Materials Literature
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The solubility of helium in uranium dioxide was calculated directly from atomic properties and compared with experiment. The calculations were based upon a statistical-mechanical formula which assumes dissolved helium to behave as a simple harmonic oscillator in an interstitial site in the UO2 lattice. Knowledge of th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAqueous Sodium Borohydride Chemistry. The Colnage Metals, Copper, Silver, and Gold.L. F. Hohnstedt, B. O. Miniatas, and Sr. M. Concetta. WallerCite this: Anal. Chem. 1965, 37, 9, 1163–1164Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Pu…
Gold films have been vacuum deposited onto quartz substrates in a temperature range from 5° to 750°C. Films which are deposited below about 50°C exhibit decreases in reflectivity of up to 25% over bulk values. Associated with this decrease are large increases in resistivity and near amorphous x-ray diffraction pattern…
Tensile and fatigue tests have been performed on zinc single crystals oriented with the basal plane parallel to the stress axis. In tensile tests twinning occurred at lower stresses at 20 or 77°K than at room temperature. {1122} slip, which had preceded twinning, was prominent on room temperature specimens, but was ob…
If a textile yarn, marked at intervals along its length, is struck transversely by a rifle bullet, a flash photograph taken shortly after impact will reveal a shifting of the marks caused by passage of a strain wave. Analysis of these shifts provides data on the dis tribution of strain and strain velocity in the wave.…
The reststrahlen reflectance of crystalline materials can be enhanced with coatings of nonabsorbing interference films. At the same time the reflectance curve is altered to be nearly rectangular in shape as is more appropriate for infrared reflection filtering. The coatings consist of single films or are designed arou…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalculation of the Hall Effect in Ionic Solutions1aHarold L. FriedmanCite this: J. Phys. Chem. 1965, 69, 8, 2617–2628Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue 1 August 1965https://pubs.acs.org/doi/10.1021/j100892a0…
Abstract The theories of crystal nucleation from solution and the experimental techniques which have been used to study this phenomenon, are reviewed. A more detailed review of nucleation from aqueous solution follows in which attention is drawn to the two types of nucleation, primary and secondary, which characterise…
The production and properties of sheet infrared transmission polarizers of the parallel wire-grating type are discussed. These polarizers are produced by evaporation of a metal conductor on one side of the grooves of an infrared-transmitting plastic film echelette diffraction grating and were first described by Bird a…
The orbital paramagnetic susceptibilities (χ o r b ) in Ni and Cr metals are calculated based on Kubo-Obata's theory and using the energy band calculated by Fletcher in Ni metal, the energy band calculated by Asdente and Friedel, and the one modified by Lomer in Cr metal. With the assumption of rigid band model, χ o r…
The behavior of the water intercalated into kaolin minerals after intercalation of KCH 3 COO has been studied. Halloysite forms a well-known water complex with a 10.1 A basal spacing, whereas kaolinite forms only a partial, and dickite no water complex. Nacrite forms another well-defined water complex with an 8.35 A b…
Abstract Es wird eine Versuchsanordnung beschrieben, in der unter Benutzung einer Vakuumwaage auch in wasserdampfhaltigen Gassen mit Raupunkten über Raumtemperatur die Gewichtsänderung einer Probe kontinuierlich verfolgt weden kann. Für die Oxydationsversuche standen vier reine FeSiLegierungen mit Gehalten von 0,35…
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 W. C. Hagel; Electrical Conductivity of Li‐Substituted Cr2O3. J. Appl. Phys. 1 August 1965; 36 (8…
Abstract Das aus Vanadin(V)‐oxid und Phosphorsäure entstehende V 2 O 5 · P 2 O 5 · 4 H 2 O wird – entgegen anderen Auffassungen – als echtes Hydrat, VPO 5 · 2 H 2 O, erkannt, das ein Schichtengitter mit neutralen (VPO 5 ) ∞ ‐ und H 2 O‐Zwischenschichten besitzt. Bei der Entwässerung, die über ein Monohydrat verläuft,…
Herstellung der im Dreistoffsystem Eisen–Stickstoff–Kohlenstoff auftretenden Nitride und Karbide durch Glühen von Karbonyleisenpulver und Reinsteisenstücken in aufstickenden und aufkohlenden Gasen. Die Kinetik der Phasenbildung bei 500 bis 850 °C. Vorgänge beim Karbonitrieren. Beständigkeit der Nitrid- und Karbidphase…
Two-dimensional analogues of spherulites are formed in the pellicle of bacterial cellulose produced by static cultures of Acetobacter xylinum. These spherulites are much larger (sometimes more than 1 cm diameter) than those usually observed in other natural or synthetic polymers. They are due to the radial orientation…
A method of computing demagnetizing factors using a resistance network analog or an electrolytic tank has been devised, and the demagnetizing factors for spheres, rods, disks, and tubes have been computed for the case μ = ∞. When the size of the model on the analog is appropriate, the value obtained for a sphere is wi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBiosynthesis of Plant Steroids. I. The Origin of the Butenolide Ring of Digitoxigenin1Edward Leete, Harry Gregory, and Eduardo G. GrosCite this: J. Am. Chem. Soc. 1965, 87, 15, 3475–3479Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Publ…
The Raman spectrum of crystalline sulfur dioxide has been recorded at several temperatures between 9 and 185 °K. The main features are in accord with those predicted from the factor group analysis for the known structure of the crystal. Additional peaks were also observed, some arising from isotopic species and lattic…
A rapid and simple method is described for the bacteriological examination of contaminated surfaces. It uses an imprint process with ‘agar sausages’ sterilized in polyamide casings.