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Introduction Nanotechnology, most explored field in science and technology!
· Sponge of blended chitosan-fibroin that could be suitable for a future construction of dressing materials has been investigated by Strobin et al.
Materials and experimental methods: Acetic acid (AA) and Hydrochloric acid (HA) purchased from CDH and used as that were supplied.
Pharm., 120-115 [90] El-hefian,E.A., Nasef, M.M. and Yahaya, A.H., Australian Journal of Basic and Applied Sciences, 5(5): 670-677, 2011 [91] Chaudhury, A. and Das,S., AAPS PharmSciTech, Vol. 12, No. 1, (March 2011), p10-20 [92] V.R.
Sinha et al. / International Journal of Pharmaceutics 274 (2004) 1–33 [93] Espíndola et al, Int.

The development of a region must be based on consumption of material resources as well as emissions of certain pollutants.
Acknowledgements This work was financially supported by the Ministry of Education Humans and Social Science Foundation (12YJAZH166), and Hunan Social Science Foundation (11JD53).
Beijing: Chinese environmental science press,p.57-68,2001
Journal of ecology and rural environment, vol.22 (3), p.19-22, 2006
Chinese journal of eco-agriculture, vol.15 (3), p.155-160, 2007

China 2 Department of Radiology, Peking University Third Hospital, North Huayuan Road, No. 49, Haidian District, Beijing, 100191, P.R.China 3 Department of Applied Sciences, Peking University Health Science Center, Xueyuan Road, No. 38, Haidian District, Beijing, 100191, P.R.China a411laoke@163.com, bzuolonglotus@163.com, cshuxue@bjmu.edu.cn, dlaoke411@163.com * Corresponding author Keywords: Brain extracellular space, Drug distribution, Mathematical model, Magnetic resonance tracer, Parameter estimation.
Acknowledgements This study was supported by the National Natural Science Foundation of China (No. 91330103) and Beijing Natural Science Foundation in China (No. 1102032).
Han, Measurement of brain extracellular space and its physiological and pathophysiological significance, Journal of Peking University (Health Sciences). 42 (2010) 234-237
Xu, The Initial Study on Quantitative measurement of Brain Extracellular Space by Using MRI Gd-DTPA Tracking Method, Journal of Peking University (Health Sciences). 42 (2010) 188-191
Ye, Assistant materials of mathematical modeling competition for undergraduates, first ed., Hu’nan Education Press, Changsha, 1993.

., The Use of Computers instead of Drawings, AIA Journal, 1975,63(3),46-50. ], and it has become central issue of research and application in the field of architecture information technology abroad.
For example, The 2008 Beijing Olympic Games Olympic village space planning and material management information system, the South-to-North Water Transfer project, and so on.
The details of the material and components need involved in the preparation stage, even virtual design construction (VDC) should in advance for easy to control the overall depth and schedule of project.
The relevant disciplines are mathematics, physics, environmental science, ecology, computer science, etc.
Present Situation and Development of BIM Standards [J].Building Sciences, 2012,(8):256. ].

According to the rich practical experience of the effective English teaching field, scientific research experience and the actual investigation, the author comprehensively analyzed the present situation of current college English listening teaching, conducted the English teaching mode that based on podcasting technology, used bilateral W-test of effective results, and the count materials were dealt with test, eventually the author obtained that the achievement of college English listening teaching based on podcasting technology was significant, it could effectively improve the level of English listening, and at the same time it provided the new teaching mode and scientific path for the college English listening teaching.
The mode analysis of College English listening by using podcasting technology teaching With the rapid development of modern science and technology, all kinds of computer network, multimedia technology has come to the classroom teaching, the teaching methods of the new modern multimedia technology has been rapidly applied to the whole nation.
The research on independent teaching mode of university English listening based on the network .Jilin Engineering and Technical Teachers College Journal,2012(03):72-74 [4] Chen Suqin.
Promoting general metacognitive awareness .Instructional Science,2011(9): 55-59

The assayed materials were mainly Ti6Al4V.
In this section, the reactions of the various materials in strong alkaline water are tested.
The corrosion characteristics of these materials are also confirmed by experiment.
The result of the experiment regarding to alkali resistance of the materials are shown in Table 1.
[2] SHIHDDAIRA S., Material science for corrosion and corrosion resistance (in Japanese), AGNE technological center, 1995, pp.30-32, 255-257, 287-288

Kestens1,d 1 Dept. of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CL Delft, The Netherlands, 2 Dept. of Materials Science and Metallurgy, Ghent University, Laboratory for Iron and Steelmaking, Technologiepark Zwijnaarde 903, B-9052 Ghent, Belgium, a h.landheer@tudelft.nl, bs.e.offerman@tudelft.nl, cr.h.petrov@tudelft.nl, dl.a.i.kestens@tudelft.nl Keywords: orientation relationship, misorientation, phase boundary, nucleation, phase transformation, ferrite, austenite.
Hillert: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science Vol. 27 (1996), p. 480 [5] H.
Kestens: Materials Science Forum in press
Jonas: Journal of Applied Crystallography Vol. 39 (2006), p. 72 [7] J.K.
Randle: Materials Science and Technology Vol. 17 (2001), p. 615

Various groove types are applied to reduce the excessive welding heat input and improve the material properties.
EAGAR: Temperature Profiles, the Size of the Heataffected Zone and Dilution in Electroslag Welding, Materials Science and Engineering, 56 (1982), pp.181-193 [4] Y.
Van Tyne: Thermal shock resistance of electroslag cast steel for hot-working tools, Journal of Materials Processing Technology, 155-156 (2004), pp.2122-2126

If the tubes are made of aluminum alloy, the strength of the weld heat-affected zone [2][3] is reduced to approximately 60% of the original strength of the material; therefore, the weld zone becomes the weakest spot of the welded structure.
When needed, the thickness or material of slip tee-joint can be easily changed or adjusted to increase the joint strength/stiffness locally. 3.
A gap allowed in the slip tee-joint design The disadvantage of this slip tee-joint is higher material and manufacturing cost than those of the common tee-joint.
Eagar, “Temperature Profiles, the Size of the Heat-affected Zone and Dilution in Electroslag Welding, ” Materials Science and Engineering, Vol. 56, Issue 2, Nov. 1982, Pages 181-193
Irving, “The role of residual stress and heat affected zone properties on fatigue crack propagation in friction stir welded 2024-T351 aluminium joints, ” International Journal of Fatigue, Vol. 25, Issue 1, Jan 2003, Pages 77-88

Relative to titanium alloy, TiAl intermetallic compound can provide better resistance to wear and high temperature oxidation [7], TiAl is a kind of potential high temperature structural material and should be applied more widely [8-10].
Journal of the Chinese Ceramic Society, Vol.31(2003),p.1221-1224
Rare Metal Materials and Engineering,Vol.29(2000),p.269-272
Materials Science and Engineering,Vol.A329-331(2002),p.582-588