Materials Literature
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The effects of co-existing atomic and magnetic clustering on electrical resistivity are considered. It is shown that in Cu-Ni alloys such clustering produces competing effects and that while atomic clustering dominates the behaviour in alloys containing more than about 25% Ni, the magnetic clustering effects are predo…
Under a LOCA transient in LWRs, ruptured Zircaloy clad tubes would be oxidized at the inner surface as well as outer surface by steam flowing in reactor core. In order to determine whether the inner-surface oxidation influences mechanical properties of clad tubes during the reflood stage of a LOCA, the ring compressio…
Pyridinoline is a non-reducible crosslink of collagen. The changes in the content of this crosslink during in vitro aging of bone collagen were studied. The pyridinoline content of bone collagen of 6-week-old chick was very low. When the collagen was incubated with physiological saline in air at 37 degrees C, the pyri…
The T,E-diagram of three ferroelectric phases of BaTiO3 crystals in the temperature range from 0°C to −170°C has been experimentally determined up to 600 kV/cm.
The influence of crystallinity and stereoregularity on the infrared (IR) spectrum of atactic PVC in the solid state has been studied by many researchers [1-12]. Although the molecules in commercial PVC consist of both syndiotactic and isotactic sequences, the bulk polymer is not highly stereoregular, having approximat…
The results of magnetic measurements performed on (Gd x Y 1-x )Fe 3 compounds, in the temperature range 4.2K-1300K, are reported. The YFe 3 compound is ferromagnetic. Replacing Y by Gd, the iron magnetisation is oriented antiparallel to that of the gadolinium. The two magnetisations compensate at the composition x app…
Abstract Core electron binding energies E B with respect to the vacuum level and their chemical shifts are calculated for the least bound core levels of cations and anions of cubic A N B 8− N semiconductors. Starting from the HF‐binding energy of the free atom absolute values of E B are obtained by adding core level s…
Abstract A hydrate of cellulose II can be formed by swelling Fortisan fibers in hydrazine and then washing in water. The hydrate is stable at 93% relative humidity and has a monoclinic unit cell with dimensions a = 9.02 Å, b = 9.63 Å, c = 10.34 Å, and γ = 116.0°; the space group is P 2 1 . The unit cell contains disac…
MSbO4, (M = Cr, Fe) are tetragonal, rutile-type compounds, P42/mnm (No. 136); Z = 1. M and Sb are randomly distributed in 2(a) positions and O in 4(f). For CrSbO4, Dm = 5.31, Dx = 5.35 Mg m−1, a = 4.5899 (2), c = 3.0525 (2) Å, U = 64.307 (8) Å3, x = 0.318, R = 4.6; Cr and Sb are coordinated with two O atoms at 2.064 a…
A PVC plastisol is a suspension of fine particles of poly(viny1chloride) in a plasticizer [1]. The particle size varies typically in the range from 15 to 0.2 um, but it may contain larger and smaller particles also. The sizes in the order of 1 urn and smaller are the primary particles produced by polymerization. The l…
Observations of cleavage fracture in some fcc materials are briefly described. The results suggest that cleavage fracture is not an ‘atomically brittle’ process but occurs by alternate slip at crack tips in conjunction with formation of very small voids ahead of cracks. It is proposed that environmentally induced clea…
The electronic transport properties of chalcogenide glasses of the type Ge-Se and Ge-Te to which foreign elements such as Bi, As, Cu and In are added, were investigated. Glasses of the (GeSe3.5)100-xBix system show a transition from p to n-type conduction at x ≈ 7 at. % Bi as evidenced by thermo-power measurements. Th…
Abstract A study was made on the stress relaxation behavior at 25°C of poly(methyl methacrylate) in uniaxial tension as a function of physical aging at both room temperature and 60°C. Test specimens were compression molded at 165°C, then quenched to room temperature and allowed to age for up to 30 days prior to testin…
A soft-mode has been observed spectroscopically in TSCC1-xBx. The Tc-values determined spectroscopically agree with the dielectric values. Hard core modes with anomalous temperature dependence close to Tc have been found and are attributed to the COO−-(carboxyl-) group of the sarcosine molecule.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew singlets in the phthalocyaninesTzer-Hsiang Huang, Klaus E. Rieckhoff, and Eva M. VoigtCite this: J. Phys. Chem. 1981, 85, 22, 3322–3326Publication Date (Print):October 1, 1981Publication History Published online1 May 2002Published inissue 1 October 1981https://pubs.acs.o…
The metabolic pathways utilized by an obligately anaerobic marine spirochete (strain MA-2) to ferment branched-chain amino acids were studied. The spirochete catabolized l-leucine to isovaleric acid, l-isoleucine to 2-methylbutyric acid, and l-valine to isobutyric acid, with accompanying CO(2) production in each ferme…
The results of recent investigations of the crystal structure of BaTiO3 in the cubic, tetragonal, and rhombohedral phase are in accordance with an order-disorder-model, described either by ‘split-atoms’ or a double well potential. The model yields quantitatively the temperature dependence and the anisotropy of the the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and magnetic properties of two two-dimensional copper oxalates: bis(benzylammonium) bis(oxalato)cuprate(II) and propylenediammonium bis(oxalato)cuprate(II)D. R. Bloomquist, J. J. Hansen, C. P. Landee, R. D. Willett, and R. BuderCite this: Inorg. Chem. 1981, 20, 10,…
Specific heat measurements of blends of phthalate (DidP), phosphate (TCP), azelate (DOZ), plasticizers, and commercial PVC resins have revealed the presence of two distinct glassy phases. The Tg of the lower-temperature phase decreased markedly with increasing plasticizer content in the usual manner, whereas the previ…
The spacer surface in a compressed gas insulated apparatus constitutes the weakest electrical location in the system. Discharges originating at the spacer-gas-electrode interface and the electric field distortion at the spacer surface may cause surface flashover. The presence of water vapor, conducting particles, and…