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Statement of The Main Challenges of the Real Estate Market in China Cheng FAN, Pei CHANG, Ruhua XIE Center for Material Failure Modeling Research, Dalian University, Dalian 116622, China 249592174@qq.com, 1067670456@qq.com, 1697883015@qq.com Keywords: real estate; urbanization; population structure; aging; challenge Abstract: As a component of market economy, real estate is running and developing in the environment of politics, society, finance and internation.
Tab.1 Chinese population and its components[3] Target 2010 2013 year-end balance (10 thousand) proportion（%） year-end balance (10 thousand) proportion（%） National population 133972.5 100 136072.7 100 Among them: the urban population 66557 49.68 73111.4 53.73 Rural population 67415 50.32 62961.3 46.27 Among them: Male population 68685.3 51.27 69728.2 51.23 female population 65287.2 48.73 66344.5 48.77 Among them:0 to 14 years old 22246.0 16.60 23875.2 17.55 15 to 59 years old 93961.6 70.14 91954.2 67.58 60 years old and above 17764.9 13.26 20243.4 14.87 Among them: 65 years old and above 11883.2 8.87 13161.6 9.67 With the development of economy, culture and science in our country, people’s fertility values have changed fundamentally.
Beijing: Social Science Press, 2006
Population and the sustainable development of the real estate industry in our country[J] Journal of Chongqing University, 2005,(1): 25-30
Modern Finance and Economics(Journal of Tianjin University of Finance and Economics), 1999, 8: 56-60

Software Development for Telehealth at Blood Donation Centers Drielle Caroline de OLIVEIRAa, Paulo Henrique Aparecido RODRIGUESb, Rafael Palma SOARESc, Flavio Cezar AMATEd* Federal Institute of Education, Science and Technology of São Paulo (IFSP), SP, Brazil adrielle_karoline@hotmail.com, bphaprodrigues@gmail.com, crafotasps@gmail.com, damate@ifsp.edu.br Keywords: Teleducation, Blood donation, Blood stock levels, Blood centers, Computer system.
All material used is within a strict quality standard developed by the Ministry of Health and international organizations, taking into account the health of the donor and recipient [4].
, Journal of the European Economic Association, 2008, 6(4), 845-863
Asian journal of transfusion science, 2011, 5.1: 49.

After the experiments of the foaming ability and the wetting ability to different dust grains with different particle diameters, the results show that the new foaming agent can reduce the surface tension of solid and liquid materials rapidly with good foaming and wetting abilities.
Experimental Materials By comprehensively considering the foaming, solubility, cost, environmental protection and other factors of surfactant, select 12 surfactants from a large number of surfactants, with the active substance content of 92% to 95%.
University of Science and Technology of China Press,2002:109-117
[4] Jiang Qingzhe,Song Zhaozheng,Zhao Mif,Ke Ming.The Science and Application of Surfactant[M].
Journal of Colloid and Interface Science. 2006(295), 218~229.

Ti alloys are attractive materials for such applications, they are expensive due to the costly alloying elements such as Nb or Mo.
As a result, these materials are used in a wide range of applications in the aerospace industry, as well as in medicine and sports[1].
References [1] Materials Properties Handbook, Titanium Alloys, Eds.
Collings, ASM International, Materials Park, Ohio, 1994, P. 3-4
Metal Science Journal, Vol. 5, 1971, P.92-101

That is why these structures should be protected by the more advanced coatings of new generation, namely: geocement-based coatings which differ from the known-in-the-art binding materials by formation in the hydration products of the zeolite-like minerals and feldspathoids.
The protective effect of barrier type coatings (paints, lining, rubberized, banding, mastic and liquid) is determined by the degree of their impermeability and depends on the diffusion and adhesion properties of the materials used, as well as the quality of the coating performance.
Materials and techniques For geocement composition type (0.28Na2O+0.72K2O)×1.5Al2O3×4.5SiO2×17.5H2O used: КМ 60 metakaolin (Czech Republic); potassium water glass with the density of 1,430 kg/m3 and silica module 3.0, microsilica (SiO2 not less than 85%) and technical alumina of grade G-00.
Krivenko, Acid resistant materials based on alkaline aluminosilicate bonds, PhD Thesis, Kiev, 1971
Skurchinskaya, et al, Journal Tsement, St.

China 2College of Science, Henan Agricultural University, Zhengzhou 450002, P.R.
The PCB information influencing PCA process planning includes PCB’s layer, thickness, material, length, width, etc.
Grieve: The International Journal of Advanced Manufacturing Technology, (2000) No. 14, pp. 261-268
Zhang: Journal of Northwestern Polytechnical University, Vol. 20 (2002) No. 1, pp. 132-136.
Feng: Chinese Journal of Mechanical Engineering, (2004) No. 5, pp. 30-36.

Zhang, “Research and application of synchronous dynamic test and adjustment technology for Novel water injection well,” Applied Mechanics and Materials, vol. 44-47, pp. 1476-1481, December 2010
Zhang, “A Novel Multi-layer Intelligent Test and Adjustment Technology for Water Injection Well,” Advanced Materials Research, vol. 424-425, pp. 732-736, March 2012
Xu, “Study on PIDNN-based flow control in layered water injection technology in oilfield,” Advanced Materials Research, vol. 291-294, pp. 2718-2722, July 2011
[5] Jia De-li, Zhao Chang-jiang, and Yao Hong-tian, “Study on new type of hierarchical injection and efficient testing adjustment techniques,” Journal of Harbin University of Science and Technology, vol. 16, pp. 90-94, August 2011
[7] Zan Peng, Yan Guo-zheng, and Yu Lian-zhi, “Pneumatic miniature robotic system based on adaptive fuzzy PID regulator,” Chinese Journal of Seientifie Instrument, vol. 28, pp. 1543-1547, September 2007

Introduction Sulfonate surfactant is a kind of surfactant that has the most yield and widest application In recent years, along with the economic demand and with the development of daily chemical industry, petroleum industry and other fields, researching and developing surfactants of raw materials to get easily, safety to human beings and the environment , raw materials derived from natural animal and plant oil fatty acid is being paid more and more attention[1-6].
The synthetic products were characterized by infrared spectroscopy proved to be the target product This synthetic route has a lower reaction temperature, high yield, readily available raw materials, etc.
Synthesis and surface measurements of surfactants derived from dehydroabietic acid [J].Journal of Surfactants and Detergents,2003 , 6 (2) : 125- 130
Chinese Journal of Colloid & Polymer,2003,21(2):33-34 [9] ZUO Haili,WU Xiaoqing,CUI Lujuan,.
Chinese Journal of Colloid & Polymer,,2006,24(4):33-34

Therefore it is one of important material in aeronautics and astronautics field [1-3].
Welding rod use the same material with 7075 aluminum alloy board and size is Ф2.0mm.
Journal Herbin Univ.
Materials for Mechanical Engineering.
Atapek, Effect of aging temperature and of retrogression treatment time on the microstructure and mechanical properties of alloy AA 7075,Metal Science and Heat Treatment.

Introduction At present, tungsten metal material production is the main method used in powder metallurgy tungsten powder or alloy powder compaction, sintering.
Differential thermal analysis method is at the same temperature to be measured in the system and the reference material to a certain speed heating or cooling, curve recording system tested and does not change the temperature difference between the base material and time.
When the tested system with phase change, because there are endothermic or exothermic reaction, then measured reference material system and reference temperature difference will change, so as to obtain the differential thermal curve reaction endothermic or exothermic Gu Huofeng, according to the curve to determine the phase transition temperature.
Acknowledgments This study was financially supported by the National Natural Science Foundation of China (No. 51074060).
Chinese Journal of Materials Research Vol. 15(2001), p 459 [2] N.