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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

Introduction Due to the lack of through-the-thickness reinforcement, composite materials are susceptible to the damage resulting from the impact loading.
The impact damage behaves as a discontinuity when the composite materials are loaded and then, it causes large drops in resistance of composite structure [1].
It is, therefore, of importance to understand the fatigue behavior when the impacted composite materials are subjected to the fatigue loading.
Experimental Procedure Materials and Specimen Table 1.
Composite Materials, 20 (1986) p.154 9.

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.

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.

Experimental Experimental Materials.
Table 1 presents the results of typical chemical compositions of these materials.
Polycarboxylate superplasticiser produced by Mapei Building Materials Corporation was used in the all concrete mixtures to achieve the target slump.
References [1] Zhaoxiong Sun, Yixiong Ge: Journal of agriculture university of Xinjiang Vol. 26(2) (2003), p65 (in Chinese)
[3] Jinyu Li, Jianguo Cao and Wenyu Xu: Research on the leakage and dissolution of concrete under waterpressure (China Building Materials Industry Press, Beijing 2000).

Study on Diesel Combustion Dust with ASE and HPLC Shujun Liu1,a, Haonan Xu2,b, Kun Feng2,c, Ying Wang2,d 1Key Laboratory For Fire Scence Inquiry &Evidence Confirm of MPS, Shenyang Fire Research Institution, Ministry of Public Security, Liaoning, Shenyang, 110034, China 2College of Chemistry and Life Sciences, Shenyang Normal University, Liaoning, Shenyang, 110034, China alsjsy7813@163.com,bxuhaonantiancai@gmail.com,cdajuzi_001@yeah.net,dwy0339@126.com Key words: Diesel combustion dust, ASE, HPLC Abstract.
References [1] Geng Huimin, Lu Zhibao, The Technology of Collecting Material Evidence in Arson Case，Fire Science and technology. 1999, 5 (2): 54-55 [2] TIAN Gui-hua，LU Zhi-bao，DENG Zhen-yu, High performance liquid chromatogram application in fire causes' identification, Fire Science and technology. 2004, 23 ( 3)：296-298 [3] Ikuo UETA, Yoshihiro SAITO, Kenta TERAOKA, Hisashi MATSUURA, analytical sciences, 2010, 26,1127-1132
The incidence of ignitable liquid residues in fire debris as determined by a sensitive and comprehensive analytical scheme，Journal of Forensic Sciences，1997,42(5),828-832

Fabrication of Hydroxyapatite and Observation of Nanoparticles Entering into Cells Dong Yang1a* Enjie Sun2b 1College of Chemical and Chemistry, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, P.R.China 2Department of Biological Science and Technology, College of Science, Wuhan University of Technology, Wuhan 430070, Hubei, P.R.China ayangdong@sust.edu.cn, bsunecho@163.com Keywords: Hydroxyapatite, Cells, Penetration Abstract.
Such investigations have important applications in future, and will solve many key problems in life science.
Material and Methods Hydroxyaptite (HAP) nanoparticles used in this paper were prepared via homogeneous chemical sedimentation reaction in our laboratory according to literature.[11] Briefly, the procedure described here, the nanoparticles were fabricated by adding Ca (H2PO4)2 solution to Ca(OH)2 in water (Ca/P ratio =1.67) at determined speed accompanied by vigorous stirring for 24h.
Aknowledgement This research was supported by the Scientific Research Fund of Shaanxi University of Science and Technology ZX10-13.
Wei, CHINA JOURNAL OF MODERN MEDICINE, 4 (2007) 389

Analysis of the crack growth of surface could examine the nonlinear behavior of concrete, and obtain some basic properties of material [2].
Acknowledgments This project is sponsored by National Natural Science Foundation of China (Grant No. 90815005, 50978218), Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106120110003) and the Office Educational of Shan’xi Province in China (Grant No. 2010JK633) References [1] Deng Guozhuan.
Journal of Engineering Mechanics, 1999, 125(6): 622－629
HeFei: University of Science and Technology of China Press, 2003.

Main material of the bearing is GCr15 with brass out ring and plastic alloy liner.
Acknowledgements The authors gratefully wish to acknowledge the supports of National Science Foundation (51165024), Gansu Province Fundamental Research Funds for the Universities (1202ZTC060) and Project supported by Development Program for Outstanding Young Teachers in Lanzhou University of Technology (1002ZCX004).
Journal Wuhan University of Hydraulic and Electrical Engineering.
Deng, in: Grey System Theory, Huazhong University of Science and Technology Press, Wuhan (2002), in press