Materials Literature
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The four isomers of hydroxycitrate have been tested as substrates and inhibitors for citrate synthase, citrate lyase, and ATP citrate lyase. None of the isomers served as a substrate for citrate synthase and they were moderate to weak inhibitors of this reaction. Of the four isomers, only (pncit)-(2S)-2-hydroxycitrate…
Valence band X-ray photoelectron spectra of the rutile oxides TiO 2 , RuO 2 , and IrO 2 show a distinct evolution as a function of the increasing number of metal d -electrons. The observations are found to be in excellent agreement with recent theoretical models. Intensity analysis and photo-ionization cross sections…
Journal Article Thermal Analysis of Minerals Get access Thermal Analysis of Minerals. Dumitru N. Todor, translated by Sergiu Marcus. Abacus Press, Tunbridge Wells, Kent, UK, 1976. Distributed by ISBS, Inc., PO Box 555, Forest Grove, OR 97116. 256 pp. Price $32.50. Millard Maienthal Millard Maienthal Division of Drug C…
The article is a review of band-structure calculations for transition metal compounds (carbides and nitrides, layer compounds, A15 structures, and others).
A glass‐forming region was found in the system at a mole ratio ≦3. Glass transition temperatures and conductivities at 25°C for the glasses are, respectively, expressed by where , , and are mole fractions of each component in the glass. These equations show that and are primarily governed by the content. From the resu…
Craze extension measurements have been made: (α) in unoriented commercial glassy polystyrene and polymethyl-methacrylate under uni-axial tension at both room temperature and – 20°C; and (6) in a special grade of unoriented polystyrene free of any additives, under a large variety of multi-axial states of stress, also a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of oxygenation of reduced sulfur species in aqueous solutionDennis J. O'Brien and Francis B. BirknerCite this: Environ. Sci. Technol. 1977, 11, 12, 1114–1120Publication Date (Print):November 1, 1977Publication History Published online1 May 2002Published inissue 1 No…
Although high‐temperature strength loss in ceramics such as silicon nitride has been attributed to the presence of intergranular amorphous phases, until now no direct proof has been offered. The present paper describes high resolution electron microscopy lattice imaging studies of an MgO fluxed hot‐pressed silicon nit…
An analysis of multidimensional melting is performed which takes account of natural convection induced by temperature differences in the liquid melt. Consideration is given to the melt region created by a heated vertical tube embedded in a solid which is at its fusion temperature. Solutions were obtained by an implici…
A series of epoxy resin based tissue substitutes, simulating adipose tissue, bone, breast, lung, muscle and skin is described. Details of the physical radiation characteristics of the formulated systems are given, together with the manufacturing procedures. The versatility of the range of substitutes is discussed in t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Anisotropic Solutions, and Fibers of Poly(1,4-benzamide)S. L. Kwolek, P. W. Morgan, J. R. Schaefgen, and L. W. GulrichCite this: Macromolecules 1977, 10, 6, 1390–1396Publication Date (Print):November 1, 1977Publication History Published online1 May 2002Published i…
Patterns in the plane from Kepler to the present, including recent results and unsolved problems.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Properties of Aromatic and Extended Chain PolyamidesP. W. MorganCite this: Macromolecules 1977, 10, 6, 1381–1390Publication Date (Print):November 1, 1977Publication History Published online1 May 2002Published inissue 1 November 1977https://pubs.acs.org/doi/10.1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphorus-31 NMR studies on molybdic and tungstic heteropolyanions. Correlation between structure and chemical shiftRene Massart, Roland Contant, Jean Marc Fruchart, Jean Pierre Ciabrini, and Michel FournierCite this: Inorg. Chem. 1977, 16, 11, 2916–2921Publication Date (Pr…
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
The Protein Data Bank is a computer-based archival file for macromolecular structures. The Bank stores in a uniform format atomic co-ordinates and partial bond connectivities, as derived from crystallographic studies. Text included in each data entry gives pertinent information for the structure at hand (e.g. species…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe crystal structure of Prussian Blue: Fe4[Fe(CN)6]3.xH2OH. J. Buser, D. Schwarzenbach, W. Petter, and A. LudiCite this: Inorg. Chem. 1977, 16, 11, 2704–2710Publication Date (Print):November 1, 1977Publication History Published online1 May 2002Published inissue 1 November 1…
The effect of Brownian motion of particles in a statistically homogeneous suspension is to tend to make uniform the joint probability density functions for the relative positions of particles, in opposition to the tendency of a deforming motion of the suspension to make some particle configurations more common. This s…
Dielectric and elastic constants of $\mathrm{K}{\mathrm{Ta}}_{1\ensuremath{-}x}{\mathrm{Nb}}_{x}{\mathrm{O}}_{3}$ are presented as a function of $x$ and of the temperature. For $x=8\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, the system exhibits the characteristics of a ferroelectric at the displacive li…
Effective charges, q, in ternary and complex systems are estimated. The semiempirical method of Suchet (1965) is extended to ternary compounds such as manganites and ferrites while the semi-experimental method of Gianturco and Coulson (1968) is applied to complex Co-Zn ferrites and cobalt complexes. An attempt is made…