Yulia Uvarova、Elena Sokolova、F. C. Hawthorne 等 5 位作者2004-08-01The Canadian Mineralogist
The crystal structure of arapovite, ideally U4+ (Ca,Na)2 (K1– x □ x ) [Si8 O20], x ≈ 0.5, tetragonal, a 7.5505(4), c 14.7104(9) A, V 838.6(1) A3, space group P 4 /mcc , Z = 2, D calc. 3.365 g/cm3, was refined to an R 1 index of 2.9% based on 528 observed [ F o > 4σ F ] unique reflections measured with Mo K α radiation…
Geological and Geochemical AnalysisCrystal Structures and PropertiesRadioactive element chemistry and processing
M. F. Frolish、J. H. Beynon2004-08-01Ironmaking & Steelmaking Processes Products and Applications
This research centres on surface initiated damage on back-up rolls whereby rolling contact fatigue cracks can propagate into the rolls potentially reaching the internal stress fields and leading to catastrophic failure and has sought to establish design criteria for avoiding such failures. The project objectives have…
Mechanical stress and fatigue analysisMetal Alloys Wear and PropertiesTunneling and Rock Mechanics
L. Pandolfi、S. Kačiulis、G. Padeletti 等 5 位作者2004-08-01Surface and Interface Analysis
Abstract Thin films of zirconium titanate ZrTiO 4 (ZT) were prepared by the MOCVD technique. ZT layers were deposited in air on silicon substrates by using a non‐conventional MOCVD system. The chemical composition of these films was investigated by XPS. More information on the thin film structure was obtained from the…
Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesMicrowave Dielectric Ceramics Synthesis
Г. Е. Малашкевич、G. I. Semkova、А. П. Ступак 等 4 位作者2004-08-01Physics of the Solid State
Terbium-and (Ce, Tb)-containing glasses prepared using the direct sol-gel-glass transition are studied. It is shown that glasses doped with one activator contain two main types of optical centers, namely, isolated and complex centers, which are characterized by weak and strong cross-relaxation quenching of luminescenc…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsMineralogy and Gemology Studies
G Konstantas、A. M. Stamatelos2004-08-01Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering
Tight requirements posed by the increasingly stringent legislation complicate the design procedure for exhaust aftertreatment devices and systems. Since design optimization relies heavily on experiments and tests, emissions test data acquisition should comply with strict quality standards. Time-varying exhaust emissio…
Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceVehicle emissions and performance
Sabit Adanur、Tacibaht Turel2004-08-01Textile Research Journal
In Part I of this series, air pressure and air velocity are measured on an air-jet filling insertion simulator with tube and profiled reed. In this second part, the filling yarn insertion time is measured on the air-jet filling insertion simulator with the profiled reed, and yarn velocity is calculated. The effects of…
3D Shape Modeling and AnalysisTextile materials and evaluationsIndustrial Vision Systems and Defect Detection
Pierre Rolland、Vincent Carlino、Ronald Vane2004-08-01Microscopy and Microanalysis
Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis
J.-M. Le Canut、S. Maximovitch、F. Dalard2004-08-01Journal of Nuclear Materials
Nickel alloy steam generator tubes of pressurized water reactors (PWR) are sensitive to stress corrosion cracking (SCC) and the possibility of predicting SCC from electrochemical measurements is of considerable interest for nuclear industry. The electrochemical properties of several nickel-based alloys were studied at…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsHigh Temperature Alloys and Creep
Ajay J. Khopade、Dinesh B. Shenoy、Surekha A. Khopade 等 4 位作者2004-08-01Langmuir
The effect of 4th generation poly(amidoamine) dendrimer (4G PAMAM) present in an anionic phospholipid composition, consisting of hydrogenated soyphosphatidylcholine (HSPC), cholesterol (CH), dicetyl phosphate (DCP), and poly(ethylene glycol) (Mw approximately 2000) derivatized phosphatidylethanolamine (PEG2000-PE), on…
Lipid Membrane Structure and BehaviorRNA Interference and Gene DeliveryDendrimers and Hyperbranched Polymers
Geraldo Bortoletto Júnior、José Nivaldo Garcia2004-08-01Revista Árvore
Em uma indústria de móveis estofados, localizada em Piracicaba, SP, foram coletados aleatoriamente corpos-de-prova de painéis compensados e OSB para determinação das propriedades de resistência (MOR) e rigidez (MOE) à flexão estática, com as finalidades de compará-las e avaliar a possibilidade de substituição direta d…
Mechanical Behavior of CompositesNatural Fiber Reinforced CompositesTextile materials and evaluations
Shinya Urata、Hiroyasu Shimoji、Takashi Todaka 等 4 位作者2004-08-01International Journal of Applied Electromagnetics and Mechanics
This paper presents measured results of the two-dimensional vector magnetic properties in electrical steel sheets under high frequency excitation conditions. The relationship among the maximum flux density, the magnetizing direction, the exciting frequency, the axis ratio of the rotating flux density(the ratio of the…
Magnetic Properties and ApplicationsNon-Destructive Testing TechniquesInduction Heating and Inverter Technology
Ken Kurosaki、Mitsuhiro Imamura、Isamu Sato 等 6 位作者2004-08-01Journal of Nuclear Science and Technology
The molecular dynamics (MD) calculation was performed for minor actinide (MA: Np and Am) dioxides in the temperature range from 300 to 2,500K to evaluate the thermophysical properties viz., the lattice parameter, thermal expansion coefficient, compressibility, heat capacity, and thermal conductivity. The Morse-type po…
Rare-earth and actinide compoundsNuclear Materials and PropertiesThermodynamic and Structural Properties of Metals and Alloys
Ivaylo Dimitrov、Hildegard Kukula、Helmut Cölfen 等 4 位作者2004-08-01Macromolecular Symposia
Abstract Linear polystyrene‐ block ‐poly(Z‐L‐lysine) copolymers with a very narrow molecular weight distribution (polydispersity index < 1.03) could be obtained via the ring‐opening polymerization of Z‐L‐lysine‐ N ‐carboxyanhydride using ω‐(primary amino hydrochloride)‐polystyrenes as macroinitiators in N,N ‐dimeth…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesBiopolymer Synthesis and Applications
Linda V.E. Caldas2004-08-01Radiation Protection Dosimetry
Coloured glasses produced commercially by Cebracê, São Paulo, were analysed by the thermoluminescent (TL) method, to verify the possibility of their use as high-dose dosemeters or irradiation indicators in industrial areas, due to their easy handling and their low cost. The samples were exposed to different radiation…
Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesRadiation Effects and Dosimetry
Zh.P. Kopteva、V. V. Zanina、Kozlova Ia2004-08-01Surface Engineering
Research studies have shown that protective coatings of diverse chemical composition represent a powerful factor stimulating the bacterial activity of corrosion inducers. On the film and mastic coatings investigated in the present paper, bacterial communities are formed, which consist of bacteria of various ecological…
Corrosion Behavior and Inhibition
R. M. Langford、Doğan Özkaya、J. J. Sheridan 等 4 位作者2004-08-01Microscopy and Microanalysis
Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.
Electron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysisAdvanced Materials Characterization Techniques
Surajit Dhara、N. V. Madhusudana2004-08-01Europhysics Letters (EPL)
We report the first experimental high–electric-field phase diagram of a nematic liquid crystal with negative dielectric anisotropy. The variation of the paranematic-nematic transition temperature ( T PN ) is essentially linear with | E |, whereas the Landau-de Gennes theory predicts a quadratic variation. It is argued…
Liquid Crystal Research AdvancementsPlant Reproductive BiologyMolecular spectroscopy and chirality
Giovanna Iucci、G. Polzonetti、G. Infante 等 4 位作者2004-08-01Surface and Interface Analysis
Abstract The interaction between thin films of polyphenylacetylene (PPA) and bovine serum albumin (BSA) dissolved in phosphate buffer solution (PBS) was studied by x‐ray photoelectron spectroscopy (XPS) and Fourier‐transform infrared spectroscopy (FT‐IR) performed in reflectance mode. PPA is a semiconducting π‐conjuga…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Fernando C. Giacomelli、Cristiano Giacomelli、Almir Spinelli2004-08-01Journal of the Brazilian Chemical Society
The behavior of a Co-Cr-Mo biomaterial used as dental prosthesis was studied by electrochemical (Open Circuit Potential (OCP) and potentiodynamic polarization) and surface analysis techniques (Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS)) in artificial saliva, artificial saliva with modi…
Corrosion Behavior and InhibitionElectrodeposition and Electroless CoatingsElectrochemical Analysis and Applications
Fátima Menezes Bento、Gelsa Edith Englert、Christine C. Gaylarde 等 4 位作者2004-08-01Materials and Corrosion
Abstract Storage tanks containing microbially contaminated diesel oil are susceptible to corrosion. This process may be evaluated electrochemically in the laboratory using simulated storage systems containing diesel oil and an aqueous phase. The simulated aqueous phase must supply mineral nutrients for microbial growt…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability