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Study on the Dephosphorization of Semi-steel in Ladle Yong-hui Han1,2,a, Rui-guo Bai2,b, Da-qiang Cang1,c, Fu-hai Liu1,d, Hai Gao2,e 1School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing, Beijing 100083,China 2 Chengde Iron &Steel Group Co．Ltd,Hebei Steel Company Group,Chengde,Hebei 067002,China ahebeihyh@126.com,bxx_js_tianp@cdvt.com.cn,ccangdaqiang@metall.ustb.edu.cn, dzhurong@ustb.edu.cn,exx_js_gaoh@cdvt.com.cn Key Words; ladle; semi-steel; dephosphorization; CaO (calcium oxide); impact factors Abstract:Combined with converter semi-steel component of Chengde steel plant, the main components of 100t ladle dephosphorization slag were calculated to propose the initial ratio of dephosphorization slag composition.
Iron and steel enterprises which use vanadium magnetite as raw material adpot converter duplex process to extract vanadium in steelmaking, obtain smei-steel after converter v-recovering process, and use semi steel in converter steelmaking.
Experimental materials: 1) material: iron bearing steel vanadium extraction converter semi steel; 2) dephosphorizing agents: CaO, Fe2O3 and CaF2 reagent; 3) industrial oxygen.
References [1] Singh BN.Recent fiends in iron and steelmaking technology[J].Bulletin of Materials Science,1 989,1 2(3):435-447

Depending on the material and the geometry which is formed, parameters like the infeed, the forming velocity or the tool path (unidirectional, bidirectional, helical tool path, etc.) affect the part accuracy.
By defining the adjustment direction vadj and length ladj, the CAD model, or better the part, can be scaled or deformed to consider the springback and robot compliance in advance, based on experiences for the material and geometry type.
For this purpose a testing program has to be prepared, considering the robot´s stiffness, different geometries and materials in order to complete the forming knowledge and therefore increasing the part accuracy.
SheMet 2007, Key Engineering Materials, 2007, 344, 527-534

Introduction: Weld strength is a dominating factor for the line pipe steels like X-80, X-100 etc in assessing the overall performance of these materials, which is controlled by the austenite grain size in the heat affected zone (HAZ).
Material and Techniques : The studies were carried out on an Nb-Ti-Mo microalloyed steel of X-80 grade supplied by Canadian manufacturer of pipeline, EVRAZ (Regina, Canada).
Fig. 2: Representative bright field TEM micrograph of the base material.
The Mo-rich particles that had been observed in the as-received material are not considered as they go into solution above 900 °C, which is supported by thermodynamic calculations using the TCFE5 database [28] and is also consistent with the TEM observations in heat treated samples.
Acknowledgment : The authors would like to acknowledge the Natural Sciences and Engineering Research Council of Canada (NSERC), Evraz Inc.

Adaptive Research on Urban Shelter and Evacuation System Plan Coping with Catastrophe Chaofeng LIU 1,a, Jingyu SU 1,2,b, And Wei WANG1,c 1 College of Architecture and Urban Planning, Beijing University of Technology, Beijing,100124, China 2 Beijing Safety and Disaster Reduction Center of City & Engineering, Beijing University of Technology, Beijing ,100124, China aliucf8403@126.com, bsunjingyu@gmail.com, chautww@126.com Keywords: emergency shelter; disastrous environment ; adaptive; disaster risk; planning strategy; Abstract: Taken examples of recent major disasters, the deficiencies of shelter and evacuation system in planning, construction, etc.. and the inadaptability of protecting security needs of the city under extreme disasters is analyzed.
Integrate "land, water, air" the three rescue accesses and other disaster prevention and rescue systems to organize the survivors for evacuation and resettlement, goods and materials for scheduling, etc..
Integrate "land, air" the two rescue accesses and other disaster prevention and rescue systems to organize the survivors for evacuation and resettlement, goods and materials for scheduling, etc..
It is stressed that air accesses are primarily adopted and coordinated with other disaster prevention and rescue systems to organize survivors for evacuation and resettlement, goods and materials for scheduling, etc..
For the shelters with security risk, under the constraints of the limited funds and the shelter needs, in order to play the maximum benefit of disaster prevention and mitigation resources, based on optimization theory and a reasonable technical means, identify the order and the key of modifying.

Construction Research by Introducing Sense of Place into Cultural Landscape Design in Ethnic Areas: A tentative approach to intensify place identity HongFang Liu 1, a, QingZhong Ming2, b*, Fen Lu3, c 1Institute of Tourism and Geographic Science, Yunnan Normal University, Kunming 650500, Yunnan, China 2Tourism Planning Centre, Yunnan Normal University, Kunming 650500, Yunnan, China 3Institute of Tourism and Geographic Science, Yunnan Normal University, Kunming 650500, Yunnan, China abanhunshui@163.com,bmingqingzhong01@163.com,c33006812@qq.com Key words: construction; sense of place; ethnic areas; cultural landscape; place identity Abstract: Cultural landscape reflects the historical and traditional heritage of a place and has a symbolic significance and function.
Based on the theory of sense of place, some efforts could be done to improve the current situation to retrieve or maintain place identity of both local people and tourists. 4.1 Focus on insiders and outsiders, commercial profits and traditional cultural preservation to realize a win-win solution Refining cultural landscapes under the background of ethnic tourism, cultural rejuvenation and creativity engineering according to the theory of sense of place underlines the attitudes and perception of both insiders and outsiders.
Besides, the similar materials, buildings, architecture styles weaken the enchantment of place.
Ethnic people accumulate a unique set of materials, methods and technology to build their houses, temples, often are harmonious with the natural settings.
Firstly, pay attention to local residents and outsiders, balance commercial profits and traditional cultural preservation to realize a win-win solution; secondly, do a survey to investigate what local people care most about cultural landscape to recognize the different levels that people can accept, to maintain, to improve or to reconstruct; thirdly, construct an inner community dynamic feedback framework to regulate disorder construction, from investigating and supervising the current problem with the joint efforts of ethnic group members to communicating and negotiating with the stakeholders like community elites, developers, government sectors to realize an in-time supervision, community participation and collective action; finally, consider the localization of cultural landscapes in ethnic areas, utilize local materials, methods and technology to protrude local ethnic color, it also will be helpful to shape the unique image and place features of ethnic areas.

Effects of Yeast Extract on Poly-ε-lysine Production in Batch Culture of Streptomyces Albulus Chen Xiong*, Wang Zhi, Wang Yongze, Jiang Fatang, Li Dongsheng, Wang Jinhua Key Laboratory of Fermentation Engineering (Ministry of Education),College of Bioengineering, Hubei University of Technology,Wuhan, 430068, P.
It was accidentally discovered as an extracellular material produced by filamentous bacterium Streptomyces albulus ssp [1, 2].
Yeast extract (YE), generally used brewers’ yeast or bakers’ yeast as raw materials, is obtained through serials of processes of autolysis or enzyme hydrolysis, separation and concentration (or spray drying).
Consequently, the final composition of YE can be quite different depending on the process and the raw material used [4, 5, 6].
II.Materials and Methods A.

Secondary Hardening during Tempering of Cr-W-Mo-V High Alloy Medium-upper Carbon Steel and Its Hardness Forecast Yongqing Ma 1, a, Hongtao Gao 1,b, Yufen Liang 2,c , Xiaojing Zhang 2,d 1Department of Materials Science,Dalian Maritime University, Dalian, Liaoning116026, China 2Changzhou Machinery Blade CO.LED, Changzhou, Jiangsu 213119, China amyq_dlmu@163.com, bgaohongtao@dlmu.edu.cn, cyufen_liang@163.com,djing267@163.com Key words: High alloy medium-upper carbon steel; Secondary hardening; Quenching matrix composition; Carbide phase; Balanced carbon of matrix; Tempering hardness forecast Abstract.
Experimental materials and method Experimental materials were melted in 0.5t variable frequency induction furnace adding electro-dregs remelting furnace.
The tempering hardness forecast of secondary hardening of Cr-W-Mo-V high alloy medium-upper steel not only provides techno-parameter for alloy design of a steel including composition design, technics design and property forecast, but also provides techno-parameter for manufacture engineering including material choice and heat treatment.

Chen 1, 2, a 1 College of Materials Science & Engineering, Shandong University of Science & Technology, 579 Qianwangang Road, Qingdao 266510, China 2 Advanced Manufacturing Technology Research Center, Chinese Academy of Machinery Science and Technology, 18 Xueqing Road, Beijing 100083, China a matscichen@hotmail.com Keywords: interdiffusion, flow point, diffusion-induced stresses, phase growth, diffusion theory Abstract.
The density ρ (kg m-3) of the flow point could be considered as the variable of 1D position x and time t: (, )x tρ ρ= (1) Since the position x of the flow point is also changed with time t, the above equation can be rewritten as (( ), )x t t ρ ρ= (2) So the density of the flow point changing with time t can be deduced as dd x d t t x d t ρ ρ ρ∂ ∂ = + ∂ ∂ (3) And if the symbol x ∂ ∇ = ∂ is introduced, the above expression is simplified to du dt t ρ ρ ρ ∂ = + ∇ ∂ r (4) where u r (m s-1) is the velocity of the flow point, ddt ρ is the rate of material change of density of the flow point and t ρ∂ ∂ is the rate of local change of density on site x.
Therefore, the velocity of the flow point can be related to the diffusion fluxes as 1 ( / ) n i i i i divu divJ M = = − Ω∑ r r (i=1, 2, …, n) (10) After time dt, the material change of concentration (kg m-3) of component i in flow point can also be given by δ (δ ) [δ (δ )] i i i i A x d m d A x d x ρ ρ ρ + = − + (11) Substituting Eq. 5, we can obtain δ(δ ) (δ ) [1 ] δ δ δ i i i d J d x d x dt x x xdt ρ ρ + = − − (12) Considered that (δ ) δ d x x is infinitesimal compared to 1, this equation can be simplified as i i i d divJ divu dt ρ ρ = − − r r (13) This is the rate of material change of concentration of component i of the flow point.
Acknowledgement The financial assistance of the National Nature Science Foundation of China (Research Grant 50601016) and the International Cooperation Key Project of the Ministry of Science and Technology of China (Research Grant 2005DFA70480) is gratefully acknowledged.
Poirier: Plasticity of Crystalline Materials at High Temperatures (Quanhua Sci.

Although better geometric accuracy can be achieved, a longer product delivery time and higher material costs are unavoidable.
The geometric deviation of the formed workpieces is within 2.5mm, which is mainly caused by the robots´ elasticity and the springback effect of the material [9].
First, the path planning process will be connected to a data base system through the API in the CAM-software, in which all the paths could be stored according to different target geometries, used tools, material and forming strategies.
Muzzupappa: Journal of Materials Processing Technology, 2008, Vol. 162, p. 156-162 [3] H.
Zhang: Key Engineering Materials, 2007, Vol. 344, p. 599-605 [6] P.

Engineering Survey The tunnel of the high-speed rail, of which the design speed is 200 km/h, is located in Huizhou district.
Mohr-coulomb elastic-plastic constitutive model is adopted by rock layers, and elastic constitutive model is adopted by concrete materials.
Parameters of materials are shown in Fig. 5.
Equivalent elastic modulus, density and yield strength needed to be calculated according to the area ratio of the two materials.
[10] Guoqing Sun: Chinese Journal of Railway Engineering Society No. 9 (2010), p. 35(in Chinese).