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Technology and other factors of production to the city central city economic scale is continually expanding, more demand for raw materials, at the same time will produce a lot of waste discharge.
Increasingly accelerated city also will make a large population gathered in the city, a lot of material needs, accordingly, will be discharging more waste [3].
The solid waste at this point might be junk, but to other users or in some specific conditions, waste may become useful and even necessary materials.
Make the best use of existing facilities in urban area, to turn material resources to good account.
Journal Of Heilongjiang Hydraulic Engineering College, Vol. 2 (2005), p.54-56 [2] W.

Using discrete element theory, able to compensate for the previous theory of finite element analysis is insufficient; it can calculate the material occurs discontinuously large deformation, also from the angle of view of observing subtle interplay between materials within the particles.
Study on Segregation of Pavement Materials Based on Granular Characteristics [D].
Study on couple stress and shear band development ingranular media based on numerical simulation analyses [J].International Journal ofEngineering Science.2000, 38:1713-1740
[8] Ohara Takayuki.Development and Application of Discrete Element Simulation System for Mixing Materials[D].

Bulk materials based on supersaturated (Ti,Al)N solid solution are also very attractive for a wide range of applications.
These materials may be fabricated by the powder metallurgy approach.
Gilman: Science Vol. 274 (1996) p. 65 [11] J.S.
Cho: Journal of Alloys Compounds, Vol. 194 (1993) p. 287 [14] J.
Lu: Material letters Vol. 194 (2002) p. 421 [15] Gy.

Sabri Kayali2,b and Huseyin Cimenoglu2,c 1Gebze Institute of Technology, Department of Materials Science and Engineering 41400 Gebze, Kocaeli, TURKEY 2Istanbul Technical University, Department of Metallurgy and Materials Engineering 34469 Maslak, Istanbul, TURKEY aatar@gyte.edu.tr, bkayali@itu.edu.tr, ccimenogluh@itu.edu.tr Key words: Boriding, Borides, Titanium, Ti6Al4V, Wear, Water.
The contact surfaces of the ceramic balls used as a counter-face material were also examined by a light optical microscope (LOM).
As can be seen in Figure 5, the contact surface of Al2O3 ball was rough and covered with materials transferred from the as-received alloy and appeared as dark region within the wear scar.
Bloyce: Surface engineering of titanium alloys for wear protection (Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Vol. 212, 1998) [7] H.

Due to its ease of reuse and lightness, magnesium alloys were termed as an appealing material in engineering applications.
Calcium was revealed as an essential alloying material in magnesium alloy by Azeez, etal, (2021) due to its creep properties and the development of a thermally stable second state at higher temperatures.
Calcium prepared from cow bone was employed for Mg-Al alloy grain refinement in this research. 2.0 Materials and Methods (a) This investigation employs alkaline hydrolysis for the extraction of calcium from cow bone. 3 kilogram of cow bone (Fig. 1a) was purchased from Abattoir.
The materials get tougher and harder when the calcium content rises over 0.4 (wt.%) due to the production of grain borders edges, leading to a significant ductility level, characterized by prolonged plastic deformation prior failure (Fig. 5).
Sanusi “Modification and Pore Distribution in Cast Al A356 Alloy Using WC Nanoparticles,” An International Journal of Biological and Applied Sciences", LAUTECH Ogbomoso, Special Edition, 2018, Vol.23(2) pp. 116-121.

Fig. 3 Simplified model of LED street light Chart1 The Thermal performance parameters of LED Packaging materials High-power LED street light Main parameter gross power 180W The number of LED chips 180 The size of LED chip 1mm×1mm×0.25mm The size of PCB 25mm×25mm×2mm The size of the vapor chamber 440mm×120mm×7.5mm The thickness of lamp shell 3mm The size of heat tube lateral section 4.5mm×4.5mm 1.3 Decision of boundary conditions In actual application, this light is installed in the ambient air, which is of natural convection.
As a result, with a supposed environmental temperature of 25˚C, 0.8W thermal power is imposed on the chip to define the nature of all materials, as shown in Chart 2.
Acknowledgements This work was financially supported by the Program of Science and Technology of Hunan Province; (Project No. 2011GK2026) Author: Wen-wu Tang , professor, TEL: 13973331895, E-mail: twwtwwt@126.com Corresponding author:Guang-xiao Kou, professor, E-mail: 443849697@qq.com References [1] WANG Yaoming, WANG Demiao, SU Da.
Journal of Jiangnan University, 2009, 8(1): 58-61
Thermal analysis of interface materials in High-power Light-emitting diode packages[J].

Microstructure and Wearability of Surface Coating of Fe-based Amorphous Core Welding Rod Bin Wang1,a, Zhen Yang1,b, Dongmei Zhou1,c, Peishan Zhou1,d (1 College of Material Science and Engineering,Southwest Petroleum University, Chengdu 610500,China) awangbincn89@163.com, byangzhen0431@163.com, czdmjiayouzaza@yahoo.com.cn, d361952353@qq.com Keywords: Fe-base amorphous, metal arc welding, coating, microstructure, wearability Abstract: Based on the classic formula of J507 coated electrode，the welding rods were prepared by adding Fe41Co7Cr15Mo14C15B6Y2 Fe-based amorphous alloy or HO8A as welding core.
Because of the good performance of the amorphous alloy, researches are concentrate on the surface coating of non-crystalline material[4-5] and its connecting technique[6-7].
Table 1 coating formula unit:[ wt.%] stuff marble fluorspar Titanium dioxide Soda ash mid-carbon Fe-Mn formula 44 24 2 1 4 stuff 45ferrosilicon ferrotitanium quartz silicate cmc formula 2.5 13 7 sodium silicate 0.1 (the gravity coefficient of coating kb=0.4) Table 2 welding rod sizes unit:[mm] Welding core material Welding core diameter Welding rod length Clamp length Fe-base amorphous 2.0 100 8 H08A 2.0 250 10 According to table 1，the Tl-25-type welding rod coating machine, made by the Electrical and Mechanical factory of Shenyang University of Technology, was used to suppress the welding rod and the magnetic eccentric instrument of welding rod was used to measure its eccentricity.
In order to avoid the crystallization tendency of Fe-based amorphous materials, the current must be low.
Journal of Materials Heat Treatment, 2003,24(4):59-63.

Numerical Simulation Method Ascertaining Slope Stabilization Anti-slippery Pile's Basic Parameters Wenjuan Feng1, a , Xiaodong Ju1,2,b and Zhengsheng Zou1,c 1Civil Engineering School, Henan polytechnic University, Jiaozuo, Henan 454000 2Institute of Rock and Soil Mechanics, Chinese Academy of Sciences , Wuhan, Hubei 430071 afengwenjuan@hpu.edu.cn, bjuxiaodong@hpu.edu.cn,czouzs@hpu.edu.cn Keywords: anti-slide pile, slope, numerical simulation, the position of anti-slide piles.
The safety factor of landslide is calculated according to shear strength reduction theory in the numerical simulation software which is using to carry out strength reduction of materials parameters of landslide also when we designed the landslides state.
The spacing and the section acreage of anti-slide pile that match with The scale of landslide are determined and reduced the material parameters of landslide then we could obtained two curves Fig. 1 and Fig. 2 through alter the position of pile continuously to trial calculation.
Fig. 1 Shearing force change curve of pile Fig. 2 Safety factor change curve The slop is new landslide that under these conditions which are setting pile in stopping slide sect of landslide and reduce the materials parameters upper slop was in a unstable state.
Fig. 4 and Fig. 5 are obtained by trial calculation after reduced the materials parameters of landslide 21 percent.

Polysulfonamide, a kind of aromatic polyamide fabric, with high performance on mechanical strength, flame resistance, heat resisting, chemical resistance, damp proofing and electric isolation, is a good kind of material for camouflage clothing [5-7].
The Experiment of Camouflage Printing on Polysulfonamide Fabric Materials.
Polysulfonamide fabric is good material for military camouflage clothing.
Acknowledgements This work was financially supported by the Changzhou Key Laboratory of New Textile Materials (CM2008304).
Wang: Journal of Shanghai University of Engineering Science Vol. 24 No. 2 (2010), p.158 (in Chinese)

Existing research[1-6] shows that most researchers only considered the single factor that is window-wall ratio, which affect the building energy consumption, while they didn’t consider the influence of other factors such as building orientation, climate zone, building type, building orientation, structure type, building materials etc.
Fig. 1 Office building standard layer of the floor plan Building materials and related parameters are detailed in Table 1.
Table 1．Relative parameters of building materials Name Material Heat transfer coefficient(W/m2·k) Exterior wall Alkali resistant fiberglass mesh cloth anti-crack mortar (5.00 mm) + semi-rigid glass wool board (40.00 mm) + coal dry stone masonry (200.00 mm), inorganic insulation mortar (25.00 mm) 0.560 Partition Cement mortar (20.00 mm) + coal dry stone masonry cement mortar (200.00 mm) + cement mortar (20.00 mm) 1.770 Door Plywood (3mm) + fire prevention board (6mm) + pine (30mm) + fire prevention board (6mm) + plywood (3mm) 2.610 Window PA break heat aluminum alloy (double silver Low-E hollow glass window (12A) 2.710 Floor Cement mortar (20.00mm) + reinforced concrete (120.00mm) + cement mortar (5.00mm) 1.280 Energy consumption simulation 2.1Orientation impact on energy consumption of buildings In order to find the optimal orientation under the condition of the minimum energy consumption, 14 orientation groups were taken to the comparison by 5° arithmetic，as shown in Figure 2.
Acknowledgements The research was supported by the funding of the “Twelfth Five-Year” National Science and technology support program.
Journal of HV﹠AC,2006,36(6):1-5 [6] Xing Su, Xu Zhang, Environmental performance optimization of window-wall ratio for different window type in hot summer and cold winter zone in China based on life cycle assessment [J].