Materials Literature
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In this article the authors seek to compute the percentage of comber waste, to make some modifications or improvements in the constitutent parts of the combers now in use, and to find a guide to further study on the subject. As regards combing action in a cotton comber, we have made some theoretical approaches from th…
(1) The stiffness of textile fabrics depends upon its bending directions, and in general the stiffness in bias directions is relatively small.(2) In so far as the bending is concerned, the fabrics are like 2-plywood but when woven into typical ribs in one direction they become like in mono-plywood.(3) The stiffness in…
Abstract Type species for the trilobite genus Pseudocryphaeus and the subgenus Asteropyge (Metacanthina), proposed and briefly described in 1953, are here described in detail, as well as several related forms, including the new subspecies A. (M.) oehlerti praecursor and P. michelini barroisi.
In order to build up a background to the relative difficulty for burning the different raw materials in cement production the solid phase reactions between SiO2 and either CaCO3 or BaCO3 at the temperatures ranging 500°-800°C were studied by measuring the amount of CO2 liberated during the reaction. Then, applying the…
We have studied the martensite transformation of Cu-Al binary alloys which contained 12, 18%Al. From the results of our experiment, we found that there were two types of β′ transformed from β by martensitic way when β was cooled with different velocities. The one type occurred when the Vc (cooling velocity) became gre…
Les qualités de luminosité et de résolution du spectromètre F.-P. justifient la généralisation de son emploi à divers domaines de la spectroscopie où seuls le prisme et le réseau sont habituellement utilisés ; mais cette généralisation n'est effectivement possible que si le spectromètre F.-P. est transformé en spectro…
A study has been made of the factors that affect or bring about the corrosion of the zinc electrode in a silver‐zinc‐alkali cell. Cells containing 30% potassium hydroxide as electrolyte were used and kept at room temperature. Special attention was centered on open circuit or stand conditions. This corrosion is affecte…
電解により90Sr-90Y中性溶液から高純度の無担体90Yを単離する迅速法を報告した.放射化学的純度は99.9%以上であり収量を問わないならば無担体90Yを数分間で調製することができる.90Sr-90Y溶液をpH5～6に調節し,白金を両極(陰極には銅を代用してもよい)として2～6ボルトの電圧をかけると無担体90Yが陰極にだけ析出する.陰極上とのイットリウムは使用目的に応じて酸で溶出することができる.電解液の支持塩は硝酸アンモニウム,硫酸アンモニウム,塩化アンモニウムのいずれでもよい.ストロンチウムの担体を含むときには硫酸塩を使えないことはいうまでもない.
A new method of preparing cadmium niobate was demonstrated. This method involved the anodic spark reaction of cadmium in a niobate solution and crystallization of the anode product by heating at 650°C. The crystallized anode product was made into a solid wafer by pressing it at 350,000 psi, and electrical measurements…
H. van Olphen, M. B. M'Ewen and M. I. Pratt, Trans. Faraday Soc., 1958, 54, 144 DOI: 10.1039/TF9585400144
Phase equilibrium data have been obtained for compositions in the ternary system lying near the compound, particularly those on the orthophosphate join. It was found that "gamma zinc orthophosphate" is a ternary solid solution which has a region of stability on the orthophosphate join ranging from about 5 to about 25…
In this book, we study theoretical and practical aspects of computing methods for mathematical modelling of nonlinear systems. A number of computing techniques are considered, such as methods of operator approximation with any given accuracy; operator interpolation techniques including a non-Lagrange interpolation; me…
R. A. W. Hill, Trans. Faraday Soc., 1958, 54, 685 DOI: 10.1039/TF9585400685
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInorganic Complex Compounds Containing Polydentate Groups. XVII. Reaction of Complexes of Cobalt(II) and Quadridentate Amines with Hydroxide IonsHans B. Jonassen and Gayle T. StricklandCite this: J. Am. Chem. Soc. 1958, 80, 2, 312–315Publication Date (Print):January 1, 1958P…
The variation of line width (Delta H) and effective g factor (g/sub eff/) with cobalt content and with temperature is studied in a series of ferrites of composition Ni/sub 1- alpha/Co/sub alpha/Mn/sub 0.02/Fe/sub 1.9/O/sub 4+-/. Here alpha lies between 0 and 0.09; temperatures range from 20° to 340° C. A minimum in De…
F. G. Buttler and H. F. W. Taylor, J. Chem. Soc., 1958, 2103 DOI: 10.1039/JR9580002103
Experiments and results on the interaction of tantalum with O 2 , N 2 , and H 2 are presented. The {100} is shown to be the habit plane of the segregation of the reaction products which appear to be Ta 2 O 5 , TaN , and β TaH , respectively. The role of the gas‐metal interaction on the fracture behavior of single crys…
The usual method of evaluating the harmonic components of the m.m.f. wave of a polyphase winding is to perform a Fourier analysis. This can, however, be a long and tedious process, especially for stepped waveforms, and further it is common practice to perform the analysis for two limiting current-vector positions, to…
F. T. Maggs and D. Sutton, Trans. Faraday Soc., 1958, 54, 1861 DOI: 10.1039/TF9585401861
Tavger et Zaitsev [6] ont montré que les opérations de symétrie qui ramènent le milieu cristallin sur lui-même sont en nombre plus élevé pour un cristal antiferromagnétique que pour un cristal paramagnétique. Il faut en effet considérer les « antiopérateurs » qui sont le produit d'une opération géométrique d'espace pa…