Materials Literature
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NO x storage–release and soot oxidation have been studied using strontium promoted zirconia with different surface areas. It was found that the amount of the adsorbed NO x increases with the increase of the support surface and Sr concentration up to 20 wt% Sr. Introduction of platinum has no effect on the amount of NO…
A nearly complete global network can reliably spot secret nuclear explosions, researchers say. Will holdout nations now ratify the test ban?
More complete molecular dynamics simulations of NO doped Ar solid upon photoexcitation of the impurity should include effects of angular variations of Ar-NO intermolecular potential. This is the main reason for presenting in this work an ab initio study of the Ar-NO(A (2)Sigma(+)) intermolecular potential. Ab initio c…
Das diskotische flüssigkristalline Radikal 1, das im festen Zustand und in Lösung sehr stabil ist, bildet oberhalb der Raumtemperatur eine enantiotrope geordnete hexagonale columnare Mesophase mit magnetischen Wechselwirkungen zwischen den Molekülspins. Radikal 1 ist elektrochemisch amphoter, und seine Absorptionen un…
Abstract For the first time, a fluidized bed reactor was used for encapsulating nanoparticles by the polymerization compounding approach using Ziegler–Natta catalysts. The polymerization reaction was carried out using a solvent‐free process in a gas‐phase reactor. This direct gas–solid reaction greatly simplified coll…
The electronic structure and thermodynamic properties of CeRh(2)Sn(4) and LaRh(2)Sn(4) are reported. The crystal structure of CeRh(2)Sn(4) has been determined from single-crystal diffraction experiments. The Ce core-level x-ray photoemission spectra and Ce L(III) x-ray absorption data unanimously indicate a stable tri…
Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. We succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by…
Abstract The optimum parameters were determined for synthesizing ZrN‐Si 3 N 4 composite powder from zircon by carbothermal reduction‐nitridation (CTRN) process. The samples were prepared by mixing the carbon black of an average particle size less than 30 μm and the zircon of 40 μm with C/ZrSiO 4 mass ratios of 0.2, 0.…
Abstract A center‐fed circular ε‐negative zeroth‐order resonator antenna with a symmetrical omnidirectional radiation pattern is investigated numerically and experimentally in this article. The radiation pattern of the proposed antenna is symmetrical. Furthermore, symmetry of radiation pattern, bandwidth and gain coul…
The present study deals with two-dimensional (2D) surface alloy formation on stepped crystal surfaces. In specific temperature range, the high diffusion barrier for direct atomic exchange between adsorbed layer and substrate, completely block 2D intermixing on smooth, step-free surface domains. Hence, in a given energ…
Tm(3+):LaF(3) nanocrystals were synthesized with hydrothermal technique. Local-field effect on the radiative relaxation rate was studied in the system of Tm(3+):LaF(3) nanocrystals immersed in several liquid media. The fluorescence lifetime was measured. It was found that the fluorescence decay presented the character…
To suppress interfilamentary coupling in (Bi,Pb) 2 Sr 2 Ca 2 Cu 3 O x (Bi2223) multifilamentary tapes under an AC external magnetic field it is necessary to increase the transverse resistivity by using a high-resistivity Ag alloy sheath as a matrix. Alternatively, oxide layers can be introduced as resistive barriers a…
We have studied the correlation between liquid fragility and the inward diffusion (from surface toward interior) of alkaline earth ions in the SiO(2)-Na(2)O-Fe(2)O(3)-RO (R = Mg, Ca, Sr, Ba) glass series. The inward diffusion is caused by reduction of Fe(3+) to Fe(2+) under a flow of H(2)/N(2) (1/99 v/v) gas at temper…
The newly developed Ti-15Mo-1Bi alloy not only possesses all the desirable mechanical properties inherent to beta-Ti Mo alloys, but may even enjoy better clinical applicability with the addition of bismuth element, which has long been administered as antibacterial and antitumor medicines. A significantly higher viabil…
Global models are useful in the analysis of fusion reactors due to the facility in computing and presenting the results in terms of comprehensive parameters. A general figure of merit, which encompasses all the relevant tokamak parameters, is introduced in this paper by a convenient normalization of the global power b…
Abstract Appropriate surfactants and co‐surfactants were chosen to prepare a microemulsion system with lubricant base oil as the oil phase. The phase behaviour of the microemulsion at different temperatures and at different oil/water mass ratios was assessed on the basis of conductivity measurements. Microemulsions an…
PURPOSE: To investigate the effect of a negative pressure fixation device on misregistration artifacts in contrast-enhanced (CE) MR subtraction images. MATERIALS AND METHODS: Nine patients, two of which had been previously diagnosed with breast cancer, were examined with T2-weighted (T2-w) turbo spin-echo (TSE) and th…
The $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ perturbed angular correlation technique (PAC) using $^{99}\text{R}\text{u}$ was applied to investigate the orbital ordering of $\text{Ru}\text{ }4d$ electrons in ${\text{Ca}}_{2}{\text{RuO}}_{4}$. It was confirmed that the ferro-orbital ordering charact…
Abstract In this article, a circuit model is proposed for the complementary split‐ring resonators (CSRRs) loaded transmission line, and comparisons between the results derived from the equivalent circuit model and the experimental results are given and a good agreement between them over a wide frequency band supports…
The effect of long-range correlated quenched structural defects on the critical ultrasound attenuation and sound velocity dispersion is studied for three-dimensional Ising-like systems. A field-theoretical description of the dynamic critical effects of ultrasound propagation in solids is performed with allowance for b…