Materials Literature
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This paper describes the engineering, construction and installation of the Exhaust Detritiation System for the JET Active Gas (Tritium) Handling Plant. Commissioning results without tritium indicated that the system has met the design requirements and operating parameters. Hydrogen and methane were fully oxidized. Dew…
Abstract The cellulose derivatives ethyl cellulose and ethyl‐hydroxyethyl cellulose (EHEC) have been studied by XPS in the form of solvent‐cast films. All the films, as well as a sample of cellulose used as a standard material, show significant surface degradation on irradiation in the time period consistent with XPS…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA fluxional binuclear nickel(I) complex and evidence for reversible A-frame formationLjubica Manojlovic-Muir, Kenneth W. Muir, William M. Davis, Hameed A. Mirza, and Richard J. PuddephattCite this: Inorg. Chem. 1992, 31, 5, 904–909Publication Date (Print):March 1, 1992Public…
Abstract Monovanadium derivatives of 12-molybdosulfate(VI) and 18-molybdodisulfate(VI), [S(VMo11)O40]3− and [S2(VMo17)O62]5−, have been prepared as tetrabutylammonium (n-Bu4N+) salts from a Mo(VI)–V(V)–H2SO4–CH3CN system. Both mixed molybdosulfate(VI) comlexes were characterized by their IR and UV spectra and their vo…
Thermal desorption spectroscopy was used to study an outgassing from silanol‐based spin‐on‐glass films with phosphorus doping, cured at a temperature range between 200 and 400°C. Primary desorption products were found to be water and ethylene. Thermal desorption studies using a ramped heating revealed distinct desorpt…
Surface-stabilized ferroelectric liquid crystals (SSFLC) with high-pretilt (about 15°) aligning film showed three types of states (C1U, C1T and C2) with different optical properties. The transmitted light of these states was calculated using the 4×4 matrix method, and the optical memory angle and transmission spectra…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereochemistry of ring-opening reactions of epoxide with aluminum and zinc porphyrins. Relation to the mechanism of ring-opening polymerizationYoshihiko Watanabe, Tomokazu Yasuda, Takuzo Aida, and Shohei InoueCite this: Macromolecules 1992, 25, 5, 1396–1400Publication Date…
Abstract The new mineral tooeleite occurs with pyrite, arsenopyrite, scorodite, and jarosite at the U.S. Mine, Tooele Country, Utah. Analysis by electron microprobe gave Fe 2 O 3 43.56%, As 2 O 5 38.61%, SO 3 7.24%, and H 2 O by the Penfield method 9.80%. For this analysis, the suggested formula is Fe 8-2 x 3+ [(AS 1-…
The author considers the computation of the electromagnetic axial forces on the windings of a step-up-generator transformer under unbalanced MMFs of the same phase by means of a finite element code. The unbalance between the MMFs of the same phase, which might be on the order of the nominal MMF, is caused by the high…
The improved T- Omega method is employed to calculate the three-dimensional transient eddy current field in large transformers, as well as the short-circuit electromagnetic forces acting on the transformer windings. The effects of the magnetic shielding and initial angles of currents are studied, and the nonuniform di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman spectroscopic studies of intercalated molybdate ions in layered metal hydroxidesJen Twu and Prabir K. DuttaCite this: Chem. Mater. 1992, 4, 2, 398–401Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https…
Abstract Photochromic behaviors of hemithioindigo (HT) derivatives in bilayer membrane matrices and related aqueous system are investigated. HT derivatives were incorporated into bilayer membrane matrices at a molar ratio to bilayer amphiphiles of 0.01. Under these conditions, HT amphiphiles having an ammonio group di…
A prototype hydride storage bed was fitted with strain gages to measure strains occurring in the stainless steel bed vessel caused by expansion of the storage powder upon uptake of hydrogen. The strain remained low in the bed as hydrogen was added, up to a bed loading of about 0.5 hydrogen to metal atom ratio. The str…
A comparison study of doxorubicin loading, release characteristics and stability within sodium and hydrogen forms of ion-exchange resin microspheres has been performed. It was demonstrated that resins in the Na+ form, although having lower drug loading capacity, showed similar release profiles to resins in the H+ form…
Abstract In recent years, grazing incidence angle attachments have been shown to be very useful in the phase identification of thin polycrystalline films. These devices are sold commercially as attachments to standard powder diffractometers. The attachment normally consists of a long soller slit assembly and a flat cr…
We develop a theoretical description of nuclear spin relaxation mediated by MRI contrast agents and transport processes in liposome systems. Such systems compartmentalize the physical space such that paramagnetic contrast agents, which enhance relaxation, are trapped in some subvolume. Due to diffusive transport acros…
The authors describe computational analyses and an experiment on thin plate deflection in a magnetic field. The authors show the governing equation for the eddy current and the deflection analyses of a thin plate, considering the coupling effect between the eddy current and the deflection under nonuniform magnetic fie…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEPR studies of a dinickel complex in its (II,II) and (II,III) oxidation statesTheodore R. Holman, Michael P. Hendrich, and Lawrence Que Jr.Cite this: Inorg. Chem. 1992, 31, 6, 937–939Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Publishe…
The pyrolysis of organoelemental polymerss provides a powerful route to high‐ppurity, high‐performance ceramics. The various factors influencing the production of low‐oxygen‐content ceramic fibers from polymeric silazanes are examined and the possibility of controlling the composition of the fibers by varying the pyro…
The optical properties of a thin metal film are derived, with a thin film defined as having a thickness smaller than the wavelength of the radiation and the skin depth. The derivation is based on the continuity equation for the electric field and on the energy balance for the incident, reflected, transmitted, and abso…