Véronique Hannaert、Henner Brinkmann、Ulrich Nowitzki 等 10 位作者2000-07-01Molecular Biology and Evolution
Genomic or cDNA clones for the glycolytic enzyme enolase were isolated from the amitochondriate pelobiont Mastigamoeba balamuthi, from the kinetoplastid Trypanosoma brucei, and from the euglenid Euglena gracilis. Clones for the cytosolic enzyme were found in all three organisms, whereas Euglena was found to also expre…
Enzyme Structure and FunctionEnzyme Production and CharacterizationPeptidase Inhibition and Analysis
Jihong Tong、Mitsutoshi Nakajima、Hiroshi Nabetani 等 4 位作者2000-07-01Journal of Surfactants and Detergents
Abstract Super‐monodispersed oil‐in‐water (O/W) microspheres (MS) were produced using a microchannel (MC) emulsification technique. To investigate the effect of the surfactant on the behavior of the O/W‐MS formation, the MS size and its distribution, various surfactants were used for the MC emulsification process. An…
Surface Modification and SuperhydrophobicityPickering emulsions and particle stabilizationFluid Dynamics and Thin Films
Gülay Bayramoğlu、Tülay Alemdaroğlu、S. P. Kedici 等 4 位作者2000-07-01Journal of Oral Rehabilitation
The aim of this study was to determine the effects of the oral environment's pH on the corrosion of dental metals and alloys that have different compositions, using electrochemical methods. The corrosion rates and the cathodic Tafel slopes were obtained from the current-potential curves. The effect of pH on the corros…
Dental materials and restorationsCorrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metals
R.G. Bergman、Jan Swenson、L. Börjesson 等 4 位作者2000-07-01The Journal of Chemical Physics
We report results of dielectric spectroscopy on water confined in a two-dimensional layer-structured Na-vermiculite clay. Several relaxation processes of different origin can be discerned in the spectra. A strong dielectric loss peak is observed in the clay with two layers of water molecules between the rigid clay pla…
Material Dynamics and PropertiesSoil and Unsaturated FlowClay minerals and soil interactions
Yoshiaki Kanamori、Hisao Kikuta、Kazuhiro Hane2000-07-01Japanese Journal of Applied Physics
We fabricated a two-dimensional subwavelength-structured (SWS) surface on a glass substrate. The SWS surface was patterned by electron-beam lithography and etched by an SF 6 fast atom beam. The SWS surface consisted of tapered gratings with a 150 nm period and a 150 nm deep groove. The reflectivity at wavelengths from…
Photonic and Optical DevicesOptical Coatings and GratingsNear-Field Optical Microscopy
Young Chul Choi、Dong Jae Bae、Young Hee Lee 等 8 位作者2000-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Carbon nanotubes have been grown on Ni-coated Si substrates by microwave plasma-enhanced chemical vapor deposition with a mixture of methane and hydrogen gases at temperatures ranging from 520 to 700 °C. The density and the length of the carbon nanotubes increased with increasing growth temperature. At a growth temper…
Carbon Nanotubes in CompositesGraphene research and applicationsDiamond and Carbon-based Materials Research
T. Saitoh、D. S. Dessau、Yutaka Moritomo 等 6 位作者2000-07-01Physical review. B, Condensed matter
Direct electronic structure measurements of a variety of colossal magnetoresistive (CMR) oxides show the presence of a pseudogap at the Fermi energy ${E}_{F}$ which drastically suppresses the electron spectral function at ${E}_{F}.$ The pseudogap is a strong function of the layer number of the samples (sample dimensio…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Guangming Chen、Suhuai Liu、Shufan Zhang 等 4 位作者2000-07-01Macromolecular Rapid Communications
A self-assembly phenomenon in an extruded polystyrene/clay nanocomposite sample is observed during a temperature increase process. Wide-angle X-ray diffraction (WAXD), transmission electron microscopy (TEM), and infrared dichroism techniques have been employed to investigate the self-assembly phenomenon. The results s…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer composites and self-healing
Jacek Dudowicz、Karl F. Freed、Jack F. Douglas2000-07-01The Journal of Chemical Physics
Equilibrium polymerization is studied here as a prototype for clustering transitions that commonly occur in systems of interacting particles at equilibrium. These transitions are often difficult to locate because of transition “rounding” associated with a limited extent of cluster growth, competing association or diss…
Polymer crystallization and propertiesPhase Equilibria and ThermodynamicsMaterial Dynamics and Properties
Silvania Lanfredi、J.F. Carvalho、Antônio Carlos Hernandes2000-07-01Journal of Applied Physics
The frequency dependence of the electrical properties of the Bi12TiO20 single crystal was investigated by impedance spectroscopy. The data were presented in the Nyquist diagram form, from which electrical resistivity was determined. Values ranged from 1.93×105 and 1.07×103 Ω cm in the temperature range of 400–700 °C.…
Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsPhotorefractive and Nonlinear Optics
Joo‐Sun Kim、Anatoly Rosenflanz、I‐Wei Chen2000-07-01Journal of the American Ceramic Society
Single‐phase α‐SiAlON with elongated grains is obtained from α‐Si 3 N 4 powder for a broad range of compositions of practical interest. Following the concept of nucleation and growth, two‐step firing is used for microstructure control. This method takes advantage of the slow transformation reaction from α‐Si 3 N 4 to…
Ferroelectric and Piezoelectric MaterialsAdvanced ceramic materials synthesisMicrowave Dielectric Ceramics Synthesis
Yoshiaki Kobayashi、Naoki Fujiwara、Satoru Murata 等 5 位作者2000-07-01Physical review. B, Condensed matter
The ${}^{59}\mathrm{C}\mathrm{o}\ensuremath{-}\mathrm{N}\mathrm{M}\mathrm{R}$ on single crystals of ${\mathrm{LaCoO}}_{3}$ has been studied in order to investigate the spin-state transition through the nuclear-spin relaxation in this compound. Below $T\ensuremath{\sim}35\mathrm{K},$ the spin-lattice and spin-spin rela…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
Julio Fernández‐Cestau、Juan J. Alonso2000-07-01Physical review. B, Condensed matter
We study Ising systems of spins with dipolar interactions. We find a simple approximate relation for the interaction energy between pairs of parallel lattice columns of spins running along the Ising spin direction. This relation provides insight into the relation between lattice geometry and the nature of the ordered…
Theoretical and Computational PhysicsMagnetism in coordination complexesQuantum many-body systems
Eng Mong Lim、S. Dusko Ehrlich、Emmanuelle Maguin2000-07-01Electrophoresis
Lactobacillus delbrueckii subsp. bulgaricus (L. bulgaricus) is a homofermentative bacterium that produces lactic acid during growth. We adapted the two-dimensional electrophoresis (2-DE) technique to study the response of this bacterium to acidity. De novo protein synthesis was monitored by [35S]methionine labeling of…
Protein Structure and DynamicsProbiotics and Fermented FoodsEnzyme Structure and Function
A. G. Lebed、K. Machida、Makiko Ozaki2000-07-01Physical review. B, Condensed matter
We argue that the ${(\mathrm{TMTSF})}_{2}{\mathrm{PF}}_{6}$ compound under pressure is likely a triplet superconductor with a vector order parameter $\mathbf{d}(\mathbf{k})\ensuremath{\equiv}{(d}_{a}(\mathbf{k})\ensuremath{\ne}0, {d}_{c}(\mathbf{k})=?, {d}_{{b}^{\ensuremath{'}}}(\mathbf{k})=0); |{d}_{a}(\mathbf{k})|&g…
Physics of Superconductivity and MagnetismMagnetism in coordination complexesOrganic and Molecular Conductors Research
V.Yu. Kramarenko、Tiberio A. Ezquerra、Igors Šics 等 5 位作者2000-07-01The Journal of Chemical Physics
In an attempt to study the specific influence of cross-linking on the α relaxation in polymer networks, a series of model heterocyclic polymer networks (HPN) with well-defined cross-link densities and constant concentration of dipolar units were studied. Model HPN systems were prepared by simultaneous trimerization of…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesPolymer Nanocomposites and Properties
Philippe Leclère、A. Calderone、Dirk Marsitzky 等 8 位作者2000-07-01Advanced Materials
Self-organized semiconducting structures can be generated by including conjugated chains in block copolymers, it is reported here. Thin films of rod–coil copolymers containing a conjugated and a non-conjugated segment show nanoribbons of the conjugated material (see Figure), indicating that this approach may open the…
Advanced Polymer Synthesis and CharacterizationSupramolecular Self-Assembly in MaterialsBlock Copolymer Self-Assembly
Tatsuya Shirakami、Michihiro Mitsukawa、Takahito Imai 等 4 位作者2000-07-01Japanese Journal of Applied Physics
We synthesized Pb(Ni 1/3 Nb 2/3 )O 3 (PNN) and performed selected-area electron diffraction (SAD) in order to investigate the structure of the B-site array. In addition to the reflection from the basic cell, the SAD pattern of sintered PNN corresponds to the reciprocal plane normal to the [011] zone axis and showed di…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Katsumi Yamazaki2000-07-01IEEE Transactions on Magnetics
A novel method of transient eddy current analysis for moving conductors is proposed. In the analysis, different moving coordinate systems are used at each finite element in the conductor, respectively. The velocities of the coordinate systems are determined automatically at each time-step for the purpose of reducing t…
Magnetic Properties and ApplicationsSuperconducting Materials and ApplicationsNon-Destructive Testing Techniques
R. A. Hatt、Wenwu Cao2000-07-01Physical review. B, Condensed matter
The only Landau-type model for antiferroelectric phase transitions was proposed by Kittel, in which two interpenetrating sublattices with opposite polarizations of equal amplitude were assumed. The theory, however, did not include any mechanism to specify the relative spatial positions of the two sublattices, and ther…
Photorefractive and Nonlinear OpticsAcoustic Wave Resonator TechnologiesSolid-state spectroscopy and crystallography