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Determining sintering mechanisms and rate ofin situhomogenisation during master alloy sintering of Ti6Al4V

G. Steedman、Stephen F. Corbin2014-09-19Powder Metallurgy

A differential scanning calorimetry (DSC) method was developed capable of measuring the rate of in situ alloying during Al–V master alloy (MA) sintering of Ti6Al4V based on monitoring the characteristics of the β–α phase transformation during cooling from the sintering temperature. The beta transus temperature and tra…

Intermetallics and Advanced Alloy PropertiesTitanium Alloys Microstructure and PropertiesAdvanced materials and composites

Self-Assembled, Aligned ZnO Nanorod Buffer Layers for High-Current-Density, Inverted Organic Photovoltaics

Arun D. Rao、Suresh Karalatti、Tiju Thomas 等 4 位作者2014-09-19ACS Applied Materials & Interfaces

Two different soft-chemical, self-assembly-based solution approaches are employed to grow zinc oxide (ZnO) nanorods with controlled texture. The methods used involve seeding and growth on a substrate. Nanorods with various aspect ratios (1-5) and diameters (15-65 nm) are grown. Obtaining highly oriented rods is determ…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsNanowire Synthesis and Applications

A Radical Intermediate in the Conversion of Pentachlorophenol to Tetrachlorohydroquinone by Sphingobium chlorophenolicum

Johannes Rudolph、Annette H. Erbse、Linda S. Behlen 等 4 位作者2014-09-19Biochemistry

Pentachlorophenol (PCP) hydroxylase, the first enzyme in the pathway for degradation of PCP in Sphingobium chlorophenolicum, is an unusually slow flavin-dependent monooxygenase (k(cat) = 0.02 s⁻¹) that converts PCP to a highly reactive product, tetrachlorobenzoquinone (TCBQ). Using stopped-flow spectroscopy, we have s…

Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

First Acyclic Diene Metathesis Polymerization Under Biphasic Conditions Using a Dicationic Ruthenium Alkylidene: Access to High‐Molecular‐Weight Polymers with Very Low Ruthenium Contamination

Jing Zhao、Dongren Wang、Benjamin Autenrieth 等 4 位作者2014-09-19Macromolecular Rapid Communications

The acyclic diene metathesis (ADMET) polymerization of 6-hydroxy-1,10-undecadiene (M1) and 6-acetoxy-1,10-undecadiene (M2) by the action of two different catalysts, i.e., the second-generation Grubbs-Hoveyda system ([RuCl2(IMesH2)(CH-2-(2-PrO-C6H4)]) (1) and the dicationic ruthenium alkylidene [Ru(DMF)3(IMesH2)(CH-2-(…

Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesSynthetic Organic Chemistry Methods

Cell-surface receptor control that depends on the size of a synthetic equilateral-triangular RNA-protein complex

Yoshihiko Fujita、Rie Furushima、Hirohisa Ohno 等 5 位作者2014-09-19Scientific Reports

A human cell surface displays many complex-structured receptors for receiving extracellular signals to regulate cellular functions. The use of precisely regulated signal-controls of the receptors could have possibilities beyond the current synthetic biology research that begins with the transfection of exogenous molec…

RNA and protein synthesis mechanismsRNA Interference and Gene DeliveryAnodic Oxide Films and Nanostructures

Application of the Transmission Line EIS Model to Fuel Cell Catalyst Layer Durability

O'Rian O. Reid、Farhana S. Saleh、E. Bradley Easton2014-09-19ECS Transactions

We have recently demonstrated that the inclusion of electrochemical impedance spectroscopy (EIS) into accelerated stress tests (AST) can provide a wealth of information about the modes of degradation occurring within a fuel cell catalyst layer. In those reports we have used half-cell techniques to validate the interpr…

Electrocatalysts for Energy ConversionAdvancements in Solid Oxide Fuel CellsFuel Cells and Related Materials

Steric and electronic control over the structural diversity of N-(n-pyridinyl) diphenylphosphinic amides (n = 2 and 4) as difunctional ligands in triphenyltin( iv ) adducts

Khodayar Gholivand、Akram Gholami、Samaneh K. Tizhoush 等 6 位作者2014-09-19RSC Advances

Two triphenyltin(IV) adducts of difunctional ligands, N-(n-pyridinyl) diphenylphosphinic amide (n = 2 and 4), have been synthesized and characterized by 1H, 31P, 119Sn NMR and IR spectroscopy. The spectroscopic properties of the complexes were compared with those of corresponding ligands. The crystal structures of the…

Crystal structures of chemical compoundsThermal and Kinetic AnalysisOrganometallic Compounds Synthesis and Characterization

2D and 3D numerical modeling of experimental magnetization cycles in disks and spheres

S. Farinon、G. Iannone、P. Fabbricatore 等 4 位作者2014-09-19Superconductor Science and Technology

The use of FEM models to simulate the Bean critical state is used in two particular geometries: the disk and the sphere exposed to a uniform magnetic field. Two FEM approaches have been used, the Adaptive Resistivity Algorithm under the ANSYS framework, and the H -Formulation using the COMSOL software. In this work, t…

Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics

Trapping of nanoparticles in a liquid by laser-induced microbubbles

V. I. Yusupov、S. I. Tsypina、В. Н. Баграташвили2014-09-19Laser Physics Letters

Nanoparticles a few nanometers in diameter contained in a colloidal solution can be captured by the surface of a microbubble produced by a well-focused beam of a continuous wave visible laser. The concentration of the nanoparticles on the surface of the microbubble is found to gradually increase during the course of i…

Pickering emulsions and particle stabilizationParticle Dynamics in Fluid FlowsLaser-Ablation Synthesis of Nanoparticles

Spin-orbit spillage as a measure of band inversion in insulators

Jianpeng Liu、David Vanderbilt2014-09-19Physical Review B

We propose a straightforward and effective approach for quantifying the band inversion induced by spin-orbit coupling in band insulators. In this approach we define a quantity as a function of wave vector in the Brillouin zone (BZ) measuring the mismatch, or ``spillage,'' between the occupied states of a system with a…

Topological Materials and PhenomenaAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides

Fracture of a Narrow-Diameter Roxolid Implant: Clinical and Fractographic Considerations

Matthias Karl、Tim Krafft、J. Robert Kelly2014-09-19The International Journal of Oral & Maxillofacial Implants

PURPOSE: Narrow-diameter implants have become popular, as bone augmentation procedures can frequently be avoided. In order to provide implants with sufficient strength, a titanium-zirconium (Ti-Zr) alloy has recently been introduced purportedly showing improved mechanical properties as compared to commercially pure ti…

Bone Tissue Engineering MaterialsDental Implant Techniques and OutcomesTitanium Alloys Microstructure and Properties

Consequences of bulk odd-frequency superconducting states for the classification of Cooper pairs

Yasuhiro Asano、Ya. V. Fominov、Yukio Tanaka2014-09-19Physical Review B

We analyze symmetries and magnetic properties of Cooper pairs appearing as subdominant pairing correlations in inhomogeneous superconductors, on the basis of the quasiclassical Green-function theory. The frequency symmetry, parity, and the type of magnetic response of such subdominant correlations are opposite to thos…

Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics

Upper Bounds on Scattering Processes and Metamaterial-Inspired Structures That Reach Them

Iñigo Liberal、Íñigo Ederra、R. Gonzalo 等 4 位作者2014-09-19IEEE Transactions on Antennas and Propagation

The physical limitations on time-harmonic scattering processes are investigated on the basis of the optical theorem. Previously derived least upper bounds on the total scattering and absorption cross sections are obtained from it in a straightforward manner. In addition, it reveals a practical upper bound for the bist…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Fusing Sorted Random Projections for Robust Texture and Material Classification

Li Liu、Paul Fieguth、Dewen Hu 等 5 位作者2014-09-19IEEE Transactions on Circuits and Systems for Video Technology

This paper presents a conceptually simple, and robust, yet highly effective, approach to both texture classification and material categorization. The proposed system is composed of three components: 1) local, highly discriminative, and robust features based on sorted random projections (RPs), built on the universal an…

Advanced Image and Video Retrieval TechniquesImage Retrieval and Classification TechniquesMachine Learning in Materials Science

Reactivity of Dipyrromethanes towards Azoalkenes: Synthesis of Functionalized Dipyrromethanes, Calix[4]pyrroles, and Bilanes

Susana M. M. Lopes、Américo Lemos、Teresa M. V. D. Pinho e Melo2014-09-19European Journal of Organic Chemistry

Abstract The introduction of side chains at the 1‐ and 9‐positions of dipyrromethanes was explored by using the hetero‐Diels–Alder reaction of azoalkenes. New 5,5′‐diethyldipyrromethanes and 5‐phenyldipyrromethanes that were functionalized with open‐chain hydrazone moieties, including derivatives with tetrazolyl group…

Molecular Sensors and Ion DetectionLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence Chemistry

Lessons learned from the use of 1,977 in-situ bilateral internal mammary arteries: a retrospective study

Siamak Mohammadi、François Dagenais、Pierre Voisine 等 8 位作者2014-09-19Journal of Cardiothoracic Surgery

BACKGROUND: We sought to determine the early and long-term results of in-situ bilateral internal mammary artery (BIMA) grafting in patients undergoing coronary artery bypass graft surgery (CABG). METHODS: Between 1992 and 2011, 16,364 patients underwent primary isolated CABG involving at least one in-situ IMA at our i…

Reconstructive Surgery and Microvascular TechniquesElectrospun Nanofibers in Biomedical ApplicationsCardiac and Coronary Surgery Techniques

Temperature dependence of flexoelectric response in ferroelectric and relaxor polymer thin films

Shashi Poddar、Stephen Ducharme2014-09-19Journal of Applied Physics

We report the temperature dependence of the flexoelectric response in thin films of both ferroelectric and relaxor forms of vinylidene fluoride polymers. The ferroelectric samples were depoled to minimize piezoelectric response by heating them beyond their Curie temperature and then cooling in zero applied electric fi…

Ferroelectric and Piezoelectric MaterialsVibration Control and Rheological FluidsNonlocal and gradient elasticity in micro/nano structures

Hydration Process and Compressive Strength of Slag-CFBC Fly Ash Materials without Portland Cement

Nguyễn Tiến Dũng、Ta‐Peng Chang、Chun-Tao Chen2014-09-19Journal of Materials in Civil Engineering

This study mixed ground granulated blast-furnace slag (S) and circulating fluidized bed combustion (CFBC) fly ash (CA) without any portland cement or alkaline activator to produce an eco-binder, abbreviated as SCA binder. The hydration process, microstructure, and compressive strength of hydrated SCA materials were in…

Concrete and Cement Materials ResearchRecycling and utilization of industrial and municipal waste in materials productionMagnesium Oxide Properties and Applications

Use of soft x-ray diagnostic on the COMPASS tokamak for investigations of sawteeth crash neighborhood and of plasma position using fast inversion methods

M. Imríšek、V. Weinzettl、J. Mlynář 等 10 位作者2014-09-19Review of Scientific Instruments

The soft x-ray diagnostic is suitable for monitoring plasma activity in the tokamak core, e.g., sawtooth instability. Moreover, spatially resolved measurements can provide information about plasma position and shape, which can supplement magnetic measurements. In this contribution, fast algorithms with the potential f…

Magnetic confinement fusion researchLaser-Plasma Interactions and DiagnosticsFusion materials and technologies

Nonequilibrium steady-state response of a nematic liquid crystal under simple shear flow and electric fields

Jaka Fajar Fatriansyah、Yuji Sasaki、Hiroshi Orihara2014-09-19Physical Review E

The effect of a dc electric field on the response of a nematic liquid crystal under shear flow has been investigated by measuring the shear stress response to an ac electric field used as a probe. It was found that both the first- and second-order responses do not vanish at high frequencies, but have constant nonzero…

Material Dynamics and PropertiesNonlinear Dynamics and Pattern FormationAdvanced Thermodynamics and Statistical Mechanics