Materials Literature
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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…
Bostwick H. Ketchum; A Treatise on Limnology, Vol. I. Geography, Physics and Chemistry, AIBS Bulletin, Volume 8, Issue 2, 1 April 1958, Pages 47–48, https://doi
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsomerism of Some α-Hydroxysilanes to Silyl EthersA. G. BrookCite this: J. Am. Chem. Soc. 1958, 80, 8, 1886–1889Publication Date (Print):April 1, 1958Publication History Published online1 May 2002Published inissue 1 April 1958https://doi.org/10.1021/ja01541a026RIGHTS & PERMI…
The electrical conductivity and thermoelectric power of the semiconductor Bi 2 Te 3 have been measured between 150°K and 300°K. n-type and p-type samples with a wide range of carrier concentration have been included. Most samples have shown extrinsic conduction and have been partially degenerate over at least part of…
The behavior of an infinitely long flexible filament after transverse impact is treated theoretically. The filament is assumed to have a tension-strain curve which is always concave downwards and to have no short time creep or stress relaxation effects. Under most conditions the impact initiates a variable strain that…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Application of Thermoanalytical Techniques to Reaction Kinetics: The Thermogravimetric Evaluation of the Kinetics of the Decomposition of Calcium Oxalate MonohydrateEli S. Freeman and Benjamin CarrollCite this: J. Phys. Chem. 1958, 62, 4, 394–397Publication Date (Print):…
Epoxy resins are suitable media for embedding for electron microscopy, as they set uniformly with virtually no shrinkage. A mixture of araldite epoxy resins has been developed which is soluble in ethanol, and which yields a block of the required hardness for thin sectioning. The critical modifications to the conventio…
The temperature dependence of the crystalline anisotropy constants of iron, cobalt, and nickel is discussed. It is shown that Zener's result for iron (i.e., the first anisotropy constant varies as the tenth power of the magnetization) also may be derived from molecular field theory. In cobalt a satisfactory agreement…