Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCritical Permeation Size of Dextran MoleculesW. HallerCite this: Macromolecules 1977, 10, 1, 83–86Publication Date (Print):January 1, 1977Publication History Published online1 May 2002Published inissue 1 January 1977https://pubs.acs.org/doi/10.1021/ma60055a016https://doi.org…
Studies were made with an artificial pit in the side of a flow channel to determine quantitative hydrodynamic effects on pitting rate. Experiments were conducted under potentiostatic conditions with iron, titanium, and aluminum in chloride, bromide, and iodide solutions. Two modes of pitting were observed: (1) a high…
Abstract New iron(III) complexes containing quadridentate Schiff bases, [Fe(L)AB]n+, were prepared, where H2L represents a quadridentate Schiff base, and A and B, unidentate ligands, such as imidazole, pyridine derivatives, and cyanide ions. The magnetic moments of the complexes are in the range of 1.9–6.0 B.M. at roo…
Abstract
The flashover characteristics of pressboard, polycarbonate, polyphenylene oxide, Permali and Perspex have been measured under ramp function pseudoimpulse voltage application conditions in clean, dry, degassed liquids with permittivities varying over the range εr = 2–5. The solid materials were tested in the form of 5×…
Nyerereite has the idealized composition (Na 0.82 K 0.18 ) 2 Ca(CO 3 ) 2 with significant minor substitution of SO 4 2− , PO 4 3− , F − for CO 3 2− , optical properties α = 1.5112, β = 1.5333, γ = 1.5345, 2 V α = 29°, and density 2.541 g cm −3 . The average unit cell has space group Cmc 2 1 , dimensions a = 5.044, b =…
Conference International Conference on Non-Aqueous Solutions, International Conference on Non-aqueous Solutions, ICNAS, Non-aqueous Solutions , Fifth, University of Leeds, England, 1976-07-05–1976-07-09 Published Online: 2009-01-01 Published in Print: 1977-01-01 © 2013 Walter de Gruyter GmbH, Berlin/Boston
The structure of NaTaO3 has been determined from X-ray powder diffraction spectra by measuring the intensities of the difference reflexions caused by the deviations from the ideal cubic perovskite structure. The structure is compared with that determined on the basis of single-crystal measurements.
Thermogravimetry in reducing atmospheres was used to study the oxygen Stoichiometry of several Cu‐substituted lanthanum manganates. The oxygen content of the samples at various levels of reduction (to La 2 O 3 , MnO, and Cu) was calculated from the gravimetric data. Freeze‐dried samples prepared by firing at 1100°C in…
Over 80 percent of the world's annual output of zirconium is fabricated into components for nuclear reactors. In 1976 the CANadian Deuterium Uranium (CANDU) power reactor program will require nearly 500 Mg of zirconium and by 1986 the requirement will have risen to nearly 800 Mg. Most of this is fabricated into tubes…
Treatment of the nickel(II) or copper(II) derivative of octaethyl-meso-hydroxymethylporphyrin with sulphuric acid in dimethyl-formamide or -acetamide gives mainly the meso,meso′-ethylenebis(porphyrinatometal) derivative by reactions involving electron transfer from the metal, In the absence of metal, only disproportio…
It is shown that if a ferromagnetic crystal is biased by means of a static magnetic field ${\stackrel{\ensuremath{\rightarrow}}{\mathbf{H}}}_{0}$, then the electric field dependence of the macroscopic magnetic anisotropy energy gives rise to linear as well as to two kinds of bilinear magnetoelectric effects. When expr…
Concrete canisters for interim dry storage of spent, irradiated Canadian Deuterium Uranium (CANDU) fuel are being developed by Atomic Energy of Canada Limited. The canisters are designed to contain fuel safely for periods of 50 to 100 yr in carbon steel baskets sealed inside a steel- and lead-lined concrete shield. A…
Exchange of quaternary ammonium type anion exchange beads with NaBH4 leads to useful reducing agents possessing the advantage of easy work-up.
We have measured length change vs time for several low thermal expansion materials maintained in evacuated environments at constant temperature (near 300 K). Materials were two types of fused silica, Cer-Vit, ULE, Zerodur, Invar, and super Invar. Δ L/L was measured over a period of 170 days to a precision of two to th…
The critical stress‐intensity factor, K 1C , and the fracture strength, σ f , have been investigated on both hot‐pressed and sintered lithia‐stabilized β ”‐alumina. The hot‐pressed material possessed a strong preferred orientation with many of the basal planes aligned perpendicular to the direction of hot‐pressing. Bo…
"The Corrosion and Oxidation of Metals." British Corrosion Journal, 12(1), p. 5
Research Article| November 01, 1977 Triassic blueschist from northern California and north-central Oregon Preston E. Hotz; Preston E. Hotz 1U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Marvin A. Lanphere; Marvin A. Lanphere 1U.S. Geological Survey, M…
Abstract The one‐electron density function, ρ( r ), (in principle deduced from elastically scattered X‐ray intensities) is the probability distribution function of an electron, averaged over the positions of all other electrons. A partitioning of ρ( r ) into constituent parts is an intellectual exercise that does not…
The electrical conductivity and thermoelectric power of lead zitconate-titanate Pb(Ti0.47Zr0.53)O3 (PZT) have been studied at temperatures up to 1000°C in gaseous ambients with controlled partial pressures of both volatile components: lead oxide and oxygen. The experimental results show the small polaron conduction me…