Materials Literature
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Acrylamide, methacrylamide, methylene-bis-acrylamide, vinyl carbazole, vinyl stearate, acrylic acid, methacrylic acid and potassium, calcium and barium acrylates have been polymerized in the solid state by irradiation with γ-rays. Further, the molecular weight of polyacrylamide obtained at low conversion was constant…
The behavior of transient nuclear induction signals from solids is described by a stochastic model based on a Markoff process. The model assumes the presence of local dipolar field fluctuations in a crystal due to a set $B$ of coupled nuclei. These fluctuations can destroy or enhance the observed precessional coherenc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeats of Formation of Niobium Nitride, Tantalum Nitride and Zirconium Nitride from Combustion CalorimetryAlla D. Mah and Norma L. GellertCite this: J. Am. Chem. Soc. 1956, 78, 14, 3261–3263Publication Date (Print):July 1, 1956Publication History Published online1 May 2002Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeat of Formation of Solid and Liquid Alloys in the Systems Silver–Cadmium, Silver–Indium and Silver–Antimony at 450°O. J. KleppaCite this: J. Phys. Chem. 1956, 60, 7, 846–852Publication Date (Print):July 1, 1956Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of pH on Polymerization of Silicic AcidKatsumi GotoCite this: J. Phys. Chem. 1956, 60, 7, 1007–1008Publication Date (Print):July 1, 1956Publication History Published online1 May 2002Published inissue 1 July 1956https://pubs.acs.org/doi/10.1021/j150541a046https://doi.o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Study of the LixMn(1-x)O System1W. D. Johnston and R. R. HeikesCite this: J. Am. Chem. Soc. 1956, 78, 14, 3255–3260Publication Date (Print):July 1, 1956Publication History Published online1 May 2002Published inissue 1 July 1956https://pubs.acs.org/doi/10.1021/ja01595a006ht…
Using Green's function methods, we express the field of a grating of cylinders excited by a plane wave as certain sets of plane waves: a transmitted set, a reflected set, and essentially the sum of the two "inside" the grating. The transmitted set is given by\psi_{o} + 2\SigmaC_{\upsilon}G(\theta_{\upsilon}, \theta_{o…
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Se considera en este trabajo, por una parte, el mecanismo de la acción de los agentes tensoactivos; por otra, las distintas teorías emitidas sobre el fenómeno de la retracción y finalmente los resultados experimentales en cuanto a los efectos de la presencia del “Plastiment” como agente tensoactivo en las pastas y mor…
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Extensive studies of the viscoelastic properties of polymers undertaken in the author's laboratory by means of the method of stress relaxation are here reviewed. The discussion is divided into four parts: chemical stress relaxation, stress relaxation in amorphous polymers, stress relaxation in crystalline polymers, an…
Electron optical experiments on Al foils have revealed individual dislocations in the interior of the metal. The arrangement and movement of individual dislocations have been observed. Most of the dislocations occur in the boundaries of a substructure, the diameter of the subrains being of the order of 1 μ, or more. T…