Materials Literature
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The plasma flat lamp(PFL) is used as light source of LCD backlight system and general lighting systems. This PFL has many advantages over the conventional fluorescent lamps relative to optical performances, energy-savings and so on. The technology development for efficiency enhancement of Plasma Flat Lamp has been goi…
This paper compares the characteristics of a ferrite bonded ring magnets having polar magnetization with those of radially magnetized magnet. The magnetization yoke is investigated to determine the magnetization status of the ring magnet. The surface flux densities of the polarly magnetized ring magnets and those of t…
Artificial neural network (ANN) has emerged as a potential tool for processing many applications because it is capable of recognizing patterns. This study is proposed to apply feed-forward neural network to generate mesh models in finite element method for analysis of iron-core transformer. The results of the proposed…
The design method of the non-contacting feeding system will be shown. In this paper, FEM analysis is used for the design. The iron loss is the key factor of the system design. The core material and frequency should be decided by iron loss. By the method, high efficiency non-contact feeding system can be designed.
PBXN-9, an HMX-formulation, is thermally damaged and thermally decomposed in order to determine the morphological changes and decomposition kinetics that occur in the material after mild to moderate heating. The material and its constituents were decomposed using standard thermal analysis techniques (DSC and TGA) and…
Transparent microspheres can be optically encoded with color core droplets, as shown by S.-H. Kim, J. W. Shim, and S.-M. Yang in their Communication on page 1171 ff. A microfluidic device produces and manipulates double-emulsion droplets containing the desired number of color core droplets with unprecedented controlla…
Abstract The self‐assembly of oxalic acid with metal salts under hydrothermal conditions gave two isostructural 3D lanthanide alkaline earth heterometallic coordination polymers, [Ln2Sr(OX)4(H2O)6·3H2O]n [Ln = Eu (1), Gd (2); OX = oxalate]. Compounds 1 and 2 are 3D coordination frameworks built from 2D lanthanide carb…
Abstract The applications of ceramics are limited by their brittleness. Though the toughness of ceramics can be improved by adding hard and strong toughening agents, their damage tolerance is still poor. Novel concept derives from fish scale is explored and used to design alternative toughening agent. The microstructu…
The isobaric phase diagram for a binary system of liquid crystals is presented. One mixing component is a bent-core mesogen forming a B7 phase and the other one is a nematogenic calamitic compound. The occurring mesophases have been identified by their optical textures as well as by X-ray investigations. The B7 phase…
Carbonated apatite (CHA) coating on chitosan with gradient distribution was achieved by ions assembly at ambient condition in a short period time. Chitosan hydrogel can directly chelate with calcium via amino groups without inducing carboxyl or hydroxyl group previously. The complexation of chitosan with calcium ions…
Abstract Crosslinked α‐methylstyrene and acrylonitrile (MStAN) copolymer particles in a latex form were synthesized by free radical emulsion polymerization. The particles took a spherical shape with an average size of 53.1 nm in a narrow distribution. When filled into styrene‐butadiene rubber (SBR), nitrile‐butadiene…
The influence of armature reaction and air-gap permeance variation on the rotor eddy-current loss in the highspeed tangential-set permanent magnet synchronous generator is analyzed through the multi-domain finite element method. The rotor eddy-current loss and meanwhile the temperature-rise of the rotor can be reduced…
The accuracy of the equivalent circuit parameters of asynchronous motor always abstracts special concern and is also a hot research item for high performance control. Based on the deduced parameter equations, using auto 2fit software, a more accurate numerical solution to the parameter determining through a no-load ex…
An efficient high-throughput method for sequential assignment of backbone l H N and l5 N, atoms in less than a day (using 2-4 2D spectra; total data collection in 4-8 h) has been proposed here. This is based on sequential correlations and specific patterns of peaks around the glycines, alanines, serines/threonines (in…
Recently, the motor eccentricity problem, which can cause vibrations and noise, has become increasingly important due to the growing demand for improved quality of life and work environment. Because the eccentricity problem causes an imbalance of electromagnetic forces, most of the previous research has focused on the…
As a compromise between economy and good performance, this paper adopts the combined system using active power filter (APF) and static var compensator (SVC) to compensate reactive power and harmonic currents simultaneously. The SVC is constructed by fixed capacitor (FC) and thyristor controlled reactor (TCR), and the…
This paper deals with the PM performance evaluations in a pole changing memory motor (PCMM) using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the characteristics evaluation relative to…
Flux-reversal machine (FRM) is a new doubly-salient stator-permanent magnet (PM) machine with flux linkage reversal in the stator concentrated windings. The simple structure makes it cost effective and suitable for mass production. However, there is a notable permanent magnet flux leakage which deteriorates the torque…
We have performed magnetization and 27 Al- and 11 B-NMR measurements of Mg 1- x Al x B 2 with x =0, 0.16, 0.22, 0.30, and 0.45 in both the normal and superconducting (SC) states. In the normal state, the temperature-independent values of 1/ T 1 T of 27 Al and 11 B decrease with increasing x . The 1/ T 1 of 27 Al decre…
The motor performances such as torque characteristics or iron loss are strongly affected by the magnetic properties of electrical steel sheet used. It is found recently that, even in the non-oriented electrical steel sheets, the magnetic characteristics are dependent on the direction of the applied magnetic field, i.e…