G. Dai、F. Tassone、Andrea Li Bassi 等 6 位作者2004-04-01IEEE Photonics Technology Letters
We describe a highly stable glass family based on the combination of TeO/sub 2/ with heavy metal-oxides of Nb, Ti, W. We show that these glasses have large Raman gain, a broad Raman spectrum, and large negative dispersion. They are, thus, potentially useful in a variety of specialty fiber applications, such as discret…
Glass properties and applicationsPhotonic Crystal and Fiber OpticsSolid State Laser Technologies
Baochun Guo、Yan Cao、Demin Jia 等 4 位作者2004-04-01Macromolecular Materials and Engineering
Abstract Summary: Attempts were made to prepare thermoplastic elastomers (TPE) from scrap rubber powder (SRP) and linear low‐density polyethylene (LLDPE) as thermoplastic polymer matrix. The solid‐phase grafted copolymer of LLDPE (LLDPE‐g‐VM) and epoxidized natural rubber (ENR) were used as dual compatibilizers to imp…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Franco Cacialli、Paolo Samorı́、Carlos Silva2004-04-01Materials Today
The ability to manipulate the local molecular environment is crucial to access fundamentally new classes of organic functional materials with unprecedented properties and performance. Despite the progress of the last ten years in the area of organic semiconductors for electronics and optoelectronics, much remains to b…
Organic Electronics and PhotovoltaicsConducting polymers and applicationsLuminescence and Fluorescent Materials
Shigeo Maruyama、Yoichi Murakami、Yasushi Shibuta 等 5 位作者2004-04-01Journal of Nanoscience and Nanotechnology
Recent advances in high-purity and high-yield catalytic chemical vapor deposition (CVD) generation of single-walled carbon nanotubes (SWNTs) from alcohol are comprehensively presented and discussed on the basis of results obtained from both experimental and numerical investigations. We have uniquely adopted alcohol as…
Carbon Nanotubes in CompositesGraphene research and applicationsChemical and Physical Properties of Materials
Young Sun Mok、M. Dors、J. Mizerazcyk2004-04-01IEEE Transactions on Plasma Science
This study investigated nonthermal plasma process combined with monolithic V/sub 2/O/sub 5//TiO/sub 2/ catalyst for the removal of nitrogen oxides. The combination process was made in either one-stage (generation of plasma inside catalyst) or two-stage process (plasma reactor, followed by catalyst) in order to underst…
Catalytic Processes in Materials SciencePlasma Applications and DiagnosticsIndustrial Gas Emission Control
Esben Lorentzen、Bettina Siebers、Reinhard Hensel 等 4 位作者2004-04-01Biochemical Society Transactions
FBPA (fructose-1,6-bisphosphate aldolase) catalyses the reversible aldol condensation of glyceraldehyde 3-phosphate and dihydroxyacetone phosphate to form fructose 1,6-bisphosphate. Two classes of FBPA, which rely on different reaction mechanisms, have so far been discovered, class I mainly found in Eucarya and class…
Cancer, Hypoxia, and MetabolismEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism
Tao Hu、Heli Jantunen、A. Deleniv 等 5 位作者2004-04-01Journal of the American Ceramic Society
A low‐temperature cofired ferroelectric ceramic composition for electrically tunable radio frequency devices is introduced. A sintering temperature of 950°C for BaSrTiO 3 –MgO was obtained following the combined addition of B 2 O 3 and Li 2 CO 3 . The effects of these sintering aids on densification, microstructure, a…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisElectrical and Thermal Properties of Materials
Heinz Werner Höppel、J. May、Mathias Göken2004-04-01Advanced Engineering Materials
Bulk ultrafine‐grained (UFG) materials, produced by severe plastic deformation (SPD) have recently received considerable scientific attention. In this work the authors explore, whether the so‐called “paradox of ductility and strength” is also true for UFG Aluminium produced by an Accumulative Roll Bonding (ARB) proces…
Microstructure and mechanical propertiesMetal Forming Simulation TechniquesAdvanced Surface Polishing Techniques
Siripon Anantawaraskul、João B. P. Soares、Paula M. Wood‐Adams2004-04-01Macromolecular Chemistry and Physics
Abstract Summary: Crystallization analysis fractionation (Crystaf) is a technique for estimating the chemical composition distribution (CCD) of semi‐crystalline copolymers. Cocrystallization may happen during Crystaf analysis, affecting Crystaf profiles and leading to misinterpretation of the CCD. This study investiga…
Organometallic Complex Synthesis and CatalysisPolymer crystallization and propertiesMachine Learning in Materials Science
Chen‐Hsiung Hung、Shan-Ling Wang、Jia‐Ling Ko 等 6 位作者2004-04-01Organic Letters
[structure: see text] The demetalation of M(III)(HCTPPO)Br (M = Mn or Fe) afforded two hydroxylated N-confused porphyrinoids. CTPPOH retains the tautomer form of the N-confused porphyrin with a hydroxyl group substituted in the inner-core carbon. The further attack of OH(-) to the meso carbon afforded a dihydroxylated…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesMetal-Catalyzed Oxygenation Mechanisms
Hongping He、Ray L. Frost、Yunfei Xi 等 4 位作者2004-04-01Journal of Raman Spectroscopy
Abstract A Raman spectroscopic study on the organo‐montmorillonites prepared at different concentrations provided detailed observations about the ordering conformation of HDTMA + ions confined within the montmorillonite interlayer. The ordering conformation shows a strong dependence on the concentration of the confine…
Polymer Nanocomposites and PropertiesConducting polymers and applicationsClay minerals and soil interactions
Ren‐Shen Lee、Jen‐Ming Yang、Tz‐Feng Lin2004-04-01Journal of Polymer Science Part A Polymer Chemistry
Abstract Water‐soluble poly(ester‐carbonate) having pendent amino and carboxylic groups on the main‐chain carbon is reported for the first time. This article describes the melt ring‐opening/condensation reaction of trans ‐4‐hydroxy‐ N ‐benzyloxycarbonyl‐ L ‐proline ( N ‐CBz‐Hpr) with 5‐methyl‐5‐benzyloxycarbonyl‐1,3‐d…
biodegradable polymer synthesis and propertiesSynthetic Organic Chemistry MethodsCarbon dioxide utilization in catalysis
Swati V. Pol、Vilas G. Pol、Gulaim A. Seisenbaeva 等 5 位作者2004-04-01Chemistry of Materials
Spherical Co and ZrO 2 particles in the size range of 11−16 nm, exhibiting at room temperature metastable phases, fcc for cobalt and tetragonal for zirconia, were synthesized, by the reaction under autogenic pressure at elevated temperature (RAPET) technique. The tetragonal phase in ZrO 2 was obtained without doping t…
Advanced ceramic materials synthesisCatalytic Processes in Materials ScienceAdvanced materials and composites
Maarit Karppinen、Isao Asako、Teruki Motohashi 等 4 位作者2004-04-01Chemistry of Materials
Here we present results of accurate wet-chemical redox analyses revealing that the oxidation number of cobalt in the newly discovered CoO 2 -layer superconductor, Na x CoO 2 · y H 2 O ( x ≈ 0.36, y ≈ 1.3) is ∼3.46. This value is significantly lower than the one (∼3.64) expected on the basis of the value determined for…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
Hui Lu、Alexander P. Golovanov、Felicity Alcock 等 7 位作者2004-04-01Journal of Biological Chemistry
Tim9 and Tim10 are essential components of the "small Tim" family of proteins that facilitate insertion of polytopic proteins at the inner mitochondrial membrane. The small Tims are themselves imported from the cytosol and are organized in specific translocation assemblies in the intermembrane space. Their conformatio…
Protein Structure and DynamicsHeat shock proteins researchEnzyme Structure and Function
Sungjoon Lim、Christophe Caloz、T. Itoh2004-04-01IEEE Microwave and Wireless Components Letters
This letter presents a novel reflecto-directive system using a composite right/left-handed (CRLH) leaky-wave (LW) antenna and heterodyne mixing. The system receives a signal at a fixed frequency with a patch antenna and reflects it back toward any desired angle by tuning the LO frequency of a mixer. The performances o…
Metamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface TechnologiesFull-Duplex Wireless Communications
P. Hudhomme、Frédéric Dumur、N. Gautier 等 9 位作者2004-04-01Journal de Physique IV (Proceedings)
Unprecedented fused acceptor-donor-acceptor triad (Q-TTF-Q) incorporating the donor tetrathiafulvalene (TTF) and the acceptor p-benzoquinone (Q) has been synthesized. The solution UV-Vis spectrum displays a low energy absorption band which is attributed to an intramolecular charge transfer between both antagonistic un…
Magnetism in coordination complexesPhotochemistry and Electron Transfer StudiesOrganic and Molecular Conductors Research
Yasuhiko Hayashi、Daisuke Mori、Tetsuo Soga 等 4 位作者2004-04-01Physics of the Solid State
Nanostructure diamond (NSD) film with a hardness as high as 70 GPa and an average surface roughness of 10 nm has been synthesized by the two-step negative substrate bias method combined with post-growth Ar-H 2 plasma irradiation. The Ar-H 2 plasma irradiation has been confirmed to improve the uniformity of grain size…
Carbon Nanotubes in CompositesMetal and Thin Film MechanicsDiamond and Carbon-based Materials Research
Kenichi Uchiyama、M. Miyashita、Hiromi Taniguchi 等 9 位作者2004-04-01Journal de Physique IV (Proceedings)
Physical properties of an organic conductor, β'-(BEDT-TTF) 2 IBrCl, were characterized under ambient and extremely high pressures. Semiconducting behavior with activation energy, E a =0.11eV, and antiferromagnetic transition with T N =19.5K were uncovered in the present work. In addition, we have found that this salt…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesOrganic and Molecular Conductors Research
P. Piseri、E. Barborini、Mirko Marino 等 7 位作者2004-04-01The Journal of Physical Chemistry B
X-ray absorption measurements and large-scale molecular dynamics simulations are used to investigate the storage capacity of hydrogen in cluster-assembled carbon films. Experimental results show that nanostructured carbon exposed to H 2 at 0.12 MPa for 3 h at room temperature can store up to 1.5 wt % of hydrogen. Thes…
Graphene research and applicationsDiamond and Carbon-based Materials ResearchHydrogen Storage and Materials