Materials Literature
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Lithium borohydride (LiBH 4 ) was compressed up to 10 GPa using a diamond-anvil-cell to investigate its high-pressure structure. In-situ x-ray diffraction profiles indicated a pressure-induced transformation at 1.1 GPa, which was consistent with the previous experimental observation such as Raman scattering spectrosco…
Abstract Summary: The article focuses on the photovoltaic devices made from copolymers of 2‐(carbazol‐9‐yl)ethyl methacrylate (CEM) with benzofuran‐2‐carboxylic acid 2‐(methacryloyloxy)ethyl 6‐(diethylamino)benzo[b]furan‐2‐carboxylate (MB) and poly(3‐decylthiophene) (PDT) or poly(3‐octylthiophene) (P3OT). Photovoltaic…
Solvothermal crystallization of the hydroxide gels obtained by hydrolysis of alkoxides (Zr, Ta, Nb, ln, Sn, Ti and Al) was examined. Nanocrystals having high surface areas (S BET > 170 m 2 g -1 ) were obtained except for the product derived from indium isopropoxide. The effect of water in organic solvent upon the crys…
The formation mechanisms of Li x Na1 −x Ta y Nb1 − y O3 perovskite solid solutions in the Li2CO3-Na2CO3-Nb2O5-Ta2O5 system have been studied by x-ray diffraction, differential thermal analysis, thermogravimetry, IR spectroscopy, and mass spectrometry at temperatures from 300 to 1100°C. The results indicate that the sy…
The transition to a charge and orbital ordered (CO/OO) state in epitaxial manganite films is strongly influenced by lattice strain. Bi1− x Ca x MnO3 is a particularly interesting material due to its high transition temperature and its relation to other Bi-based materials. Here, we review its properties and show the ef…
Human neutrophil elastase (HNE) as a major contributor to inflammatory process is implicated in a number of diseases such as acute lung injury, cystic fibrosis, ischemic reperfusion injury, rheumatoid arthritis, atherosclerosis, psoriasis, and malignant tumors [1–4]. Moreover alpha-1 antitrypsin (α 1 - protease inhibi…
Degradation of metal-induced laterally crystallized n-type poly-Si TFTs is systematically investigated under synchronized Vgand Vdstresses. In low frequencies, degradation independent of frequency is the same as that in DC self-heating stress, while in high frequencies, frequency dependent degradation is attributed to…
The need of high power transmission systems is increasing in the near future. Power Supply of large metropolitan areas like New York, London, Shanghai, Tokyo, Sao Paulo, just to name some, will ask for increasing power concentrated in a dense populated area where no overhead line will be accepted. High power undergrou…
The thin twins theory is consistently applied to the dislocation description of twins in the high-temperature superconductor YBa2Cu3O7−δ (YBCO). Quantitative analysis of the twin shape shows agreement with a theoretical analysis and gives a new method of evaluating the twin boundary energy γtw. The friction stress Sfr…
In this review the models applied for the description of non-Newtonian liquids were presented. Highly filled polymer melts showing distinct yield stress are such liquids. The effects of forces of geometrical and physical interactions among the filler particles on the properties were discussed. These interactions force…
The formation of Cu2SnZnSe4thin films in the selenization of different sequential metallic and alloy films is investigated. It is shown that the main process of low temperature selenization (up to 300degC) is the formation of different binary copper selenides on the layer surface. High temperature selenization (over 4…
Le procédé de transformation des matières plastiques le plus répandu reste la fabrication par extrusion. Le rôle d’une filière d'extrusion est de fournir à la sortie de l'outillage un produit de dimension donnée, parfaitement uniforme du point de vue des débits et des températures, et en absence totale d’hétérogénéité…
Multi-walled carbon nanotubes were synthesized by dc-arc discharge in helium atmosphere and the effect of calcination at different temperatures ranging from 300-600 degrees C was studied in detail. The degree of degradation to the structural integrity of the multi-walled carbon nanotubes during the thermal process was…
The extension of the UP2 plant at La Hague includes a new plutonium purification cycle using multistage centrifugal extractors to replace the previous cycle that used mixer/settler banks. This type of extractor is suitable for the treatment of fuel containing a high proportion of plutonium-238, as its short residence…
High Level Waste (HLW) at the Savannah River Site (SRS) is currently stored in aging underground storage tanks. This waste is a complex mixture of insoluble solids, referred to as sludge, and soluble salts. Continued long-term storage of these radioactive wastes poses an environmental risk. The sludge is currently bei…
We have designed a conformal end-fire antenna, where the dipole antenna is placed close to the ground plane. A 5×5 SRR array has been designed to provide the high impedance shielding from the ground plane. The SRR array utilizes the principle of resonance to provide a high impedance ground plane. It has been observed…
At the Idaho National Engineering Laboratory, an integrated laboratory scale (ILS), 15 kW high-temperature electrolysis (HTE) facility has been developed under the U.S. Department of Energy Nuclear Hydrogen Initiative. Initial operation of this facility resulted in over 400 hours of operation with an average hydrogen…
CdTe quantum dots were grown in a borosilicate glass matrix by a two-step heat treatment process. Their average radius, size dispersion and number per unit volume (volume fraction) have been determined by using a simple absorption model based on the density matrix approach. The volume fraction of CdTe quantum dots in…
At the growth temperature at and above 700degC as well as C2H4flow rate of 20 seem,, carbon nanotubes (CNTs) were synthesized on the SiO2substrates dip-coated with Co acetate only. The fine dispersion of Co particles was caused by a strong interaction between metal acetate and SiO2support. Due to the high process (atm…
Effect of a variable and continuous load on top-oil (TOT) and hot-spot (HST) temperature rise and in turn, on aging of mineral-oil-immersed transformers has been well studied. Detailed loading procedures covered in relevant IEEE Standard serve utilities manage critical assets in the form of power and distribution tran…