Materials Literature
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A systematic study of the electronic structure and chemical bonding of the Li-intercalated titanium dichalcogenides, LiTiX 2 (X=S, Se, and Te), is performed by a first-principles molecular-orbital method using a model cluster composed of 75 atoms. The discrete-variational (DV)-Xα method was employed and Mulliken's pop…
Diblock copolymers of styrene and p-chlorostyrene (PS-b-PpClS) were prepared via chain extension polymerization of N-oxyl-capped polystyrene macroinitiators with p-chlorostyrene. The kinetics plots of the copolymerizations are approximately first order with respect to monomer concentrations. The addition of p-chlorost…
Other| December 01, 1998 Octahedral site Fe (super 2+) quadrupole splitting distributions from the Moessbauer spectra of arrojadite Isamu Shinno; Isamu Shinno Kyushu University, Graduate School of Social and Cultural Study, Fukuoka, Japan Search for other works by this author on: GSW Google Scholar Li Zhe Li Zhe Chine…
The process-parameter-dependent optical and structural properties of MgO-Al(2)O(3)-ZrO(2) ternary mixed-composite material were investigated. Optical properties were derived from spectrophotometric measurements. The surface morphology, grain size distributions, crystallographic phases, and process-dependent material c…
Low-stress mechanical properties of various suiting and shirting fabrics have been studied on Kawabata fabric evaluation system. Sewability of these fabrics has also been studied. The correlations between low-stress mechanical properties and various sewability parameters have been determined for different types of sui…
The preparation of microcapsules containing perphenazine by solvent evaporation using ethyl cellulose is described. The microparticles are formed after solvent evaporation and polymer precipitation. The drug was dissolved in a polymer solution and emulsified into an aqueous phase to form microcapsules. To study the ef…
The time dependent temperature distribution induced by electric current heating in a double edge cracked, unpassivated thin aluminum or gold film interconnect lines is monitored using a high resolution infrared imaging system. A pure aluminum or gold film, with a thickness of 0.2 μm, is deposited by high vacuum evapor…
The increasing use of composite structures and composite electronics boxes in space can result in a several-fold increase in electronics radiation total dose, as compared to using aluminum structures and aluminum electronics boxes. There are also desires to use multi-function structures (MFS), where electronics are in…
All articles of this category δ -hydroxy- β -oxo esters - Blaise reaction - β -hydroxynitriles - sonication - zinc
The absorption of NOx(IV) into nitric acid solutions containing a low concentration of hydrogen peroxide was studied in a small packed column. A simple mathematical model developed for this absorption was used for the determination of kinetic parameters relative to NO2 and N2O4in such solutions. Results obtained at 10…
Abstract: Magnesioferrite, a rare metasomatic mineral, was discovered for the first time in China from the Qinlou Au (Fe, Cu) magnesian skarn deposit, Sanpu, Huaibei, Auhui Province, and the Mulonggou Fe (Mo, Cu) magnesian skarn deposit, Luonan County, Shaanxi Province. In this paper, the geological setting, mineral a…
Gallium–sodium–sulfide glasses have been shown to be the most promising host for the 1.3 μm fiber optic amplifier so far. However, the current study has revealed that the formation of stable glasses in this system relies on the existence of a certain amount of oxide in the composition. A glass‐forming region was ident…
A greenhouse study was conducted to assess nutrient availability in wood ash when applied to surface soil samples of three tropical acid soils (Kandiudult) from Cameroon. Amendments were applied at rates to attain target pH values of 5.5, 6.0 and 6.5. Lime treatments were included as a control. Rye grass (Lolium peren…
We calculate the energy of charge-carrier-induced canted ordering in conducting layered antiferromagnetic systems with double exchange. The quantum approach to the d -spins is used. In the jellium model the energy of the canted state is lower than the energies of both collinear ferro-and antiferromagnetic states over…
A new electrolyte is presented for the electrochemical formation of porous silicon. The electrolyte, an ammonium fluoride etch mixture (AFEM), is used instead of hydrofluoric acid (HF) which is normally used for porous silicon (PS) formation. The main advantage of AFEM is that it attacks aluminium at a significantly l…
: X-ray counting statistics plays a key role in establishing confidence limits in composition determination by X-ray microanalysis. The process starts with measurements of intensity on one or more samples and standards as well as related background determinations. Since each individual measurement is subject to variab…
β-phase Cu-48at% Zn single-crystal slices with (100)β and (110)p surface orientations have been dezincified in vacuum at 450 and 600°C for various times, and the resulting surfaces have been studied by optical microscopy, and also by scanning and transmission electron microscopy. On dezincification, the β phase become…
Other| December 01, 1998 Characterization of neoformed illite from hydrothermal experiments at 250 degrees C and P (sub v,soln) ; an HRTEM/ATEM study Douglas M. Yates; Douglas M. Yates Washington State University, Department of Geology, Pullman, WA, United States Search for other works by this author on: GSW Google Sc…
Abstract Aiming at a synergism of improvements of impact strength of polypropylene by the addition of β-crystal nucleator and of its rigidity by the filling of particulate, the addition of the nucleator to particulate-filled polypropylenes has been studied. 0 to 3000 ppm of γ-quinacridone (GQ) which is a β-crystal nuc…
Polyaniline (PAN)—an electrically conductive conjugated polymer—was always of major interest due to its unique properties. However, the insolubility of PAN in common organic solvents hampered commercial exploitation. The synthesis of new copolymers of aniline and chalcophenes is reported. The Figure shows a scanning e…