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If r1=8mm, r2=8mm, r3=9mm, l=40mm, t=1mm, selecting PZT-4 as material, two curve intersections are calculated through Matlab.
To judge whether the mode1 is radial vibration mode or not, we keep the same material parameters and take the method of control variable to analyze the relationship between resonance frequency and structure size of piezoelectric tube stack.
The 1/20 length mode of piezoelectric tube stack is selected and PZT-4 is selected as material.
Acknowledge This work was supported by the National Natural Science Foundation of China (No.61072004), the Scientific Research Key Program (No.KZ201110772040) and Common Program (No.
References [1] Gonghuan Du, Zhemin Zhu, Xiufen Gong, Acoustic foundation, Nanjing university, Nanjing university press, 2006 [2] Fuxue Zhang, Likun Wang, Modern piezoelectric science, Science press, Beijing, 2002 [3] Guidong Luan, Jinduo Zhang, Renqian Wang, Piezoelectric transducer and transducer array, Beijing University press, 2005 [4] Yiquan Yuan , Limited long piezoelectric thin circular tube diameter, long coupling and emission frequency response, Engineering journal of Nanjing college, 1983 [5] Xiping Mo, The ANSYS software application in the simulation analysis of the acoustic transducer, Acoustic technology, 26 (26), 2007

Due to the limitation of the analysis method of science and technology, the measurement of binder concentration and its migration are not yet fully able to quantitative exactly, only half quantitative.
Experimental Materials Ultracote No1 clay from USA, mean particle size 0.6μm; CaCO3 from ECC England, mean particle size 1.1μm,from domestic, mean particle size 2.9μm; SB-latex from Japan; oxidized starch and 70gsm base paper from home market.
Journal of Pulp and Paper Science, 1998, 24(5):141 [3] R Pasi,H Heikki.
The effect of intense air drying on material distribution and quality in coated papers[J].
Science press, Beijing, 1988 [5] Zhaohui Zhen.

Chemical Constituents of the Aerial Parts of Scoparia dulcis and Anti-Cancer, Anti-Inflammatory Activities Nguyen Ngoc Thanh Tin1, Nguyen Dang Thanh Truc1, Hoang Thi Thu Hang1, Pham Thi Nhat Trinh2, Long Giang Bach3,4 and Le Tien Dung5,6,* 1Nguyen Thong High School, Vinh Long Province, Vietnam 2Faculty of Natural Sciences, Tien Giang University, Tien Giang Province, Vietnam 3NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam 4Faculty of Chemical Engineering and Food Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam 5Institute of Applied Materials Science, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam; 6Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam; *inpcdung@yahoo.com Keywords: Anti-inflammatory, Aerial Parts, Scoparia Dulcis Abstract.
ESI-MS were performed on a MicroOTOF-Q mass spectrometer (Bruker, Karlsruhe, Germany), University of Science (National University, HoChiMinh city, Vietnam).
Plant materials.
A voucher specimen (015842) has been deposited in Institute of Applied Materials Science (VAST) by Dr.
The American Journal of Chinese Medicine. 2011, 39, 943–956

Acknowledgements The project was financially supported by the research project of Ministry of Housing and Urban-Rural Development of China（2013-H-4）, science and technology research project of Jilin Provincial Science & Technology Department（20130413055GH）, and the key discipline of Jilin province.
Promotion Materials, 1990:43-47
Journal of Jilin University (Earth Science Edition), 2013, 43(3): 851-857(In Chinese)

The Analysis of Plate Heat Exchanger In Central Heating Regulation of Indirect Connection Hot Water Heating System Minghui Cui1, a, Xin Wang2,b and Jiliang Liu3,c 1,2College of Architecture and Civil Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China 3Zhangjiakou City Weijia Engineering Design Consulting Company Limited, Zhangjiakou, Hebei, 075000, China acuiminghui666@163.com, bwangxinlove7@163.com Keywords: plate heat exchanger, central heating, quality regulation, quality-flow regulation Abstract: Plate heat exchanger with unique advantages become dominant heat exchange equipment in heating engineering.
Introduction The application and development of plate heat exchanger has more than hundred years of history, because of the high heat transfer coefficient, small pressure drop, compact structure, light weight, small footprint, area and process convenient, wide components versatility, wide chosen materials, characteristics of easy to realize large-scale production etc., plate heat exchanger has been widely used in food, machinery, metallurgy, oil chemical industry and shipping, and other fields, meanwhile become dominant heat exchange equipment in urban central heating engineering[1].
Beijing, Chemical Industry Press, (2009) [3] Ping He, Gang Sun, The Heating Engineering[M].Beijing, China Building Industry Press, (2009) [4] Minghui Cui, Lichuan Zhao, Analysis of Concentrated Heating Regulation for Indirect Connection Hot Water Heating System[J].Journal of Hebei University of Science and Technology, 2010,31（6）：584-587
[8] Jinping Zhang, Qiang Zhang, Plate Heat Exchanger and Its Application Analysis In The Heating Engineering,[J].Gansu Science and Technology, 2004，20（11）： 114-118

Ibragimov Complex Institute, Russian Academy of Sciences, 21A, Staropromyslovsky ave., Grozny, 364051, Russia, avegros@rambler.ru (corresponding author), baslan2001@rambler.ru, czmagamed-ali@mail.ru Keywords: contact melting, electrotransport, x-ray diffraction analysis, intermetallic compound.
A., Sozaev V.A., On relation between a rate of contact melting of metals with solid solutions and their residual resistance, Letters to the Journal of Theoretic Physics, 32 (7), (2006), 1-5
Proceedings of the international symposium engineering and earth sciences: applied and fundamental research (ISEES 2018), 177, (2018), 142-145
[11] Elekoeva K.M., Karamurzov B.S., Kardanova M.S., Korotkov P.K., Orkvasov T.A., Sozaev V.A., Adhesion of melts and soldering of various materials.
Frantsevich, National Academy of Sciences of Ukraine, 42, (2009), 23-38

Therefore, it is the focus and hot issues in the field of water conservancy science.
Materials Based on the scientific theory of membership ,it made quantitative evaluation of water resources carrying capacity of Anhui Province. 1) Weight determination of each level It used the method based on vague sets to determine the weight at first, the weight sets were assumed as: X=（x1，x2，x3）=（B1，B2，B3）.The decision group was composed of five experts, it was D=（d1，d2，d3，d4，d5）,thus the vague evaluation matrix could be drawed as （aij）.
[2] Department of International Cooperation, Science & Technology, Study of Water Resources and Environment Carrying Capacity [A], Symposium Proceedings about Water Resources and Environment Carrying Capacity [C], Beijing: China Water Power Press, 2002
X., Synthetical Evaluating Method of Water Resources Sustainable Development and Using Status, Journal of Jilin University (Earth Science Edition), 32(1), pp. 55-57, 2002

Acknowledgements This paper was supported by the National Natural Science Foundation of China (Grant No. 51175075).
Key Engineering Materials, Vol. 464, (2011), p.741-744
Journal of Applied Polymer Science.
Science Press, 12,1990

Therefore, it can simulate the fracture and failure process of elasto-brittle-plastic materials such as rock materials.
The two joint materials, as shown in Fig.1, are assumed of the same property, which is shown in table 1 as well as intact rock mass property parameters.
The lower undulation mode leads to completely joint material failure, which performs friction-sliding failure mode.
Horii, "A constitutive model of highly jointed rock masses", Mechanics of Materials, vol 13, 1992, p. 217-246
[12]Hu Bo, Zhang Nan and Liu Shun-gui, "Contrastive model test for joint influence on strength and deformation of rock masses", Journal of Central South University, vol 40, 2009, p. 1133-1138

The composite steel plate shear wall, which was covered with concrete wall on the one side or both the two sides of the steel plate and the two different materials were connected by shear bolts or tie bars, was invented in the late 1970s.
Acknowledgements The authors are grateful for the financial support from the National Natural Science Foundation of China (50978005) and the Key Project of Science and Technology of Beijing (D09050600370000).
Journal of Structural Engineering, Vol.130(2)(2004), p.271-284 [4] Xilin Lv, Chunjie Gan and Wei Wang.
Journal of Fuzhou University (Natural Sciences Edtion), Vol.29(6)( 2001), p.24-34. ( in Chinese ) [7] Linhai Han.
Journal of Southeast University (Natural Science Edition), Vol.39(6)( 2009), p.1187-1192. ( in Chinese )