918. The interaction of decalin and Friedel–Crafts acetylating agent. Part II
G. Baddeley, B. G. Heaton and J. W. Rasburn, J. Chem. Soc., 1960, 4713 DOI: 10.1039/JR9600004713
Materials Literature
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Die Druckabhängigkeit der Ionenleitfähigkeit anomaler Mischkristalle von AgBr und AgJ
Article Die Druckabhängigkeit der Ionenleitfähigkeit anomaler Mischkristalle von AgBr und AgJ was published on January 1, 1960 in the journal Zeitschrift für Physikalische Chemie (volume 23, issue 5_6).
Kinetics of the Oxidation of Antimony
The oxidation of antimony has been studied between 265° and 385°C. The reaction is characterized by an initially parabolic growth rate, which degenerates into a time‐independent rate, controlled by the gaseous diffusion of ( Sb 2 O 3 ) 2 from the surface region to the cold wall outside the sample furnace. The stationa…
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Effects of Molybdenum, Wolfram and Copper on Solubility of Graphite in Liquid Iron and the Method of Calculation for the Activity of Carbon in a Multicomponent Solution.
Effects of molybdenum, wolfram and copper on solubility of graphite in liquid iron were studied at 1550°C. Interaction parameters at graphite saturation were given as follows:A general approximate equation for calculating the activity coefficient of carbon in a multicomponent solution was given as follows:Validity of…
Die Glykoside von Strophanthus sarmentosus P. DC. 10. Mitt. Untersuchung der stark polaren Cardenolide aus der var. senegambiae (A. DC. (MONACHINO)). Glykoside und Aglykone, 215. Mitteilung
Abstract Zur Untersuchung gelangten die stark polaren Anteile (Chf‐Alk‐(2:1)‐Extrakt) der aus den Samen von Strophanthus sarmentosus var. senegambiae nach Fermentierung gewonnenen Glykoside. Es konnten darin insgesamt 32 Glykoside (I–XXIII, F–N und S) nachgewiesen werden. Sechs davon (I–VI) waren relativ schwach polar…
The resistance of sheet insulation to surface discharges
Investigations show that a satisfactory classification of insulating materials with respect to their resistance to deterioration and breakdown by surface discharges in air is given by time-to-breakdown tests using simple rod and plate electrodes. It is necessary to circulate dry air over specimens to avoid the formati…
A study of thermal degradation and oxidation of polymers by infrared spectroscopy. Part II. Polybenzyl
The primary mode of degradation of polybenzyl at elevated temperatures in the presence of air has been found to be an oxidative attack on the methylene bridge. Initially the methylene bridge is oxidized to keto and hydroxyl groups. Later substantial amounts of acid anhydride and/or ester are formed. Extensive oxidatio…
CLAYS AND CLAY MINERALS OF NEW ENGLAND AND EASTERN CANADA
Clay minerals were collected from shales and clay deposits in New England and Eastern Canada ranging in age from Precambrian to Recent. The collection was made to include representative clay minerals of each district, geological period, and environment. Fifty-six samples were selected for detailed petrographic and X-r…
(α, n) Cross Sections for 48Ti and 51V
48Ti, 51Vの(α, n)反応の断面積をEα=31 MeVまでStacked foil法を使った放射化法で測った。これらの反応は51Crおよび54Mnの無担体放射性同位元素の製造に対しても考慮さるべき経路の1つであろう。照射には核研160cmサイクロトロンを使用し,ビームの強さはファラデー・カップを用いて測った。Ti-ターゲットとしては約1.8mg/cm2の金属箔を, V-ターゲットとしてはAl箔の上にV2O5を少量のクリヤー・ラッカーと共に吹きつけたものを用いた。照射後短寿命放射能を崩壊させてのち, 51Crの325keV-γ線, 54Mnの840keV-γ線を1 3/4;×2in.の井戸型シンチレータで測定した。放射能の…
Field Emission, A Newly Practical Electron Source
The properties of the field emission electron source are discussed. These include high current density, small size, no heater, instantaneous response, and a highly non-linear current-voltage relationship. Engineering data are then derived including conductance, perveance, beam power, etc. It is shown that the field em…
VAPOR PRESSURES OF FeCl2, FeBr2 AND FeI2 BY THE TORSION EFFUSION METHOD
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVAPOR PRESSURES OF FeCl2, FeBr2 AND FeI2 BY THE TORSION EFFUSION METHODR. J. Sime and N. W. GregoryCite this: J. Phys. Chem. 1960, 64, 1, 86–89Publication Date (Print):January 1, 1960Publication History Published online1 May 2002Published inissue 1 January 1960https://doi.or…
Structural Implications of the Electron Microscopy of Glass Surfaces
Electron microscopy of fractured and polished surfaces of commercial silicate glasses by the preshadowed carbon replica technique reveals the presence of inhomogeneities in the glass ranging in size from 30 to 150 a.u. in diameter. Experiments were carried out to prove that the observed features resulted neither from…
267. Oxidation by persulphate. Part II. Oxidation effects with a methyl group and some substituted methyl groups on a benzene nucleus
The first page of this article is displayed as the abstract.
A study of thermal degradation and oxidation of polymers by infrared spectroscopy. Part I. Experimental technique and butylated melamine formaldehyde and urea formaldehyde
This is the first of a series of papers concerned with the general problem of thermal degradation and oxidation of polymers. Part I consists of a description of the technique used and the results obtained on butylated melamineformaldehyde and urea-formaldehyde resins. The course of the degradation and/or oxidation is…
Precise Measurement of Density and Surface Tension at Temperatures up to 1000°C in one Apparatus
A method for the precise measurement of surface tension and density of molten salts in one apparatus at temperatures up to 1000°C is reported. The essential features of the apparatus are a density bob of special design to enable surface tension data to be obtained simultaneously, and a continuously variable height cru…
Wet and Dry Deposition of Fallout Materials at Kjeller
Daily measurements of fallout air activity and deposited activity at Kjeller, Norway, from I Sept. 1956 to 30 Sept. 1959 are given as monthly means for days with and without obvious precipitation. It seems that significant concentrations of fallout particles reach the earth about 3 months after high-yield test explosi…
STATISTICAL PROPERTIES OF ATOMIC AND NUCLEAR SPECTRA
A brief survey was presented of the experimental data on the distributions of the neutron widths of nuclear finestructure levels and of the nearest-neighbor spacings for both atomic and nuclear energy levels. Random- matrix mcdels to predict these data were discussed both analytically (in all possible cases) and via M…
Octahedral complexes. Part 2.—The calculation of spin-orbit coupling energies
J. S. Griffith, Trans. Faraday Soc., 1960, 56, 193 DOI: 10.1039/TF9605600193
The Dynamic Behavior of Thermoelectric Devices
Abstract not Available.