Sook‐Kyung Kim、Sathyavelu K. Reddy、Bryant C. Nelson 等 10 位作者2006-12-04Journal of Bacteriology
The gene Rv1885c from the genome of Mycobacterium tuberculosis H37Rv encodes a monofunctional and secreted chorismate mutase (*MtCM) with a 33-amino-acid cleavable signal sequence; hence, it belongs to the *AroQ class of chorismate mutases. Consistent with the heterologously expressed *MtCM having periplasmic destinat…
Bacterial Genetics and BiotechnologyRNA and protein synthesis mechanismsEnzyme Structure and Function
Wujian Miao、Ivan Cole、Aaron K. Neufeld 等 4 位作者2006-12-04Journal of The Electrochemical Society
Corrosion behavior of hard zinc, Al (Galfan), and Al alloy (Zincalume or Galvalume) coated steels was studied using cyclic voltammetry and potential scan/hold technique in the presence of 0.10- over a pH range of 2 to 12. Influence of chloride concentration and electrolyte pH on pitting potential values of the above t…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
Shogo Miyoshi、Tetsuro Furuno、Oravan Sangoanruang 等 5 位作者2006-12-04Journal of The Electrochemical Society
-based oxides were studied as a series of new mixed electronic and oxide-ionic conductors for oxygen permeation membrane. High electronic conductivity was observed for the system and the temperature dependence was of metal-like behavior, i.e., it decreased with elevating temperature. The oxygen permeability of -based…
Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Jie Chen、Yan Li、Jiaxiang Shang 等 4 位作者2006-12-04Applied Physics Letters
Martensitic transformation and phase instability of Ni8+xMn4Ga4−x high-temperature shape memory alloys have been investigated by first principles calculations using the pseudopotentials plane wave method. The tetragonality (the ratio between the lattice parameter c and a) increases with the increasing of Ni content. T…
Shape Memory Alloy TransformationsTitanium Alloys Microstructure and Properties
Z. Wu、Christiaan Richter、L. Menon2006-12-04Journal of The Electrochemical Society
We have carried out a systematic investigation of the anodization procedure in order to determine the exact chemical mechanism of the dissolution process responsible for pore formation in nanoporous alumina templates. We measured the anodization current as a function of time and compared it with the thickness of porou…
Concrete Corrosion and DurabilityAnodic Oxide Films and NanostructuresSmart Materials for Construction
Cheng Fang、E. Foca、Su-Fan Xu 等 5 位作者2006-12-04Journal of The Electrochemical Society
Deep macropores in n-type Si have been completely filled with copper ͑Cu͒.Homogeneous metal deposition inside the deep pores was achieved by means of electroplating using a solution containing only Cu 2 SO 4 mixed with H 2 SO 4 and no additives.Initial nucleation of the Cu deposition was confined to the bottom of the…
Silicon Nanostructures and PhotoluminescenceNanowire Synthesis and ApplicationsSemiconductor materials and interfaces
Antonio B. Fuertes、Pedro Tartaj2006-12-04Small
A sticky combination: Mesoporous carbon–polymer spheres with adjustable magnetic functionality and chemical specificity are derived from nontoxic materials (see FESEM image). An additional advantage of this method is that the pore-size distribution of the materials can be modulated from monomodal to bimodal, which mak…
Supercapacitor Materials and FabricationMesoporous Materials and CatalysisCovalent Organic Framework Applications
Y. Y. Mi、Shijie Wang、J. W. Chai 等 7 位作者2006-12-04Applied Physics Letters
The nitrogen-doping induced changes in optical properties and electronic structures of SrTiO3 films have been investigated by using spectroscopic ellipsometry and x-ray photoemission spectroscopy. Combined with the first-principles calculations, it is found that the localized N 2p states above O 2p states are attribut…
ZnO doping and propertiesSemiconductor materials and devicesElectronic and Structural Properties of Oxides
G. Dolling、Martin Wegener、Achim Schädle 等 5 位作者2006-12-04Applied Physics Letters
By measuring and calculating oblique-incidence transmittance spectra of a negative-index photonic metamaterial layer, the authors infer the in-plane dispersion relation of the magnetization wave. From the geometry and the dispersion shape, the authors conclude that coupling is predominantly via magnetic dipoles for wa…
Metamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsRandom lasers and scattering media
Chun‐Yu Lee、Yau-Te Haung、Wei‐Fang Su 等 4 位作者2006-12-04Applied Physics Letters
The authors report ultraviolet electroluminescence from ZnO nanoparticle-based devices prepared by the phase-segregation technique. The conditions for phase segregation are investigated using confocal microscopy. With proper parameters for phase segregation, the ZnO nanoparticles and N,N′-diphenyl-N,N′-bis(3-methylphe…
ZnO doping and propertiesQuantum Dots Synthesis And PropertiesOrganic Light-Emitting Diodes Research
Wenyi Zhu、Z.-G. Ye2006-12-04Applied Physics Letters
Ceramics of 0.67Bi(Fe1−xTix)O3+x∕2–0.33PbTiO3 (x=0, 0.005, 0.01, 0.02, 0.04) were prepared by solid state reactions, with a relative density of 94%–97%. The dielectric and ferroelectric properties of the ceramics have been significantly improved by means of aliovalent ionic substitution of Ti4+ for Fe3+, which reduces…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsDielectric properties of ceramics
Jason C. Hower、Yi He、Matthew T. Bernards 等 4 位作者2006-12-04The Journal of Chemical Physics
This paper presents a molecular simulation study of the interactions of a protein (lysozyme) with self-assembled monolayers (SAMs) of mannitol and sorbitol terminated alkanethiols in the presence of explicit water molecules and ions. The all-atom simulations were performed to calculate the force generated on the prote…
Lipid Membrane Structure and BehaviorPolymer Surface Interaction StudiesForce Microscopy Techniques and Applications
Julia Sabirova、Manuel Ferrer、Heinrich Lünsdorf 等 8 位作者2006-12-04Journal of Bacteriology
A novel mutant of the marine oil-degrading bacterium Alcanivorax borkumensis SK2, containing a mini-Tn5 transposon disrupting a "tesB-like" acyl-coenzyme A (CoA) thioesterase gene, was found to hyperproduce polyhydroxyalkanoates (PHA), resulting in the extracellular deposition of this biotechnologically important poly…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionMicrobial Metabolic Engineering and Bioproduction
V. Sivakumar、U.V. Varadaraju2006-12-04Journal of The Electrochemical Society
A series of orange–red emitting phosphor compositions have been synthesized and characterized by powder X-ray diffraction (XRD) and photoluminescence. XRD results reveal a phase transition from orthorhombic to pseudocubic structure for . All the compositions show broad charge-transfer band absorption in the near-ultra…
Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsAdvanced Chemical Sensor Technologies
Kunie Ishioka、Muneaki Hase、Masahiro Kitajima 等 4 位作者2006-12-04Applied Physics Letters
The authors report femtosecond dynamics of the coherent optical phonon of single crystal diamond. Sub-10fs, 395nm laser pulses excite 40THz coherent phonons with an extremely small damping rate (0.15ps−1). Linear power dependence of the phonon amplitude under off-resonant excitation condition gives a direct evidence f…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchForce Microscopy Techniques and Applications
Dongdong Jia、Y. Wang、Xianxin Guo 等 6 位作者2006-12-04Journal of The Electrochemical Society
Nanophosphors of (YAG/Ce) were synthesized with a novel salted sol-gel (SSG) method in which a water solution of inorganic salt, yttrium nitrate [ , YNO], was used with a traditional metal alkoxide precursor, aluminum sec-butoxide [ , ASB], in sol-gel synthesis. With the SSG method, a YAG single phase could be obtaine…
Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsSolid State Laser Technologies
Masaya Nogi、Kentaro Abe、Keishin Handa 等 6 位作者2006-12-04Applied Physics Letters
The authors studied acetylation of bacterial cellulose (BC) nanofibers to widen the applications of BC nanocomposites in optoelectronic devices. The slight acetylation of BC nanofibers significantly reduces the hygroscopicity of BC nanocomposites, while maintaining their high optical transparency and thermal stability…
Natural Fiber Reinforced CompositesAdvanced Cellulose Research StudiesElectrospun Nanofibers in Biomedical Applications
Jean‐Michel Barbe、Gabriel Canard、Stéphane Brandès 等 4 位作者2006-12-04Chemistry - A European Journal
Twenty-one hybrid materials incorporating cobalt(III) corrole complexes were synthesized by a sol-gel process or by grafting the metallocorrole onto a mesostructured silica of the SBA-15 type. All the materials show an almost infinite selectivity for carbon monoxide with respect to dinitrogen and dioxygen in the low-p…
Electrochemical sensors and biosensorsMesoporous Materials and CatalysisPorphyrin and Phthalocyanine Chemistry
I. N. Hulea、S. Fratini、H. Xie 等 8 位作者2006-12-04arXiv
In organic field effect transistors (FETs), charges move near the surface of an organic semiconductor, at the interface with a dielectric. In the past, the nature of the microscopic motion of charge carriers -that determines the device performance- has been related to the quality of the organic semiconductor. Recently…
Materials Sciencecond-mat.other
A. R. Pereira、A. R. Moura、W. A. Moura-Melo 等 6 位作者2006-12-04arXiv
How stable vortex-like magnetization in magnetic nanodisks with small aspect ratio ($L/R<<1$) is affected by two antidots is investigated analytically and by Monte Carlo simulations. For suitable ranges of the physical parameters this vortex presents bistable states when pinned around the antidots. The hysteresis loop…
Materials Science