Materials Literature
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Interaction of the segments of interconnect trees during electromigration experiments has been studied using several simple tree structures. It is demonstrated that the reliability of a segment can not be predicted without knowledge of the conditions for stress migration and electromigration in connecting segments. Si…
By measuring the currents associated with the streamer discharge along silicone rubber surfaces, parameters of streamer propagation such as the minimum field of streamer crossing, the field of stable streamer propagation, the mean velocity and the streamer charge distribution have been analyzed and compared to the str…
The two novel thioantimonate(III) compounds [Co(C6H18N4)]2Sb4S81 and [Co(C6H18N4)]2Sb2S52 were synthesised under solvothermal conditions by reacting elemental Co, Sb and S in a 95% solution of tris(2-aminoethyl)amine (tren). Compound 1 crystallises in the monoclinic space group P21/c, a = 17.936(4) Å, b = 13.442(3) Å,…
A set of nine monomers derived from diaryl-cyanovinylene, -carboxyvinylene and -cyanobutadiene were synthesized as were the corresponding polymers resulting from the chemical polymerization of the monomers in the presence of an almost quantitative amount of FeCl3 in chloroform. The aim of this work was to investigate…
Oxide layers thermally formed on copper have been studied using double sweep cyclic voltammetry in strongly alkaline electrolytes. It was found that the addition of 1 M LiOH in an electrolyte (6 M KOH) allowed perfect resolution of cathodic waves due to the reduction of and CuO. Assignment of the two reduction waves h…
Three-dimensionally ordered macroporous active carbon has been fabricated by carbonizing an aqueous solution of sucrose in the presence of sulfuric acid; nitrogen adsorption measurements show the presence of a microporous wall structure framework leading to a high BET surface area of 408 m2 g−1.
The deep drawability of commercial purity aluminium sheets is improved by introducing a (in fcc materials rather unusual) {111} fibre texture in the sheet surface layers. An additional step of warm rolling after the conventional hot and cold rolling leads to the formation of a pronounced shear texture in the sheet sur…
Adherent electroactive films of poly( o -phenylenediamine) (PPD) were obtained by electropolymerization of o -phenylenediamine ( o -PD) on 304 stainless steel under potentiostatic conditions. The in situ Fourier transform infrared reflectance spectroscopy study suggests a phenazine ring ladder-structure polymer. Open…
Electron paramagnetic resonance (EPR) has been used to characterize a hole trap and several electron traps in single crystals of potassium dihydrogen phosphate (KH2PO4 or KDP). The paramagnetic charge states of these centers are produced by ionizing radiation (e.g., x rays or a 266 nm beam from a pulsed Nd:YAG laser)…
The book has 23 chapters and the following topics are dealt with: electric power transmission system; electric power distribution system; insulation coordination; AC transmission; application of gaseous insulants; HVDC and power electronic system; overhead lines; high voltage cables; gas filled interrupters; switchgea…
Zr0.10(Ce1 − xPrx)0.90O2 mixed oxides (x between 0 and 0.75) were prepared by coprecipitation (nitrates) or by the sol–gel route. Zirconium n-propoxide and cerium and/or praseodymium nitrates were used as precursors. “Sol–gel” oxides calcined at 900 °C were shown to be cubic with a fluorite-type structure. Coprecipate…
Hyperbranched polyamidoamine–grafted silica was prepared according to dendrimer synthesis methodology. The modified silica was dispersed uniformly in epoxy resin, and the curing of epoxy resin proceeded successfully by heating in the presence of the modified silica; the gel fraction of the epoxy resin cured by the hyp…
The performances of high-concentration Er/sup 3+/-doped phosphate fiber amplifiers are reported. The amplifiers are characterized in terms of gain, noise figure, and signal saturation power in a co-propagating pump configuration. A net gain of 21 dB and a gain per unit length 3 dB/cm are achieved in a 71-mm Er/sup 3+/…
composite electrodes with various molybdenum oxide content were prepared using activated carbon with high surface area by impregnation of activated carbon in methanolic solutions of The supercapacitive behavior of the composite material was characterized by cyclic voltammetry. An increase in capacitance compared to pr…
Carbodiimide cross-linking of bioprosthetic materials has been shown to provide tissue stabilization equivalent to that of glutaraldehyde cross-linking, but without the risk of the release of unreacted or depolymerized cytotoxic reagent after implantation. In this study, the effects of 1-ethyl-3-(3-dimethylaminopropyl…
Well-aligned nanowire arrays have been synthesized by anodic oxidative hydrolysis of within a hexagonal close-packed nanochannel alumina on an Au substrate. X-ray diffraction spectrum, Raman scattering spectrum, scanning electron microscopy, and transmission electron microscopy analysis show that the single-crystallin…
The limit of ultraviolet transparency of glass, in the absence of metal ion impurities such as Fe 3+ or Pb 2+ , is discussed in terms of how the glass composition drastically modifies the properties of the constituent oxygen atoms. Two distinct approaches are made, one based on band theory and the other on electronic…
A two-dimensional breakdown model based upon the continuity equations for electrons and ions and the Poisson equation is employed to examine the influence of surface charges upon the partial discharge behavior of a short metallic-dielectric plane-parallel electrode gap of 0.05 cm in an air-like mixture at atmospheric…
The approach developed previously to assign the major π → π* and π* → π* bands in the optical spectra of metallophthalocyanine radical species [ MPc (−n)] (n−2)− (n = 1–6), which was based on spectral band deconvolution analyses of the UV-vis absorption and magnetic circular dichroism (MCD) spectra and ZINDO calculati…
The cooperation between cellobiohydrolase (CBHI) and endoglucanase (EG) is necessary for biodegradation of native cellulose, but its mechanism is still poorly understood. The present paper report at the first time that an isolated component, the cellulose binding domain with its linker sequence of cellobiohydrolase I…