Materials Literature
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Relating Materials Properties to Structure: Handbook and Software for Polymer Calculations and Materials Properties lays the foundation for an understanding of the basic structure of materials and the significant distinguishing features between major classes. It provides a method of comparison between the structure of…
Investigation of Keggin ion salts prepared by partial hydrolysis of Al3+ and Fe3+ ions followed by addition of sodium sulfate solution to generate the sulfate salt of the Keggin ion was carried out. Characterization of the salts was performed by classical analytical methods and FTIR and XP spectroscopy. Incorporation…
In order to determine feasibility of SF/sub 6/ gas insulated equipment for HVDC substation technology, a testpole was built and subjected to a long term test of 2 years. The test pole consisted of slightly modified commercially available 550 kV AC and 800 kV AC gas insulated components. The components were SF/sub 6/-a…
An investigation into the structure of three metaphosphate glasses, Mg(PO3)2, Zn(PO3)2 and Pb(PO3)2, using molecular dynamics simulations is presented. The phosphate network was found to consist of long linear chains of PO4 tetrahedral units. This type of structure exists in the three metaphosphate glasses, indicating…
This paper discusses the results of partial discharge measurements in medium voltage power cables losing oscillating test voltages. In particular, the sensitivity and the reproducibility of this new method for on-site testing are discussed. Based on laboratory and on-site tests the usefulness of this PD measuring tech…
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…