Materials Literature
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Abstract Molecular structural changes of a vinyl functional silane coupling agent on E ‐glass fibers, induced during the immersion test in hot water, have been studied using Fourier transform infrared spectroscopy. The amount of the coupling agent on the glass fibers is reduced by hydrolytic degradation. Silanol group…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOctakis(alkylthio)tetraazaporphyrinsCharles J. Schramm and Brian M. HoffmanCite this: Inorg. Chem. 1980, 19, 2, 383–385Publication Date (Print):February 1, 1980Publication History Published online1 May 2002Published inissue 1 February 1980https://pubs.acs.org/doi/10.1021/ic5…
1. The skin of the American eel Anguilla rostrata is composed largely of a crossed-helical array of fibers, believed to be collagen, that are oriented at an angle of 45° with the long axis of the fish. Uniaxial and biaxial tension testing of eel skin was used to assess the role of the collagen fibers in the locomotor…
The M\"ossbauer effect has been used to study hydrogen absorption in Dy, Dy${\mathrm{Ni}}_{2}$, Dy${\mathrm{Co}}_{2}$, Dy${\mathrm{Mn}}_{2}$, and Dy${\mathrm{Fe}}_{2}$. Isomer shifts in the hydrides of the intermetallics are similar to those found in the dysprosium hydrides. Measurements at 4.2 K for the hydrides of t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn explanation of unusual properties of spin-crossover ferric complexesMuin S. Haddad, Wayne D. Federer, Michael W. Lynch, and David N. HendricksonCite this: J. Am. Chem. Soc. 1980, 102, 4, 1468–1470Publication Date (Print):February 1, 1980Publication History Published onlin…
The correlation between electrical and mechanical losses in ferroelectric ceramics has been investigated theoretically and experimentally. The theoretical derivation is based on the assumption that both loss types are induced by 90° domain walls moving under the influence of electrical or mechanical fields. A proporti…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical spectra of sonoluminescence from transient and stable cavitation in water saturated with various gasesC. Sehgal, R. G. Sutherland, and R. E. VerrallCite this: J. Phys. Chem. 1980, 84, 4, 388–395Publication Date (Print):February 1, 1980Publication History Published on…
We report the determination of the impact ionization rates for holes and electrons in Ga0.47In0.53As with the electric field oriented in the 〈100〉 direction. Our measurements show that the ionization rate for electrons α is greater than that for holes (β) by about a factor of 2 over electric fields ranging from 2.0×10…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of porphyrin ferryl (FeO2+) complexes through the addition of nitrogen bases to peroxo-bridged iron(III) porphyrinsDer-Hang Chin, Alan L. Balch, and Gerd N. La MarCite this: J. Am. Chem. Soc. 1980, 102, 4, 1446–1448Publication Date (Print):February 1, 1980Publicati…
This paper describes an investigation into the growth of electrical trees in polyethylene by the simultaneous measurement of light intensity and partial discharges. The emission of light has been studied using an image intensifier. A comparison of the results obtained for different types of trees has been made. The de…
Abstract Neue Farbstoffe wurden synthetisiert, die ein ionenselektives Kronenethersystem enthalten, bei dessen Komplexierung mit Kationen der Chromophor im Grund‐ und angeregten Zustand elektronisch unterschiedlich beeinflußt wird. Verschiedene Ionentypen rufen verschiedene Farbänderungen hervor. Außer cyclischen Kron…
Abstract Rheological studies were carried out on concentrated m ‐cresol solutions of two helical synthetic polypeptides; poly‐γ‐benzyl‐ L ‐glutamate (PBLG; molecular weight, 150,000) and poly‐ϵ‐carbobenzyloxy‐ L ‐lysine (PCBZL; molecular weight, 200,000). Steady shear measurements were made over a range of 0.01–16,000…
Abstract The spectra of thermally stimulated luminescence caused by the recombination of mobile V K centres, V F centres, and X centre decay products with F centres are studied at temperatures from 80 to 500 K for KCl, KCl:Sr, KBr, and KBr:Sr crystals X‐irradiated at 80 or 295 K. The recombination processes occurring…
A BASrc program package has been developed for the quantitative interpretation of digitally recorded X-ray ditrractometric data of bauxites. It corrects for background, searches the peaks, and calculates the integrated intensities. Information stored in the phase library permits the identification of the components an…
It is shown that in FeTiD 0.057 ( alpha phase), deuterium occupies octahedral sites with iron atoms as nearest neighbours.
Abstract Intensities of a 1 Δ g ← X 3 ∑ g − and b 1 ∑ g + ← X 3 ∑ g − transitions in molecular oxygen have been calculated on the basis of the INDO method taking into account spin‐orbit coupling by perturbation theory. The transitions are magnetic dipole in nature. The first of them ( a − X ) steals its intensity from…
<div class="htmlview paragraph">Combustion and gasification characteristics of deposits from diesel exhaust were investigated. Properties which may influence soot reactivity, such as morphology, specific surface area, organic adsorbate, and occlusions of inorganic origin were characterized. Effects of temperatur…
Abstract The thermal decomposition of HMX has been investigated using thermoanalytical techniques and infrared spectroscopic study at both above and below its melting point. The weight loss phenomenon that occurs as the temperature is elevated at a constant heating rate has been clearly separated into four elementary…
As a means of assessing the extent to which deformation of isolated walls relates to in vivo cell expansion, the directionality of wall mechanical properties was examined in Nitella. Measurements were made of plastic and elastic deformation and creep under both uniaxial and multiaxial stress conditions. Walls of diffe…
Experimental determinations of the mineral/liquid partition coefficients of REE (La, Sm, Eu, Gd, Tb, Yb and Lu), Sc and Sr are reported for the minerals perovskite, spinel and melilite in synthetic systems. Perovskite concentrates light REE with respect to the residual liquid but shows no preference for heavy REE. Spi…