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Progress in R&D of coated conductor in M-PACC project
Izumi, T.,Ibi, A.,Nakaoka, K.,Taneda, T.,Yoshida, T.,Takagi, Y.,Nakamura, T.,Machi, T.,Katayama, K.,Sakai, N.,Yoshizumi, M.,Koizumi, T.,Kimura, K.,Kato, T.,Kiss, T.,Shiohara, Y. The Korea Institute of Applied Superconductivity a 2014 한국초전도저온공학회논문지 Vol.16 No.2
The five-year national project in Japan for R&D of coated conductors and applications, named as the Materials and Power Applications of Coated Conductors (M-PACC) project, was finished at the end of FY2013. The project consists of four sub-themes as cable, transformer, SMES and coated conductors. In the theme of coated conductors, the fabrication process had been developed to satisfy the requirements from the applications such as in-field $I_c$ performance, low AC loss in the long tapes etc. Through the project, the remarkable progress was achieved as follows; a high in-field minimum $I_c$ value over 54A/cm-width under 3T at 77K was realized in a 200m long EuBCO tape with artificial pinning centers of $BaHfO_3$ by the pulsed laser deposition (PLD) technique on the IBAD template. On the other hand, the AC loss reduction was confirmed in the tapes fabricated by both PLD and the metal organic deposition (MOD) techniques by scribing 100m tapes into 10-filamments. Additionally, the mechanism of the delamination phenomenon was systematically investigated and the strength was improved by eliminating the origins of the weak points in the films. Through the development, all targeted goals were accomplished and the several results were appreciated as a world champion data.
Lee, Sang-Mog,Lee, Won-Chang,Sakai, Takeo,Hamakawa, Masaaki,Yoon, Chong-sam,Masuda, Testuya 건국대학교 동물자원연구센터 1991 動物資源硏究誌 Vol.16 No.-
Actinobacillus Pleuropneumonia(AP)에 感染된 豚에게 doxycycline hydrochloride(DOXY)와 thiamphenicol(TP)를 각각 100ppm에서 200ppm씩 食餌에 첨가하여 7일간 投與한 결과에서는 기침(咳)과 鼻漏의 치료효과가 관찰되었으며, 17일 후에서는 體重의 증가와 辭料攝取率이 向上되었고, 部檢上 肺藏에 病變이 없었으며, 겸하여 DOXY의 100ppm과 200ppm 投與群에서는 肺臟에서 Actinobacillus Pleuropneumonia와 KPasteurella multocida가 분리되지 않았다. In order to an experimental find out on the antimicrobial efficacy of doxycycline hydrochloride(DOXY) and thiamphenicol(TP) were given to pigs infected with Actinnobacillus pleuropneumonia(AP) for 7 days. Clinical therapeutic efficacy on coughing and rhinorrhea was observed with 100ppm to 200ppm in the diet. Weight gain and food consumption were improved and pulmonary lesions were not observed at necropsy in the 100 ppm or 200 ppm groups on day 17. In addition, neither Ap nor Pasteurella multocida(Pm) was isolated from the lungs of pigs in the 100 ppm or 200 ppm DOXY on day 17. Key word: antimicrobial efficacy of DOXY and TP.
( M Hakoda ),( K Aburai ),( K Tanaka ),( K Sakai ),( H Sakai ),( M Abe ),( S Hashimoto ),( K Sakamoto ) 한국피부장벽학회 2013 한국피부장벽학회지 Vol.15 No.2
Stratum Corneum Intercellular Lipid (SCL) plays a key role for the skin barrier function and investigation of its structure and function is crucial for the development of effective trans-dermal delivery of drugs and functional cosmetics. Primary constituents of SCL are simple equi-molar mixture of ceramides, fatty acids and cholesterol, though there are multiple varieties of ceramides, fatty acids involved. In order to avoid such complexity of components, there are several model SCLs proposed to investigate the mechanism of percutaneous penetration. Even though, development of simple but relevant model with structural and functional resemblance to the real SCL is still of great importance for the advancement of skin barrier research. Here we propose novel and simple method to prepare model SCL useful to investigate how materials or formulations are interact with skin. After screening of various ceramides and fatty acids with cholesterol, we have chosen equi-molar combination of ceramide3 with oleoyl group, stearic acid and cholesterol as a model SCL. To be an appropriate model to study barrier function, structural uniformity of lamellar layers in the sample is indispensable. After various trials to prepare layered SCL structures including traditional Bangham method for the liposome preparation, we have established novel method for the preparation of model SCL. That is simply to mix three components to melt at 120 °C as clear solution. After quenching to 80 °C, acetate buffer with pH 5.5 is added to be 20 wt% hydrated SCL which is a normal water content as natural stratum corneum (SC). Despite of such a simple preparation method, resulted sample showed highly desirable properties as a model SCL, namely structural characteristics similar to SC by SAXS and DSC analysis and uniformly layered lamellar structure by EM observation. By using this model, interaction and translocation of model SCL to or through SC can be analyzed.
$C_{x}F_{y}$ Polymer Film Deposition in rf and dc $C_{7}F_{16}$ Vapor Plasmas
Sakai, Y.,Akazawa, M.,Sakai, Yosuke,Sugawara, H.,Tabata, M.,Lungu, C.P.,Lungu, A.M. The Korean Institute of Electrical and Electronic 2001 Transactions on Electrical and Electronic Material Vol.2 No.1
$C_{x}F_{y}$ polymer film was deposited in rf and dc Fluorinert vapor ($C_{7}F_{16}$) plasmas. In the plasma phase, the spatial distribution of optical emission spectra and the temporal concentration of decomposed species were monitored, and kinetics of the $C_{7}F_{16}$ decomposition process was discussed. Deposition of $C_{x}F_{y}$ film has been tried on substrates of stainless steel, glass, molybdenum and silicon wafers at room temperature in the vapor pressures of 40 and 100 Pa. The films deposited in the rf plasma showed excellent electrical properties as an insulator for multi-layered interconnection of deep-submicron LSI, i.e. the low dielectric constant ∼2.0, the dielectric strength ∼2 MV/cm and the high deposition rate ∼100nm/min at 100W input power.
Near Net Shape Processing of RE-Ba-Cu-O Bulk Superconductors
Murakami M.,Fujishiro M.,Miyazaki T.,Nariki S.,Sakai N.,Hirabayashi I. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
Several practical applications of melt-textured bulk superconductors require the complex-shaped products such as curved, ring-shaped, and drilled blocks rather than simple shaped pellets. However, melt-textured bulk superconductors are often damaged when they are cut, grinded, or drilled. With the aim of reducing such damages, we have investigated the preparation of the complex-shaped bulk superconductors by previously machining binder-added precursors and pre-sintered precursors. We could produce various complex-shaped bulk superconductors without cracking from these machined precursors
An Experimental Analysis and Expertise for a Fish-Drying Process Control
Y.Sakai,M.Nakamura,T.Shiragami,M.K?chi 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
Analysis is made for a fish-drying process control in order to implement a human expertize into an automated fish drying system. Together with the idea described in the companion paper, a methodology is found effective in a general drying system other than fish drying.