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Acknowledgements This work was financially supported by the science and technology project of Jiangxi transportation department (2013C0006).
Journal of materials engineering, 2006, (02): 06-11
Permeability function for unsaturated soils using the soil-water characteristic curve[J].Canadian Geotechnical Journal, 1994, 31:533-546.

Experimental section Materials.
Li: Marine Science Bulletin Vol.5 (2003), p.32 [3] Y.S.
William: Canadian journal of microbiology Vol.38 (1992) p.921 [5] M.M.
Choong: Journal of Environmental Engineering Vol.138, (2012) p.1157

The Dynamic Simulation of Engine Slider-crank Mechanism Based on ANSYS and ADAMS Li Ni1,a, Yayu Huang2,b, Chongkai Zhou3,c Kunming University of Science and Technology, Kunming, 650500, China a609803649@qq.com, bkmhuangyayu@outlook.com, czh.chk@163.com Keywords: Slider-crank, Rigid-flexible coupling, Kinematics, Dynamics, Simulation Abstract.
ADAMS and ANSYS joint generate the Rigid-flexible coupling model. (1) Put the connecting rod model into ANSYS to generate flexible body neutral file: 1) define the entity model element type, material properties and real constants; 2) mesh to generate finite element model; 3) Set outside point , generate neutral file by ANSYS and ADAMS interface.
Fig.8 The stress diagram Fig.9 The strain diagram As is shown, the maximum stress of the connecting rod is 321.7864 MPa, it is far less than the allowable stress of material, and it meets the requirements of strength, and the strain diagram and stress diagram have the same change trend, the maximum strain is 0.002 mm.
“The flexible body joint simulation based on ANSYS and ADAMS [J]”, Journal of system simulation, 2008 [4] Liping Chen, Yunqing Zhang and Weiqun Ren, etc.
“Industrial mechanical dynamics simulation [J]”, Journal of equipment manufacturing technology, 2009

Optimized battery life, utilization of the lightweight materials and increasing the flying range are ongoing challenges limiting the usage of the drones. 7.
[4] Hassanalian, Mostafa, and Abdessattar Abdelkefi, Classifications, applications, and design challenges of drones: A review, Progress in Aerospace Sciences 91 (2017): 99-131
[5] Tang, Lina, and Guofan Shao, Drone remote sensing for forestry research and practices, Journal of Forestry Research 26 (2015): 791-797
[15] Tang, Lina, and Guofan Shao, Drone remote sensing for forestry research and practices, Journal of Forestry Research 26 (2015): 791-797
Theophilus, A review on drones controlled in real-time, International journal of dynamics and control (2021): 1-15

The coverage materials are mainly coal gangue, fly ash, the abandoned debris of the open-pit mine and the tailings pond of metallic ore.
Science & Technology Review. 
Journal of Henan Agricultural Sciences. 
Journal of Agro-Environment Science. 
Journal of Henan polytechnic university (natural science).

Abdullah2, f 1NANO-SciTech Centre, Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia 2School of Physics and Materials Studies, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia 3Nano-ElecTronic Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia 4School of Chemistry and Environmental Studies, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia amemil_88@yahoo.com, bkevinalvin86@yahoo.com, cmrashidmahmud@yahoo.com, dmohamadkamal@salam.uitm.edu.my, erusop@salam.uitm.edu.my, fsaifollah@salam.uitm.edu.my Keywords : Sol–gel method, ZnO nanostructures, Linear Polarization Resistance and Mild steel Abstract.
Introduction Recently, nanostructure materials have received growing interests due to their unique properties and various potential applications in the fabrication of the nanodevices [1].
Zinc acetate dehydrate (ZAD) used as a starting material with 2-methoxyethanol (2-ME).
Liu, "ZnO nanorods/plates on Si substrate grown by low-temperature hydrothermal reaction," Applied Surface Science, vol. 256, pp. 2781-2785, 2010
Popoola, "Study of Influence of Zinc Plated Mild Steel Deterioration in Seawater Environment," International Journal of Electrochemical Science vol. 6, pp. 5605 - 5616, 2011

In this paper, chitosan and caffeic acid were used as starting materials to prepare chitosan caffeates by reflux-heating and freeze-drying.
Fig. 1 Chemical structure of chitosan and caffeic acid Materials and Methods Materials.
Yuan, Recent development and application of absorbable hemostatic materials, Polym.
Li, Chitosan-based composite materials for prospective hemostatic applications, Mar.
Li, Preparation and characterization of chitosan-agarose composite films, Materials. 9 (10) 816

Introduction Higher process forces during friction stir welding of high temperature melting point materials hindered its applications to weld steels.
In the last decade, Friction stir welding (FSW) has extensively used especially to weld soft materials with good quality.
This will bring down the yield strength of materials to be joined by increasing the initial material temperature for the FSW process and which in turn reduce the heat input required from the tool and the frictional loads.
Feng, Characterization of Multilayered Multipass Friction Stir Weld on ASTM A572 G50 Steel, Welding Journal. (2014) 443S-450S
Fujii, Microstructure and mechanical properties of S45C steel prepared by laser-assisted friction stir welding, Materials & Design. 47 (2013) 842-849

Hydration Dynamics of Portland Cement Studied by Magnetic Resonance SHE An Ming1, a, YAO Wu2, b and YUAN Wan Cheng1, c 1 State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China 2 Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai 200092, China a sheanming@gmail.com, b yaowuk@tongji.edu.cn, cyuan@tongji.edu.cn Key word: cement; hydration dynamics; relaxation time; low field NMR Abstract.
A complete and accurate understanding on the hydration dynamics would enable the engineers not only to predict the properties of concrete, but also to design new cement based materials.
Table 1 Chemical composition of cement w% Materials CaO SiO2 Al2O3 Fe2O3 MgO SO3 K2O MnO Cement 66.5 20.3 5.65 2.70 1.01 2.45 0.80 0.08 Table 2 Principal mineral compositions of cement w% C3S C2S C3A C4AF CaSO4 67.6 7.2 10.4 8.2 4.2 Test method.
Li: Journal of Wuhan University of Technology--Materials Science Edition vol. 25 [4] (2010), p.704
Yao: Science in China-Technological Sciences vol. 53 [6] (2010), p.1471

The outer decoration adopts the heat insulation and fire prevention material.
The ratio of the material recycle and utility has reached over 80%
* This work is supported by the National Natural Science Foundation (51178286) and National Natural Science Foundation (51578357).
Journal of shenyang architectural university: natural science edition, 2015(3)
Modern Science, 2008,(22): 128-129.