Materials Literature
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The field of fluid mechanics is rapidly advancing, driven by unprecedented volumes of data from experiments, field measurements, and large-scale simulations at multiple spatiotemporal scales. Machine learning (ML) offers a wealth of techniques to extract ...Read More
The geochemistry of igneous rocks is discussed, with the primary objectives of bringing together the theories underlying the kinetics of crystallization of igneous rocks and illustrating the use of these theories in understanding experimental and observational data. The primary purpose of the chapter is to introduce c…
This paper is organized in six sections and deals with (1) the glassy transition metal alloys, their d-band structure, the d-band shifts on alloying and their relation to the alloy heat of formation (..delta..H) and the glass forming ability, (2) the glass to crystal phase transition viewed by valence band spectroscop…
The fluorescence quantum yields and lifetimes for a series of metal tetraphenylporphyrins were found to decrease with increasing spin–orbital coupling constant of the central metal ion. The triplet states gave similar effects at both 77 and 293 K, as shown by luminescence and flash photolysis studies. In particular, t…
Order in layered smectic and cholesteric liquid-crystal films is investigated. Although long-wavelength fluctuations in the layer displacements destroy translational order at any finite tem-perature, one must also account for effects of free dislocations. The combined action of layer fluctuations and dislocations is t…
Conference Discussion Conference on Macromolecules: Polymer Networks, 7th, Karlovy Vary, Czechoslovakia, 1980-09-15–1980-09-19 Published Online: 2009-01-01 Published in Print: 1981-01-01 © 2013 Walter de Gruyter GmbH, Berlin/Boston
Description Describes the most recent, useful procedures for determining the mechanisms of various corrosion phenomena, evaluating the corrosion susceptibility of various materials, and measuring rates of corrosion.
The catalytic decomposition of NO has been investigated over copper(II)-exchanged Y-type zeolites (CuNaY) at 573–823 K in a flow reactor. CuNaY exhibited an appreciable activity above 723 K and was not poisoned by either oxygen or water vapour. In the presence of the CuNaY catalyst (69% exchanged) using a contact time…
Analysis of previous calculations indicates that the observations of an irregular overtone/combination spectrum implies increasingly close local-mode near-degeneracies in the higher overtone states. This behaviour is accurately reproduced by a model of two harmonically coupled anharmonic oscillators, when the anharmon…
The thermally stable photochemically fatigue resistant title compound and its coloured form provide a photochromic system well suited for chemical actinometry in the near-u.v. and visible spectral regions. A solution of the photochromic compound in many common organic solvents can be used repeatedly and, provided the…
The crystal structures of four CrY zeolites and one CrX zeolite containing 1,2 wt% chromium have been determined by powder X-ray crystallography. The results demonstrate that the Cr3+ cations occupy preferentially the site I' of these samples after dehydration. The cations at this site are three-coordinate.The framewo…
Microstructural changes around non-metallic inclusions (sometimes called ‘butterflies') were studied using both optical and transmission electron microscopy. Large numbers of cyclic stresses cause the parent tempered martensite to disappear, along with the spherical cementite particles generally found in these through…
The conductivities of all the currently reported conducting polymers are compared to those of the classical metals. The requirements for a technologically useful conducting polymer are considered and the degree to which existing conducting polymers meet these requirements is evaluated. The mechanism of doping is discu…
Description An ASTM book on the understanding of fatigue mechanisms that cover a wide range of topics from theory and experimental studies to prediction models, test methods, and review of classic procedures.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental survey of the strain energy density function of isoprene rubber vulcanizateS. Kawabata, M. Matsuda, K. Tei, and H. KawaiCite this: Macromolecules 1981, 14, 1, 154–162Publication Date (Print):January 1, 1981Publication History Published online1 May 2002Published…
The configurational properties of long polymers in solution can be conveniently studied by using a direct renormalization method, recently introduced by the author. This method is described here in detail and applied to the two parameter model. The indices γ, ν and ω are calculated directly to second order in ε = 4 -…
The heat capacity of polyethylene from 0 K to 600 K is reviewed using measurements on 46 samples reported in the literature. The crystallinity dependence is evaluated critically and a set of recommended data for completely crystalline and amorphous polyethylene is derived. Entropy, enthalpy, and Gibbs energy functions…
Description Extensive information on current research results dealing with the effects of radiation on light-water-reactor pressure vessels, fast breeder reactor core materials, material for first-walls in fusion systems, and solid radioactive waste.
When the surface of a solid is bombarded with charged particles of sufficient kinetic energy, emission of electrons by the solid may be observed. This phenomenon of secondary electron emission was discovered by Austin and Starke in 1902 in a study of the reflection of electrons by metals; they observed that under cert…
The first reported solid silaethene, m.p. 95 °C, stable at room temperature under argon, but highly reactive in air has been isolated and characterized by i.r., n.m.r. and mass spectrometry.