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In principle, all materials and alloys used for deep drawing or stamping can be used for hydroforming applications as well [19].
Takuda: J. of Materials Processing Technology Vol. 177 (2006), p. 676-679 [4] K.
Sciences Vol. 44 (2002), p. 2427-2446 [7] H.L.
Hashmi: J. of Materials Processing Technology Vol. 103 (2000), p. 333-342 [10] T.
Cescotto; Journal de Physique Vol 3(1) (1991), p. 751-757 [12] W.

Introduction Most raw materials, mineral fuels, and fossil fuels are limited and become scarce.
Materials that cannot be integrated must be completely recycled in the production processes.
Process industries are one of the largest producers of waste materials which are mostly released into the environment after partial treatment where toxic materials are usually transferred in a less harmful form.
Eliminate waste materials at their source wherever possible. 2.
Journal of Pharmaceutical Innovation,23-35

Experimental method Materials The concrete mixtures were made in the Construction Materials Laboratory using the following materials: Cement: normal Portland cement of Saima in Ningxia was used, the chemical analysis, mineral composite and physical properties of which are given in Table 1andTable 2.
Three level of water cementitious materials ratio are 0.32, 0.37, 0.42; six factors are water cementitious materials ratio, gangue, fly ash, slag, silica fume and admixtures.
The mix design ratio of the concrete was cementations materials/sand/gravel/water by weight.
The mixtures proportions of air entrainment 0.02% by weight of the cementations materials, the mix proportions of water-reducing 0.3% by weight of the cementations materials.
Construction and Building Materials, Volume 11, Issue 1, February 1997, PP. 57-63

PVC and other polymer materials are also used for water transportation.
All materials were of at least 99.9% purity.
Jason Locklin, ‘A new anti-microbial treatment that can make clothing – including smelly socks – permanently germ-free’, ACM Journal of Applied Materials and Interfaces, July 2011
Sekhar, Comparative Wear Behaviour of Aluminum Alloys, Materials Science Letters, 5 (1986) 1186
Sekhar; Journal of Materials Science, DOI: 10.1007/BF01113760, 20, Number 10 (1985) 3535-3544

Reinforced concrete is one of the traditional materials for the chimney with the advantages such as high durability, good plasticity, high temperature-resistance, and easily obtained from local resources.
In addition to the above three basic structures, composite structure can be applied in the solar chimney by taking full advantage of different materials.
Acknowledgements The authors thank the Chinese National Science Foundation for supporting this work under Contract No. 50638050 and 50708092.
Yuan: Journal of the International Association for Shell and Spatial Structures, Vol. 47(2006), p.111－124
Schlaich, Mike: Journal of the International Association for Shell and Spatial Structures, Vol. 45(2004), p.93-98

Materials and Methods 2.1.
T-test was used to check for significant differences from the reference content, and accuracy were checked through 10 determinations of the certified reference materials.
The Science of the Total Environment.312(2003)47-58
Microchemical Journal. 79(2005)125-132
Microchemical Journal. 82(2006)168-173

Materials and methods Sludge.
Liu, Factors of effecting hydrogen production from anaerobic fermentation of excess sewage sludge, Environmental Science, 26 (2005)98-101.
Liu, Effects of pH on biohydrogen production from sewage sludge with alkaline pretreatment, Chinese Science Bulletine, 50(2005) 2734-2738.
Liu, Influential factors of fermentative hydrogen production from thermally treated sewage sludge, The Chinese Journal of Process Engineering, 9(2009) 47-52.
Zhao, Effects of initial pH on hydrogen production from acid pretreated municipal sludge, Environmental Science, 29(2008) 2628-2632.

Pipe Length Limit Analysis to Tunnel Vertical Well of Natural Gas Pipeline Xin Tian 1, a, Chi-yuan Ren 2,b 1 Apply Technology College, Southwest Petroleum University, Nanchong 637001, China 2 College of Sciences, Southwest Petroleum University, Chengdu 610500, China aemail:yuxin0824@126.com, bemail:renchiyuan@163.com Keywords: Stress analysis, Natural gas pipeline, Tunnel vertical well, Limited length.
For plastic materials, failure in the form of yield, so the ultimate stress for the yield limit, namely:for brittle materials, failure in the form of fracture, so the ultimate stress for the ultimate strength, namely: In order to ensure the strength of security components, the danger point at the maximum working stress is not allowed to (or near) the material ultimate stress.
Material allowable stress values may be the ultimate stress divided by a number n to be greater than 1, namely: Where, n is called the factor of safety, according to a variety of materials and their different working conditions from the specification or design manual found. 2.2.3 Calculations of pipe strength The strength calculation must considerate the following factors, including gas pipeline wall thickness selection, pipe stress calculation, and strength.
Mainly refers to the basic parameters of control system components in the calculation of the temperature of the pipe, installation of temperature,, allowable stress, material grades, elastic modulus, Poisson's ratio, medium density, density of pipe material, insulation thickness and density.
Journal of Beijing University of Chemical Technology, 30,66-68(2003) [6] Tang, Y.J.: Safety evaluation method for pipe stress analysis.

However, the formidable cost of those carbon materials and complexity of material preparation procedures restrain them from practical applications.
Cheap and abundant carbon materials are necessary for further progress of Li-S battery technology onto its commercialization.
Polypropylene film Cellgard 2400(Shanxi Li-Zhi-Yuan Battery Materials Co.
Wan, Lithium-sulfur batteries: electrochemistry, materials, and prospects, Angew.
Wang, Updated metal compounds (MOFs, -S, -OH, -N, -C) used as cathode materials for lithium-sulfur batteries, Adv.

The materials for two kinds of fiber coil framework are considered as duralumin whose heat conductivity is 130W/(m.K) and specific heat is 0.22cal/(g.℃).
JOURNAL of CHINESE INERTIAL TECHNOLOGY, 2006, 14(2):82-84.
The Characteristic Analyses and Thermal Balance Research of The Fiber Optic Gyroscope [D].ChangChun University of Science and Technology Press, 2006. 26-55.
JOURNAL of CHINESE INERTIAL TECHNOLOGY, 2005, 13(1).5-9.
JOURNAL of CHINESE INERTIAL TECHNOLOGY, 2004,5: 43-48.