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Materials and methods The area of the case is located at 123°23′-125°43′E and 39°43′-40°09′N, between Dayang river estuary and Yalu River estuary (Fig. 1).
Oxygen and hydrogen isotopes monitored by Xi'an University of Technology Key Laboratory of MAT253 mass spectrometer.The standard material was selected of VSMOW.
Zeitoun D: Journal of contaminant-Hydrology, Vol. 3 (1998), P.185 [2] Lan.
Clark: Environmental isotopes in hydrology (Science Press, China 2006) [3] Rozanski, K., Araguas-Araguas, L. andGonfiantini, R.: American Geophysical Union Monograph. (1993) [4] LAEA.Guide Book of Nuclear Techniques in Hydrology, Vienna, (1983) [5] Xiang yang TU, Xue ping GAO: Journal of Hydraulic Engineering Vol. 8 (2003), P. 412, in Chinese

Mechanics Analysis And Optimization of The Reachstacker Spreader Yufeng SHU1,2, Yongfeng ZHENG2 (1 DongGuan Polytechnic, China 523808; 2 State Key Laboratory of Digital Manufacturing Equipment & Technology, Huazhong University of Science and Technology, China 430074) hnzyf08@163.com, 94176510@qq.com Keywords: Mechanism, Optimiaztion, Spreader, Strength calculation Abstract: This paper establishes the finite element model of reachstacker spreader, makes static strength calculation under eight typical operating conditions with rated load, based on the calculation results, it points out the weaknesses of spreader and gives some corresponding improvement measures for the drawbacks.
Fig.3 Equivalent stress nephograms of case 1 and case 3 Fig.4 Local stress nephograms of the first three cases Seen from the graphs above, the maximum stress under all cases are less than the material yield limit 600Mpa.
International Journal for Numerical Methods in Engineering, 1976: 243-251
Dynamic analysis and modal test of long-span cable-stayed bridge based on ambient excitation: submitted to Journal of Central South University of Technology (English Edition), (2007), p, 136-139
Applied Mechanics and Materials, 2011:130-134.

There are lots of researches on left-handed materials (LHM) which are mostly realized by using SRR and it has important implication for stealth of targets.
For the refractive index in negative near the resonance frequency of left-handed material unit, it is feasible to reduce the RCS of antenna by adjusting the refractive index of SRR.
Acknowledgment This work was supported by the plan of science and technology Innovation fund program of Xi’an city Grant No.
Journal of Xidian University, 2012.39(3):134-140 [3] Zeng Huiyong,Wang Guangming,Wang Yawei,Liang Jiangang.
Journal of Microwaves,2010, 26( 4) : 84-91 [4] Cao Wenquan.

To be effective as a reinforcing agent for a ceramic-matrix composite material, the strength and the elastic modulus of the second phase must be higher than those of the matrix [2].
Thus, the HAp-ZrO2 composite becomes an important bio-material which has been investigated widely.
Experimental procedure Starting materials were commercial Ca10(PO4)6(OH)2 [HAp: 20-70nm, Kishida, Japan] and ZrO2 +3Y2O3 [30nm, Tosoh, Japan] powder.
Kannan: Materials Science and Engineering Vol.
Nakatani: Journal of Alloys and Compounds Vol. 365 (2004), p.253 [3] S-K Kim, U-G Paik and J-G Park: Journal of Ceramic Processing Research.

Acknowledgement This research is sponsored by the National Natural Science Foundation of China (Grant No. 50875242, 50905163), Key Project of Zhejiang Province Natural Science Foundation (Grant No.
Science China - Technological Sciences, 2010, 53(10): 2867–2877
Advanced Materials Research, 2010, 102-104:573-577
Chinese Journal of Materials Research,2000,14(5):517-523
Materials for Mechanical Engineering, 2007, 31(5):55-58.

It has focus a high degree of material civilization and become a compound social and economic ecosystem.
The outside walls of buildings made of high-tech materials are covered with lights or shiners, which boasts the dazzling night view.
In the recent phase from 1956 till now, a variety of new disciplines have been integrated into urban studies, such as management science, environmental science, biology, ecology, chemistry, physiology, information science, apply physics, hazards studies, and so on.
Introduction to Sciences of Human Settlements [M].
JOURNAL OF BEIJING CITY UNIVERSITY, 2007(5)

Materials and methods Materials.
Aerogels-airy materials: Chemistry, structure and properties.
Chemical Materials, Vol.21(2009), p945–953
Cellulosic aerogels as ultra-lightweight materials.
Cellulosic aerogels as ultra-lightweight materials.

Experiment methods Materials of sample and laser cladding.
Therewith the material's yield of the 1 # sample is bigger, so the material has softening phenomenon [4].
But this material's ability of deformation and hardening is strong.
[2] Rui Vilar: The international journal of metallurgy, Vol.37 (2001), pp.65 [3] Kron, Petra Britt. etc.: Steel Research ,Vol. 68 (1997), pp.186-197 [4] H.J.
Zhou: Press of Science, Beijing 1989(in Chinese).

Purification or contaminants removal utilized adsorbent, small porous materials, which can attract target contaminants [2].
Biomass, biomass waste, or industrial waste as carbon sources of activated carbon were selected due to the availability of raw materials and simple fabrication methods.
Experimental Section Materials.
Prasetyoko, “Review on recent advances of carbon based adsorbent for methylene blue removal from waste water,” Materials Today Chemistry, vol. 16.
Salari, “The superior adsorption capacity of 2,4-Dinitrophenol under ultrasound-assisted magnetic adsorption system: Modeling and process optimization by central composite design,” Journal of Hazardous Materials, vol. 418, Sep. 2021, doi: 10.1016/j.jhazmat.2021.126348

Material and Method The red clay is sampling from Guilin city, Guangxi autonomous region in China.
Journal of Sichuan University (Engineering Science Edition), 43(1) (2011) 17-22
Soil Science Society of America Journal, 44(5) (1980) 892-898
Soil Science Society of America Journal, 65(1) (2001) 35-48
Geotechnical Testing Journal 35(1) (2012) 1-15