Alexander P. Wolfe、Mark B. Edlund2005-02-01Canadian Journal of Earth Sciences
A new centric diatom genus is described from laminated freshwater sediments of Middle Eocene age near Horsefly, British Columbia, Canada. This diatom, Eoseira wilsonii gen. et sp. nov., grew in filaments that constitute dense monospecific sub-horizons within the white couplets that represent summer deposition in the v…
Geology and Paleoclimatology ResearchPaleontology and Stratigraphy of FossilsDiatoms and Algae Research
Haralampos N. Miras、Raphael G. Raptis、N. Lalioti 等 6 位作者2005-02-01Chemistry - A European Journal
Reaction of NH4VO3 with sulfur dioxide affords the hexanuclear cluster (NH4)2(Et4N)[(V(IV)O)6(mu4-O)2(mu3-OH)2(mu3-SO3)4(H2O)2]Cl x H2O (1), and the decapentanuclear host-guest compound (Et4N)5{Cl subset [(VO)15(mu3-O)18(mu-O)3]} x 3 H2O (2). Sequential addition of magnesium oxide to an acidic aqueous solution of NH4V…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry
Jack R. Smith、Vladyslav Kholodovych、Doyle Knight 等 5 位作者2005-02-01QSAR & Combinatorial Science
Abstract We present two surrogate (semi‐empirical) models for prediction of both Protein Adsorption (PA) onto, and Cellular Response (CR) to, the surfaces of biodegradable polymers that have been designed for tissue engineering applications. We explore several of the key issues in the modeling process including the se…
Computational Drug Discovery MethodsEnvironmental Impact and SustainabilityMachine Learning in Materials Science
Toby Hudson、S. L. Dudarev、M.J. Caturla 等 4 位作者2005-02-01The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics
We describe a series of kinetic Monte Carlo simulations of post-cascade radiation damage evolution in α-iron that illustrates the part played by elastic interaction between defects. Elastic interactions are included as a bias to the diffusion of mobile point defects and defect clusters. The simulations show that recom…
Fusion materials and technologiesNuclear reactor physics and engineeringNuclear Materials and Properties
Shing-Trong Wu、Andy Ying‐Guey Fuh2005-02-01Japanese Journal of Applied Physics
We describe the observation of lasing in photonic crystals (PCs) based on a polymer-dispersed liquid crystal (PDLC) reflection grating, which has a periodic structure of nano-sized (< 200 nm) LC droplets/polymer in a film. It is fabricated using two counter propagation laser beams similar to those used in standard…
Photonic and Optical DevicesLiquid Crystal Research AdvancementsPhotonic Crystals and Applications
Jacques M. Laniel、Nicolas Hô、Réal Vallée 等 4 位作者2005-02-01Journal of the Optical Society of America B
The nonlinear refractive index (n2) of an As2S3 channel waveguide at 1.55 µm has been measured. The n2 was deduced when the spectral broadening and modulation due to self-phase modulation (SPM) were characterized. Owing to the temporal asymmetry of the injected pulse, a specific approach to asymmetric SPM is presented…
Photorefractive and Nonlinear OpticsPhase-change materials and chalcogenidesNonlinear Optical Materials Studies
Andreas Ertl2005-02-01American Mineralogist
Pink, Mn-bearing “oxy-rossmanite” from a pegmatite in a quarry near Eibenstein an der Thaya, Lower Austria, has been characterized by crystal structure determination, chemical analyses (EMPA, SIMS), and optical absorption and infrared spectroscopy. Crystal structure refinements in combination with the chemical analyse…
Geological and Geochemical AnalysisCrystal Structures and PropertiesNuclear materials and radiation effects
William J. Hunks、Geoffrey A. Ozin2005-02-01Advanced Functional Materials
Abstract A new class of bifunctional periodic mesoporous organosilicas (PMOs) composed of organosilicate building blocks with two different silicon sites have been synthesized from the single‐source bifunctional organosilica precursors tris(triethoxysilylethyl)ethoxysilane and bis(triethoxysilylethyl)diethoxysilane, r…
Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsCovalent Organic Framework Applications
Hiroki Fujita、Carlos G. Levi、Frank W. Zok 等 4 位作者2005-02-01Journal of the American Ceramic Society
This study focuses broadly on synthesis and characterization of porous mullite/alumina mixtures for use as matrices in oxide fiber composites. Specifically, an assessment is made of the utility of a precursor‐derived alumina (PDA) in controlling both the modulus and the toughness of mullite‐rich particle mixtures. Pro…
Concrete and Cement Materials ResearchAdvanced ceramic materials synthesisRecycling and utilization of industrial and municipal waste in materials production
Mark P.S. Krekeler、Eric Hammerly、John Rakovan 等 4 位作者2005-02-01Clays and Clay Minerals
Abstract The transformation process between palygorskite and smectite was studied by examining the morphological and structural relationships between these two minerals in an assemblage from the Meigs Member of the Hawthorne Formation, southern Georgia. Studied samples were related to an alteration horizon with a tan…
Geological and Geochemical AnalysisClay minerals and soil interactionsMineralogy and Gemology Studies
Satoshi Okumura2005-02-01American Mineralogist
We determined near-infrared (NIR) molar absorptivities of hydroxyl group (4500 cm -1 ) and molecular water (5230 cm -1 ) in rhyolitic glasses at room temperature and at high temperature, 400.600 °C. Five rhyolitic glasses with 0.5.2.8 wt% total water were analyzed by FT-IR microspectroscopy at room temperature and at…
Geological and Geochemical AnalysisGlass properties and applicationsGeochemistry and Geologic Mapping
Y. Wang、Jinghua Wang、Jinchang Zhang 等 4 位作者2005-02-01Materials and Corrosion
With increasing applied voltage, three types of anodic coatings, passive film, micro-spark ceramic coating and spark ceramic coating were made by micro-arc oxidization (MAO) technique on AZ91D magnesium alloy in alkali-silicate solution. The structure, composition characteristics and the electrochemical properties of…
Corrosion Behavior and InhibitionMagnesium Alloys: Properties and ApplicationsAdvanced Welding Techniques Analysis
Alexandros Pertsinidis、Xinsheng Ling2005-02-01New Journal of Physics
Colloidal suspension of monodispersed charged polystyrene microspheres provides an excellent experimental system for a study of condensed matter physics. Here we report a series of experiments using video microscopy to study the structure and dynamics of colloidal matter. In the first set of experiments, we give a cle…
Material Dynamics and PropertiesSpectroscopy and Quantum Chemical StudiesAdvanced Thermodynamics and Statistical Mechanics
Frank Berger、Anita Müller、Fritz Aldinger 等 4 位作者2005-02-01Zeitschrift für anorganische und allgemeine Chemie
Abstract Multinuclear ( 13 C, 29 Si, 11 B, 1 H) solid‐state NMR and EPR spectroscopy are employed to study the thermolysis of boron‐modified poly(allylmethylsilazane), [B{C 3 H 6 ‐Si(CH 3 )NH} 3 ] n , from which a quaternary Si‐C‐B‐N ceramic is formed. The investigations are primarily focused on the characterization o…
Advanced ceramic materials synthesisBoron and Carbon Nanomaterials ResearchMXene and MAX Phase Materials
V.I. Demidiouk、J. O. Chae2005-02-01IEEE Transactions on Plasma Science
A plasma-catalytic combined reactor system was used to decompose volatile organic compounds. Metal oxide catalysts, as well as Pt-based catalyst, were employed in the studies. The plasma treatment alone leads to the formation of high concentration of byproducts. A Pt-based catalyst, combined with plasma reactor, was h…
Catalytic Processes in Materials SciencePlasma Applications and DiagnosticsPlasma Diagnostics and Applications
Loredana Magistri、Alberto Traverso、F. Cerutti 等 6 位作者2005-02-01Fuel Cells
Abstract This work describes different models, developed by the Thermochemical Power Group at the University of Genoa (Italy), for the simulation of solid oxide fuel cell and gas turbine hybrid systems. The paper focuses on both “cores” of the system: the fuel cell stack on the one hand and the turbomachinery and the…
Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsCatalysis and Oxidation Reactions
Ross P. Carlson、Aaron Wlaschin、Friedrich Srienc2005-02-01Applied and Environmental Microbiology
Poly-(R)-3-hydroxybutyric acid (PHB) was synthesized anaerobically in recombinant Escherichia coli. The host anaerobically accumulated PHB to more than 50% of its cell dry weight during cultivation in either growth or nongrowth medium. The maximum specific PHB production rate during growth-associated synthesis was app…
Biofuel production and bioconversionbiodegradable polymer synthesis and propertiesMicrobial Metabolic Engineering and Bioproduction
Ramakumar Allada2005-02-01American Mineralogist
Interest in hydrotalcite-like compounds has grown due to their role in controlling the mobility of aqueous metals in the environment as well as their use as catalysts, catalyst precursors, and specialty chemicals. Although these materials have been studied in a number of contexts, little is known of their thermodynami…
Layered Double Hydroxides Synthesis and ApplicationsThermal Expansion and Ionic ConductivityMagnesium Oxide Properties and Applications
Iñaki Iriarte、Sabine Petit、F. Javier Huertas 等 7 位作者2005-02-01Clays and Clay Minerals
Abstract Fe-rich kaolinites were synthesized at 225°C in distilled water from gels with different Fe/Al ratios (0.15, 0.25, 0.35) and with Si/(Al + Fe) = 2. X-ray diffraction patterns of the reaction products showed that kaolinite was the only long-range crystalline phase synthesized. Analytical electron microscopy an…
Arsenic contamination and mitigationClay minerals and soil interactionsIron oxide chemistry and applications
Abimbola Ogunsipe、Tebello Nyokong2005-02-01Journal of Porphyrins and Phthalocyanines
The photophysical and photochemical properties and quenching (by 1,4-benzoquinone) of metallophthalocyanine sulfonates of aluminium ( AlPcS mix ), zinc ( ZnPcS mix ), silicon ( SiPcS mix ), germanium ( GePcS mix ) and tin ( SnPcS mix ) are presented. The quantum yield values of fluorescence (Φ F ), triplet state (Φ T…
Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesAnalytical Chemistry and Sensors