Materials Literature
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Abstract It is a requirement for all future nuclear stations in the U.K. that they can be shut down safely in the event of an earthquake. The AGR reactor core structures have been mathematically modelled using non‐linear techniques which are implemented in the three‐dimensional computer code AGRCOR. Experimental verif…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemistry of iron porphyrins under a carbon monoxide atmosphere. Interactions between carbon monoxide and pyridineC. Swistak and K. M. KadishCite this: Inorg. Chem. 1987, 26, 3, 405–412Publication Date (Print):February 1, 1987Publication History Published online1 May…
Abstract The dissolution kinetics of alumina in aqueous solution was studied in batch and continuous systems. Data were correlated by the kinetic equation C(t) = 1 − exp(− kt α ). The parameter k was a function of temperature and acid concentration, while the parameter α remained constant. The temperature variation of…
Abstract The modification of epoxy resins by means of carbon dioxide is presented. The resulting resins contained different amounts of cyclic carbonates (1,3‐dioxolane‐2‐one rings) instead of a part of epoxy groups. The effect of the cyclic carbonate content on viscosity, gel time, peak exotherms, and crosslinking ext…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal chemistry pathways of substituted anisolesAntti I. Vuori and Johan B-son BredenbergCite this: Ind. Eng. Chem. Res. 1987, 26, 2, 359–365Publication Date (Print):February 1, 1987Publication History Published online1 May 2002Published inissue 1 February 1987https://pubs…
The dynamics of exciton motion in tetramethylammonium manganese (II) trichloride (TMMC) are investigated in the presence of copper (II) and cobalt (II) traps. Manganese luminescence decay curves are analyzed using several models and at various trap concentrations and temperatures, with the conclusion that trapping doe…
Abstract Between 1981 and 1983, a working Group of USTC‐1.3 of the CIE prepared new recommendations giving for the first time detailed instructions for the calculation of CIE tristimulus values, for inclusion in Publication CIE No. 15.2, a revision of the CIE document on colorimetry first published in 1971. The new re…
Creep characteristics of Zircaloy-4 stress-releaved cladding under internal pressure were studied. Creep tests were conducted under 21 conditions chosen from the temperature range of 603∼693 K and the hoop stress of 49∼314 MPa. The maximum accumulated test period was 3,000 h. Diametral creep data were analyzed by sepa…
Cerium‐activated silica (SiO 2 ) glasses were prepared by plasma torch chemical vapor deposition (CVD). In Ce‐doped SiO 2 glasses, most Ce exists as Ce 4+ ions; the remaining small amount of Ce 3+ ions exhibits a broad fluorescence spectrum with a large Stokes shift, ∼9600 cm ‐1 , from the excitation spectrum peak of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of the bis(2,2'-bipyridine)dicyanoruthenium(II) and bis(2,2'-bipyridine)(2,2'-isobiquinoline)ruthenium(II) luminescenceF. Barigelletti, A. Juris, V. Balzani, P. Belser, and A. Von ZelewskyCite this: J. Phys. Chem. 1987, 91, 5, 1095–1098Publication Date…
Abstract The first stage of lateritic weathering of pyroxenes in the Niquelandia area, Brazil, leads either to Fe-rich products or to a phyllosilicate clay. In relatively unfractured parent rock the phyllosilicate clay contains Ni-rich smectites, the atomic ratio of Ni: octahedral cations ranging from 0.3 to 0.5. Thes…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational spectra of magnesium-sodium-borate glasses. 1. Far-infrared investigation of the cation-site interactionsE. I. Kamitsos, G. D. Chryssikos, and M. A. KarakassidesCite this: J. Phys. Chem. 1987, 91, 5, 1067–1073Publication Date (Print):February 1, 1987Publication H…
Infrared properties and electro-optic effects of nematic liquid crystals are reviewed. Physical origins and characterization techniques of infrared birefringence and rotatory power are described. Advantages and disadvantages of three device configurations--parallel, twisted, and perpendicular alignments--are analyzed.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of a novel cross-conjugated conductive polymer precursor: poly(3,4-diisopropylidenecyclobutene)Timothy M. Swager and Robert H. GrubbsCite this: J. Am. Chem. Soc. 1987, 109, 3, 894–896Publication Date (Print):February 1, 1987Publication History Publis…
Polyimides derived from condensation of pyromellitic dianhydride with various diamines have been shown to be electrochemically active. Films of these materials coated on the surface of solid electrodes, immersed in electrolyte solutions of dipolar aprotic solvents undergo two distinct reversible redox processes, invol…
Abstract Various blends of ultra‐high molecular weight polyethylene (UHMWPE) with linear low‐density polyethylene (LLDPE) were prepared in an internal (Banbury type) mixer, a static mixer, and by solvent blending. Two mixing techniques, namely simultaneous and sequential loading methods, were employed with the interna…
Bubble fields generated in a liquid (water) irradiated with sound of high intensity are investigated by high-speed holographic cinematography at framing rates up to 69?0 holograms per second. The period-doubling route to chaos found previously in the sound output from the liquid also shows up in the bubble oscillation…
In glasses, the largest observed value of nonlinear refractive index n2 is currently about 0.1 X10-11 esu. Changes in n2 are dependent on the third-order electronic polarization, which can be estimated from the linear electronic polarizability or from the refractive index and Abbe number. Theoretical calculations of n…
An analytical formulation is presented for the computation of scattering and transmission by general anisotropic stratified material. This method employs a first-order state-vector differential equation representation of Maxwell's equations whose solution is given in terms of a <tex xmlns:mml="http://www.w3.org/1998/M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVariable-temperature magnetic, spectral, and x-ray crystallographic studies of "spin-crossover" iron(III) Schiff-base-Lewis-base adducts. Influence of noncoordinated anions on spin-state interconversion dynamics in [Fe(salen)(imd)2]Y species (Y = ClO4-, BF4-, PF6-, BPh4-; im…