Peter B. Hitchcock、David L. Hughes、Michael J. Maguire 等 5 位作者1997-01-01Journal of the Chemical Society Dalton Transactions
In the presence of [MoH(SC6H2Pri3-2,4,6)3(PMePh2)] in tetrahydrofuran (thf), anhydrous N2H4 disproportionates to N2 and NH3 or is reduced to NH3 by Zn–HOC6H3Pri2-2,6 (69–81% conversion over 16 h). Reaction of [MoH(SC6H2Pri3-2,4,6)3(PMePh2)] with anhydrous N2H4 in thf–MeOH at low temperature gave the complex [MoH(SC6H2…
Corrosion Behavior and InhibitionAsymmetric Hydrogenation and CatalysisMetalloenzymes and iron-sulfur proteins
V. V. Kalyan Chakravarthy、Arnold M. Guloy1997-01-01Chemical Communications
Synthesis and crystal structure of [C 6 H 10 N 2 ]Pb 2 I 6 ·3thf which contains a novel lead iodide polymeric anion with a double-chain structure.
Crystal Structures and PropertiesNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
Yannicke Dauphin、Jean‐Pierre Cuif1997-01-01Electrophoresis
Soluble matrices of four Scleractinian skeletons (Madrepora, Favia, Leptastrea and Fungia), were extracted and studied by isoelectric focusing (IEF). The main part of the extracted matrices is acidic. IEF gels are poorly stained or unstained by Coomassie Blue and silver. The positive Alcian Blue staining is indicative…
Meat and Animal Product QualityCalcium Carbonate Crystallization and InhibitionCephalopods and Marine Biology
David Jiles、Akhil K. Ramesh、Yanchen Shi 等 4 位作者1997-01-01IEEE Transactions on Magnetics
The existing isotropic model equations of hysteresis in magnetic materials have been extended to include the effects of anisotropy and texture. This has proved particularly important as the model has been used to describe an increasing range of magnetic materials in which anisotropy plays a significant role, for examp…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
A. R. R. Menon1997-01-01Journal of Fire Sciences
Natural rubber (NR) in a typical semi-efficient vulcanization system was modified with flame-retardant additives such as bromo derivative of phosphorylated cashew nut shell liquid, antimony trioxide and alumina tri hydrate (ATH). Improvement in the flame retardancy of the vulcanizates was shown by the progressive incr…
Polymer Nanocomposites and PropertiesFlame retardant materials and propertiesThermal and Kinetic Analysis
B. Parvatheeswara Rao、P.S.V. Subba Rao、K. H. Rao1997-01-01IEEE Transactions on Magnetics
The approach of simultaneous substitutions by aiming at a systematic dilution of both of the sublattices to obtain the highest possible magnetization in a given system has been made use of, since this parameter is highly desirable in the fabrication of core materials for switched mode power supplies (SMPS), Ferrite se…
Magnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materialsMagneto-Optical Properties and Applications
Leonidas G. Bachas、Lawrence Cullen、Richard S. Hutchins 等 4 位作者1997-01-01Journal of the Chemical Society Dalton Transactions
The ability to prepare polymer films on the surface of glassy carbon electrodes (GCEs) by electrochemical polymerization of transition-metal complexes of 5-amino-1,10-phenanthroline (aphen) was investigated. Eight different metal ions (Mn II , Fe II , Co II , Ni II , Cu II , Zn II , Ru II and Os II ) were studied. A s…
Conducting polymers and applicationsPorphyrin and Phthalocyanine ChemistryAnalytical Chemistry and Sensors
A.J. Moses、Nedim Tutkun1997-01-01IEEE Transactions on Magnetics
The pulse width modulation (PWM) inverter is widely used when voltage-frequency regulation is required. When laminated cores are energised by PWM voltage supplies additional losses occur due to flux distortion. The iron loss of three types of grain-oriented 3.25% Si-Fe toroidal cores was measured by means of a compute…
Silicon Carbide Semiconductor TechnologiesMicrostructure and Mechanical Properties of SteelsMagnetic Properties and Applications
Greg Kopp、Michael J. Derks、D. Elmore 等 7 位作者1997-01-01Applied Optics
A Lyot-Ohman filter for imaging near the solar He i 1083-nm line is described. Fast and continuous spectral tunability is provided by nematic liquid crystals. This solid-state filter has a free spectral range of 2.35 nm and a spectral resolution of 0.135 nm at the operating wavelength of 1083 nm. A wide-fielded design…
Liquid Crystal Research AdvancementsOptical Polarization and EllipsometryCharacterization and Applications of Magnetic Nanoparticles
C. Cester、A. Kedous-Lebouc、B. Cornut1997-01-01IEEE Transactions on Magnetics
A study of additional loss in an induction motor supplied by a PWM inverter is presented in this paper. The magnetic material used in the motor is characterized, thanks to a suitable Epstein measurement equipment, under several excitation conditions: sine and ideal PWM waveforms similar to the voltage delivered by the…
Electric Motor Design and AnalysisMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
Si‐Young Chang、Hiroyasu Tezuka、Akihiko Kamio1997-01-01Materials Transactions JIM
The effects of calcium and zirconium additions on the microstructures and mechanical properties have been investigated in the squeeze-cast ignition-proof magnesium alloys. The marked grain refining is achieved by the combined addition of calcium and zirconium because calcium promotes the dissolution of zirconium into…
Magnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesHydrogen Storage and Materials
BS Phull、SJ Pikul、R. M. Kain1997-01-01OpenAlex
A world-wide test program was undertaken by ASTM Task Group Gl.09.02.03 to assess the relative corrosivity of seawater at 14 test sites. Aluminum alloy 5086 (UNS A95086), 90/10 copper-nickel (UNS C70600), and copper-bearing carbon steel (UNS K01501) test specimens were prepared at one location, shipped to the various…
Corrosion Behavior and InhibitionMaritime and Coastal Archaeology
Malcolm H. Chisholm、Suri S. Iyer、Michael E. Matison1997-01-01Chemical Communications
HETCOR NMR spectra reveal that previous assignments of the stereochemistry of poly(lactide) derived from rac and meso-lactide are incorrect; an alternative assignment is made at the tetrad level of resolution.
biodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical ApplicationsBiopolymer Synthesis and Applications
D. Bahloul、Mario Pereira、Corine Gérardin1997-01-01Journal of Materials Chemistry
The cross-linking reactions and the decomposition processes of three different polysilazane precursors to silicon carbonitride have been investigated systematically in the course of pyrolysis to 1400 °C. The polymer to ceramic conversion chemistry was studied for the following precursors: (ViSiHNH) n (VS), (ViSiHNMe)…
Advanced ceramic materials synthesisThermal and Kinetic AnalysisSilicone and Siloxane Chemistry
Paula Jean Clapp、Bruce A. Armitage、David F. O’Brien1997-01-01Macromolecules
The sensitized polymerization of synthetic lipid bilayers via visible-light irradiation of membrane-bound cyanine dyes is reported. Visible-light-initiated polymerizations were successful with liposomes composed solely or partly of either 1-palmitoyl-2-[10-(2‘,4‘-hexadienoyloxy)decanoyl]- sn -glycero-3-phosphatidylcho…
Advanced Polymer Synthesis and CharacterizationLipid Membrane Structure and BehaviorPhotochromic and Fluorescence Chemistry
Yuko Ikeda、Akira Tanaka、Shinzo Kohjiya1997-01-01Journal of Materials Chemistry
In situ silica reinforcement of styrene–butadiene rubber (SBR) vulcanizate has been achieved by the sol–gel reaction of tetraethoxysilane (TEOS) using n-butylamine as a catalyst. SBR was vulcanized with sulfur and soaked in TEOS and in an aqueous solution of the catalyst. When hydrochloric acid was used as a catalyst…
Silicone and Siloxane Chemistry
James E. Bateman、Benjamin R. Horrocks、Andrew Houlton1997-01-01Journal of the Chemical Society Faraday Transactions
A simple method for studying the reactivity of hydrogen-terminated silicon surfaces via transmission FTIR spectroscopy is described. Abraded (100) single crystals of silicon, after etching in ammonium fluoride, show features in the IR spectrum that are assigned to Si–H stretching vibrations. Confirmation of the utilit…
Gas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsSilicon Nanostructures and Photoluminescence
Hiroyuki Abe Hiroyuki Abe、Masami Terauchi Masami Terauchi、Michiyoshi Tanaka Michiyoshi Tanaka 等 5 位作者1997-01-01Japanese Journal of Applied Physics
Electron energy-loss spectra of VO 2 have been measured from perfect single crystalline areas of 100–180 nm diameter in the metallic and insulating phases. A sharp peak has been observed at 1.2 eV in the valence electron excitation spectra of the metallic phase but not in those of the insulating phase. We assign the p…
Gas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsGa2O3 and related materials
Andreas Ertl1997-01-01OpenAlex
Chemical analyses of tourmaline crystals from a small pegmatite body, nearby the Stoihtte, Koralpe (Styria, Austria), exhibit a pronounced excess in boron, expressed by the simpli¢ed formula (Na0.43 Ca0.24&0:33) (Al2.43Li0.33&0:28)Al6(BO3)3(B1.23 Si4.87 O18)(O0.64(OH)3.36). A substantial substitution of silicon by bor…
Crystal Structures and PropertiesX-ray Diffraction in CrystallographyMineralogy and Gemology Studies
Tracey A. Munro、Bradley D. Smith1997-01-01Chemical Communications
Amino acids are transported with high fluxes through plasticized cellulose triacetate membranes containing large amounts of quaternary tetraalkylammonium salts; similar results are obtained using analogous polymer-supported liquid membranes.
Supramolecular Chemistry and ComplexesSupramolecular Self-Assembly in MaterialsCovalent Organic Framework Applications