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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 microstructure and electrochemical performance of the nano-composite electrode materials were studied by AFM, XRD and electrochemical methods.
Nowadays, the candidates of electrode materials include porous carbon material with high specific surface and transition metal oxides, specially activated carbon (AC) and MnO2 electrode material[4-5].
Bao: Chinese Journal Functional Materiars， Vol. 34(2003), p. 550 (In Chinese) [6] S.
Zhu: Progress in Natural Science， Vol. 16 (2006）p. 441 [9] S.J.
Xu: Journal of Chemical Industry and Engineering, Vol. 59 (2008）, p. 514 (In Chinese)

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.

Experimental Stoichiometric amounts of lithium acetate, cobalt acetate and ammonium dihydrogen phosphate were used as starting materials.
Citric acid was used as chelating agent that favored the complexation inducing the molecular level mixing of the mixture solution comprising the starting materials.
Conclusion LiCoPO4 composites was successfully prepared by means of sol–gel method and exploited as cathode materials for lithium ion batteries.
[5] Erwan Dumont-Botto, Carole Bourbon, Sébastien Patoux, Patrick Rozier and Mickaël Dolle, “Synthesis by Spark Plasma Sintering: A New Way to Obtain Electrode Materials for Lithium Ion Batteries,” Journal of Power Sources, Vol.196, pp. 2274–2278, 2011
Periasamy, “CAM Sol–Gel Synthesized LiMPO4 (M=Co, Ni) Cathodes for Rechargeable Lithium Batteries,” Journal of Sol-Gel Science and Technology, Vol. 49, pp.137–144, 2009

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.

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.

First principles study on rutile SnO2 improving gas sensor properties of porous SnO2-In2O3 composites Yu Cao1,2,a, Xiaolong Zhou1,2,b, Jianchun Cao1,2,c, Yuanyuan Peng1,2,d, Jingchao Che,1,2,e,Jie Yu1,2,f 1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China 2Key Laboratory of Rare-Precious and Nonferrous Metal Advanced materials (Kunming University of Science and Technology), Ministry of Education, Kunming 650093, China a connor521@foxmail.com, b kmzxlong@163.com, cnmcjc@163.com, dailababala@yahoo.com.cn, e chenjingchao@kmust.edu.cn, fyujieone@163.com Keywords: porous SnO2-In2O3 composite materials; first principles; rutile; crystal plane; CO gas sensitivity Abstract: we built the rutile SnO2 to study SnO2 improving gas sensor properties for rutile structure of SnO2 existing in the SnO2-In2O3 composite materials by X-ray analysis.
Introduction Metal-oxide has been traditionally used as gas-sensing materials. porous materials, thin film materials and composite materials have become the important research directions of gas-sensing materials.
Journal of Physics and Chemistry of Solids.
Surface Science.
Journal of Functional Materials and Devices(In Chinese).

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.

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

Kennedy: Materials Science and Engineering A, 1997. 237(2): p. 200-206
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Meek: Materials Science and Engineering: A, 2008. 473(1-2): p. 96-104.