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Kobayashi, T.,Ida, K.,Inagaki, S.,Tsuchiya, H.,Tamura, N.,Choe, G.H.,Yun, G.S.,Park, H.K.,Ko, W.H.,Evans, T.E.,Austin, M.E.,Shafer, M.W.,Ono, M.,Ló,pez-bruna, D.,Ochando, M.A.,Estrada, T.,Hidalg IOP 2017 Nuclear fusion. Fusion nucléaire. &n.Illiga Vol.57 No.7
<P>In this contribution we analyze modulation electron cyclotron resonance heating (MECH) experiment and discuss higher harmonic frequency dependence of transport coefficients. We use the bidirectional heat pulse propagation method, in which both inward propagating heat pulse and outward propagating heat pulse are analyzed at a radial range, in order to distinguish frequency dependence of transport coefficients due to hysteresis from that due to other reasons, such as radially dependent transport coefficients, a finite damping term, or boundary effects. The method is applied to MECH experiments performed in various helical and tokamak devices, i.e. Large Helical Device (LHD), TJ-II, Korea Superconducting Tokamak Advanced Research (KSTAR), and Doublet III-D (DIII-D) with different plasma conditions. The frequency dependence of transport coefficients are clearly observed, showing a possibility of existence of transport hysteresis in flux-gradient relation.</P>
Eiteneer, D.,Palsson, G.K.,Nemsak, S.,Gray, A.X.,Kaiser, A.M.,Son, J.,LeBeau, J.,Conti, G.,Greer, A.A.,Keqi, A.,Rattanachata, A.,Saw, A.Y.,Bostwick, A.,Rotenberg, E.,Gullikson, E.M.,Ueda, S.,Kobayashi Elsevier Scientific Pub. Co 2016 Journal of electron spectroscopy and related pheno Vol.211 No.-
LaNiO<SUB>3</SUB> (LNO) is an intriguing member of the rare-earth nickelates in exhibiting a metal-insulator transition for a critical film thickness of about 4 unit cells [Son et al., Appl. Phys. Lett. 96, 062114 (2010)]; however, such thin films also show a transition to a metallic state in superlattices with SrTiO<SUB>3</SUB> (STO) [Son et al., Appl. Phys. Lett. 97, 202109 (2010)]. In order to better understand this transition, we have studied a strained LNO/STO superlattice with 10 repeats of [4 unit-cell LNO/3 unit-cell STO] grown on an (LaAlO<SUB>3</SUB>)<SUB>0.3</SUB>(Sr<SUB>2</SUB>AlTaO<SUB>6</SUB>)<SUB>0.7</SUB> substrate using soft x-ray standing-wave-excited angle-resolved photoemission (SWARPES), together with soft- and hard- x-ray photoemission measurements of core levels and densities-of-states valence spectra. The experimental results are compared with state-of-the-art density functional theory (DFT) calculations of band structures and densities of states. Using core-level rocking curves and x-ray optical modeling to assess the position of the standing wave, SWARPES measurements are carried out for various incidence angles and used to determine interface-specific changes in momentum-resolved electronic structure. We further show that the momentum-resolved behavior of the Ni 3d e<SUB>g</SUB> and t<SUB>2g</SUB> states near the Fermi level, as well as those at the bottom of the valence bands, is very similar to recently published SWARPES results for a related La<SUB>0.7</SUB>Sr<SUB>0.3</SUB>MnO<SUB>3</SUB>/SrTiO<SUB>3</SUB> superlattice that was studied using the same technique (Gray et al., Europhysics Letters 104, 17004 (2013)), which further validates this experimental approach and our conclusions. Our conclusions are also supported in several ways by comparison to DFT calculations for the parent materials and the superlattice, including layer-resolved density-of-states results.
Satoshi KOBAYASHI, Ph.D. 한국환경생태학회 2014 한국환경생태학회 학술대회지 Vol.2014 No.1
The Ramsar Convention on Wetlands has so far two significant COPs in Asia: COP5 in Kushiro, Japan in 1993 and COP10 in Changwon, South Korea, in 2008. The Convention itself is an intergovernmental mechanism. However, the mission of the Convention – conservation of wetlands and wetland resources – can only be achieved by participation of local municipalities and people. Besides, the Ramsar Convention has another unique aspect compared with other biodiversity-related treaties/conventions: it is created by NGOs and still located within an international NGO, namely IUCN. Therefore, it is crucial for wetland conservation to promote partnerships between the central government and local government as well as among people, NGOs and private sectors. Experiences of the Ramsar Kushiro Conference tell us that two factors are important to make real local participation possible: 1) CEPA; and 2) sense of meaningfulness. If you don’t know the purpose of the Convention and the COP, you are hardly interested in its preparation. So somebody should prepare some handy promotional kits for people to understand the purpose of conservation. We compiled various materials, requested experts/scientists to deliver lectures for teachers, taxi drivers, restaurants owners and waiters, hotel receptionists and kids. If possible, it is desirable to have a series of articles on local and national newspapers. You did attend the Conference, but once it’s over you tend to forget everything? If you feel you did contribute to something meaningful, you would like to continue doing something for it. In case of Kushiro City, it established the Kushiro International Wetland Center in early 1995. KIWC functions as a network of various wetland centers in the Kushiro region. JICA (Japan International Cooperation Agency) and KIWC have organized many international training courses not only for wetland managers but also for other conservation-related personnel. JICA has signed an MoU with the Ramsar Secretariat, and KIWC will host the EAAFP (East Asia - Australasian Flyway Partnership) meeting early next year. These efforts have been carried out for twenty years and will continue for future generations.
Kumar, G.,Sivagurunathan, P.,Thi, N.B.D.,Zhen, G.,Kobayashi, T.,Kim, S.H.,Xu, K. Pergamon Press 2016 International journal of hydrogen energy Vol.41 No.46
<P>This study investigated the effects of pretreatment methods (such as autoclave, ultra-sonication and electrolysis) of mixed microalgae consortia (predominantly composed of Scenedesmus followed by Chlorella species) from natural ecological niche. In addition, the cultivated biomass (wet) was subsequently utilized for fermentative H-2 production in mesophilic regime. The results showed that peak hydrogen production rate (HPR) and hydrogen yield (HY) were achieved from electrolysis pretreated algal consortia as 236 +/- 14 mL/L-d and 37.7 +/- 0.4 mL/g (volatile solids) VSadded, whereas the untreated algal consortia resulted in the turnout as 64 +/- 5 mL/L-d and 9.5 +/- 0.0 mL/g VSadded, respectively. The significant increment observed in HPR and HY values were nearly 4 times higher. The solubilization of organic matter during the pretreatment showed positive correlation with the H-2 production. The energy generation rate and yield of the corresponding pretreatment methods were as follows, 1.44, 1.79 and 2.65 kJ/L-d for autoclave, ultra-sonication and electrolysis, the corresponding yields also fell in the range of 0.32, 0.41 and 0.43 kJ/g VSadded, respectively. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.</P>