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。
In the present paper, a computational model is used to simulate the aero-dynamic, thermal, and chemical conditions inside an arch-fired coal boiler. The model is based on the Eulerian-Eulerian concept, in which Eulerian conservation equations are solved both for the gas and the particulate phases. A NOx formation and…
Structure development in silica filled polyisoprene composites was investigated by wide line pulsed NMR and high-resolution solid-state NMR combined with transmission electron microscopy. The rubber phase in the composites was composed of so-called bound rubber and free rubber. Furthermore, the bound rubber was compos…
Abstract Vegetable oils are often thermally polymerized to provide a vehicle for printing inks and paints. The formations of isomerization, and the intra‐ and intermolecular bonds involved in the thermal process are crucial in designing a product with the appropriate characteristics. It was found, with a differential…
A product of the chemical degradation of poly(ethylene terephthalate) (PET) with triethanolamine was used as a polyol component for rigid polyurethane foam synthesis. Miscibility of the product with water, some polar organic solvents and commercial polyols was investigated. Viscosities of the product as a function of…
Abstract Polyhydroxyalkanoates (PHAs) are biodegradable substitutes to fossil fuel plastics that can be produced from renewable raw materials such as saccharides, alcohols and low‐molecular‐weight fatty acids. They are completely degradable to carbon dioxide and water through natural microbiological mineralization. Co…
Amino acid alterations were designed at the C terminus of the hinge segment (amino acids approximately 51-59) that links two functional domains within lactose repressor protein (LacI). Gly was introduced between Gly(58) and Lys(59) to generate Gly(58+1); Gln(60) was changed to Gly or Pro, and up to three additional gl…
Bulbous rush ( Juncus bulbosus ) initiates plant colonization in extremely acid lakes resulting from coal mining operations. Various analytical techniques (methylene blue/agar method, Ti 3+ ‐citrate solution) X‐ray diffraction (XRD), scanning electron microscopy (SEM), and Energy‐dispersive X‐ray (EDX) were used to as…
The homologous compounds In 1− x Ga 1+ x O 3 (ZnO) k (where k = 1, 2, or 3) were prepared at a temperature of 1400°C. The solubility limits (as determined via X‐ray diffractometry) were 0.47 < [In]/([In] + [Ga]) < 0.67 for the k = 1 member, 0.35 < [In]/([In]+[Ga]) < 0.77 for the k = 2 member, and 0.29 <…
The mechanism of mullite crystallization in Al 2 O 3 ‐SiO 2 glass fibers with compositions of 49 and 69 mass% Al 2 O 3 was investigated using isothermal methods. The activation energies ( E a ) of the nucleation and nucleation‐growth of mullite were obtained from the temperature dependence of the incubation times and…
Municipal solid waste (MSW) recycling targets have been set nationally and in many states. Unfortunately, the definitions of recycling, rates of recycling, and the appropriate components of MSW vary. MSW recycling has been found to be costly for most municipalities compared to landfill disposal. MSW recycling policy s…
We demonstrate the formation of an ${\mathrm{SnO}}_{2}$ thin film in an orthorhombic phase which has previously been found in high-pressure experiments. Our starting point was the pulsed-laser deposition of an amorphous film of SnO on Si [001] substrates. During a series of subsequent heat treatments in air, the film…
The fatigue resistance and tensile properties of a precipitate strengthened Cu–Ni–Si alloy have been investigated. Underaged material exhibited greater work hardening rates than either the peak aged or overaged material. It is proposed that this occurs because the δ-Ni2 Si precipitates can be cut by dislocations, but…
Polyglycolide (polyglycolic acid, PGA) was prepared by thermally induced solid-state polycondensation from sodium chloroacetate. This reaction leads to a composite of PGA with NaCl, out of which the latter can be extracted by washing with water. A highly porous polymer remains. The course of the reaction was followed…
Previous investigators have shown that, at high pressure, Re is a good capsule material and that Fe loss to Re under these conditions is minimal (e.g., Herzberg and Zhang 1997). We present here the first systematic low-pressure study of Re loop stability and of Fe loss from silicate melts to Re loops as a function off…
A quantitative study on α–β transition of Merino wool upon stretching has been carried out by wide angle X-ray diffraction using Merino wool fibre bundles. Technical factors affecting this determination, such as subtraction of air scattering and the measurement of crystallinity are considered. The degree of crystallin…
Peroxidase-catalyzed oxidative polymerization of m-substituted phenols has been performed in a mixture of a water-miscible organic solvent and buffer at room temperature under air to give a new class of polyphenols. The catalysts used were horseradish and soybean peroxidases (HRP and SBP, respectively). In the polymer…
We develop a mean-field rate-equation model for the kinetics of phase separation in binary mixtures with hard mobile impurities. For impurities preferentially wet by one of the components, the phase separation is arrested in the late stage. The "steady-state" domain size depends strongly on both the particle diffusion…
Various austenitic and ferritic steels were exposed on a water-cooled probe in the superheater area of a straw-fired CHP plant. The temperature of the probe ranged from 450–600°C and the period of exposure was 1400 hours. The rate of corrosion was assessed based on unattacked metal remaining. The corrosion products an…
Aqueous suspensions of alumina and other powders containing no visible morphological anisotropy were tape cast under different conditions to study the role of processing parameters and powder characteristics in the origin of in‐plane sintering shrinkage anisotropy. High anisotropic shrinkage, with the typical shrinkag…
We present the results of ultrafast pump–probe measurements on films of gold-coated gold sulfide nanoshells. The measured change in transmission (ΔT/T) agrees with theoretical calculations that relate the increase in the electron temperature to changes in the Drude and interband components of the gold shell dielectric…