Franziska Emmerling、Mamdouh Idilbi、Caroline Röhr2002-06-01Zeitschrift für Naturforschung B
Abstract The title compounds have been synthesized via oxidation of the elemental pnicogenes (M = As, Bi) with the hyperoxides AO 2 (A = K, Rb, Cs) and their crystal structures were determined on the basis of single crystal X-ray data. In K 3 AsO 4 (orthorhombic, Cccm, a = 1060:1(1), b = 1135:2(1), c = 1694:0(2) pm, Z…
Crystal Structures and PropertiesPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization
Μ. Fleck、Uwe Kolitsch、B. Hertweck 等 7 位作者2002-06-01Zeitschrift für Kristallographie - Crystalline Materials
Abstract The crystal structures of the four synthetic double salt compounds K 2 Mn(SO 4 ) 2 ·2H 2 O (space group P 1̅, no. 2, Z = 2, a = 6.574(1), b = 7.332(1), c = 10.700(1) Å, α = 72.89(1), β = 73.91(1), γ = 69.77(1)°, V = 453.6(1) Å 3 ) and K 2 Cd(SeO 4 ) 2 ·2H 2 O(space group P 1̅, no. 2, Z = 2, a = 6.625(1), b =…
Crystal structures of chemical compoundsCrystallography and molecular interactionsCrystal Structures and Properties
Stefan Müller‐Hülsbeck、Knut P. Walluscheck、Markus Priebe 等 6 位作者2002-06-01Investigative Radiology
RATIONALE AND OBJECTIVES: To evaluate endothelial cell (EC) attachment on different stents and stent-grafts combined with different coating materials. MATERIALS AND METHODS: Three segments (approximately 1cm(2) each) of Cragg-, Memotherm-, Palmaz-, Strecker-, and Wall-stents, uncovered or covered with polytetrafluoroe…
Coronary Interventions and DiagnosticsElectrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studies
J.-M. Gonnet、Jacques Guillet、I. Sirakov 等 5 位作者2002-06-01Polymer Engineering and Science
Abstract In recent years, experimental techniques based on microdielectrometry have attracted increasing interest for continuous monitoring, in a nondestructive way, of the advancement of the reaction of thermoset resins under cure. The extension of this technique for “ in ‐ situ ” monitoring of the crystallization of…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesInjection Molding Process and Properties
L.M. Zhou、K.W. Yeung、C.W.M. Yuen2002-06-01Textile Research Journal
The effect of NaOH mercerization on the crosslinking properties of 1,2,3,4-butanetet racarboxylic acid (BTCA) on ramie yarn is studied, with emphasis on mercerization tension. NaOH at mercerization strength decrystallizes the ramie fibers, resulting in a higher accessibility to BTCA. Due to the change in fiber orienta…
Dyeing and Modifying Textile FibersTextile materials and evaluationsResearch in Cotton Cultivation
В. С. Днепровский、E. A. Zhukov、О. А. Shalygina 等 7 位作者2002-06-01Journal of Experimental and Theoretical Physics
Features of the photoluminescence spectra observed for various polarizations and intensities of the pumping radiation and the kinetics of photoluminescence of the CdS and CdSe nanocrystals grown in hollow nanochannels of an Al 2 O 3 matrix are explained in terms of exciton transitions in semiconducting quantum wires w…
Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesNanowire Synthesis and Applications
D. Paget、Olivia Pulci、M. Sauvage 等 8 位作者2002-06-01Surface Review and Letters
While the As-rich 2 × 4 reconstruction of GaAs(001) is well explained by the so-called β 2 structure, the atomic structure of the Ga-rich 4 × 2 phase has been discussed for a long time. In this review, the most important structural models for the GaAs(001) (4 × 2)/c(8 × 2) surface are compared from different theoretic…
Advanced Chemical Physics StudiesGaN-based semiconductor devices and materialsElectron and X-Ray Spectroscopy Techniques
M.A. Quraishi、Vikas Bhardwaj、J. P. Rawat2002-06-01Journal of the American Oil Chemists Society
Abstract Six organic volatile corrosion inhibitors (VCI) were synthesized using lauric hydrazide with various acids such as cinnamic acid, succinic acid, nitrobenzoic acid, phthalic acid, and maleic acid and evaluated as corrosion inhibitors of mild steel, copper, brass, zinc, and aluminum by weight loss and potentiod…
Corrosion Behavior and InhibitionAnalytical Chemistry and SensorsConcrete Corrosion and Durability
Enhai Sun、Takafumi Kusunose、Tohru Sekino 等 4 位作者2002-06-01Journal of the American Ceramic Society
The formation mechanism of ZrSiO 4 in the cordierite‐ZrO 2 system was studied in the temperature range of 1250° to 1400°C by X‐ray diffraction analysis and discussed by analyzing experimental data using some reported reaction models. Nuclei growth models were found to describe the reaction well, and a satisfactory fit…
Advanced ceramic materials synthesisGlass properties and applicationsMicrowave Dielectric Ceramics Synthesis
W. Zhang、J.-Q. Li、Yuxian Wu 等 5 位作者2002-06-01Surface Engineering
Non-chromate conversion films are formed on the surface of an Al-Z n-Mg-Cu alloy using a two step cerium salt treatment. The corrosion resistance of the alloy in chloride solution has been studied after the non-chromate treatment. It was found that the conversion film could greatly improve the corrosion resistance of…
Corrosion Behavior and InhibitionAluminum Alloy Microstructure PropertiesAnodic Oxide Films and Nanostructures
Tao Lű、David Yevick2002-06-01Journal of the Optical Society of America A
We apply the boundary element method to the analysis of optical waveguides. After summarizing constant and linear element algorithms for both two- and three-dimensional simulations, we introduce a new recursive series procedure for constructing the diagonal matrix elements. We then demonstrate that our method can be e…
Photonic and Optical DevicesElectromagnetic Simulation and Numerical MethodsOptical Coatings and Gratings
P. C. J. Graat、Marcel A.J. Somers、E. J. Mittemeijer2002-06-01International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde)
Author: Graat, P. C. J. et al.; Genre: Journal Article; Issued: 2002-06; Keywords: MPI für Metallforschung; Abt. Mittemeijer; 30-mi_2002; iron; iron nitride; oxidation; nitrogen; Title: On the kinetics of the initial oxidation of iron and iron nitride
Catalytic Processes in Materials ScienceSemiconductor materials and devicesAdvanced Materials Characterization Techniques
Sourav Dutta、Syed Minhaz Hossain、Suparna Chakraborty 等 4 位作者2002-06-01physica status solidi (a)
Conductivity of Porous Silicon (PS) can be modulated significantly by controlling its formation parameters like anodization current density and HF concentration in the electro-chemical cell and the doping concentration of the silicon wafer. It is established that not only the porosity but also the uniformity of the PS…
Semiconductor materials and devicesSilicon Nanostructures and PhotoluminescenceNanowire Synthesis and Applications
Andrew J. Berry、M. James2002-06-01Mineralogical Magazine
Abstract The structure of a natural sample of chondrodite (Mg 4.89 Fe 0.07 Si 2.04 O 8 F 1.54 (OH) 0.46 ) was refined using powder neutron diffraction data and the Rietveld technique ( P 2 1 / b ; Z = 2; a = 4.7204(1)Å; b = 10.2360(3)Å; c = 7.8252(2)Å; α = 109.11(1)°; V = 357.26(2)Å 3 ). Hydrogen was found to occupy t…
Geological and Geochemical AnalysisCrystal Structures and PropertiesClay minerals and soil interactions
I. P. Raevskii、M. P. Ivliev、Л. А. Резниченко 等 6 位作者2002-06-01Technical Physics
Composition ( x )-temperature ( T ) phase diagrams obtained for the first time for single-crystalline (Na,Li)NbO 3 (system I) and (Na,K)NbO 3 (system II) niobates are compared with the known phase diagrams for ferroelectric niobate ceramics prepared by various techniques (standard firing and hot pressing). In system I…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Yusaku Iwata、Hiroshi Koseki2002-06-01Process Safety Progress
Abstract The thermal property of HA/water solution was studied from the calorimetric data obtained using differential thermal analysis (DTA). The intensity of decomposition was studied from results of a mini closed pressure vessel test (MCPVT), and a pressure vessel test (PVT), in addition to the steel tube test. The…
Energetic Materials and CombustionCombustion and Detonation ProcessesThermal and Kinetic Analysis
Chih‐Peng Lin、Shaw‐Bing Wen2002-06-01Journal of the American Ceramic Society
In this paper, we describe variations in a boehmite (AlOOH) and oleic acid emulsion during the process of forming superfine α‐Al 2 O 3 crystallites from the mixture of oleic acid and a boehmite gel precursor. We also propose that the oleic acid decomposes under calcination, generating carbon, which can effectively pre…
Surface Modification and SuperhydrophobicityPolymer Nanocomposites and PropertiesClay minerals and soil interactions
О. Е. Kvyatkovskii2002-06-01Physics of the Solid State
Cluster calculations of the local adiabatic potential for an impurity atom in position A in Sr 1− x A x TiO 3 ( A =Mg, Ca, Ba, Pb, Cd, Zn), as well as for the Nb and O atoms in the Ta-O-Nb chain in KTa 1− x Nb x O 3 , were carried out in the nonempirical Hartree-Fock-Roothaan MO-LCAO formalism. For comparison, similar…
Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsPhotorefractive and Nonlinear Optics
Winfried Plass、Axel Pohlmann、P. Siva Subramanian 等 4 位作者2002-06-01Zeitschrift für anorganische und allgemeine Chemie
The synthesis, characterization and crystal structures of substituted imidazolate bridged binuclear copper(II) complexes, [Cu2(dien)2(L)](ClO4)3, where dien = diethylenetriamine, L = imidazolate (im—) (1), 2-methylimidazolate (mim—) (2) and benzimidazolate (bim—) (3), are reported. The copper(II) ions of 1—3 posses a…
Metal-Organic Frameworks: Synthesis and ApplicationsMetal complexes synthesis and propertiesMagnetism in coordination complexes
Mikio Nakashima、Toshiki Fukui、Nobuyuki Nakashio 等 7 位作者2002-06-01Journal of Nuclear Science and Technology
As a part of an advanced volume reduction program for low level radioactive wastes in JAERI, melting tests of non-metallic solid wastes have been conducted with the aim of establishing the optimum melting condition for preparation of a stable solid that is suitable for disposal. Simulated non-metallic wastes containin…
Recycling and utilization of industrial and municipal waste in materials productionNuclear materials and radiation effectsGraphite, nuclear technology, radiation studies