Materials Literature
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Abstract The recently developed x‐ray method of crystallinity determination is applied to products of heterogeneous acid hydrolysis of cellulose fibers. Upon treatment of viscose rayon fibers with boiling 2.5 N sulfuric acid, the crystalline fraction is increased from 39 to 49% within half an hour, and remains constan…
Abstract Natural rubber and GR‐S synthetic rubber have been vulcanized to varying degrees of cross linking through the use of disazodicarboxylates. These compounds react readily with the above unsaturated polymers in a manner which assures the formation of one cross linkage for each molecule of the disazo compound. El…
The standard equations of radioactive transformation are generalized to include the case where radioactive nuclei are subject to transformation by neutron absorption in addition to spontaneous decay. Opportunity is taken to derive the equations by a simple method which avoids recourse to the formal methods of solving…
A general treatment of the scattering of radiation by an inhomogeneous material is developed. It is shown how scattering measurements can be used to obtain the average square of the fluctuations in refractive index or electron density and a correlation function which measures the degree of correlation between two fluc…
The increased emphasis on quantitative biological studies in recent years has resulted in the widespread use of statistical methods for evaluating biological data. Much of this data is of the all-or-none type and, consequently, it is neces-sary to solve a dose-per cent effect curve. By converting doses to logarithms a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubility Data for Ternary Liquid Systems. Systems of Acetic Acid, Higher Boiling Homologous Acids and Water.Donald F. Othmer and Jose. SerranoCite this: Ind. Eng. Chem. 1949, 41, 5, 1030–1032Publication Date (Print):May 1, 1949Publication History Published online1 May 2002…
Abstract Untersuchung der Verwandtschaft in den Systemen Be, Cr, Y, Zr, Mo, Hf, W, Os, Th, U mit Mg und Feststellung erheblicher Legierbarkeit mit Y, Zr, Os, Th. – Auf Grund der gewonnenen Erkenntnisse über den Einfluß des Thoriums und Zirkoniums wurden hochwarmfeste Legierungen im System Mg–Th–Zr entwickelt. Auf Grun…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEmulsion Polymerizations at Low Temperatures C. F. Fryling, S. H. Landes, W. M. St. John, and C. A. UraneckCite this: Ind. Eng. Chem. 1949, 41, 5, 986–991Publication Date (Print):May 1, 1949Publication History Published online1 May 2002Published inissue 1 May 1949https://doi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA STUDY OF THE POLYMERIZATION PRODUCTS OF DIKETENE1,2ARTHUR B. STEELE, ALBERT B. BOESE, and MALCOLM F. DULLCite this: J. Org. Chem. 1949, 14, 3, 460–469Publication Date (Print):May 1, 1949Publication History Published online1 May 2002Published inissue 1 May 1949https://pubs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-Ray Diffraction Studies of Sodium Chloride–Sodium Bromide Solid Solutions.J. E. Nickels, M. A. Fineman, and W. E. WallaceCite this: J. Phys. Chem. 1949, 53, 5, 625–628Publication Date (Print):May 1, 1949Publication History Published online1 May 2002Published inissue 1 May…
The diffraction of a scalar plane wave by an aperture in an infinite plane screen is examined theoretically. The wave function at an arbitrary point of space is expressed in terms of the discontinuity in its normal derivative at the screen, where the boundary condition is that of vanishing wave function. An integral e…
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