Brigitte Pomarède、B. Garreau、Isabelle Malfant 等 9 位作者1994-07-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Crystal Structure, Electrical Properties and Electronic Band Structure of (NHyMe4-y)x[M(dmit)2] Complexes (M = Ni, Pd, Pt; dmit2- = 2-Thioxo-1,3-dithiole-4,5-dithiolato)Brigitte Pomarede, Benedicte Garreau, Isabelle Malfant, Lydie Valade, P. Cassoux, Jean-Pierre L…
Magnetism in coordination complexesMetalloenzymes and iron-sulfur proteinsOrganic and Molecular Conductors Research
P. Stachowiak、V. V. Sumarokov、J. Mucha 等 4 位作者1994-07-01Physical review. B, Condensed matter
Thermal conductivity of crystalline natural nitrogen was investigated over the temperature range 1.2--38 K. The temperature dependence of thermal conductivity of \ensuremath{\alpha}-nitrogen has been determined in temperatures below 18 K. The thermal conductivity coefficient reaches the maximum value 250 mW/cm K at 3.…
Thermal properties of materialsComposite Material MechanicsThermal Radiation and Cooling Technologies
P.J.R. Honeybone、Robert J. Newport、J K Walters 等 5 位作者1994-07-01Physical review. B, Condensed matter
Inelastic-neutron-scattering experiments have been performed on samples of amorphous hydrogenated carbon, prepared from acetylene and propane, containing about 35 and 32 at. % hydrogen, respectively. In these hard carbons, the hydrogen is predominantly bonded to ${\mathit{sp}}^{3}$ carbon, with approximately equal con…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchGlass properties and applications
F. Yubero、J. M. Sanz、J.F. Trigo 等 5 位作者1994-07-01Surface and Interface Analysis
Abstract The dielectric loss function of ZrO 2 over 0–80 eV has been determined from a quantitative analysis of reflection electron energy loss spectra (REELS) at different primary energies. From this, the inelastic electron mean free path for 200–2000 eV electrons in ZrO 2 has been calculated. The inelastic mean free…
Semiconductor materials and devicesElectron and X-Ray Spectroscopy TechniquesGa2O3 and related materials
Naoki Toshima、Hu Yan、Mariko Ishiwatari1994-07-01Bulletin of the Chemical Society of Japan
Abstract The catalytic polymerization of aniline and its derivatives was performed by stirring the solution of the corresponding monomer and copper(II) salts (50/5, mmol/mmol) in acetonitrile and water (1/1, v/v) under oxygen at room temperature for 24 h. Among copper salts, CuBr2 and CuCl2 are more active than the ot…
Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Takushi Nagata、Kiyomi Imagawa、Tohru Yamada 等 4 位作者1994-07-01Chemistry Letters
Abstract Enantioselective aerobic epoxidation of acyclic cis-olefins into the corresponding optically active epoxides was carried out with good-to-high enantioselectivities by using a new class of optically active β-ketoiminato manganese(III) complex catalyst, N,N′-ethylenebis(α-mesitoyl-β-ketoiminato)manganese(III) c…
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsOxidative Organic Chemistry Reactions
J.‐P. Jacobs、S. Reijne、R. J. M. Elfrink 等 6 位作者1994-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
The influence of the chemical environment on the low-energy ion scattering (LEIS) intensities from aluminum and nickel is investigated by studying a number of different alloys (Ag80Al20, Ni80Pt20, NiAl{110}) and oxides (γ-Al2O3, α-Al2O3, α-Al2O3 sapphire {11̄02}, NiO, 14 wt % Ni/γ-Al2O3). The neutralization behavior o…
Aluminum Alloys Composites PropertiesCopper Interconnects and ReliabilityIon-surface interactions and analysis
Ramasamy P. Pandian、T. K. Chandrashekar1994-07-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel Diprophyrins Containing N4 and N3S Cores: Synthesis, Characterization, and Electrochemical PropertiesR. P. Pandian and T. K. ChandrashekarCite this: Inorg. Chem. 1994, 33, 15, 3317–3324Publication Date (Print):July 1, 1994Publication History Published online1 May 2002P…
Metal-Organic Frameworks: Synthesis and ApplicationsSupramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine Chemistry
Ulrike Genz、B. D’Aguanno、Jan Mewis 等 4 位作者1994-07-01Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of Sterically Stabilized ColloidsUlrike Genz, Bruno D'Aguanno, Jan Mewis, and Rudolf KleinCite this: Langmuir 1994, 10, 7, 2206–2212Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inissue 1 July 1994https://pubs.acs.org/…
Minerals Flotation and Separation TechniquesPickering emulsions and particle stabilization
A. D. Vilesov、Georg Floudas、Tadeusz Pakuła 等 6 位作者1994-07-01Macromolecular Chemistry and Physics
Abstract Two cylinder‐forming polystyrene‐ block ‐polybutadiene block copolymers of type A‐B with antisymmetric composition (polymer P1 with A : B = 3 : 1 (w/w) and polymer P2 with A : B = 1 : 3 (w/w)) and their binary mixture were studied by small‐angle X‐ray scattering (SAXS) and transmission electron microscopy (TE…
Advanced Polymer Synthesis and CharacterizationTheoretical and Computational PhysicsBlock Copolymer Self-Assembly
A. V. Postnikov、Tobias Neumann、G. Börstel1994-07-01Physical review. B, Condensed matter
The frequencies of transverse-optical \ensuremath{\Gamma} phonons in ${\mathrm{KNbO}}_{3}$ and ${\mathrm{KTaO}}_{3}$ are calculated in the frozen-phonon scheme making use of the full-potential linearized muffin-tin orbital method. The calculated frequencies in the cubic phase of ${\mathrm{KNbO}}_{3}$ and in the tetrag…
Ferroelectric and Piezoelectric MaterialsCrystal Structures and PropertiesPhotorefractive and Nonlinear Optics
J. van der Weide、R. J. Nemanich1994-07-01Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena
Angle-resolved photoemission from both (100) and (111) oriented, natural type IIb diamond was used to study the electronic structure of diamond. A negative electron affinity (NEA) was found on the 2×1 reconstructed diamond (100) surface. Photoemission spectra of NEA surfaces exhibit a distinctive peak due to emission…
Semiconductor materials and devicesDiamond and Carbon-based Materials ResearchElectronic and Structural Properties of Oxides
Elena E. Dormidontova、I. Ya. Erukhimovich、Alexei R. Khokhlov1994-07-01Macromolecular Theory and Simulations
Abstract Microphase separation in solutions of weakly charged polyelectrolytes in poor solvents is studied in the weak segregation limit within the framework of the mean field approximation using a method first developed by Leibler. As a result a complete phase diagram of the solution near the critical point is obtain…
Surfactants and Colloidal SystemsRheology and Fluid Dynamics StudiesBlock Copolymer Self-Assembly
D. P. H. Hasselman、Kimberly Y. Donaldson、Jeng Liu 等 5 位作者1994-07-01Journal of the American Ceramic Society
The effect of 15 vol% particulate diamond reinforcement on the thermal conductivity of a cordierite matrix was studied as a function of diamond particle size from room temperature to 700°C. The thermal conductivity was found to increase with increasing particle size to a maximum increase of about 75% for a mean partic…
Concrete and Cement Materials ResearchAdvanced ceramic materials synthesisThermal properties of materials
Felix Tuczek、Edward I. Solomon1994-07-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharge-Transfer States and Antiferromagnetism of Bridged Cu Dimers: Application to OxyhemocyaninFelix Tuczek and Edward I. SolomonCite this: J. Am. Chem. Soc. 1994, 116, 15, 6916–6924Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Matthew Neurock、Rutger A. van Santen、W. Biemolt 等 4 位作者1994-07-01Journal of the American Chemical Society
The role of at. and mol. oxygen precursors in the overall catalytic cycle for ammonia dissocn. is analyzed using first-principle d. functional calcns. Adsorption energies for ammonia, mol. oxygen, NHx, NO, and various intermediates and adatoms were computed from geometry optimized calcns. on the model Cu(8,3) cluster…
Catalytic Processes in Materials Science
L. J. Terminello、A. Chaiken、D. A. Lapiano-Smith 等 5 位作者1994-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Bonding in the hexagonal, cubic (zincblende), rhombohedral, and wurtzite phases of boron nitride was characterized using core-level photoabsorption. In the boron and nitrogen 1s photoabsorption cross section we observed resonances that were unique to each of the phases and that were associated with the sp2 or sp3 bond…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research
Craig L. Hom、S.M. Pilgrim、Natarajan Shankar 等 6 位作者1994-07-01IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control
The quasi-static coupling coefficients, k/sub 13/ and k/sub 33/, for electrostrictive ceramics are computed analytically. The calculation is based on a three-dimensional constitutive relation that models both electrostriction and nonlinear dielectric behaviors. The results show that the coupling factors depend on the…
Ferroelectric and Piezoelectric MaterialsUltrasonics and Acoustic Wave PropagationAcoustic Wave Resonator Technologies
Marco Antonio Leyva‐Vázquez、Peter Setlow1994-07-01Journal of Bacteriology
The Bacillus subtilis genes tpi, pgm, and eno, encoding triose phosphate isomerase, phosphoglycerate mutase (PGM), and enolase, respectively, have been cloned and sequenced. These genes are the last three in a large putative operon coding for glycolytic enzymes; the operon includes pgk (coding for phosphoglycerate kin…
Bacterial Genetics and BiotechnologyEnzyme Structure and FunctionAnimal Genetics and Reproduction
Robert D. Miller、Victor Y. Lee、Christopher R. Moylan1994-07-01Chemistry of Materials
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSubstituted Azole Derivatives as Nonlinear Optical ChromophoresRobert D. Miller, Victor Y. Lee, and Christopher R. MoylanCite this: Chem. Mater. 1994, 6, 7, 1023–1032Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inissue 1 July 1…
Nonlinear Optical Materials ResearchPhotochemistry and Electron Transfer Studies