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Abstract Die Struktur der Verbindung (Ba 2 )( 12 ) (Ni II Te VI )( 6 )O 6 wurde mit Hilfe von Einkristall‐Röntgen‐Beugungsdaten ermittelt und bis zu einem R‐Wert von 2,9% verfeinert. Ba 2 NiTeO 6 kristallisiert rhomboedrisch (Raumgruppe R 3 m) mit a = 5,797 und c = 28,595 Å für die trigonal aufgestellte Elementarzelle…
Low-temperature hydrothermal reactions of metakaolinite have been investigated, with and without additions of silica, by use of the bases LiOH, NaOH, RbOH, and CsOH and also the mixtures NaOH + LiOH, NaOH + KOH, KOH + LiOH, and NaOH + Me4NOH. Over certain temperature and composition ranges reproducible crystallisation…
The deformation and fracture of Zircaloy-4 and pure zirconium sheets having strong (0002) textures were studied under plane-strain compression at temperatures from 20° to 800°C. Zircaloy-4 underwent a ductility transition from limited strain (0.1 to 0.3) to extensive fracture-free flow (> 0.6) at about 300°C; pure zir…
Progress of Theoretical Physics Vol. 50 No. 2 (1973) pp. 529–544On the Extension of the Resonating Group Treatment of Composite Particle Scattering to the Heavy System Hisashi Horiuchi Progress of Theoretical Physics Vol. 50 No. 5 (1973) pp. 1561–1578On the Inner Repulsive Effect Due to the Pauli Principle between Nuc…
(1972). Foam Separation Methods. Separation and Purification Methods: Vol. 1, No. 1, pp. 117-198.
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 F. M. d'Heurle, N. G. Ainslie, A. Gangulee, M. C. Shine; Activation Energy for Electromigration F…
A quantitative optical microscopy study was made on the grain size distribution in one-, two- and three-dimensions in recrystallized titanium (0.2% Oeq) by the linear intercept, planimetric and serial sectioning methods. Analysis of the results revealed that all the size distributions were logarithmic-normal and that…
Fibrous crystals of polyethylene are produced by crystallization from agitated xylene solutions. In this paper, the following properties of macroscopic aggregates of such crystals, grown under carefully specified conditions, and having well-defined morphologies, are investigated: (a) regularity and magnitude of long p…
Clear, colorless glasses that absorb roentgen rays were prepared by melting together compounds yielding silica, barium oxide, boric oxide, and alumina. Barium oxide made the glasses radiopaque and gave the desired refractive index. Boric oxide lowered the melt viscosity, and alumina tended to stabilize the glasses. So…
We give an extensive theoretical and experimental discussion of the statics and dynamics of the Freedericks transition of nematic MBBA films in a magnetic field. The experimental data are obtained from measurements of the anisotropy of the thermal conductivity across the film both in the « planar » and « homeotropic »…
A detailed description is given of certain results of domain structure theory which have been obtained recently and which have not, so far, been treated in monographs or reviews. A large part of the article consists of an analysis of the fundamentals of the theory; the properties of domain structures which are indepen…
Research Article| March 01, 1972 Authigenic Aluminosilicate Minerals in the Tuffaceous Rocks of the Green River Formation, Wyoming RONALD C SURDAM; RONALD C SURDAM Department of Geology, University of Wyoming, P.O. Box 3006, Laramie, Wyoming 82070 Search for other works by this author on: GSW Google Scholar RONALD D P…
A general expression for the local field in anisotropic crystals is derived and applied to crystals of iodoform, benzene, naphthalene, anthracene, bi-phenyl and phenanthrene. The principal refractive indices of anisotropic crystals are related to components of an effective molecular polarizability tensor via anisotrop…
Abstract Organic‐free specimens of 5 metals were prepared and characterized by parameters indicating their relative surface charge, surface texture, and surface energy prior to evaluation of their degree of thromboresistance. For the materials studied, there was no predictive correlation between the pre‐implatation el…
Macrocyclic polyethers: Dibenzo-18-crown-6 polyether and dicyclohexyl-18-crown-6 polyether reactant: 222 g. (1.55 moles) of bis(2-chloroethyl) ether product: Dibenzo-18-crown-6 polyether product: dicyclohexyl-18-crown-6 polyethers solvent: petroleum ether (b.p. 30–60°, approximately 200 ml. was required) solvent: dich…
Creep tests on pure copper and single-phase copper-aluminium alloys (5.8, 11.5, and 16.0 at.-% Al) have been made at 450, 550, and 650° C (723, 823, and 923K) and 19.6, 39.2 and 58.8 MN/m2 (2.0, 4.0, and 6.0 kgf/mm2). Both normal and sigmoidal transient-creep curves were observed, according to the creep-stress and tem…
Based on combined x-ray and neutron-diffraction data, an inference for the coexistence of the B2(CsCl) and P3̄m1 structures in the TiNi-II phase is made. Other experimental evidence indicates the proportion of the B2 to P3̄m1 structures to depend critically on the thermal and mechanical history of the alloy. Through a…
Abstract not Available.
Single‐crystal layers of ZnSe , ZnS , and CdS have been grown epitaxially on GaAs , GaP , and sapphire substrates in an open‐tube system by reaction of the metal vapors with the nonmetal hydride gases. Various factors are discussed which were found to affect the epitaxial growth. These include the role of vapor compos…
Après avoir revu la géométrie des cyclides de Dupin, plusieurs problèmes concernant leur application aux mésophases smectiques sont étudiés. Les résultats de Friedel et Grandjean [8], [9], [12] sont discutés. Si nous supposons que les coniques focales sont les seules singularités de la structure lamellaire, nous pouvo…