Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Plankton samples of Tabellaria from all the lakes of the English Lake District have been examined and evidence of morphologically distinct populations has been found in samples from (a) a single lake at one time, (b) different lakes, and (c) a single lake at different times. Clone cultures have been used to study the…
The addition of calcium hydroxide to expansive clays results in beneficial reductions in the swelling characteristics and in increased resistance of the material to deformation under load. In this study, improvements in clay properties corresponded generally to the amount of calcium hydroxide addition. For two clays,…
D. R. Llewellyn, J. Chem. Soc., 1953, 28 DOI: 10.1039/JR9530000028
J. N. Agar, Trans. Faraday Soc., 1953, 49, 533 DOI: 10.1039/TF9534900533
A description is given of the progress over the past few years of neutron diffraction, with particular reference to its applications, often alongside complementary x-ray studies, to investigations in structural crystallography and the physics of the solid state. This outlines the relevant principles of neutron scatter…
M. Davies and D. M. L. Griffiths, Trans. Faraday Soc., 1953, 49, 1405 DOI: 10.1039/TF9534901405
A method was devised for preparing massive metallic yttrium, terbium, dysprosium, holmium, erbium, and thulium in high purity and high yields by reducing the rare earth chloride or fluoride with calcium metal in tantalum containers in an inert atmosphere. Ytterbium fluoride could be reduced only to the divalent state…
R. N. Beale and E. M. F. Roe, J. Chem. Soc., 1953, 2755 DOI: 10.1039/JR9530002755
Tin and nickel can be codeposited in approximately equi‐atomic proportions from solutions containing stannous chloride, nickel chloride, and fluorides. The alloy deposits thus obtained are almost fully bright and are single phase, having a nickel arsenide type of structure. Below 300°C the deposits are quite stable, b…
Experiments with a composite anode having projections and recesses on its surface insulated from each other showed that the current distribution between projections and recesses underwent very little change when the total current fell and polishing conditions were established. This called for a radical revision of pre…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMacromolecular Properties of Polyvinylpyrrolidone:Molecular Weight DistributionL. E. Miller and F. A. HammCite this: J. Phys. Chem. 1953, 57, 1, 110–122Publication Date (Print):January 1, 1953Publication History Published online1 May 2002Published inissue 1 January 1953https…
A DESCRIPTION IS GIVEN OF THE APPARATUS FOR MAKING HIGH-PRECISION MEASUREMENTS OF THE VELOCITY OF AN ULTRASONIC PULSE IN CONCRETE. THE USE OF THIS VELOCITY (THE LONGITUDINAL-WAVE VELOCITY) AS A CRITERION OF QUALITY IS DISCUSSED WITH REFERENCE TO SUCH CONVENTIONAL CRITERIA AS THE MODULUS OF RUPTURE, COMPRESSIVE STRENGT…
The first page of this article is displayed as the abstract.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRole of Surface Active Agents in WettingFrederick M. FowkesCite this: J. Phys. Chem. 1953, 57, 1, 98–103Publication Date (Print):January 1, 1953Publication History Published online1 May 2002Published inissue 1 January 1953https://pubs.acs.org/doi/10.1021/j150502a021https://d…
J. F. Brown, D. Clark and W. W. Elliott, J. Chem. Soc., 1953, 84 DOI: 10.1039/JR9530000084
The experiments described test the theory of fine-particle magnets. Particles of Fe, Co, and Ni, of size 100-2000A, were prepared by electrodeposition into a mercury cathode. Their sizes and shapes were determined with an electron microscope. Experiments on coercive force $\mathrm{vs}$ particle size show, in general a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation of Other Borohydrides by Metathetical Reactions Utilizing the Alkali Metal Borohydrides1H. I. Schlesinger, Herbert C. Brown, and Earl K. HydeCite this: J. Am. Chem. Soc. 1953, 75, 1, 209–213Publication Date (Print):January 1, 1953Publication History Published…
The general behavior of magnetite (iron ferrite) at its low temperature transformation ($\mathrm{ca}$ 118\ifmmode^\circ\else\textdegree\fi{}K) is reviewed. One of the properties which undergoes a large change is the magnetocrystalline anisotropy, which is larger in magnitude and has a lower symmetry below the transfor…
Summary Proofs are given of theorems stated in the Bishop-Hill theory of crystal distortion. Mathematical relations are established for the deformation of crystals by simultaneous shears, and the possibility of enforcing an arbitrary strain by glide is examined. The uniform stress states not exceeding the critical she…
The spin-lattice relaxation time, ${T}_{1}$, has been determined in single crystals of nickel ferrite, by using the ferromagnetic resonance effect at a frequency of 9000 Mc/sec. At high levels of microwave power, the saturation effect is observed both in the resonance absorption and in the component of magnetization a…