Materials Literature
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An account is given of what the author believes to occur when static charges are generated on polymeric insulating surfaces by contact with other surfaces. The subject is approached by trying to predict what will happen, for subsequent comparison with experiment, rather than by taking existing data and trying to expla…
An investigation of some substitution reactions of 1-methylpyrrole has indicated that the α-directing effect of the hetero nitrogen during nitration is even less than it is in pyrrole. 3-Nitro-1-methylpyrrole has been prepared together with the 2-isomer by direct nitration of 1-methylpyrrole as well as indirectly. The…
The Curie point of polycrystalline barium titanate is found to increase proportionally to the square of an applied planar (two-dimensionally isotropic) compressive stress.Received 29 June 1956DOI:https://doi.org/10.1103/PhysRev.105.57©1957 American Physical Society
Photolytic darkening and electron range were investigated for a series of silver chloride crystals cut from a single boule which was grown in vacuum by the Bridgman technique. The effect of annealing atmosphere on both the initial darkening rate and electron range is discussed. Darkening produced by absorption of ligh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Accommodation Coefficients on Gas-covered Tungsten, Nickel and Platinum1I. Amdur and L. A. GuildnerCite this: J. Am. Chem. Soc. 1957, 79, 2, 311–315Publication Date (Print):January 1, 1957Publication History Published online1 May 2002Published inissue 1 January 1957h…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Thermal Decomposition of Chloroform. II. Kinetics1aGeorge P. Semeluk and Richard B. BernsteinCite this: J. Am. Chem. Soc. 1957, 79, 1, 46–49Publication Date (Print):January 1, 1957Publication History Published online1 May 2002Published inissue 1 January 1957https://pubs.…
<div class="section abstract"><div class="htmlview paragraph">DESCRIBED here is a 250-hp free-piston gasifier-turbine engine that has actually been installed in an automobile.</div><div class="htmlview paragraph">A unique feature of this Hyprex engine is that it is a siamesed unit. The overall…
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This report discusses the application of electron magnetic resonance techniques to defect and impurity sites in solids, conduction electrons in metals, ferromagnetic, ferrimagnetic and antiferromagnetic materials. It also reviews the recent experiments on cyclotron resonance in semiconductors together with a brief acc…
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Certain of the criteria used for distinguishing vermiculites in clays from smectites are critically examined, and attention is drawn to the urgent need for further esearch in this field. Difficulties inherent in the differ-entiation are heightened by the common occurrence of interlayer con-tamination in the naturally…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the Thermal Dissociation of Organic Compounds. XI. The Effects of the Substituents on the Thermal Dissociation of Urethans in Amine SolventTeruaki Mukaiyama and Masaru IwanamiCite this: J. Am. Chem. Soc. 1957, 79, 1, 73–76Publication Date (Print):January 1, 1957Publicatio…
The infrared spectra of finely powdered samples in pressed disks of KBr have been obtained for sulfamic acid, sodium and potassium sulfamates, and the corresponding deutero-compounds in the region from 4000 to 500 cm—1 at several temperatures. Satisfactory vibrational assignments could be made for the zwitterion model…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStress Activated Luminescence in X-Irradiated Alkali Halide CrystalsF. I. Metz, R. N. Schweiger, H. R. Leidler, and L. A. GirifalcoCite this: J. Phys. Chem. 1957, 61, 1, 86–89Publication Date (Print):January 1, 1957Publication History Published online1 May 2002Published inis…
Glasses have been made in the systems and with contents ranging between 50 and 87 mole%. The glasses were found to be semiconductors, those with the highest contents having a specific conductivity of the order of 10 −5 ohm −1 cm −1 at room temperature. The relationship between the specific conductivity, σ, and the tem…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron Deficient CompoundsR. E. RundleCite this: J. Phys. Chem. 1957, 61, 1, 45–50Publication Date (Print):January 1, 1957Publication History Published online1 May 2002Published inissue 1 January 1957https://pubs.acs.org/doi/10.1021/j150547a010https://doi.org/10.1021/j1505…
D. Chapman, J. Chem. Soc., 1957, 4489 DOI: 10.1039/JR9570004489
This paper reviews the experimental and theoretical work on photographic sensitivity and related topics which has been published during the past ten years. New experimental results, obtained to a large extent with model systems, have necessitated substantial revision and amplification of previously accepted theories.…
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