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Improvement in the Super Low Core-loss Soft Magnetic Materials
Maeda Toru,Sato Atsushi,Mochida Yasushi,Toyoda Haruhisa,Mimura Koji,Nishioka Takao 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
We reported a P/M soft magnetic material with core loss value of , which is lower than that of 0.35mm-thick laminated material, by using high purity gas-atomized iron powder. Lack of mechanical strength and high cost of powder production are significant issues for industrial use. In order to achieve both low core loss and high strength by using inexpencive powder, the improvement of powder shape and surface morphology and binder strength was conducted. As the result, the material based on water-atomized powder with 80 MPa of TRS and 108 W/kg of core loss (W10/1k) was achieved.
The Development of the Totalized Hydrogen Energy Utilization System for Commercial Buildings
Maeda, Tetsuhiko,Nakano, Akihiro,Ito, Hiroshi,Tange, Manabu,Kawakami, Yoshiaki,Kato, Atsushi,Masuda, Masao The Korean Institute of Electrical Engineers 2011 The Journal of International Council on Electrical Vol.1 No.2
We have proposed the Totalized Hydrogen Energy Utilization System(THEUS) for applying to commercial buildings. THEUS consists of fuel cells, water electrolyzers, metal hydride tanks and their auxiliaries. We evaluated the energy saving of the basic THEUS in view of an actual operation using thermal demand data of actual buildings. The THEUS have ability for achieving energy saving, in comparison with an ice storage system for cooling demand. We have developed the hydrogen storage system using metal hydride and unitized reversible cell (URC) combine the functionality of a fuel cell and an electrolyzer in a single device, these are important components of THEUS. The metal hydride tank designed and manufactured to evaluate that we assumed actual operation in the experiments. We developed the numerical simulation code, and simulation results are in good agreement with experimental data. The simulation about two tanks system was done by using this code. The heat utilization can be improved greatly. To achieve URC commercial use, improvement of durability was examined. It confirmed that our URC had durability for several thousand hours.
Yamauchi, Toshimasa,Hara, Kazuo,Maeda, Shiro,Yasuda, Kazuki,Takahashi, Atsushi,Horikoshi, Momoko,Nakamura, Masahiro,Fujita, Hayato,Grarup, Niels,Cauchi, Stephane,Ng, Daniel P K,Ma, Ronald C W,Tsunoda, Nature Publishing Group, a division of Macmillan P 2010 Nature genetics Vol.42 No.10
We conducted a genome-wide association study of type 2 diabetes (T2D) using 459,359 SNPs in a Japanese population with a three-stage study design (stage 1, 4,470 cases and 3,071 controls; stage 2, 2,886 cases and 3,087 controls; stage 3, 3,622 cases and 2,356 controls). We identified new associations in UBE2E2 on chromosome 3 and in C2CD4A-C2CD4B on chromosome 15 at genome-wide significant levels (rs7612463 in UBE2E2, combined P = 2.27 ? 10<SUP>??9</SUP>; rs7172432 in C2CD4A-C2CD4B, combined P = 3.66 ? 10<SUP>??9</SUP>). The association of these two loci with T2D was replicated in other east Asian populations. In the European populations, the C2CD4A-C2CD4B locus was significantly associated with T2D, and a combined analysis of all populations gave P = 8.78 ? 10<SUP>??14</SUP>, whereas the UBE2E2 locus did not show association to T2D. In conclusion, we identified two new loci at UBE2E2 and C2CD4A-C2CD4B associated with susceptibility to T2D.
Hwang, Chul-Min,Ishida, Masayoshi,Ito, Hiroshi,Maeda, Tetsuhiko,Nakano, Akihiro,Kato, Atsushi,Yoshida, Tetsuya The Korean Institute of Electrical Engineers 2012 The Journal of International Council on Electrical Vol.2 No.2
Polymer electrolyte-based unitized reversible fuel cells (URFCs) combine the functionality of a fuel cell and an electrolyzer in a single device. In this study, the influence of hydrophobic agent in the gas diffusion layer (GDL) of URFC was investigated. The titanium (Ti)-felt GDL which treated with different percent of PTFE emulsion was intensively tested with various humidification temperature conditions in the single cell of URFC. I-V performance curves and divided three overpotentials were compared and analyzed in the fuel cell mode. The electrolyzer performances were also evaluated with the I-V curves. Experimental results showed that the GDLs with high PTFE contents have better performance in the dry conditions. On the other hand, the increased PTFE contents accelerate flooding problem in the wet condition and it is related with rising concentration overpotential. The electrolyzer performances are almost same with different PTFE contents of GDL.
Biological Effects of Extract from the Mixed Tea (Komori Kan Gen Cha)
Takeo Hasegawa,Yeunhwa Gu,Katuyuki Miyata,Kayoko Maeda,Atsushi Fukuyama,Satoshi Ando,Morikazu Amano,Tomoaki Suzuki,Kousuke Murabayashi,Kazushi Ida,Ohno Yukiko,Hitomi Kitaoka,Michihiro Kureki,Toshifum 한국방사성폐기물학회 2004 한국방사성폐기물학회 학술논문요약집 Vol.2 No.2
Induction of allergic contact dermatitis by astigmatid mite-derived monoterpene, α-acaridial
Toshio Sasai,Yunosuke Hirano,Sayaka Maeda,Isamu Matsunaga,Atsushi Otsuka,Daisuke Morita,Ritsuo Nishida,Hideo Nakayama,Yasumasa Kuwahara,Masahiko Sugita,Naoki Mori 한국응용곤충학회 2008 한국응용곤충학회 학술대회논문집 Vol.2008 No.10
α-Acaridial [2(E)-(4-methyl-3-pentenyl)butenedial] is a novel monoterpene secreted from the house dust mites. Because of its molecular nature of a highly reactive, small lipidic compound, we addressed whether α-acaridial might function as a haptenic allergen that induced allergic contact dermatitis. Mice sensitized with α-acaridial were challenged by the same antigen on the ear skin. After 2 days, significant ear swelling with a prominent infiltration of CD4+ T lymphocytes was observed. In vitro, α-acaridial exhibited an outstanding ability to quickly interact with and chemically modify a reference protein. Virtually all cysteine residues and a sizable fraction of lysine residues were found to be selectively modified, suggesting that α-acaridial could potentially interact with any proteins. Previously, numerous mite-derived proteinaceous allergens have been associated with contact dermatitis. Our study now emphasizes that small lipidic compounds released from mites comprise a new class of mite allergens, and therefore, is of significant medical implications.
The Enhancement of Immunological Activity by Mild Hypothermia
Takeo Hasegawa,Yeunhwa Gu,Katuyuki Miyata,Kayoko Maeda,Atsushi Fukuyama,Satoshi Ando,Morikazu Amano,Tomoaki Suzuki,Kousuke Murabayashi,Kazushi Ida,Ohno Yukiko,Hitomi Kitaoka,Michihiro Kureki,Toshifumi 한국방사성폐기물학회 2004 한국방사성폐기물학회 학술논문요약집 Vol.2 No.2