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Materials and experimental procedure A number of bainitic steel grades were investigated, the compositions of which are indicated in Table 1.
As was shown earlier, tempering at 250 C results, in the materials investigated, in transformation of a few percents of retained austenite, which quantitatively correspond to the fraction required to reach the maximum bainite volume fraction at the tempering temperature.
Bhadeshia, Materials Science and Technology, vol.25, n°12, 2009, pp.1508-1512 [4] T.
Smanio, ASCOMETAL CREAS Internal report [6] Irvine et al., Journal or the Iron and Steel Institute, Vol. 196, p70, 1960 [7] V.
Edmonds, Metal Science, Vol. 13, 1979, pp. 325-334

More than 40 kind’s neutral and caustic materials and 7 kind’s solid matters were produced.
Tianjin Li[2] studied the potential of the sorbent-catalysts prepared from three low cost materials, i.e., the lime, fly ash and some industrial waste material containing iron oxide, have been investigated for simultaneous removal of SO2 and NOx from flue gas in the temperature range 700-850℃.
Fig.1 Schematic diagram of experimental apparatus Materials and measure method Table 1 Chemica1 composition of experiment materials（wt%） Fly ash CaO MgO SiO2 Al2O3 P2O5 Fe2O3 3.67 0.53 46.92 30.43 0.26 3.72 K2O SO3 TiO2 Na2O loss on ignition other 1.6 1.35 1.26 0.30 9.63 4.05 gypsum CaSO4.2H2O CaSO3.0.5H2O CaCO3 free moisture Cl- F- 90.16 0.36 0.38 9.6 0.0036 0.00052 1,SO2 is from Nanjing special gas company, and its inlet and outlet concentrations were measured on-line by Testo 350pro and NGA 2000 flue gas analyzer.
experimental results and computational method According to gypsum slurry pH value, the in-let and out-let SO2 concentration, SO2 absorption rate NSO2 can be calculated by material balance.
Journal of Chemical Technology & Biotechnology, Vol.82(2007), p.1762 [11] Hiroaki Tsuchiai, tomohiro Ishizuka:Ind Eng ChemRes, Vol.34(1995),p.1407 [12] WANG Chunfeng,U Jiansheng,SUN Xia:J of Environ Sci., Vol.21(2009),p.131(in Chinese) [13] Yongqi Lu, Xiaohong Yao, Jiming Hao:Environ Sci., Vol.20(1999),p.17 (in Chinese) [14] Xiang Gao,Wang Huo,Yi Zhong.

In addition, in contrast to most materials expand upon heating due to positive coefficient of thermal expansion (CTE) [24-28], graphene can have a negative CTE owing to out-of-plane thermal fluctuations [29,30].
Intensive research showed that the addition of graphene can significantly reduce the CTE of organic materials [31-33].
Wang, Preparation and Anti-corrosion Properties of Polyaniline/Graphene Waterborne Coatings, Journal of Electrical Engineering of China. 35 (2015) 170-176.
Bellucci, Graphene/Epoxy Coating as Multifunctional Material for Aircraft Structures, Aerospace. 2 (2015) 423-434
(In Chinese) [32] S.Yang, Y.X.He, M.T.Feng, L.Zhang, S.Z.Liu, X.L.Zhang, M.Z.Qin, B.Chen, Y.L.Jiang, Influenceof modified graphene oxide on the coefficient of thermal expansion of epoxy composite, New Chemical Materials. 47 (2019) 74-78.

A complete characterization of this material is reported in [14].
La Magna, Applied Physics Reviews 1, 031301 (2014) [13] A.Muoio et al. , Neutron Detection Study Through Simulations with Fluka, Materials Science Forum, 1062,509-513(2022)
Materials Science and Engineering: R: Reports 35.1-3 (2001): 1-138
Materials, 14(3), 568
Journal of Instrumentation 18.03 (2023): C03007.

Consequently, many structural problems are encountered in these severe work conditions since material fatigue is accelerated leading to structural damages and catastrophic failures.
The beam has six layers of a uniform thickness with the following material properties: E1= 155 GPa, E2= 12.1 GPa, ν12= 0.248, G12= 4.4 GPa and ρ= 1560 Kg/m3.
Vosoughi: Communications in Nonlinear Science and Numerical Simulation Vol. 14 (2009), p. 906–915
White: Journal of Sound and Vibration Vol. 149, (1991), p.179-195.

Introduction of the Experiment Experimental Materials.
[3] Songyu Zhang, in:Study on Properties of Semi-rigid Steel Fiber Ceramic Concrete，Journal of Harbin Architectural Engineering College,1994,27(5):64-68 [4] Chengkui Huang. in: Fiber Reinforced Concrete Structures, China Architecture and Building Press(2004) [5] Xiuman Zhang, in: Experimental Research of Tensile Strength of Combined Aggregate Concrete, North China University of Technology, 2010.5 [6] The Ministry of Construction of China, Code for design of concrete structures(GB/T50081–2002)”, China Architecture and Building Press(2002)
[7] Danying Gao, Jianxiu Liu.: Theory of steel fiber reinforced concrete”, Science and Technology Press(1994).

Experiments show that the reversing pulse width adjustment method is a good speed regulation method, the dynamic, wide speed range and good linearity governor. 0 Introduction Ultrasonic motor has been widely used in difficult to machine materials; precision machine tools.
Ultrasonic motor starts stability studies, Journal of Electrical Engineering, 2011, 12(31): 282-286 [2] Zhao Chunsheng.
Beijing: the Science Press, 2007: 163-166

Acknowledgement This work is supported by Natural Science Foundation of Guangdong Province in China (No.
Journal of Hazardous Materials, 140(2007): 280-292.

Alley, Daniel , Robotics and Autonomous Systems, v7, n4, p309-326, Nov 1991 [4] Jianzhong Huang,  Yuwan Cen , Advanced Materials Research, Vol.422,(2012) , p.3-9 [5] Zhe-Dong Leng, Journal of Shanghai Jiaotong University (Science), Vol.14 (2009), p.306-309

EL is luminescence phenomena when current through materials or substance in high electric field [2].
Acknowledgements This work was supported by the Hebei province natural science under Grant No.F2011201045.
Journal of Optoelectronics·Laser, 2011,22(9):1332-1336