Materials Literature
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The X-ray photoelectron spectra of a range of gold complexes with halide, phosphine, and thiol ligands is reported. Gold(I) and gold(III) complexes can readily be distinguished for each type of ligand. The use of this result is illustrated by following the decomposition of [NEt4][AuBr4] on exposure to the X-ray beam.…
Single crystals of poly(tetramethylene adipate) (PTMA,-[O-(CH2)4-O-CO-(CH2)4-CO]n-) have been prepared by precipitation from solution and by epitaxial deposition on suitable substrates. The crystals grown from solution exhibited two distinct morphologies: most of the crystals were diamond-or truncated diamond-shaped,…
Dose survival curves of lactate dehydrogenase irradiated under aerobic and anaerobic conditions show a sensitizing effect of oxygen for the inactivation of the enzyme. The oxygen effect in the radiolysis of lactate dehydrogenase was analysed by gel filtration and polyacrylamide gel electrophoresis. Under anaerobic con…
An infinite summation method is used to obtain the intrinsic photoemission spectrum of a conduction electron in the sudden limit. It is predicted that an electron at the bottom of the conduction band should have an asymmetry index comparable to that of a core electron and that the strengths of its plasmon satellites s…
The crystal structure of the title compound has been determined from three-dimensional X-ray diffractometer data. Crystals are triclinic, space group P, with Z= 2 in a unit cell of dimensions a= 12.027(6), b= 12.571(8), c= 8.690(5)Å, α= 96.04(5), β= 94.80(5), and γ= 68.20(5)°. The structure was solved by direct and Fo…
Abstract Aus einer Knudsenzelle verdampftes SiO reagiert mit O‐Atomen (Mikrowellenanregung) in einer Argonmatrix zu molekularem SiO 2 . Banden um 1400 cm −1 im IR‐Argon‐Matrixspektrum werden der asymmetrischen Valenzschwingung (ν 3 ) der Isotopenmoleküle Si 16 O 2 , Si 16 O 18 O und Si 18 O 2 zugeordnet. In einer Argo…
An X-ray diffraction method for determination of the degree of crystallinity of indomethacin was established, and the transition rate of indomethacin from amorphous to crystalline form was investigated. The transition of the amorphous form to crystalline form at 20°, 30°and 40°followed first-order kinetics and the Arr…
It has previously been shown that the ordinary liquid–glass transition is just one example of a class of “glass transitions” due to loss of equilibrium which may occur widely in metastable phases of condensed matter. In the present paper, glass-transition phenomena occurring in stable crystalline phases of SnCl2.2H2O,…
An analysis is given of the possible advantages of a photoelectron spectrometer based upon the properties of the axially symmetric inhomogeneous magnetic field of a superconducting solenoid. The consequences of electron motion along the solenoid axis are discussed and it is shown that this can lead to a novel high-res…
We present preliminary measurements of the electrical conductivity of a composite made of small conducting rods in an insulating matrix. It constitutes a model material for studying the effect of anisotropy on percolation as a function of particle length to diameter ratio. We can interpret our results, especially the…
ABSTRACT THIN-LAYER drying and rewetting data for shelled yellow corn have been compiled from all available sources. A thin-layer drying equation was developed us-ing these data with air temperature, air humidity, air velocity and corn initial moisture content as the indepen-dent variables. A thin-layer rewetting equa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIron-nitrogen bond lengths in low-spin and high-spin iron(II) complexes with poly(pyrazolyl)borate ligandsJ. D. Oliver, D. F. Mullica, B. B. Hutchinson, and W. O. MilliganCite this: Inorg. Chem. 1980, 19, 1, 165–169Publication Date (Print):January 1, 1980Publication History…
Abstract Solution and solid‐state thermal cis‐trans isomerization of cis–transoidal polyphenylacetylene was investigated. At temperatures higher than 120°C, cis‐trans thermal isomerization in solution is accompanied by cyclization, aromatization, and scission of the polymer chain. Both spectral and kinetics data showe…
The continuous stretching of viscous liqu ids to form fibers is a primary manufacturing process in the textile industry. The mechanics of certain sheet formation and sheet and wire coating operations are quite similar, as are the mechanics of the formation of glass fibers. Most published experimental and theoretical w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of boron acid complexation reactions. Formation of 1:1 boron acid-ligand complexesLucia Babcock and Richard PizerCite this: Inorg. Chem. 1980, 19, 1, 56–61Publication Date (Print):January 1, 1980Publication History Published online1 May 2002Published inissue 1 Janua…
The tensile and Izod impact strength of polycarbonate (PC) based polyethylene (PE) and polystyrene (PS) blends has been examined. The tensile strength can best be described as being proportional to an exponential function of the volume fraction of PE and the first power of volume fraction of PS. The variation of Izod…
La takovite, un des membres du groupe des pyroaurites qui contient du nickel a été, ainsi que son minéral apparenté l'hydrotalcite, soumise à des traitements, à 25 °C, par des solutions, 0,1 M de HCl, HNO₃, H₂SO₄, NiSO₄, Al₂(SO₄)₃ et KOH. La diffraction des rayons X et la spectroscopie aux infrarouges appliquées aux m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State Transition of Poly(butylene terephthalate) Induced by Mechanical DeformationKohji Tashiro, Yuzo Nakai, Masamichi Kobayashi, and Hiroyuki TadokoroCite this: Macromolecules 1980, 13, 1, 137–145Publication Date (Print):January 1, 1980Publication History Published on…
Michiyoshi TANAKA, Ryuichi SAITO, Katsuyoshi UENO, Yoshiyasu HARADA; Large-Angle Convergent-Beam Electron Diffraction, Journal of Electron Microscopy, Volu
Raman data have been obtained for vitreous and molten B2O3 from −196 to 1594 °C. A ΔH° of 6.4±0.4 kcal/mole boroxol was obtained from the temperature dependence of ratios of integrated Raman intensities. This heat is thought to correspond to the transformation of BO3 triangles in boroxol rings, to BO3 triangles in a r…