R. Stähler、Wolfgang Bensch2002-07-01Zeitschrift für anorganische und allgemeine Chemie
The novel thioantimonate(III) [Ni(dien)2]9Sb22S42 · 0.5H2O was synthesised under solvothermal conditions by reacting elemental Ni, Sb and S in an aqueous solution of diethylenetriamine (dien) (80%). The compound crystallises in the triclinic space group P1¯, a = 8.997(2) Å, b = 15.293(3) Å, c = 34.434(7) Å, α = 85.51(…
Crystal Structures and PropertiesSolid-state spectroscopy and crystallographyOrganometallic Compounds Synthesis and Characterization
J.T. Burnham、T. Baker、A. Bernstorf 等 16 位作者2002-07-01IEEE Transactions on Power Delivery
A description of the composite insulator brittle fracture phenomenon suitable to allow correct diagnosis of a failure is provided. This paper reports on the number of brittle fractures that have occurred around the world and contains specific empirical data surrounding composite insulator brittle fractures in the US.…
High voltage insulation and dielectric phenomenaPower Transformer Diagnostics and InsulationElectrical Fault Detection and Protection
T. Plackowski、Yuxing Wang、Alain Junod2002-07-01Review of Scientific Instruments
We present a technique for measuring the specific heat (C) and the isothermal magnetocaloric effect (MT) in the temperature range from 30 to 300 K. The method consists of precise measurements of the heat flux between the sample and its surroundings. This design, which uses commercially available Peltier elements as he…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
N.R. Smart、Daniel John Blackwood、L. Werme2002-07-01CORROSION
In Sweden, high-level radioactive waste will be disposed of in a canister with a copper outer container and a cast iron or carbon steel insert. If the iron insert comes into contact with anoxic geological water, anaerobic corrosion will occur. This paper presents a study of the electrochemical aspects of anaerobic cor…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
James B. Thoden、J.M. Henderson、Judith L. Fridovich‐Keil 等 4 位作者2002-07-01Journal of Biological Chemistry
UDP-galactose 4-epimerase catalyzes the interconversion of UDP-Gal and UDP-Glc during normal galactose metabolism. The mammalian form of the enzyme, unlike its Escherichia coli counterpart, can also interconvert UDP-GalNAc and UDP-GlcNAc. One key feature of the epimerase reaction mechanism is the rotation of a 4-ketop…
Protein Structure and DynamicsGlycosylation and Glycoproteins ResearchEnzyme Structure and Function
Gary D. Roberts、Duane M. Revilock、Wieslaw K. Binienda 等 6 位作者2002-07-01Journal of Aerospace Engineering
The fan case in a jet engine is a heavy structure because of its size and because of the requirement that it contain a blade released during engine operation. Composite materials offer the potential for reducing the weight of the case. Efficient design, test, and analysis methods are needed to efficiently evaluate the…
Energetic Materials and CombustionHigh-Velocity Impact and Material BehaviorStructural Response to Dynamic Loads
Padma Gopalan、Luisa Andruzzi、Xuefa Li 等 4 位作者2002-07-01Macromolecular Chemistry and Physics
Monomers with semifluorinated tails on monomeric vinyl hydroquinone cores were synthesized and their polymerization behavior was examined. The resulting semifluorinated mesogen-jacketed liquid-crystalline polymers (MJLCPs) proved to form fairly hydrophobic surfaces with water contact angles of 110–118°. These polymers…
Liquid Crystal Research AdvancementsSurface Modification and SuperhydrophobicitySynthesis and properties of polymers
N.J.M. Le Masson、A. J. J. Box、C.W.E. van Eijk 等 5 位作者2002-07-01Radiation Protection Dosimetry
The potentialities of optically stimulated luminescence (OSL) for personal dosimetry of ionising radiation have stimulated the search for new synthetic materials with good dosimetric properties. The sensitivity of two new OSL materials KMgF3 and NaMgF3 doped with Ce3+ ions has been evaluated and found to be of the sam…
Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesInorganic Fluorides and Related Compounds
R. Visocekas2002-07-01Radiation Protection Dosimetry
After irradiation of a phosphorescent material, the intensity of the afterglow is usually strongly dependent on the temperature: as lower temperatures are reached, it drops below the noise. But sometimes this intensity stops dropping and becomes stationary. It is seen then to decrease slowly with the time t with (1/t)…
Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesPhotoreceptor and optogenetics research
D. Mangaraj2002-07-01Rubber Chemistry and Technology
Abstract Blending of elastomers is often used to enhance he performance characteristics of rubber products. This article reviews the thermodynamic principles underlying polymer-polymer miscibility, with special reference to elastomer blends. It discusses the distribution of fillers, additives and curatives in differen…
Polymer Nanocomposites and Properties
Heinz Werner Höppel、Р. З. Валиев2002-07-01International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde)
Abstract Cyclic deformation behaviour of ultrafine-grained (UFG) materials processed by severe plastic deformation is reviewed in the light of possabilities to enhance the fatigue properties of UFG...
Microstructure and mechanical propertiesAluminum Alloys Composites PropertiesAdvanced Surface Polishing Techniques
Robert H. H. van den Heuvel、Davide Ferrari、R Bossi 等 8 位作者2002-07-01Journal of Biological Chemistry
The complex iron-sulfur flavoprotein glutamate synthase (GltS) plays a prominent role in ammonia assimilation in bacteria, yeasts, and plants. GltS catalyzes the formation of two molecules of l-glutamate from 2-oxoglutarate and l-glutamine via intramolecular channeling of ammonia. GltS has the impressive ability of sy…
Protein Structure and DynamicsEnzyme Structure and FunctionGABA and Rice Research
Kris Kosmider、J J. Scott2002-07-01Filtration & Separation
Kris Kosmider and Jim Scott of Donaldson Co Inc, USA, discuss the theoretical benefits of using sub micron diameter fibres in air filtration applications, and present data from a cartridge element test system to show the practical benefits of nanofibre media.
Surface Modification and SuperhydrophobicityElectrospun Nanofibers in Biomedical ApplicationsElectrohydrodynamics and Fluid Dynamics
C. Ignacio Sainz‐Díaz、Vicente Timón、V. Botella 等 5 位作者2002-07-01American Mineralogist
The structure of dioctahedral 2:1 phyllosilicates with different interlayer charge was studied theoretically using ab initio calculations. The standard Kohn-Sham self-consistent density functional method was used in the generalized gradient approximation (GGA), with numerical atomic orbitals as the basis set, by means…
Crystal Structures and PropertiesClay minerals and soil interactionsIron oxide chemistry and applications
Narayanan Janakiraman、Markus Weinmann、Jörg Schuhmacher 等 7 位作者2002-07-01Journal of the American Ceramic Society
Amorphous Si‐B‐C‐N ceramic powder samples obtained by thermolysis of boron‐modified polysilazane, {B[C 2 H 4 Si(H)NH] 3 } n , were isothermally annealed at different temperatures (1400–1800°C) and hold times (3, 10, 30, and 100 h). A qualitative and semiquantitative analysis of the crystallization behavior of the mate…
Advanced ceramic materials synthesisMXene and MAX Phase MaterialsAdvanced materials and composites
Frank H. Stillinger、Hajime Sakai、Salvatore Torquato2002-07-01The Journal of Chemical Physics
Realistic interactions that operate in condensed matter systems can exhibit complicated many-particle characteristics. However, it is often useful to seek a more economical description using at most singlet and pair effective interactions that are density dependent, to take advantage of the theoretical and computation…
Phase Equilibria and ThermodynamicsHigh-pressure geophysics and materialsMaterial Dynamics and Properties
Xiao‐Dong Zhou、Wayne Huebner、Igor Kosacki 等 4 位作者2002-07-01Journal of the American Ceramic Society
The microstructural evolution and grain‐boundary influence on electrical properties of Ce 0.90 Gd 0.10 O 1.95 were studied. The nanoscale powders synthesized from a semibatch reactor exhibited 50% green density and 92% sintering density at 1200°C (∼200°C lower than previous studies). Impedance spectra as a function of…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsElectronic and Structural Properties of Oxides
Vasiliki Daga、S.K. Hadjikakou、Nick Hadjiliadis 等 6 位作者2002-07-01European Journal of Inorganic Chemistry
Direct reaction of thiazolidine-2-thione (tzdtH), an anti-thyroidal agent with diiodine in a molar ratio of 1:2 caused the heterolytic cleavage of diiodine and formation of [{(tzdtH)2I+}·I3−·2I2] (1), whereas the reaction of benzothiazole-2-thione (bztzdtH) with diiodine in a molar ratio of 1:2 and 1:1 resulted in the…
Crystal structures of chemical compoundsNonlinear Optical Materials ResearchSynthesis and Characterization of Heterocyclic Compounds
Takeshi Fujita、Zenji Horita、Terence G. Langdon2002-07-01Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
Equal-channel angular pressing (ECAP) was used to refine the grain sizes of pure Al and an Al-3 wt% Mg alloy containing minor additions of either Sc or Zr. Following ECAP, the grain sizes were in the ultrafine submicrometre range. Diffusion couples were prepared from the fine-grained material produced by ECAP and from…
Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsHigh Temperature Alloys and Creep
Anna E. Akselrod、M.S. Akselrod2002-07-01Radiation Protection Dosimetry
Al2O3:C single crystals are known to exhibit some variation of their thermoluminescence (TL) glow curve shape from sample to sample. This variation is attributed to the fact that the TL peak in Al2O3:C is produced by the set of several traps. It is important to understand what part of the trap distribution correlates…
Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesNuclear Materials and Properties