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。
Using a high-resolution digital x-ray camera we have accurately measured the density profiles of several sediments of highly screened polystyrene colloidal spheres suspended in water. From the integral of the profile with height we directly measured the osmotic pressure as a function of volume fraction. The results ar…
Abstract Ground rubber tire (GRT) is devulcanized in a continuous process where the rubber crumb is conveyed by a screw extruder to a thin gap between a stationary die and a vibrating horn. Ultrasound amplitude, gap thickness and the duration of the treatment are varied, and their effect on the rubber properties is st…
An experimental technique for imposing lateral confinement on specimens subjected to dynamic or quasi‐static uniaxial compression has been developed. Lateral confinement is provided by a shrink‐fit metal sleeve installed on the lateral surface of a cylindrical ceramic specimen. Experiments using this technique were pe…
PURPOSE: To determine if tumor-specific monoclonal antibodies conjugated to superparamagnetic monocrystalline iron oxide nanoparticles can be used to yield specific diagnoses with the use of MR imaging. METHODS: Monoclonal antibodies conjugated to monocrystalline iron oxide nanoparticles were given to nude rats with i…
The conventional Langelier index or Larson's ratio approach to controlling copper corrosion by‐product release is demonstrably inaccurate. Contrary to expectations, higher bicarbonate concentrations exacerbate copper corrosion rates and by‐product release. In fact, as illustrated by monitoring experiences of large uti…
The potential of chitosan, a non-toxic and biodegradable polymer of beta -1,4-glucosamine, for controlling fusarium crown and root rot of greenhouse-grown tomato caused by Fusarium oxysporum f.sp. radicis-lycopersici (FORL) was investigated. The amendment of plant growth substratum with chitosan at concentrations of 1…
The solid-phase portion of the Al-Li phase diagram has been computed from first principles both at zero pressure and at a hydrostatic compression of 5.4 GPa. Computation of the pressure dependence of the Al-Li phase equilibria answers two questions: (1) how important is the effect of the atomic size difference, and (2…
Thin films of nickel oxide (NiO) with NaCl-type structure were prepared on glass substrates at 400°C by plasma-enhanced metalorganic chemical vapor deposition using nickel acetylacetonate as a source material. The relationship between O 2 flow rate, and preferred orientation and microstructure of the NiO films was inv…
The thickness of the intergranular films in Si 3 N 4 densified with lanthanide oxides has been systematically investigated using high‐resolution transmission electron microscopy. Four lanthanide oxides—La 2 O 3 , Nd 2 O 3 , Gd 2 O 3 , and Yb2O3—as well as Y 2 O 3 are chosen so that the results will reflect the overall…
All articles of this category The utilisation of the 2-cyanoethyl group as a versatile protecting group for 2-thioxo-1,3-dithiole-4,5-dithiolates and tetrathiafulvalene-thiolates is reported. Mono deprotection of bis-protected 2-thioxo-1,3-dithiole-4,5-dithiolate and of bis-protected tetrathiafulvalene-2,3-dithiolates…
We report the fabrication of several multilayer light-emitting-diode (LED) devices based on a novel conjugated polymer, poly(2,5-dihexadecanoxy phenylene vinylene pyridyl vinylene) (PPV-PPy V), involving the use of polyaniline (emeraldine base, EB) as an insulating layer between the emissive polymer layer and the elec…
The effect of host glass composition on the optical absorption spectra of ${\mathrm{Nd}}^{3+}$, ${\mathrm{Sm}}^{3+}$, and ${\mathrm{Dy}}^{3+}$ in lead borate glasses, with PbO contents varying from 30 to 70 mol %, has been analyzed using Judd-Ofelt theory and the compositional dependence has been determined for the hy…
CeO 2 powders have been prepared from cerium(III) nitrate, cerium(IV) sulfate, and cerium(IV) ammonium sulfate under hydrothermal conditions at 120° to 200°C for 5 to 40 h. The effects of the starting cerium compounds, hydrothermal treatment temperature, and the concentration of the solutions on the crystal growth of…
We have measured the temperature dependence of the electron paramagnetic resonance (EPR) of ${\mathrm{La}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ca}}_{\mathit{x}}$${\mathrm{MnO}}_{3+\mathrm{\ensuremath{\delta}}}$ for 0.0\ensuremath{\le}x\ensuremath{\le}1 at 9.2 and 35 GHz from 270 to 800 K. We vary \ensuremat…
We review the current knowledge of the geometric and electronic structure of oxide surfaces. In particular, material published during the last five years and going beyond the latest book by Henrich and Cox, Surface Science of Oxide Surfaces, is documented. In addition to the discussion of effects on and in bulk oxide…
Since the porous structure is completely retained upon surfactant removal , Nb‐TMS1, a hexagonally packed mesoporous transition metal oxide, is an interesting molecular sieve. The synthesis of this material was accomplished by a novel route in which the inorganic precursor 1 and the surfactant 2 were attached by a cov…
Potential degradation of concrete structures made of calcium aluminate cement (CAC) is well known and is caused by transformation (conversion) of the thermodynamically metastable into stable calcium aluminate hydrate phases. This recrystallization is influenced by temperature and humidity; the structural degradation o…