Materials Literature
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A study has been made on the effects of Al, Si and Mo on anodic polarization characteristics of Fe–10Cr alloys in 0.05–1.0 kmol·m−3 H2SO4 and NaCl solutions. Potential decay curves have also been measured in order to evaluate the stability of the passive films formed on Fe–10Cr alloys containing Al, Si and Mo. The ana…
The ferroelectricity of perovskite oxide CdTiO3 was ascertained by the measurements of the dielectric constant, D-E loops, and pyroelectricity. The ferroelectric Curie temperature TC was about 80 K and the residual electrical polarization was 0.2 μC/cm2. Below TC , the temperature dependence of the lattice parameter a…
A silicone-containing epoxide named as EPSIB was prepared For silk crease-resist finishing. The major influence parameters for the synthesis of EPSIB were discussed. These treatments are shown to improve significantly both dry and wet resiliencies of silk with a good laundering durability. The shrinkage of finished si…
The Raman spectra of Na2O–Al2O3–SiO2 system with different Al2O3contents (up to 25 mol%) and with Na2O/SiO2ratio from 1 to2have been measured at 1 673 K.In the disilicate systems, the Raman spectra do not change significantly with increasing of Al2O3 content except the development of the 500 cm-1 band which is assigne…
The structure of a pentagonal quasicrystal, which has been called “basic Co-rich state of Al–Co–Ni decagonal quasicrystals”, in an Al72.5Co17.5Ni10 alloy annealed at 900°C for 40 hr has been studied by high-angle annular detector dark-field scanning transmission electron (HAADF-STEM). An observed HADDF-STEM image clea…
Three novel complexes, [Ag(S,S-1)][CF3SO3] (3), [Ag(S,S-2)][CF3SO3]·0.5H2O (4) and [Ag(R,R-2)][CF3SO3]·0.5H2O (5) [1 = 2,2-bis(4′-benzyloxazolin-2′-yl)propane, 2 = 2,2-bis(4′-phenyloxazolin-2′-yl)propane] were obtained from silver trifluoromethanesulfonate and the corresponding bis(oxazoline) ligands. The crystal stru…
In this thesis, a schematic model for the structure ofaggregated cellulose I fibrils is proposed. The model consistsof a crystalline fibril core surrounded by less orderedcellulose forms. These cel ...
The Solid State Energy Conversion Alliance (SECA) was initiated in the fall of 1999 to encourage the development of environmentally friendly solid oxide fuel cell (SOFC) modules for use with commonly available fossil fuels at low cost. In order to quickly achieve the necessary manufacturing volume to reduce costs to c…
Based on a plane-wave pseudopotential method,the electronic structure calculations of NaNO2 from first principles are perforined.The linear refractive indices and the static second-harmonic generation (SHG) coefficients are also calculated by the SHG formula improved by us.The calculated values are in good agreement w…
Pure magnesium powder was mechanically alloyed with SiO2 powder by using a planetary ball mill under an Ar atmosphere. After mechanical alloying, the powder was consolidated to the P/M material by vacuum hot pressing.
Paleosols, which are known as soils formed during the past climatic conditions, part of south India in Anantapur district of Andhra Pradesh are described here. Morphological properties of five pedons (P1 to P5} like depth, colour, structure, texture, presence of clay cutans, etc. and physical and chemical properties s…
Composites of mullite and zirconia were fabricated via the cyclic infiltration of porous zirconia‐based preforms with a liquid mullite precursor. The maximal amount of mullite precursor that could be infiltrated was dependent primarily on the initial open porosity of the preforms. When a zirconia preform with an initi…
Amplitude ratios of various reflected and transmitted elastic waves from a plane interface separating a viscous liquid half‐space and a micropolar elastic solid half‐space, are obtained in two cases (i) when longitudinal wave propagating through the solid half‐space is made incident at the interface and (ii) when “cou…
Calcification limits the long-term durability of xenograft glutaraldehyde (GA)-crosslinked heart valves. Previously, a study in rats showed that epoxy-crosslinked heart valves reduced lymphocyte reactions to the same extent as the GA-crosslinked control and induced a similar foreign-body response and calcification rea…
An array of 10 µm sized microlenses was fabricated from the adhesion of a silicasol on a polysilane film patterned by UV-light irradiation. This was achieved by increase in wettability to the aqueous sol–gel solution induced by the UV-photodecomposition of polysilane. By simply soaking the UV-patterned polysilane film…
Research Article| January 01, 2001 Simulating the Crystal Structures and Properties of Ionic Materials From Interatomic Potentials Julian D. Gale Julian D. Gale Department of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, SW7 2AY, U.K. Search for other works by this author o…
The influence of the surface topography of aluminum alloy (Al) on the heterogeneous nucleation of isotactic polypropylene (iPP) at the iPP/Al interface has been investigated using a polarized optical microscope (POM) with a hot stage. Different textures of the Al surface were prepared by electrochemical processes, inc…
The simple salt CuCl2·2H2O, and the new Cu-substituted polyoxometalate (POM), Na7[CuCoW11O39]·5H2O 1 are highly efficient catalysts for the oxidation of ascorbic acid by peroxynitrite.
A single crystal of a Ti–51Ni (at%) alloy was grown by floating zone method, and Ti3Ni4 precipitates of a single variant were formed coherently to the matrix by aging treatment under a compressive stress applied along the [111] direction. By using this single crystal, two-way (all-round) shape memory property was inve…
Two new compounds, 3-O-beta-D-glucopyranosyl-3 beta, 15 alpha-dihydroxypregn-5-en-20-one (1) and (-)-secoisolariciresinol-O-alpha-L-rhamnopyranoside (2), along with six known compounds (3-8), have been isolated from the aerial parts of Rubus amabilis Focke. The structures of the new compounds were elucidated mainly by…