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Effects of Wind Fences on the Wind Environment around Jang Bogo Antarctic Research Station

Advances in Atmospheric Sciences 2017年第12期34卷 1404-1414页

作者： Jang-Woon WANG Jae-Jin KIM wonsik choi Da-Som MUN Jung-Eun KANG Hataek KWON Jin-Soo KIM Kyung-Soo HAN Department of Environmental Atmospheric Sciences Pukyong National University 45Yongso-ro Korea Polar Research Institute 26 Songdomirae-ro Yeonsu-gu Department of Spatial Information Engineering Pukyong National University 45Yongso-ro

This study investigated the flow characteristics altered by Jang Bogo Antarctic Research Station using computational fluid dynamics(CFD) modeling. The topography and buildings around Jang Bogo Station were constructed with computeraided-design data in the CFD model domain. We simulated 16 cases with different inflow directions, and compared the flow characteristics with and without Jang Bogo Station for each inflow direction. The wind data recorded by the site’s automatic weather station(AWS) were used for comparison. Wind rose analysis showed that the wind speed and direction after the construction of Jang Bogo Station were quite different from those before construction. We also investigated how virtual wind fences would modify the flow patterns, changing the distance of the fence from the station as well as the porosity of the fence. For westerly inflows, when the AWS was downwind of Jang Bogo Station, the decrease in wind speed was maximized(-81% for west-northwesterly). The wind speed reduction was also greater as the distance of the fence was closer to Jang Bogo Station. With the same distance, the fence with medium porosity(25%–33%) maximized the wind speed *** results suggest that the location and material of the wind fence should be selected carefully, or AWS data should be interpreted cautiously, for particular prevailing wind directions.

关键词： Jang Bogo Antarctic Research Station CFD model observation environment wind fence porosity

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麦肯锡全球研究院:亚洲——未来已至

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中国机电工业 2019年第10期 38-45页

作者： Oliver Tonby 华强森 wonsik choi 成政珉王帕蒂麦肯锡新加坡分公司麦肯锡全球研究院麦肯锡首尔分公司麦肯锡上海分公司

亚洲的未来蕴藏着巨大的潜力。西方观察家和媒体多年来一直在谈论亚洲的崛起,如今,全世界都应该关注亚洲的发展,因为未来比预想中来得更快。在过去的30年,亚洲取得了令人瞩目的发展——亚洲的消费水平正在快速上升,并已成功融入全球贸... 详细信息

亚洲的未来蕴藏着巨大的潜力。西方观察家和媒体多年来一直在谈论亚洲的崛起,如今,全世界都应该关注亚洲的发展,因为未来比预想中来得更快。在过去的30年,亚洲取得了令人瞩目的发展——亚洲的消费水平正在快速上升,并已成功融入全球贸易、资本、人才和创新流。未来几十年,亚洲经济体不仅会参与这些领域的流动,还会决定这些流动的方向。事实上,从互联网、贸易到奢侈品,亚洲在很多领域早已成为中流砥柱。如今的关键议题已不再是亚洲崛起的速度有多快,而是它将起到怎样的领导作用。

关键词：亚洲经济研究院全球贸易消费水平锡互联网资本

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金属表面氟树脂膜的摩擦磨损特性研究

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润滑与密封 2010年第8期35卷 27-30页

作者：任靖日张周周崔元植延边大学工学院机械系吉林延吉133002 釜山大学生物产业机械系韩国密陽627906

采用销-盘摩擦副接触方式,在常温、无润滑下,对常用的建筑用聚四氟乙烯(PTFE)、聚偏氟乙烯(PVDF)、聚氟乙烯(PVF)、氟树脂膜进行摩擦磨损试验,研究和分析不同载荷和滑动速度下3种氟树脂膜的摩擦学特性。通过摩擦因数变化关系和磨损表面... 详细信息

采用销-盘摩擦副接触方式,在常温、无润滑下,对常用的建筑用聚四氟乙烯(PTFE)、聚偏氟乙烯(PVDF)、聚氟乙烯(PVF)、氟树脂膜进行摩擦磨损试验,研究和分析不同载荷和滑动速度下3种氟树脂膜的摩擦学特性。通过摩擦因数变化关系和磨损表面形貌分析解析不同氟树脂模的磨损机制。研究结果表明,PVF膜材摩擦因数最大,PTFE膜材次之,PVDF膜材摩擦性能最好;PVF膜材磨损量最大,PVDF膜材次之,PTFE膜材磨损量最小,显示出最好的耐磨性;树脂膜开始剥离和严重磨损时所能承受的载荷,PTFE膜材为60N,PVDF膜材为22N,PVF膜材为14N,即PTFE膜材具有最好的耐久性。

关键词：氟树脂膜建筑摩擦磨损机制

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Glucose-mediated mitochondrial reprogramming by cholesterol export at TM4SF5-enriched mitochondria-lysosome contact sites

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Cancer Communications 2024年第1期44卷 47-75页

作者： Ji Eon Kim So-Young Park Chulhwan Kwak Yoonji Lee Dae-Geun Song Jae Woo Jung Haesong Lee Eun-Ae Shin Yangie Pinanga Kyung-hee Pyo Eun Hae Lee wonsik Kim Soyeon Kim Chang-Duck Jun Jeanho Yun Sun choi Hyun-Woo Rhee Kwang-Hyeon Liu Jung Weon Lee Department of Pharmacy College of PharmacySeoul National UniversitySeoulRepublic of Korea Research Institute of Pharmaceutical Sciences College of PharmacySeoul National UniversitySeoulRepublic of Korea BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit College of Pharmacy and Research Institute of Pharmaceutical SciencesKyungpook National UniversityDaeguRepublic of Korea Department of Chemistry Seoul National UniversitySeoulRepublic of Korea College of Pharmacy Chung-Ang UniversitySeoulRepublic of Korea Natural Product Informatics Research Center Korea Institute of Science and Technology(KIST)Gangneung-siGangwon-doRepublic of Korea School of Life Sciences Gwangju Institute of Science and Technology(GIST)GwangjuRepublic of Korea Department of Biochemistry College of MedicineDong-A UniversityBusanRepublic of Korea Global AI Drug Discovery Center College of Pharmacy and Graduate School of Pharmaceutical SciencesEwha Womans UniversitySeoulRepublic of Korea Interdisciplinary Program in Genetic Engineering Seoul National UniversitySeoulRepublic of Korea

Background:Transmembrane 4 L six family member 5(TM4SF5)translocates subcellularly and functions metabolically,although it is unclear how intracellu-lar TM4SF5 translocation is linked to metabolic *** is thus of interests to understand how the traffic dynamics of TM4SF5 to subcellular endosomal membranes are correlated to regulatory roles of ***:Here,we explored the metabolic significance of TM4SF5 localization at mitochondria-lysosome contact sites(MLCSs),using in vitro cells and in vivo animal systems,via approaches by immunofluorescence,proximity labelling based proteomics analysis,organelle reconstitution ***:Upon extracellular glucose repletion following depletion,TM4SF5 became enriched at MLCSs via an interaction between mitochondrial FK506-binding protein 8(FKBP8)and lysosomal *** labeling showed molecular clustering of phospho-dynamic-related protein I(DRP1)and certain mitophagy receptors at TM4SF5-enriched MLCSs,leading to mitochondrial fis-sion and ***4SF5 bound NPC intracellular cholesterol transporter 1(NPC1)and free cholesterol,and mediated export of lysosomal cholesterol to mitochondria,leading to impaired oxidative phosphorylation but intact tri-carboxylic acid(TCA)cycle andβ-*** mouse models,hepatocyte Tm4sf5 promoted mitophagy and cholesterol transport to mitochondria,both with positive relations to liver ***:Our findings suggested that TM4SF5-enriched MLCSs regu-late glucose catabolism by facilitating cholesterol export for mitochondrial reprogramming,presumably while hepatocellular carcinogenesis,recapitulating aspects for hepatocellular carcinoma metabolism with mitochondrial repro-gramming to support biomolecule synthesis in addition to glycolytic energetics.

关键词： cholesterol fluorescent imaging glucose catabolism hepatocellular carcinogenesis mem-brane contact sites mitochondria function mitophagy oxidative phosphorylation protein-protein interaction tetraspanin

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Analysis of Wireless Backhaul Networks Based on Aerial Platform Technology for 6G Systems

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Computers, Materials & Continua 2020年第2期62卷 473-494页

作者： Sooeun Song Minsu choi Yunyeong Goh Jusik Yun Wonsuk Yoo wonsik Yang Jaewook Jung Jong-Moon Chung School of Electrical and Electronic Engineering Yonsei UniversitySeoul03722Korea

As next generation communication technologies emerge,new high data rate applications and high-definition large-screen video streaming have become very *** a result,network traffic has been increasing so much that existing backhaul networks soon will not be able to support all traffic *** support these needs in future 6G mobile systems,the establishment of an additional backhaul wireless network is considered *** one of the solutions,a wireless backhaul network based on an aerial platform has been *** order to explore the potential of aerial platforms as wireless backhaul networks,in this paper,the categories for wireless backhaul networks based on aerial platforms are *** paper includes a survey of the definitions and characteristics of low altitude platforms(LAPs)and high altitude platforms(HAPs),as well as channel models according to the *** wireless backhaul network designs based on aerial platforms,altitude and platform selection options,deployment options,energy issues,and security based on target location and performance were considered in the analysis and investigation.

关键词： Wireless backhaul network aerial platform high altitude platform low altitude platform

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