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The presence of the fatigue damage implicates some anisotropy of the initially undamaged isotropic material elements.
The principal directions of D determine the directions of the material orthotropy and the principal values, 1D , 2D , 3D affect the initial stiffness.
In order to express the equivalent effect of the element damage variable on the stress state and material properties, the formulation of an average fatigue damage is defined in a similar way proposed by Colombi [5]: ∑∑== ++ = n i np ip ipi ipi ipi ndndnd n nD 1 1 3 , 2 , 1 , ))()()(( 3 1 )( .
Li: Damage mechanics and its applications (Science Press, China, 2002)
Li: Journal of Sound and Vibration, Vol. 261(2003), P.443 [5] Colombi P.: International Journal of Fatigue,Vol.24(2002), P.739

The internal tension is minimal as the material in the mold’s cavity is only exposed to a short and multi-direction flow.
This can be caused by different arrangement of macromolecular chains in the material structure due to the different deformation inside the mold.
However, in case of compression molding, the material is exposed to much lower shearing deformation and in a short multi-directional flow.
Journal of Applied Polymer Science, 123(3), 1437-1454
Journal of Materials Research 19 (1), (2004), 1564-1583

There are a lot of biomass cooking stoves, stove have studied at home and abroad [1], the main raw materials are all kinds of wood, The main ways of biomass ignition includes hot air ignition [2,3,4,5], electric spark, ignition or using combustion gas ignition [5], all these ways have the problem of high ignition time, high ignition power, at the same time, unsteady state of large quantities of combustible ignition smoke gases, fine droplets and solid particles are main pollution sources of biomass burning during use.
Thomas [1] indicate the ignition process of the oxidation reaction causes the surface of the biomass solids and temperature above the ignition temperature of the air, the ignition temperatures of different materials is different , but lower than the ignition temperature of the coal.
Peter, An experimental study of biomass ignition, fuel 82(2003)825-833 [2] Xu Fei, Zhao Lixin, Meng Hai-bo, Biomass pellet fuel hot air ignition performance of experimental research, journal of agricultural engineering，2011,27(7):288-295
The influence of air quantity biomass pellet fuel combustion experimental research, Journal of Shandong Jianzhu University, 2012 [4] V.K.Verma, S.Bram, F.Delattin, Agro-pellets for domestic heating boilers: standard laboratory and real life performance, Applied Energy, 2012，90：17-23 [5] J.
Combustion science and technology

Comparison of Leaching Processes of Gold and Copper from Printed Circuit Boards of Waste Mobile Phone Jianfeng Yin1, Sihui Zhan1, He Xu1,a 1 College of Environmental Science and Engineering, Nankai University, Tianjin 300071, P.R.
Materials and methods Materials and reagents.
Jeong, et al.: Journal of Hazardous Materials, Vol. 178 (2010), p.1115-1119
Chen: Chinese Journal of Environmental Engineering, Vol. 3 (2009) No.5, p. 911-914.

Experiment Experimental Material.
Material used in this study is ZG230-450 steel, chemical composition of this material is shown in Table I, and the shape and dimension of specimen is shown in Fig 1.
Hong, “Analysis approach to durability based on material initial fatigue quality and S-N curve,” Chinese Journal of Aeronautics, 2007, vol. 20, Aug. 2007, pp. 518-523
Jianxin, “Initial fatigue quality of details with a R angle,” Mechanical Science and Technology, vol, 17, Oct. 1998, pp. 729-731
Hillberry, “Probabilistic method for predicting the variability in the fatigue behavior of 7075-T6 aluminum,” AIAA Journal, vol, 48, Oct. 1999, pp:1304-1310 [7] L.

Introduction The crude palm oil (CPO) and mixed crude palm oil (MCPO) were used as raw material to produce the biodiesel in Thailand.
FFA + Alcohol Ester + Water (1) Triglycerides + Alcohol Glycerol + Esters (2) Materials and Methods Materials.
Prateepchaikul: Kasetsart Journal (Natural Science) Vol. 45 (2011), p. 1094 [5] J.C.
Kusdiana: Agricultural Engineering International: CIGR Journal Vol. 12 (2007), p. 99 [7] E.L.
Kresta: Handbook of industrial mixing: science and practice (John Wiley & Sons, Inc., Hoboken, New Jersey 2004)

Introduction Digital inkjet printing has been a popular technology used in various domains from personal DIY output to industrial production and many new materials and techniques were developed in recent years.
Science there was no significant banding defects appeared in this experiment, to perform this analysis we pick two statistic parameters as evaluation terms.
Acknowledgement Project supported by the National Natural Science Foundation of China (Grant No. 60972134).
Wang: submitted to Journal of Advanced Materials Research (2012) [4] D.R.
Tse, PIAS-II™–A High-Performance Portable Tool for Print Quality Analysis Anytime, Anywhere, Journal of the Imaging Society of Japan, Tokyo, Japan, 2007, pp.1-4

Materials and Methods Experiment Materials Reagents and Drugs Coomassie brilliant blue protein kit, offer by nanjin bioengineering research facility, batch number: 20080406; Glutathione- peroxidase kit, offer by nanjin bioengineering research facility, batch number: 20080406; Superoxide dismutase kit, offer by nanjin bioengineering research facility, batch number: 20080406; Glacial acetic acid, offer by Kaifeng Chemical reagent General Factory, batch mumber: 061208; Formaldehyde Solution Department, offer by laiyang shuangshuang Co., Ltd., batch number: 20050228 Experiment Instrument Electric air blowing drying box, offer by Beijing yongguangming Medical instrument factory, Model: 101.
Apicultural Science and Technology,1993,3,:2-5 [2] Xiurong Zhang,Xu Zhang.
Foreign Medical Sciences (Geriatrics), 2007, 28(4): 150-153
Journal of Bee,1991,10:14-16 [5] Yusef S.Inter-heart:A Study Of Risk Factors For First Myocardial Infarction In 52 Countries And Over 27,000 Subjects[C].Stockholm:Presented at European Society of Cardiology Congress,2004
Journal of Guangxi Medical University, 2002,19(3):320-322.

PP has a lot of advantages, such as low price, extensive source of raw materials, superior physical and mechanical properties, light weight, ease of molding, good rigidity, good electrical insulation, et al [1].
We can see that the characteristic absorption peak of PP appear at 1367 cm-1 and 1448 cm-1 from the FTIR of the raw material PP.
Acknowledgements This work was financially supported by Heilongjiang Provincial Department of Education Science and Technology Research Project (NO.12541065).
Journal of Membrane Science, 2014,462(7):50-61
American Journal of Chemistry, 2012,2(5):7

Fig.1 Blade electrolytic simulation principle based on the geometric method Electrochemical machining Electrolytic processing is a method that it corrode the metal materials to achieve processing purposes based on the principle of electrochemical anodic dissolution, there are many advantages that the range of processing is very wide, the surface quality is good, the efficiency of processing is very high and workpiece is without residual machining stress etc.
It have obvious superiority in the fields of difficult cutting material and complex blade shapes.
Acknowledgment The project was supported by graduate starting seed fund of Northwestern Polytechnical University (Z2013028), the Northwestern Polytechnical University Primary Research Foundation (JC201208), the Natural Science Basic Research Plan in Shaanxi Province of China (2012JQ7002) and the National Natural Science Foundation of China (51205320).
Journal of Materials Processing Technology.
Journal of Computational Physics.