Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCellulose Ester SolutionsCharles R. Fordyce and David R. SimonsenCite this: Ind. Eng. Chem. 1949, 41, 1, 104–111Publication Date (Print):January 1, 1949Publication History Published online1 May 2002Published inissue 1 January 1949https://pubs.acs.org/doi/10.1021/ie50469a027h…
The first page of this article is displayed as the abstract.
Conductivity pulses were observed immediately after a single crystal of barium titanate was placed in an electric field, but died out in a few seconds. Several experiments were designed to test the hypothesis that these pulses were caused by the Barkhausen effect. From the experiments, the volume of a Barkhausen regio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on the Schardinger Dextrins. II. Preparation and Properties of AmyloheptaoseDexter. French, Melvin L. Levine, and J. H. PazurCite this: J. Am. Chem. Soc. 1949, 71, 1, 356–358Publication Date (Print):January 1, 1949Publication History Published online1 May 2002Publish…
Research Article| January 01 1949 Acid-soluble pigments of molluscan shells. 4. Identification of shell porphyrins with particular reference to conchoporphyrin R. E. H. Nicholas; R. E. H. Nicholas 1Department of Chemical Pathology, University College Hospital Medical School, and Department of Physiology, London Hospit…
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A systematic study is made of the kinetics of the reactions including a study of the time, temperature, and pressure variables. The reaction rates are studied by the vacuum microbalance method and the surface structures by the electron diffraction method. The data are correlated with fundamental diffusion and solution…
B. Raistrick, Discuss. Faraday Soc., 1949, 5, 234 DOI: 10.1039/DF9490500234
An experimental and theoretical study of the relationship between saturation magnetostriction and the order-disorder transformation in an iron-cobalt alloy has been carried out. For the experimental work Fe-Co alloys in the neighborhood of the 50 atomic percent composition containing 0.75 percent Cr were employed. Mea…
The preparation of hyper‐pure silicon by reduction of silicon tetrachloride with zinc vapor is described. This reaction, which takes place at 950 C, was carried out in apparatus constructed of fused silica. The silicon prepared by this process was essentially spectrographically free of metallic impurities, and had ext…
The increase in the electrical resistance of severely cold-worked metals has been calculated by assuming that the important change which occurs during cold-work is the introduction of large numbers of Taylor dislocations. The results obtained are as follows: The calculated increase in the electrical resistance of poly…
The state of stress in the core of a notched bar is analysed at the moment when pronounced plastic yielding begins. The theory is two-dimensional and an ideal plastic-rigid material is assumed. Following a general analysis of the problem, the magnitude of the constraint factor is calculated for a deep notch with a sem…
W. G. Oakes and R. B. Richards, J. Chem. Soc., 1949, 2929 DOI: 10.1039/JR9490002929
A hollow rectangle cut from a single crystal of 3.8 percent silicon iron has been studied with the aid of powder patterns and flux measurements. The edges and surfaces were all cut accurately parallel to 100>, the directions of easy magnetization. The domain pattern consists of 8 domains, four forming an inner rect…
A. Glasner and K. R. S. Asher, J. Chem. Soc., 1949, 3296 DOI: 10.1039/JR9490003296
A study has been made of the effects of the concentration of dissolved oxygen and temperature on the rate of breakdown of sodium nitrite in the presence of steel, and on the rate of corrosion of the steel. It was found that, at any given temperature, an increase in concentration of oxygen decreased the amount of nitri…
The first page of this article is displayed as the abstract.
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Terrell L. Hill; Physical Adsorption on Non‐Uniform Surfaces. J. Chem. Phys. 1 January 1949; 17 (…
Zirconium metal was heated in nitrogen, oxygen, and air at temperatures ranging from 425 to 1300 C. Observations were made on the gain in weight, micro‐ and macrohardness, and metallographic structures. Nitrogen diffuses into zirconium at a much slower rate than oxygen. A marked increase in penetration of both gases w…
Les auteurs montrent que l'on peut obtenir un quart d'onde quasi achromatique en juxtaposant deux lames cristallines, l'une demi-onde, l'autre quart d'onde pour la région moyenne à achromatiser. L'angle des lignes neutres des deux lames étant de 60 degrés — β (β un angle inférieur à 3,5 degrés dépendant de la nature d…