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Application of numerical evaluation techniques for interpreting frequency response measurements in power transformers

Pradeep M. Nirgude、D. Ashokraju、Arun Rajkumar 等 4 位作者2008-08-22IET Science Measurement & Technology

Frequency response analysis (FRA) is an emerging, powerful non-intrusive condition monitoring and diagnostic tool for verifying the mechanical integrity of power transformers. FRA results are graphical in nature and require trained experts to interpret test results. The work reported discusses numerical-criteria-based…

High voltage insulation and dielectric phenomenaMagnetic Properties and ApplicationsPower Transformer Diagnostics and Insulation

Highly Efficient Nondoped Blue Organic Light-Emitting Diodes Based on Anthracene-Triphenylamine Derivatives

Silu Tao、Yechun Zhou、Chun‐Sing Lee 等 6 位作者2008-08-22The Journal of Physical Chemistry C

Blue light-emitting anthracene derivatives end-capped with triphenylamine for efficient hole transportation have been designed and synthesized using two-step Suzuki coupling reactions. The compounds possess high glass transition temperatures for good thermal stability and strong blue emission in solution. Typical thre…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications

A Series of Lead(II)-Organic Frameworks Based on Pyridyl Carboxylate Acid N-Oxide Derivatives: Syntheses, Structures, and Luminescent Properties

Ya-Hui Zhao、Hong‐Bin Xu、Yao-Mei Fu 等 9 位作者2008-08-22Crystal Growth & Design

Six new lead coordination polymers, namely, [Pb(INO) 2 ]·3H 2 O ( 1 ), [Pb(INO) 2 ·NO 3 ·H 2 O] ( 2 ), [Pb(INO)·Cl] ( 3 ), Na 1.5 [Pb 2 (INO) 5 ]·0.5NO 3 ( 4 ), [Pb 3 (NNO) 4 ·(NO 3 ) 2 ·H 2 O] ( 5 ), and [Pb(NNO) 2 ] ( 6 ), have been prepared by the reaction of Pb(NO 3 ) 2 with isonicotinic acid N-oxide (HINO), or ni…

Metal-Organic Frameworks: Synthesis and ApplicationsCrystal structures of chemical compoundsMagnetism in coordination complexes

Lithographically Patterned Nanowire Electrodeposition: A Method for Patterning Electrically Continuous Metal Nanowires on Dielectrics

Chenxiang Xiang、Sheng-Chin Kung、David K. Taggart 等 8 位作者2008-08-22ACS Nano

Lithographically patterned nanowire electrodeposition (LPNE) is a new method for fabricating polycrystalline metal nanowires using electrodeposition. In LPNE, a sacrificial metal (M(1)=silver or nickel) layer, 5-100 nm in thickness, is first vapor deposited onto a glass, oxidized silicon, or Kapton polymer film. A (+)…

Molecular Junctions and NanostructuresElectrodeposition and Electroless CoatingsAnodic Oxide Films and Nanostructures

Hysteresis in the Physisorption of CO2 and N2 in a Flexible Pillared Layer Nickel Cyanide

Jeffrey T. Culp、Milton R. Smith、Edward W. Bittner 等 4 位作者2008-08-22Journal of the American Chemical Society

Rare hysteretic adsorption/desorption isotherms are reported for CO2 and N2 on a pillared Ni(1,2-bis(4-pyridyl)ethylene)[Ni(CN)4] compound (NiBpeneNiCN). The hysteresis occurs under moderate pressure and at temperatures above the critical temperatures of the respective gases. Powder X-ray diffraction measurements indi…

Metal-Organic Frameworks: Synthesis and ApplicationsOrganic and Molecular Conductors ResearchCovalent Organic Framework Applications

Detection of Melamine in Gluten, Chicken Feed, and Processed Foods Using Surface Enhanced Raman Spectroscopy and HPLC

Mengshi Lin、Lili He、Joseph M. Awika 等 7 位作者2008-08-22Journal of Food Science

Melamine, a nitrogen-rich chemical, was implicated in pet and human food recalls in 2007, which caused enormous economic losses to the food industry. In this study, melamine concentration in wheat gluten, chicken feed, and processed foods (that is, cake and noodle) was measured by surface enhanced Raman spectroscopy (…

Gold and Silver Nanoparticles Synthesis and ApplicationsIdentification and Quantification in FoodMelamine detection and toxicity

Coupling Agent Effect on Magnetic Properties of Functionalized Magnetite-Based Nanoparticles

T. Jean Daou、Jean−Marc Grenèche、G. Pourroy 等 9 位作者2008-08-22Chemistry of Materials

The effect of surface inorganic−organic interactions on magnetic and structural properties of iron oxide magnetic nanoparticles functionalized by lipophilic stilbene molecules has been investigated. The molecules have been grafted through either phosphonate or carboxylate coupling agents. Mössbauer spectra recorded at…

Nanoparticle-Based Drug DeliveryIron oxide chemistry and applicationsCharacterization and Applications of Magnetic Nanoparticles

Coupled Superconducting and Magnetic Order in CeCoIn 5

M. Kenzelmann、Th. Strässle、Ch. Niedermayer 等 11 位作者2008-08-22Science

Strong magnetic fluctuations can provide a coupling mechanism for electrons that leads to unconventional superconductivity. Magnetic order and superconductivity have been found to coexist in a number of magnetically mediated superconductors, but these order parameters generally compete. We report that close to the upp…

Rare-earth and actinide compoundsIron-based superconductors researchInorganic Chemistry and Materials

A first principles comparison of the mechanism and site requirements for the electrocatalytic oxidation of methanol and formic acid over Pt

Matthew Neurock、Michael J. Janik、Andrzej Więckowski2008-08-22Faraday Discussions

First principles density functional theoretical calculations were carried out to examine and compare the reaction paths and ensembles for the electrocatalytic oxidation of methanol and formic acid in the presence of solution and applied electrochemical potential. Methanol proceeds via both direct and indirect pathways…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

Extremely Narrow Plasmon Resonances Based on Diffraction Coupling of Localized Plasmons in Arrays of Metallic Nanoparticles

V. G. Kravets、F. Schedin、A. N. Grigorenko2008-08-22Physical Review Letters

We experimentally demonstrate extremely narrow plasmon resonances with half-width of just several nanometers in regular arrays of metallic nanoparticles. These resonances are observed at Rayleigh's cutoff wavelengths for Wood anomalies and based on diffraction coupling of localized plasmons. We show experimentally tha…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchOrbital Angular Momentum in Optics

Hydrogen evolution on nano-particulate transition metal sulfides

Jacob Bonde、Poul Georg Moses、Thomas F. Jaramillo 等 5 位作者2008-08-22Faraday Discussions

The hydrogen evolution reaction (HER) on carbon supported MoS2 nanoparticles is investigated and compared to findings with previously published work on Au(111) supported MoS2. An investigation into MoS2 oxidation is presented and used to quantify the surface concentration of MoS2. Other metal sulfides with morphologie…

Electrocatalysts for Energy ConversionCatalysis and Hydrodesulfurization StudiesMXene and MAX Phase Materials

Melting behavior and isothermal crystallization kinetics of polypropylene/metallocene‐catalyzed polyethylene elastomer blends

Jianglei Qin、Shiqi Zhang、Zhiting Li2008-08-22Journal of Applied Polymer Science

Abstract Polypropylene (PP)/metallocene‐catalyzed polyethylene elastomer (mPE) blends were prepared in a twin‐screw extruder. The melting behavior, crystallization behavior, and isothermal crystallization kinetics of the blends were studied with differential scanning calorimetry. The results showed that PP and mPE wer…

Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties

Polymers for Packaging and Containers in Food Industry

L.A. Sukhareva、V. S. Yakovlev、О. А. Легонькова2008-08-22OpenAlex

Founded in 1683 in Leiden, the Netherlands, Brill is a leading international academic publisher in the Humanities, Social Sciences, International Law, and Biology. With offices in the Netherlands, Germany, Austria, the USA and Asia, Brill today publishes more than 360 journals and 2,000 new books and reference works e…

Material Properties and Applications

Physical properties of a new iron(III) complex, [3-pmH · 3-pm][Fe(NCS)4(3-pm)2]

Silvia Štefániková、Iveta Ondrejkovičová、M. Koman 等 6 位作者2008-08-22Journal of Coordination Chemistry

The iron(III) compound of formula [3-pmH · 3-pm][Fe(NCS)4(3-pm)2] (3-pm = 3-(hydroxymethyl)pyridine) has been prepared by reaction between iron(III) thiocyanate and 3-(hydroxymethyl)pyridine in ethanol. The characterization was based on elemental analysis, infrared spectra and magnetic measurements. Single crystal X-r…

Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms

Brillouin light scattering study of glassy sorbitol

Beatrice Ruta、G. Monaco、F. Scarponi 等 4 位作者2008-08-22The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics

Brillouin light scattering has been used to investigate the density fluctuations of the fragile glass-former sorbitol in the GHz frequency range and at temperatures between 20 and 294 K. Longitudinal acoustic sound velocity and attenuation data are here reported and discussed. These data are used to test the existence…

Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesGlass properties and applications

Technique for characterization of dimensional changes in slanted holographic gratings by monitoring the angular selectivity profile

Nitesh Pandey、Izabela Naydenova、Suzanne Martin 等 4 位作者2008-08-22Optics Letters

A method has been developed for retrieving the complete angular selectivity profile of transmission holographic gratings in one step. The method is applied to study in real time the shrinkage and changes in the effective optical thickness of a slanted holographic grating recorded in an acrylamide-based photopolymer. I…

Photonic and Optical DevicesPhotorefractive and Nonlinear OpticsOptical Coatings and Gratings

Electronic properties of boron nitride nanocones under the influence of parallel and perpendicular external electric fields

Danilo Oliveira Pedreira、S. Azevedo、M. Machado2008-08-22Physical Review B

Boron-nitride nanocones with $60\ifmmode^\circ\else\textdegree\fi{}$, $120\ifmmode^\circ\else\textdegree\fi{}$, and $240\ifmmode^\circ\else\textdegree\fi{}$ disclination under the influence of parallel and perpendicular external electric fields are studied through first-principles calculations based on the density-fun…

Graphene research and applicationsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research

Surface segregation of interstitial manganese inGa1−xMnxAsstudied by hard x-ray photoemission spectroscopy

Benjamin Schmid、Achim Müller、M. Sing 等 9 位作者2008-08-22Physical Review B

The effects of low-temperature annealing and oxidation of the dilute magnetic semiconductor ${\text{Ga}}_{1\ensuremath{-}x}{\text{Mn}}_{x}\text{As}$ are studied by photoemission spectroscopy in the hard x-ray regime (HAXPES), with special attention to the depth profile of both concentration and chemical state of manga…

ZnO doping and propertiesMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Ordering of Cylindrical Domain of Block Copolymers under Moving Temperature Gradient: Effects of Moving Rate

Kazuki Mita、Hirokazu Tanaka、Kenji Saijo 等 5 位作者2008-08-22Macromolecules

In a previous paper ( Macromolecules 2007, 40, 5923), we reported that a zone heating method, which imposes the moving temperature-gradient (∇ T ) field on ordering process of various melts in general, enabled to control a macroscopic orientation of hexagonally packed cylindrical microdomain structures (hex-cyl) of bl…

Polymer crystallization and propertiesAdvanced Polymer Synthesis and CharacterizationBlock Copolymer Self-Assembly

Study of the electrical properties of calcium‐substituted Li–Zn ferrite

A. A. Sattar、Hesham Elsayed、W. R. Agami2008-08-22physica status solidi (a)

Abstract Temperature and composition dependence of the dc resistivity ( ρ dc ) and thermoelectric power ( α ) of Li 0.3–0.5 x Zn 0.4 Ca x Fe 2.3–0.5 x O 4 ferrites ( x = 0.0, 0.01, 0.02, 0.03 and 0.05), prepared by the standard ceramic method, have been studied. The behavior of both ρ dc and α with temperature support…

Multiferroics and related materialsMagnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materials