Materials Literature
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A general examination of the effects of cellulose source and conditions of acetylation on the crystalline structure of cellulose triacetate has been carried out. Heat has been shown to markedly improve the lateral order of the structure and thereby to demonstrate the existence of two stable polymorphic crystalline for…
Article Notizen: Röntgenographische Abbildung des Verzerrungsfeldes einzelner Versetzungen in Germanium-Einkristallen was published on April 1, 1958 in the journal Zeitschrift für Naturforschung A (volume 13, issue 4).
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIrradiation of Polyethylene. II. Kinetics of Unsaturation EffectsMalcolm Dole, D. C. Milner, and T. F. WilliamsCite this: J. Am. Chem. Soc. 1958, 80, 7, 1580–1588Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 195…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcid-Base Titrations in Nonaqueous SolventsJohn A. RiddickCite this: Anal. Chem. 1958, 30, 4, 793–805Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https://pubs.acs.org/doi/10.1021/ac50163a027https://doi.org/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome N-Disubstituted Amides of Long-Chain Fatty Acids as Vinyl PlasticizersFrank C. Magne, Robert R. Mod, and Evald L. SkauCite this: Ind. Eng. Chem. 1958, 50, 4, 617–618Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 A…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFlavopereirine, an Alkaloids from Geissospermum vellosiiNeil A. Hughes and Henry RapoportCite this: J. Am. Chem. Soc. 1958, 80, 7, 1604–1609Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https://pubs.acs.org/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPerchloric. Acid Titrations of Porphyrins in NitrobenzeneS. AronoffCite this: J. Phys. Chem. 1958, 62, 4, 428–431Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https://pubs.acs.org/doi/10.1021/j150562a013http…
A packing of spheres is taken as a suitable model of porous media. The packing may be regular and the sphere size may be uniform, but in general, both should be random. Approximations are developed to give the volumes and surface areas of pendular rings that exist at points of sphere contact. From these, the total fre…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTShock Waves in Chemical Kinetics: The Decomposition of N2O5 at High Temperatures1Garry Schott and Norman DavidsonCite this: J. Am. Chem. Soc. 1958, 80, 8, 1841–1853Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1…
SUMMARY: Phaeodactylum tricornutum Bohlin was isolated from a marine tank at Woods Hole, Mass., U.S.A. It appeared to be identical with the Plymouth strain of ‘Nitzsckia closterium forma minutissima’. Cells were of two characteristic types, oval and fusiform, each of which remained constant for many cell divisions in…
WO 3 is monoclinic at room temperature and has a domain structure with walls of (110) and (100) twin planes. The (110) wall is displaced sideways by a pressure externally applied along the b axis, resulting in the change of the axis b to the shorter axis a . The (100) domains change to a single domain by stress X z .…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation H. G. F. Wilsdorf; Apparatus for the Deformation of Foils in an Electron Microscope. Rev. Sci. In…
Summary: A revised taxonomic description of Phaeodactylum tricornutum Bohlin is presented, with special emphasis on the details of the silica valve, a structure hitherto unobserved. The features distinguishing P. tricornutum from Nitzschia closterium (Ehr.) W. Sm., with which it has frequently been confused, are summa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of Binary Mixtures as a Function of Composition.T. Ling and Matthew Van WinkleCite this: Ind. Eng. Chem. Chem. Eng. Data Series 1958, 3, 1, 88–95Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCommunications - Preparation of Oxaziranes by Irradiation of NitronesJ Splitter and M CalvinCite this: J. Org. Chem. 1958, 23, 4, 651Publication Date (Print):April 1, 1958Publication History Published online11 June 2003Published inissue 1 April 1958https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCombustion of Metals in OxygenA. V. Grosse and J. B. ConwayCite this: Ind. Eng. Chem. 1958, 50, 4, 663–672Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https://pubs.acs.org/doi/10.1021/ie50580a040https://doi…
Abstract Stress relaxation in the systems PVAc (polyvinyl acetate)‐water, PVAc‐methanol, PMA (polymethyl acrylate)‐water, and PMA‐methanol was measured at several temperatures above the glass‐transition points of the pure polymers in ranges of sufficiently low concentrations of diluents. It was found that the time‐con…
Abstract Polyvinyl chloride when heated loses HCl, presumably by a “zipper” mechanism. The loss of each molecule of HCl from the polymer results in the formation of a double bond, which activates adjacent chlorine and causes the decomposition reaction to propagate along the resin chain. Virgin and degraded resins were…
A theory of the broadening of multiplet components in magnetic resonance spectra of coupled nuclei due to electric quadrupole spin-lattice relaxation is presented. It is shown that the broadening of the components of the 1:1:1 triplet for nuclei of spin 1/2 coupled to a nucleus of spin 1, is 3/2 as great for the outer…
Single crystals of nickel (purities 99.98% and 99.4%) have been deformed in tension at various temperatures between 4.2°K and 300°K. Shear stress-shear strain relations have been determined as well as the reversible change of flow stress with temperature. The work-hardening parameters obtained are discussed in terms o…