Yasuyoshi Sayama、Makoto Handa、Masahiro Mikuriya 等 5 位作者2003-04-01Bulletin of the Chemical Society of Japan
Abstract The reaction of [Ru2II,III(O2CCMe3)4]BF4 with nitronyl nitroxide radicals (2,4,4,5,5-pentamethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-N-oxide (nitme) and 2-ethyl-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-N-oxide (nitet)) in CH2Cl2/hexane gave dimer and chain complexes [Ru2(O2CCMe3)4(L)2]BF4 and [{Ru2(O…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
B. Velde、Bruno Goffé、A. Hoellard2003-04-01Clays and Clay Minerals
Abstract Clay minerals appear to change significantly under the influence of pasture development on poldered sediments in the Baie d'Authie area (Somme, France). Cores 40–90 cm deep from recent salt marsh sediments and poldered sediments developing grass pastures since 1737, 1575 and 1158 indicate that the natural min…
Clay minerals and soil interactionsIron oxide chemistry and applicationsTherapeutic Uses of Natural Elements
Daniel Slomovitz2003-04-01IEEE Transactions on Instrumentation and Measurement
An electronic error compensator is proposed for instrument current transformers. It is specially intended for transformers used in high voltage networks at power frequency. In these transformers, the magnetizing current is the main cause of errors. The proposed system compensates this current, reducing the ratio and p…
Magnetic Properties and ApplicationsNon-Destructive Testing TechniquesAdvanced Electrical Measurement Techniques
Hansong Cheng、Guido P. Pez、Alan C. Cooper2003-04-01Nano Letters
We report surprising findings of spontaneous cross-linking of small-diameter zigzag single-walled carbon nanotubes, with no applied external pressure, using ab initio density functional theory. Sunstantial differences in the cross-linking reactivity of zigzag and armchair single-walled carbon nanotubes are revealed by…
Advanced Chemical Physics StudiesCarbon Nanotubes in CompositesQuantum, superfluid, helium dynamics
Jushik Yun、А. I. Isayev2003-04-01Polymer Engineering and Science
Abstract The recycling of vulcanizates based on EPDM roofing membrane rubber using a new ultrasonic devulcanization reactor with a grooved barrel was carried out. This reactor provided continuous devulcanization at an output as high as 2.52 g/s. Die pressure and ultrasonic power consumption were measured as a function…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesSilicone and Siloxane Chemistry
Donald A. MacLaren、B. Holst、D. Riley 等 4 位作者2003-04-01Surface Review and Letters
We describe recent developments in the fabrication of an atom-optical mirror for focusing thermal helium atoms. A bent silicon crystal is, in principle, capable of high intensity, low aberration helium reflection; manipulation of the mirror's macrostructure minimizes optical aberrations in the device whilst chemical c…
Force Microscopy Techniques and ApplicationsElectronic and Structural Properties of OxidesSurface and Thin Film Phenomena
Věra Hamplová、Alexej Bubnov、M. Kas ̆par 等 5 位作者2003-04-01Liquid Crystals
Two new series of ferroelectric liquid crystals with a keto group attached to the molecular core and a lactate unit as a chiral centre were synthesized and studied. All the compounds exhibit the paraelectric SmA phase and the ferroelectric SmC* phase over very wide temperature ranges and down to room temperature. The…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMolecular spectroscopy and chirality
Jinhua Wang、Gomathi Ramaswamy2003-04-01Textile Research Journal
Kenaf is an important bast fiber because it is biodegradable and has other ecofriendly characteristics. In this study, chelators, including ethylenediamine tetra acetic acid (EDTA) and citric acid (CA); surfactants, including phosphate ester (Silvatol), alkylaxylsulfonates (Conco), cationic quaternary amine (Atlas), a…
Natural Fiber Reinforced CompositesPlant Surface Properties and TreatmentsMaterial Properties and Processing
Philippe Dúbois、Michaël Alexandre、Robert Jérôme2003-04-01Macromolecular Symposia
Abstract Polyolefinic microcomposites and layered silicate nanocomposites were prepared by the in‐situ polymerization of ethylene (and α‐olefin) via the so‐called polymerization‐filling technique. Various fillers with either basic, acidic, metallic or carbonaceous surface, as well as non‐modified clays such as montmor…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesSilicone and Siloxane Chemistry
H Yardimci、R. L Leheny2003-04-01Europhysics Letters (EPL)
The dielectric susceptibility of the molecular liquid sorbitol below its calorimetric glass transition displays memory strikingly similar to that of a variety of glassy materials. During a temporary stop in cooling, the susceptibility changes with time, and upon reheating the susceptibility retraces these changes. To…
Material Dynamics and PropertiesAdvanced Physical and Chemical Molecular InteractionsChemical and Physical Properties of Materials
R. Y. Gu、Z. D. Wang、C. S. Ting2003-04-01Physical review. B, Condensed matter
The insulator to metal transition (IMT) induced by the application of an electric field in doped manganites is investigated theoretically. Starting from the double-exchange mechanism with the long-range Coulomb interaction included, we find that the electric field may suppress the charge ordering and drive the system…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides
An-Ping Lin、Lee McAlister-Henn2003-04-01Journal of Biological Chemistry
Yeast NAD(+)-specific isocitrate dehydrogenase (IDH) is an allosterically regulated octameric enzyme composed of two types of homologous subunits designated IDH1 and IDH2. Based on sequence comparisons and structural models, both subunits are predicted to have adenine nucleotide binding sites. This was tested by alani…
Microbial Metabolic Engineering and BioproductionEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism
Xuanjun Zhang、Yi Xie、Qingrui Zhao 等 4 位作者2003-04-01New Journal of Chemistry
A 1D inorganic coordination polymer template route was firstly developed to synthesize metal sulfide aligned-nanowire bundles. Based on this strategy, CdS and HgS aligned-nanowire bundles with high yields were successfully prepared in a water system at room temperature using KCd(NCS)3 as a soft template. The results r…
2D Materials and ApplicationsQuantum Dots Synthesis And PropertiesConducting polymers and applications
Tali Sehayek、Alexander Vaskevich、Israel Rubinstein2003-04-01Journal of the American Chemical Society
A novel scheme is presented for the synthesis of graded materials by electrodeposition in porous insulating templates. Lateral control of copper electrodeposition in nanoporous alumina membranes is achieved by application of a lateral potential gradient on a thin Au film evaporated on the membrane, used as the cathode…
Electrocatalysts for Energy ConversionAnodic Oxide Films and NanostructuresNanoporous metals and alloys
E. Cano、Paz Pinilla、J. L. Polo 等 4 位作者2003-04-01Materials and Corrosion
Abstract Fast green (FG), fuchsin basic (FB) and fuchsin acid (FA) were studied as copper corrosion inhibitors in citric acid solution. Five citric acid concentrations were tested from 0.001 to 1.0 M. Twelve FG, FB and FA concentrations were studied from 1 × 10 −5 to 1 × 10 −1 M, at four temperatures from 298 to 328 K…
Corrosion Behavior and InhibitionConcrete Corrosion and Durability
Pascal M. Dohmen、Shigeyuki Ozaki、Robert Nitsch 等 6 位作者2003-04-01PubMed
BACKGROUND: The tissue-engineered (TE) heart valve was developed to improve the durability of tissue heart valves. The aim of this study was to evaluate morphological and histological changes in a TE heart valve consisting of decellularized porcine matrices seeded with viable autologous vascular endothelial cells (AVE…
Cardiac Valve Diseases and TreatmentsElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine
Shuqiang Niu、Xue‐Bin Wang、Jeffrey A. Nichols 等 5 位作者2003-04-01The Journal of Physical Chemistry A
Iron−sulfur proteins are an important class of electron carriers in a wide variety of biological reactions. Determining the intrinsic contribution of the metal site to the redox potential is crucial in understanding how the protein environment influences the overall redox properties of the Fe−S proteins. Here we combi…
Advanced Chemical Physics StudiesPorphyrin and Phthalocyanine ChemistryVarious Chemistry Research Topics
H. Niehus、Ralf‐Peter Blum、Dirk Ahlbehrendt2003-04-01Surface Review and Letters
The epitaxial growth of vanadium oxide (V 2 O 3 ) has been investigated by scanning tunneling microscopy (STM), low energy ion back-scattering (ISS) and low energy electron diffraction (LEED). Direct evaporation of vanadium onto metal surfaces (Cu, Au or Cu 3 Au) gives rise to massive surface alloying. The attempt to…
Transition Metal Oxide NanomaterialsElectronic and Structural Properties of OxidesChemical and Physical Properties of Materials
N.L. Allen、D. Faircloth2003-04-01IEEE Transactions on Dielectrics and Electrical Insulation
A description is given of some properties of the corona discharge when propagating over a cylindrical polytetrafluoroethylene insulator surface placed along the axis of a rod-plane electrode arrangement. A scanning electrostatic probe has been used to measure the density of charge deposited on the surface; it is shown…
High voltage insulation and dielectric phenomenaPower Line Communications and NoiseThermal Analysis in Power Transmission
Sylvain Boucard、J. Duchet、Jean‐François Gérard 等 5 位作者2003-04-01Macromolecular Symposia
Abstract Polypropylene compounds containing organophilic layered silicates were prepared by means of melt extrusion at 180°C. We have studied the effect of the coupling agent on morphology development and mechanical properties. We are convinced of the importance of both the chemistry and the process conditions to elab…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesSilicone and Siloxane Chemistry