Materials Literature
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In this work we present electrical resistivity, magnetic susceptibility, and electron spin resonance data at high temperature of the ${\mathrm{Sr}}_{2}{\mathrm{FeMoO}}_{6}$ double perovskite. We found between 300 K and 900 K two metal-insulator transition temperatures at ${T}_{c}\ensuremath{\approx}405$ K and $\ensure…
The applications of magnesium alloys for designing aerospace structure systems are focused in this paper. As the material properties of magnesium alloys have advantages of light weight, high specific stiffness, and high damping characteristics, they are supposed to be advantageous for designing light-weight aerospace…
Atomistic simulations with atomic potentials including anion polarizibility have been performed for the low‐index surfaces of spinel MgAl 2 O 4 with various terminations. The calculations show that for the most stable surface the surface energy is 2.27 J/m 2 for the {100}, about 2.85 J/m 2 for the {110}, and 3.07 J/m…
Among the light metal alloys, magnesium is the lightest structural material with a density of 1.74 g/cm 3 and many attractive physical and mechanical properties combined with processing advantages. Therefore, it represents a very attractive material for a large amount of applications from main user automotive industry…
Resin composition, silicate filler modification, and curing agents were varied systematically in order to improve the performance of anhydride-cured epoxy nanocomposites based upon organoclay. The filler component was fluorohectorite which was rendered organophilic by means of cation exchange of intergallery sodium ca…
We report formation of single‐ and two‐phase glasses from rare‐earth oxide–alumina materials. Liquids with the Y 3 Al 5 O 12 and Er 3 Al 5 O 12 compositions underwent a liquid–liquid phase transition which resulted in glasses with a cloudy appearance due to spheroids of one glass in a matrix of a second glass. The two…
Abstract Area-weighted thickness distributions of fundamental illite particles for samples of illite and illite-smectite from seven locations (including bentonites and hydrothermally altered pyroclastics) were measured by Pt-shadowing technique, by transmission electron microscopy. Most thickness distributions are des…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTPhotoswitching of Intramolecular Magnetic Interaction Using a Photochromic Spin Coupler: An ESR StudyKenji Matsuda and Masahiro IrieView Author Information Department of Chemistry and Biochemistry Graduate School of Engineering, Kyushu University CREST, Japan Science a…
The gene for a 104-kDa exocellulase, Cel48A, formerly E6, was cloned from Thermobifida fusca into Escherichia coli and Streptomyces lividans. The DNA sequence revealed a type II cellulose-binding domain at the N-terminus, followed by a FNIII-like domain and ending with a glycosyl hydrolase Family 48 catalytic domain.…
Recent years have witnessed increasing interest in the synthesis of low-symmetry single phthalocyanines (Pcs) since they may show, among other applications and advantages, interesting second-order nonlinear optical (NLO) properties. This potential of unsymmetrically substituted and regioisomerically pure phthalocyanin…
Tb 3+ and Eu3+ were codoped in zeolite-Y. Their photoluminescence and photostimulated luminescence were investigated. Due to the dissipation of excitation energy by OH vibrations, the luminescence from the hydrated zeolite containing Tb3+ and Eu3+ prepared at room temperature is very weak. However, the luminescence is…
Powders of nanocrystalline zirconia doped with 3–30 mol% alumina have been synthesized using chemical vapor synthesis (CVS). Dense or mesoporous ceramics of small and narrowly distributed grain and pore sizes in the nanometer range are obtained via pressureless vacuum sintering. The microstructural development of the…
The states and dynamic behavior of acidic protons and water molecules in solid H 3 PW 12 O 40 · n H 2 O (0 < n < 6), which would be closely related to its pseudoliquid phase catalysis, were quantitatively elucidated by the comprehensive application of 31 P, 1 H, and 17 O magic-angle spinning (MAS) NMR. 1 H and 17 O MA…
The biaxial flexural strength and fracture toughness of tape‐cast yttria‐stabilized zirconia, for application as the electrolyte in solid oxide fuel cells, have been measured at room temperature and at a typical operating temperature of 900°C. The flexural strength was measured in ring‐on‐ring loading and decreased fr…
The present study investigates the influence of the content of Y 2 O 3 –Al 2 O 3 sintering additive on the sintering behavior and microstructure of Si 3 N 4 ceramics. The Y 2 O 3 :Al 2 O 3 ratio was fixed at 5:2, and sintering was conducted at temperatures of 1300°–1900°C. Increased sintering‐additive content enhanced…
The functions of aminotelopeptide and N-terminal cross-linking of collagen I were examined. Acetic acid-soluble collagen I (ASC) was purified from neonatal bovine skin and treated with three kinds of proteases. The amino acid sequencing analysis of the N terminus showed that ASC contained a full-length aminotelopeptid…
In-situ Raman spectroscopy has been used to characterize the transformation of amorphous zirconium oxyhydroxide to tetragonal ZrO 2 and then to monoclinic ZrO 2 in both the absence and presence of water vapor. In the absence of H 2 O vapor, t-ZrO 2 forms when zirconium oxyhydroxide is treated in air above 673 K and th…
Deposition conditions of cuprous oxide (Cu 2 O) thin films on glass substrates by reactive radio-frequency (rf) magnetron sputtering method were studied. The substrate temperature was found to be important for obtaining high-quality films, and the optimum substrate temperature was about 500°C. The Cu 2 O deposited at…
Two polymorphic malonato-bridged copper(II) complexes of formula ([Cu(bpy)(H2O)][Cu(bpy)(mal)(H2O)])-(ClO4)2 (1 and 2) (bpy = 2,2'-bipyridine and mal = malonate dianion) have been prepared and their structures solved by X-ray diffraction methods. Compound 1 crystallizes in the monoclinic space group P2(1)/a, with a =…
Although active targeting of anticancer drugs using magnetically responsive carriers is a very attractive treatment approach for solid tumors, successful results are limited. In particular, the therapeutic utility of intravenously administered magnetically responsive carriers has to date not been clearly established.…