Search results

The calculation result of lahar velocity can provide reference materials for making hazard prevention plan, and make the hazard relief measure of lahar transition from passive to active.
The calculation result can provide reference materials for making disaster prevention plan, and make the measure of lahar disaster relief transition from passive to active.
Acknowledgement This work was financially supported by Earthquake Industry Special Project (201208005) and National Natural Science Foundation of China (41072249).
References [1]Jian Sheng, Jiang Du, Chunhong Zou, et al: Journal of Institute of Disaster Prevention Vol.13-2(2011), p. 43-47.

Steel fibers mixed into the concrete, playing enhancement and crack-resistance roles would lead to changes in the nature of concrete materials so that it is impossible to fully use the existing research results of ordinary concrete wall-beams simply supported when studying bending behavior of normal section of steel fiber reinforced concrete wall-beams simply supported.
Steel fibers mixed into the concrete, playing enhancement and crack-resistance roles would lead to changes in the nature of concrete materials so that it is impossible to fully use the existing research results of ordinary concrete wall-beams simply supported when studying bending behavior of normal section of steel fiber reinforced concrete wall-beams simply supported.
Tab 1 The base of steel fiber concrete and materials in scale Test number Volume ratio of steel fiber /% Water-cement ratio W/C Sand ratio /% Material dosage（Kg/m3） water cement sand stone steel fiber A 0 0.47 50 188 400 871 871 0 B 0.8 0.47 50 188 400 871 871 39.2 C 1.2 0.47 50 188 400 871 871 62.7 D 1.5 0.47 50 188 400 871 871 94 Wall fabrication:The clay brick of MU10 and the cement mortar of M10 used in upper parts of the wall structure were used in loading test after a 28 days'curing.
Zhengzhou industrial university journal, 1988, 9(3): 1~13
Journal of XI'AN university of architecture & technology(natural science edition), 2009, 41(4): 496~501

It mainly consists of concrete, brick, mortar, tile, glass, steel bar and decorative materials.
Materials and methods Materials Building waste and river sand Building waste is composed of concrete specimens that spare of other experiment and concrete samples that after compressive strength test.
Reference [1] Kou Quanyou, Innovation practice of turn building waste into building materials [J].
(In Chinese) [6] Sun Jiaying et al, Properties of recycled coarse aggregate and its influence on concrete [J]. journal of building materials 2009,(1)30-32.
(In Chinese) [7] Wang Qiuling et al, resource utilization of construction waste[J]science and technology of overseas building materials 2004,25(6)4-5.

Materials and Methods An elementary version of a lathe machine was fabricated using design by analysis [23].
The fabricated machine was then tested for functionality (see Figure 1) and the bill of materials is shown in Table 1 Table 1 Bill of materials S/no Part No.
The machine was fabricated from locally available machine parts and raw materials.
Mohesenin, Physical Properties of Plant and Animal Materials, Gordon and Breach Science Publishers NY, Vol.1 ,1970
Emofurieta, A Study and Evaluation of a Manually Operated Cassava Tuber Sizing, Cutting and Sorting Machine, Tropical Journal of Environmental Science & Health, 10(1) (2007) 37-42

Moreover, the peening effect is very clear when the temperature of material in the peening region reaches its own plastic temperature.
In this way, computational efficiency can be as high as possible, at the same time computational accuracy of numerical simulation can be ensured. 1.2 Confirmation of runner materials and welding condition The materials of blade, crown, band and welding wires used in the process of welding are all 0Cr13Ni5Mo.The ellipse heating source model is chosen as the welding heating source in numerical simulation.
The peening effect is very obvious when the temperature of peening region is close to the material’s plastic temperature.
Shen: Journal of Guangxi University.
Fang: Chinese Journal of Mechanical Engineering.Vol.19(2006),p.109 (In Chinese) [8] S.

Preparation and Properties of LLDPE/EVA/Nano-ZnO Composites LIU Jia1,a, JIA Shu-sheng2,b 1 Faculty of Materials and Energy, Gangdong University of Technology, Guangzhou 510006, China; 2 The Key Laboratory of Automobile Materials of Jilin University, Ministry of Education; Changchun 130022, JiLin, China aliujia_789.student@sina.com, baml@jlu.edu.cn Key words: linear low density polyethylene (LLDPE); Ethylene-vinylacetate (EVA); optimization; dispersion morphology; mechanical properties Abstract: The process parameters of LLDPE/EVA/nano-ZnO composites were optimized by two methods.
Experimental Materials LLDPE: the type is UF414, the melting index (MI) is 2.0g/10min, and the density is 0.920g/cm3, which was produced by Hyundai Petrochemical Co., Ltd..
It was showed that ZnO content of about 3% is likely to be the best influencing factor on mechanical properties of composite materials.
[3] Hua YQ, Zhang YQ, Wu, LB, et al．Mechanical and optical properties of polyethylene filled with nano-SiO2．Journal of Macromolecular Science Physics, (2005), 44(2):149-159
Bei Jing: Science Press, (2009)

On this basis, some improvement opinions were put forward: using the raw material with low Mn, S and P; reducing the S content with pretreatment of hot metal; controlling the content of C and Mn respectively in C: 0.18 ~ 0.23%, Mn:1.20~1.30%; extending argon blowing time at argon flushing station, using electromagnetic stirring technology; controlling the cooling rate at 15 ℃/s.
Test Materials and Methods The materials used in the test were: HRB400, absolute ethyl alcohol(AR), nitric acid(AR).
The rolling process in the enterprise include: raw materials preparation → heating→ rolling →water-cooling, finishing.
Journal of University of Science and Technology Beijing, 2008,30(5):492-494,500
Laigang Science & Technology, 2011,(1):41-43

In terms of excellent mechanical strength, modulus and thermal stability, inorganic materials can improve the strength and thermal stability of the hybrid polymers.
Meanwhile, organic polymers, possessing outstanding optical properties, good flexibility and toughness, can provide a carrier environment and improve the dispersibility of the inorganic materials.
For inorganic material modified latexes, such materials can be prepared by simply admixing the emulsions with the inorganic component.
For organic phases, fluorine-containing polymers with long chains of carbon-fluorine compounds are unique low surface materials because of their water and oil repellency[7-9].
Guan: European Polymer Journal, Vol. 43 (2007), p. 2117-2126

Effect of Disturbing Conditions in Semi-solid State on Microstructure Evolution of Magnesium Alloy Zhao Hong-Jin1,2,a, Kang Yong-Lin1,b, Wang Zhao-Hui1,c and Du Hai-Liang1,d 1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 2 School of Materials and Chemical Engineering, JiangXi University of Science and Technology, Jiangxi Ganzhou 341000, China a zhj_zyh@sohu.com, bkangylin@mater.ustb.edu.cn, cwwwzhaohui@sina.com, d dhliang2009@126.com Keywords: Magnesium Alloy, Semi-Solid Process, Slurry Making, Refining and Modifying, Disturbing Conditions, Microstructure Evolution.
Experimental Procedure The experimental material was the commercial billet of AZ91HP magnesium alloy with main composition of w (Al) = 8.92%, w (Zn) = 0.6%, w (Mn) = 0.224%, w (Si) = 0.022% and balance Mg.
Xia: Materials Science Forum, Vols 488-489 (2005), p. 303 [3] P.S.
Erickson: Advanced Materials & Process Vol. 134 (1988), p. 53 [4] J.L.
Li, etc: Journal of Rare Earths, Vol. 22 (2004), p.047

And the engineering economic of such material is compared with that of Portland cement concrete.
We can see that the program I is the best program. 3 Development of freeze-thaw resistance materials for the control structure of debris flow and mix design Through comparison and contrast the compressive strength of concrete specimen and mass loss, before or after freezing and thawing, we received two add admixture groups’ higher performance.
Because of large sections project along the Tianshan highway, requires large quantity of raw materials, which must be from the perspective of economic analysis and sets of programs on the feasibility and applicability (Table 6).
Beijing: China Science Press .1983 [2] H.
Journal of Chinese Academy of Sciences Institute.1992, (2):119-123 [5] J.