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Self-consistent Subband Calculations of AlxGa1-xN/(AlN)/GaN-based High Electron Mobility Transistor T R Lenka1and A K Panda2 National Institute of Science and Technology (NIST), Berhampur, Odisha, Pin-761008, India 1trlenka@gmail.com, 2akpanda62@hotmail.com Keywords: 2DEG, GaN, HEMT, Heterostructure, Polarization, Subband Abstract.
A combination of wide bandgap materials (3.4 eV of GaN, 6.2 eV of AlN and 4.24 eV of Al0.3Ga0.7N) leads to high breakdown electric fields (1-3x106 V/cm), the strong polarization fields which are capable of producing high sheet charge densities of about 1x1013 electrons/cm2, high peak velocity (3 x 107 cm/s) and saturation velocity (1.5x107 cm/s) of electrons, promises high microwave power [1, 2].
It is formed at the heterointerface of wideband gap materials due to the conduction band discontinuity.
Panda: Effect of Nanoscale AlN layer for improving 2DEG Transport properties in AlGaN/AlN/GaN-based HEMT, International Journal of Pure and Applied Physics, Vol.6 (2010), No.4
Tsai: Simulation and analysis of metamorphic high electron mobility transistors, Microelectronics Journal, Vol. 38 (2007), pp. 251-254

It is well known that machined surface errors are affected by cutter deflection, runout, cutting edge geometry, and workpiece material [8, 9].
Experiments and Results The workpiece material is Al 6061 and the cutting tool's material is tungsten carbide.
Nath, M.Rahman, and K.S.Neo: A study on ultrasonic elliptical vibration cutting of tungsten carbide, Journal of Materials Processing Technology , vol. 209, (2009), pp. 4459-4464
Chang: Using two-dimensional vibration cutting for micro-milling, International Journal of Machine Tools & Manufacture, vol. 46, (2006 ) pp. 659-666
Journal of Manufacturing Science and Engineering, Transactions of the ASME, Vol. 128, (2006), pp. 474-481.

The work-piece material chosen for this study is brass.
The specific shear energy can be defined as the energy required removing a unit amount of material [6].
Causes of the size effect include ploughing of material due to large negative effective rake angles, the pressure applied to the flank face of the tool due to elastic recovery of the material, and strain-rate dependency and dislocation density [6].
References [1] Jing Xiubing，Li Huaizhong，Wang Jun，Liow Jong-Leng，Experimental study of cutting forces in micro end-milling, Advanced Materials Research. 500(2012) 357-362
Ni, A static model of chip formation in micro scale milling, ASME Journal of Manufacturing Science and Engineering.126 (2004) 710–718.

Electrochemical machining (ECM) is well suited for difficult-to-machine materials.
The material cost of most panels exceeds 50% of the total cost.
Acknowledgement The current study is supported by the National Science Council, contract 100-2221-E-152-003.
Landolt: Journal of Applied Electrochemistry, Vol. 13 (1983), p. 795-802
Pa: Journal of Materials Processing Technology Vol. 532-533 (2006), p. 965-968

Experimental Material.
Journal of Geochemical Exploration, Vol.93, (2007), P.47-65
Advanced Materials Research,Vol.158(2011).P. 12-17
Advanced Materials Research, Vol.158 (2011), P.140-144
Advanced Materials Research, Vol.201, (2011),P. 2789-2792.

These two materials are glued coaxially by epoxy, therefore, the relative motion of them will not happen in vibration process.
The base plate material is polycrystalline silicon.
Acknowledgement This research is financially supported by the Zhaoqing City science and technology project (No. 2012G031).
Journal of Micromech and Microeng, 2006 (16), p.875-885
Journal of Detection and Control, 2014.2, 36(1): 67-70

Preparation of polypropylene and polysulfone composite ultrafiltration membrane though physical coating method Feifei Shao1, a, Yufeng Zhang2, b, Lei Ni3, c 1, 2, 3State Key Laboratory of Hollow Fiber Membrane Materials and Processes (Tianjin Polytechnic University), Tianjin, 300387, China aCorresponding author: shaofeifei820@163.com Keywords: composite membrane, coating, water flux, PEG-2000 rejection.
Polysulfone as the film material has been widely used in the ultrafiltration membrane [2].
Acknowledgment This work was financially supported by the China High-Tech R&D Program (863 Program, 2012AA03A602), the National Basic Research Development Program of China(973 Program, 2012CB722706)and the National Natural Science Foundation of China(51073120).
Journal of Functional Polymers. 2(2002), p. 171-176
European Polymer Journal. 39(2003), p. 647-654

Experimental investigation of the influence of the bond conditions on the shear bond strength between steel and self-compacting concrete using push-out tests Peter Helincks1,2,a, Wouter De Corte1,2,b, Jan Klusák3,c,Veerle Boel1,2 and Geert De Schutter2 1Department of Construction, Faculty of Applied Engineering Sciences, University College Ghent, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium 2Department of Structural Engineering, Faculty of Engineering Sciences and Architecture, Ghent University, Technologiepark-Zwijnaarde 904, 9000 Ghent, Belgium 3Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Žižkova 22, 616 62 Brno, Czech Republic apeter.helincks@hogent.be, bwouter.decorte@hogent.be, cklusak@ipm.cz Keywords: steel-concrete joint, epoxy adhesive layer, push-out test, shear bond strength Abstract.
However, a good connection between both materials is required to obtain this good structural performance.
Experimental program Materials.
Acknowledgements The authors thankfully acknowledge the Research Fund University College Ghent and Czech Science Foundation (grants P108/10/2049 and P105/11/1551) for financial support, Tecnochem Italiana S.p.A. for providing the epoxy resin Tecnoepo 400, and students Frederic Verplancken and Bart Van Gyseghem for their assistance in the preparation and execution of the push-out tests.
References [1] Richard Liew J.Y., Sohel K.M.A. (2009), Lightweight steel-concrete-steel sandwich system with J-hook connectors, Engineering Structures 31, pp. 1166-1178 [2] Johnson R.P. (2000), Resistance of stud shear connector to fatigue, Journal of Constructional Steel Research 56, pp. 101-116 [3] Helincks P., De Corte W., Klusák J., Seitl S., Boel V., De Schutter G. (2012), Failure conditions from push-out tests of a steel-concrete joint: experimental results, Key Engineering Materials Vols. 488-489, 2012, pp. 714-717 [4] Aboobucker M.A.M., Wang T.Y., and Richard Liew J.Y. (2009), An experimental investigation on shear bond strength between steel and fresh cast concrete using epoxy, The IES Journal Part A: Civil & Structural Engineering Vol. 2 (No. 2, May), pp. 107-115

The workpiece material is QT500-7, and its hardness is 230HBS.
Journal of Materials Processing Technology. 170 (2000), p. 143 - 152 [3]Wang YouLi, Hou Zhongbin.
Materials Science Forum Vols. 626-627 (2009), p. 605-610 [5]Deng Julong.
Basic of Grey Theory (Huazhong University of Science and Technology Publications,China 2002)
Journal of Inner Mongolia Polytechnic University (Natural Science). 04(2004), p.274-278

Inventory management subsystem: It defines the properties of objects, such as materials, accessories, consumables, finished products, semi-finished products and so on.
It can help storage managers to conduct a comprehensive control and management to storage, library, mobile and inventory, so as to achieve the purpose of reducing inventory, declining funds used, preventing the materials being overstocked and shorted.
Production management system: It includes program management, materials management, product management, extraction plant, external processing management, production process management, intermediate station management.
Han: Journal of Jiangsu University of Science and Technology (Natural Science Edition), Vol. 15 (2001) No.6, pp.87-88
Tang: Journal of University of Electronic Science and Technology of China (Social Sciences Edition), Vol. 111 (2003) No.3, pp.72