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Effect of Additive Elements on Electrochemical Behavior of Passive Films on Fe-18Cr Alloy
Fujimoto, S.,Umemura, H.,Kurihara, M.,Tsuchiya, H.,Shibata, T. 한국부식방식학회 2002 Corrosion Science and Technology Vol.31 No.1
Electrochemical behaviour of Fe-18Cr-X (X: Al, Si, Ti, Mn, Ni, Cu, Zr, Nb, Mo, and W, 0.5-4 at.%) alloy thin films deposited on Si wafer by ion beam sputtering technique was examined in order to discuss the effect of alloying elements which are completely dissolved in the alloy. Polarisation curves measured in 0.1 krnol m" H2S04 revealed that active dissolution was suppressed by Ni, Nb, Mo, Cu and Ti, but was almost not affected by Al, Si, Mn. Pitting corrosion resistance in acid chloride solutions was extremely improved by Nb, Mo, Ti. On the other hand, Al, Si, Mn exhibited almost no change in pitting potential. Reactivation in sulphuric acid was suppressed by Mo, Nb, Ni, Ti, but not affected or slightly enhanced by Si and Mn. It is noticeable that addition of Nb is especially beneficial for preventing both pitting corrosion and reactivation. The corrosion behaviour of Fe-Cr alloys are discussed in terms of the stability of passive film which is influenced by minute additives incorporated in the film.
Choi, M.,Kadara, H.,Zhang, J.,Parra, E.R.,Rodriguez-Canales, J.,Gaffney, S.G.,Zhao, Z.,Behrens, C.,Fujimoto, J.,Chow, C.,Kim, K.,Kalhor, N.,Moran, C.,Rimm, D.,Swisher, S.,Gibbons, D.L.,Heymach, J.,Kaf Elsevier 2017 Annals of oncology Vol.28 No.1
<P>Conclusion(s): Our findings pinpoint mutated genes that may impact clinical outcome as well as personalized strategies for targeted immunotherapies in early-stage LUSC.</P>
Kadara, H,Choi, M,Zhang, J.,Parra, E.R.,Rodriguez-Canales, J.,Gaffney, S.G.,Zhao, Z.,Behrens, C.,Fujimoto, J.,Chow, C.,Yoo, Y.,Kalhor, N.,Moran, C.,Rimm, D.,Swisher, S.,Gibbons, D.L.,Heymach, J.,Kafta Elsevier 2017 ANNALS OF ONCOLOGY Vol.28 No.1
<P>Conclusion(s): Our study highlights molecular and immune phenotypes that warrant further analysis for their roles in clinical outcomes and personalized immune-based therapy of LUAD.</P>
Mechatronics Education Using Robot Competition in Okayama University of Science
T. Akagi,S. Fujimoto,H. Kuno,K. Araki,S. Yamada,S. Dohta 한국공학교육학회 2010 공학교육연구 Vol.13 No.2
Electronics machines make daily human life more convenient and comfortable and try to ease burdens. When designing and manufacturing such mechatronic systems, the engineers need to have a wide range of knowledge. The purpose of our education is for students to learn to use mechatronic techniques. To realize our goal, we regard “an interest in creation” of our student as an important educational method. In this paper, we propose and try an educational method for mechatronics creation using “their interest”. The method is to hold robot competitions between 1st and 3rd year students as a regular curriculum. In order to confirm the progress of our students in our engineering course, in the last year, some students entered the Rescue Robot Contest held in Kobe Japan. As a result, our student team got second place, a great honor considering it was our first attempt. We confirm that the robot competition is a useful method to make students study by themselves.
Status of JENDL High Energy File
Y. Watanabe,K. Kosako,S. Kunieda,S. Chiba,R. Fujimoto,H. Harada,M. Kawai,F. Maekawa,T. Murata,H. Nakashima,K. Niita,N. Shigyo,S. Shimakawa,N. Yamano,T. Fukahori 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The present status of the JENDL high-energy file is reported. The recent version (referred to as JENDL/HE-2007) contains neutron and proton cross section data for energies up to 3 GeV for 107 nuclides over the wide mass range from H to Am. The newly evaluated data for 41 nuclides have been added to the first version (JENDL/HE-2004) along with some revisions. The JENDL/HE-2007 includes neutron total cross sections, nucleon elastic scattering cross sections and angular distributions, nonelastic cross sections, production cross sections and double-differential cross sections of secondary light particles (n, p, d, t, ^3He, α, and π) and gamma-rays, isotope production cross sections, and fission cross sections in the ENDF-6 format. The evaluations were performed on the basis of experimental data, nuclear model calculations, and systematics based on measurements. The evaluated cross sections are compared with available experimental data and the other evaluations. Some results of benchmark tests with MCNPX codes are shown.
남강현,S. OH,H. FUJIMOTO,Y. HORI 한국자동차공학회 2012 International journal of automotive technology Vol.13 No.7
A robust yaw stability control design based on active front steering control is proposed for in-wheel-motored electric vehicles with a Steer-by-Wire (SbW) system. The proposed control system consists of an inner-loop controller (referred to in this paper as the steering angle-disturbance observer (SA-DOB), which rejects an input steering disturbance by feeding a compensation steering angle) and an outer-loop tracking controller (i.e., a PI-type tracking controller) to achieve control performance and stability. Because the model uncertainties, which include unmodeled high frequency dynamics and parameter variations, occur in a wide range of driving situations, a robust control design method is applied to the control system to simultaneously guarantee robust stability and robust performance of the control system. The proposed control algorithm was implemented in a CaSim model, which was designed to describe actual in-wheel-motored electric vehicles. The control performances of the proposed yaw stability control system are verified through computer simulations and experimental results using an experimental electric vehicle.
K. Nam,S. Oh,H. Fujimoto,Y. Hori 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper presents roll stability control methodology for future personal electric vehicles with 4 wheel steering system and lateral force sensors. Direct roll moment control is realized by 4 wheel steering control based on lateral tire force control. In this paper, the lateral tire force, obtained from novel lateral force sensors, was utilized to estimate a roll angle and to control the vehicle roll motion. In order to estimate roll angle, a linear observer was proposed and implemented in an experimental electric vehicle. The effectiveness of a proposed roll angle observer was verified through field tests. By using an estimated roll angle, a direct roll moment controller for roll stability was designed based on general two-degree-of?freedom (2-DOF) control methodology. Effectiveness of a proposed roll stability control method was verified through computer simulation using CarSim software.
T. Sakurai,K. Fujimoto,S. Okubo,H. Ohta,Y. Uwatoko 한국자기학회 2013 Journal of Magnetics Vol.18 No.2
We have developed a high-field and high-frequency ESR system using a commercially available magnetometer equipped with the superconducting quantum interference device (SQUID). This is magnetization detection type ESR and ESR is observed as a change of the magnetization at the resonance condition under irradiation of the electromagnetic wave. The frequency range is from 70 to 315 GHz and the maximum magnetic field is 5 T. The sensitivity is estimated to be 10<SUP>13</SUP> spins/G. The advantage of this system is that the high-field ESR measurements can be made very easily and quantitatively. Moreover, this high-field ESR can be applied to the measurements under pressure by using a widely used piston-cylinder pressure cell.
T. Minegishi,Z. Vashaei,G. Fujimoto,H. Suzuki,K. Sumitani,M. Cho,M. Suemitsu,O. Sakata,S. Tokairin,T. Yao,Y. Narita 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.3
We studied ZnO growth on 3C-SiC(001)/Si(001) templates. In-situ reflection high- energy electron diffraction (RHEED) observations implied that ZnO grown on 3C-SiC(001) had a critical thickness (50 nm). From a structural characterization by using X-ray diffraction, we revealed that ZnO films thinner than the critical thickness grown on 3C-SiC(001) had a [10-11] orientation with 4-fold in-plane symmetry. On the other hand, ZnO films thicker than the critical thickness consisted of [10-11] and [0001] orientations. Also, the portion of [0001] oriented ZnO increased with the layer thickness. Possible interface configurations of ZnO(10-11)/3C-SiC(001) and ZnO(0001)/ZnO(10-11) are suggested.