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Application of Level Set Method to the Simulation of Liquid-gas Two-phase Flow During Mold Filling Jing HAOa , Liliang CHEN b, Jianxin ZHOU c State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, China Email: a jing113cn@163.com, b liliangchen@hust.edu.cn, czhoujianxin1975@163.com Keywords: two-phase, mold filling, Level Set, numerical simulation Abstract.
Varahram: Computer Methods in Applied Mechanics and Engineering Vol. 196 (2006), p. 697-713 [13] R.

Such investigations have important applications in future, and will solve many key problems in life science.
Due to their excellent biocompatibility and non-toxicity, hydroxyapatite was widely used in dental composites, bone tissue engineering [1-3] and non-viral gene carrier et al [4].
Material and Methods Hydroxyaptite (HAP) nanoparticles used in this paper were prepared via homogeneous chemical sedimentation reaction in our laboratory according to literature.[11] Briefly, the procedure described here, the nanoparticles were fabricated by adding Ca (H2PO4)2 solution to Ca(OH)2 in water (Ca/P ratio =1.67) at determined speed accompanied by vigorous stirring for 24h.

Army Research Laboratory, Adelphi, MD 20852, USA 2Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA adaniel.b.habersat.civ@mail.mil, bneil@umd.edu, caivars.j.lelis.civ@mail.mil Keywords: SiC MOS, charge trapping, mobile ion, bias instability, drift diffusion, numerical simulation Abstract.
Introduction Understanding and reducing the threshold voltage instability of SiC MOS devices is a key goal for realizing the full benefits of wide bandgap power MOSFETs.
In brief, the Poisson equation is solved in both the semiconductor and the oxide to determine the electric potential ψ as a function of position x based on the distribution of positive charges p and negative charges n – due to free carriers and ionized dopants in the semiconductor and ionic charges in the oxide – as in d2ψdx2=-qϵp-n, (1) where q is the elementary charge and ϵ is the dielectric constant of the material.

Fabrication of Si3N4-TiN Nanocomposites via Various Routes � � Junichi Hojo*, Hironori Kugimoto, Masato Uehara and Naoya Enomoto � Department of Applied Chemistry, Faculty of Engineering, Kyushu University 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan *jhojo@cstf.kyushu-u.ac.jp Keywords: silicon nitride, titanium nitride, nanocomposite, composite powder, in-situ process Abstract.
Introduction Ceramic nanocomposites have been receiving a great attention as new material since Niihara proposed [1].
The design of ceramic composites on nanometer level is the key for creating new functions.

Introduction Direct current (DC) power system is a key part for electrical equipments in power plants and substations.
Damaged batteries pose the risk of hazardous material release and shall be recycled immediately under professional instructions.
Wilson: Auxiliary DC: Control Power System Design for Substations, Protective Relay Engineers, 2007. 60th Annual Conference for Protective Relay Engineers

Introduction One of the more difficult problems facing the engineering community is the gradual degradation of the nation’s civil structures.
Given a dynamical attractor,, two key invariant measures are its dimension and its Lyapunov exponents (LEs).
Material properties are taken to be those of steel, giving a density of ρ = 7850 kg/m3, a Young’s modulus of E = 200 GPa.

(2) For given material constants, the amplitude ratios of reflected and refracted waves depend on the angle of incidence.
Acknowledgments This work was supported by grants (No.60904023) from the National Natural Science Foundation of PRC, the Scientific Research Foundation of Henan University of Science & Technology and the Fund of Young Key Teachers in University of Henan Province.
Structural Engineering and Mechanics,Vol.31(2009), pp.117-135

Study on the Axial Tooth Shape of CRT Slips Faguang Jiang1, a, Zheng Liang1, b, Guanghui Zhao1, c Yonghong Yan2 d and Pan Wang2, e 1 Mechatronic Engineering College, Southwest Petroleum University, Chengdu, 610500, China 2 Baoji Oilfield Machinery Co., LTD, Baoji, 721002, China ajiangfg@126.com, bliangz_2242@126.com, cwy_zgh@yahoo.com.cn, dhys_yyh@bomco.cn, ewp2080@126.com Keywords: Slips, Top Drove, Casing Running Tool, Tooth Shape, Axial.
Combining specific casing, material of casing and depth of well, the stress can be calculated.
Acknowledgments This work is supported by Key Laboratory of Oil and Gas Equipment from Ministry of Education (2006STS03) and Important National Science & Technology Specific Projects (2011ZX 05049-003-003).

Hanani Abd Wahab [5] the key design parameters of the building integrated thermal system were identified and implemented in a TRansient SYstem Simulation (TRNSYS) model thereby validating the results by comparing the simulation in TRNSYS and real experimental results.
System Description The PV panels are made up of mono-crystalline material.
Ji, Comparative experimental study on photovoltaic and thermal solar system under natural circulation of water, Applied Thermal Engineering,31(16) (2011) 3369-3376

Diagnosis of White Spot Defects Drived from Gear Wheel Carbonization and its Corresponding Measures Hongli Liu1, a, Mingxi Liu1, b 1 Electrical Engineering Department, Xi'an Railway Vocational & Technology Institute 33 Ziqiang West Road, Xi’an, China alhongl6306@126.com, bliumingxi130@126.com Keywords: Carburization, White Spot Defect, Carburized-Case Depth, Rigidity, Grinding Abstract: To account for the adverse effects of white spot defects onto the performance of gear wheel, physicochemical properties are studied based on the conducted surface carbonization experiment.
Continuous White Spots Key technologies of processing.
Automobile Technology & Material, 2003, (3): 10-13.