Nobuyuki Horinouchi、Jun Ogawa、Takafumi Sakai 等 8 位作者2003-07-01Applied and Environmental Microbiology
The gene encoding a deoxyriboaldolase (DERA) was cloned from the chromosomal DNA of Klebsiella pneumoniae B-4-4. This gene contains an open reading frame consisting of 780 nucleotides encoding 259 amino acid residues. The predicted amino acid sequence exhibited 94.6% homology with the sequence of DERA from Escherichia…
Enzyme Structure and FunctionEnzyme Production and CharacterizationBiochemical and Molecular Research
A. Igual Muñoz、J. García‐Antón、J. L. Guiñón 等 4 位作者2003-07-01CORROSION
The corrosion resistance and galvanic behavior of three stainless steels (SS), Alloy 33, and titanium were analyzed in commercial lithium bromide (LiBr) heavy brine solutions used in heating and refrigerating systems, with and without additives, using potentiodynamic anodic polarization measurements. Corrosion rates w…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques
D J Stokes、Susan M. Rea、Serena M. Best 等 4 位作者2003-07-01Scanning
Human osteoblast-like (bone-forming) cells were imaged using environmental scanning electron microscopy (ESEM). The cells were hydrated, unfrozen, and uncoated. Specimens were cooled to 3 degrees C and imaged in water vapor, with partial pressures varying from saturated conditions to a humidity of approximately 50%, r…
Hydrogen embrittlement and corrosion behaviors in metalsMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques
O. Seiler、Rüdiger Bertermann、N. Buggisch 等 7 位作者2003-07-01Zeitschrift für anorganische und allgemeine Chemie
Abstract The hexacoordinate silicon(IV) complexes [NEt 4 ] 2 [Si(NCS) 6 ] ( 2 ), [K(18‐crown‐6)] 2 [Si(NCS) 6 ]·2CH 3 CN ( 3· 2CH 3 CN), and cis ‐[(acac) 2 Si(NCS) 2 ] ( cis ‐ 4 ; acac = acetylacetonato‐ O , O ) were synthesized, starting from Si(NCS) 4 ( 1 ). Compounds 1 , 2 , 3· 2CH 3 CN, and cis ‐ 4 were structural…
Magnetism in coordination complexesSynthesis and characterization of novel inorganic/organometallic compoundsInorganic Fluorides and Related Compounds
V. A. Seleznev、Hiroshi Yamaguchi、Y. Hirayama 等 4 位作者2003-07-01Japanese Journal of Applied Physics
We have applied supercritical CO 2 drying technique to fabricate free-standing semiconductor nanotubes, in order to solve the problem of tube collapsing caused by the capillary forces in the final drying process. We have successfully fabricated damage-free single-turn nanotubes with ultra-thin walls (lesser than 3 nm)…
Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchHeat Transfer and Optimization
Maria Bercea、Maria Cazacu、Bernhard Wolf2003-07-01Macromolecular Chemistry and Physics
Abstract This is the first of two parts investigating the Flory‐Huggins interaction parameter, χ , as a function of composition and chain length. Part 1 encompasses experimental and theoretical work. The former comprises the synthesis of poly(dimethylsiloxane)s with different molar mass and the measurements of their s…
Polymer crystallization and propertiesChemical Thermodynamics and Molecular StructureAdsorption, diffusion, and thermodynamic properties of materials
Jordan E. Massad、Ralph C. Smith2003-07-01Journal of Intelligent Material Systems and Structures
We develop a model that quantifies constitutive nonlinearities and hysteresis inherent to ferroelastic compounds, with emphasis placed on shape memory alloys. We formulate the model in two steps. First, we use the Landau theory of phase transitions to characterize the effective Gibbs free energy for single-crystal and…
Shape Memory Alloy TransformationsSolidification and crystal growth phenomenaMagnetic Properties and Applications
Hans‐Joachim Freund、Jörg Libuda、M. Bäumer 等 5 位作者2003-07-01The Chemical Record
Abstract More than activity, selectivity of catalytic reactions is the focus of research in the 21 st century. We review studies on model systems that address the issue of directing a catalytic reaction on disperse metal catalysts by controlling the specific surface site. Three examples are explored: methanol dehydrog…
Catalytic Processes in Materials ScienceCatalysts for Methane ReformingCatalysis and Oxidation Reactions
Limei Duan、Cheng‐Ling Pan、Ji‐Qing Xu 等 6 位作者2003-07-01European Journal of Inorganic Chemistry
Abstract The novel two‐ and three‐dimensional solid materials [Cu(en) 2 (H 2 O)]{PMo VI 8 V IV 6 O 42 [Cu(en) 2 ][Cu 0.5 (en)] 3 }·5.5H 2 O and H 3 {V V Mo VI 8 V IV 6 O 42 [Cu(en) 2 ] 4 }[MoO 4 ] 2 ·14H 2 O (en = ethylenediamine) have been hydrothermally assembled and structurally characterized. Both networks are bas…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry
E. C. Berg、Mark Roberts、Ted Simpson2003-07-01IEEE Transactions on Aerospace and Electronic Systems
The VLF transmitting system in Cutler, ME currently broadcasts at one frequency through a two-element antenna system. This study investigates simultaneous operation at 24.0 and 17.8 kHz. Detailed nonlinear PSPICE models were generated for the system including the amplifier triodes, saturable dynamic-tuning reactors, a…
Power Systems Fault DetectionMagnetic Properties and ApplicationsVibration and Dynamic Analysis
Karen Bybee2003-07-01Journal of Petroleum Technology
This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 82260, "Matrix Acid Stimulation - A Review of the State of the Art," by Phil Rae, SPE, and Gino di Lullo, BJ Services Co., prepared for the 2003 SPE European Formation Damage Conference, The Hague, 13-14 May.
High-Velocity Impact and Material BehaviorIndustrial Technology and Control Systems
Е. Л. Белоконева、T. A. Borisova、О. В. Димитрова2003-07-01Crystallography Reports
A new rubidium pentaborate is synthesized under hydrothermal conditions. Its crystal structure is studied by the heavy-atom method without any a priori knowledge of chemical formula. The chemical formula is Rb[B5O6(OH)4] · 0.5H2O, sp. gr. $$\bar P1$$ , lattice parameters a = 7.679(4) Å, b = 9.253(6) Å, c = 12.053(9) Å…
Crystal Structures and PropertiesSolid-state spectroscopy and crystallographyX-ray Diffraction in Crystallography
Jae‐Hee Han、Tae Young Lee、Ji‐Beom Yoo 等 8 位作者2003-07-01Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena
Chemical species during growth of carbon nanotubes (CNTs) in direct current-plasma-enhanced chemical vapor deposition were studied in detail using C3H4–NH3 and CO–NH3 mixtures through optical emission spectroscopy. In the C3H4–NH3 system, the relative intensities of CN (388.3 nm) and CH (431.4 nm) decreased and that o…
Carbon Nanotubes in CompositesGraphene research and applicationsDiamond and Carbon-based Materials Research
R. N. Kyutt、A. M. Danishevskiı̆、É. A. Smorgonskaya 等 4 位作者2003-07-01Semiconductors
X-raying is used to study the structure of nanoporous carbon particles produced from carbides of various materials (SiC, TiC, Mo2C, and B4C) by chemical removal of carbide-forming elements. The X-ray diffraction patterns exhibit reflections in the double reflection angle ranges 2θ=23°–26° and 42°–44°. An analysis of t…
Diamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials ResearchAdvanced materials and composites
R. F. T. Stepto、J.I. Cail、D. J. R. Taylor 等 5 位作者2003-07-01Macromolecular Symposia
Abstract Two areas of networks modelling are described. The first is concerned with the application of a Monte‐Carlo (MC) algorithm to account fully for loop formation in RA 2 + R′B 3 and RA 2 + R′B 4 polymerisations. The resulting interpretation of experimental elastic moduli of HDI‐based polyurethane (PU) networks p…
Polymer Nanocomposites and PropertiesPolymer composites and self-healing
Takashi YOKOYAMA、K. Ogawa2003-07-01Welding International
(2003). Impact tensile properties of 6061 aluminium alloy to SUS 304 stainless steel friction-welded butt joints. Welding International: Vol. 17, No. 7, pp. 514-523.
Fatigue and fracture mechanicsHigh-Velocity Impact and Material BehaviorStructural Response to Dynamic Loads
Márcio Nele、João B. P. Soares2003-07-01Macromolecular Theory and Simulations
Abstract Olefinic thermoplastic elastomers can be prepared by incorporating semi‐crystalline macromonomers (e.g. isotactic or syndiotactic poly(propylene), high‐density polyethylene) onto amorphous backbones (e.g. atactic poly(propylene), ethylene/ α ‐olefin copolymers). The macromonomer incorporation reaction can be…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Alessandro Bencini、Andréa Caneschi、Andrea Dei 等 8 位作者2003-07-01Comptes Rendus Chimie
The development of the chemistry of transition metal complexes formed by o -semiquinonato radical ligands has provided a useful topic for learning how to use chemical methods for obtaining systems with predetermined magnetic properties. Similar complexes can be used as building blocks for assembling magnetically coupl…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
María Julia Yañez、Silvia E. Barbosa2003-07-01Microscopy Research and Technique
Scanning electron microscopy (SEM) images of polymer blends followed by digital image analysis is a rapid and easy method for the measurement of particle size and dispersion. The particle size determination is done with appropriate off-line image analysis software. However, it is necessary to understand how machine pa…
Corrosion Behavior and InhibitionElectron and X-Ray Spectroscopy TechniquesSurface Roughness and Optical Measurements
Milena Žiberna Šujica、Majda Sfiligoj Smole2003-07-01Journal of Applied Polymer Science
Abstract The correlation between the fiber structure and mechanical properties of two different poly(ethylene terephthalate) fiber types, that is, wool and cotton types produced by three producers, was studied. Fiber structure was determined using different analytical methods. Significant differences in the suprastruc…
Advanced Sensor and Energy Harvesting MaterialsTextile materials and evaluationsMaterial Properties and Processing