introduce intermittent nips to a flat filament yam so as to improve its performance in further textile processing. Observation of the interlaced flat yam nips reveals that their structure is very complicated and can be categorized into four classes: twist, braid, wrap, and enta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTwo Crystal Structures Featuring the Tetraperoxovanadate(V) Anion and a Brief Reinvestigation of Peroxovanadate Equilibria in Neutral and Basic SolutionsTae-Jin Won, Charles L. Barnes, Elmer O. Schlemper, and Richard C. ThompsonCite this: Inorg. Chem. 1995, 34, 17, 4499–4503…
Other| August 01, 1995 Experimentally determined activity-composition relations for Ca-rich scapolite in the system CaAl2Si2O8-NaAlSi3O8-CaCO3 at 7 kbar Judy Baker; Judy Baker Cambridge University, Department of Earth Sciences, Cambridge, United Kingdom Search for other works by this author on: GSW Google Scholar R. C…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEntanglement Effects in Semiflexible Polymer Solutions. 1. Zero-Shear Viscosity of Poly(n-hexyl isocyanate) SolutionsAtsuyuki Ohshima, Hiroyuki Kudo, Takahiro Sato, and Akio TeramotoCite this: Macromolecules 1995, 28, 18, 6095–6099Publication Date (Print):August 1, 1995Publi…
Evolution of He bubbles in Au has been followed with in situ electron microscopy during 400 keV Ar ion irradiation at 500 K. He bubbles were produced by implantation at 500 K of 3 keV He ions into prethinned Au samples that were then annealed to 670 K. During Ar irradiation, bubbles undergo athermal migration, coalesc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the absorption and magnetic circular dichroism spectra of low spin (S = 1/2) iron(III) phthalocyanineEdward A. Ough and Martin J. StillmanCite this: Inorg. Chem. 1995, 34, 17, 4317–4325Publication Date (Print):August 1, 1995Publication History Published online1 M…
BACKGROUND: Synchrotron radiation sources have made impressive contributions to macromolecular crystallography. The delay in development of appropriate X-ray detectors has, however, been a significant limitation to their efficient use. New technologies, based on charge-coupled devices (CCDs), provide capabilities for…
Abstract High resolution fluorine‐19 NMR spectra of polyfluoroaromatic compounds dissolved in deuterated dimethyl sulphoxide were measured and substituent shielding parameters were derived. These parameters were compared with the values observed in deuterated chloroform solutions and used to identify fluoroaromatic co…
A composite of titanium aluminide, reinforced with ZrO2 toughened Al2O3 fibers, has been produced by pressure casting. The stability of the microstructure during vacuum and air annealing was investigated by scanning and transmission electron microscopy (TEM). Processing resulted in partial dissolution of ZrO2 of the f…
Laser pyrolysis offers a means of extending solid free‐form fabrication to polymeric precursors. Laser pyrolysis of polycarbosilane (PCS) produces controlled β‐SiC shapes with nanometer grain size although properties are currently limited by high porosity. By the addition of filler powders, either inert or reactive, c…
Heat capacities and ac conductivities of AgI-based fast ion conducting glasses of AgI-${\mathrm{Ag}}_{2}$O-${\mathrm{P}}_{2}$${\mathrm{O}}_{5}$ and AgI-${\mathrm{Ag}}_{2}$O-${\mathrm{B}}_{2}$${\mathrm{O}}_{3}$ systems with different P-O or B-O network structures but with the same AgI concentration of 1.55\ifmmode\time…
Abstract Using asymptotic expansion and numerical analysis, we demonstrate how the step‐response ignition time of an automobile catalytic converter depends on the ratio of the reaction rate to the interphase heat‐transfer rate, as measured by a key Damköhler parameter χ and the degree of monolith subcooling ŋ.In the r…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTime-Resolved SERS Study of Direct Photochemical Charge Transfer between FMN and a Ag ElectrodeWei Zhang, Alberto Vivoni, John R. Lombardi, and Ronald L. BirkeCite this: J. Phys. Chem. 1995, 99, 34, 12846–12857Publication Date (Print):August 1, 1995Publication History Publis…
Abstract Le test de microactivité (MAT), utilisé pour comparer les catalyseurs de craquage, fonctionne avec un réacteur approximativement piston, isotherme et non stationnaire. Les rendements à la sortie d'un tel réacteur sont calculés dans le cas d'un modèle cinétique à familles (lumps), d'une grande expansion molair…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative Analysis of Brewster-Angle Microscope Images of Tilt Order in Langmuir Monolayer DomainsMei-Wei Tsao, Thomas M. Fischer, and Charles M. KnoblerCite this: Langmuir 1995, 11, 8, 3184–3188Publication Date (Print):August 1, 1995Publication History Published online1…
Five new pregnane glycosides, taiwanosides A [1], B [2], C [3], D [4], and E [5], together with wilfosides C1N [6], C2N [7], M1N [8], and K1N [9], were isolated from the roots of Cynanchum taiwanianum. Their structures were determined on the basis of spectroscopic and chemical evidence.
We present a complete map of the boundaries of stable plastic deformation characterized by critical stresses σ i (i = 1, 2, 3), for dilute f.c.c. CuMn polycrystals. Achieving this objective required systematic studies of tensile deformation curves as influenced by the following parameters: solute concentration (0.63 a…