Paul V. Bernhardt、Peter Comba、Neil F. Curtis 等 7 位作者1990-08-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoordination of the "pendant-arm" macrocycle 6,13-diamino-6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane to chromium(III). Crystal structure and physical properties of the hexacoordinated complex ionPaul V. Bernhardt, Peter Comba, Neil F. Curtis, Trevor W. Hambley, Geoffrey…
Metal complexes synthesis and propertiesLanthanide and Transition Metal ComplexesRadiopharmaceutical Chemistry and Applications
E. Jorge、Thierry Chartier、P. Boch1990-08-01Journal of the American Ceramic Society
Ultrasonication is very effective in dispersing alumina and barium titanate slurries. When optimum conditions are used, very short durations (2 to 3 min) are enough to achieve well‐dispersed, stable suspensions.
Ultrasound and Cavitation PhenomenaMicrowave-Assisted Synthesis and ApplicationsNuclear materials and radiation effects
A. M. Shaikh1990-08-01Journal of Applied Crystallography
Microcrystalline vaterite, CaCO3, has been synthesized by decomposition of ikaite, CaCO3.6H2O, crystals at room temperature. Scanning electron micrographs show that vaterite occurs as arborescent aggregates ~30 to 40 μm in size. This growth form has not been described before. It is of interest that the overall morphol…
Geological and Geochemical AnalysisCalcium Carbonate Crystallization and InhibitionMinerals Flotation and Separation Techniques
Pere Alemany、Santiago Álvarez、Roald Hoffmann1990-08-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe electronic structure of barium gallium antimonide (Ba7Ga4Sb9): a compound seemingly probing the limits of the Zintl conceptPere Alemany, Santiago Alvarez, and Roald HoffmannCite this: Inorg. Chem. 1990, 29, 17, 3070–3073Publication Date (Print):August 1, 1990Publication…
Advanced Thermoelectric Materials and DevicesIron-based superconductors researchInorganic Chemistry and Materials
Siegmar Roth、M. Filzmoser1990-08-01Advanced Materials
The insulator‐to‐metal transition , doping, the mechanism of conductivity, solitons, and organic ferromagnets are among the topics covered in this overview of developments in conducting polymers. The materials are already in commercial use in, for example, batteries. Further possibilities are examined and the latest d…
Organic Electronics and PhotovoltaicsAdvanced Memory and Neural ComputingConducting polymers and applications
W. J. McGrory、William H. Tuminello1990-08-01Journal of Rheology
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation W. J. McGrory, W. H. Tuminello; Determining the molecular weight distribution from the stress rel…
Food composition and propertiesTextile materials and evaluationsFiber-reinforced polymer composites
Gianfranco Pacchioni、Notker Roesch1990-08-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure of nickel carbonyl clusters: chemical bonding and spectroscopy of [Ni5(CO)12]2-, [Ni6(CO)12]2-, and [Ni8C(CO)16]2- studied by the LCGTO-LDF methodGianfranco Pacchioni and Notker RoeschCite this: Inorg. Chem. 1990, 29, 16, 2901–2908Publication Date (Print…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesMolecular Junctions and Nanostructures
Jacques Lamon1990-08-01Journal of the American Ceramic Society
Methodology for designing reliable ceramic components requires a precise evaluation and correlation of strengths in different stress states. The present paper compares the merits of the Weibull approach and the multiaxial elemental strength model on an experimental case involving mixed‐mode failure in the presence of…
Advanced ceramic materials synthesisFatigue and fracture mechanicsHigh-Velocity Impact and Material Behavior
T. Pojasok、B. D. Kay1990-08-01Canadian Journal of Soil Science
The effect of root exudates on structural stability and the hypothesis that the growing roots of corn (Zea mays L.) can destabilize soil structure by chelating Fe and Al involved in mineral-metal-organic matter linkages were investigated. Exudates were removed from 14 C-labelled corn and bromegrass (Bromus inermis Ley…
Soil Carbon and Nitrogen DynamicsSoil and Unsaturated FlowClay minerals and soil interactions
Joseph S. Hayden、Yuiko T. Hayden、Jack H. Campbell1990-08-01Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Results are reported from a composition study of forty-one phosphate glasses that are derivatives of a commercially available Nd-doped laser glass. Systematic variations have been made in the quantities of alkali and alkaline earth components in the glass. Correlations are developed relating the compositionally-averag…
Glass properties and applicationsPhotorefractive and Nonlinear OpticsSolid State Laser Technologies
Martin Přádný、Jindŕich Kopec̆ek1990-08-01Die Makromolekulare Chemie
Abstract Copolymers of acrylic acid and butyl acrylate crosslinked with 4,4′‐bis(methacryloylamino)‐azobenzene were synthesized by radical copolymerization with different amounts of acrylic acid and crosslinker. They were characterized by equilibrium degree of swelling, modulus of elasticity in compression at pH 2 and…
Hydrogels: synthesis, properties, applicationsAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties
Thomas P. Fehlner、Paul T. Czech、Richard F. Fenske1990-08-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplication of the Fenske-Hall molecular orbital method to the calculation of boron-11 NMR chemical shifts. Antipodal substituent effects in deltahedral clustersThomas P. Fehlner, Paul T. Czech, and Richard F. FenskeCite this: Inorg. Chem. 1990, 29, 17, 3103–3109Publication…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMolecular spectroscopy and chirality
H. Naarmann1990-08-01Advanced Materials
The development of polyacetylenes, polythiophenes and polypyrroles , amongst other conducting polymers is traced from an industrial point of view by one of the pioneers in the field. The methods used for the production of the materials are described and present and future applications are assessed.
Organic Electronics and PhotovoltaicsConducting polymers and applicationsPolydiacetylene-based materials and applications
Janneke Helder、P.J. Dijkstra、Jan Feijén1990-08-01Journal of Biomedical Materials Research
The in vitro degradation of glycine-DL-lactic acid copolymers was studied as a function of the composition. These polydepsipeptides were prepared by ring-opening copolymerization of 6-methyl-2,5-morpholinedione and DL-lactide. The degradation of discs of the copolymers was performed in a phosphate buffer at pH 7.4 and…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesAdvanced Drug Delivery Systems
Marcelo J. Avena、R.A. Cabrol、Carlos P. De Pauli1990-08-01Clays and Clay Minerals
Abstract The surface charges and the zeta potential of a Na-montmorillonite (Na-mont) and two pillared montmorillonite (MP1 and MP2) samples with different aluminum contents were determined by Potentiometric titrations and electrophoretic measurements. At pH >9 the two pillared montmorillonite samples showed zeta p…
Mesoporous Materials and CatalysisClay minerals and soil interactionsIron oxide chemistry and applications
Maureen M. Sweeney、Donna Branson1990-08-01Textile Research Journal
This study was part of an overall effort to explore the feasibility of using psycho physical methods to assess one component of sensorial comfort, moisture sensation in clothing, We have used a psychophysical approach to assess the relationship between moisture stimulus intensity and moisture sensation in subjects for…
Thermoregulation and physiological responsesTextile materials and evaluationsColor perception and design
W. Howard、D.R. Huang、Jiangyan Yuan 等 7 位作者1990-08-01Journal of Applied Physics
Diamond particles 10–500 nm in diameter were produced by microwave-assisted combustion of acetylene in oxygen. Both premixed and diffusion flame configurations were investigated. A mixture of cubic and hexagonal polytypes of diamond were identified. Larger particle sizes were observed at lower reactor pressure and hig…
Graphene research and applicationsDiamond and Carbon-based Materials ResearchAdvanced materials and composites
Carlo G. Pantano、T. N. Wittberg1990-08-01Surface and Interface Analysis
Abstract The photelectron spectra of five different liquid silanes were measured. Their C 1s spectra and measured compositions were all consistent with the theoretical formula of these compounds. Subsequently, E‐glass fibers were exposed to dilute aqueous solutions of these silanes, and their adsorption on the fiber s…
Graphene research and applicationsRecycling and Waste Management TechniquesElectron and X-Ray Spectroscopy Techniques
Safa Kasap、B. Polischuk、D.E. Dodds1990-08-01Review of Scientific Instruments
An interrupted field time-of-flight (IFTOF) technique that enables displacement-current-free measurement of the photocurrent in the conventional transient photoconductivity experiment is described and implemented. During the drift of the photoinjected charge carriers across the sample, the applied field is removed at…
Thin-Film Transistor TechnologiesPhase-change materials and chalcogenidesSemiconductor materials and interfaces
Naoki Toshima1990-08-01Journal of Macromolecular Science Part A - Chemistry
Colloidal dispersions of polymer-protected Pd/Pt and Pd/Au bimetallic clusters were prepared by reduction of an alcoholic solution of PdCl2 and H2PtCl6 or HAuCl4 in the presence of poly(N-vinyl-2-pyrrolidone). The reduction can be carried out by refluxing in alcohol or by irradiation with visible light. The dispersion…
Catalytic Processes in Materials ScienceNanocluster Synthesis and ApplicationsNanomaterials for catalytic reactions