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Smart Wheelchair Stair Lift Using RFID Detection Method and Fuzzy-PI with PLC Ladder Control FULL Songkran Kantawong Faculty of Engineering, Bangkok University, Pathumtani, Thailand Email: songkran.k@bu.ac.th Keywords: Wheelchair Stair Lift, Fuzzy-PI Control, PLC Ladder Control, RFID, CDM, Stair guide Rail, Steering Gear Box.
System Block Diagram Wheelchair Stair Lift Mechanism Module Design The wheelchair stair lift plat form is shown in Fig. 3 that are consisted of five main parts such as lamp lift plate, two independent safety arm rods, control box unit, key pad control and stair guide rail coupling units.
The simulation results of material strength is revealed that the maximum yield strength is equal toare appeared at the both end sides of the plate that have less than material yield strength rated at , while the elastic modulus is equal to and the Poisson ratio is equal tothat have less than the critical values.
The displacement change is equal to in loading situation that are occurred at the both end sides of the scissor beams and not important effect to this material strength.
The matlab simulations are done for F-PI control and fuzzy ladder control, while the solid work simulations program version 2010 are done for testing the material strength, elastic modulus and displacements.

Numerical Simulation of Directionally Solidified Industrial Gas Turbine Hollow Blades by Liquid Metal Cooling Xuewei Yan1, a, Ning Tang1, b, Xiaofu Liu2, c, Xinli Guo2, d, Guoyan Shui2, e, Qingyan Xu1, f* and Baicheng Liu1, g 1Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China 2Shenyang Research Institute of Foundry, Shenyang 110022, China ayanxuewei2013@gmail.com, btangn08@mails.tsinghua.edu.cn, cliuxf-01@163.com, dgxl1672@163.com, edjtushgy@163.com, *，fscjxqy@mail.tsinghua.edu.cn, gliubc@tsinghua.edu.cn  Keywords: Industry gas turbine blades, Liquid metal cooling, Directional solidification, Numerical simulation.
Gas turbine blades, as a key part used in industrial gas turbines often serve at high temperature and in a harsh environment [2].
Thompson, Aircraft gas turbine material and process, Science. 208 (1980) 847-856
Li, Material and processing technology of directionally solidified blade in heavy duty industrial gas turbines, Mater China. 32 (2013) 12-23

Study on Countermeasures for Sustainable Development of Resources-exhausted Cities Runhe Cheng 1,a 1College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China acrh2086@gmail.com Keywords: Rescource-exhausted city; Countermeasures for sustainable development; transformation Abstract：Resources-exhausted cities in China have made momentous contributions to the development of the national economy for decades. with the depletion of natural resources, environment worsening, unemployment rate increasing , their sustainable development is challenging and transition is important.
According to strict national plans, the main task of these cities was to produce energy and raw materials at low prices (below market price) [6].
This in turn can promote the exchange of substance, energy, and information among different productions or product flows in the same industry. (3) Regional level: Connect raw material– product–waste among different enterprises in different regions, based on the benefits sharing mechanism and the regional labor division or technical and economic cooperative relations.
Construction of an ecological industrial system is the key step for promoting a positive cycle of resources, environment, and socio-economy.
They are as follows: (1) Coal mine-based city’s energy industrial chain of “mining–washing coal–electricity generation–building materials–pollutant recycling”. (2) Petroleum industry-based city’s chemical industrial chain of “oil exploiting–oil refining–pollutant recycling”.

Effect of rapid quenching in magnetic field on the microstructures and electrochemical performances of AB5-type alloys Yougen Tang, Chenxi Jiang, Yazhi Wang, Xiaopei Gao, Jinbao Zhang Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education, School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Email：ygtang@263.net Keywords: AB5-type hydrogen storage alloys; rapid quenching; magnetic field; microstructures; electrochemical performances Abstract.
Introduction Energy crisis and environmental pollution are strongly concerned recently, which simultaneously accelerates the development of new energy materials.
Among various materials considered to store hydrogen, hydrogen storage alloys have been widely used for negative electrode of nickel metal hydride batteries regarded as the preferred rechargeable batteries for portable power tools, EVs, HEVs, and PHEVs at present [2, 3].
On the other hand, the important role of magnetic field in preparation of materials was concerned by more and more people.

FEM Simulation of PD Acoustic Signal Propagation in Transformers Yue Dong1, a, Yong Qian2, b, Haifeng Ye2, c, Xiuchen Jiang2, d 1State Grid Jiangxi Electric Power Company Maintenance Branch, Nanchang, 330096 2Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 asaron_77@163.com, bqian_yong@sjtu.edu.cn, cyhf2010@sjtu.edu.cn, dxcjiang@sjtu.edu.cn Keywords: transformers, partial discharge, ultrasonic wave, propagation property, FEM, numerical calculation Abstract.
Introduction PD measuring and positioning is of key importance to the maintenance and the evaluation of service life to risk.
But in comparison with FEM, FDTD has limited properties that are impossible to be overcome: FDTD cannot deal with geometries with complicated shapes nor boundary problems of different materials.
The material of the windings is copper, whose density is 8700 kg/m3 and in which the sonic velocity is 4760 m/s.
Proceeding of the 2001 IEEE International Symposium on Electrical Insulation Materials, Himeji, Japan, 2001:583-586 [3] Akumu, A.O., Adachi, F., Kawaguchi, N., Ozaki, R., Thori, H., Fujii, M., Arii, K.

Acknowledgement This study was supported by the special funds of research institute for technology development and research－Development of the key technology for the industrialization of environment friendly low temperature lead-free solder.
Research status and trends of electronic packaging materials [J].
Materials Science & Engineering A, 2014, 592(3):28-39
Advanced Materials Research, 2013, 652-654(18):1106-1110

Materials and Methods Description of sample collection.
Scheffknecht, Use of wood dust fly ash from an industrial pulverized fuel facility for rendering, Construction and Building Materials. 189 (2018) 825-848
Okmanis, Use of Wood Ash in the Forest and Its Effect on the Concentration of Essential and Heavy Metallic Elements in Soil and Blueberries (Vaccinium myrtillus L.), Key Engineering Materials. 850 (2020) 179-183

Monceau 4,d 1 Faculty of Engineering and Computer Sciences, FH Osnabrück University of Applied Sciences 49009 Osnabrück, Germany 2 Betriebsforschungsinstitut - VDEh, Düsseldorf, Germany 3 Institut für Werkstofftechnik, Universität Siegen, Germany 4 CIRIMAT CNRS-INPT-UPS, ENSIACET, Toulouse, France a u.krupp@fh-osnabrueck.de, brobert.orosz@bfi.de, cchrist@ifwt.mb.uni-siegen.de, d daniel.monceau@ensiacet.fr Keywords: Nickel-base alloys, creep, cyclic oxidation, internal oxidation, internal nitridation, embrittlement.
At very high temperatures, solid-state diffusion of both the corrosive species and the metallic alloying elements is the key issue of high-temperature degradation.
The results show clearly that components or materials of low wall thickness and/or sharp edges exhibit a particular susceptibility to "breakaway oxidation" in combination with massive internal attack.
Acknowledgments The financial support by Deutsche Forschungsgemeinschaft (DFG) and the supply with the test materials Alloy 80A (Nicrofer 7520 Ti) by Krupp VDM, Altena, Germany, and CMSX-4 by Alstom, Baden, Switzerland, is gratefully acknowledged.
Christ: Materials and Corrosion, Vol. 57 (2006) p. 154 [21] R.

Influence of Fining Temperature on Glass Qualities Xiao Qing Liu 1, a, Jun Lin Xie 2,b 1 Department of Applied Chemistry, Wuhan University of Technology, Wuhan, 430070, China 2 Key Laboratory of Silicate Materials Science and Engineering, Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China alczr@whut.edu.cn, bxjlclxy@126.com Keywords: Fining Temperature, Glass Quality, Reduced Temperature Fining Technology Abstract.
Němec: Advanced Materials Research, Vols. 39-40 (2008) p 413 [4] J.
Kloužek, in: Advanced Glass Materials and Innovative Glass Melting Technology in the Year 2020, Brig, Switzerland, March 26-29, (2008) [9] A.

Doping Effect of Alkali Ions on the Microstructural and Electrical Properties of ZnO-Pr6O11-based Varistor Ceramics Zhijian Peng1,a, Feng Jiang1, Hai Feng1, Xiuli Fu2,b 1School of Engineering and Technology, China University of Geosciences, Beijing 100083, China 2School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China apengzhijian@cugb.edu.cn; bxiulifu@bupt.edu.cn Keywords: ZnO varistor; Pr6O11; Alkali ion; Doping; Electrical properties Abstract.
Although the main composition of ZnO ceramic varistors is ZnO, the key dopant that imparts them non-ohmic property, known as varistor-forming oxide, are Bi2O3, Pr6O11, and so on, which contains metal of large radius and has high electrical resistance, by which ZnO-based varistors can be classified.
Reagent grade raw materials were first mixed in de-ionized water by ball-milling for 24 h with high-resistant ZrO2 balls as media.
Materials characterization.
The reason for this phenomenon might be that Li+ ion doping could introduce a deep acceptor level and induce an insulating behavior or even a ferroelectric behavior in ZnO-based materials [12,14].