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Study of dust production mechanisms during the rotary dumping of powdered materials in hemi-enclosed space Shenghua Zou1,a, Dengchun Zhang1,b, Wei Yin1,c, Si Zou2,d 1School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China 2School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200000, China azsh199074@263.net, bdczhang2000@126.com, cbecause2006@vip.sina.com,dzousi99@163.com Keywords: hemi-enclosed space; powered materials; rotary dumping; mechanism of dust production Abstract.
The mission of its raw material workshop is to provide raw materials to the sintering production line.
At first the materials are carried by train to the dumper, and then the powered materials are taken into the storage from the dumper.
The materials in the falling process occupy portion of capacity in the mine warehouse.
(2)The airflow volume during the rolling of the train is pertinent to the mass and volume of the materials, the height and velocity of the materials (including the rotary velocity of the container and dumping velocity of the materials), and the surface area of the container

The materials used for MEMS packaging are mainly include, ceramics, metals and plastics, etc.
Packaging Materials MEMS devices of different the packaging materials are also different for requirements, on the whole, the requirements of packaging materials for MEMS are follow: Ceramic packaging material: Ceramics is hard and brittle materials with high Young's modulus, the features of reliable, plastic, easy to seal and other make ceramics occupies an important position in the field of electronic packaging.
Materials for Mechanical Engineering, 1999, 23(5):1-3
Journal of Electronic Packaging, 2004, 126:115-119
CHINESE JOURNAL OF SENSORS AND ACTUATORS. 2006.

Digital Etching of GaAs Materials: Comparison of Oxidation Treatments Mickaël Rebaud1,a *, Marie-Christine Roure1,b, Virginie Enyedi1,c, Lukasz Borowik1,d, Eugénie Martinez1,e, Laura Toselli1,f and Pascal Besson1,g 1Uni.
amickael.rebaud@cea.fr, bmarie-chistine.roure@cea.fr, cvirginie.enyedi@cea.fr, dlukasz.borowik@cea.fr, eeugenie.martinez@cea.fr, flaura.toselli@cea.fr, gpascal.besson@cea.fr Keywords: Gallium arsenide, III-V materials, surface passivation, digital etching.
Chemicals should not react with the bulk material.
Surface Science, 30 (1972) 91100
Graham, Ultraviolet-Ozone oxidation of GaAs(100) and InP(100), Journal of Vacuum Science & Technology B, 11(6) (1993) 20332037.

Along with the development of the high polymer and the needs of the production of the modern industry, engineering plastic as a new type of gear materials have been widely used.
Owing to the composite materials large deformation, the maximum and central oil pressure of the meshing point of composite gear pair engagement is obviously higher than steel-steel gear engagement.
Acknowledgements This work was financially supported by the National Natural Science Foundation of P.R.China through contracts no.51175275 and the Science and Technology Plan of Qingdao through contracts no.12-1-4-4-(2)-JCH.
Chinese Journal of Computational Mechanics, 2005, 22(5): 568~573
Zhang: Composite Material Gear[M], 1993 (Science Press of China) [5] L.

The article studies scientific approaches to the creation of biocompatible implant materials, considers their types, defines the basic requirements for biocompatible materials.
There are three groups of materials (Figure 1) Figure 1.
Therefore, modern science faces the task of developing these materials that can withstand the aggressive medium of the body, but at the same time guarantee a long service life and maintain the required qualities without negative responses in the body.
Implant materials and osteogenesis.
International Journal of Pharmaceutical Research. 2020; 12(4): 3454-3463.

A computation of the elastic properties of composite materials is another problem of the mechanics of composite materials.
The properties of materials are given in Table 3.
Maturity of 3D failure criteria for fibre-reinforced composites: Comparison between theories and experiments: Part B of WWFE-II (2013) Journal of Composite Materials, 47, pp. 925-966
Micromechanical finite element analyses of fire-retarded woven fabric composites at elevated temperatures using unit cells at multiple length scales (2012) Computational Materials Science, 55, pp. 23-33
Mechanics and analysis of composite materials (2001) Elsevier Science Ltd.

Material Analysis and Structural Study on Powering Divider of Herbage Harvester Chunhua Zhao 1,a ， Yalan Luo 1,b 1Engineering college, Gansu Agricultural University, Lanzhou 730070, China aemail: zhaoch@gasu.edu.cn, bemail: 591481244@qq.com Keywords: herbage; divider; metal materials; the simulation analysis.
In order to study stress deformation and distribution of powering divider on 4GH-120 herbage harvester at working time, main materials of the divider were analyzed, and mechanical model of the divider was established by finite element method.
The divider tooth was usually inserted grass and easily ran into hard things, such as stones, its material has the important influence on working performance, So, main materials of the divider were analyzed, and mechanical model of the divider was established by ANSYS to analyze stress deformation and sound field distribution of the stalks and sound scattering [2,3].
Design Model for the Powering Divider The materials of Powering divider tooth disk was made of 45 steel which was 3mm thickness.
Prostrate tangle stem biomechanical characteristics test at harvest time[J].Journal of Agricultural Machinery, 2010,41(6):65-69 [2] He Junlin, Hu Wei, Guo Yufu, ect.

Materials and Methods Chemical All chemicals were used with reagent grades.
[4] Pham Thi Thuy, Nguyen Thi Thanh Mai, Nguyen Manh Khai, Research and manufacture arsenic removal materials in water from red mud, Journal of Science, Hanoi National University: Earth Science and Environment, 2016, 32(1), 370 – 376
[11] Hanif, M.A., Nadeem, R., Bhatti, H.N., et al, Ni (II) biosorption by Cassia fistula (golden shower) biomass, Journal of Hazardous Materials, 2007, 139 345-355
Fibers, Journal of Hazardous Materials, 2007, 139(2) 280-285
[34] Naiya, T.K., Bhattacharya, A.K., et al., Sorption of lead (II) ions on rice husk ash, Journal of hazardous Materials, 2009, 163 1254 - 1264

A power-law distribution of material is applied between the two pure materials; a material property model of FGMs is built.
The materials at the top surface (z=h/2) and bottom surface (z=-h/2) are pure ceramic and metal respectively.
A power-law distribution of material is applied between the two pure materials.
Acknowledgements The Nature Science Fund of Jiangxi Province (20122BAB216027) supported this research.
References [1] H Minwoong, S Masano: Journal of composite materials in Japan, Vol. 13(1987), p.257~260

Kennedy: Materials Science and Engineering A, 1997. 237(2): p. 200-206
Xiao-Ling: Journal of Material Science, 2000. 35: p. 1907-1910
Abdulwahed: Journal of Materials Processing Technology, 1996. 56(1-4): p. 398-403
Burdett: Journal of Materials Science, 2000. 35(13): p. 3327-3335
Meek: Materials Science and Engineering: A, 2008. 473(1-2): p. 96-104.