Materials Literature
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Abstract A study was conducted to identity factors contributing to the difficult removal of used motor oil from textile materials by detergency. Infrared spectroscopy and gel permeation chromatography of used motor oil showed that the oil was a saturated aliphatic hydrocarbon with molecular weight around 950. X‐ray an…
Abstract The development of Cyclotella ocellata P antocsek was studied systematically in the eutrophic, dimictic hardwater Lake Dagow from March to October, 1994. Cyclotella ocellata was the most important centric diatom in the lake with a maximum cell density of 6 × 10 6 cells 1 −1 . The seasonal development, charact…
This paper deals with the irradiation behavior of the oxide dispersion strengthened (ODS) ferritic alloy DT2203Y05, a 13% Cr ferritic alloy strengthened by a fine dispersion of yttrium and titanium oxides. This alloy was irradiated up to 81 dpa in Phénix as fuel pin cladding. The profilometry measurements confirm its…
Research Article| August 01, 1999 Shocking rocks by cavitation and bubble implosion John G. Spray John G. Spray 1Impact Geology Group, Department of Geology, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada Search for other works by this author on: GSW Google Scholar Geology (1999) 27 (8): 695–6…
Chemical or electrochemical oxidation of substituted dithieno[3,4-b:3′,4′-d]thiophenes provides polymers with defined regiochemical structures. These materials have lower bandgaps (0.7-0.9 eV) than the unsubstituted fused heteroarene. Potential cycling of the 1,3-dimethyl substituted polymer film shows repetitive p- a…
A novel conjugated polymer containing carboxylic acid and 2-[2-(2-methoxyethoxy)ethoxy]ethoxy substituents which is soluble in both organic solvents and aqueous bases is synthesized.
Most modeling and experimental characterization of interconnect reliability is focussed on simple straight lines terminating at pads or vias. However, laid-out integrated circuits often have interconnects with junctions and wide-to-narrow transitions. In carrying out circuit-level reliability assessments it is importa…
Room-temperature absorption and reflectivity spectra of MnPSe3 seleniophosphate crystals have been analyzed from 1.0 to 5.5 eV. A general consistency has been found between the two types of data. From the absorption data an optical energy gap of 2.27 eV was deduced for this compound, in agreement with the literature.…
Temperature dependence of fracture behavior in two representative oxide ceramics, 3 mol%Y2O3-partially stabilized ZrO2 and pure Al2O3, was investigated to explore the high-temperature deformation mechanisms associated with ceramic superplasticity. Both the zirconia and alumina ceramics were found to show apparent brit…
In this paper, we have studied the effect of high-resistance SnO2 buffer layers, deposited by low-pressure chemical-vapor deposition, on CdS/CdTe device performance. Our results indicate that when CdS/CdTe devices have a very thin layer of CdS or no CdS at all, the i-SnO2 buffer layer helps to increase device efficien…
It has been studied how partial substitution of formally 3d 4 Fe IV ions by 3d 0 Ti IV ions influences the charge-disproportionation state and magnetism in Sr 3 Fe 2 O 7 . For this purpose Ruddlesden-Popper-type phases Sr 3 Fe 2–x Ti x O 7–y have been synthesized from the oxides and, in order to reach high oxygen cont…
We investigate possible influences of substrate constraints on the phase evolution of thin films synthesized from liquid precursors. MgO films are formed on Si (111) substrates by spin casting an acetate-substituted magnesium ethoxide liquid precursor. The phase evolution and crystallinity of the films are tracked as…
It has been demonstrated that intramolecular hydrogen bonding in two classes of dichroic azo dyes has a generally detrimental effect on order parameter in a nematic liquid crystal host. Derivatives of 4-(N,N-diethylamino)-4′-nitroazobenzene with hydroxy groups intramolecularly hydrogen bonded to the azo group show low…
Two new octanuclear Cr(III) carboxylate complexes are reported illustrating a temperature dependent route to high nuclearity species.
This paper describes some of the authors' practical experiences in the on-line measurement of partial discharges in medium voltage motor and generator stator windings. Economic considerations are discussed as well as the use of traditional and nontraditional sensor applications. Comparisons and practical recommendatio…
Porous polyimide films were prepared by 2 steps. The first step is the preparation of poly(urethane-imide) films by a reaction between phenol-terminated polyurethane prepolymer and poly(amide acid). Polyurethane prepolymer was prepared from the reaction of polyethylene adipate and hexamethylenediisocyanate. Poly(amide…
This paper presents the latest results of continuous investigations of cable insulations degradation of crosslinked polyethylene (XPLE) and ethylene-propylene with rubber based formulation (EPR) when subjected to electric stress and heating in the presence of water or water vapour. The paper deals with water absorptio…
The Insulated Conductors Committee of the Power Engineering Society at a recent meeting recognizes Al Gilbert and Frank Precopio, the two inventors of chemically crosslinked polyethylene. Because of the historic significance for insulation technology, the remarks made by these two inventors are reproduced in this maga…
The amazing oxygen exchange properties within the Ce2Sn2O7–Ce2Sn2O8 pyrochlore solid solution were investigated by means of in situ neutron diffraction experiments. The structural modification of the Ce2Sn2O7 phase heated under oxygen up to 1000 °C was followed on the basis of the neutron diffraction patterns, continu…
Lattice energy minimization techniques have been used to study the 2D molecular organization of [Ru(bpy)3]2+ and [Ru(phen)3]2+ confined in the interlamellar space of low charged smectites with respect to the stereochemistry of the pillars and the charge distribution within the host. The simulation results underline th…