Materials Literature
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An evaporation technique has been developed to allow thin (approx. 200 Å thick) detached single crystal films of gold to be prepared. These films are very coherent and uniform in thickness. Dislocation lines are observed in these films with a density of 1010-1011/cm2 The dielocations may be observed to move inside the…
Elastic and charge-exchange cross sections have been measured in the energy range 4 to 400 ev for Ne+ in A, A+ in Ne, and A+ in A. Charge exchange was observed only for A+ in A. No evidence was found for the existence of the diatomic ion NeA+. Constants for empirical potential functions have been evaluated and the fun…
Abstract Stable, high molecular‐weight polyoxymethylene resins show the room temperature x‐ray crystalline patterns expected from early work on unstable or low molecular weight polyoxymethylene resins. High‐temperature studies show the specific features of this resin to be: (1) disappearance of crystalline peaks at 18…
Abstract Poly(vinyl chloride), polymerized with the use of γ‐radiation, benzoyl peroxide, and 2,2′‐azobis(isobutyroitrile) as initiators, was thermally decomposed in vacuo. The gaseous decomposition products as analyzed by mass spectrometry consist primarily of hydrogen chloride for decomposition temperatures below ap…
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Plastic and Reconstructive Surgery and the Transplantation Bulletin: March 1959 - Volume 23 - Issue 3 - p 226-239
Abstract The effects of several-hundred-hour mechanical-mortar dry grinding of halloysite were studied by X-ray diffraction, differential thermal, electron microscopic and other methods and they were compared with those of kaolinite and Kibushiclay. It has been found that there are two sorts of structural change cause…
Abstract Mineralogical, chemical, physical, and morphological data are given for 18 profiles of Red‐Yellow Podzolic soils. These soils represent 3 profiles each of 2 sequences, one derived from acid crystalline rocks and the other from sandstones. Six profiles of Reddish Brown Lateritic soils are included for comparis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilver Migration and Printed WiringSaul Chaikin, Joan Janney, Franklin Church, and Charles McClellandCite this: Ind. Eng. Chem. 1959, 51, 3, 299–304Publication Date (Print):March 1, 1959Publication History Published online1 May 2002Published inissue 1 March 1959https://pubs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSTAFF-INDUSTRY COLLABORATIVE REPORT Vapor-Phase Production of Colloidal SilicaLaurence White and George DuffyCite this: Ind. Eng. Chem. 1959, 51, 3, 232–238Publication Date (Print):March 1, 1959Publication History Published online1 May 2002Published inissue 1 March 1959https…
The composition of the vapor above beryllium oxide held in a tungsten Knudsen cell in the range 1900°-2400°K has been determined mass spectrometrically. The vapor consists predominantly of Be and O atoms and (BeO)3 and (BeO)4 molecules. Smaller amounts of the following molecules were detected: O2, BeO, (BeO)2, (BeO)5,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleClays and Clay Minerals.George L. ClarkCite this: J. Am. Chem. Soc. 1959, 81, 5, 1268Publication Date (Print):March 1, 1959Publication History Published online1 May 2002Published inissue 1 March 1959https://pubs.acs.org/doi/10.1021/ja01514a077https://doi.org/10.1021/ja01514a077r…
Abstract The effects of several-hundred-hour mechanical-mortar dry grinding of kaolinite were studied by X-ray, thermal, electron microscopic and other methods. It has been found that there are two sorts of structural change in the process of dry grinding of kaolinite. One is the production of a non-crystalline substa…
Abstract The presence of spherulites in nylon 66 increases the yield point and reduces the effects of variations in per cent crystallinity. Decreasing the size of the spherulites through increased nucleation results in a higher flexural modulus and yield point, a lower ultimate elongation, and a loss of ductility. The…
A vacuum furnace designed for use with a commercial diffractometer is described. It uses a high-current heater made from tantalum foil, and allows the full Bragg spectrum to be recorded whilst satisfying the Bragg-Brentano focusing condition. The specimen temperature is uniform and can be measured accurately; the furn…
Bei der Emission und Selbstabsorption von weicher γ-Strahlung in Kernen treten bei tiefen Temperaturen in Festkörpern sehr starke Linien mit der natürlichen Linienbreite auf. Diese Linien erscheinen als Folge davon, daß bei tiefen Temperaturen bei einem Teil der Quantenübergänge der γ-Rückstoßimpuls nicht mehr vom ein…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium Polymerization of SulfurArthur V. Tobolsky and Adi EisenbergCite this: J. Am. Chem. Soc. 1959, 81, 4, 780–782Publication Date (Print):March 1, 1959Publication History Published online1 May 2002Published inissue 1 March 1959https://pubs.acs.org/doi/10.1021/ja01513…
The characteristic energy loss spectrum of solids is analyzed with the aid of the dielectric formulation of the many-body problem developed by the authors. It is shown that a measurement of the angular distribution of inelastically scattered fast electrons is a direct measurement of the imaginary part of the inverse d…
Abstract The primary objective of this investigation has been to explain why cellulose acetate behaves as a semipermeable membrane in saline water. To explain this phenomenon, two different mechanisms for the transfer to water and ions through cellulose acetate membranes were formulated. Those ions and molecules that…
Abstract The definitions given previously for work-hardening and perfect plasticity are broadened to cover viscous effects. As before, the system considered is isothermal and includes both the body and the time-dependent set of forces acting upon it. An external agency is supposed to apply an additional set of forces…