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Nanoscience and nanotechnology are the study and application of extremely small things and can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering [2].
Itoh, in functional Thin Films and Functional Materials: New Concept and Technologies, ed.
Lu.”Zinc Oxide Nanostructures : Synthesis and Properties”, Department of Chemical Engineering and Material Science & Department of Electrical Engineering and Computer Science, University of California, Irvine, CA 92697, USA, 2005
Van de Walle, “Fundamentals of Zinc Oxide as A Semiconductor”, Materials Department, University of California, Santa Barbara, CA 93106-5050, USA, 22 Oct 2009
Materials Chemistry and Physics 74.1, 2002, pp.83-91

Bamberger 1,d 1 Department of Materials Engineering, Technion, Haifa 32000, Israel 2McMaster University Hamilton, ON, Canada a akatsman@technion.ac.il, b anton_gorny@hotmail.com, cdshepelev@yahoo.com, d mtrbam@technion.ac.il Keywords: Mg-based alloys, precipitation hardening, grain boundaries Abstract.
[7] Tomo Ogura, Shoichi Hirosawa and Tatsuo Sato, Quantitative characterization of precipitate free zones in Al-Zn-Mg(-Ag) alloys by microchemical analysis and nanoindentation measurement, Science and Technology of Advanced Materials, 5 (2004) 491-496
Bushnev, Growth kinetics of precipitate-free zones near grain boundaries in Cu-Al-Co alloys, Russian Physics Journal, 22, 4 (1979) 405-409
Katsman, High temperature phase stabilized microstructure in Mg-Zn-Sn alloys with Y and Sb additions, Journal of Materials Science, 42, 24 (2007), pp.10014-10022
[11] A.Gorny and A.Katsman, Precipitation and Stress Influenced Coarsening in Mg- based MgZn-Sn-Y and Mg-Zn-Sn-Sb Alloys, Journal of Materials Research, 23, 5 (2008), 1228-1236.

In contrast, new-style materials would perform better in saving space, recycling waste and in an economic way.
Besides, it is very significant to replace the solid clay brick as green wall materials (including hollow brick and fly ash brick) in order to protect the land and reduce the environmental pollution. 3).
Suggestions Improved envelope materials.It is possible to use grass brick, adobe and other ecological material under the rule of structure function.
(In Chinese) [5] ZHAO Xi-ping, Xu Hai-bin,LiuJia-ping.Journal of xi’an University of science and technology, 2006,Vol.26,No13:334～338.
Journal of Jilin Architectural and Civil Engineering Institute, 2006,23(2):45-48.

Raw materials and Instruments Raw materials.
When the materials was dissolved and heated to a certain temperature, input the hydrogen peroxide solution with the concentration of 30% and acetic acid.
Fig. 4 Analysis Superplasticizers of the adaptability of cement Conclusion The materials of generated superplasticizer were isoamyl enol polyoxyethylene ether and acrylic acid.
Japanese Journal of Polymer Science and Technology, 6(1995)357-363
[3] Ran Qianping, Miao Changwen, Liu Jiaping.Performance andmechanism of a multi-functional superplasticizer for concrete, Materials Transactions, 6(2006)1599-1604.

Various trade off had been made between Al-Li alloys and composites and it seems out that the aluminum alloys is more superior over costly composite materials [2].
Al-Li alloys utilize the same manufacturing processes as conventional aluminum, while composite materials require a special manufacturing processes of in ovens or autoclaves with difficulty of recyclable.
It is shown that the strength of the friction stirred welded specimens becomes 22% lower than the parent materials, while that of the electron beam welded specimens decreases to 13%.
K., International Journal on Theoretical and Applied Research in Mechanical Engineering, 2(2013), p. 66-69
Mishra, R.S. and Ma, Z.Y., Friction stir welding and processing, Materials Science and Engineering: R: Reports, 2005. 50(1-2): p. 1-78

Moreover, other carbon nanomaterials may offer additional choices in designing materials with finely tuned properties.
A simple milling process will reduce both CO2 generation and energy consumption during materials production.
Ohara: Astronomical Journal Vol.140 (2010), p.1456 [9] S.
Iijima: Science Vol.306 (2004), p.1362 [13] T.
Ugarte: Science Vol.270 (1995), p.1179 [16] H.

Introduction In recent years, the domestic and foreign way of transformation and utilization of field waste resources mainly includes transforming them as energy, fertilizer, feedstuff, matrix, or industrial raw materials[1-3].
Materials and method Experimental materials.
[9]Dingfa Wang, Luli Zhou and Mao Li: Chinese Journal of Tropical Crops.
[14]Lee S W, Chouinard Y, Van B N: Asian-Australian Journal of Animal Sciene.
[15]Dewhurst R J, King P J: Grass and Forage Science.

Introduction Engine valve is one of the key parts of the engine, its umbrella head and guide rod parts of the size difference is very big, umbrella head is to use hot forging process manufacturing, because umbrella head for high temperature resistance and corrosion resistance, its material generally uses 5Cr21Mn9Ni4N etc austenitic heat resistant steel manufacturing, these materials alloy content is very high.
The hot forging die be used to forge valve umbrella head, the austenitic steel materials manufacturing, monolithic hot die with life short.
At present domestic materials ability high temperature fatigue at the same time and under high temperature to maintain high hardness material basically has two kinds: one kind is hard alloy steel; Another kind is high speed steel.
Valve material 5Cr21Mn9Ni4N contained in the alloy element is mainly Cr, Mn, Ni, N, the Cr content as high as 21%, mould materials used in the W6Cr5Mo4V2, When not to when nitrogen treatment, the alloy elements as the main for W, Cr, Mo, V, and 5Cr21Mn9Ni4N compared with only a kind of alloy element Cr the same, and When containing Cr quantity and large difference (in 6Cr5Mo4V2, Cr content is about 5%) and not to the nitrogen treatment , so the two kinds of material performance is large.
Journal of south China university of technology: natural science edition, 2001, 29 (4) : 95-96.

Results show that the creep constitutive equation can better describe the deformation characteristics of materials, and the numerical simulations and experimental test points are in good agreement.
So obtaining suitable materials constants within constitutive equation is very critical for successful implementation of numerical simulation.
The conclusion above shows that the constitutive equation at temperature for 190°C can more accurately describe materials creep behavior.
The unified constitutive equation has been implemented into the finite element solver ANSYS through user subroutine CREEP and the materials constants of 190°C and 150MPa are chosen, the result at time of 10 h is plotted in Fig.2.
Chinese Journal of Aeronautics. 20 (2007) 564-569.

Materials and methods Study area Huainan, is located in 116°21′21″-117°11′59″E longitude and 32°32′45″-33°00′24″N latitude, which covers a total area of 2596.4 km2, 100 km long from east to west and about 30 km long from north to south [1].
Acknowledge The work was supported by the National Natural Science Foundation of China (No. 40873070) and Science and Technology Plan Projects of Huainan (2010A03125).
Gui: Journal of Coal Science and Engineering (China), Vol. 14 (2007), No. 1, pp. 97-102
Haigh: International Journal of Surface Mining and Reclamation, Vol. 6 (1992), No. 1, pp. 31-37
Gao: Journal of China Coal Society, Vol. 34 (2009), No. 7, pp. 933-937.