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MATERIALS AND METHODS Sampling of living district The study was carried through a living district in a northern city in China.
Acknowledgements This work was financially supported by the Shandong Province High School Science ＆ Technology Foundation Planning Project(Grant No．J10LE10)，and the Doctoral Foundation of Jinan University(Grant No．XBS1014)．
Zhang, Journal of Environmental Sciences.
Science of the Tolal Environment.

LT2010020), Important National Science & Technology Specific Projects of China (Grant No. 2009ZX04011-033), Major Program of National Natural Science Foundation of China (Grant No. 50835001) and Science and Technology Program of Liaoning Province of China (Grant No. 2007220014).
Horng: Journal of solid mechanics and materials engineering Vol. 1 (2007), p. 58-68

Study on the Preparation of PSA NanoFibers Using Electro-spinning Technology and its Characterizations Wenjie CHEN 1, a, Binjie XIN 1, b , Xiangji WU 1, c Shanghai University of Engineering Science, College of Fashion, Shanghai,China, 201620) alwjqqhr@163.com, bxinbj@sues.edu.cn, cwxjzrm@126.com * Corresponding author: Binjie Xin, E-mail: xinbj@sues.edu.cn Keywords: Electrospinning; Nanofiber; Polysulfonamide; Morphology Abstract.
Experimental Materials The polysulfonamide sample (intrinsic viscosity=2.0~2.5dl/g; weight concentration=12wt %) and DMAC solvent (CP grade) were purchased from Shanghai Tanlon Fiber Co.
Graduate students Innovation Fund of Shanghai University of Engineering Science (2011yjs42) References [1] Reneker, G Srinivasan and D H, Polym, 1995. 36(195)
Journal of Colloid and Interface Science, 2009, 340(2): 291-297

Effect of Lithium-doped on the crystal structure and morphology of ZnO nanorod arrays Yanglin Liu1,2,a, Xuechen Duan 1,b, Shuyun Liu2,c, Yanyan Liu3,d 1School of Material Science and Engineering,Central South University,Changsha,China 2Changsha Environmental Protection College, Changsha,China 3College of Science and Engineering, Jinan University, Guangzhou,China aLYL9909@126.com,bxc_d@126.com,cshuyun6275@126.com,d124917785@qq.com Key words: ZLO;nanorods array; thin films;Hydrothermal method Abstract:Lithium-doped zinc oxide(ZLO) thin films were deposited on glass substrates by sol-gel method.And then by controlling processing parameters such as the amount of doped lithium and stability, etc,Well-aligned ZLO nanorod arrays were successfully grown on substrates by hydrothermal method, where the substrates were spin-coated with seed layer.The experiments show the 5% Li-doped and diameter of about 50nm of ZLO thin films nanorod arrays has the best performance photoluminescence
ZLO nano array prepared by surface active agent have better electro-optical properties than ZLO nano array, and it has new potential application prospects in the fields such as solar, laser, optoelectronic devices, which provides new ideas to develop and utilize ZnO nano material[4-5].
Acknowledgements This work was financially supported by the Hunan Province Science and technology projects (2009FJ3096).
Journal of Applied Physics，2003，94:5240-5264 [4] Tang H.P, Zhu L.P, YeZ.Z, et al.

PCBs consist of approximately 30% metallic and 70% nonmetallic materials [6].
Materials and Methods Materials.
Mohamad, A Review on Printed Circuit Boards Waste Recycling Technologies and Reuse of Recovered Nonmetallic Materials, International Journal of Scientific & Engineering Research 3 (2012) 2229-5518
Guanghong, Products Made from Nonmetallic Materials Reclaimed from Waste Printed Circuit Boards, Tsinghua Science and Technology 12 (2007) 276-283
Applied Polymer Science 89 (2003) 2464 –2467

Sometimes, this may lead to material cracking in this region.
Applied Surface Science. 208-209 (2003) 432 – 436
Journal of Materials Processing Technology. 91 (1999) 75-79
International Journal of Machine Tools & Manufacture. 67 (2013) 1 – 7
Material Data Sheet 1.5415, ThyssenKrupp Materials International 11/2011.

At present, large-scale use of piezoelectric ceramic materials is mainly lead-based piezoelectric ceramics.
Prefired the dry gel in muffle furnace at temperature of 750℃ for 2.5h to obtain powder materials.
Powder materials must be milled in agate mortar and 5% PVA binder was added during the grinding process.
Qm has related with internal domain wall’s vibration, rotation and friction, indicating that to improve the performance of material from the microstructure of materials.
Functional Materials, 2003, 6(34):615-618 [4] Ringgaard E, Wurlitzer T.

Emission in; fire-resistant, with low corrosion ability and toxicity of combustion products of insulating materials).
This indicates the possibility of transition of combustible cable insulation during treatment with fire-retardant coatings to materials related to the non-combustible, non-flammable surface.
Fire Safety Journal, 95 (2018) 113-121
IOP Conference Series Materials Science and Engineering, 569(3): 032048 (2019)
Journal of Thermal Analysis and Calorimetry,  139 (2020) 775-787

Introduction The market for carbon fibers is dominated by fibers made from polyacrylonitrile (PAN) due to their combination of good mechanical properties (high-strength, low-density composite materials and high break strength (particularly tensile strength, and reasonable cost).
Experimental 2.1 Materials and dope preparation Polyacrylonitrile (PAN) powder of 150 000 molecular weight, N, N-dimethylformamide (DMF) and acrylamide (AM) were obtained from Aldrich Chemical and were used without further purification.
Ren, Preparation And Surface Structures Of Carbon Nanofibers Produced From Electrospun Pan Precursors, New Carbon Materials. 23 (2008) 171-176
Park, Electrochemical Characteristics of Activated Carbon Nanofiber Electrodes for Supercapacitors, Materials Science and Engineering: B. 164 (2009) 106-111
Koombhonge, Bending Instability of Electrically Charged Liquid Jets of Polymer Solutions in Electrospinning, Journal Applied Physics. 87. (2000) 4531 –4547

Moreno-Valenzuela, Effects of nonlinear friction compensation in the inertia wheel pendulum, Journal of Mechanical Science and Technology 31 (9) (2017) 4425-4433. doi:10.1007/s12206-017-0843-4 [8] M.
Guo, Nonlinear backstepping design for the underactuated tora system, Journal of Vibroengineering 16 (2014) 552-559
Journal of Vibration and Control.
Gomm, Modelling and simulation of spherical inverted pendulum based on lqr control with simmechanics, Applied Mechanics and Materials 391 (2013) 163-167.
Olfati-Saber, Nonlinear control of underactuated mechanical systems with application to robotics and aerospace vehicles, Thesis (Ph.D.)Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science