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- 저자 : Kentaro Hori (검색결과 4 건)
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Kenji Horie,Yukiyasu Tsutsumi,Hyeoncheol Kim,Moonsup Cho,Hiroshi Hidaka,Kentaro Terada 한국지질과학협의회 2009 Geosciences Journal Vol.13 No.3
Zircon U–Pb geochronology was applied to a migmatitic gneiss in the Busan gneiss complex, Gyeonggi massif, Korea. 207Pb/206Pb ages of concordant zircon grains reveal that overgrowth rims with Th/U ratios lower than 0.1 formed at 1937 ± 6 Ma during the migmatization and mantled the inherited cores of ca. 3500–2200 Ma. The 207Pb/206Pb age of the rims is consistent with the monazite Th–total Pb age (ca. 1938 Ma), suggesting that the rims are the product of Paleoproterozoic regional metamorphism. Our zircon age data are not sufficient for discerning the tectonic affinity of the Busan gneiss complex belonging to either Gyeonggi or Yeongnam massif. However, consistency of these ages with the ca. 1930 Ma Pb–Pb age reported from the Bagdalryeong gneiss complex, Gyeonggi massif, supports the tectonic model that the Busan gneiss complex is a part of the Gyeonggi massif. Discordant U–Pb data obtained from the zircon rims (293 ± 31 Ma) and the monazite Th–total Pb age (ca. 289 Ma) suggest that the Busan gneiss complex was affected by the Early Permian regional metamorphism during the Ogcheon (Okcheon) Orogeny. Therefore, we conclude that the Busan gneiss complex is a part of the Gyeonggi massif occurring as either a basement rock of the Ogcheon (Okcheon) metamorphic rocks, or a tectonically emplaced, exotic piece affected by the Early Permian Ogcheon (Okcheon) metamorphism. In addition, our U–Pb data suggest that the Busan complex is possibly linked with the Hida–Oki terrane in Japanese Islands.
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Surrounded by Daily Cover Soil 일일복토방식에 따른 매립 폐기물의 안정화에 관한 연구
( Takayuki Shimaoka ),( Naoko Hori ),( Shogo Sakita ),( Kentaro Miyawaki ),( Junichi Kano ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
현재 일본에서는, 매립지의 부지 확보가 어려워지고 있기 때문에, 복토재료의 이용 용적을 감소함으로써, 매립지의 수명을 연장시키는 데 관심을 갖고 있다. 본 연구는, 복토토양을 대신하여 사용될 수 있다고 여겨지는 복토대체재료에 관하여 이루어졌다. 오염물질의 거동을 해석하기 위해 두 개의 모형매립조가 설치되었고, 복토재료로는 폐지가 사용되었다. 장기 실험을 통해, 침출수의 발생량 특성(용적, 양)에 대한 여러 복토재료의 영향을 파악하였다. 토양을 적용한 복토층의 경우, 매립조 내에서 액상의 이동에 대해 채널링을 유발하였고, 이는 폐기물의 안정화(오염물질의 분해 및 세척효과에 의한)가 지연되는 것으로 조사되었다. 한편, 복토재료로서의 기능을 갖춘 대체 복토재료를 얇은 두께로 적용했을 경우, 안정화 기간을 줄일 수 있는 것으로 조사되었다. It is currently exceedingly difficult to obtain land for a new landfill site in Japan and towards prolonging the effective life of existing landfill sites by decreasing the volume consumed by the volume of cover soil materials, research is being conducted into an alternative material that may be used in the place of cover soil. This study utilized two dimensional large simulated landfill lysimeters replicating the cell method in order to elucidate the behavior of pollutants in waste landfill sites when used paper is utilized as alternative to cover material. The long term experiment was undertaken to determine the impact of different cover materials on the characteristics of the discharge flow (volume and quality) of the leachate. As a result of this experiment, it was found that a cover layer composed of soil causes channeling in the movement of liquid within the landfill thus creating a region in which the stabilization of the waste (washing out and degrading of pollutants) is retarded. On the other hand, an alternative cover material that allows a thinner cover layer while providing the functions required of cover material was found to mitigate the delayed stabilization.
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Remote Cardiac Rehabilitation With Wearable Devices
Atsuko Nakayama,Noriko Ishii,Mami Mantani,Kazumi Samukawa,Rieko Tsuneta,Megumi Marukawa,Kayoko Ohno,Azusa Yoshida,Emiko Hasegawa,Junko Sakamoto,Kentaro Hori,Shinya Takahashi,Kaoruko Komuro,Takashi Hir 대한심장학회 2023 Korean Circulation Journal Vol.53 No.11
Although cardiac rehabilitation (CR) has been shown to improve exercise tolerance and prognosis in patients with cardiovascular diseases, there remains low participation in outpatient CR. This may be attributed to the patients’ busy schedules and difficulty in visiting the hospital due to distance, cost, avoidance of exercise, and severity of coronary disease. To overcome these challenges, many countries are exploring the possibility of remote CR. Specifically, there is increasing attention on the development of remote CR devices, which allow transmission of vital information to the hospital via a remote CR application linked to a wearable device for telemonitoring by dedicated hospital staff. In addition, remote CR programs can support return to work after hospitalization. Previous studies have demonstrated the effects of remote CR on exercise tolerance. However, the preventive effects of remote CR on cardiac events and mortality remain controversial. Thus, safe and effective remote CR requires exercise risk stratification for each patient, telenursing by skilled staff, and multidisciplinary interventions. Therefore, quality assurance of telenursing and multi-disciplinary interventions will be essential for remote CR. Remote CR may become an important part of cardiac management in the future. However, issues such as cost-effectiveness and insurance coverage still persist.
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