Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBase Exchange of the Clay Mineral Montmorillonite for Organic Cations and its Dependence upon Adsorption due to van der Waals Forces.Sterling B. HendricksCite this: J. Phys. Chem. 1941, 45, 1, 65–81Publication Date (Print):January 1, 1941Publication History Published online1…
Potassium dihydrogen phosphate contains phosphate groups connected by hydrogen bonds. Different possible arrangements of the hydrogens result effectively in different orientations of the (H2PO4)— dipoles. Since these have the lowest energy when pointing along the axis of the crystal, there is a tendency toward spontan…
Abstract A survey has been made of the X-ray crystallography of some eighty sterol derivatives belonging mainly to the cholesterol and ergosterol series but including also calciferol and other photoderivatives of ergosterol and some higher plant and animal sterols. The measurements are recorded in four tables and incl…
Abstract Metal films of high and reproducible catalytic activity were obtained by condensation of their vapours on glass at any desired temperature. The catalytic activity was measured by the hydrogenation of ethylene. The crystal structure of these films was investigated by electron diffraction. By controlling the pr…
The method of complex eigenvalues is generalized to many dimensional problems by means of the scattering matrix. It is essential to allow for the existence of a background matrix on which the resonance is superposed. The "radioactive state" (i.e., the state with complex energy for which waves in all disintegration cha…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNylon as a Textile FiberG. P. HoffCite this: Ind. Eng. Chem. 1940, 32, 12, 1560–1564Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940https://pubs.acs.org/doi/10.1021/ie50372a007https://doi.org/10.1021/ie5…
Seven of the better known specific-refraction ratios were examined for their comparative appl,icability to glass. It is shown by a comprehensive statistical treatment of available data (including many new data) that, of these ratios, only the Gladstone-Dale possesses to a satisfactory degree each of the following desi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNatural Protein-Base Spun FibersF. C. AtwoodCite this: Ind. Eng. Chem. 1940, 32, 12, 1547–1549Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940https://pubs.acs.org/doi/10.1021/ie50372a003https://doi.org/1…
Abstract In considering existing information on the mechanical properties of raw rubber, it is not generally possible to distinguish between the effects of elastic and of plastic deformation. In the experiments described great care was taken to secure the complete removal of elastic strain, after stretching to various…
THE object of this study is the development of a quantitative theory of hysteresis-motor torque, especially in relation to magnetic properties and dimensions. The theory is interpreted physically in an idealized case, and applied to a particular motor to verify the result experimentally.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSterols. CXII. Sapogenins. XLI. The Preparation of Trillin and its Conversion to ProgesteroneRussell E. Marker and John KruegerCite this: J. Am. Chem. Soc. 1940, 62, 12, 3349–3350Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo Borohydrides. II. Beryllium BorohydrideAnton B. Burg and H. I. SchlesingerCite this: J. Am. Chem. Soc. 1940, 62, 12, 3425–3429Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940https://pubs.acs.org/…
THE object of this study is the development of a quantitative theory of hysteresis-motor torque, especially in relation to magnetic properties and dimensions. The theory is interpreted physically in an idealized case, and applied to a particular motor to verify the result experimentally.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo Borohydrides. I. Aluminum BorohydrideH. I. Schlesinger, R. Thomas Sanderson, and A. B. BurgCite this: J. Am. Chem. Soc. 1940, 62, 12, 3421–3425Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940http…
The magnetic susceptibility of the anhydrous chlorides of the iron group have been studied as a function of field strength up to 32,000 gauss and as a function of temperature down to 13.9\ifmmode^\circ\else\textdegree\fi{}K. Those compounds whose room temperature susceptibility characteristic indicates a positive Curi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo Borohydrides. III. Lithium BorohydrideH. I. Schlesinger and Herbert C. BrownCite this: J. Am. Chem. Soc. 1940, 62, 12, 3429–3435Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940https://pubs.acs.or…
Abstract Thermische und Röntgen‐Analyse zeigen, daß im System NaCl/MgCl 4 zwei inkongruent schmelzende Verbindungen (NaMgCl 4 und Na 2 MgCl 4 ) bestehen.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCotton Fibers Constitution, Structure, and Mechanical PropertiesR. F. NickersonCite this: Ind. Eng. Chem. 1940, 32, 11, 1454–1462Publication Date (Print):November 1, 1940Publication History Published online1 May 2002Published inissue 1 November 1940https://pubs.acs.org/doi/1…
The mineral compositions of the clays from a red earth and a black cotton soil from Hyderabad, Deccan State, India, occurring in close proximity in the field are determined. Both soils are derived from the same or from very similar parent rocks, a coarsely crystalline granite or gneiss. For both soils there is practic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Reactions Relating to Carbohydrates and Polysaccharides. LXI. The Mechanism of Polymerization of Ethylene Oxide1Stanley Perry and Harold HibbertCite this: J. Am. Chem. Soc. 1940, 62, 10, 2599–2604Publication Date (Print):October 1, 1940Publication History Publishe…