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., National Yunlin U. of Science & Technology Touliu, Yunlin 640 Taiwan *Advanced Chip Engineering Technology Inc.
The solder joint is subjected to the inelastic strain that is generated during the temperature cycling test due to the thermal expansion mismatch between the various materials of the package and PCB (printed circuit board).
The fatigue life of WLCSP for three SBL materials by both Coffin-Manson Equ, and Modified Coffin-Manson Equ, is shown in Table 2.
R. and Chang C., "Solder Joint Reliability of Wafer Level Chip Scale Packages (WLCSP): A Time-Temperature-Dependent Creep Analysis, "Journal of Electronic Packaging, Vol. 122, pp. 311-316, 2000
J., "Solder Fatigue Prediction Using Interfacial Boundary Volume Criterion," Journal of Electronic Packaging, Vol. 125, pp. 582-588, 2003

In recent years, University of Science and Technology Beijing has developed a cold bending CARD flexible system, cold bending CARD expert system [9].
Cold formed CAD and CAM technology building doors and windows and metal building materials in March 2006 [7] Zhang Lele, Tan Nanlin, Liu CAI.
Longitudinal and shear strain development in cold roll-forming, Journal of Material Processing Technology, 1996, 60, 219-224 [18] Walker T R, Pick R J., Development in the geometric modeling of an ERW pipe schlep, Journal of Material Processing Technology, 1991, 25, 35-54 [19] Senanayake R S,Cole I M, Thimvamdchelvan S.
A computer algorithm to link a finite-element package to the CAD/CAM of cold roll-forming Journal of Material Processing Technology, 1992, 31, 277-293 [21] Farzin M, Tehrani M S, Shameli E, Determination of buckling limit of strain in cold roll-forming by the finite element analysis, Journal of Material Processing Technology, 2002, 125, 626-632 [22] Barnet M, Mguil S, Pol P.
Modelling of a roll-forming process with a combined 2D and 3D FEM code, Journal of Material Processing Technology, 1998, 80, 213-219 [23] Hong S,Lee S,Kim N, A parametric study on forming length in roll-forming, Journal of Material Processing Technology,2001,113,774-778 [24] Kiuchi M,Wang F Z.

Materials and Methods Preparation of Samples.
Acknowledgement This work is supported by the Science and Technology Project of Science and Technology Department of Hunan Province, China (2012NK2002).
Iida: Journal of Archaeological Science, Vol. 35 (2008), p.1240
Lu: Journal of Anhui Agricultural University, Vol. 38 (2011) No.53, p.453
Kajita: Wood Science and Technology, Vol. 37 (2004), p.349.

Particularly, owing to tetragonal distortion, those materials are exhibiting dielectrical properties under application of external electric field as a result of having net permanent dipole moment.
Small, homogenous and spherical particles are important criteria for dielectrical applications because of the shape and morphology of particles can affect the chemical and physical properties of materials [4].
Methodology and Materials Step 1: Preparation of NiTiO3.
Payen: Chemistry of Materials Vol. 7 (1995), p. 2168
Lopez: Materials Letters Vol. 45 (2000), p. 340

The substrate material is Si and six PZT-4 piezoelectric ceramics are placed on the top channel wall.
In order to produce pure traveling wave, the suitable substrate material and energy-absorbing material can be considered [3].
Acknowledgements This work was financially supported by China National Natural Science Foundation (51075243).
European Journal of Pharmaceutical Sciences, 2003, 20(3):149-171 [2] YIN F, FUNG Y C.
Journal of Fluids Mechanics, 1971, 47: 93–112 [3] YOSEPH B C, ZEN S C.

The moisture content level is about 10% after the materials are mixed together.
Acknowledgment Financial support for this study is from Harbin Science and Technology Council, Special Funds for The Creative Talents of Science and Technology Research Project (2010RFXXG005).
Science Press,Beijing 2010)
[4] LUO R C, LIN M, SCHERP R S: IEEE Journal of Robotics and Automation, 1988, 4 (4), pp. 386–396
[5] SONG Kaichen, NIE Xili: Chinese Journal of Mechanical Engineering, 2006, 19(3), pp. 451–454.

CaCO3 is one of the materials that can be used in this fabrication as an additive.
The materials used in this experiment.
Herbert, Electroceramics: Materials, Properties, Application, second ed., 2003
Sulaiman, Chemical Composition of Clays for Pottery in Malaysia, A Review, Journal of Tropical Resources and Sustainable Science, 3 (2015) pp 144-153
Allen, Pottery Science: Materials, Process and Products, Ellis Horwood Limited (1986) [5] R.L.

A Numerical Simulation of Surface Deformation Due to Ore Drawing Perturbation Hongshuang Li1,a, Jianhua Du2,b and Cuifeng Du3,c 1 School of Civil and Environment Engineering ,University of Science and Technology Beijing, Beijing 100083，P.R.CHINA 2 School of Civil and Environment Engineering ,University of Science and Technology Beijing, Beijing 100083，P.R.CHINA 3 School of Civil and Environment Engineering ,University of Science and Technology Beijing, Beijing 100083，P.R.CHINA a li_hongshuang@126.com, b magicdna@126.com,cducuifeng@126.com Keywords: covering layer；loess；PFC；ore drawing Abstract.
Correctly select the material parameters in PFC2D model is the key to simulate mining process of natural caving.
Reseach on the Mechanism and Controlling Method of the Underground Debris Flow in Jinshandian Iron Mine，Beijing：University of Science and Technology Beijing(2010) [4].
PFC and Application Case of Caving Study，Chinese Journal of Rock Mechanics and Engineering，vol.25, pp.1927-1931(2006) [5].
Wang Lianqing；Gao Qian；Wang Jianguo；Numerical simulation of natural caving method based on particle flow code in two dimensions，Journal of University of Science and Technology Beijing，vol.29, pp.557-561(2007) [6].

The material is much different from homogeneous and continuous soil [1-3], and poses difficulties in situ sample acquisition and laboratory geomaterial tests.
Alternatively, the assembly can be assumed that represents a material of low initial porosity.
Acknowledgements The research work is supported by the china postdoctoral science foundation (20090461003), the natural science foundation of Hubei province (2008CDB052), the science research project of the educational commission of Hubei province (Q20081302) and the director foundation of the key laboratory of geological hazards on three gorges reservoir area of ministry of education (2008ZRJ03).
International Journal of Rock Mechanics and Mining Sciences, 2004, 41 (3): 494-499 [2] Xinhua YOU.
International Journal of Rock Mechanics and Mining Sciences, 2008, 45(5): 749-762 [4] PFC2D (Particle Flow Code in 2 Dimensions).

The regularity of symptoms of “Mesophyll collapse” as well as the difference of metabolic enzymes (Being related to the chilling injury) between healthy fruits and diseased fruits in storage is being analyzed in this paper so as to provide preliminary basis for clearly regulating the relevant metabolic pathway of “Mesophyll collapse”. 2 Materal and Method 2.1 Plant Materials and Sample Preparation.
One activity unit is defined as: Under the measured conditions, 1g fresh weight of test materials causes the absorbance value changes of 0.001 in 1min. 3 Results and discussion 3.1 Symptoms and disease regularity of “Mesophyll collapse” of Lingwu Long Jujube There are no symptoms of disease to Lingwu Long Jujube under the normal temperature conditions, while the symptoms begin to occur in 7~10 days after the low temperature pre-cooling or storage.
Ningxia Journal of Agriculture and Forestry Science, 2002, (3): 33-34
Journal of Shanxi Agricultural Sciences, 2000,28 (3):75-79
Hubei Agricultural Sciences, 2009,48 (2): 338-340.