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A herbological study on the native plants of Dokdo island (독도의 식물 한약자원에 관한 본초학적 연구)

  • Roh, Seong-Soo;Seo, Bu-Il;Park, Ji-Ha
    • The Korea Journal of Herbology
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    • v.27 no.2
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    • pp.17-24
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    • 2012
  • Objective : For the purpose of investigating the herbal resources of Dokdo island, this study was designed. Method : For the first time, we searched the native plants of Dokdo island from research data. And we examined herbological books on the plants of Dokdo island. Result : The native herbaceous plants in Dokdo island were 27 family and 73 species, and the medicinal plants were 49 species among them. The woody plants in Dokdo island were 12 family and 13 species, and the medicinal plants were 10 species among them. The main medicinal parts of medicinal plants were the whole body of herbs, roots, and seeds in order. The herbal medicines with cold or cool nature were 45 species, they took the top nature of the herbal medicines. According to the properties and principal action of native herbal medicines in Dokdo island, the major parts were classified into drugs for clearing away heat, eliminating toxin, activating blood flow and removing blood stasis, urination, removing heat from the blood and stopping of bleeding. The number of native herbal medicines with small toxicity in Dokdo island were 7 species. Conclusion : For the purpose of preserving the native plants of Dokdo island, we should recognize not only medical benefits but also matters that demand special attention.

Thermal Infrared Remote Sensing Data Utilization for Urban Heat Island and Urban Planning Studies

  • Lee, Hye Kyung
    • Journal of KIBIM
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    • v.7 no.2
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    • pp.36-43
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    • 2017
  • Population growth and rapid urbanization has been converting large amounts of rural vegetation into urbanized areas. This human induced change has increased temperature in urban areas in comparison to adjacent rural regions. Various studies regarding to urban heat island have been conducted in different disciplines in order to analyze the environmental issue. Especially, different types of thermal infrared remote sensing data are applied to urban heat island research. This article reviews research focusing on thermal infrared remote sensing for urban heat island and urban planning studies. Seven studies of analyses for the relationships between urban heat island and other dependent indicators in urban planning discipline are reviewed. Despite of different types of thermal infrared remote sensing data, units of analysis, land use and land cover, and other dependent variable, each study results in meaningful outputs which can be implemented in urban planning strategies. As the application of thermal infrared remote sensing data is critical to measure urban heat island, it is important to understand its advantages and disadvantages for better analyses of urban heat island based on this review. Despite of its limitations - spatial resolution, overpass time, and revisiting cycle, it is meaningful to conduct future research on urban heat island with thermal infrared remote sensing data as well as its application to urban planning disciplines. Based on the results from this review, future research with remotely sensed data of urban heat island and urban planning could be modified and better results and mitigation strategies could be developed.

Ecological Studies On The Growth Of Transplanted Oyster, Crassostrea gigas (Thunberg) From Southern Coast Of Korea (남해산 참굴 Crassostrea gigas(Thunberg)의 이식성장에 관한 생태학적 연구)

  • Kim, Yong Ho
    • 한국해양학회지
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    • v.15 no.1
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    • pp.8-16
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    • 1980
  • The seed of Japaness oyster, Crassostrea gigas(Thunberg), cultivated along the southerncoast of Korea have been transplanted and cultivated in both the Seonyu island and the Eocheong island of the western coast of Korea. The present study was carried out to investigate the growth of transplanted oysters, environmental factors influencing their fatness, and differences of two areas between the Seonyu island and the Eocheong island during the period from April to November, 1978. The results obtained were as follows: 1. Maximum height of the shell was 69.2mm (58.4mm on the average) in the island of Seonyu and 64.8mm(53.2mm) in the island of Eocheong, respectively. 2. The fatness of the oysters measured in the island of Seonyu (5.2g/month) was greater than in the island of Eocheong (2.5g/month) 3. The shell height was increased with high temperature while, the shell fatness with low temperature. 4. The growth rate of the transplanted seed oysters was twice as much as that of native ones in the western coast of Korea. 5. Environmental conditions of Seonyu island were more favorable in cultivating oysters than those of the Eocheong island.

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Research on the Plant Distributions in Na-Ree Dong in Dagelet Island and Baik-Rok Dam in Cheju Island (울릉도의 나리동 및 제주도의 백녹담 식물분포에 관한 연구(硏究))

  • Do, Sang-Hak;Park, Su-Hyun
    • Korean Journal of Pharmacognosy
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    • v.7 no.1
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    • pp.35-40
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    • 1976
  • The plant distributions in the Na-Ree Dong in Dagelet Island and Baik-Rok Dam in Cheju Island were investigated and 143 genera, 187 species of plants were found in the Na-Ree Dong in Dagelet Island during 15 years from 1961 to 1975. From 1957 to 1975, 113 genera, 174 species of plants were found in Baik-Rok Dam in Cheju Island.

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The Distribution of non-native Plants in Ulleung Island (울릉도의 귀화식물 분포)

  • Park Soo-Hyun;Koh Kang-Suk;Kil Ji-Hyon
    • Korean Journal of Plant Resources
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    • v.19 no.2
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    • pp.237-242
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    • 2006
  • Non-native flora of the Ulleung island, located in the eastern part of South Korea, was surveyed as 54 taxa with 16 families, 35 genera, 53 species and 1 variety. Considering the geographical distribution aspects of the island, the flora of the island showed more closely related with Korean Peninsular than Japan. Poaceace (28%) and Asteraceae (24%) represents more than 50% of the non-native flora in Ulleung island, meaning that they have an advantage of seed dispersal and adaptation to new environments. Ulleung island is comparatively small island of vulnerable to the attack of invasive alien plants but presently, it has the least number of non-native plants than other areas in South Korea. Therefore, we need to take much interest in prevention and mitigation of non-native plant in the future.

The Vulnerability Assessment of Water Supply through the Analysis of Emergency Water Shortage in cut off Water Supply-prone Island area (상습단수도서지역의 비상용수 부족량 분석을 통한 용수공급 취약성 평가)

  • Lee, Yoon-Ha;Hong, Won-Hwa;Lee, Ji-Soo
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.30 no.1
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    • pp.253-260
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    • 2014
  • Because of the geographical nature, water source is difficult to develop in islands. So water shortage is serious in island area. Relatively vulnerable to natural disasters, in emergency they have to rely on water supply ship. But water supply ship is not enough and the distance to island is far, island's water supply system is unstable and poor. In addition, most islands rely on a single water source, in the event of a disaster Island residents face serious water shortages. Thus, a stable water supply on the island in order to come up with measures to increase the absolute amount and the administration should seek to increase the supply effect. Also, in an emergency to minimize the social and economic damage and supply standard precautions should be made. In this study, Shortage of water supply on the island that can lead to a scenario was created and then estimating water deficit and to assess the vulnerability of water supply was. Water shortage crisis that can cause in island area were classified. Also water deficit was estimated when each water supply was interrupted and other water sources can not substitute. And vulnerability was assessed by possibility of cause damage to the water supply.

On the Seasonal Variation of Urban Heat Island Intensity According to Meteorological Condition in Daegu (대구지역의 기상조건에 따른 도시열섬강도의 계절별 변화특성)

  • Ahn Ji-Suk;Kim Hae-Dong
    • Journal of Environmental Science International
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    • v.15 no.6
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    • pp.527-532
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    • 2006
  • The purpose of this study is to clarify the characteristic of urban heat island intensity in urban area formed at a basin. Thermal environments for basin-type cities are influenced by significant topographic relief winds. In this study, we analyzed the diurnal variations of the heat island intensity according to meteorological condition and season using AWS(Automatic Weather observation System) data in Daegu Metropolitan area for 1 year(3/April, 2003 $\sim$ 2/April, 2004). In this study, we defined the urban heat island intensity as the air temperature difference between two points, the downtown and the suburban area. The suburban area is located at valley mouth around the western tip of Daegu. The results are summarized as follows; 1. The maximum heat island intensity was recorded at early morning under the meteorological conditions, calm and clear 2. The heat island intensity was strong in the order of winter, fall, spring and summer. 3. The heat island intensity came out minus values in the afternoon. This phenomenon is known as a com mon for basin-type cities. 4. The heat island intensity was twice or more in clear and calm than not so.

Characteristics on Transformation of Community Space in Gapa Island (가파도 커뮤니티공간의 변천특성에 관한 연구)

  • Byun, Kyeong Hwa;Lee, Jeong Lim
    • Journal of the Korean Institute of Rural Architecture
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    • v.14 no.4
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    • pp.37-45
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    • 2012
  • The villages in island were established overcoming natural environment through Shamanism and changed by developing various industrials like transportation. Gapa Island located in southern part of Jejudo is flat topography different from the other islands. The purpose of this study is to clarify characteristics on transformation of community space in Gapa Island. For purpose, community spaces in Gapa Island are researched such as establishment, function, change, and use of community space. Spatial components in Gapa Island are like as spaces in faith, residential area, area for production, commercial zone, community space, education facilities, public offices, port, and roads. The methods of this study are literature research and interview survey for residents in Gapa Island. The results are as followings: First, community space is in charge about social, industrial, and religious function. Second, for traditional spaces separated for male and female, demarcation of space does not exist in industrial side but the demarcation has still been exist in religious side. Finally, by development of tourism new community space has been charge in festival function as well as function of space like agora for meeting with people freely, which is relatively various in function of community space in social side. Role of the dock for ship, main transportation of island, is being increasing as square.

Development of a Window Program for Searching CpG Island (CpG Island 검색용 윈도우 프로그램 개발)

  • Kim, Ki-Bong
    • Journal of Life Science
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    • v.18 no.8
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    • pp.1132-1139
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    • 2008
  • A CpG island is a short stretch of DNA in which the frequency of the CG dinucleotide is higher than other regions. CpG islands are present in the promoters and exonic regions of approximately $30{\sim}60$% of mammalian genes so they are useful markers for genes in organisms containing 5-methylcytosine in their genomes. Recent evidence supports the notion that the hypermethylation of CpG island, by silencing tumor suppressor genes, plays a major causal role in cancer, which has been described in almost every tumor types. In this respect, CpG island search by computational methods is very helpful for cancer research and computational promoter and gene predictions. I therefore developed a window program (called CpGi) on the basis of CpG island criteria defined by D. Takai and P. A. Jones. The program 'CpGi' was implemented in Visual C++ 6.0 and can determine the locations of CpG islands using diverse parameters (%GC, Obs (CpG)/Exp (CpG), window size, step size, gap value, # of CpG, length) specified by user. The analysis result of CpGi provides a graphical map of CpG islands and G+C% plot, where more detailed information on CpG island can be obtained through pop-up window. Two human contigs, i.e. AP00524 (from chromosome 22) and NT_029490.3 (from chromosome 21), were used to compare the performance of CpGi and two other public programs for the accuracy of search results. The two other programs used in the performance comparison are Emboss-CpGPlot and CpG Island Searcher that are web-based public CpG island search programs. The comparison result showed that CpGi is on a level with or outperforms Emboss-CpGPlot and CpG Island Searcher. Having a simple and easy-to-use user interface, CpGi would be a very useful tool for genome analysis and CpG island research. To obtain a copy of CpGi for academic use only, contact corresponding author.