Materials Literature
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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.
This book describes the major design features of fast breeder reactors and the methods used for their design and analysis. The foremost objective of this book is to fulfill the need for a textbook on Fast Breeder Reactor (FBR) technology at the graduate level or the advanced undergraduate level. It is assumed that the…
The gold(I) complexes AuCl(PR3)(PR3= PPh3, PMePh2, and PMe2Ph) react with Ti(η-C7H8)2 to form a variety of cationic gold cluster complexes; single-crystal X-ray analysis of one of these, [Au13-(PMe2Ph)10Cl2](PF6)3, has confirmed a centred icosahedral geometry for the cluster, in agreement with an earlier theoretical p…
The initial‐, intermediate‐, and final‐stage sintering of fine crystallite yttria‐stabilized zirconia was studied. Experiments were conducted on powder lots of differing agglomerate size and one specially prepared agglomerate‐free powder. Initial‐stage sintering kinetics were compared with a sintering study on larger…
The phase behaviour of aqueous solutions of poly(ethylene oxide), PEO, is analysed by means of a structural model of the system and a simple statistical-mechanical model based thereupon. The intention is to elucidate the structural questions involved in the water–PEO coupling and to gain some insight in possible conse…
A fluorescent reagent, N-(1-pyrenyl)iodoacetamide, was conjugated to rabbit skeletal muscle actin at the site of the most reactive sulfhydryl group, and fluorescence characteristics (excitation and emission spectra, quantum yields, lifetimes) of the conjugate were investigated. Associated with polymerization of labell…
Abstract The group theoretical methods by which the symmetries of normal modes in crystals may be determined are outlined, and a series of tables are presented to facilitate rapid determination of the selection rules for vibrational transitions. Emphasis is placed on the method of nuclear site group analysis in which…
The results of studies on the extracomplexes of metalloporphyrins namely the conditions of their formation, structure, spectroscopy, kinetics, and thermodynamics, are considered. The bibliography includes 245 references.
Crystals of yttrium aluminium garnet (YAG) emit a broad luminescent band peaking at 270 nm under X-irradiation at 4K. Exploitation of the magneto-optical properties of this emission makes possible measurement of EPR spectra of an excited state of the emitting centres. It is suggested that at least three different cent…
Conduction electrons in the low-temperature phase of crystalline WO 3-x (x>or approximately=0.0001) are found to be paired diamagnetically, forming bipolarons due to joint lattice distortion. They can be dissociated with light in a broad band of wavelengths peaked at 1.1 eV, as monitored by the appearance of W 5+ E…