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Development of the Tunnel Wet Dust Precipitator and Testing Ling Shi1.2,a, ChengWu Yang1.2,a,XinMing Yu1.2, XianWei Luo3 1School of chemistry and environmental engineering, Jianghan University, Hubei Wuhan 430056 2Hubei Key Laboratory of Industrial Fume & Dust Pollution Control, Hubei Wuhan 430056 3Tongkeng mine China Tin Group CO.
Fig.1 Feature of the centrifugal net disc Fig.2 Structure profile of the wet dust precipitator 1Diffuser 2water purifier 3 support 4 Nozzle 5 centrifugal net disc 6 draining hole 7 collecting water tank 8 Diffuser Experiment Results The wet dust precipitator is mounted at the discharging mine platform for application testing under a mine tunnel in Guangxi somewhat mine.
It is structure characters that the usage of centrifugal net disc is parallel in one cross-section and serial in axial.

The value and structure of the nanoparticles were analyzed by Perkin Elmer- Fourier transform infrared (FT-IR) spectrometer in the wavelength of 400 – 4000 cm-1 in KBr pellets.
Acknowledgements The authors like to acknowledge the Department of Physics, Chemistry and Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, India for providing characterization facilities.
Siva, Biological approach to synthesize TiO2 nanoparticles using Aeromonas hydrophila and its antibacterial activity, Spectrochim Acta A Mol Biomol Spectrosc.107 (2013) 82–89 [7] C.Karthikeyan, M.Thamima, S.Karuppuchamy, Dye removal efficiency of perovskite structured CaTiO3 nanospheres prepared by microwave assisted method, Materials Today: Proceedings,(2019) https://doi.org/10.1016/j.matpr.2019.05.421

Ivchenko, Atomic structure of cascades of atomic displacements in metals and alloys after different types of radiation, IOP Conf.
Togambayeva, Structure and optical properties of SiO2 films with ZnSe nanocrystals formedby ion implantation, Surface Coatings Technology. (2018) 596-600
Kupchishin, Structural Features and Tribological Properties of Multilayer Coatings Based on Refractory Metals, Protection of Metals and Physical Chemistry of Surfaces. 54 2 (2018) 240-258

The morphologies and chemistry structures of original and poly(dopamine)-modified PAN nanofibers were analysed in this paper.
The chemical structures of the original and poly(dopamine)-modified PAN nanofibers were further measured by ATR-FTIR and the spectra were shown in Fig.2.

CB is mainly composed of cellulose, hemi-cellulose and lignin, which has highly branched structure consisting of glucose and phenyl propane units.
We speculate that a lot of aromatic rings in the LCBER-60 cause the changes in Tg, for the reason of that a highly branched aromatic structure in the epoxy resins can enhance the rigidity of the molecular chains and restrict the motion of the molecular chains.
Fierz-David: Chemistry and Industry, Rev.

It is found the melting temperatures Tm of a stable Si (bulk or nc) and Ge in diamond structure decrease as the pressure P increases, or dTm/dP < 0 since ρl > ρs where ρ denotes the density and the subscripts l and s show liquid and crystal, respectively [2-8].
Si Ge Si Ge Tm0(K) [13] 1687.0 1211.4 κL(10 -11Pa -1) [14] 10.0 10.0 M(gmol-1) [13] 28.09 72.64 a(nm) [13] 0.543 0.566 Vs(cm3mol-1) [13] 12.06 13.63 h(nm) 0.235 0.245 ρL(gcm-3) [14] 2.57 5.61 ∆Svib(Jmol-1K -1) [16] 6.77 4.60 VL(cm3mol-1) 10.93 12.95 f(Jm-2) 3.75 2.11 B(GPa) 100 [13] 75 [15] γ(Jm-2) [14] 0.727 0.581 κs(10 -11Pa -1) 1.0 1.3 ∆Hm0(KJmol-1) [13] 50.2 31.8 0 2 4 6 8 10 800 1000 1200 1400 1600 Tm [K] P [GPa] Liquid bulk Si nc Si 0 1 2 3 4 5 900 1000 1100 1200 Tm [K] P [GPa] Liquid bulk GeNote: Vl is determined by M/ρl. κs is calculated by 1/B with B denoting the bulk modulus. h is determined by (3 1/2/4)a with a being the lattice parameter for diamond structure and f is determined by Eq. (2).
Weast: CRC Handbook of Chemistry and Physics, 69 th edition, (CRC Press, Inc., Boca Raton, Florida, 1988-1989), p.

Synthesis of Al2O3/TiAl In situ Composites from Ti-Al-TiO2-Cr-V2O5 Kun Zhang a, Fen Wang b and Jianfeng Zhu c Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, 710021, China asifan279318474@163.com, bWangf@sust.edu.cn, czhujf@sust.edu.cn Keywords: TiAl composites, Al2O3, microstructure, mechanical properties Abstract.
From the high magnification photo (Fig. 2(b)), typical lamellar structure of matrix is obviously observed and no clear pores can be found.
The increase in the mechanical properties is attributed to the unique structure features, including duplex microstructure, refined grain size, and a second reinforcement Al2O3.

Synthesis and Property of a New Photochromic Diarylethene Bearing a six-membered pyrimidine moiety Hongliang Liu, Xue Li and Shouzhi Pu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang, Jiangxi Province, 330013, P.R.China pushouzhi@tsinghua.org.cn Keywords: Diarylethene, Pyrimidine, Photochromism, Fluorescence, Optical storage recording Abstract.
The structures of diarylethenes 1o were confirmed by NMR. 1H NMR (400 MHz, CDCl3, TMS): δ 2.02 (s, 3H, -CH3), 3.72 (s, 3H, -OCH3), 3.82 (s, 3H, -OCH3), 3.99 (s, 3H, -OCH3), 6.84 (t, 1H, J = 8.0 Hz, benzene-H), 7.03 (s, 1H, thiophene-H), 7.10 (d, 1H, J = 8.0 Hz, benzene-H), 7.16 (s, 1H, benzene-H), 7.28 (d, 1H, J = 8.0 Hz, benzene-H), 8.33 (s, 1H, pyrimidine-H); 13C NMR (100 MHz, CDCl3, TMS): δ 14.22, 54.25, 54.74, 55.30, 104.08, 113.18, 118.10, 122.69, 126.03, 130.07, 134.62, 139.66, 141.93, 158.25, 159.05, 159.98, 166.06, 167.99.
The significant difference in absorption bands of the closed-ring isomers compared to their open-ring isomers is mainly due to the increase in π conjugation, which dramatically changes the electronic structure as a whole in such a way that new electronic transitions are observed in the visible region [12,13].

Delayed Fatigue of Hydroxy- and Fluorhydroxyapatite Ceramics in Simulated Body Fluid S.M.Barinov, I.V.Fadeeva, L.V.Fateeva, S.V.Tumanov Institute for Physical Chemistry of Ceramics RAS, Ozernaya 48, Moscow, 119361, Russia, email barinov_s@mail.ru Keywords: biomaterials, ceramics, hydroxyapatite, fluorhydroxyapatite, mechanical properties, dynamic fatigue, stress corrosion Abstract.
The incorporation of fluoride ions into the structure of hydroxyapatite (HA) can stimulate bone cell proliferation and increase new mineral deposition in cancellous bone [3].
For this purpose, partial substitution of fluoride for OH groups in the apatite structure can be considered as a further prospective in the bioceramics research and development.

Tighe b Biomaterials Research Unit, Chemical Engineering and Applied Chemistry, Aston University, Birmingham, B4 7ET, United Kingdom a campbeld@aston.ac.uk b b.j.tighe@aston.ac.uk Keywords: zwitterionic, copolymers, hydrogel, biomaterial Abstract.
The SPDA copolymer and charge-balanced copolymer hydrogels are less responsive to reduced molarity of the media than hydrogels of similar structure without balanced charge.
The zwitterionic copolymers display little change towards the decrease in molarity whereas the charge-balanced polymers display a collapse of structure with decreasing molarity.