Materials Literature
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The effect of processing technique as well as the effect of oxidizing agent on the electrical properties of Mn 0 . 4 7 Zn 0 . 5 3 Fe 2 O 4 ferrite has been presented. The dc resistivity is improved by citrate precursor method as compared to normal ceramic method and it is further improved by the addition of H 2 O 2 (h…
Digital partial discharge (PD) diagnosis has become a state of the art, but computer aided procedures based on pattern recognition principles are negatively effected by on-site disturbances. The benefits and limits of expert diagnosis compared to machine intelligent systems are discussed. It is pointed out that a suff…
Carbon nanotubes (CNT) were grown on carbon fibres, both PAN‐ and pitch‐based, by hot filament chemical vapour deposition (HFCVD) using H2 and CH4 as precursors. Nickel clusters were electrodeposited on the fibre surfaces to catalyse the growth, and uniform CNT coatings were obtained on both PAN‐ and pitch‐based carbo…
Pressure-volume-temperature data, along with dielectric relaxation measurements, are reported for a series of polychlorinated biphenyls (PCB), differing in the number of chlorine atoms on their phenyl rings. Analysis of the results reveals that with increasing chlorine content, the relaxation times of the PCB become g…
A series of zinc porphyrin-quinone linked dyads [ZnP-CONH-Q, ZnP-NHCO-Q, and ZnP-n-Q (n = 3, 6, 10)] were designed and synthesized to investigate the effects of hydrogen bonds which can not only provide a structural scaffold to assemble donor and acceptor moieties but also control the photoinduced electron-transfer pr…
The technology of selective oxygen plasma etching is presented. It enables the evaluation of the state of pigment dispersion, as well as the distribution of other solid particles that are added in pigmented coatings for various functional purposes. The technology is based on the selective interaction of reactive gaseo…
Dispersions containing nanoparticles (nanofluids) are mixtures with unique properties, and their transport properties depend on the three-dimensional network or microstructure of the nanoparticles, which can be affected by various factors including shear stress, particle loading, and temperature. In this research, we…
Single-walled carbon nanotubes (SWNTs) were synthesized by chemical vapor deposition using Ar-ion laser irradiation as a source of heat. The circular area corresponding to the position of the laser spot in the growing process was characterized by Raman scattering spectroscopy and scanning electron microscopy. The resu…
This paper presents an efficient modeling technique for the derivation of the dispersion characteristics of novel uniplanar metallodielectric periodic structures. The analysis is based on the method of moments and an interpolation scheme, which significantly accelerates the computations. Triangular basis functions are…
The effect of the selective adsorption of pig serum albumin as an antigen on the electrical properties of a carbon nanotube channel field effect transistor on which anti-pig serum albumin was immobilized as an antibody by physisorption in phosphate buffer solution has been investigated. We have succeeded in real-time…
Abstract We report the synthesis and characterization of a magnesium‐aluminum layered double hydroxide (LDH) containing[5,10,15,20‐tetrakis(4‐sulfonatophenyl)porphyrinato]cobalt( II )(CoTPhsP) by two routes: (i) CoTPhsP intercalation by structure reconstruction of the calcined pristine LDH [Mg 2.8 Al(CoTPhsP) int ] an…
An Al–Li–Mg–Sc–Zr alloy was fabricated by an ingot metallurgy technique and subjected to intense plastic straining through equal channel angular extrusion at three different temperatures, 240, 325 and 400°C. The superplastic properties and microstructure evolution of the alloy were examined in tension in the temperatu…
We have synthesized polycrystalline samples of (Bi 1- x Pb x ) 1.8 Sr 2 Rh 1.6 O y ( x =0, 0.1, 0.2) by solid-state reaction. This compound is the first synthesized misfit oxide without cobalt. The obtained X-ray diffraction pattern indicates that this compound has the same structure as the thermoelectric oxide Bi 2 S…
The UKAEA Prototype Fast Reactor at Dounreay had a liquid sodium-cooled core. Following its shutdown in 1994, the liquid metal is being removed from the reactor and other vessels by means of specialized equipment and reacted with an aqueous solution of sodium hydroxide in a special vessel. The reaction products are ne…
Abstract Acceleration of the biodegradation of poly( L ‐lactide) (PLA) was studied. We found that the degradation rate of high molecular weight (1.3×10 5 ) PLA film was greatly increased by the addition of gelatin into the culture medium of the microorganisms. 100 mg of PLA film was almost completely degraded by the f…
Abstract Poly[( R )‐3‐hydroxybutyrate)], P(3HB), is the most common member of polyhydroxyalkanoates, the natural biopolyesters of intrinsic biodegradability and biocompatibility. Abiotic hydrolysis of P(3HB) was investigated in acid and base media by monitoring the formation of two monomer products, 3‐hydroxybutyric a…
This paper reports the successful design and operation of a system to remove highly radioactive cesium from the sodium coolant of the BN-350 reactor in Aktau, Kazakhstan. As an international effort between the United States and the Republic of Kazakhstan, a cesium-trapping system was jointly designed, fabricated, inst…
Abstract First-principle full valence complete active space calculations (CASSCF) are reported for the electronic states of the D 2 h and C 2 v planar isomers of B 4 , B 4 + and B 4 − . This approach is found to reproduce well the experimentally known transition energies for the two lowest excited triplet states of th…
Abstract Mixed transition‐metal oxide spinels exhibit high electrical conductivity and enhanced infrared transmissivity resulting from the presence of small polarons in the NiCo 2 O 4 lattice. Polarons are formed as a result of judicious choice of component metal cations and attendant resident cation charge states. Su…
The molten salt Flibe, a combination of lithium and beryllium fluorides studied for molten salt fission reactors, has been proposed as a breeder and coolant for fusion applications. The melting points of 2LiF-BeF2 and LiF-BeF2 are 460°C and 363°C, but LiF-BeF2 is rather viscous and has less lithium for breeding. In th…