Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Pregnane glycosides constitute a class of compounds widely distributed in the plant kingdom. Many of them have shown either anticarcinogenic or cancer inhibitory properties, besides other useful biological activities. New chromatographic techniques and advances in spectroscopic and spectrometric methods have accelerat…
X-ray studies of TmFeO3 single crystals in the spontaneous spin-reorientation region demonstrate the absence of lattice distortions and no lowering of the symmetry of the crystal from rhombic to monoclinic and thus confirm the purely magnetic nature of the Γ2–Γ24–Γ4 spin reorientation in orthoferrites.
The US Air Force is interested in developing fiber-reinforced ceramic composites that perform at ultra-high temperatures (greater or more than 1500 degrees C) under oxidative conditions, especially for hypersonic vehicles. Two potential approaches are: (a) Utilizing existing carbon-fiber-reinforced carbon-matrix compo…
BACKGROUND: Liver targeting drug delivery systems can improve the curative effects and relieve the cytotoxicity of the chemotherapy drugs in the treatment of liver diseases. Nanoparticles carrying therapeutic drugs are currently under hot investigation with great clinical significance. This study was aimed to investig…
The electromotive force (e.m.f.) of solid oxide fuel cells using biomass produced gas (BPG) as the fuels is calculated at 700-1,200 K using an in-house computer program, based on thermodynamic equilibrium analysis. Tour program also predicts the concentration of oxygen in the fuel chamber as well as the concentration…
Theoretical studies have suggested that Bi-based and III-V nanowire structures may have high thermoelectric figure of merit (ZT). It was found in a previous measurement that the thermoelectric properties of individual electro-deposited bismuth telluride nanowires are largely influenced by the crystal structure includi…
Loss of filtration efficiency in a fabric filter baghouse is typically caused by bag failure, in one form or another. The degree of such failure can be as minor as a pinhole leak or as major as a fully involved baghouse fire. In some cases, local air pollution regulations or federal hazardous waste laws may require es…
A kind of ruthenium oxide with smaller particles and higher porosity was prepared by a sol-gel process with RuCl3xH2O and NaHCO3 solution. Several details concerning this new material, including crystal structure, particle size as functions of the temperature, and electrochemical properties were also reported. The opt…
Keggin-type molybdovanadophosphoric acids (HPA), H4PMo11VO40 (1), H5PMo10V2O40 (2) and H6PMo9V3O40 (3) were anchored onto γ-aminopropyltriethoxysilane (APTS) aminosilylated silica mesoporous SBA-15 through acid-base neutralization and the resulting HPA/APTS/SBA-15 were characterized by BET, TEM, XRD, ICP, FTIR and 31P…
The paper presents a methodology for successful localization of degraded insulation in medium voltage cables. Extensive work has been performed on development of cable models and characterization of new and degraded cable material to support the diagnostic technique. A non-destructive technique has been developed usin…
Motivated generally by potential applications in the liquid crystal display industry [8,35], and specifically by recent experimental, theoretical and numerical work [6,7,13,14,21,25,30,31], we consider a thin film of nematic liquid crystal (NLC), sandwiched between two parallel plates. Under certain simplifying assump…
A unidirectional ensemble of hemicyanine molecules was prepared by inserting the molecules into the vertical channels of a uniformly oriented zeolite (silicalite-1) film grown on a glass substrate. Fluorescence from this sample excited with light polarized along the vertical channel was 50 times larger than that excit…
We create mechanically stable (MS) packings of bidisperse disks using an algorithm in which we successively grow or shrink soft repulsive disks followed by energy minimization until the overlaps are vanishingly small. We focus on small systems because this enables us to enumerate nearly all distinct MS packings. We me…
The objectives of this paper are twofold to summarize the new findings and confirmed results from the Phebus FPT-1 experimental data and to report useful information to MELCOR users regarding the better use of MELCOR. For the core damage behavior, the early stage of a melt progression was predicted well; however, the…
The paper presents a methodology for successful localization of degraded insulation in medium voltage cables. Extensive work has been performed on development of cable models and characterization of new and degraded cable material to support the diagnostic technique. A non-destructive technique has been developed usin…
We focused on half-Heusler compounds MPtSn, where M is Hf, Zr and Ti, to seek for half-Heusler compounds which intrinsically show excellent p-type thermoelectric properties in a wide temperature range up to around 1000 K. Nearly single-phase MPtSn alloys were fabricated by directional solidification using optical floa…
X-band electron paramagnetic resonance (EPR) spectra of gamma-irradiated crystals of carbonatebearing fluorapatite from the Levant mine, Cornwall, England, revealed the presence of two previously characterized centers (i.e., an O − defect and an O − ⃞ F defect, where ⃞ F represents a vacancy at the F site), a CO 2 − r…
A pulsed wire discharge method was used in the synthesis of zirconia–alumina nanocomposite powders by mixing zirconium plasma with aluminum plasma and cooling them together in an oxygen atmosphere. The products formed were characterized by powder X-ray diffractometry, transmission electron microscopy, and Brunauer–Emm…
Utilities that fail to conduct emergency training may find themselves relying on untested paper emergency plans when they face an actual crisis.
Cr-doped BiFeO3 (BFO) thin films were deposited on Pt(200)/TiO2/SiO2/Si(100) substrates by a chemical solution deposition method. The dielectric constant and dissipation factor of the BFO thin films decrease from 165 and 0.054 (undoped) to 100 and 0.02 (3 mol% Cr-doped) at a frequency of 10 kHz as the Cr content incre…