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Recovery of waste PCBs is an important subject not only from the point of waste treatment but also from the recovery of valuable materials.
Recently, we apply this microorganism leaching approach to the extraction of electronic waste material and got very good results.
Material and methods The elements in PCB scraps used in this study are Cu:25.06; Fe: 0.66; Pb: 0.80; Zn: 0.04; Ni: 0.0024.
References [1] Jirang C., Eric F.: Journal of Hazardous Materials Vol.
，Jinghe, Ch.,: Hydrometallurgy(in Chinese) Vol. 83(2006), p.77 [7] Guiying, Zh., Renman, R., Jiankang, W., Biao, W.,: Journal of University of Science and Technology Beijing(in Chinese) Vol. 30(1) (2008), p.11 [8] Jiankang, W., Renman R., Jinghe, Ch., Jianhui, W.,: Chinese Journal of Rare Metals (in Chinese) Vol. 50(5) (2006), p.661 [9] Mingling, W., Renman, R., Yonggong, Zh,, Jiankang, W.: Nonferrous Metals(in Chinese) Vol. 59(3) (2007, p.43 [10] Tao Y., Zheng X., Jiankang W., Limei Y.: Chinese Journal of Environmental Engineer (in Chinese) Vol. 3(5) (2009) p.915

One of the processes that allows texturization of materials with great hardness is sinker electro discharge machining.
None of the machining methods, no matter how precise, can produce a completely flat surface in conventional materials.
Salguero, Combined Manufacturing Process of Copper Electrodes for Micro Texturing Applications (AMSME), Materials. 14 (2021)
Maropoulos, EDM electrode manufacture using rapid tooling: A review, Journal of Materials Science. 43 (2008) 2522-2535
Subramanian, Feasibility studies on the production of electro-discharge machining electrodes with rapid prototyping and the electroforming process, Journal of Materials Processing Technology. 90 (1999) 231-237

Experimental Section Materials and Sample Preparation.
Annual Reviews in Materials Science Vol. 19, (1989), p. 295
Y., et al: Journal of Material Sciences Letter Vol. 21, (2002), p. 345 [7] Clement O.
In Chinese [9] Xu Cheng, Qijia He, Aimin Zhang: Polymer Materials Science and Engineering Vol. 18, (2002), p.137.
In Chinese [11] Mingqiang Zhong, Junhua Liu, Xiaosu Yi: Polymer Materials Science and Engineering Vol. 17, (2001), p. 39.

Experimental Research on Hot Working Property of Monel K-500 Alloy Xiaoping Zhang1, a, Wenzhang Chen2, b 1Taiyuan University of Science and Technology, Taiyuan 030024, China 2SANY Heavy Industry Co.
Compared with the metal and non-metal materials such as stainless steel, Monel alloy has corrosion resistant capabilities to various forms of corrosion damage such as localized corrosion, comprehensive corrosion and stress corrosion in various corrosive environments, such as electro-chemical corrosion and chemical corrosion environments[1,2].
Grover: Journal of Alloys and Compounds, Vol.426 (2006), No.1, p.235
Rao: Metallurgical and Materials Transactions A, Vol.24(1993), No.12, p.2709
[5] Guang Yang, Jinquan Fu and Zhihong Feng: Journal of Liaoning Institute of technology, Vol.2(2000), No.3, p.40 (In Chinese)

Damage detection analysis of simple beams based on strain mode Xiang Guo1, a, Jiaquan Wu1,b,Kun Ma1,c 1Faculty of Science,Kunming University of Science and Technology, Kunming, Yunnan, China, 650093,China aguoxiangwin@yahoo.com.cn,bwjqlhy@sina.com,cmakun_box@sina.com Corresponding author: Kun Ma, School of Science, Kunming University of Science and Technology,makun_box@sina.com Keywords: Simple supported beam, Displacement mode, Strain mode.
As the initial conditions of simple beam, so from equation (3) available: (4) So displacement mode shapes is: (5) As the relationship between strain and deflection of the mechanics of materials: (6) Where y is the distances between the measured position and neutrosphere, u is deflection of the mechanics of materials.
Principle of structural damage Damage is due to the role of the external load and the environment led to micro-structural defects (such as micro-cracks, micro voids, etc.) caused by the degradation process of materials or structures.
Journal of Jinan University (Natural Science) 2008,29(5)
Journal of Baotou University of Iron and Steel Technology,2005,24(1)95-98

Mechanism Analyses of Structure Formation of Cement Asphalt Emulsion Mixtures Zhenjun WANGa, Qiong WANGb and Guangying YANGc School of Materials Science & Engineering, Chang’an University, Xi’an 710061, P.
The influences of dosages of two binding materials on the mixtures are different from those on hot-mix asphalt concrete.
Ling: Journal of Tongji University Vol. 26(1998), p. 674
Al-Qadi and H.Gouru: Journal of Transportation Engineering Vol. 120(1994), p. 94
De Gennes: Soft Matter and Rigid Science (Hunan Science and Technology Press, China 2000) (in Chinese) [6]Z.C.Ouyang: Science Vol. 51(1999), p. 36

Results show that the erosion-wear mechanism is that erosion is mainly micro-cutting role at low erosion-angle, materials hardness is decisive factor, and erosion is mainly compression deformation at high erosion-angle, materials toughness plays decisive role, as the coating is low hardness and high toughness materials, which is eroded more seriously at low erosion-angle.
The reason is that hardness of materials is the main factor to determine the erosion-resistant properties at low erosion-angle, and toughness of materials is the main factor to determine the erosion-resistant properties at high erosion-angle, the coating is plastic materials, its hardness is low and toughness is high, therefore the erosion mass-loss of the coating at low erosion-angle is greater than at high erosion-angle.
Erosion study and different materials affects by coal ash particles[J].Wear.1987(52)
Mechanism of Abrasion to Material by High-velocity Sediment-laden Flow and Effect of Aeration on Abrasion Rrsistance[J].Journal of Water Resources and Architectural Engineering, 2006,4 (1) : 1-5
Journal of Hydraulic Engineering, 1989 (7) : 60-66

Materials & Methods Materials All reagents were of analytical purity and were used without further purification.
From the result, the band gap of 2.267 eV was clearly observed for TiO2-Ag/Ag3PO4 by following which was much smaller than pure TiO2 materials (ca. 3.2 eV).
Hunte, An overview of semiconductor photocatalysis, Journal of Photochemistry and Photobiology A: Chemistry 108 (1997) 1–35
[4] Chen Shifu, Zhang Sujuan, Liu Wei, Zhao Wei, Preparation and activity evaluation of p–n junction photocatalyst NiO/TiO2, Journal of Hazardous Materials 155 (2008) 320–326 [5] M.M.
Ismail, Facile synthesis of mesoporous Ag-loaded TiO2 thin film and its photocatalytic properties,Microporous and Mesoporous Materials 149 (2012) 69–75 [7] Sher Bahadur Rawal, Sang Do Sung, Wan In Lee, Novel Ag3PO4/TiO2 composites for efficient decomposition of gaseous 2-propanol under visible-light irradiation, Catalysis Communications 17 (2012) 131–135 [8] Jing Cao, Bangde Luo, Haili Lin, Benyan Xu, Shifu Chen, Visible light photocatalytic activity enhancement and mechanism of AgBr/Ag3PO4 hybrids for degradation of methyl orange, Journal of Hazardous Materials 217–218 (2012) 107–115 [9] Ruoyu Liu, Peiguang Hub, Shaowei Chen, Photocatalytic activity of Ag3PO4 nanoparticle/TiO2 nanobelt heterostructures, Applied Surface Science 258 (2012) 9805–9809

Rammed earth is a technique for building walls using the raw materials of earth, chalk, lime and gravel.
They determined the form of a building according to its functional requirements and the materials to be used.
It’s also fireproof, soundproof and avoids the dilemma of deforestation and toxic materials.
International Journal of Physical Sciences.
International Journal of Physical Sciences.

Thermo- Structural Analysis of CLAM steel and SS316L in the First Wall for ITER during Thermal Cycling Fubin LIU 1, a, Man YAO 1, b, Pengbo Zhang1,2, c and Jijun Zhao2, d 1School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China. 2College of Advanced Science and Technology and School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China.
Usually FW material composes of the following three metals, as shown in Fig. 1: Be armor used as a plasma facing material, Cu-alloy (CuCrZr) layer as a heat sink one, and 316L austenitic stainless steel (SS316L) as a structural material.
By comparative analysis of temperature and strain distribution with high surface heat flux of 1.5MW/m2 for CLAM steel and SS316L as the structural materials the conclusion was drawn that the thermo-structural property for CLAM steel is better than that of SS316 at the same condition.
Li: Journal of Nuclear Materials.
[6] Jinnan Yu, Qunying Huang and Farong Wan: Journal of Nuclear Materials.