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To date, most implantology research has focused on the type of prosthetic connection to implants, the nature of retaining screw materials and the distribution of the stresses through implants under masticatory forces.
The macro-design is considered to be the key factor in the success of an immediately loaded implant [9].
Materials and Methods Three groups of threaded cylindrical Titanium-TPS surface implants (Premium, Sweden & Martina, Italy) with internal connections were analysed using FEA.
All materials used in the model were considered to be isotropic, homogeneous, and linearly elastic with their elastic properties listed in Table 1.
Mechanical properties of materials used in the 3D finite element models Materials Young’s Modulus [MPa] Poisson’s Ratio Cortical bone 14,000 0.30 Cancellous bone 1370 0.30 Titanium 110,000 0.35 3D finite element analysis was used for the quantitative evaluation of implant and surrounding bone stresses.

Introduction Gas–solid bubbling fluidized beds have been widely used in Industry, and their applications often involve the mixture of bed materials of different sizes, shapes and densities for an identified fuel source.
Liu, “CFD simulation of hydrodynamic characteristics in a multiple-spouted bed,” Chemical Engineering Science, vol. 80, 2012, pp. 365–379
Anantharaman, “Hydrodynamic studies on three-phase fluidized bed using CFD analysis,” Chemical Engineering Journal, vol. 155, 2009, pp. 207–214
Harrison, “Characterization and control of bubbling behavior in gas-solid fluidised beds,” Control Engineering Practice, vol. 17, 2009, pp. 67-79
Johnsson, “Biomass mixing in a fluidized bed biomass gasifier for hydrogen production,” Chemical Engineering Science, 62 (2007) 636-643

It is suggested that the sealing length of cement plug in marine abandoned wells should be increased when the engineering and economic conditions can be satisfied, so as to improve the sealing safety of cement plug.
Acknowledgements This work is financially supported by the Key Program of National Natural Science Foundation of China(U1762211),the National Natural Science Funds(51674272) and the Sinopec Engineering Company Project(SG18-29K).
Spe Drilling Engineering, 1992, 7(4):291-296
Journal of Rock Mechanics and Engineering, 1994, 13 (2): 160-167
Journal of Petroleum Science and Engineering, 2018,170:1-13

Influence of substrate temperature on the structural, electrical and optical properties of Al-doped ZnO films by RF magnetron sputtering Yihua SUN1, a, Chenhui LI2, b, Weihao XIONG2 and Caihua Huang1 1College of Mechanical and Material Engineering, China Three Gorges University, Yichang 443002, China 2State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China asunyihua316181@163.com, bli_chenhui@sohu.com Keywords: Al-doped ZnO; Magnetron sputtering; Deposition temperature; Transparent conducting oxide Abstract.
Introduction Transparent conducting oxide (TCO) films are novel function materials which have been widely used in high-technology, military and civilian applications, such as transparent electrodes of solar cells, flat panel devices and the like, especially for indium tin oxides films (ITO) [1-3].
Recently many “non-In” materials such as Al-doped ZnO film (AZO film) have attracted much attention as an alternative material of ITO due to its cheap and abundant raw materials, non toxicity, and good stability in hydrogen plasma [2-4].
A sintered ceramic sputter target with a mixture of ZnO (99.99% purity) and Al2O3 (99.99% purity) was employed as source material.

Synthesis, Structure and Thermal Analysis of Zn(II)－Bi(III) Hetrometallic Complex with ethylenediaminetetraacetate DENG Hong-Quan1,a, JIANG Qi-Ying2,b*, XU Jian-Rong3,c, HU Ya-Min1,d 1Department of Chemistry, Southwest University of Science and Technology, China 2Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, China 3 School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China adenghongquan@swust.edu.cn, bjqy_163@163.com, cxujianrong@swust.edu.cn, dhuyamin@swust.edu.cn Keywords: Heterometallic complex, Crystal structure, Zinc(II), Bismuth(III), Thermal analysis Abstract.
Introduction Heterometallic complexes have been intensively investigated because of their fascinating structural diversities, special characteristics and potential applications in various fields, i.e., magnetic, luminescence, non-linear optical materials, near infrared chiroptical sensors, single-source precursor, molecular adsorption, manufacture of light conversion devices and catalysis [1-5].
TG coupled with FT-IR is a useful method for thermal analysis as it monitors continuously both the time dependent evolution of the gases and the weight of the non-volatile materials (residue).
Experimental Materials and methods NH4Bi(edta)H2O (edta=ethylenediaminetetraacetate) was obtained according to reference [7].
Acknowledgments We gratefully acknowledge that this work was supported by State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology (10zkfk18) and Southwest University of Science and Technology(12syjs-09).

Study on the Preparing of Nano White Carbon Black by Silica Fume Zhi Xin1,a* , Guo Zhancheng2,b 1 University of Science and Technology Beijing, Beijing, 100083, China. 2 State Key Laboratory of Advanced Metallurgy, Beijing, 100083, China.
Materials All chemical reagent used in the synthetic procedures of this work were purchased from the Beijing Chemicals Co.
The first work was to test the performance of micro silica powder in details, micro silica powder raw materials were taken from Inner Mongolia Erdos metallurgy group ferrosilicon plant.
The effect of micro components of raw materials on micro silica powder purity.
The Chinese Journal of Process Engineering. 12, 2, 212-217.(2012) [8] Li qi, Guan hao.

Annealing Time Influence on Optical Characteristic of beta-FeSi2 Thin Film Xicheng Xiong a, Shuangshuang Kang b , Qian Chen c , Jin Huang d , Quan Xie* e and Jinmin Zhangf Institute of Advanced Optoelectronic Materials and Technology, College of Big Data and Information Engineering, Guizhou University, Guiyang City, Guizhou Province, 550025, China agoodxinan@126.com, bkangya1989.home@163.com, cChenzhangqianer@163.com, dmp3huang@126.com, eqxie@gzu.edu.cn, fjmzhang@gzu.edu.cn Keywords: Beta-FeSi2, Thin Film, Annealing Time, Influence, Optical Characteristic.
The beta-FeSi2 thin film has the excellent photoelectric characteristics, and it is an attractive novel photovoltaic semiconductor material.
Wang, Preparation of the Kondo insulators FeSi by magnetron sputtering, Materials Science Forum. 663-665(2011)1129-1132
Characterization and preparation of β-FeSi2/Si hetero structure, Journal of Functional Materials. 43(2012)1469-1471.
Makita, A thin-film solar cell of high-quality β–FeSi2/Si heterojunction prepared by sputtering, Solar Energy Materials & Solar Cells. 90(2006) 276-282.

Wang Department of Mechanics and Engineering Science, Liaoning Technical University, Fuxin 123000, China wxbbb@263.net Keywords: Size effect, Shear band, Fracture energy, Stress-strain curve, Strain gradient.
For quasi-brittle materials (rock, concrete, ice, cement, mortar, masonry and ceramic, etc), size effect can be observed in tests, such as uniaxial and multiaxial compressions, direct and indirect tensions, direct and simple shear, torsion, and threepoint bending.
Shear strain localization or shear band (SB) with a certain thickness can be observed in many tests for quasi-brittle materials.
After localization is initiated, the quasi-brittle material outside SB is still elastic and unloads elastically according to the elastic modulus E .
Pan: Key Engrg.

A Single-Phase Full-Color Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ Micron Belt Mat for White-Light Emitting Diode Application Bo Cui1,a, Qinghong Zhang1, Hongzhi Wang1,b* and Yaogang Li2 1 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials, Donghua University, Shanghai, 201620, People’s Republic of China 2 Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai, 201620, People’s Republic of China a cui2005bo@126.com, b wanghz@dhu.cdu.cn Keywords: Electrospinning, Micron belt mat, oxyfluoride, White-lighe emitting Abstract.
Introduction The inorganic phosphor materials developed fast due to their wide applications.
A lot kinds of materials like organic, inorganic, and organic–inorganic composites have been reported to be suitable for electrospun to form uniform fibers.[11–14] The membranes fabricated via electrospinning have uniform diameter, a large specific surface area and a large aspect ratio, which contribute to their wide use.
Wendorff, Electrospinning of manmade and biopolymer nanofibers- progress in techniques, materials, and applications, Adv.

A new chromate-free insulating coating on silicon steel Shuanghong WANG 1, a *, Yongfeng LONG 2,b, Shilu ZHAO2,c, Chengqiang An3,d and Ke Ding 3,e 1 School of Mechanical Engineering, Shenyang University, Shenyang 110044, China 2 Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China 3 Shenyang Rustproof Packaging Material Co., Ltd Shenyang 110033, China a w.shuanghong@163.com, b yongyeyongfeng@126.com, c zhaoshilu@sina.com, d acq306@163.com, e dingker2005@163.com Keywords: Insulating coating; Chromate-free coating; Silicon steel; Electrical steel Abstract.
The silica and alumina sol-gel films were deposited onto steel by these sol-gel derived materials[10, 11], but this sol-gel method overly relied on ethanol solvent.
Materials and Methods Commercial non-oriented silicon steels (50PRW600, made in Ruizhi Electrical Steel Company of China) having 15 cm in length and 4cm in width were used as the test material.
Materials Science & Technology, Vol. 21 (2013) p. 109 [10] D.