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Precision agriculture technology was considered to be the forefront of agricultural science and technology development in the 21st century, one of the modern agricultural production and management technology with the highest content of science and technology, the strongest integrated comprehensiveness.
References [1] Yu Lifeng, Xiao Xinmei, Lan Haijun, Present status and development tendency of agricultural mechanization at home and abroad, Journal of Hubei Agricultural Mechanization, 2007(5), p.36-37
[3] He Baojun, Enlightenment of Foreign Agricultural Mechanization Development Situation to Our Country, Journal of Commercial Economy, 2012(2), p.13-15 [4] Han Xiuhai,Wang Tao,Hou Guoqiang,Research on the Rice Seedlings and Planting Mechanization Technology, Journal of Agricultural Mechanization Research, Vol.31(11), 2009,p.250-252
[5] Yang Hongwei, Research and Application of Intelligent Consultation and Diagnosis Platform with Intelligent Materials for Rice Pests and Diseases, Advanced Materials Research,V644, P.8-11, 2013, Advanced Research on Intelligent System and Mechanical Engineering
[6] Cao Xingqi, Research on the Development in Overseas Agricultural Mechanization, Agricultural Science & Technology and Equipment, 2012(2), P.78-79

Materials and Experiment The chemical composition of 3003 Al-Mn alloy is shown in tab.1(mass fraction).
Ovchinnikov: Metal Science and Heat Treatment, Vol. 50 (2008).P. 120
Geandier: Journal of Alloys and Compounds Vol 400 (2005), P. 116
Li, Zhou J, Duszczyk J: Journal of Materials Processing Technology Vol 3 (2006), P. 372
Sub: European Journal of Mechanics A/Solids Vol 30 (2011), P. 54.

In recent years, Near- infrared (NIR) spectroscopy has become one of the most attractive and used methods for analysis of agricultural-related products and plant materials allowing for the simultaneous, rapid and nondestructive quantification of major components in the food matrix[7-9].
Materials and methods Materials The collected Codonopsis pilosulc from different origins was purchased in the local and all products are grown in the year.
Acknowledgements This work was financially supported by the Special Fund for Quality-Science Research project "doubles strike" key geographical indication protection technology on the origin of Chinese medicinal materials inspection appraisal method (2012104019-4） References [1] Chen H T, Tsai Y L, Chen Y S, et al: The American journal of Chinese medicine, Vol. 38(2010), p. 359
[2]Zhuang S R, Chiu H F, Chen S L, et al: British Journal of Nutrition, Vol. 107(2012), p. 712
[4] Luo H, Lin S, Ren F, et al: Journal of Food Protection, Vol. 70(2007), p.1440 [5] Shan B E, Zeki K, Sugiura T, et al: Cancer Science, Vol. 91(2000), p.383 [6] Liu G Z, Cai D G and Shao S: Journal of traditional Chinese medicine, Vol. 8(1988), p.41 [7] Cozzolino, Daniel, Heather Eunice Smyth, and Mark Gishen : Journal of Agricultural and Food Chemistry , Vol. 26(2003), p. 7703 [8] Smyth HE, Cozzolino D : Curr Bioact Comp , Vol. 7(2011), p. 66 [9] Cozzolino, Daniel : Drug Development Research , Vol. 8(2012), p. 504

Effect of welding heat cycle peak temperature and heat input on HAZ grain size of SMA490BW corrosion resistance steel Mingyue Zhang1,a, Yuan Nie1,b,Qiuying Wang1,c,Hui Chen1,d 1College of Material Science and Engineering, Southwest Jiaotong University, Sichuan Chengdu 610031, China azhangmyanhb@126.com,b nyahyz@163.com,c 490793726@qq.com, dxnrpt@163.com Key words: Grain size ,Heat affected zone ,SMA490BW corrosion resistance steel, Thermal simulation Abstract.
Influence factors of grain growth are the heating temperature and heat preservation time, heating speed, the chemical compositions of materials, the original organizations of materials and treatment conditions.
Uwakweh: Materials Characterization 43:227–233 (1999) [3]Shixing Zhang and Xintian Liu: Test and research Vol. 33, No. 5.pp.16-17(2004) [4] Shaodong Wang and John Goldak: International Journal of Thermal Sciences 48 936–947 (2009)
[5] Bayram Kocabekir: Journal of materials processing technology 195 327–335 (2008)
[6] Yaowu Shi: Journal of materials processing technology 207 30–39 (2008).

Ag/PMMA composites have a wide range of applications in the field of photoelectric sensor [3], optical device [4], antibacterial materials [5].
Composto: Chemistry of materials, Vol 19 (2007) No.4, p.745
Santos and L.M.L Marzán: Advanced Functional Materials, Vol.19 (2009) No.5, p.679
Khanna: Materials chemistry and physics, Vol 104 (2007) No.2, p.367-372
Lee: Journal of colloid and interface science, Vol 289 (2005) No.2, p.402

These findings demonstrate the viability of using a sustainable material such as cork to mitigate the environmental impact of 3D-printed lightweight nylon composite materials.
Engineering Science and Technology, an International Journal 2016, 19 (2), 717-736
International Journal of Polymer Science 2015, 2015, 243947
Journal of Composite Materials 2020, 54 (5), 669-680
ACS Applied Nano Materials 2020, 3(3), 2288-2301

These FG materials are designed to have unique advantages of both elements.
Multidiscipline Modeling in Materials and Structures 13 (2017) 590-611
Materials Today: Proceedings, 44 (2021) 4531-4536
Materials Research Express 7, no. 2 (2020) 025703
Journal of Mechanical Science and Technology 33, no. 4 (2019) 1761-1767

Journal Of Food Science. 72 (5) (2007) [15] J.
Journal Material Science , 40 (1) (2005) 87–95
Journal of Food Science, 69 (2004) 574–578
Key Engineering Materials 599 (2014) 135-140
Key Engineering Materials, 599 (2014) 135-140.

Luminescent Materials on the Basis of Yttrium Oxide and Yttrium Aluminum Garnet Used for Photodynamic Therapy BAKHMETYEV Vadim V.1,a, LEBEDEV Lev A.1,b, VLASENKO Anna B.1,c, BOGDANOV Sergey P 1, d, SOVESTNOV Alexander E 2,e, MINAKOVA Tamara S 3,f, MINAKOVA Ludmila Yu 3,g, SYCHOV Maxim M.1,h 1Saint Petersburg State Technological Institute ( Technological University), 190013, 26 Moskovskiy Prospect, Saint Petersburg, Russia, 2B.P.
Materials and research methods Two methods of synthesis – Pechini method and the method of self-propagating high-temperature synthesis (SHS) were used to synthesize highly dispersed phosphors.
Zelenogorsky, Transparent Yb:(YLa)2O3 ceramics produced by self-propagating high-temperature synthesis and microwave sintering, Optical Materials, 35 (2013) 727-730
Zhang, Preparation of Y3Al5O12:Eu phosphors by citric-gel method and their luminescent properties, Optical Materials, 20 (2002) 13-20
Yen-Pei Preparation of Y3Al5O12:Eu powders by microwave-induced combustion process and thei luminescent properties, Journal of Alloys and Compounds, 402 (2005) 233-236

Yang: Advanced Materials vol. 13 (2011) p. 113
He: Materials Letters vol. 62 (2008) p. 3114
Fan: Journal of Crystal Growth vol. 249 (2003) p. 179
Gao: Materials Characterization vol. 58 (2007) p. 854
Chandra: Journal of Materials Science vol. 42 (2007) p. 4675