Daniel Mark Lyons、Linda P. Harman、Michael A. Morris2004-01-01Journal of Materials Chemistry
In this study, data are provided that detail the first preparation of high surface area and structurally ordered mesoporous lanthanide oxides by a neutral surfactant supramolecular templating route. For the first time, retention of mesoporosity in lanthanide oxides (other than those of cerium) after surfactant removal…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
Hak‐Rin Kim、Yong Wook Lee、Sungjin Kim 等 7 位作者2004-01-01Ferroelectrics
We report on a rotatable waveplate using a vertically aligned deformed-helix ferroelectric liquid crystal (DHFLC) in the presence of the in-plane rotating electric field. In such device configuration, the helix of the FLC is continuously deformed and thus the effective birefringence increases as the in-plane electric…
Photonic and Optical DevicesLiquid Crystal Research AdvancementsPlant Reproductive Biology
Natalie Artzi、Bhanu Bhusan Khatua、R. Tchoudakov 等 7 位作者2004-01-01Journal of Macromolecular Science Part B
Nylon‐6 (Ny‐6) and ethylene‐vinyl alcohol copolymer (EVOH) binary blends were prepared in various compositions via dynamic melt blending. In addition, 50/50 blends of EVOH with nylon‐6/6.9 (Ny6/6.9) and nylon‐11 (Ny‐11) were prepared to study the effect of nylon type on the structuring process under melt mixing. The p…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Peng-Yuan Lee、Masamitsu Imai、Toyohiko Yano2004-01-01Journal of the Ceramic Society of Japan
High-temperature strength, fracture behavior and microstructure were observed for monazite-coated alumina fiber-reinforced alumina matrix composites hot-pressed at 1200-1300°C. The composites with 27-41 vol% alumina fiber showed no significant change in strength at 25-1100°C. However, the strength of the composites de…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesRecycling and utilization of industrial and municipal waste in materials production
Xiaowei Luo、Lihong Zhang、Suyuan Yu2004-01-01International Journal of Nuclear Energy Science and Technology
The influence of normal load on wear performance of graphite used in a 10 MW high temperature gas-cooled reactor was investigated. The experiments included the wear between graphite and graphite specimens, and the wear between graphite and stainless steel specimens. The worn surfaces and abrasive particles were analys…
Hydrogen embrittlement and corrosion behaviors in metalsMechanical stress and fatigue analysisGraphite, nuclear technology, radiation studies
A. Passerone、Maria Luigia Muolo2004-01-01International Journal of Materials and Product Technology
Metallic alloys and ceramic materials are employed in aggressive and hostile environments, ranging from aerospace to energy production, from offshore to biological applications. Today, production requires materials able to survive for a long time at high temperatures, in highly aggressive atmospheres, both from the ch…
Advanced ceramic materials synthesisHigh-Temperature Coating BehaviorsAdditive Manufacturing and 3D Printing Technologies
S. Lefrant、J.P. Buisson、J. Schreiber 等 6 位作者2004-01-01Molecular Crystals and Liquid Crystals
In this paper, we present Raman studies of different carbon nanotubes systems like single-walled nanotubes(SWNTs), multi-walled nanotubes(MWNTs)or composites prepared with different conjugated or non-conjugated polymers. We have focused our studies on the interactions that can take place in these systems and in genera…
Carbon Nanotubes in CompositesNanotechnology research and applications
Takao Hanawa、Yuko Kohayama、Sachiko Hiromoto 等 4 位作者2004-01-01MATERIALS TRANSACTIONS
The repassivation current of titanium was measured by a newly designed electrochemical cell that can bare a new metal surface momentarily for the determination of the effects of biological factors such as dissolved oxygen, inorganic ions, amino acids, and proteins, on time transient of repassivation current. For this…
Orthopaedic implants and arthroplastyHydrogen embrittlement and corrosion behaviors in metalsTitanium Alloys Microstructure and Properties
Chelsey D. Baertsch、Martin A. Schmidt、Klavs F. Jensen2004-01-01Chemical Communications
The metal dispersion of a Pt-Al2O3 catalyst was measured reproducibly using pulse CO chemisorption with 4 mg of sample in a silicon microfabricated packed-bed reactor, demonstrating the applicability of micoreactors for high-throughput catalyst characterization with quantitative comparison.
Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsElectronic and Structural Properties of Oxides
B. Jayakar、B. Rajkapoor、B. Suresh2004-01-01Journal of Herbal Pharmacotherapy
The hypoglycemic effect of aqueous and alcoholic extracts of whole plant Caralluma attenuata was investigated in both normal and alloxan induced diabetic rats. The blood glucose levels were measured at 0,1,2 and 3 h after the treatment. The aqueous and alcoholic extracts of C. attenuata (100 mg/kg) reduced the blood g…
Natural Antidiabetic Agents StudiesPharmacological Effects of Natural CompoundsPhytochemistry and Bioactive Compounds
V. Padmavathi、B. Jagan Mohan Reddy、M. Rajagopala Sarma 等 4 位作者2004-01-01Journal of Chemical Research
3,4-Disubstituted pyrroles are prepared by cyclocondensation of aryl styryl sulfones and benzyl styryl sulfones with tosyl methyl isocyanide. Phenyl vinyl sulfone under similar conditions forms 3-benzenesulfonylpyrrole and/or 2-(2-benzenesulfonylethyl)-4-benzenesulfonylpyrrole.
Porphyrin and Phthalocyanine ChemistryCyclopropane Reaction MechanismsSynthesis and Characterization of Pyrroles
H. Tichá、J. Schwartz、L. Tichý 等 4 位作者2004-01-01Journal of Optoelectronics and Advanced Materials
Phosphate glasses of composition x PbO - 10 ZnO - (90-x) P 2 O 5 , 30 ≤ x(mol. %) ≤ 55 (series A); 50 PbO -x ZnO - (50-x) P 2 O s , 0 ≤ x(mol %) ≤ 20 (series B); and x PbO - (60 - x) ZnO - 40 P 2 O 5 , 0 ≤ x(mol %) ≤ 60 (seriesC), were investigated. Experimental values of the refractive index (n) [1.59 ≤ n ≤ 1.87] wer…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotorefractive and Nonlinear Optics
Jose Mar2004-01-01OpenAlex
III-V solar cell technology is reviewed. Difierent fabrication processes for III-V semiconductor materials, cell designs and applications are presented. The two main growth techniques are molecular organic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE), with growth control to a monolayer precission…
Chemical and Physical Properties of MaterialsAdvanced Materials and Semiconductor TechnologiesAdvanced Energy Technologies and Civil Engineering Innovations
Kanji Kubo、Kazuki Tsuji、Akira Mori 等 4 位作者2004-01-01Journal of Oleo Science
New liquid crystals and organogelators with a cholesteryl benzoate skeleton were prepared. Cholesteryl 4-alkoxy- and 3,4-dialkoxybenzoates had enantiotropic cholesteric and smectic A phases, while 3,5-dialkoxy- and 3,4,5-trialkoxybenzoate derivatives were not mesomorphic. Furthermore cholesteryl 4-alkoxy- and 3,4-dial…
Lipid Membrane Structure and BehaviorSurfactants and Colloidal SystemsSupramolecular Self-Assembly in Materials
RONI ILAN、EDO LIBERTY、SHAHAR EVEN-DAR MANDEL 等 4 位作者2004-01-01Ferroelectrics
We study the Schrödinger equation for an off-diagonal tight-binding hamiltonian, as well as the equations of motion for out-of-plane vibrations on the separable square Fibonacci quasicrystal. We discuss the nature of the spectra and wave functions of the solutions.
Quantum Mechanics and Non-Hermitian PhysicsQuasicrystal Structures and PropertiesAdvanced Mathematical Theories and Applications
Delphine Daniel‐David、Isabelle Pezron、Danièle Clausse 等 6 位作者2004-01-01Physical Chemistry Chemical Physics
Crude oil/water emulsion stability is one of the major obstacles to efficient off-shore separation of undesired aqueous phase. Chemical demulsifiers based on polysiloxanes have been successfully tested as accelerators of phase separation but the mechanism of coalescence is not fully understood. Better understanding of…
Surface Modification and SuperhydrophobicityEnhanced Oil Recovery TechniquesPolymer Surface Interaction Studies
M. Lavrentovich、T. Sergan、Jack Kelly2004-01-01Molecular Crystals and Liquid Crystals
An aqueous solution of disodium cromoglycate (cromolyn) is known to form the chromonic N phase (i.e. a nematic lyotropic columnar phase) at room temperature and concentration range 13–17%, and the corresponding N∗ twisted nematic phase if chiral dopants are added. We have produced lyotropic liquid crystal films and ce…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsMolecular spectroscopy and chirality
V. A. Belyakov、В. А. Бурдов、Д. М. Гапонова 等 6 位作者2004-01-01Physics of the Solid State
The temperature dependence of the photoluminescence (PL) spectrum of silicon quantum dots (QDs) is studied both theoretically and experimentally, and the time of the corresponding electron-hole radiative recombination is calculated. The dependence of the recombination time on the QD size is discussed. The experiment s…
Thin-Film Transistor TechnologiesSilicon Nanostructures and PhotoluminescenceNanowire Synthesis and Applications
Trần Vĩnh Diệu、Nguyen Thanh Liem、Tran Thi 等 4 位作者2004-01-01JSME International Journal Series A
Glass fiber/bamboo fiber hybrid BMC laminates were fabricated by compression molding, and their physico-mechanical properties were investigated. To improve their properties, many factors (constituent's ratio, process conditions, bamboo fiber content) were varied. The composite material reinforced with 25wt% hybrid fib…
Natural Fiber Reinforced CompositesInnovations in Concrete and Construction MaterialsMechanical Engineering and Vibrations Research
Mahmoud Hossny MAKLED、T. Matsui、Hiroshi Tsuda 等 6 位作者2004-01-01Journal of the Ceramic Society of Japan
Six kinds of powder samples with a different particle size and its distribution have been prepared from coprecipitated precursors by light grinding followed by sieving, and calcined in air to form the barium ferrite (BaFe12O19) phase. Correlation between the particle morphology and Fe/Ba molar ratio or magnetic proper…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Synthesis of Ferrites