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Tab.1 Basic size the oil pipeline in DN and ASME (Inner pressure 5000psi，material grade X65） DN Inner diameter / inch Outside diameter / inch Wall thickness / inch NPS / inch 200 7.625 8.625 0.5 8 250 9.5 10.75 0.625 10 300 11.374 12.75 0.688 12 350 12.5 14 0.75 14 400 14.25 16 0.875 16 450 16.124 18 0.938 18 500 17.876 20 1.062 20 According to the Fig.2 and Fig.3[5], calculating process of the specification parameter of the 8inch lenticular gasket is as follows： (1) Calculations of d2, d5, x Inner diameter of an 8inch flange : di=409.5mm Wall thickness: t=23.8mm d2 =565mm d5 =530mm x=48mm PS: d2, d5, x is ensured by the proportional relation of the correspond value of inner diameter of the standard flanges.
During the butt jointing of pipelines, the gaskets are interchangeable parts, and flanges are reusable parts, so the material of flanges should be harder than the gaskets to guarantee the soft one can reach the yield limit and avoid the excessive deformation of flange seal surface.
In the seal material of contact surfaces, the gasket is made by soft material, so the Rc value should be assigned as yield strength(205 Mpa) of stainless steel 316.
Acknowledgment The study was supported by the National Natural Science Funds of China (51105088).
Journal of Astronautics.

In the design of power screws, the bearing pressure depends upon the materials of the screw and nut, relative velocity between the nut and screw and the nature of lubrication.
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., 13, Yokota 8, Goichi, Mihama-cho, Mikata-gun, Fukui, 919-1205, JAPAN 3 Kobe Material Testing Laboratory Co., Ltd., 1007-1, Tome-cho, Hitachi-city, Ibaraki, 319-1231, Japan a maekawa@inss.co.jp, boumaya.toru@c2.kepco.co.jp, cnoda@inss.co.jp, d stakahashi@inss.co.jp, et-saito@kmtl.co.jp Keywords: Austenitic stainless steel pipe, Butt-welded joint, Residual stress distribution, Neutron diffraction technique, Finite element method.
Acknowledgement Residual stress measurements by the neutron diffraction technique were conducted under the trial use program of the Radiation Application Development Association (RADA) under the sponsorship of the Ministry of Education, Culture, Sports, Science and Technology in 2007 and 2008.
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Identifying and examining some of these inspirations in the context of solar energy conversion using organic materials is one of the main challenges of this century. [3] In natural photosynthesis, light absorption by antenna complexes is followed by efficient charge separation across a membrane via photosynthetic reaction center proteins (RCs).
The architectures of photosynthetic systems have indeed motivated the design of light-active supramolecular assemblies. [29,30] Using the principles of natural light harvesting may help inspire ways of increasing the capture of solar energy, for example, by materials used for solar fuel production.[28] Bio-inspiration is however a complicated aim: given the multiplicity of functions, natural systems have accumulated complexity, often obscuring the details of the key design principles.
Quantum effects in biology have been posited in many processes ranging from photosynthetic energy transfer, described here, to olfaction, magnetic sensing and even consciousness. [31] Although at the atomic level all the biological materials can be considered ‘quantum’, the extent to which quantum mechanics may really affect the mechanism, dynamics and efficiency of biological processes in physiologically relevant conditions has been seen for many years mostly as a negligible curiosity.
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Material and Method Materials Coconut shell (CS) waste was utilized in this study which was collected from Bravo Green Sdn.
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According to the reservoir geological characteristics and well conditions, the paper studied on fracturing scale determination, the perforating section, and the optimization of fracturing material selection, and application.
Acknowledgements This work was financially supported by the Oil & Gas National Science and Technology Major Project (2011ZX05006) and Sichuan Youth Science and Technology Innovation Research Team(2011JTD0009).
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The crankshaft exists some defects in raw material, forging, heat treatment and so on, which can decrease the intensity and easy to cause failure.
Acknowledgments This work was financially supported by Major Subject of National Science & Technology of China (Grant No. 2011ZX04014-011), Graduate Student Research and Innovation Program of Jiangsu Province of China (Grant No.
CXZZ11_0234) and Excellent Doctoral Thesis Program of Nanjing University of Science & Technology of China.
Journal Harbin UNIV.
Research on the dynamic property and fault diagnosis of punch machine[D], Wuhan： Huazhong University of Science & Technology, In Chinese