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According the mastered data and materials, make the average annual surface water resources deduct the river ecological basic flow and flood discharge, take available surface water resources [4], the product of groundwater recharge and mineable coefficient is available groundwater resources, then calculate the available water resources of different regions and rivers, summarizes its characteristics and law.
The data comes from “Shaanxi Water Conservancy Statistical Yearbook” [5] and” Shaanxi Water Resources Integrated Planning” [6], also references the “Shaanxi Water Function Regionalization "and other materials.
Although regional hydrogeology condition analysis, according to the total groundwater recharge, underground water level observation, actual yield, and other material, carries on simulation and calculation, confirm the mineable coefficient, and then calculate available groundwater resources of region.
Wg,a=ρWg,r （4） Wg,a is available groundwater; ρ is groundwater mineable coefficient; Wg,r is groundwater recharge; According to relevant materials and calculation [6], the North Shaanxi annual average groundwater recharge is 1.04 billion m3, average mineable coefficient is 0.55, so the available groundwater resources in North Shaanxi is 571 million m3, including 458 million m3 of Yulin.
(in Chinese) [4] Y J Fu, J S He, D P Mu, etc, Journal of Arid Land Resources and Environment, vol. 25 (1), ( 2011) , p.107, (in Chinese) [5] Department of Water Resources of Shaanxi Province, Shaanxi Water Conservancy Statistical Yearbook(2001-2010). (2011).

This is used for moving grouting material for borehole sealing and soil-removing from auger bits.
Improving technical-economical parameters for various methods of borehole drilling for construction purposes with vibration impact is related to improving the following processes: – Overcoming friction between the pipe (probe, drilling bit) and soil; – Crushing hard and coherent soil; – Removing clay particle from water-bearing layers and separating such particles from each other; – Using chemical agents for solving chemicals that colmate filters and filter zone of the water-bearing layer in water boreholes; – Fractional laying of free-flowing material for creating sand-gravel filter in the water-bearing layer; – Pumping water with particles from the borehole and pumping chemical agents behind the filter contour; – Moving soil and grouting materials.
Besides, if vibration is applied to the pipe when displacement piles are driven in, this makes it possible to efficiently compact cement mix and improve the load-bearing capacity of piles, both in the material quality and the factor related to increased lateral friction force (Fig. 2).
Conclusion The practice shows that using the vibration method allows not only increasing the labor productivity and decreasing the materials and energy consumption for various operations during construction works and boreholes drilling, but will also often make it possible to significantly change the technology and obtain new results that would not be possible using other methods than vibration.
Comparative Efficiency Investigation of Various Types of Dynamic Influences on the Dipped Pile (2013) World Applied Sciences Journal, 23(6), pp. 817–822

Generally, with a higher bulk density of the material, its shielding ability also increases.
Volume heat capacity is an inverted property of the thermal diffusivity of the material.
Thermal technical characteristics are influenced by the bulk density of the material.
Materials Today Proceedings. 2019, 3(15), 536-545.
Journal of Thermal Analysis and Calorimetry. 2020, 142, 255-266.

Influence of Wiper Height on 7A55 Slabs Lijuan Wang1, 2, a, Hao Zhong3,b, Xiangjie Wang1, c * and Jianzhong Cui1,d 1Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China 2Liaoning Zhongwang Group CO., LTD, Liaoyang 111003 3Suzhou Nonferrous Metal Research Institute, LTD, Liaoyang 11100 awanglijuan@zhongwang.com, bZhong_h@sinr.cn, cWangxj@epm.neu.edu.cn, djzcui@epm.neu.edu.cn Keywords: 7xxx series alloys, slab, crack, microstructure.
Introduction Thanks to the high strength and excellent comprehensive properties, 7A55 plate products, which has higher ratios in Zn:Mg and Cu:Mg can satisfy the comprehensive requirements on weight reduction and speed increase, is the preferred material serve for the top wing structure of air flight to stand tension and stress [1-3].
Progress in Materials Science. 53 (2008) 421–480
Journal of Materials Processing Technology. 214 (2014) 1372–1378.

Experimental Method In this research, the aircraft grease 7014 (product of Chongqing Ichinotsubo) and Nano-materials SiO2 and TiO2 (product of Tianyi Ltd, Changzhin,) were used.
References [1] Libo Wang, Ming Zhang, Xiaobo Wang and Weimin Liu: Materials Research Bulletin: Vol. 43 (2008), p.2220 [2] HuoY Q, Yan Y T and Zhai Y C: Materials Journal: Vol.18-4(2004), p.102 [3] M.
Lubrication Science: Vol.8-4(1996), p.387 [5] Wang L B, Feng D P and Liu W M.
Tribology: Vol.25-2(2005), p.107 [6] Hosoe: Material Tecnology, Vol. 18-3(2000), p. 78 [7] Zhu T B: Grease Technology Encyclopedia.

Material Constitutive Models Concrete Model.
Table 1 Material parameters of reinforced concrete ρ0 [kg/m3] E [Pa] G [Pa] [Pa] T [Pa] EFmin 2440 35.7E9 14.86E9 105E6 10E6 0.01 Shipbuilding Steel Model.
Table 2 Material parameters of shipbuilding steel ρ [kg/m3] E [Pa] ν Yield stress [MPa] Failure strain 7800 2.06E11 0.3 235 0.15 Soil Model.
Acknowledgements This work was supported by National Natural Science Foundation of China No. 50678116, National Key Technology R&D Program No. 2006BAJ13B02, and Tianjin Municipal Major Project of Application Foundation and Frontal Technology Research No. 08JCZDJC19500.
Zheng and H.GAO: Journal of Architecture and Civil Engineering, In Chinese, Vol.24 (2007), p. 1-5 [7] American Association of State Highway and Transportation Official: Guide Specifications and Commentary for Vessel Collision Design of Highway Bridges, Washington D.C, (1991)

Influence of stress concentration on fatigue property of welded joints of 5083 aluminum alloy Jun Yang a, Bo Li b, Qiang Jia c, Yuanxing Li d, Mingyue Zhang e, Hui Chen f, * School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China a944214547@qq.com, bsanpolincoln@163.com,cjiaqiang0510@qq.com,d453117177@qq.com, e906471735@qq.com, f, *xnrpt@163.com Keywords: 5083 aluminum alloy, welded joint, fatigue, stress concentration Abstract.
Experimental materials and methods Experimental materials.
The QSN750 spark direct reading spectrometer for detection of 5083 aluminum alloy sheet and welding wire ER5356, material composition as shown in table 1, table 2.
Feng: The Chinese Journal of nonferrous metals, vol. 14 (2004) no. 1, p. 1895-1900

Z X Y Fig.1 Size of double bottom structure Governing equations In the simulation there are four materials such as air, water, explosive and steel, they equations of state and material model are showed below.
D and p are material constants by experiment.
The material of structures is steel.
Ship Science and Technology. 29(1) (2007) 91-94
Journal of Harbin Engineering University. 29(4) 2008. 326-331

The material for development of the sector chosen was austenitic stainless steel type 304L even though the material of construction of the inner vessel in the reactor is SS316LN, because of its tensile & forming behaviour being similar to that of SS316 LN.
The modelling details, friction factor, surface to surface contact details, size of mesh, material properties were used same as given in the published work carried out by Utpal Bohra et al. [7].
Material is assumed an isotropic and its properties are taken from RCC-MR 2012, Appendix A3.4S [9].
[4] www.autoform.com [5] https://nationalvetcontent.edu.au [6] Nader Asnafi, “ Springback and fracture in v-die air bending of thick stainless steel sheets“ , Materials and Design, 21 (2000), 217-236 [7] Utpal Borah, Shreedhar Venugopal, R.
Venugopal, Baldev Raj, “Estimation of springback in double-curvature forming of plates: Experimental evaluation and process modelling” International Journal of Mechanical Sciences 50 (2008) 704–718

Addemirc Istanbul Technical University, Department of Metallurgical and Materials Engineering, 34469, Maslak, Istanbul, Turkey a ertugb@itu.edu.tr, bboyraz@itu.edu.tr, caddemir@itu.edu.tr Keywords: Hexagonal boron nitride, hot-pressing, fracture toughness, fracture characteristics Abstract.
The strength tests were carried out on Instron universal materials testing machine.
Rangel: Brazilian Journal of Physics Vol. 32 (2002), p. 372-375 [4] M.
Kübler: Ceramic Engineering and Science Proceedings Vol. 18 (1997), p. 155-162 [7] I.
Liu: Diamond and Related Materials Vol. 9 (2000), p. 1734-1738