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As the spark jumps across the gap, material is removed from the work piece.
Experiments are conducted using tool as Zinc coated wire of 0.25mm diameter and D2 die steel is used as the work material for the present experiment.
Aishwarya, Optimization of Wire Cut Electrical Discharge Machining of Inconel 800 using Grey Relational Analysis, Advanced Materials Research Vol. 576 (2012) pp 552-555
[4] Esmat Rashedi, Hossein Nezamabadi-pour, Saeid Saryazdi, GSA: A Gravitational Search Algorithm, Information Sciences 179 (2009) 2232–2248
[5] Taisir Eldos, Rose Al Qasim, On the Performance of the Gravitational Search Algorithm, (IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 4, No. 8, 2013.

The new technological process to form deep hole in relative thin panel by friction heat not only saves material, but also obtains workpieces with high performance.
Two models with different materials are established for comparative analysis in this paper as Fig. 1 and Fig. 2.
The material of workpiece is steel 45, and the material of drill is cemented carbide on base of dry friction.
Zhou: Development Frontier of Tribology (Science Publications, China 2006)
(In Chinese) [4] Bagci E and Ozcelik B, Anlysis of Temperature Changes on the Twist Drill under Different Drilling Condition Based on Taguchi Method during Dry Drilling of Al 7075-T651, International Journal of Advanced Manufacturing Technology,vol.29(2006), pp629-636 [5] Y.Q.

To promote a stable and functional direct connection between bone and implant, titanium implants can be coated with materials based on calcium phosphate ceramics such as hydroxyapatite (HAp)(Ca10(P04)6(OH)2).
The combination of these two materials gives mechanical strength and good osteointegration proprieties at the interface [5].
Materials and methods We used in this study bone material from one sheep with two implants, Ti-6Al-4V, (20 mm x 10 mm x 1.4 mm) inserted in its left and right tibia bones, the implant having one face coated, the other not.
The new bone material close to the interface may become unstable.
Lodini: Journal of Neutron Research Vol. 9 (2001), p. 243

The constant improvement of market mechanism, sustained growth of social economy, continuous perfection of laws, rules and regulations, and wide application of modern science and technology has created beneficial conditions for logistics development.
Traditional enterprises engaged in commercial storage and transport of materials and equipments, restricted by old warehouse structure, usually have a very low utilization rate of warehouse capacity and laggard logistics techniques, and have no strong points in dealing with diversified business; logistics enterprises developed from the traditional state-owned transport mode, affected by traditional sense of business and management system, usually have a low utilization ratio of facilities, and have difficulties in exerting the advantages of intensified operation and realizing scale operation and benefits; plentiful middle-and-small-sized logistics enterprises are commonly characterized by “Being small, few, weak and dispersive”, namely small business scale and market share, few service functions and high-quality talents, weak competitiveness and financing capability, single structure, dispersive network or lack of network, and nonstandard business order, etc. and could not meet the requirements
Joint distribution could maximize the utilization ratio of the logistics resources including personnel, materials and equipment, money and time, etc., realize the greatest benefits, remove excessive cross transport, and obtain the social benefits such as traffic relieving and environmental protection, etc.
Journal of Changchun University of Science and Technology, vol.19, no.2, p.32-34.

Consequently,biocompatible materials need to be coated onto the surface or be incorporated as second phases [4].
The fracture toughness which is contributed to research functional coating material for biomedical materials.
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We may use fewer samples per scan to speed up the iterative operation, but this may influence inversion precision. 3.1 Layer-by-layer inversion algorithm of dielectric constant In general, because underground media are composed of granular materials, electromagnetic will scatter when propagating in them.
The Application of RBF Neural Network in Material Recognition of Ultra-Wideband Ground-Penetrating Radar.
Chinese Journal of Geophysics. 2006,49(5):1499-1504
Journal of Xiamen University(Natural Science).2008,47(1):31-35 [7] Zhang Chun-cheng, Zhou Zheng-ou.
Journal of Electronics & Information Technology. 2005,27(7):1065-1068

Especially when it comes to cooling of jet turbine blades it is crucial to guarantee hight heat transfer rates in order to avoid material failure since the firing temperatures exceed the melting temperature of the materials used by far [1].
Acknowledgments The authors are grateful for the financial support provided by the Bavarian State Ministry of Education, Science and the Arts.
Perepezko, The Hotter the Engine, the Better, in: Science, volume 326, no.
Oliveira, Comparison of Heat Transfer Augmentation Techniques, in: AIAA journal, volume 41, no. 3, (2003), pp. 337-362
Tay, Determining The Effect Of Dimples On Drag In A Turbulent Channel Flow, in: 49th AIAA Aerospace Sciences Meeting, no.

Acknowledgement This paper is part of the project supported by National Natural Science Foundation of China (60975046).
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