Materials Literature
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Abstract Polyvinylpyrrolidone (PVP) can be conveniently fractionated from water by successive precipitation with acetone, from chloroform with ether, or from ethanol with benzene. The major part (60–70%) of the common PVP has the intrinsic viscosity of 0.12–0.30. The fractions can be liberated from the low molecular c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Activity of Nickel BoridesRaymond Paul, Paul Buisson, and Nicole JosephCite this: Ind. Eng. Chem. 1952, 44, 5, 1006–1010Publication Date (Print):May 1, 1952Publication History Published online1 May 2002Published inissue 1 May 1952https://pubs.acs.org/doi/10.1021/ie…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of Crystalline Nucleus Formation in Supercooled Liquid Tin1,2Guy M. Pound and Victor K. La MerCite this: J. Am. Chem. Soc. 1952, 74, 9, 2323–2332Publication Date (Print):May 1, 1952Publication History Published online1 May 2002Published inissue 1 May 1952https://pub…
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En el presente trabajo se trata de establecer experimentalmente las diferencias entre los comentos aluminosos y los portland en cuanto a su comportamiento frente a una nueva técnica que ya fue descrita (1) (2), para determinar el tiempo de fraguado (principio, fin e intervalo), basada en las variaciones de resistencia…
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An article by Birkhoff, MacDougall, Pugh, and Taylor (see reference 1) presented hydrodynamic theories of jet formation and target penetration by explosives with lined conical cavities. However, it was unable to explain satisfactorily why the jets produced are several times as long and, therefore, several times as eff…
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Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Abstract The Abbe theory of image formation for a plane object is extended to apply to the case of a three-dimensional object. The diffraction of light by such an object is treated by the standard methods applied to the diffraction of X-rays by crystals. The formation of an image of a three-dimensional periodic object…
Interstitial atoms and vacancies play an important role in the theory of solids and of radiation damage. It is difficult to separate and measure unambiguously these lattice disturbances in metals. It is suggested that measurements of changes in elastic constants may be appropriate in such investigations.An approximate…
Phase transitions in solid solutions (Pb---Ba)Zr${\mathrm{O}}_{3}$ and (Pb---Sr)Zr${\mathrm{O}}_{3}$ have been studied by dielectric, dilatometric, and calorimetric measurements. It is shown that when the Ba concentration in (Pb---Ba)Zr${\mathrm{O}}_{3}$ compositions exceeds a threshold value of about 5 percent, a fer…