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A report presented in meeting of royal academy of science of turin. (1819) 21–80
ASCE, Journal of Hydraulic Division. 90 (1964) 23–55
Riguet, Hydraulic jump in a sloped trapezoidal channel, International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, TMREES15, Energy Procedia. 74 (2015) 251–257
Arvanaghi, Experimental study of the hydraulic jump on reverse bed with porous screens, Applied Water Science 155 (9) (2019)
KSCE Journal of Civil Engineering. 25 (2021) 124-139

Boland:Nature Materials Vol.4 (2005), pp. 525-529 [2] H.
Zhu:Computational Materials Science Vol. 41 (2008), pp. 553-560 [5] F.
Plimpton:Journal of Computation Physics Vol. 117 (1995), pp. 1-19 [8] J.
J.Bammann: Modeling Simulation Material Science Engineering Vol. 12 (2004),pp. 319-332 [9] C.

Fluorite flotation of a fluorite-bearing Pb-Zn tailings Siqing Liua, Xiujuan Lib, Min Zhang c, Wanping Wang d Department of Mineral Processing Engineering, Kunming University of Science and Technology, Kunming 650093, China a647647@163.com, b497522449@qq.com, c 282179895@qq.com, d 578607690@qq.com Keywords: Pb-Zn tailings; fluorite; flotation; modifier Abstract: Beneficiation of a Pb-Zn tailings containing 44.98% CaF2 was conducted by flotation using sodium hexametaphosphate and new reagents S180.
Seventy percent of fluorite products were used as metallurgy and building materials.
In addition, fluorite is the only raw material for producing hydrofluoric acid [2], so the consumption of fluorite in chemical industry increases in recent years Fluorite deposit includes single and associated types with some accessory minerals such as Pb-Zn sulphides, W-Sn sulphides and pyrite.
Experimental Materials.
Kondrat: submitted to Journal of Mining Science(2010)

Material Parameters.
Actually in most tests of metal material, acoustic emission wave frequency maintains around 150KHZ, which belongs to high frequency.
Actually in most tests of metal material, acoustic emission wave frequency maintains around 150KHZ, which belongs to high frequency.
[4] Yue Jianjun, Liu Tuguang: Analysis on the response of elastic plates subjected to transverse impact,  Ship Science and Technology, vol. 27 (2), 2005, p. 27–32
[5] Zhang Tao, Wang Duo: Study of Impact on Elastic Plates with Low Velocity, Journal of Harbin Institute of Technology, vol. (2), 1989, p. 19–24.

It is evident that the silicon etching process occurs under the catalyst material only, as can be seen in Fig.1.
Li, Current Opinion in Solid State and Materials Science 16 (2012) 71
Patriarche, Materials Science and Engineering 6 (2009) 012015
Mazzoldi, Journal of Non-Crystalline Solids 194 (1996) 225.

Influence of Alloying Elements Zr, Nb and Mo on the Microstructure and Magnetic Properties of Sintered Pr-Fe-Co-B Based Permanent Magnets Silva, M.R.M. 1a*, Fim, R.G.T.1, Silva, S.C.1, Casini, J.C.S.2, Wendhausen, P.A.P.3, Takiishi, H.1 1Nuclear and Energy Research Institute, Materials Science and Technology Center – São Paulo, Brazil 2Federal Institute of Education, Science and Technology of Rondônia – Rondônia, Brazil 3Federal University of Santa Catarina – Santa Catarina, Brazil a*melissa.rohrig@hotmail.com Keywords: Rare-earth permanent magnets; Pr-Fe-Co-B based magnets; hydrogen decrepitation.
The increasing demand for clean energy, allied to Chinese restrictions to rare earth exportation and high prices, boosted the research in this class of materials [2, 3, 4].
Hydrogen (H2) was introduced with pressure of 2,000 mBar, which was absorbed by the alloy, forming hydrides and making the material friable, facilitating the obtainment of fine powders.
Liu: Journal of Physics D Applied Physics Vol. 46 (2013), p. 23

Introduction Barium cerate (BaCeO3) is a ceramic material with perovskite structure.
There are many possibilities of its using, for example as solid electrolytes in solid oxide fuel cells [3] or as a functional material for semiconductor gas sensors [4].
As a standard reference material was used LaB6 from NIST.
Zmorayová, Microstructure of YBCO bulk superconductors with CeO2 addition, Materials Science and Engineering B 151 (2008) 7-10
Piovarči, Influence of Y2O3 and CeO2 additions on growth of YBCO bulk superconductors, Journal of Crystal Growth 356 (2012) 75-80

With the development of new materials and 900 MPa grade high strength steel widely used, effectively and quickly advanced lightweight boom, boom length for expansion has played an important role in promoting.
The remaining section of arm ranges 0 ° ~ 270 ° in between the body can turn cloth material for 360 ° rotation rod; C.
Material Properties Material for the Q690： Elastic modulus ；Poisson coefficient ratio ；Density Tab.4-1 Natural frequency for 10 steps mode shape diagram Nature frequencies(Hz) 1 0.58551 2 0.79748 3 2.0924 4 2.5973 5 4.2967 6 4.9169 7 6.611 8 8.2617 9 12.871 10 13.991 Ｃ.
[J ] building survey mechanization,2004,(3)pp9-10 [2] Xiao yongqing .. concrete-pump car: Technology decides whether machine ，2009，（8）pp66-68 [3] Cao shuqian ,zhang wende,xiao longxiang .Vibrating structure,modal analysis, the theory and application . tianjing: tianjing university press 2001.pp102-138 [4] Li debao lu qiuhai Experimental analysis and application modal beijing : science press ,2001.pp68-189 [5] Ramji K., Goel V.K., Rao S.A.S.O., et al.
Journal of the Institution of Engineers (India):Mechanical Engineering Division, 2007, 87(1):pp 7-17

For example: bottom residue can be used as embankment fill, road base materials, asphalt concrete pavement filler and cement concrete pavement admixture;ESP fly ash is a good admixture for construction of dam and highways.
The building blocks, produced of lightweight fly ash, with characteristics of insulation, heat insulation and sound-absorbing is a good building materials.
The thermal efficiency of the boiler measures including the high fever boiler economizer and the transformation in the lower temperature and the new material to the boiler insulation have to reduce the loss of two parts.
Acknowledgment This work was financially supported by the China National Coal Association Science Foundation (MTKJ-2010-342), the support of a research grant from the scientific and technological development plan project of Qingdao Municipal (KZJ-50).
Coal-fired power plants water-saving technology [J].Journal of power systems engineering, 2010, 26:69-70 [3]Yuan Yong-tao.

Introduction As materials science and engineering progress, attaining a top-quality welded structure is expected greatly.
Experimental material and methods The base metal selected 6061 aluminum alloy plate which size is 300 mm×300 mm×15mm and welding wire selected ER5356 which diameter is 1.2mm.
Acknowledgment The authors gratefully acknowledge support for this study from the National Natural Science Foundation of China (No.50975286; No.50735006) and Foundation (No.9140A27040310OC8501; No.9140C85020210OC8505).
References [1] GUO Xu-ming, YANG Cheng-gang: Journal of Aeronautical Materials, Vol. 27 (2007), p.18