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A few months later, the German astronomer Schwarzschild found the material is static equation of spherically symmetric distribution.
According to his solution, obtained with the Laplace same conclusion: that the radius less within the gravitational radius rg range, the material will enter only, not goes out forms the BH.
Acknowledgement In this paper, the research was sponsored by the Nature Science Foundation of Yunnan Province (Project No. 2010ZC160).
Computer Virus Evolution Model and Its Analysis [J].Journal of University of Electronic Science and Technology of China, 2009.03, 3(38), pp: 419-422.

Influence Analysis of Ground Asymmetric Load to the Surrounding Rock Pressure of Existing Open Trench Tunnel CAO Jing1,a, PU Qiongxiang1,b, ZENG Shisheng1,2,c and LIU Haiming1,d 1Kunming University of Science and Technology, Kunming, China 2Kunming Metro Construction Management Co., LTD , Kunming, China acjlb117@sina.com, bpqx503@126.com, czengshisheng@kmgdgs.com, d273527699@qq.com Keywords: Existing open trench tunnel; Ground asymmetric load; Soil arching effect; Surrounding rock pressure.
The author would like to thank the Talents Training Project of Yunnan Province (No. 14118651) and Youth Fund Project of the National Natural Science Foundation (No. 51304088) for providing the financial support to conduct this research.
Several problems about the soil arching effect [J].Journal of Southwest Jiao Tong University, 2003. 38(4): 398-402
Bei Jing, China Building Materials Industry Press, 2004

Failure modes and maintenance strategy analysis Equipment list Failure mode Failure effect Failure consequence Maintenance strategy Motor-operated valve C&D Valve jam for foreign material intrusion or lubrication inadequate Once return line pressure is high and valve E failures, if the valve cannot be opened for jam, consequently the system is unable to realize pressure relief to RPE system, even resulting in the pipeline broken.
The valve seal material is metal and failure probability is low in practice.
Journal of University of South China (Science and Technology),24(1),2010.3
Progress Report on China Nuclear Science & Technology Vol.1, 2009(11)

The Conflict and Development between Resource, Environment and Tourism: A Case of the Ruins of Koguryo as the World Cultural Heritage Site in Ji'an, China Lingling Chen1,a, Jianhua Sun2,b, Keqin Sun2,c 1 School of Humanities and Economic Management, China University of Geosciences, Beijing 100083, China 2 School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China awowoling@gmail.com, bjianhuasunrock@163.com, ckeqins@cugb.edu.cn Keywords: World cultural heritage; Conflict and development; Logistic model Abstract.
Due to its special geographical location in the Changbai Mountainous area, the road network is not up to standard while major railway lines are mainly used in the transportation of various resource-based materials rather than in the massive transport of passengers.
Acknowledgements This research is supported by the project of the Central University Basic Scientific Research Business Expenses Special Fund Assistance (Grant number: 2011PY0216, 2011PY0160, 2011PY0159); the ministry of Education Humanities and Social Science Research and Planning Fund (Grant number: 09YJA630150).
Nashitani: Journal of Inner and East Asia Studies.

Festa, “Comparing safety performance measures obtained from video capture data” in: Journal of Transportation Engineering, edited by ASCE, vol. 7 (2010), pp. 481-492
Vitale, “Safety performance measures: a comparison between microsimulation and observational data” in: Procedia Social and Behavioral Science, edited by Helsevier, vol. 20 (2011), pp. 217–225
Figliomeni, “Level of safety on two-lane undivided rural highways” in: Applied Mechanics and Materials, vol. 253-255 (2013), pp.1705-1710
Gallelli, “Estimation of safety performance measures from smartphone sensors”, in: Procedia Social and Behavioral Sciences, vol. 54 (2012), pp. 1095-1103.

The studies were conducted for the range of Reynolds numbers 11500 – 67000 and Euler numbers 48 – 75. 3 Aim of Paper The purpose of the work is to determine the optimal thermo-hydraulic operation conditions of the U-shaped geothermal probe vertical collector of the heat supply system with a heat pump and the optimal volume fraction of TiO2 and Al2O3 nanoparticles in the aqueous dispersion, under which the nanofluid provides the lowest pumping capacity of the coolant compared to the base fluid. 4 Materials and Methods To study the convective heat transfer of a water coolant, we used the criterion equation for the coolant motion turbulent mode [6, 16] (1) where Re is the Reynolds number; (Pr/Prwall)0.25 – Mikheev's correction.
International Journal of Heat and Mass Transfer. 136 (2019) 1233-1240
Data analysis of the turbulent flow of nanofluids «water-Al2O3» and «water-TiO2» in the Slinky collector of the heat pump. 2022 IEEE 17th International Conference on Computer Sciences and Information Technologies (CSIT), Lviv, Ukraine, (2022), 357–360
Thermal Science and Engineering Progress 13 (2019) 100371

Therefore, before modeling construction land demand prediction, collecting materials involved as much as possible, and then choose important factors of construction land.
Acknowledgment This research is fund by National Natural Science Foundation of China, No. 40874010.
Scientific and Technological Management of Land and Resources, 2007(5):81-84 [4] Vapnik V Estimation of Dependencies Based on Empirical Data.Berlin:Springer-Verlag,1982 [5] Vapnik V The nature of statistical learning theory [M].New York: Springer,1995 [6] Xiong Jianxiu, Li Zuoyong.Sediment-carrying capacity forecasting based on support vector machine, Journal of Hydraulic Engineering, 2005(10):1171-1175 [7] Zhou Ming, Sun Shudong.
Kunming university of science and technology, 2008 [11] Zhang Hao,Luo Yiyong, et al.

Cooperative interaction between the seeded bacteria in bio-enhanced activated carbon filter Zhang Duoying1, 2,a, Li Weiguang2,3,b, Gong Xujin2,c, Qin Wen2,d , and Huang Xiaofei2,e 1 Department of Food Science and Environmental Engineering, East University of Heilongjiang, 331 Xuefu Road, Harbin, Heilongjiang 150086, PR China 2 School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, PR China 3 National Engineering Research Centre of Urban Water Resources, 73 Huanghe Road, Harbin Heilongjiang, 150090, PR China aduo0314@163.com, bhitlwg@126.com, ckimkung@126.com, dqinwenshehe@126.com, ehxf7777@126.com Keywords: cooperative interaction, seeded bacteria, bio-enhanced activated carbon, forecasting model Abstract.
Materials and Methods Preparation of BEAC filter.
Acknowledgements This study was supported by the Project of Outstanding Academic Youth of Heilongjiang Province (Grant No. 1251G049) and the National Natural Science Foundation of China (Grant No. 51078106).
Miao, Journal of Harbin Institute of Technology, vol. 8, (2011), pp. 44-49.

Surface Roughness Cutting Phenomena Machining Parameters Workpiece Properties Cutting tool Properties Cutting speed Feed rate Depth of cut Tool angle Cooling fluid Process Kinematics Stepover Cutting force variation Friction in the cutting zone Chip Formation Accelerations Vibrations Tool shape Nose radius Tool material Runout errors Workpiece material Workpiece dimensions Abrasion BUE formation Tool wear Corrosion Fig.1.
Acknowledgements The authors thank to the Research Group of the UNED “Mechanical, Materials and Manufacturing Technologies (TM3)” the given support during the development of this work, and funding of the Spanish Ministry of Science and Innovation (Project DPI2011-27135 and MTM2009-07800) and of the Industrial Engineering School-UNED (Project REF2012-ICF03) to carry it out.
Hsu, in: One-pass milling machining parameter optimization to achieve mirror surface roughness, volume 193 of Proceedings of the Institution of Mechanical Engineers, chapter, 1, Part B: Journal of Engineering Manufacture (2005)
Sharma, et al. in: Design optimization of cutting conditions and analysis of their effect on tool wear and surface roughness during hard turning of AISI-H11 steel with a coated—mixed ceramic tool, volume 223 of Proceedings of the Institution of Mechanical Engineers, chapter 11, Part B: Journal of Engineering Manufacture (2009)
Vecchi: Sciences Vol. 220 (1983), p. 671 [87] Z.

In Germany, the curriculum which coincides with "dual system" training mode is also a kind of taking ability as the basis of course, and this course in the course objectives, curriculum content, curriculum arrangement, the curriculum implementation, curriculum teaching, curriculum valuation has its own characteristics. [5]Firstly, comprehensive vocational ability training is to be the objective, the content of courses, of teaching material which needs compiling and updating according to the actual needs of social development.
References [1] Shi Xiang, Xu Shaoping and Liu Yongqian: Suzhou Institute of Education Journal.
Science Press (1991) [4] Zhang Ling: Vocational education forum.
Vol. 2 (2009), p.10 [6] Lin Guihua and Kan Li: Liaoning higher vocational technical institute journal.