Materials Literature
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In the present study, X-ray and chemical analyses were carried out on carbides isolated electrolytically from several high-V high speed steels, and the effect of carbon, tungsten and vanadium contents on the constitution of carbides in these steels were discussed. Carbides in high-V high speed steel are MC, M6C and M2…
Lincoln County has yielded a variety of metals and minerals: gold, coal, iron, lead, copper, zinc, fluorite, bastnaesite, gypsum, and tungsten. In addition, deposits of molybdenum, thorium, uranium, and manganese are known, although no significant production has been recorded. The White Oaks district produced almost $…
Coefficients for the diffusion of cerium in molten uranium have been measured over the temperature range 1170°–1480°C. An equation relating the diffusion coefficient with temperature is: . At 1200°C the diffusion coefficient for cerium in uranium is . An estimate of the coefficient of diffusion for zirconium in uraniu…
The equilibrium diagram for the system was established as a solid solution type by quenching and solid‐state methods. About was found soluble in at 850°C, but less than 2 mole % was soluble in at 650°C. Solid solution of in was extensive, ranging from approximately 35 to 100 mole % . The cathodoluminescence of composi…
A kinetic analysis was carried out, with a continuous flow reactor, for demethylation of toluene to yield benzene under pressures ranging from 10 to 50atm and at temperatures from approximately 580°to 680°C, while maintaining the hydrogen to toluene mole ratio constant at 4.The 1.5-order rate was confirmed in agreemen…
E. F. G. Herington, Analyst, 1959, 84, 680 DOI: 10.1039/AN9598400680
Substantial improvements in the physical strength properties of certain fibrous regenerated cellulose products, notably rayon tire cord, have been achieved during the past decade. These advances in tensile and fatigue properties of tire cord rayon are reviewed and the factors responsible for the improvements are discu…
Abstract Zur Erzielung eines gleichmäßigeren Verlaufs der anionischen Caprolactam‐Polymerisation wurden G RIGNARD ‐Verbindungen eingesetzt. Es gelang damit Polymerisationen auszulösen, die den bekannten Gesetzmäßigkeiten folgten. Ein Zusatz von Essigsäureestern langkettiger Alkohole zum Polymerisationsansatz erbrachte…
Abstract not Available.
K. Butler and M. W. Partridge, J. Chem. Soc., 1959, 1512 DOI: 10.1039/JR9590001512
L. A. Woodward and H. F. Owen, J. Chem. Soc., 1959, 1055 DOI: 10.1039/JR9590001055
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J. H. Gorvin, J. Chem. Soc., 1959, 678 DOI: 10.1039/JR9590000678
F. A. Cotton, J. L. Down and G. Wilkinson, J. Chem. Soc., 1959, 833 DOI: 10.1039/JR9590000833
Abstract Bisequal soils with fragipans are common in southern Illinois. The purpose of this introductory paper is to set the general framework for understanding the nature and occurrence of these soils through the description of the morphology, chemical and physical properties, and field relationships of Hosmer silt l…
Abstract It is well known that the modulus and equilibrium swellling of long‐chain polymers are both related to degree of crosslinking. Modulus theory normally assumes that chain segments are completely free at all points except the junctions of chains (crosslinks). In practice, however, there are trapped entanglement…
The fluorescence of binary and ternary germanates of Ca, Sr, Ba, Mg, and Zn with different activators was investigated. Germanate phosphors activated with Pb, Ti, and Mn are described. The ternary composition triangles are given together with the x‐ray powder‐diagrams of 23 hitherto unknown germanates.
The influence of the formation voltage on the structure of nonporous anodic aluminum oxide films has been studied by electron microscope and electron diffraction methods. It has been shown that low formation voltages (<100 v) produce an amorphous oxide layer, whereas high formation voltages produce amorphous oxide tog…
Joan Stadler, Charles Yanofsky; STUDIES ON A SERIES OF TRYPTOPHAN-INDEPENDENT STRAINS DERIVED FROM A TRYPTOPHAN-REQUIRING MUTANT OF ESCHERICHIA COLI, Genet
The kinetics of the dissolution of copper in stirred oxygen‐containing solutions of ethylenediamine and several amino acids have been examined and compared with those found earlier for ammonia. In each case, provided that the partial pressure of oxygen exceeds a critical value (below which its transport to the copper…