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In vivo Overexpression of Tuftelin in the Enamel Organic Matrix

Wen Luo、Xin Wen、Hongjun Wang 等 6 位作者2004-01-01Cells Tissues Organs

The primary sequences of human and mouse tuftelin are 89% identical. Both proteins comprise 390 amino acids and produce an acidic protein with an isoelectric point of 5.7, and an unmodified molecular weight of 44 kD. Using fluorescent-tagged tuftelin and amelogenin plasmid constructs we saw little evidence that these…

Electrospun Nanofibers in Biomedical ApplicationsBone and Dental Protein StudiesTissue Engineering and Regenerative Medicine

An Improved Anode Micro Model of SOFC

Zetao Xia、S.-H. Gary Chan、K.A. Khor2004-01-01Electrochemical and Solid-State Letters

An anode micro model of a solid oxide fuel cell (SOFC) is presented, which was improved from that previously developed [ J. Electrochem. Soc. , 148 , A388 (2001)]. The model takes into account all possible polarizations, governing the complex interdependency among the transport phenomena, electrochemical reaction, and…

Advancements in Solid Oxide Fuel CellsFuel Cells and Related MaterialsElectronic and Structural Properties of Oxides

Polyoxometallates as effective photocatalysts in water purification from pesticides

E. Gkika、P Kormali、S. Antonaraki 等 6 位作者2004-01-01International Journal of Photoenergy

Polyoxometallates (POM), i.e., metal oxide clusters of mainly tungsten are effective homogeneous photocatalysts for the mineralization of organic pollutants. POM are, at least, as effective as the well studied TiO 2 . OH ⋅ radicals formed by the reaction of the photo‐excited polyoxometallates with H 2 O, appear to pla…

Polyoxometalates: Synthesis and Applications

The defect effect in the one-dimensional negative permeability material

Zhao Qian、Zhao Xiao-peng、Kang Lei 等 7 位作者2004-01-01Acta Physica Sinica

It was shown theoretically and experimentally that a metamaterial composed of periodically positioned split ring resonators (SRR) can lead to a negative effective permeability μeff close to its resonance frequency. In this paper, the nearest neighbor interactions between hexagon SRR were investigated in experiment. Th…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Urethane cross-linked poly(oxyethylene)/siliceous nanohybrids doped with Eu 3+ ions : Part 2. Ionic association

V. de Zea Bermudez、Denis Ostrovskii、S. Lavoryk 等 5 位作者2004-01-01Physical Chemistry Chemical Physics

Fourier transform mid-IR and Raman spectroscopies were employed to investigate the anionic local surrounding in sol–gel derived organic/inorganic materials–monourethanesils–incorporating europium triflate, Eu(CF3SO3)3. The hybrid framework of these xerogels contains short methyl end capped polyether segments grafted t…

Lanthanide and Transition Metal ComplexesAnalytical Chemistry and SensorsSolid-state spectroscopy and crystallography

Extraction of Hydrogen from Water Vapor by Hydrogen Pump Using Ceramic Protonic Conductor

Yoshinori Kawamura、Satoshi Konishi、Masataka Nishi2004-01-01Fusion Science & Technology

A blanket tritium recovery system that uses an electrochemical hydrogen pump with a protonic conductor membrane is proposed. One of the advantages of this system is the potential for processing the blanket sweep gas without fractionation of hydrogen isotopes and water vapor. In this work, hydrogen in a water molecule…

Advancements in Solid Oxide Fuel CellsGas Sensing Nanomaterials and SensorsAmmonia Synthesis and Nitrogen Reduction

Growth of aligned SWNT arrays from water-soluble molecular clusters for nanotube device fabrication

Shaoming Huang、Qiang Fu、Lei An 等 4 位作者2004-01-01Physical Chemistry Chemical Physics

A simple method to fabricate parallel and/or crossed networks of ultra-long single-walled carbon nanotube (SWNT) arrays based on carbon monoxide-chemical vapor deposition (CO-CVD) by a “fast-heating” growth process is reported. The catalysts which are water-soluble inorganic molecular clusters containing Fe and Mo ato…

Carbon Nanotubes in CompositesMechanical and Optical ResonatorsNanotechnology research and applications

Crystallization Behavior and Morphology of Star Polyesters with Poly(ϵ‐Caprolactone) Arms

E. Núñez、C. Ferrando、Eva Malmström 等 5 位作者2004-01-01Journal of Macromolecular Science Part B

Star polymers consisting of poly(ϵ‐caprolactone), (PCL), grafted onto third generation dendrimer, which had hyperbranched and dendron cores, were studied by polarized light microscopy together with reference linear PCL. The degree of polymerization of the PCL arms in the star polymers ranged between 14 and 81. The sta…

Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesDendrimers and Hyperbranched Polymers

Preparation of Ni Nanodot and Nanowire Arrays Using Porous Alumina on Silicon as a Template Without a Conductive Interlayer

M. T. Wu、Ing‐Chi Leu、Jung-Hsien Yen 等 4 位作者2004-01-01Electrochemical and Solid-State Letters

Recently, many nanostructures have been prepared successfully through electrodeposition of materials into anodic porous alumina coated with a conductive layer on the bottom. Here, the fabrication of Ni nanostructures using anodic porous alumina on Si as a template without a conductive interlayer is investigated. Morph…

Semiconductor materials and devicesNanowire Synthesis and ApplicationsAnodic Oxide Films and Nanostructures

Darmstadtium carbonyl and carbide resemble platinum carbonyl and carbide

Michael Patzschke、Pekka Pyykkö2004-01-01Chemical Communications

DsC and DsCO are calculated to be very similar to PtC and PtCO, suggesting that even the latest 6d elements resemble the corresponding 5d elements chemically.

Rare-earth and actinide compoundsBoron and Carbon Nanomaterials ResearchInorganic Chemistry and Materials

Finite Element Investigation of Equal Channel Angular Extrusion Process

Jeong-Ho Lee、Il‐Heon Son、Yong‐Taek Im2004-01-01MATERIALS TRANSACTIONS

In this study, the effect of material properties on deformation pattern and strain distribution of the commercially-available pure titanium (CP-Ti) specimen during an equal channel angular extrusion (ECAE) was investigated. Finite element analyses were carried out for two-dimensional plane strain condition at elevated…

Microstructure and mechanical propertiesMetallurgy and Material FormingTitanium Alloys Microstructure and Properties

Enhancement of α-oxygen formation and N 2 O decomposition on Fe/ZSM-5 catalysts by extraframework Al

Keqiang Sun、Haidong Zhang、Haian Xia 等 8 位作者2004-01-01Chemical Communications

The concentration of alpha-oxygen which can oxidize methane to methanol and benzene to phenol at RT, increases linearly with the amount of introduced extraframework Al on Fe/ZSM-5 catalysts prepared by solid-state exchange of FeCl3 and AlCl3 with H-ZSM-5.

Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions

Localization of Cu + sites and framework Al positions in high-silica zeolites: Combined experimental and theoretical study

Roman Bulánek、Pavel Čičmanec、Petr Knotek 等 5 位作者2004-01-01Physical Chemistry Chemical Physics

Three types of Cu+ sites are distinguished from the analysis of TPD spectra of CO in high-silica zeolites and the details about the structure and coordination of Cu+ at these sites are obtained from calculations.

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

Synthetic transition metal phyllosilicates and organic-inorganic related phases

Mireille Richard‐Plouet、S. Vilminot、M. Guillot2004-01-01New Journal of Chemistry

We present a brief overview of the first-row transition metal phyllosilicates and their organically functionalised analogues obtained under autogenous pressure conditions. Some structural features of phyllosilicates are first recalled and the magnetic properties of Co2+ and Ni2+ phyllosilicates are described. In the s…

Mesoporous Materials and CatalysisCrystal Structures and PropertiesLayered Double Hydroxides Synthesis and Applications

Synthesis, Characterization and Electrochemistry of the Novel Dawson‐Type Tungstophosphate [H4PW18O62]7− and First Transition Metal Ions Derivatives

Israël M. Mbomekallé、Bineta Keita、Yu Wei Lu 等 7 位作者2004-01-01European Journal of Inorganic Chemistry

Abstract Following the synthesis of pure [H 4 PW 18 O 62 ] 7− (PW 18 ), its derivatives monosubstituted with M (M = Mo VI , V IV , V V , Mn II , Fe III , Co II , Ni II Cu II and Zn II ) were obtained. All compounds were characterized by elemental analysis, IR, UV/visible and 31 P NMR spectroscopy. Their cyclic voltamm…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization

New Star-shaped Mesogens with Three Different Arms on a 1,3,5-Benzene Core

Matthias Lehmann、Raluca I. Gearba、Dimitri A. Ivanov 等 4 位作者2004-01-01Molecular Crystals and Liquid Crystals

The convergent synthesis of new symmetrical and non-symmetrical star-shaped mesogens based on a phloroglucinol core is presented. Molecules with three different arms were derived via esterification of various 4-benzoylbenzoic acid derivatives, substituted with polar groups and n alkoxy chains (n = 1–3), by using a com…

Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern FormationSynthesis and Properties of Aromatic Compounds

Martensitic Transformation and Magnetic Properties of Cu-Ga-Mn β Alloys

Katsunari Oikawa、N. Koeda、Yuji Sutou 等 6 位作者2004-01-01MATERIALS TRANSACTIONS

The martensitic transformation and magnetic properties of Cu-Ga-Mn β alloys were investigated. The alloys in the composition range Cu-21 at%Ga-(13—15)at%Mn were found to exhibit a thermoelastic martensitic transformation from an L21 parent to a 2H martensite in the ferromagnetic state. This martensitic transformation…

Shape Memory Alloy TransformationsMagnetic Properties and ApplicationsMagnetic Properties of Alloys

Structure–activity studies of ferroelectric and antiferroelectric imine ligands and their palladium( ii ) complexes. An antiferroelectric metallomesogen

Delia López de Murillas、Rafael Piñol、M. Blanca Ros 等 6 位作者2004-01-01Journal of Materials Chemistry

The synthesis and characterization of the mesomorphic and dielectric properties of new imine-based liquid crystalline compounds that exhibit tilted SmC* phases is reported. The presence of an imino linkage within the mesogenic nucleus of these compounds is significant due to the ability of benzaldimines to coordinate…

Liquid Crystal Research AdvancementsSynthesis and Properties of Aromatic CompoundsMolecular spectroscopy and chirality

Viable route for the synthesis of the anhydrous Co(hfac) 2 adduct with monoglyme: a useful precursor for thin films of CoO

Antonino Gulino、Paolo Dapporto、Patrizia Rossi 等 5 位作者2004-01-01Journal of Materials Chemistry

The [Co(hfac)2·CH3OCH2CH2OCH3] adduct was synthesised and investigated by X-ray crystal structure, mass spectra, TG-DTG thermal measurements and infrared transmittance spectroscopy. X-Ray single crystal data provide evidence of a slightly distorted octahedral cobalt cation, coordinated with four oxygen atoms of two hf…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

'Green' Composites Using Modified Soy Protein Concentrate Resin and Flax Fabrics and Yarns

Shitij Chabba、Anil N. Netravali2004-01-01JSME International Journal Series A

Fully biodegradable, environment-friendly ‘green' composites were fabricated using glutaraldehyde (GA) modified (MSPC-1) and GA and poly(vinyl alcohol) modified (MSPC-2) soy protein concentrate (SPC) resins. The SPC modifications resulted in better thermal and mechanical properties and lower moisture absorption due to…

Natural Fiber Reinforced CompositesAdditive Manufacturing and 3D Printing TechnologiesMechanical Engineering and Vibrations Research