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Analytical & Numerical Calculations of S-Parameters in Multilayer DPS-DNG Junctions

Sibel Çimen、Gonca Çakır、Levent Sevgi2009-01-01OpenAlex

Metamaterials (MTM) have recently attracted much attention in electromagnetic engineering. Initial studies have focused on understanding their electromagnetic properties and responses, but applications have also begun to appear in the literature. This paper presents visualization of electromagnetic waves interacting w…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Modeling of electron emission : its physics and novel applications

Lin Wu2009-01-01OpenAlex

Electrons emitted from the surface of a material subjected to heat, electromagnetic radiation and electric field, are respectively known as thermionic emission, photoemission and field emission.In many applications based on electron emission such as vacuum tubes, thermionic energy conversion systems, field emission di…

Carbon Nanotubes in CompositesGyrotron and Vacuum Electronics ResearchAdvanced Materials Characterization Techniques

Inequalities for Single Crystal Tube Growth by Edge-Defined Film-Fed Growth Technique

Štefan Bálint、Agneta M. Bálint2009-01-01Journal of Inequalities and Applications

Journal of Inequalities and Applications is a peer-reviewed open access journal published under the brand SpringerOpen. The aim of this journal is to provide ...

Solidification and crystal growth phenomenaStructural Analysis and OptimizationAdvanced Mathematical Modeling in Engineering

Flows in Films and Over Flippers

van Nierop、Ernst Adriaan2009-01-01OpenAlex

Three topics in fluid mechanics are dealt with in this dissertation, namely (i) reactive spreading and recoil of oil on water, (ii) free film formation theory and experiment, and (iii) how humpback whale flippers delay stall. Reactive spreading of an oil droplet on water is described in Chapter 1. Small amounts of aci…

Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferElectrohydrodynamics and Fluid Dynamics

The effect of aging treatment on the magnetic properties of PtCo alloys

Liu Tao、Wei Li、钢铁研究总院功能材料研究所,北京 1000812009-01-01Acta Physica Sinica

The effect of aging temperature on the magnetic properties has been studied. The magnetic measurement results indicate that the remanence decreases with increasing aging temperature Ta,and the coercivity has a maximum value at Ta=690℃. After the first aging, the degree of ordering increases with Ta, which shows that t…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys

STRUCTURE-PROPERTY STRESS STATE DEPENDENT RELATIONSHIPS UNDER VARYING STRAIN RATES

Matthew T Tucker2009-01-01ProQuest Demo Repository

In this work, the microstructural effects of stress state and strain rate dependent plasticity, damage, and failure of aluminum and magnesium alloys were examined. Several experimental techniques were employed to implement the test data into a physics-based internal state variable plasticity-damage model. Effects aris…

High-Velocity Impact and Material BehaviorStructural Response to Dynamic LoadsMaterial Properties and Failure Mechanisms

A Study on Hydrogen Generation Reactor using NaBH4 and Load Following Ability for Fuel Cell Application

Deaheum Park、Masayoshi Ishida2009-01-01IEEJ Transactions on Power and Energy

NaBH4-Fuel Cell system, which can respond to increasing demands for power in a mobile device, has attracted much attention as an alternative power source for lithium batteries due to the advantages. However, before the system can be of practical use, hydrogen must be efficiently generated from the NaBH4. We have condu…

Fuel Cells and Related MaterialsHydrogen Storage and MaterialsEnergy and Environmental Systems

Synthesis of Thermoelectric SrTiO3 Ceramics by the Polymerized Complex Process and Pulsed Current Heating Method

Mikio Ito2009-01-01Journal of the Japan Society of Powder and Powder Metallurgy

The establishment of rapid synthesis process at a low temperature of thermoelectric SrTiO3 was tried by using the polymerized complex (PC) process and the pulsed current heating (PCH) method. The non-doped and La- or Y- doped SrTiO3 powders could be synthesized by the PC process without precipitation of any second pha…

Advanced Thermoelectric Materials and DevicesThermal properties of materialsThermal Expansion and Ionic Conductivity

Host–Guest interaction of pesticide bifenox with cyclodextrin molecules. An electrochemical study

Magdaléna Hromadová、Romana Sokolová、Lubomı́r Pospı́šil 等 6 位作者2009-01-01Collection of Czechoslovak Chemical Communications

The reduction of nitroaromatic compound bifenox (methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate) was studied in aprotic solvents in the absence or presence of cyclodextrin (CD) molecules of different cavity sizes. βCD and γCD form complexes with bifenox in DMSO with the complex formation constants (5 ± 2) × 102 M–1 [β…

Electrochemical sensors and biosensorsConducting polymers and applicationsElectrochemical Analysis and Applications

Countermeasures against Pattern Formation Phenomena of Thin Sheet Winder by Using Dynamic Absorbers

Takahiro RYU、Kenichiro MATSUZAKI、Atsuo SUEOKA 等 4 位作者2009-01-01Journal of System Design and Dynamics

This paper deals with a countermeasure against pattern formation phenomena generated on thin sheet winder using dynamic absorbers. The thin sheet is widely used as paper, aluminum, etc. Pattern formation phenomena of the wound sheet sometimes occur in operation because of the viscoelastic characteristics of the sheet.…

Textile materials and evaluationsVibration and Dynamic AnalysisMaterial Properties and Processing

Extension of the Simplified Method for the Interaction of Primary and Secondary Stresses

Peter James、D.G. Hooton、Colin Madew 等 5 位作者2009-01-01OpenAlex

The R6 defect assessment procedure, used commonly in the UK nuclear industry to assess the significance of defects in structures, uses the Failure Assessment Diagram to evaluate limiting parameters whilst accounting for the effects of plasticity. The interaction of primary and secondary stress is accounted for within…

Fatigue and fracture mechanicsHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques

Effect of die cavity constraint on foaming behavior and pore morphology of sheet type porous aluminum

Makoto Kobashi、Noriaki Sakamoto、Naoyuki Kanetake2009-01-01Journal of Japan Institute of Light Metals

Foaming behavior of 6061 aluminum sheet-type precursor by free foaming or by foaming in die cavity was examined. Projected area of the precursor during foaming process was recorded by two video cameras to analyze the foaming behavior of both vertical (thickness) and horizontal (in-plane) directions. The free foaming b…

Cellular and Composite StructuresPickering emulsions and particle stabilizationNanoporous metals and alloys

Theory of Compatible Domain Arrangements in Ferroelectric Thin Films

Nien‐Ti Tsou、John E. Huber2009-01-01OpenAlex

Thin films of single crystal ferroelectric material are constrained by their substrate to a fixed state of macroscopic in-plane strain. Domain structures can form to minimize the overall energy of the system by matching the imposed strain conditions in an average sense. We study low-energy equilibrium states of ferroe…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesAdhesion, Friction, and Surface Interactions

Emulsion-Phase Synthesis of Highly Dispersed Cu[sub 2]O Aggregates: From Microspheres, to Flower-Like Cubes, to Octahedra

Guo Gao、Lan Xiang2009-01-01Journal of The Electrochemical Society

We report here a simple emulsion-phase reduction strategy for the one-step synthesis of highly dispersed aggregates from microspheres, to flower-like cubes, to octahedra at . The size and shape of aggregates are controlled by varying the reaction temperature and surfactant concentration. Highly dispersed microspheres…

ZnO doping and propertiesQuantum Dots Synthesis And PropertiesCopper-based nanomaterials and applications

Influence of Impurity Element on Single Phase β-Zn4Sb3 Thermoelectric Materials by Two Stage Heat Treatment

Takashi UEDA、Chinatsu Okamura、Kazuhiro Hasezaki2009-01-01Journal of the Japan Institute of Metals and Materials

Single phase β-Zn4Sb3 was prepared by applying a two-stage heat treatment and the carrier concentration of β-Zn4Sb3 was controlled by doping with doping elements. The undoped and doped samples were prepared by direct melting followed by two-stage heat treatment at 723 and 673 K after solidification of the samples in s…

Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsSemiconductor materials and interfaces

A Thermoeconomic Comparison Between SOFC Hybrid Systems and the Most Worldwide Used Technologies Towards Competitive Innovative Plants

Alessandro Franzoni、Loredana Magistri、O. Tarnowsky 等 4 位作者2009-01-01OpenAlex

This paper investigates options for highly efficient SOFC hybrid systems of different sizes. For this purpose different models of pressurised SOFC hybrids systems have been developed in the framework of the European Project “LARGE SOFC - Towards a Large SOFC Power Plant”. This project, coordinated by VTT Finland, coun…

Advancements in Solid Oxide Fuel CellsCatalysts for Methane ReformingThermodynamic and Exergetic Analyses of Power and Cooling Systems

INFLUENCE OF DISORDER ON A CHIRPED MIRROR BASED ON POROUS SILICON

Jesús Manzanares-Martínez、P. Castro-Garay、Efraín Urrutia-Bañuelos2009-01-01Progress In Electromagnetics Research Letters

We report on the modeling of light reflection in disordered chirped mirrors with a photonic band gap in the visible. The stop band limits have a threshold-like behavior as a function of disorder and sustain a certain amount of disorder before changing. We determine the disorder value that leads to a substantial broade…

Photonic and Optical DevicesPhotonic Crystals and ApplicationsSilicon Nanostructures and Photoluminescence

IRRAS and TPD Investigations of Carbon Monoxide Adsorption on MBE grown Fe on Pt(100)

Toshimasa Wadayama、H. Yoshida、Naoto Todoroki 等 4 位作者2009-01-01e-Journal of Surface Science and Nanotechnology

Infrared reflection absorption spectroscopy (IRRAS) and temperature programmed desorption (TPD) were used to investigate carbon monoxide (CO) adsorption on 0.25-1.0 monolayer (ML)-thick Fe deposited Pt(100) (Fex(x=0.25-1.0ML)/Pt(100)). The cleaned Pt(100) surface shows 5 × 20 reconstruction (Pt(100)-hex). The 1.0-L-CO…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysts for Methane Reforming

Effects of Pre-exsisting Boundaries on Microstructure Obtained by Plasma-nitriding of Fe–18%Cr Alloy

Gorō Miyamoto、Atsushi Yonemoto、Yusuke Tanaka 等 5 位作者2009-01-01ISIJ International

The present authors have studied the plasma-nitriding behavior of Fe–high Cr alloys and reported that ferrite grains are newly formed by holding the strict Σ9 coincide site lattice (CSL) relation with respect to the original ferrite grain [G. Miyamoto et al., Acta Mater. 54 (2006), 4771]. In this study, effects of pre…

Microstructure and mechanical propertiesMetal and Thin Film MechanicsMicrostructure and Mechanical Properties of Steels