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training lecturers,students are mere passive Conceptual knowledge training The guiding method or coach/internship law The trainees are trained by an experienced technical expert or direct executive in the workplace, “A teacher with more than one apprentice”or “teacher with apprentice ” Applicable to safety skills training,teachers explain the action or operating essentials while demonstrating operation Discuss method Mainly keynote speech,allow other participants and speakers to communicate in midway or after the meeting Applicable to the staffs who already have a certain system knowledge Audio-visual technology method The use of modern audio-visual equipment to training students Applicable to the day-to-teaching,can only be complementary Case study method Analysis and evaluate case,put forward the suggestion to solve problems Widely used in corporate managers(middle management) Computer network training method Enterprise put the text,images,audio and video files and other training materials
References [1] Qingren Cao,Zhengquan Xu :China Safety Science Journal.
(In Chinese) [3] Qingren Cao,Shuang Li ,Xuefeng Song :China Safety Science Journal.
(In Chinese) [5] Jianfeng Cheng ,Jingde Xu:Journal of North China Institute of Science and Technology Vol.3(2006),p.115-117.
[8] Kenji Tsunekawa,LIU Bao-long,GAO Jian-ming:Journal of Safety Science and Technology,Vol.4 (2008),p.130-133.

Materials and Methods Samples Local pig samples obtained from several districts in North Sulawesi are northern minahasa, minahasa, mongondow and sanger balls (Figure 1).
International Journal of Veterinary Sciences and Animal Husbandry 2018; 3(3): 04-07 [3].
Expression of Growth Hormone Gene in the Pituitary of Piglets Born to Gilts Injected with Pregnant Mare Serum Gonadotropin and human Chorionic Gonadotropin Prior to Mating International Journal of Sciences: Basic and Applied Research (IJSBAR) (2016) Volume 30, No 4, pp 446-455 [8].
International Journal of Fauna and Biological Studies (2017); 4(5): 82-87
Journal of the Indonesian Tropical Animal Agriculture (J.

Three-point bending specimens of MgAl are loaded by MTS material testing equipment and Hopkinson pressure bar.
Crack grows slowly for ductile material MgAl.
If the material is brittle, it is necessary to reduce loading when crack grows quickly. 0.0 0.5 1.0 1.5 2.0 2.5 0 1 2 3 4 5 6 7 8 Load (KN) Crack Mouth Open Displacement (mm) 0.95(P/V)0 pq Fig.1 Specimen model sketch Fig.2 Curve of crack open displacement vs loading Static fracture experiment Three-point bending specimen is loaded slowly by MTS material testing machine.
Acknowledgements This work was accomplished in the course of research sponsored by National Natural Science Foundation of China under the contract No. 50874095.
Materials Science and Engineering Vol.

In recent years the use of biological adsorption of heavy metals in waste water is arising more and more attention because of its rich sources of raw materials, low cost, fast adsorption, large adsorption capacity, good selectivity and other advantages.
Experimental materials and programs experimental materials Materials (1) The preparation of bean husk powder: bean husk will be washed, dried, load-sharing plates and placing in oven at 80 ˚C drying and then broken by the broken machine, after through 160 mesh sieve, then take it into bag and place in for preparation
Journal of Colloid and Interface Science Vol.279 (2004) p. 307 [2] Xihong CHENG.
Journal of Henan University （In Chinese）Vol.34(2004) p. 41 [10] Saroj S.
Biochemical Engineering Journal Vol. 31 (2006) p. 216

Perovskite based materials are widely used in technical applications.
Ulrich, Materials Research Society, Pittsburgh, Pennsylvania, (1990). 6.
Ulrich, Materials Research Society, Pittsburgh, Pennsylvania, (1989). 7.
Kosinski, Journal of Materials Processing Technology, in press. 24.
Hanifi, Materials Letters, Vol. 61(2007), p.3978.

Formation Sequence of Interface Intermetallic Phases of Cold Rolling Cu/Al Clad Metal Sheet in Annealing Process Lin Yang1,a, Bingxue Mi1,b, Lin Lv1,c, Hongjun Huang1,d, Xiaoping Lin2,e and Xiaoguang Yuan 1,f 1School of material science and technology, Shenyang University of Technology, Shenyang, China 2 School of resources and materials, Northeastern University at Qinhuangdao, Qinhuangdao, China ayanglin318@126.com, b657628207@qq.com, c21581894@qq.com, dhuanghj@sut.edu.cn, elxping3588@163.com, fyuanxg630121@gmail.com Keywords: Formation Gibbs free energy, Thermodynamic calculation, Intermetallic phase, Cu/Al clad metal sheet, Diffusion.
Lin, et al., Overview of Research and applications of Copper/Aluminum Clad Materials.
Rare Metal Materials and Engineering. 40 (2011) 215-220
Journal of Applied Physics. 70 (1991) 3636-3646
Journal of materials science. 23 (1988) 2273-2280

Materials and Methods Materials.
Teresa: Journal of Nanomaterials (2019), pp.1-26 [2] S.
Millare: Materials Sci.
Devine: Materials Vol. 12 No. 11 (2019), https://doi.org/10.3390/ma12111830 [8] B.
Wang et al: Asian Journal of Pharmaceutical Sciences, Vol. 18 No. 1 (2023), https://doi.org/10.1016/j.ajps.2023.100776 [9] C.

New Method of Preparation and Property Study of the Montmorillonite Modified with CTAB Jichu Zhang1, a, Zepeng Zhang1, Bo Hu1, Gang Liu1 1School of Materials Science and Technology, China University of Geoscience, China, 100083 aZhangzp@cugb.edu.cn Keywords: organo-montmorillonite, CTAB, thixotropy, rotary viscosity, XRD, TG Abstract.
These hydrophobic materials have attracted much interest because they have been found wide applications as adsorbents of organic pollutants [1, 2], as thickener used in ink [3, 4], as components in the synthesis of clay-based polymer nano-composites [5-7] and as precursors in the preparation of mesoporous materials [8].
Experimental Materials Ca2+-montmorillonite was from Ningcheng, InnerMongolia province.
European Polymer Journal, 41, 2016–2022 [6] E.P.
Microporous and Mesoporous Materials 88 (2006), 8–15 [9] Hongping He, Frost, R.L., Bostrom, T.

Alexandria Engineering Journal. 55(2) (2016) 1841-1853
Romanian Journal of Physics.52 (2007) 59-72
Akbar, Influence of magnetic field on peristaltic flow of a Casson fluid in an asymmetric channel: Application in crude oil refinement, Journal of Magnetism and Magnetic Materials. 378 (2015) 463–468
Journal of Nanofluids. 4(4) (2015) 461-473
Alsaedi, Influence of convective conditions in radiative peristaltic flow of pseudoplastic nanofluid in tapered asymmetric channel, Journal of Magnetism and Magnetic Materials. 408(2016)168–176

Experimental Materials.
Firstly, the liquid materials (MDI-L and MHHPA) were poured into a dissolver, the solid materials (PVC paste resin, AC and AIBN) were crushed by a grinder crusher, then the mixed powder was poured into the above liquid.
These peaks can’t be found in foam’s FTIR, which indicate that these materials have been reacted in boiling foam process.
[6] Y.H.Yan, Z.G.Huang, Q.Zhou: Journal of Qingdao Institute of Chemical Technology (in Chinese), Vol.20 (1999), p.208
[7] M.Danielsson, J.L.Grenested: Composites Part A: Applied Science and Manufacturing.