Klaus Schröter、R. Unger、S. Reissig 等 7 位作者1998-11-14Macromolecules
Stability of the dielectric parameters in the αβ splitting region against methodical variations is demonstrated. The Williams product ansatz for correlation functions and an additive ansatz for dielectric functions are compared for poly(ethyl methacrylate). Both evaluation methods give a diminishing α intensity with i…
Polymer Nanocomposites and PropertiesMaterial Dynamics and PropertiesThermodynamic properties of mixtures
Charlotte M. Zaremba、Daniel E. Morse、Stephen Mann 等 5 位作者1998-11-14Chemistry of Materials
From studies of geological and coral skeleton aragonite, it was previously proposed that aragonite converts hydrothermally to hydroxyapatite (HA) in phosphate solution by a solid-state topotactic ion-exchange reaction in which the HA retains the orientation of the original aragonite. The present investigation of this…
Bone Tissue Engineering MaterialsCalcium Carbonate Crystallization and InhibitionPaleontology and Stratigraphy of Fossils
J. C. Chu、C. H. Mak1998-11-14arXiv
Constant temperature molecular dynamics simulations were used to study solutions of flexible polyelectrolyte chains at nonzero concentrations with explicit counterions and unscreened coulombic interactions. Counterion condensation, measured via the self-diffusion coefficient of the counterions, is found to increase wi…
Materials ScienceChemical Physicscond-mat.stat-mech
P. N. Rao、E. A. Schiff、L. Tsybeskov 等 4 位作者1998-11-14arXiv
We report photocarrier time-of-flight measurements in diode structures made of highly porous crystalline silicon. The corresponding electron and hole drift mobilities are very small compared to homogeneous crystalline silicon. They show two additional signatures of semiclassical transport that are directly limited by…
Soft Condensed MatterMaterials Science
Karsten Riwotzki、Markus Haase1998-11-14OpenAlex
Colloidal solutions and redispersible powders of nanocrystalline, lanthanide-doped YVO 4 have been prepared via a hydrothermal method at 200 °C. High-resolution transmission electron micrographs of size-selected samples show highly crystalline particles ranging in size from about 10 to 30 nm. The particles exhibit the…
Glass properties and applicationsLuminescence Properties of Advanced MaterialsQuantum Dots Synthesis And Properties
Michael Baake、Robert V Moody1998-11-13Journal of Physics A Mathematical and General
After a brief historical survey, this paper introduces the notion of entropic model sets (cut and project sets), and, more generally, the notion of diffractive point sets with entropy. Such sets may be thought of as generalizations of lattice gases. We show that taking the site occupation of a model set stochastically…
Quasicrystal Structures and PropertiesMathematical Approximation and IntegrationAnalytic and geometric function theory
Alireza Badiei、Sylvie Cantournet、Michel Morin 等 4 位作者1998-11-13Langmuir
Anions present in the synthesis gel (X = F -, Cl -, Br -, NO 3 -, and SO 4 2 - ) partly remain in the channels of mesoporous templated silicas prepared in basic media. Their lyotropic character and their concentration control the silanolate group (⋮SiO - ) density at the surfactant−inorganic interface through the elec…
Polyoxometalates: Synthesis and ApplicationsMesoporous Materials and CatalysisAnalytical Chemistry and Sensors
Wonmun Choi、Fumio Sanda、Takeshi Endō1998-11-13Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTA Novel Construction of Living Polymerization by Neighboring Group Participation: Living Cationic Ring-Opening Polymerization of a Five-Membered Cyclic DithiocarbonateWonmun Choi, Fumio Sanda, and Takeshi EndoView Author Information…
Marine Biology and Environmental ChemistrySynthetic Organic Chemistry MethodsPolymer Surface Interaction Studies
Tsukasa Torimoto、Shuhei Nagakubo、Matsuhiko Nishizawa 等 4 位作者1998-11-13Langmuir
Size-quantized CdS thin films were prepared by sequential underpotential deposition of S and Cd on Au(111). The prepared films in an aqueous solution containing triethanolamine as a sacrificial electron donor showed n-type photoelectrode behaviors. Action spectra of anodic photocurrents were red-shifted with an increa…
Chalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applicationsQuantum Dots Synthesis And Properties
Toshiyuki Masui、Yu‐Min Peng、Ken‐ichi Machida 等 4 位作者1998-11-13Chemistry of Materials
CeO 2 −ZrO 2 solid solutions were prepared by means of thermal decomposition of cerium zirconyl oxalate in an argon flow at 1273 K followed by oxidation at 673−873 K in air. The reduction behavior of the obtained CeO 2 −ZrO 2 powders was investigated and compared with the samples prepared by the other methods already…
Catalysis and Oxidation ReactionsCatalysis and Hydrodesulfurization StudiesCatalytic Processes in Materials Science
Renaud Denoyel、E.Sabio Rey1998-11-13Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTSolubilization in Confined Surfactant MesophasesR. Denoyel and E. Sabio ReyView Author Information Centre de Thermodynamique et Microcalorimétrie du CNRS, 26, rue du 141 RIA, 13003 Marseille, France, and Escuela de Ingenieras Industriales, Universidad de Extremadura Carretera d…
Photochemistry and Electron Transfer StudiesSurfactants and Colloidal SystemsMesoporous Materials and Catalysis
Christopher M. Wijmans、Eric Dickinson1998-11-13Langmuir
We have studied the small-deformation rheology of a (semi-) two-dimensional model network of spherical particles, representing an adsorbed monolayer of protein at a fluid−fluid interface. The particles are confined at the interface in a steep potential well. A percolating network is generated through the formation of…
Pickering emulsions and particle stabilizationMaterial Dynamics and PropertiesBlood properties and coagulation
David G. Whitten、Liaohai Chen、H. Cristina Geiger 等 5 位作者1998-11-13The Journal of Physical Chemistry B
This feature article presents an overview of a study of several different aromatic-functionalized amphiphiles fatty acid and phospholipid derivatives. These amphiphiles form organized assemblies when the fatty acids are spread as monolayers at the air−water interface or when the phospholipids are dispersed in aqueous…
Supramolecular Self-Assembly in MaterialsSurfactants and Colloidal SystemsPorphyrin and Phthalocyanine Chemistry
Sharon J. Cooper、E. D. T. Atkins、Mary J. Hill1998-11-13Macromolecules
The structural changes induced as a function of temperature in lamellar crystals of monodisperse oligoamides of nylon 6 and nylon 6 6 have been studied using differential scanning calorimetry, X-ray diffraction and electron diffraction. Three different types of solid-state transformations, differing in their mechanism…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesPolymer crystallization and properties
Tania Weyland、Karine Costuas、A. Mari 等 5 位作者1998-11-13Organometallics
The bi- and trinuclear iron(III) complexes [1,3-{Cp*(dppe)Fe(C⋮C−)} 2 (C 6 H 4 )][PF 6 ] 2 ( 2 2+ ) and [1,3,5-{Cp*(dppe)Fe(C⋮C−)} 3 (C 6 H 3 )] [PF 6 ] ( 3 3+ ) were prepared by oxidation of [1,3-{Cp*(dppe)Fe(C⋮C−)} 2 (C 6 H 4 )] or [1,3,5-{Cp*(dppe)Fe(C⋮C−)} 3 (C 6 H 3 )] with 2 or 3 equiv of [(C 5 H 5 ) 2 Fe][PF 6…
Metal complexes synthesis and propertiesMetal-Catalyzed Oxygenation MechanismsMagnetism in coordination complexes
Jayasimha Rao、Grzegorz Bujacz、A. Wlodawer1998-11-13FEBS Letters
The crystal structure of rabbit muscle creatine kinase, solved at 2.35 A resolution by X-ray diffraction methods, clearly identified the active site with bound sulfates surrounded by a constellation of arginine residues. The putative binding site of creatine, which is occupied by a sulfate group in this analysis, has…
Enzyme Structure and FunctionBiochemical and Molecular ResearchMuscle metabolism and nutrition
Emanuele Bellacchio、Rosaria Lauceri、Sergio Gurrieri 等 6 位作者1998-11-13Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTemplate-Imprinted Chiral Porphyrin AggregatesEmanuele Bellacchio, Rosaria Lauceri, Sergio Gurrieri, Luigi Monsù Scolaro, Andrea Romeo, and Roberto PurrelloView Author Information Dipartimento di Scienze Chimiche Università di Catania, Viale Andrea Doria 6 95125 Catani…
Molecular Sensors and Ion DetectionNeonatal Health and BiochemistryPorphyrin and Phthalocyanine Chemistry
Toshihiro Ishikawa、Shinji Kajii、Kenji Matsunaga 等 6 位作者1998-11-13Science
A sintered silicon carbide fiber-bonded ceramic, which consists of a highly ordered, close-packed structure of very fine hexagonal columnar fibers with a thin interfacial carbon layer between fibers, was synthesized by hot-pressing plied sheets of an amorphous silicon-aluminum-carbon-oxygen fiber prepared from an orga…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesSilicon Carbide Semiconductor Technologies
A. Bergara、J. M. Pitarke、P. M. Echenique1998-11-13arXiv
The electronic response of a two-dimensional (2D) electron system represents a key quantity in discussing one-electron properties of electrons in semiconductor heterojunctions, on the surface of liquid helium and in copper-oxide planes of high-temperature superconductors. We here report an evaluation of the wave-vecto…
Materials Science
M. L. Nguyen、S. N. Coppersmith1998-11-13arXiv
We attempt to describe the stress distributions of granular packings using lattice-based layer-by-layer stochastic models that satisfy the constraints of force and torque balance and non-tensile forces at each site. The inherent asymmetry in the layer-by-layer approach appears to lead to an asymmetric force distributi…
Soft Condensed MatterMaterials Science