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Correction to: Polymer-based interconnection cables to integrate with flexible penetrating microelectrode arrays

Biomedical microdevices 2017年第4期19卷 96页

作者： Keonghwan Oh Donghak Byun Sohee Kim Department of Medical System Engineering Gwangju Institute of Science and Technology Gwangju Republic of Korea. School of Mechatronics Gwangju Institute of Science and Technology Gwangju Republic of Korea. Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea. soheekim@dgist.ac.kr.

The original version of this article unfortunately contained a mistake. In Eqs. (1) to (3), the gas constant 'R' should be replaced with Boltzmann constant 'k .' This change accompanies the change in t...

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Effect of yaw angle on the global performances of Horizontal Axis Wind Turbine - QBlade simulation

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IOP Conference Series: Materials Science and engineering 2019年第1期595卷

作者： D E Husaru P D Bârsănescu D Zahariea Mechanical Engineering ' Gheorghe Asachi' Technical University of Iași Iași Romania Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iași Iași Romania Fluid Mechanics Fluid Machinery and Fluid Power Systems Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania

The yaw angle has a great importance in the wind turbine working. Even though most of the large turbines have yaw mechanisms, they do not have an instant response. The aerodynamic forces and torque on the blades fluctuate, depending on the yaw angle. The design and the numerical simulation of the wind turbine were performed with the Blade Element Momentum method in open source QBlade software. The power coefficient, torque, thrust and power output generated by wind turbine in non-yawed flow were analysed. The simulations have been performed for non-yawed flow, in rotational speed range between 2100 and 3300 rpm and wind velocity of 15 m/s. Simulations for yaw angle range have been performed between ± 60°, with 5° step at rated rotational speed of 2700 rpm. The results are presented through charts for global parameters in both non-yawed flow, and yawed flow. The effect of yaw angle on global performances of the wind turbines is more important after the value of 25° when the power output decrease with about 15% from power output in non-yawed flow. The average value of the exponent from conventional relation of power coefficient in yawed flow is 1.77 in good concordance with experimental tests.

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A proposal of an education system for manufacturing technology using M2M prototyping and its practice

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IEEJ Transactions on Fundamentals and Materials 2015年第11期135卷 655-665页

作者： Ohe, Nobuhiro Kitagami, Shinji Yonemori, Hironobu Inoue, Masahiro Shiotsuki, Tetsuo Koizumi, Hisao Melco Techno Yokohama 325 Kamimachiya Kamakura247-8520 Japan Global Information and Telecommunication Institute Waseda University 1-3-10 Nishi-Waseda Shinjuku-ku Tokyo169-0051 Japan Department of Mechanical and Electronic Engineering Salesian Polytechnic 4-6-8 Oyamagaoka Machida194-0215 Japan Department of Electronic Information Systems Shibaura Institute of Technology 307 Fukasaku Minuma-ku Saitama337-8510 Japan Department of Robotics and Mechatronics Tokyo Denki University 5 Senju-asahi-cho Adachi-ku Tokyo120-8551 Japan M2M Study Group NPO Organization 388 Fujisawa Fujisawa251-0052 Japan

In recent years, industry has come to require manufacturing systems that provide greater added value. Therefore, education systems for manufacturing technology have been attracting attention of concerned professionals. Machine-to-machine (M2M) system technology creates new added value by combining technologies such as sensors, networks, and information processing. It also provides wider application ranges. This paper proposes an education system for manufacturing technology using M2M prototyping. The proposed system encourages students to learn manufacturing technologies with combined composition elements. Students of the science and engineering course and the IT course used this proposed system, which enables creation of ideas and needs through manufacturing. This paper also describe the results of the evaluations. Copyright © 2015 The Institute of Electrical Engineers of Japan.

关键词： Manufacture

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Thin coatings for pumping station mechanical components

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IOP Conference Series: Materials Science and engineering 2019年第1期591卷

作者： C Cirlan Paleu V Paleu B Istrate N Cimpoesu C Munteanu 'Gheorghe Asachi' Technical University of Iasi Mechanical Engineering Faculty Mechanical Engineering Mechatronics and Robotics Department 63 D. Mangeron Blvd. 700050 Iasi Romania 'Gheorghe Asachi' Technical University of Iasi Faculty of Material Science and Engineering Dept. of Materials Science 67 D. Mangeron Blvd. 700050 Iasi Romania

The pumping stations are key points of water treatment plants, their performance directly affecting the serviceability of the entire water treatment system. The excessive wear of mechanical components conducts to pumping station out of service state. The deposition of thin coatings on the elements subjected to wear can generally extend the operating time of the water treatment plants. The paper analyses the failure modes of the mechanical components of the pumping stations and the existing efficient solutions for thin coating deposition to protect them from excessive wear. Consequently, an effective coating is deposited on the raw metal by Atmospheric Plasma Spraying (APS) and tribological tests are developed for an initial assessment of the anti-wear properties of the coating. The worn contact surfaces are analysed by Scanning Electron Microscopy (SEM) and the chemical composition is established by Energy-dispersive X-ray spectroscopy (EDS). The tests are still in development, revealing that the main failure modes of the coating are abrasive wear and delamination. Future research will be conducted to identify the best combination of powders for a multiple layer deposited coating with high wear resistance.

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Numerical simulations for impact damage detection in composites using vibrothermography

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IOP Conference Series: Materials Science and engineering 2010年第1期10卷

作者： L J Pieczonka W J Staszewski F Aymerich T Uhl M Szwedo AGH University of Science and Technology Department of Robotics and Mechatronics Al. Mickiewicza 30 30-059 Krakow Poland Sheffield University Department of Mechanical Engineering Mappin Street Sheffield S1 3JD UK University of Cagliari Department of Mechanical Engineering 09123 Piazza d'Armi Cagliari Italy

Composite materials are widely used in many engineering applications due to their high strength-to-weight ratios. However, it is well known that composites are susceptible to impact damage. Detection of impact damage is an important issue in maintenance of composite structures. Various non-destructive image-based techniques have been developed for damage detection in composite materials. These include vibrothermography that detects surface temperature changes due to heating associated with frictional energy dissipation by damage. In the present paper numerical simulations are used to investigate heat generation in a composite plate with impact damage in order to support damage detection analysis with vibrothermography. Explicit finite elements are used to model ultrasonic wave propagation in the damaged plate. Simulated delamination and cracks induce frictional heating in the plate. Coupled thermo-mechanical simulations are performed in high frequencies using commercial LS-Dyna finite element code. Very good qualitative agreement between measurements and simulations has been obtained. The area of increased temperature corresponds very well with the damaged area in both experiments and simulations. Numerical model has to be further refined in order to quantitatively match the experiments. The main issues of concern are frictional and thermal properties of composites. The final goal of these research efforts is to predict damage detection sensitivity of vibrothermography in real engineering applications based on numerical models.

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Numerical study on the movement of air inside the inner cavity of a hovercraft model

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IOP Conference Series: Materials Science and engineering 2018年第8期444卷

作者： M S Pavăl A Popescu T Popescu D Zahariea D E Husaru Mechanical Engineering and Road Automotive Engineering Department 'Gheorghe Asachi' Technical University of Iaşi Iaşi Romania Fluid Mechanics Fluid Machinery and Fluid Power Systems Department 'Gheorghe Asachi' Technical University of Iaşi Iaşi Romania Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania

This article describes several numerical simulations on aerodynamic characteristics of an oval shaped hovercraft. The 3D model was created in CATIA V5 and numerical analysis was performed in ANSYS Fluent. For numerical simulation, the velocity at inlet section and air-clearance height were specified as input parameters, with stationary hovercraft, flat ground surface and the flexible skirt that does not deform under the influence of the pressure created as imposed conditions. Three different air-clearance heights and velocities at inlet section are analysed. The output results of the numerical simulations are mass flow rate, lift force, static pressure, velocity distribution and pressure inside hovercraft.

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Recent trends on organizational energy reduction policies and best practices in South-East Asia

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Materials Today: Proceedings 2023年 81卷 302-309页

作者： Sami Salama Hussen Hajjaj Mohamed Thariq Hameed Sultan Daryl Ian Paliath Lee Seng Hua Centre for Advanced Mechatronics and Robotics (CaMaRo) Universiti Tenaga Nasional Jalan IKRAM-UNITEN 43000 Kajang Selangor Darul Ehsan Malaysia Institute of Informatics and Computing in Energy (IICE) Universiti Tenaga Nasional Jalan IKRAM-UNITEN 43000 Kajang Selangor Darul Ehsan Malaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products (INTROP) Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia Department of Aerospace Engineering Faculty of Engineering Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia Aerospace Malaysia Innovation Centre (944741-A) Prime Minister’s Department MIGHT Partnership Hub Jalan Impact 63000 Cyberjaya Selangor Darul Ehsan Malaysia Department of Mechanical Engineering Universiti Tenaga Nasional Jalan IKRAM-UNITEN 43000 Kajang Selangor Darul Ehsan Malaysia Laboratory of Biopolymer and Derivatives Institute of Tropical Forestry and Forest Products (INTROP) Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia

Reports show that 40% of global carbon emissions come from energy consumed in buildings, so organizations around the world continuously seek ways to reduce their buildings energy consumption. Research identifies three main approaches; Retrofitting, the use of Low Carbon Buildings (LCB), and implementing Energy Management Systems (EMS). However, other factors could affect the success of these approaches; climate and local weather, building types, social acceptance, and implementation. This paper reviews and evaluates 50 reports on these implementations, and uses that evaluation to identify the most effective approach to reduce buildings carbon footprint. In this evaluation, authors used the reported success rate (in reducing carbon footprint) as key parameter, they then cross-checked this with origin of reports (country, climate region), building type, and implementation thoroughness. This allowed the authors to identify not only the best approach, but also understand the impact of these other factors on the reported success rate. Retrofitting was implemented the most (58%) but with varying success (2% to 49% reductions), this variation is attributed to the current state of the buildings and the level/method of retrofitting applied. LCB showed the highest reductions as energy saving measures were preplanned before building construction, this however limits LCB to new and planned buildings. Even though EMS showed results comparable to Retrofitting and required a fraction of the costs/effort, only 14% implemented it, this is an indication of the level of social awareness in the region on the need to reduce carbon footprint and its impact on the world’s climate.

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Hydraulic systems used for pitch control of wind turbines: a literature overview

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IOP Conference Series: Materials Science and engineering 2018年第4期444卷

作者： R I Pelin P D Bârsănescu I Tiţa 'Gheorghe Asachi' Technical University of Iasi Iasi Romania Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania Fluid Mechanics Fluid Machines and Fluid Power Systems Department 'Gheorghe Asachi' Technical University from Iasi Romania

This paper contains an analysis of some researches regarding hydraulic systems used for pitch control of wind turbines. As is already known pitch control is important for the aerodynamic efficiency of wind turbine influencing the energy capture, pitch angle being an important parameter by its influence on the angle of attack of the wind. This kind of control is also important in order to protect the turbine in the case of high values of the wind speed reducing the extreme loads. In many cases the system used to change pitch is a hydraulic system. Considering the tendencies in using hydraulic systems in wind turbines, some research directions resulted from reviewed scientific articles. In the case of high-power wind turbines, the load on the blade being important, the rotation of the blades around their own axes in order to change the pitch angle supposes great acting forces. Hydraulic systems provide them in reduce size equipment. The blade rotation may be controlled simultaneously, in the case of collective pitch control, or separately for each one of the blades, in the case of individual control of the blades.

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Correction: Electrocoalescence of paired droplets encapsulated in double-emulsion drops

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Lab on a chip 2016年第22期16卷 4466页

作者： Yankai Jia Yukun Ren Weiyu Liu Likai Hou Ye Tao Qingming Hu Hongyuan Jiang School of Mechatronics Engineering Harbin Institute of Technology West Da-zhi Street 92 Harbin Heilongjiang 150001 PR China. rykhit@***. School of Mechatronics Engineering Harbin Institute of Technology West Da-zhi Street 92 Harbin Heilongjiang 150001 PR China. rykhit@*** and State Key Laboratory of Robotics and System Harbin Institute of Technology West Da-zhi Street 92 Harbin Heilongjiang 150001 PR China. jhy_hit@***.

Correction for 'Electrocoalescence of paired droplets encapsulated in double-emulsion drops' by Yankan Jia et al., Lab Chip, 2016, DOI: .

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Online support for research activities by high school and junior high school students 38

Online support for research activities by high school and ju...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Enomoto, H. Abe, H. Hoashi, R. Kimura, M. Kita, R. Kobayashi, N. Kono, R. Kumagai, K. Maruta, K. Nakagawa, R. Nose, C. Saito, R.J. Sasaki, M. Takanashi, M. Tanaka, K.S. Accel Kitchen LLC 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tokyo Institute of Technology Department of Earth and Planetary Science 2-12-1 Ookayama Meguro-ku Tokyo Japan Tohoku University Department of Mechanical and Aerospace Engineering 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tohoku University Department of Earth Science 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tokyo Denki University Department of Robotics and Mechatronics 5 Senju Asahi-cho Adachi-ku Tokyo Japan University of Tokyo Natural Sciences I 3-8-1 Komaba Meguro-ku Tokyo Japan Tohoku University Department of Quantum Science and Energy Engineering 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tohoku University Department of Chemistry 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tohoku University Planetary Plasma and Atmospheric Research Center 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tohoku University Department of Physics 6-3 Aramaki Aza-Aoba Aoba-ku Sendai Japan Tohoku University Department of Health Sciences 2-1 Seiryo-machi Aoba-ku Miyagi Sendai Japan 1-5-1 Chofugaoka Chofu Tokyo Japan Waseda University Faculty of Science and Engineering 3-4-1 Okubo Shinjuku-ku Tokyo Japan

Accel Kitchen LLC has launched Japan largest cosmic-ray outreach network providing handy cosmic-ray detectors to more than 100 high school and junior high school students and supporting their research activities remotely with online communication tools. There are over 30 various and unique research topics conducted by students e.g. measurement of the cosmic-ray flux at Japan’s highest mountain Mt. Fuji to investigate the relationship with altitude, comparison of cosmic-ray flux with sunspot counts observed by the school’s telescope, collaboration with students in Argentina to compare the cosmic-ray flux between Japan and Argentina to observe the effect of the South Atlantic Anomaly. Online research support by undergraduate and graduate students enables them to conduct scientific research and some of their progress has been published in peer-review *** this presentation, we will introduce their research activities. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Cosmic ray detectors

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