Materials Literature
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The problems connected with measuring the magnetic properties of electrical sheet steel under the condition of one-dimensional (alternating) and two-dimensional excitation (circular, elliptic, and alternating with rotation of the direction) are surveyed. Regarding the classical case of one-dimensional excitation, the…
A mixture of 4-butyl-4′-methoxyazobenzene (BMAB) and 4-n-pentyl-4′-cyanobiphenyl (5CB)([BMAB]/[5CB]= 0.03) undergoes an isothermal phase transition on pulse irradiation at 355 nm (10 ns fwhm), in which the relaxation from the nematic to the isotropic phase was completed within ∼ 100 ms as shown by time-resolved birefr…
A thermal molecular-beam system has been used to examine the oxidative dehydrogenation of methanol on the Cu(110) surface. The initial sticking probability for oxygen is 0.21 (±0.01) at room temperature and shows a near linear dependence of sticking coefficient on atomic coverage due to an island growth mechanism with…
The paper describes an experimental study of the rheology of concentrated latex under conditions where a secondary miminum in the interparticle pair potential is expected. Particular attention is given to the Bingham stress σB derived from steady-shear-flow data, which is taken as a measure of the additional or extra…
A setup has been developed by which one can measure magnetic power losses under arbitrary induction waveforms in the frequency range 1 Hz>
In this paper we present the results of atomistic simulation studies regarding aspects of the diffusion behaviour of Xe in UO2. The effects of a variable lattice stoichiometry and the charge state of the Xe are considered. It is found that although the sites at which Xe atoms are trapped differ markedly with stoichiom…
A series of linear heterotrinuclear complexes with a tris(dimethylglyoximato) metal(II) as bridging ligand, [LFeIII{µ-(dmg)3MII}FeIIIL](ClO4)2(M = Zn, Cu, Ni, Co, Fe, Mn), where L represents the cyclic triamine 1,4,7-trimethyl-1,4,7-triazacyclononane, has been synthesized and characterized by X-ray crystallography and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivativesJohn E. Frey, Anne M. Andrews, Daniel G. Ankoviac, Douglas N. Beaman, Louis E. Du Pont, Thomas E. Elsner, Susan R. Lang, Marian A. Oosterbaan Zwart, Rona…
Abstract
The solubilities of calcium hemicarboaluminate, calcium monocarboaluminate and calcium tricarboaluminate have been determined and the equilibrium phase diagram for the CaO-Al 2 O 3 -CaCO 3 -H 2 O closed system at 25°C has been calculated. Six isothermally invariant points have been located involving six stable hydrate…
A self-doped conducting polymer having alkanesulphonic acid groups on polythiophene has been directly synthesized from sodium 3-(3-thienyl)propanesulphonate 3 by chemical polymerization with FeCl3 in an aqueous medium; the resulting acid form of this polymer after work-up shows highly self-doped behaviour both in wate…
Glyoxal condensed with 1,4-diformyl-2,3,5,6-tetrahydroxypiperazie in the presence of sulfuric and nitric acids to give the title compound.We wish to repon 4.10-diniuo-2,6,8,12-letraoxa-4,lO-diazatetracyclo[5.5.0.~~~O~~'~ldodecan (2) as the fxst example of a dioxaazepane and the densest dinitramine (including dinitrami…
The kinetics of first-order diamagnetic phase transitions into a Condon domain phase, which may occur in normal metals under a strong magnetic field, is considered. Expressions for profile, velocity, and width of the interface between the homogeneous and diamagnetic domain phase are obtained. Critical sizes of cluster…
Uranium dioxide fuels irradiated in a commercial BWR during 1 to 4 cycles (burn-up: 6–28 GWd/t) have been annealed in an out-of-pile condition and the release rate of 85Kr was measured continuously. The annealing temperature ranged 1,500–1,800°C. The effects of temperature and burn-up have been studied on burst releas…
AC and impulse voltages were applied to needle electrode specimens modeling the interface of the semiconducting layer and insulation of XLPE (cross-linked polyethylene) cables. TEM (transmission electron microscope) photographs of minute trees (>
The structure and behaviour of Ru3(CO)12 supported on inorganic oxides such as V2O5, SiO2, TiO2, Al2O3, K-Al2O3, MgO and MnO2 have been studied by means of EXAFS, IR and TPD. Ru3(CO)12 was physisorbed on V2O5, SiO2, and TiO2, whereas [Ru3(CO)10(µ-H)(µ-O)] and [HRu3(CO)11]– were formed on Al2O3 and the basic supports M…
Abstract The ring‐opening polymerization of D, L ‐dilactide and an equimolar dilactide‐diglycolide mixture has been investigated. Conversion and molecular weight in the lactide bulk polymerization are determined not only by the kinetics of the primary ring‐opening reaction, but also by the concentration and extent of…
The catalytic behaviour of H5PV2Mo10O40 heteropoly acid in the oxidation of n-butane to maleic anhydride is analysed in relation to that of its partially salified Cs salt and their FTIR spectra, UV–VIS diffuse reflectance spectra, thermogravimetry and reducibility tests as well as solid state 51V NMR and EPR character…
The development of the various partial-discharge test methods as applied to cables, capacitors transformers, and rotating machines is examined in an historical context. Special emphasis is placed on various discharge pulse analysis techniques, although it is pointed out that integrated charge measurements should recei…
A graphite/polymer composite material was directly coupled with: 2014 aluminum (bare and hard-anodized), pure grade titanium, 316 stainless steel and monel. Samples were then immersed in natural seawater. The titanium couple was inactive. Stain less steel and monel changed behavior from noncorroding to crevice and pit…