Materials Literature
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Journal Article Matrix Algebra for the Biological Sciences Get access Matrix Algebra for the Biological Sciences. By Searle S. R.. John Wiley & Sons, Inc., New York, 1966. 296 pp., $9.95. Frederick E. Smith Frederick E. Smith Search for other works by this author on: Oxford Academic Google Scholar BioScience, Volume 1…
Electron transmission microscopy and diffraction reveal that the precipitation of {100} disc-shaped G.P. zones in a copper-2% beryllium alloy is accompanied by the appearance of striations parallel to the traces of {110} planes in the microstructure and < 110 > relrods normal to these planes in diffraction patterns. U…
Abstract Aromatic dinitriles cyclize to form aromatic polymers containing the s ‐triazine ring. In this paper, these polymers are compared thermally with each other and with aromatic melamine polymers prepared via the aromatic diamine and cyanuric chloride. One perfluoroaromatic melamine polymer was prepared and compa…
Hall-effect and electrical conductivity measurements were performed on Cu 2 O single crystals both before and after heating the samples in vacuo at temperatures ranging from 200 °C to 800 °C. Both the absolute values of the mobility and the conductivity, as well as their temperature dependence, were found to be strong…
Basic theoretical ideas on the properties of two special dislocation configurations, dislocation dipoles and prismatic dislocation loops, are presented. Some of the author's recent results, based mostly on the application of the model of elastic continuum on these crystalline defects, are also given. The influence of…
Abstract In previous work it was found that Cl repulsion by arid‐zone soi's from a solution having a high and uniform concentration of Cl is closely related to surface area as measured by ethylene glycol retention. Based on this information, a measurement of Cl repulsion has been incorporated into the NaOAc method for…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Synthesis of Aluminoles via the Addition and Cyclization Reactions of Arylaluminum Compounds1John J. Eisch and William C. KaskaCite this: J. Am. Chem. Soc. 1966, 88, 13, 2976–2983Publication Date (Print):July 1, 1966Publication History Published online1 May 2002Published…
Abstract The clay mineral composition is one of the factors that affect the physical properties of soils, and a knowledge of it is required to promote a fuller understanding of the origin of these properties. The relationships between the clay content and the plastic and liquid limits of natural montmorillonitic and k…
Abstract The water vapour transmission properties of selected hydrophilic, lipophilic, and mixed hydrophilic-lipophilic polymer systems, cast as free films, have been examined as a function of time, film thickness, plasticiser concentration, and film formulation. An inverse linear relationship was established between…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT2-Amino-5-Substituted 1,3,4-Oxadiazoles and 5-Imino-2-Substituted Δ2-1,3,4-Oxadiazolines. A Group of Novel Muscle RelaxantsHarry L. Yale and Kathryn LoseeCite this: J. Med. Chem. 1966, 9, 4, 478–483Publication Date (Print):July 1, 1966Publication History Published online1 Ma…
Persistent slip bands in fatigued OFHC copper single crystals have been examined using both replica and transmission electron microscopy techniques. In general, the dislocation structure below persistent slip bands is found to consist of rows of elongated cells within a region extending at least 170 microns below the…
Adiabatic bulk modulus, B s , of polycrystalline MgO and Al 2 O 3 was measured from 298° to 1473°K using the resonance technique. The Grüneisen constant, calculated from the measured bulk modulus, was constant over the whole temperature range (1.53 for MgO and 1.34 for Al 2 O 3 ). Another important parameter, , is con…
The theory and equations are developed for the scattering pattern of a dielectric cylinder of infinite length and arbitrary cross-section shape. The harmonic incident wave is assumed to have its electric vector perpendicular to the axis of the cylinder, and the fields are assumed to have no variations along this axis.…
This review is mainly concerned with octahedrally co-ordinated ions with an unfilled d shell. The wave functions of the magnetic electrons are considered first, the covalency being taken into account by admixing ligand s and p orbits into the central ion d orbits. The origin of these admixtures is discussed in a simpl…
In his paper "Mineralbestand und Strukturen der Graphit-und Sulfideinschlsse in Eisenmeteoriten" EL GORESY 1 reported the presence of a new Cu-, Cr-sulfide in some graphite-troilite nodules from the Odessa meteorite. No optical or analytical data were, however, published, since the small size of the grains observed di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeteropoly Blues. I. Reduction Stoichiometries and Reduction Potentials of Some 12-TungstatesMichael T. Pope and Gideon M. Varga Jr.Cite this: Inorg. Chem. 1966, 5, 7, 1249–1254Publication Date (Print):July 1, 1966Publication History Published online1 May 2002Published iniss…
Many solid state reactions can be represented by equations of the type F (α) = kt , where α is the fraction of material reacted in time, t. These equations can be expressed in the form F (α) = A ( t/t 0.5 ) where t 0.5 is the time for 50% reaction and A is a calculable constant depending on the form of F (α). Numerica…
Stereological principles provide efficient and reliable tools for the determination of quantitative parameters of tissue structure on sections. Some principles which allow the estimation of volumetric ratios, surface areas, surface-to-volume ratios, thicknesses of tissue or cell sheets, and the number of structures ar…
Abstract In discussing the structure of polyvinyl chloride as a function of the polymerization temperature, the effect of the stereoregularity and the branching should be principally taken into consideration. In the present work, in order to investigate the effect of the polymerization temperature on these two structu…
Abstract An der Oberfläche von Festkörpern sind häufig strukturfremde Atome oder Atomgruppierungen gebunden. Die Chemie dieser „End‐Gruppen”︁ an der Festkörperoberfläche wird an einigen Beispielen besprochen. Bei Diamant und graphitischem Kohlenstoff und auch noch bei Siliciumdioxid sind die Fremdatome covalent gebund…