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Finite Difference Time-Domain Modelling of Metamaterials: GPU Implementation of Cylindrical Cloak

Asadullah Dawood2013-08-03Advanced Electromagnetics

Finite difference time-domain (FDTD) technique can be used to model metamaterials by treating them as dispersive material. Drude or Lorentz model can be incorporated into the standard FDTD algorithm for modelling negative permittivity and permeability. FDTD algorithm is readily parallelisable and can take advantage of…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Effect of temperature on the transconductance of AlGaN/GaN high electron mobility transistors (HEMT)

Rajab Yahyazadeh、Zahra Hashempour、Ovese Marofi2013-08-03International Journal of Academic Research

An analytical-numerical model for the electronic current of two dimensional quantum well AlGaN/GaN in high electron mobility transistors has been developed in this paper that is capable of accurately predicting the effect of temperature on the electronic current of two dimensional quantum well and transconductance . S…

Semiconductor Quantum Structures and DevicesGaN-based semiconductor devices and materialsGa2O3 and related materials

Pharmacokinetics and Biodistribution of 99mTc N-MPO in Healthy Human Volunteers

Shi Gao、Guoqing Zhao、Qiang Wen 等 8 位作者2013-08-03Clinical Nuclear Medicine

PURPOSE: Tc N-MPO ([Tc N(MPO)(PNP5)]: HMPO = 2-mercaptopyridine N-oxide, and PNP5 = N-ethoxyethyl-N,N-bis[2-(bis(3-methoxypropyl)phosphino)ethyl]amine) is a new Tc radiotracer useful for myocardial perfusion imaging. This study was designed to determine its pharmacokinetics and biodistribution in healthy volunteers. P…

Lanthanide and Transition Metal ComplexesRadiopharmaceutical Chemistry and ApplicationsMedical Imaging and Pathology Studies

Comparison of Nerve, Vessel, and Cartilage Grafts in Promoting Peripheral Nerve Regeneration

Cemal Frat、Ylmaz Geyik、Ahmet Aytekın 等 7 位作者2013-08-03Annals of Plastic Surgery

Peripheral nerve injury primarily occurs due to trauma as well as factors such as tumors, inflammatory diseases, congenital deformities, infections, and surgical interventions. The surgical procedure to be performed as treatment depends on the etiology, type of injury, and the anatomic region. The goal of treatment is…

Nerve injury and regenerationElectrospun Nanofibers in Biomedical ApplicationsNerve Injury and Rehabilitation

Polymer Micelle Assisted Transport and Delivery of Model Hydrophilic Components inside a Biological Lipid Vesicle: A Coarse-Grain Simulation Study

Goundla Srinivas、Ram Mohan、Ajit D. Kelkar2013-08-03The Journal of Physical Chemistry B

Understanding drug transportation and delivery mechanism from a molecular viewpoint is essential to find better treatment pathways. Despite the fact that many significant drugs such as anticancer doxorubicin and mitoxantrone are predominantly hydrophilic, an efficient methodology to deliver hydrophilic drug components…

Advanced Polymer Synthesis and CharacterizationLipid Membrane Structure and BehaviorPolymer Surface Interaction Studies

New Family of Tungstate-Responsive Transcriptional Regulators in Sulfate-Reducing Bacteria

Alexey E. Kazakov、Lara Rajeev、Eric G. Luning 等 11 位作者2013-08-03Journal of Bacteriology

The trace elements molybdenum and tungsten are essential components of cofactors of many metalloenzymes. However, in sulfate-reducing bacteria, high concentrations of molybdate and tungstate oxyanions inhibit growth, thus requiring the tight regulation of their homeostasis. By a combination of bioinformatic and experi…

Corrosion Behavior and InhibitionChromium effects and bioremediationChemical Analysis and Environmental Impact

Control of postharvest grey mould decay of nectarine by tea polyphenol combined with tea saponin

Xiaoping Yang、Xiaodong Jiang、J.J. Chen 等 4 位作者2013-08-03Letters in Applied Microbiology

UNLABELLED: The control efficacy of tea polyphenol (TP) in combination with tea saponin (TS) against nectarine grey mould decay caused by Botrytis cinerea and the underlying mechanism were investigated. The in vitro experiments showed that both TP and TS inhibited the mycelial growth in a dose-dependent manner, and th…

Postharvest Quality and Shelf Life ManagementNanocomposite Films for Food PackagingTea Polyphenols and Effects

Cell division, one-carbon metabolism and methionine synthesis in a metK-deficient Escherichia coli mutant, and a role for MmuM

Ziad W. El‐Hajj、Rodrigo Reyes‐Lamothe、E. B. Newman2013-08-03Microbiology

An E. coli K-12 mutant deficient in S-adenosylmethionine (SAM) synthesis, i.e ΔmetK, but expressing a rickettsial SAM transporter, can grow in glucose minimal medium if provided with both SAM and methionine. It uses the externally provided (R)-enantiomer of SAM as methyl donor to produce most but not all of its methio…

Bacterial Genetics and BiotechnologyEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism

Rayleigh waves in isotropic microstretch thermoelastic diffusion solid half space

Rajneesh Kumar、Sanjeev Ahuja、S. K. Garg2013-08-03Latin American Journal of Solids and Structures

This paper is devoted to the study of propagation of Rayleigh waves in a homogeneous isotropic microstretch generalized thermoelastic diffusion solid half-space. Secular equations in mathematical conditions for Rayleigh wave propagation are derived for stress free, insulated/impermeable and isothermal/isoconcentrated…

Thermoelastic and Magnetoelastic PhenomenaNonlocal and gradient elasticity in micro/nano structuresElasticity and Wave Propagation

Exploring the Biosynthesis of Unsaturated Fatty Acids in Bacillus cereus ATCC 14579 and Functional Characterization of Novel Acyl-Lipid Desaturases

Lorena Chazarreta Cifré、Mariana Alemany、Diego de Mendoza 等 4 位作者2013-08-03Applied and Environmental Microbiology

At low temperatures, Bacillus cereus synthesizes large amounts of unsaturated fatty acids (UFAs) with double bonds in positions Δ5 and Δ10, as well as Δ5,10 diunsaturated fatty acids. Through sequence homology searches, we identified two open reading frames (ORFs) encoding a putative Δ5 desaturase and a fatty acid acy…

RNA and protein synthesis mechanismsMass Spectrometry Techniques and ApplicationsEnzyme Structure and Function

Dielectric Breakdown of Polycrystalline Alumina: A Weakest‐Link Failure Analysis

Benjamin Block、Young‐Jin Kim、Dinesh K. Shetty2013-08-03Journal of the American Ceramic Society

The effects of varying electrode geometry (ball and ring) and size (radius), dielectric liquid (castor oil and Diala ® oil), and specimen thickness on the dielectric breakdown of a commercial‐grade alumina were investigated. The breakdown strength was expressed in terms of the maximum electric field in the ceramic cal…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesCopper Interconnects and Reliability

Free vibration response of a multilayer smart hybrid composite plate with embedded SMA wires

K. Malekzadeh、A. Mozafari、Faramarz Ashenai Ghasemi2013-08-03Latin American Journal of Solids and Structures

In this paper, free vibration response of a hybrid composite plate was studied. Effects of some geometrical, physical and material parameters on response of the composite plates embedded with shape memory alloy (SMA) wires were investigated, which have not been reported in the literature thus far. Some of these parame…

Composite Structure Analysis and OptimizationShape Memory Alloy TransformationsStructural Engineering and Vibration Analysis

Lithium Thiophosphate Glasses and Glass–Ceramics as Solid Electrolytes: Processing, Microstructure, and Properties

Seth S. Berbano、Mehdi Mirsaneh、Michael T. Lanagan 等 4 位作者2013-08-03International Journal of Applied Glass Science

Lithium solid electrolytes are of major interest for solid‐state batteries and electrochemical capacitors (ECs). Currently, the material selection space of liquid electrolytes is dominated by lithium salts paired with organics. Improved safety, as well as the need for higher temperature and high voltage operation, ope…

Advancements in Battery MaterialsFerroelectric and Piezoelectric MaterialsAdvanced Battery Materials and Technologies

Dynamic Response of Steel Columns Subjected to Blast Loading

Amr A. Nassr、A. Ghani Razaqpur、Michael J. Tait 等 5 位作者2013-08-03Journal of Structural Engineering

In this study, 13 typical wide-flange steel columns, each carrying an axial load equal to 25% of its axial capacity, are field tested using live explosives, involving charge size of 50 to 250 kg of ammonium nitrate/fuel oil (ANFO) and ground stand-off distance of 7.0 to 10.3 m. The reflected pressure time histories, t…

High-Velocity Impact and Material BehaviorStructural Response to Dynamic LoadsFire effects on concrete materials

Enhanced Oral Delivery of Paclitaxel Using Acetylcysteine Functionalized Chitosan-Vitamin E Succinate Nanomicelles Based on a Mucus Bioadhesion and Penetration Mechanism

He Lian、Tianhong Zhang、Jin Sun 等 16 位作者2013-08-03Molecular Pharmaceutics

In addition to being a physiological protective barrier, the gastrointestinal mucosal membrane is also a primary obstacle that hinders the oral absorption of many therapeutic compounds, especially drugs with a poor permeability. In order to resolve this impasse, we have designed multifunctional nanomicelles based on t…

Nanoparticle-Based Drug DeliveryDrug Solubulity and Delivery SystemsAdvanced Drug Delivery Systems

Carborane-Based Metal–Organic Framework with High Methane and Hydrogen Storage Capacities

Robert D. Kennedy、Vaiva Krungleviciute、Daniel J. Clingerman 等 12 位作者2013-08-03Chemistry of Materials

A Cu–carborane-based metal–organic framework (MOF), NU-135, which contains a quasi-spherical para -carborane moiety, has been synthesized and characterized. NU-135 exhibits a pore volume of 1.02 cm 3 /g and a gravimetric BET surface area of ca. 2600 m 2 /g, and thus represents the first highly porous carborane-based M…

Metal-Organic Frameworks: Synthesis and ApplicationsMachine Learning in Materials ScienceBoron Compounds in Chemistry

The synergistic action of accessory enzymes enhances the hydrolytic potential of a “cellulase mixture” but is highly substrate specific

Jinguang Hu、Valdeir Arantes、Amadeus Pribowo 等 4 位作者2013-08-03Biotechnology for Biofuels

BACKGROUND: Currently, the amount of protein/enzyme required to achieve effective cellulose hydrolysis is still too high. One way to reduce the amount of protein/enzyme required is to formulate a more efficient enzyme cocktail by adding so-called accessory enzymes such as xylanase, lytic polysaccharide monooxygenase (…

Biofuel production and bioconversionAdvanced Cellulose Research StudiesPolysaccharides and Plant Cell Walls

Biocompatible Pillararene-Assembly-Based Carriers for Dual Bioimaging

Huacheng Zhang、Xing Ma、Kim Truc Nguyen 等 4 位作者2013-08-03ACS Nano

Present research provides a successful example to use biocompatible pillararene-based assemblies for delivering mixed dyes in dual bioimaging. A series of tadpole-like and bola amphiphilic pillararenes 1-4 were synthesized by selectively employing water-soluble ethylene glycols and hydrophobic alkyl units as the start…

Supramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsSupramolecular Self-Assembly in Materials

Investigation of the Pulmonary Bioactivity of Double-Walled Carbon Nanotubes

Tina M. Sager、Michael W. Wolfarth、Lori Battelli 等 10 位作者2013-08-03Journal of Toxicology and Environmental Health

Double-walled carbon nanotubes (DWCNT) are a rather new and unexplored variety of carbon nanotubes. Previously conducted studies established that exposure to a variety of carbon nanotubes produced lung inflammation and fibrosis in mice after pharyngeal aspiration. However, the bioactivity of double-walled carbon nanot…

Nanoparticles: synthesis and applicationsAir Quality and Health ImpactsNoise Effects and Management