Vladimir V. Zverlov、G. A. Velikodvorskaya、Wolfgang H. Schwarz2002-01-01Microbiology
The sequence of the celO gene from Clostridium thermocellum F7 was determined. The gene product, cellulase CelO (Ct-Cel5F), had a modular structure consisting of a carbohydrate-binding module of the CBM3 family and a catalytic domain of the glycosyl hydrolase family 5. The presence of the dockerin module indicated tha…
Biofuel production and bioconversionAdvanced Cellulose Research StudiesPolysaccharides and Plant Cell Walls
T. Mansaré、R. Decressain、C. Gors 等 4 位作者2002-01-01Molecular Crystals and Liquid Crystals
The polymorphism of 4-cyano-4′-pentylbiphenyl (5CB) was investigated by means of differential scanning calorimetry (DSC), X-ray diffraction, and proton nuclear magnetic resonance (NMR) experiments. Three new phases has been identified and characterized structurally and dynamically. By a slow cooling at a rate ≤ 0.2 K/…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesMolecular spectroscopy and chirality
Myoung-Gyun Kim、S KIM、Young‐Jig Kim2002-01-01MATERIALS TRANSACTIONS
The aim of the present paper is to investigate the combined effect of mold material and binder for investment casting of titanium and titanium alloys. A plasma arc melting furnace was used for melting titanium alloy, and the interfacial reaction of titanium castings was determined by optical microscope, SEM, EDS analy…
Aluminum Alloys Composites PropertiesTitanium Alloys Microstructure and PropertiesAdvanced materials and composites
A. Hofrichter、Pavel Bulkin、B. Drévillon2002-01-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
The deposition of silicon alloys for protective and optical coatings on polymers is of increasing interest. The understanding of the plasma polymer interaction is of prime importance here. In this work, we report a study of the influence of N2, H2, and O2 plasma treatments on pure and commercial grade polycarbonate (P…
Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsDiamond and Carbon-based Materials Research
Goran Štefanić、Svetozar Musić2002-01-01Institutional Repository of the Ruđer Bošković Institute (Ruđer Bošković Institute)
Various factors that influence the appearance of a tetragonal (t-) ZrO2 polymorph at room temperature have been extensively investigated. Several proposed models emphasize the role of anionic impurities (SO42-, OH-), crystallite size (surface energy), structural similarities between the starting material and t-ZrO2, l…
Advanced ceramic materials synthesisIntermetallics and Advanced Alloy PropertiesNuclear Materials and Properties
Soichiro Sameshima、Manabu Kawaminami、Yoshihiro Hirata2002-01-01Journal of the Ceramic Society of Japan
The thermal expansion of CeO2 and rare-earth-doped ceria (Ce0.8R0.2O1.9, R: Yb, Y, Gd, Sm, Nd and La) was measured in the temperature range from 298 to 1473 K. The coefficients of thermal expansion (CTE) were determined by differentiating the thermal expansion expressed by a polynominal equation of temperature with re…
Catalytic Processes in Materials ScienceNuclear Materials and PropertiesThermal and Kinetic Analysis
Ewa Huskowska、Ilona Turowska‐Tyrk、J. Legendziewicz 等 4 位作者2002-01-01New Journal of Chemistry
Single crystals of [Ln(2,2′-bipyridine-1,1′-dioxide)4](ClO4)3 (Ln = Nd, Lu) have been obtained and the crystal structures determined. By comparison with previous structural determinations, it is demonstrated that steric crowding associated with the decreasing lanthanide ions radius causes changes of the angles between…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
James I. Bruce、David Parker、Stefan Lopinski 等 4 位作者2002-01-01Chirality
The development of emissive lanthanide complexes as structural or reactive probes to signal changes in their local chiral or ionic environment has been inhibited by the lack of understanding of correlating structural and electronic spectral information. The definition of relatively rigid enantiopure macrocyclic lantha…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesAdvanced NMR Techniques and Applications
Joseph B. Carroll、Benjamin L. Frankamp、Vincent M. Rotello2002-01-01Chemical Communications
Diaminopyridine-functionalized polyhedral oligomeric silsequioxanes (POSS-DAP) self-assemble with complementary thymine-functionalized Au nanoparticles (Thy-Au) into well-defined spherical aggregates, providing highly structured nanocomposites.
Dendrimers and Hyperbranched PolymersMarine Biology and Environmental ChemistrySilicone and Siloxane Chemistry
Bok-Cheol Sim、Abdelfattah Zebib2002-01-01Physics of Fluids
Oscillatory thermocapillary convection in an open cylindrical annulus heated from the inside wall is investigated numerically. Results for aspect ratio of 1 and Prandtl number of 30 are obtained to compare the simulations with available space experiments. The influence of surface heat loss as quantified by a Biot numb…
Solidification and crystal growth phenomenaFluid Dynamics and Thin FilmsCharacterization and Applications of Magnetic Nanoparticles
D. H. Mosca、N. Mattoso、C.M. Lepienski 等 7 位作者2002-01-01Journal of Applied Physics
The mechanical properties of InSe and GaSe single crystals have been studied by means of nanoindentation tests. Both bulk crystals are well ordered and present a predominant γ-type interlayer stacking sequence as determined by x-ray diffraction and transmission electron microscopy measurements. The course of plastic d…
Boron and Carbon Nanomaterials ResearchSemiconductor materials and interfacesSolid-state spectroscopy and crystallography
Khouloud A. Alkhamis、Aiman A. Obaidat、Adi Al-Nuseirat2002-01-01Pharmaceutical Development and Technology
Two polymorphs and three solvates of fluconazole were isolated and characterized by x-ray powder diffractometry, IR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry, and their dissolution rates. The different forms were prepared by crystallization of the original powder in different solvents at…
Crystallization and Solubility StudiesThermal and Kinetic AnalysisX-ray Diffraction in Crystallography
D. Robinson、S. Th. Schmidt、Azucena Zamora2002-01-01Journal of Metamorphic Geology
Abstract The transformation from smectite to chlorite has been interpreted as involving either a disequilibrium chlorite/smectite mixed‐layering sequence, or an equilibrated discontinuous sequence involving smectite–corrensite–chlorite. Here, analysis of the smectite to chlorite transition in different geothermal syst…
Geological and Geochemical AnalysisCO2 Sequestration and Geologic InteractionsClay minerals and soil interactions
Changrong Xia、William L. Rauch、William B. Wellborn 等 4 位作者2002-01-01Electrochemical and Solid-State Letters
Functionally graded cathodes were fabricated by slurry coating process for honeycomb solid oxide fuel cells with yttria-stabilized zirconia (YSZ) electrolytes. The cathodes are composed of strontium-doped lanthanum manganate (LSM), gadolinia-doped ceria, and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF). The LSM content was…
Advancements in Solid Oxide Fuel CellsCatalysis and Oxidation ReactionsElectronic and Structural Properties of Oxides
Claudio Pettinari、F. Marchetti、Riccardo Pettinari 等 7 位作者2002-01-01Journal of the Chemical Society Dalton Transactions
The isolation and characterization of new lanthanide complexes of formula [Ln(QL)3(EtOH)(H2O)], (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb; HQL = 1-phenyl-3-methyl-4-phenylacetylpyrazol-5-one) [Ln(QL)3(H2O)2] (L = La or Lu), [Ln(QS)3(EtOH)(H2O)] (Ln = Tb or Eu; HQS = 1-phenyl-3-methyl-4-thienoylpyrazol-5-one…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Shanmin Gao、Jun Lu、Nan Chen 等 5 位作者2002-01-01Chemical Communications
A mild aqueous synthesis route was successfully established to synthesize well crystallized and monodisperse GaP and InP nanocrystals, which were proved to exhibit pronounced quantum confinement by room-temperature UV/Vis adsorption and photoluminescence (PL) spectra.
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications
Prashant Panda、T. S. Kannan、J. Harry DuBois 等 5 位作者2002-01-01Science and Technology of Advanced Materials
A test equipment was designed to study thermal shock and thermal fatigue of ceramic materials subjected to fast heating (ascending). The equipment was designed to generate thermal stress in a test specimen by heating one surface of it by an oxy-hydrogen flame while cooling the opposite surface. The sample cracked when…
Advanced ceramic materials synthesisNuclear Materials and PropertiesAdvanced materials and composites
Noriaki Kubota、Norihito Doki、Masaaki Yokota 等 4 位作者2002-01-01JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
This paper reviews research work concerning the size distribution of product crystals in batch crystallization of well-soluble materials. The discussion was made with particular emphasis on seeding effect on product crystal size distribution and crystallizer performance. First, it is shown by a brief survey of the his…
Minerals Flotation and Separation TechniquesCrystallization and Solubility StudiesFreezing and Crystallization Processes
Yury P. Rakovich、Sergej Filonovich、M. J. M. Gomes 等 7 位作者2002-01-01physica status solidi (b)
For the first time highly efficient photon energy up-conversion (anti-Stokes photoluminescence) has been observed in colloids of CdTe nanocrystals (NCs) and CdSe NCs covered by ZnS shell. The maximum magnitude of the up-converted blue shift ΔEUCmax = 335 meV was obtained for CdSe/ZnS NCs under excitation by a low-powe…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNonlinear Optical Materials Studies
Þröstur Þorsteinsson2002-01-01Journal of Geophysical Research Atmospheres
Polycrystals undergoing ductile deformation develop lattice‐preferred orientation (fabric) as a result of intracrystalline slip. A consequence of fabric development is that bulk physical properties become anisotropic. Fabric development and macroscopic deformation are studied by examining three effects: nearest‐neighb…
Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsCryospheric studies and observations