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Molecular dynamics study of the mechanical characteristics of Ni/Cu bilayer using nanoindentation

Muhammad Imran、Fayyaz Hussain、M.A. Rashid 等 4 位作者2012-12-01Chinese Physics B

In the present work, a three-dimensional molecular dynamics simulation is carried out to perform the nanoindentation experiment on Ni single crystal. The substrate indenter system is modeled using hybrid interatomic potentials including the many-body potential embedded atom method (EAM), and two-body morse potential.…

Microstructure and mechanical propertiesMetal and Thin Film MechanicsCopper Interconnects and Reliability

Removal of Polyvinylpyrrolidone from Wastewater Using Different Methods

Markéta Julinová、J. Kupec、Josef Houser 等 7 位作者2012-12-01Water Environment Research

Polyvinylpyrrolidone (PVP) is a frequently used polymer in the pharmaceutical and foodstuff industries. Because it is not subject to metabolic changes and is virtually nondegradable, trace concentrations of PVP are often found in community wastewaters. The literature finds that the partial removal of PVP in wastewater…

Analytical chemistry methods developmentEnzyme Catalysis and Immobilizationbiodegradable polymer synthesis and properties

COMPOSITIONAL AND STRUCTURAL VARIATIONS IN COLUMBITE-GROUP MINERALS FROM GRANITIC PEGMATITES OF THE BRUNSWICK AND OXFORD FIELDS, MAINE: DIFFERENTIAL TRENDS IN F-POOR AND F-RICH ENVIRONMENTS

Michael A. Wise、Carl A. Francis、P. Cerny2012-12-01The Canadian Mineralogist

The Coastal Lithotectonic Block of the Brunswick pegmatite field and the Central Maine Synclinorium of the Oxford pegmatite field, in Maine, are intruded by numerous rare-element granitic pegmatites that carry columbite-group minerals (CGM) as the principal (Nb,Ta)-bearing phases. Generally, the CGM from Maine are hos…

Geological and Geochemical AnalysisCrystal Structures and PropertiesGeochemistry and Elemental Analysis

Impedance Bandwidth and Gain Improvement for Microstrip Antenna Using Metamaterials

Han Xiong、Jing-Song Hong、Yuehong Peng2012-12-01Brno University of Technology Digital Library (Brno University of Technology)

An improved ultra-wideband (UWB) and high gain rectangular antenna is specifically designed in this paper using planar-patterned metamaterial concepts. The antenna has isolated triangle gaps and crossed gaps etched on the metal patch and ground plane, respectively. By changing the pattern on the ground, the impedance…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Physical properties of CdTe:Cu films grown at low temperature by pulsed laser deposition

F. de Moure‐Flores、J.G. Quiñones-Galván、A. Guillén-Cervantes 等 12 位作者2012-12-01Journal of Applied Physics

CdTe:Cu films were grown by pulsed laser deposition on Corning glass slides at a substrate temperature of 300 °C. The thin films were grown using CdTe and Cu2Te powders, varying the Cu2Te concentration from 3 to 10 wt. %. The structural, compositional, optical, and electrical properties were analyzed as a function of…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsAdvanced Semiconductor Detectors and Materials

Facet effect of copper(I) sulfide nanocrystals on photoelectrochemical properties

Yecheng Li、Lei Zhang、Jimmy C. Yu 等 4 位作者2012-12-01Progress in Natural Science Materials International

14-facets polyhedra chalcocite Cu2S nanocrystals were synthesized by a solvothermal method. It was found that the presence of trio-n-octylphosphine during the synthesis was essential for the exposure of unconventional {110} faces. Results from photoelectrochemical measurements indicated that the polyhedra bounded by {…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications

L-band passively harmonic mode-locked fiber laser based on a graphene saturable absorber

Juan Du、S M Zhang、H F Li 等 6 位作者2012-12-01Laser Physics Letters

We have proposed and demonstrated an L-band passively harmonic mode-locked fiber laser based on a graphene saturable absorber (SA). By adjusting the pump power and the polarization controller, we have experimentally observed L-band fundamental and harmonic mode-locked optical pulses. The fundamental optical pulse has…

Diamond and Carbon-based Materials ResearchLaser-Matter Interactions and ApplicationsAdvanced Fiber Laser Technologies

Mechanical and Tribological Characterization of TiB2 Thin Films

F.J.G. Silva、Rafaela Casais、R.P. Martinho 等 4 位作者2012-12-01Journal of Nanoscience and Nanotechnology

Titanium Diboride (TiB2) presents high mechanical and physical properties. Some wear studies were also carried out in order to evaluate its tribological properties. One of the most popular wear tests for thin films is the ball-cratering configuration. This work was focused on the study of the tribological properties o…

Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research

Controllable evaporation of cesium from a dispenser oven

U. Fantz、R. Friedl、M. Fröschle2012-12-01Review of Scientific Instruments

This instrument allows controlled evaporation of the alkali metal cesium over a wide range of evaporation rates. The oven has three unique features. The first is an alkali metal reservoir that uses a dispenser as a cesium source. The heating current of the dispenser controls the evaporation rate allowing generation of…

Atomic and Molecular PhysicsFusion materials and technologiesParticle accelerators and beam dynamics

Transformer Electrical Insulation [Editorial]

Waldemar Ziomek2012-12-01IEEE Transactions on Dielectrics and Electrical Insulation

This Special Issue of Transactions on Dielectrics and Electrical Insulation is dedicated to transformer insulation. The transformer is a very essential apparatus in an electric power system and its reliability is of utmost importance as a transformer failure results in a very costly and difficult to predict interrupti…

High voltage insulation and dielectric phenomenaLightning and Electromagnetic PhenomenaPower Transformer Diagnostics and Insulation

How to Enhance Efficiency and Accuracy of the Over-Deterministic Method Used for Determination of the Coefficients of the Higher-Order Terms in Williams Expansion

Lucie Šestáková2012-12-01Applied Mechanics and Materials

Using higher-order terms of the Williams expansion is necessary for assessment of fracture behavior of quasi-brittle materials. Multi-parameter fracture mechanics enables more accurate determination of the stress/displacement field even in a larger distance from the crack tip, thus the extended zone with non-elastic b…

Fatigue and fracture mechanicsNumerical methods in engineeringMaterial Properties and Failure Mechanisms

Desorption of Cs+ Ions Intercalated in Vermiculite Clay through Cation Exchange with Mg2+ Ions

Kazuya Morimoto、Toshihiro Kogure、Kenji Tamura 等 6 位作者2012-12-01Chemistry Letters

Abstract Cesium ions (Cs+) strongly adsorbed in vermiculite clay (Verm) were efficiently desorbed by reacting with magnesium ions (Mg2+). 70–90% removal of adsorbed Cs+ ions was achieved when Verm loaded with 0.1–100 µmol g−1 Cs+ (corresponding to 0.016–16% of the saturation amount) was mixed with 3.0 mol L−1 aqueous…

Radioactive contamination and transferNuclear materials and radiation effectsChemical Synthesis and Characterization

Dehydrogenation of propane with CO 2 – a new green process for propene and synthesis gas production

Piotr Michorczyk、Kamila Zeńczak、Rafał Niekurzak 等 4 位作者2012-12-01Green Sciences

Abstract Dehydrogenation of propane in the presence of CO 2 was considered as an alternative to commercial dehydrogenation pathway of obtaining propene and the new sources of synthesis gas. Based on thermodynamic calculations and a catalytic tests it was shown that by controlling CO 2 concentration in the feed the mol…

Catalytic Processes in Materials SciencePhase Equilibria and ThermodynamicsCatalysis and Oxidation Reactions

Pattern recognition receptors and their role in invasive aspergillosis

Mark S. Gresnigt、Mihai G. Netea、Frank L. van de Veerdonk2012-12-01Annals of the New York Academy of Sciences

Pattern recognition receptors (PRRs) are germline receptors that recognize conserved structures on microorganisms. Several PRRs have been identified in the recent years that are involved in the immune response against Aspergillus fumigatus. The role of PRRs in invasive pulmonary aspergillosis becomes especially appare…

Antifungal resistance and susceptibilityPhytochemistry and Bioactive CompoundsInfectious Diseases and Mycology

Co-delivery of docetaxel and endostatin by a biodegradable nanoparticle for the synergistic treatment of cervical cancer

Bo Qiu、Minghui Ji、Xiaosong Song 等 10 位作者2012-12-01Nanoscale Research Letters

Cervical cancer remains a major problem in women's health worldwide. In this research, a novel biodegradable d-α-tocopheryl polyethylene glycol 1000 succinate-b-poly(ε-caprolactone-ran-glycolide) (TPGS-b-(PCL-ran-PGA)) nanoparticle (NP) was developed as a co-delivery system of docetaxel and endostatin for the synergis…

Nanoparticle-Based Drug DeliveryAngiogenesis and VEGF in CancerNanoplatforms for cancer theranostics

Performance and reliability improvement in SiC power MOSFETs by implementing AlON high-k gate dielectrics

Takuji Hosoi、Shuji Azumo、Yusaku Kashiwagi 等 12 位作者2012-12-01OpenAlex

We have developed AlON high-k gate dielectric technology that can be easily implemented into both planar and trench SiC-based MOSFETs. On the basis of electrical characterization and numerical simulation, the thickness ratio of the AlON layer to the SiO2interlayer and nitrogen content in AlON film were carefully optim…

Silicon Carbide Semiconductor TechnologiesSemiconductor materials and devicesCopper Interconnects and Reliability

Minimally invasive cell-seeded biomaterial systems for injectable/epicardial implantation in ischemic heart disease

R. Ravichandran、Jayarama Reddy Venugopal、Sundarrajan 等 5 位作者2012-12-01International Journal of Nanomedicine

Myocardial infarction (MI) is characterized by heart-wall thinning, myocyte slippage, and ventricular dilation. The injury to the heart-wall muscle after MI is permanent, as after an abundant cell loss the myocardial tissue lacks the intrinsic capability to regenerate. New therapeutics are required for functional impr…

Electrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative MedicineCardiac Structural Anomalies and Repair

Preparation and Characterization of Tetragonal Zirconium Oxide Nanocrystals from Isophthalic Acid-Zirconium(IV) Nanocomposite As a New Precursor

Maryam Ranjbar、Mohammad Yousefi、Mahboobeh Lahooti 等 4 位作者2012-12-01International journal of nanoscience and nanotechnology

In this study, isophthalic acid-zirconium(IV) nanocomposite has been prepared from zirconyl nitrate pentahydrate and potassium iodide, with isophthalic acid, (C8H6O4=Benzene-1,3-dicarboxylic acid) as a ligand, via sonochemical method in ethylene glycol and methanol as solvents. The crystalline tetragonal ZrO2 has been…

Inorganic and Organometallic ChemistryChemical Synthesis and ReactionsPolymer Synthesis and Characterization

A preliminary investigation on kapok/polypropylene nonwoven composite for sound absorption

Veerakumar Arumugam、Nanocomposites V. Selvakumar2012-12-01OpenAlex

The use of kapok fibre with polypropylene fibre for the development of sound absorptive nonwoven materials has been explored. Three different blend ratios of kapok and polypropylene fibres, namely 30:70, 40:60 and 50:50 have been used. The composites are characterized for their physical properties, namely thickness, d…

Natural Fiber Reinforced CompositesAcoustic Wave Phenomena ResearchVehicle Noise and Vibration Control

The status of MCU-5

Н. И. Алексеев、S.N. Bolshagin、E. A. Gomin 等 14 位作者2012-12-01Physics of Atomic Nuclei

The software developed within the framework of the MCU project which implements the Monte Carlo method for solving the transport equations for various kinds of radiation is widely used for calculating nuclear reactors of different types. The final version of MCU-5 is described. The developed libraries of constants are…

Nuclear reactor physics and engineeringNuclear Materials and PropertiesGraphite, nuclear technology, radiation studies