• 제목/요약/키워드: 'Siberia'

검색결과 137건 처리시간 0.027초

Chemical Constituents of Plants from the Genus Patrinia

  • Kim, Ju Sun;Kang, Sam Sik
    • Natural Product Sciences
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    • 제19권2호
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    • pp.77-119
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    • 2013
  • The genus Patrinia, belonging to the Valerianaceae family, includes ca. 20 species of herbaceous plants with yellow or white flowers, distributed in Korea, China, Siberia, and Japan. Among them, P. scabiosaefolia (yellow Patrinia), P. saniculaefolia, P. villosa (white Patrinia), and P. rupestris are found in Korea. Several members of this genus have long been used in folk medicine for the treatment of inflammation, wound healing, ascetics, and abdominal pain after childbirth. Thus far, ca. 217 constituents, namely flavonoids, iridoids, triterpenes, saponins, and others have been identified in this genus. Crude extract and isolated compounds have been found to exhibit anticancer, anti-inflammatory, antioxidant, antifungal, antibacterial, cytotoxic activities, lending support to the rationale behind several of its traditional uses. The present review compiles information concerning the phytochemistry and biological activities of Patrinia, with particular emphasis on P. villosa, as studied by our research group.

The Chlorophyll Concentration in the Southwestern East Sea Observed by Coastal Zone Color Scanner (CZCS)

  • Lee Dong-Kyu;Son Seung-Hyun
    • Fisheries and Aquatic Sciences
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    • 제3권1호
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    • pp.8-13
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    • 2000
  • Monthly mean chlorophyll concentration in the East Sea was estimated from the ocean color observed by the Coastal Zone Color Scanner (CZCS) on Nimbus-7 satellite which had performed various remote sensing missions from 1979 to 1986. The areas of high chlorophyll concentration were found in the sea between Siberia coast and Sakhalin Island, in the Donghan Bay and in the Ulleung Basin. In the southwestern East Sea, especially in the area near Ulleung Island, the yearly maximum chlorophyll concentration occurred in December. The chlorophyll concentration in Ulleung Basin in December was about two times higher than during spring bloom in April. The early winter bloom occurred in the warm side of the front that was formed between warm water from the East China Sea and nutrition rich cold water from the northern East Sea.

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궤간 가변 윤축의 압축스프링에 대한 강도해석 (Strength Analysis for Compressed Coil Spring in the Gage - Adjustable Wheelset System)

  • 김철수;안승호;정광우;장승호;장국진;김정규
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2007년도 추계학술대회 논문집
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    • pp.1012-1017
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    • 2007
  • To reduce the cost and the time of transport in Eurasian railroad networks such as TKR(Trans-Korea Railway), TCR(Trans-China Railway) and TSR(Trans-Siberia Railway) owing to the problem of different track gauges (narrow/standard/broad gauge), it is important to develop the gauge - adjustable wheelset system to adapt easily to these gauges. Moreover, this system accomplishes periodically a conversion operation from the gauge variable segment between different gauge. Gauge adjustable compression coil spring during conversion process accomplishes repetitively a central role for operation mechanism between flange and locking part. Therefore, to assure the safety of the gauge-adjustment wheelset system, it is necessary to stress analysis of the optimized spring in the system. In this study, it was performed to optimal design of the spring for stress analysis by using the genetic algorithm.

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A Study on the Patchwork in the Costumes of the Arctic Regions

  • Moon, Shin-Ae;Kim, Moon-Sook
    • The International Journal of Costume Culture
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    • 제6권1호
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    • pp.30-37
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    • 2003
  • The most distinctive feature of the costumes of the Arctic regions from Alaska to Siberia centering around the Bering Sea connecting Asia to North America, is that each tribe makes clothes adequate to the climate and their lifestyles with animal hides obtained from hunting in their habitation. Furs or fish skins, the main materials for clothing, are characteristically cut into many pieces, and thus piece-joining patchwork is used to make or decorate garments. Patchwork is the technique that can create new designs with 3-dimensional and various combinations by modifying the simple materials, and also has the advantage of fitting the body without a certain cut line. Therefore, the patchwork found in the Arctic costumes may be developed from folk costume designs with limited materials like fur into new ones for modern or future costumes.

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Growth and Reproductive Biology of the Freshwater Shrimp Exopalaemon modestus(Decapoda: Palaemonidae) in A Lake of Korea

  • Oh, Chul-Woong;Suh, Hae-Lip;Ma, Chae-Woo;Jeong, In-Ju;Kim, Jang-Young
    • 한국어업기술학회:학술대회논문집
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    • 한국어업기술학회 2001년도 추계 수산관련학회 공동학술대회발표요지집
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    • pp.313-314
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    • 2001
  • The palaemonid shrimp Exopazaemon modestus inhabits the freshwater of the Indo-West Pacific, Siberia, Manchuira, Korea, China, Taiwan (Holthuis, 1980) and is abundant in the fresh water areas of southwest of Korea. Palaemonid shrimps are adapted to a variety of habitats in freshwater, brackish and marine environments. They play important role in the ecosystem of fresh, brackish and marine waters, acting as predators feeding on algae, detritus, crustaceans and meiofauna (Bell and Coull, 1978) and in turn, as preys for fishes and other predators (Anderson, 1985). (omitted)

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시베리아 - 북녘의 대초원 (Siberia - the Steppes of Northward)

  • 소대화
    • 동굴
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    • 제74호
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    • pp.1-10
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    • 2006
  • 한 러 국제협력 시대 - 냉전의 철벽이 무너지고 사회주의 종주국이었던, 구소련이 개방주의를 천명한지 어언 10여년이 흘러간 오늘, 나는 홀연히 서서 그 동안 시장경제를 부르짖으며 개방화에 박차를 가해 경제대국의 꿈을 이뤄보려고 13억 인구가 뒤엉켜 붙은 밀가루 반죽 같은 중국대륙을 거쳐, 러시아 및 CIS 국가사회를 드나들며 오로지 자신만이 인정하는 소위 학술문화교류협력활동이라는 유명무실한 명분 앞에서 조용히 자신을 돌이켜보는 소중한 시간으로, 시베리아방문탐사 활동에 참여해 서로를 믿고 돕는 마음으로 국익을 위해 활동하는 우리 조사단원들과 함께 웃으며 지내던, 그 날들을 회고해 보는 틈새를 만끽해보고자 과감히 붓을 들어 키보드를 때리면서 조용히 변화하는 운율의 감상에 젖어보며, 한 러 문화협력 강화시대의 문을 열어 한국동굴학회가 추구하는 "동북-중앙아시아지역 동굴과학정보망 구축"의 국제화사업이 성공적으로 추진되기를 희망하며, 한국동굴학회의 발전을 기원합니다.

Reinforcement of Polyethylene Pipes with Modified Carbon Microfibers

  • Petukhova, E.S.;Savvinova, M.E.;Krasnikova, I.V.;Mishakov, I.V.;Okhlopkova, A.A.;Jeong, Dae-Yong;Cho, Jin-Ho
    • 대한화학회지
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    • 제60권3호
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    • pp.177-180
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    • 2016
  • The surface properties of carbon microfibers (CMFs) are modified by chemical deposition of carbon nanofibers via the so-called ethylene processing. CMFs and the modified CMFs (MCMFs) are investigated as reinforcement additives to fabricate polyethylene (PE) composites with enhanced mechanical characteristics. The mechanical properties of the PE-MCMF composites are found to be better and favorable for applications under harsh climatic conditions such as those in Siberia. Improved adhesive interaction between MCMFs and PE is responsible for these enhanced mechanical properties.

동해상의 월별 바람응력 및 바람응력컬 분포 (Monthly Wind Stress and Wind Stress Curl Distributions in the Eastern Sea(Japan Sea))

  • 김철호;최병호
    • 물과 미래
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    • 제19권3호
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    • pp.239-248
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    • 1986
  • Monthly wind stress, wind stress curl and volume transport stream functions are computed in the Eastern Sea(Japan Sea) based upon observed wind and atmospheric pressure data respectively. The presented two results show different distributios on locality and season but as common features the results reveal the northwesterly surface wind stress \ulcorner 새 the monsoon in winter, south to southwesterly wind stress \ulcorner 새 the southerly wind in summer and strond anticyclonic curl in the northern part on the Eastern Sea(Japan Sea) in winter. In the distributions obtained from the sea level atmospheric pressure data, the maximum value of the wind stress and of curls of small scales are shown off the southeast coast of Siberia and northeast coast of Korea. Volume transport distributions obtained from the Sverdrup relationship suggest that the strong northward boundary current can be formed along the northeast coast of Korea in winter and weak southward boundary current in summer.

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동부 아시아에서 서식하는 흰넓적다리 붉은 쥐, Apodemus peninsulae Thomas(설치목, 포유강), 5아종의 형태적 형질의 지리적 변이 (Geographic Variation of Morphometric Characters in Five Subspecies of Korean Field Mice, Apodemus peninsufae Thomas (Rodentia, Mammalia), in Eastern Asia)

  • Koh, Hung-Sun;Lee, Woo-Jai
    • 한국동물학회지
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    • 제37권1호
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    • pp.33-39
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    • 1994
  • Four external and 27 cranial characters of Korean field mice (Apodemus peninsuluek from nine localities in eastern Asia, representing ave subspecies, were analyzed by multivariate statistical methods. Three forms were recognized: a large-size form from Korea (subspecies peninsulael, southern Manchuria (praeto4, and northern Manchuria (majofi a middle-size form from urestern Siberia (tschergal and southuvestern China (sowerbyi); a small-size form from northeastern China (sowerbyi). It is also revealed that variations among the three forms are clinal rind circular. It is confirmed that Apodemus peninsuloe could be classified into two subspecies (peninsulae and sowerbyl) within the distribution range in the continent of Asia, as noted tv Corbel (1978). However, it is found that subspecies peninsulae includes praetor and moior and that subspecies sowerbyi includes tscherga, indicating that subspecies tscherga is not the synonym of subspecies peninsulae, but that of subspecies sowerbyi.

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Forest Fire Monitoring System Using Remote Sensing Data

  • Hwangbo, Ju-Won;Yu, Ki-Yun
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.747-749
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    • 2003
  • For forest fire monitoring in relatively cool area like Siberia, design of Decision Support System (DSS) is proposed. The DSS is consisted of three different algorithms to detect potential fires from NOAA AVHRR image. The algorithm developed by CCRS (Canada Center for Remote Sensing) uses fixed thresholds for multi-channel information like one by ESA (European Space Agency). The algorithm of IGBP (International Geosphere Biosphere Program) involves contextual information in deriving fire pixels. CCRS and IGBP algorithms are rather liberal compared to more conservative ESA algorithm. Fire pixel information from the three algorithms is presented to the user. The user considers all these information in making decision about the location fire takes place.

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