Materials Literature
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Dysprosium is ferromagnetic below 85\ifmmode^\circ\else\textdegree\fi{}K, antiferromagnetic between 85 and 179\ifmmode^\circ\else\textdegree\fi{}K, and paramagnetic above 179\ifmmode^\circ\else\textdegree\fi{}K. The spontaneous magnetic moment lies always in the basal plane, and there is anisotropy in this plane below…
Nickel films varying in thickness from 200 to 3 A were prepared by evaporation on glass substrates in a vacuum sufficiently high to prevent gas adsorption on the film during preparation and measurement. Their magnetization was measured as a function of field up to 10 000 oe using a vacuum torsion magnetometer. The sat…
O trabalho presente refere-se principalmente a planárias terrestres coligidas nos Estados de Santa Catarina e do Rio Grande do Sul. Entre as espécies já conhecidas são estudadas anatômicamente Geoplana marmorata Fr. Mull., G. mulleri Dies., G. carrièrei Graff e G. ladislavii Graff. G. marginata var. abundans Graff é c…
The solubility of iron in zirconium was determined to be between 0.017 and 0.025 wt.% in the alpha -phase. The observation of fine ZrFe/sub 2/ particles in a specimen of 0.012 wt.% Fe alloy quenched from 700 deg C indicates that the solubility drops below this composition at 700 deg C and lower. A singlephase ZrFe/sub…
An automatic electron trajectory tracer has been used to analyse four different high current density electron guns operated electrostatically.
Abstract Instability (maximum pressure) criteria for materials obeying a parabolic stress-strain law are investigated. Two special solutions are formulated, accompanied by the instability condition obtained from the author’s approximate theory. Bursting pressure is most accurately predicted by the approximate theory.…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTExchange of Deuterium and Heavy Oxygen among Hydrogen, Water Vapor and Oxide Catalysts of Spinel TypeYukio Yoneda, Akio Fujimoto, and Shoji MakishimaCite this: J. Phys. Chem. 1959, 63, 12, 1987–1990Publication Date (Print):December 1, 1959Publication History Published online1 Ma…
The precipitation phenomena occurring in cobalttantalum alloys were investigated in the temperature range from 500 to 1050 deg C by correlating the results of metallographic, X-ray, micro- and macrohardness, and electrical resistivity studies. The property changes were found to depend on general precipitation and lame…
Yoshié Tanizaki, Teruaki Kobayashi, Noboru Ando; The Relation between the Deformation of Substrate of PV A Sheet by Stretching and the Stretch Ratio Rs, Bu
A process for recycling plutonium and uranium alloy fuels is described; it involves melting and liquating the alloys in ceramic crucibles and casting the partially purified metals. Its particular merit is the rapid turnover of a fuel suitable for a fast reactor. A pilot plant, now under construction, will operate in a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNitroparaffins as Potential Engine FuelE. S. StarkmanCite this: Ind. Eng. Chem. 1959, 51, 12, 1477–1480Publication Date (Print):December 1, 1959Publication History Published online1 May 2002Published inissue 1 December 1959https://pubs.acs.org/doi/10.1021/ie50600a035https://…
Results of Sauter are expressed in the form of a transition matrix which determines the photoelectric effect cross section for arbitrary x-ray polarization and arbitrary initial and final orientations of the electron spin. The structure of the matrix elements accounts for curious properties of the cross section in ter…
With normal types of woven fabric, the assumption of a circular thread cross-section is frequently invalid owing to the considerable thread flattening which usually occurs during weaving. As a basis for studies of fabric structure, therefore, a method has been devised whereby measures of both major and minor thread di…
The bremsstrahlung matrix element at the short-wavelength limit of the spectrum is calculated to lowest order in $\ensuremath{\alpha}\ensuremath{\equiv}\frac{Z}{137}$, for an unscreened Coulomb field. The result, valid for relativistic incoming electrons, is shown to be exactly ${\ensuremath{\alpha}}^{\ensuremath{-}1}…
Summary Yoderite occurs as a major constituent in a quartz-kyanite-tale schist, and is a high-pressure phase formed by the reaction Ky + Tc → Yd + Qu. The monoclinic unit-cell, a 8·10 Å., b 5·78 Å., c 7·28 Å., β 106°, space-group P 2 1 or P 2 1 m , contains approximately (Mg 2·0 Ca 0·2 Fe 0·5 Al 5·3 Si 4·0 O 17·6 (OH)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganic Carbonates. IV.1a,b,c Factors Affecting Formation of Homologous Cyclic CarbonatesSHALOM SAREL, LEO A. POHORYLES, and RAPHAEL BEN-SHOSHANCite this: J. Org. Chem. 1959, 24, 12, 1873–1878Publication Date (Print):December 1, 1959Publication History Published online1 May…
During the growth of coherent precipitates stresses are generated because the lattice dimensions of the precipitate differ from those of the matrix. Whon the strain energy is large enough it will be relieved by the precipitate losing continuity with the matrix, i.e. becoming non-coherent. It is suggested that this wil…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Study of the Zirconium-Hydrogen and Zirconium-Hydrogen–Uranium Systems between 600 and 800°Lee D. LaGrange, L. J. Dykstra, John M. Dixon, and Ulrich MertenCite this: J. Phys. Chem. 1959, 63, 12, 2035–2041Publication Date (Print):December 1, 1959Publication History Publishe…
Carbon steel and stainless steel equipment exposed to gas mixtures rich in hydrogen and carbon-monoxide at temperatures from 800 to 1200 F have been attacked with resulting loss of metal. Conditions under which this attack has been observed in a coal-to-oil synthesis plant and the nature of metal deterioration are des…
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More