{"title":"The Project for Productization of Superconducting Wire with Very Small Diameter Meiko Futaba Co., Ltd. & YUKI Precision Co., Ltd.","authors":"Masaru Masaru, J. Nagamatsu","doi":"10.2221/jcsj.55.287","DOIUrl":"https://doi.org/10.2221/jcsj.55.287","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"287-288"},"PeriodicalIF":0.0,"publicationDate":"2020-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46036375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Feature: Technologies to Obtain Superconducting Joints or Low-resistant Joints that Promote the Widespread Use of High-temperature Superconducting Wires","authors":"H. Yamasaki, S. Awaji","doi":"10.2221/jcsj.55.254","DOIUrl":"https://doi.org/10.2221/jcsj.55.254","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"254-254"},"PeriodicalIF":0.0,"publicationDate":"2020-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44246607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ohki Kotaro, T. Nagaishi, T. Kato, Y. Yanagisawa, M. Hamada
{"title":"Superconducting Joining Method between REBCO Coated Conductors","authors":"Ohki Kotaro, T. Nagaishi, T. Kato, Y. Yanagisawa, M. Hamada","doi":"10.2221/jcsj.55.262","DOIUrl":"https://doi.org/10.2221/jcsj.55.262","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"262-267"},"PeriodicalIF":0.0,"publicationDate":"2020-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43446739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Synopsis: Three kinds of magnetic separation technique utilized to recycle nickel from the waste fluid of electroless plating processes are introduced in the article, with reference made to HTS bulk magnet systems activated by pulsed-field magnetization and field cooling methods. Actual magnetic separation experiments were conducted using Ni-based coprecipitated slurry, thermally-docomposed Ni-P metallic particles, and coarse NiSO4 crystals in the regenerated fluid from Nickel phosphite slurry, which were all processed from the Ni-plating waste. Through the investigations, the author refers to the feasibility of practical recycling of Ni as a rare metal with the use of HTS bulk magnets generating intense magnetic fields of 2-4 T.
{"title":"Resource Recovery from Nickel-plating Waste Fluid Using Intense Magnetic Field of Superconducting Bulk Magnet","authors":"T. Oka","doi":"10.2221/jcsj.55.164","DOIUrl":"https://doi.org/10.2221/jcsj.55.164","url":null,"abstract":"Synopsis: Three kinds of magnetic separation technique utilized to recycle nickel from the waste fluid of electroless plating processes are introduced in the article, with reference made to HTS bulk magnet systems activated by pulsed-field magnetization and field cooling methods. Actual magnetic separation experiments were conducted using Ni-based coprecipitated slurry, thermally-docomposed Ni-P metallic particles, and coarse NiSO4 crystals in the regenerated fluid from Nickel phosphite slurry, which were all processed from the Ni-plating waste. Through the investigations, the author refers to the feasibility of practical recycling of Ni as a rare metal with the use of HTS bulk magnets generating intense magnetic fields of 2-4 T.","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"164-171"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49531283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"研究論文「振動磁場中の超電導線の有効抵抗 第1 部 単芯複合超電導線」小笠原武","authors":"一弘 柁川","doi":"10.2221/jcsj.55.209","DOIUrl":"https://doi.org/10.2221/jcsj.55.209","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"209-210"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42647515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Current State of Magnetic Separation Using Superconductor Technology and Effort for Industrialization","authors":"J. Ogawa","doi":"10.2221/jcsj.55.148","DOIUrl":"https://doi.org/10.2221/jcsj.55.148","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"148-148"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41934082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"変化に適応する力－adaptability to change","authors":"M. Murakami","doi":"10.2221/jcsj.55.147","DOIUrl":"https://doi.org/10.2221/jcsj.55.147","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"147-147"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46686110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"“Research Unit on Extremely Energy-Efficient processor,” Institute of Advanced Sciences/“Yoshikawa & Yamanashi Laboratory,” Graduate School of Engineering Science, Yokohama National University","authors":"N. Yoshikawa","doi":"10.2221/jcsj.55.201","DOIUrl":"https://doi.org/10.2221/jcsj.55.201","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"201-202"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47629299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Nagasaki, Gen Kamada, T. Katana, S. Sasaki, D. Miyagi, M. Tsuda
Synopsis: This paper discusses the demonstration of a stable levitation (SL) system for a magnetic levitation type seismic isolation device using a high-temperature superconducting (HTS) bulk. The SL system utilizes a restoring force between an HTS bulk and permanent magnet (PM) to maintain the stable levitation of a base-isolation object. We first measured the restoring force between the HTS bulk and PM, and then demonstrated the performance of the SL system using a magnetic levitation type seismic isolation model device with a radial arrangement of HTS bulks and a PM rail. The SL system with the HTS bulk can reduce small vibration and displacement during the normal period of operation without experiencing a large disturbance. We also demonstrated that, when a large disturbance was applied, the transmission of horizontal vibration to the base-isolation object via the SL system was eliminated by decoupling the magnetic coupling between the HTS bulk and PM. Furthermore, the vibration transmissibility at any vibration frequency to the base-isolation object was reduced by incorporating an HTS bulk damper and eddy current damper in the model device. These results suggest that a SL system used together with an HTS bulk can realize both the stable levitation of a base-isolation object during the normal period of operation as well as the elimination of the horizontal vibration transmission when a large vibration is applied.
{"title":"Horizontal Vibration Transmission Characteristics of a Magnetic Levitation Type Seismic Isolation Model Device with Stable Levitation System","authors":"Y. Nagasaki, Gen Kamada, T. Katana, S. Sasaki, D. Miyagi, M. Tsuda","doi":"10.2221/jcsj.55.117","DOIUrl":"https://doi.org/10.2221/jcsj.55.117","url":null,"abstract":"Synopsis: This paper discusses the demonstration of a stable levitation (SL) system for a magnetic levitation type seismic isolation device using a high-temperature superconducting (HTS) bulk. The SL system utilizes a restoring force between an HTS bulk and permanent magnet (PM) to maintain the stable levitation of a base-isolation object. We first measured the restoring force between the HTS bulk and PM, and then demonstrated the performance of the SL system using a magnetic levitation type seismic isolation model device with a radial arrangement of HTS bulks and a PM rail. The SL system with the HTS bulk can reduce small vibration and displacement during the normal period of operation without experiencing a large disturbance. We also demonstrated that, when a large disturbance was applied, the transmission of horizontal vibration to the base-isolation object via the SL system was eliminated by decoupling the magnetic coupling between the HTS bulk and PM. Furthermore, the vibration transmissibility at any vibration frequency to the base-isolation object was reduced by incorporating an HTS bulk damper and eddy current damper in the model device. These results suggest that a SL system used together with an HTS bulk can realize both the stable levitation of a base-isolation object during the normal period of operation as well as the elimination of the horizontal vibration transmission when a large vibration is applied.","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"117-124"},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47922688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diversity of Superfluid Helium Cooling","authors":"Hisayasu Kobayashi","doi":"10.2221/jcsj.55.125","DOIUrl":"https://doi.org/10.2221/jcsj.55.125","url":null,"abstract":"","PeriodicalId":93144,"journal":{"name":"Teion kogaku = Cryogenic engineering : [official journal of the Cryogenic Association of Japan]","volume":"55 1","pages":"125-131"},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44205773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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