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。
As one of effective usages of the wastes in an aluminum regeneration process, the syntheses of hydrotalcite (HT), which is a functional inorganic material having layered structure of complex hydroxide, were carried out by using aluminum dross and MgCl2 waste solution as raw materials. Various physical properties such…
Thirty five low-symmetry tilting phases of the octahedra in which the atoms located at the initial octahedral position remain equivalent are derived for the perovskite structure at the k 10 ( X ), k 11 ( M ), and k 13 ( R ) points of the Brillouin zone. For each low-symmetry phase, structural data are presented and a…
Diatom assemblages from an abalone (rocky) habitat were sampled in April and November 1999 and in April 2000 on the western side of Isla Magdalena, RCS., Mexico. Overall 236 taxa were recorded, including 10 new records, and 56 species that have been observed exclusively in this type of habitat in the Baja California p…
The development of a simple and highly selective method for the preparation of substituted U-shaped terpyridines is described. The treatment of imine 5 with ternary iminium salts 2 leads to the terpyridines 4. A possible mechanism is discussed. The terpyridine derivatives are used for the preparation of several platin…
The dislocation configurations and their interactions with γ-hydrides were investigated in cyclically strained titanium containing 77 ppm hydrogen. At least three sets of dislocations could be activated in hydride precipitates. To accommodate the inhomogeneous strain between the matrix and the hydrides a crystal rotat…
segmented poly(ester-ether)s based on poly(butylene succinate) and two different types of polyethers were investigated. The poly(ester-ether)s were synthesized by transesterification reaction of dimethyl succinate 1,4-butanediol and poly(ethylene oxide) (PEO, Mn = 1000 g/mol) in the first series, and poly(tetramethyle…
We report elongational flow‐induced morphological transition from double gyroid (DG) to hexagonal cylinders in polystyrene‐block‐polybutadiene‐block‐polystyrene triblock copolymer (SBS). First, the SBS sample was fully annealed at 190°C for 24 hr to prepare a DG structure. Then the sample was subjected to planar elong…
Pepsin-hydrolyzed collagen (atelocollagen) is a trimer, consisting of alpha 1 and alpha 2 monomers, and shows molecular species corresponding to a monomer, dimer (beta chain), and trimer (gamma chain) by SDS-polyacrylamide gel electrophoresis. Atelocollagen was purified from yellowfin tuna (Thunnus albacares) by salt…
Tantalum and niobium containing silicon oxycarbide ceramics were prepared from hybrid gels through cohydrolysis with methyltriethoxysilane and pentaethoxyniobium/tantalum, and pyrolysis at 1000°C. To investigate the behavior of free carbon in Si-Nb-C-O and Si-Ta-C-O ceramics, Raman spectroscopy was used. The spectra o…
Development of Intermediate-Temperature SOFC Module Using Doped Lanthanum Gallate , Yamada, T., Chitose, N., Akikusa, J., Murakami, N., Akbay, T., Miyazawa, T., Adachi, K., Hasegawa, A., Yamada, M., Hoshino, K., Hosoi, K., Komada, N., Yoshida, H., Kawano, M., Sasaki, T., Inagaki, T., Miura, K., Ishihara, T., Takita, Y.
Various core materials have been introduced at the terminal end of a discotic mesogen (based on a pentakis(methylphenylethynyl) phenoxy core), resulting in the formation of liquid crystalline ‘monomers’ and ‘dimers.’ The mesomorphic properties of this series of derivatives were investigated as a function of the attach…
Oxidative coupling of methane was studied in a solid oxide fuel cell (SOFC) tube type reactor. La0.85Sr0.15MnO3/8 mol% Y2O3-ZrO2/La1.8Al0.2O3 (abbreviated as LSM/YSZ/LaAlO) were used as a cathode, electrolyte and anode. The C2 selectivity and the methane conversion were 91.7% and 23.7% at 1273 K, respectively. The kin…
The hydrothermal reactions of Na3VO4, tetrapyridylporphyrin (tpypor), phenylphosphonic acid and the appropriate M(II) salt yielded the three-dimensional oxide frameworks [Cu(tpypor){Cu2V2O2(O3PC6H5)4}]·2H2O (1·2H2O) and [Ni(tpypor){V4O4(O3PC6H5)4}]·2H2O (2·2H2O), which are constructed from {X2V2O2(O3PC6H5)4}n chains […
The modified sessile drop method (MSDM) and modified pycnometric method (MPM) have been employed to measure the densities of liquid Ni-Co, Ni-W, Ni-Ta and Ni-Al alloys precisely. In the case of Ni-Al alloys measurements were also made in the “mushy” state where both solid and liquid coexist. There was a good agreement…
The design of Solid Oxide Fuel Cell (SOFC) Hybrid Systems (HS) is usually based on the use of natural gas as fuel. However, the possibility of using other fuels such as biomass gasification, pyrolysis, fermentation, and coal gasification could potentially increase the market for SOFC Hybrid Systems. In this paper, the…
Zenithally bistable nematic liquid crystal devices have been fabricated from a interferometrically defined microgrooved surface and a flat substrate treated with homeotropic surfactant. Two stable states are observed in the devices, one where the liquid crystal is aligned homeotropically (VAN) and the other where the…
Cold headability is the ability of a cylindrical metallic specimen to be shaped at high strain rate into the head of a bolt, screw or other cold-formed part without cracking. This property is material dependent and can be influenced by many factors such as chemical composition, surface condition, and microstructure. T…
The π-donor strength of extended tetrathiafulvalenes (TTFs) has been investigated as a function of the electronic character and length of the spacer between the two dithiole rings. First and second ionisation energies were calculated with B3LYP/6-311++G(2d,p)//B3LYP/6-31+G(d) and B3LYP/6-311++G(2d,p)//PM3 computationa…
Honeycomb patterned polystyrene film was prepared from a polystyrene chloroform solution including polyion complexes by solvent evaporation under high atmospheric humidity. Formation of the honeycomb pattern was owing to the hexagonally packed water droplets which condensed onto the polymer solution. The pore diameter…
Tensile ductility of magnesium alloy ZK60 pre-strained by warm equal channel angular extrusion (ECAE) was investigated at 300°C. It was shown that a significant ductility (262%) is achievable with this technique for a fairly high strain rate of 3·10−3 s−1. The effect of pre-straining by warm ECAE on twinning under roo…