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MAGNETIC PROPERTIES OF REPb₂(RE : LIGHT RARE - EARTH ELEMENT) COMPOUNDS
Y. Hattori,R. Sugioka,K. Fukamichi,K. Suzuki,T. Goto 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
Systematic studies on the crystal structure and magnetic properties of light rare earth element(RE) compounds with Pb, REPb₂, have been carried out. Their crystal structure has been identified to be a MoSi₂type. The values of the effective magnetic moment for CePb₂ PrPb₂ and NdPb₂ are respectively very close to the theoretical values of RE³+. These three compounds are antiferromagnetic and exhibit a metamagnetic transition. The magnitude of the Neel temperature is proportional to two-thirds of the de Gennes factor. The magnetic entropy change for NdPb₂ is contrast to the value for CePb₂ heavy-fermion compound, comparable to the theoretical value. The magnetic contribution to the temperature dependence of resistivity for PrPb₂ is given by a form of -lnT in a wide temperature range, implying the Kondo system in analogy with CePb₂.
Y. Inoue,Y. Kuramoto,M. Kimura,M. Hattori,M. Adachi,T. Akahane 한국정보디스플레이학회 2011 Journal of information display Vol.12 No.3
Alignment failure sometimes occurs during the rubbing process because the rubbing cloth comes in direct contacts with the surface of the alignment film. A number of researches observed and evaluated the surface of the alignment film after the rubbing process had been reported. The real-time rubbing process has not been observed directly yet, though. In this study, the movement of the piles of the rubbing cloth during the rubbing process was observed with a high-speed camera. Furthermore,the relationship between the rubbing scratch on the alignment films and the movement of the pile was investigated. It was found that the movement of the pile affected the rubbing scratches.
Inoue, Y.,Kuramoto, Y.,Hattori, M.,Adachi, M.,Kimura, M.,Akahane, T. The Korean Infomation Display Society 2011 Journal of information display Vol.12 No.3
Alignment failure sometimes occurs during the rubbing process because the rubbing cloth comes in direct contacts with the surface of the alignment film. A number of researches observed and evaluated the surface of the alignment film after the rubbing process had been reported. The real-time rubbing process has not been observed directly yet, though. In this study, the movement of the piles of the rubbing cloth during the rubbing process was observed with a high-speed camera. Furthermore, the relationship between the rubbing scratch on the alignment films and the movement of the pile was investigated. It was found that the movement of the pile affected the rubbing scratches.
Participation of Protein Synthesis in in vitro Oocyte Maturation and Fertilization in Cattle
Nakaya, Y.,Hattori, M.,Fujihara, N. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.6
Bovine oocytes with compact and complete cumulus cells were cultured for up to 24h in TCM199 buffered with 25mmol/l hepes and supplemented with 10% FBS (fetal bovine serum), 1mg/ml $17{\beta}$-estradiol, 20IU/ml hCG(human chorionic gonadotropin). All of the oocytes were divided into at 6 groups depending upon incubation times (control, 0 hour, 6 hours, 12 hours, 16 hours, 18 hours). To all experimental media, $200{\mu}g/ml$ puromycin was added at different incubation times mentioned above. Following these culture times, in vitro insemination was conducted with frozen-thawed bovine spermatozoa in medium BO (Brackett and Oliphant medium for in vitro insemination) with $10{\mu}g/ml$ BSA(bovine serum albumin) and 10 mg/ml heparin added. After 22h culture, the oocytes were fixed with acetic alcohol solution and stained with orcein acetic solution to evaluate sperm nuclear progression. Addition of puromycin after 0, 6 and 12 h of culture resulted in near of oocyte maturation at the M1 stage. Contrariwise, puromycin addition after 12 h of culture led to restoration of nuclear progression to M2 stage. On the one hand, puromycin affected the synthesis of Cyclin B protein that may be involved in the oocyte maturation and sperm capacitation for in vitro fertilization. The present study suggests the participation of protein synthesis, cyclin B, in the oocyte development from M1 to M2 stages in vitro.
E.Hiraki,H.Hattori,M.Nakaoka,T.Horiuchi,Y.Sugawara 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-
This paper presents performance and loss analysis of Auxiliary Resonant Commutation Snubber-linked (ARCS) three phase voltage source soft switching inverter which is operated under a condition of Zero Voltage Switching (ZVS). The system performances of this ARCS soft switching inverter which is controlled on optimal type I digital servo scheme are illustrated and evaluated on the basis of experimental results.<br/>