Materials Literature
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Electrical conductivity of porous silicon fabricated form heavily doped p-type silicon is very sensitive to NO$_2$, even at concentrations below 100 ppb. However, sensitivity strongly depends on the porous microstructure. The structural difference between sensitive and insensitive samples is independently confirmed by…
Synthesis of various 9, 10-diarylanthracene derivatives via bis-Suzuki-Miyaura cross-coupling reaction as a key step is described. Availability of the 9,10-dithienylanthracenes derivatives where the thiophene unit is present in the molecule (e. g. 11, 12, 14) may provide an easy access to novel polymer and/or dendrime…
The change in the secondary and tertiary structure of bovine serum albumin (BSA) induced by the interaction with spherical polyelectrolyte brushes (SPB) has been investigated using fluorescence and circular dichroism (CD) spectroscopy. The SPB consist of poly(acrylic acid) chains grafted to a poly(styrene) core. The c…
Abstract A number of polyphase or single-phase ceramic waste forms have been considered as options for the disposal of nuclear waste in geological repositories. Of critical concern in the scientific evaluation of these materials is their performance in natural systems over long periods of time (e.g., 10 3 to 10 6 year…
A study was carried out on the aging behaviour of a solution treated 6082 aluminium alloy deformed by equal channel angular pressing up to six passes. Aging of the so obtained ultrafine alloy was studied by DSC and TEM analyses as well as by isothermal treatments at 130, 160 and 180°C. The results showed that the form…
Silicon carbide and SiCf/SiC ceramic matrix composites are attractive materials for energy application because of their chemical stability and mechanical properties at high temperature. For these materials advanced joining techniques are under development and, among them, brazing is one of the most promising. In this…
The rate of dissolution, of the native film on electrochemically polished, single-crystal [(100), (110), and (111) orientations] and polycrystalline Al electrodes is reported. Measurements were made in solutions containing between 0 and 75 mM NaCl. is determined by analysis of voltammetric curves recorded during film…
The metal-to-metal charge transfer (MMCT) transitions of a series of Class II mixed valence dinuclear complexes bearing cyano bridging ligands may be varied systematically by variations to either the hexacyanometallate(II) donor or Co(III) acceptor moieties. Specifically, the new dinuclear species trans-[L(14S)CoNCFe(…
[((t)Bu(3)SiS)MX[(12) are wheels for first row transition metals (M = Co, X = Cl; M = Ni, X = Br), but for nickel, simpler [e.g. [((t)Bu(3)SiS)Ni](2)(mu-SSi(t)Bu(3))(2)[ and more complicated [e.g. [(mu-SSi(t)Bu(3))Ni](5)(mu(5)-S)] structures are by-products.
This article covers the basics of a ferroresonant condition: the network circuits involved; two simple analysis processes - linear circuit analysis concept and dual X/sub M/ analysis concept. A review of how ferroresonance is prevented and a variety of other issues were discussed.
A study has been conducted to examine the effect of different preparation and dyeing processes on the physical strength of the Ingeo fibre component of an Ingeo fibre/cotton blend. An alkaline scouring process (for the cotton), followed by a two‐bath, two‐stage dyeing process in which the Ingeo fibre underwent a simul…
BACKGROUND/AIMS: Cytokines play important roles in the pathophysiology of systemic inflammatory response syndrome (SIRS) and sepsis. Therefore, some effective measures to remove cytokines from the bloodstream could be effective in the treatment of SIRS and sepsis. The aim of this study was to evaluate the cytokine ads…
The development of a dielectric grating antenna at K/sub a/ band is presented. The antenna performance is analyzed using perturbation analysis and a numerically based commercial software. The effect of the grating profile and various dimensions on the performance is presented. Based on the analytical results a rectang…
The ruthenium(II) complex (R4Pc)Ru(TED)2 {R4Pc2− is [4,5,4’,5’,4”,5”,4”’,5”’-tetrakis-(1,4,7,10,13-pentaoxatridecamethylene)- phthalocyaninate anion]; TED is triethylenediamine} with a coordinated tetra-15-crown-5- phthalocyaninate dianion and axiallyarranged triethylenediamine molecules has been synthesised and chara…
AC impedance spectra of symmetrical cells consisting of Pt / Ce 0.9 Gd 0.1 O 1.95 − δ / Pt have been measured in air and under different reducing atmospheres at temperatures in the range 250-650°C. The electrode response under reducing conditions shows a contribution extending to very low frequencies and thus a large…
Poly(ethylene terephthalate)(PET)/poly(butylene terephthalate)(PBT)blends were prepared in ways: by injection molding only and by mixing on extrusion machine and than injection molding. The mechanical properties, thermal behavior and crystallization of PET/PBT blends were investigated. It has been observed that the wa…
Electrochemical techniques were employed to study the nature of individual interactions between the chemicals constituting a widely used commercial chromate conversion-coating treatment and the main constituents of AA2024-T3 alloy, namely, Al (99.999%), Al 2 Cu , Al Al 2 Cu galvanic couple, and AA2024-T3 alloy. The…
We proposed pyrolysis as a promising optional technology for recycling waste products,especially sewage sludge and animal waste (manure). In this study, nutrient (nitrogen,phosphorous and potassium) leaching characteristics of carbon products mainly from sewagesludge and cattle waste were analyzed. Results are summari…
Poly(N-isopropylacrylamide)-grafted gelatin (PNIPAM-gelatin) can be used as a thermoresponsive cell-adhesive matrix and mold-releasable material for shape-engineered tissues. An example of such a tissue with predetermined shape is realized by fabrication of a tubular endothelial cell construct. A solution containing a…
Lightweight plastic grids for lead/acid battery plates have been prepared from acrylonitrile butadiene styrene copolymer. The grids have been coated with a conductive and corrosion-resistant tin oxide layer by a novel rapid thermally activated chemical reaction process. X-ray powder diffraction and X-ray photoelectron…