• Title/Summary/Keyword: Small island

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Forehead Island Flap For Nasal Reconstruction (이마 섬피판을 이용한 코재건술)

  • Lee, Keun-Cheol;Kwon, Yong-Seok;Jung, Ki-Hwan;Han, Jae-Jung;Park, Jung-Min;Kim, Seok-Kwun
    • Archives of Plastic Surgery
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    • v.32 no.2
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    • pp.199-204
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    • 2005
  • The nose is the most prominent area of the face, therefore susceptible to trauma and skin cancer. When small sized defect is in nasal tip, it results in disturbance of the facial harmony even if replantation, composite graft, skin graft or median forehead flap has been used for the reconstruction. So it is needed that the best method reconstruction is performed according to the degree of defect or deformity. And at the same time the physiology and anatomy of nose were clarified and its aesthetic subunits were employed. How can we cover the about 3 cm sized nasal defect in nasal tip with cartilage exposure? At first, we can think forehead island flap is most appropriate. We performed 7 cases of the forehead island flap for reconstruction of the defect in nasal tip(4 cases: cancer, 3 cases: trauma) from March, 2001 to August, 2004. This result was satisfactory in the point of texture, color, donor scar, and there were no complication such as wound disruption, infection, flap atrophy, and hematoma. The advantages of forehead island flap are: 1) No injury of deep vessel and nerve, 2) control of shape and volume, 3) Short operation time, 4) primary closure of donor site, 5) one stage operation. Also, forehead island flap can cover the defect in nose where skin graft and local flap can not cover. But, operator always must take care for flap congestion and donor site scar. We thought forehead island flap is one of the best option of reconstruction of nasal tip defect.

Design and Construction Case of Urban Tunnel in Alluvial Soil (충적토사지반에서의 도심터널 설계 및 시공)

  • Chang, Seok-Bue;Huh, Do-Hak;Moon, Sang-Jo;Kim, Do-Su
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.09a
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    • pp.829-834
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    • 2009
  • Alluvial soil is one of the most difficult grounds for tunneling works due to the insufficient ground strength and excessive ground water inflow. Dduk island in Seoul has a wide alluvium developed by two rivers, Han and Jung-Ryang. Subway tunnel of $\bigcirc\bigcirc$ line planed across Dduk island has highly poor ground conditions due to small cover and deeply developed alluvium. Moreover, much part of this tunnel is located parallel to the bridge foundations of another railway with a small horizontal distance. Original design was done in 2002 and construction has been in progress. During the construction, tunnel design has been partly changed and adjusted for the complex ground condition and the demand from related organizations. This paper intend to introduce the urban tunnel design and construction in alluvial soils. This line could be divided three sections(A, B, C) according to ground and adjacent conditions. Section A is featured by mixed tunnel faces consisted with alluvial soils and weathered or weak rocks. The feature of section B is that tunnel underpasses near the bridge foundations of another subway. Lastly, section C with a very short length is the most difficult construction conditions due to the small cover, poor ground, obstacles on and underneath ground surface.

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A New Record of Genus Echinolampas Sea Urchin (Echinoidea: Echinolampadoida: Echinolampadidae) from Jejudo Island, Korea

  • Shin, Sook;Lee, Taekjun
    • Korean Journal of Environmental Biology
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    • v.33 no.2
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    • pp.201-204
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    • 2015
  • A sea urchin was collected from 140 m deep at Gapado which is nearby Moseulpo in Jejudo Island, Korea on 30 June 2010. This specimen was classified as Echinolampas koreana H.L. Clark 1925, belonging to family Echinolampadidae of order Echinolampadoida based on its morphological characteristics. This order and lower categories are newly recorded from Korea. Distinct morphological characters of this species are as follows: test is relatively high. Abactical system has four large genital pores. Periproct is slightly sunken and situated below equator line. Peristome is very small and rather deeply sunken. Tridentate and ophiocephalous pedicellariae are present. Color in alcohol is light purple. These morphological characters are re-described with illustrations.

A new record of sea star genus Henricia (Asteroidea: Spinulosida: Echinasteridae) from Jeju Island, Korea

  • Ubagan, Michael D.;Shin, Sook
    • Journal of Species Research
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    • v.5 no.3
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    • pp.351-354
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    • 2016
  • Some asteroid specimens of genus Henricia were collected at a depth of 50-90 m near waters of Moseulpo, Jeju Island, Korea using fishing nets on September 2015. The specimens were identified as Henricia elachys Clark and Jewett, 2010 belonging to the family Echinasteridae of order Spinulosida. This small species can be distinguished from other Henricia species by short arms, moderately inflated arm base, and slightly broad disk. The morphological characteristics of this species were described with illustrations. Up to date, there are nine species of genus Henricia reported in Korean fauna.

Morphological Change in Seabed Surrounding Jinwoo-Island Due to Construction of New Busan Port - Qualitative Evaluation through Numerical Simulation (부산신항 건설이 진우도 주변 해저지형 변화에 미치는 영향 - 수치실험을 통한 정성적 평가)

  • Hong, Namseeg
    • Journal of Ocean Engineering and Technology
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    • v.32 no.3
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    • pp.192-201
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    • 2018
  • In this study, a qualitative evaluation of the morphological changes in the seabed surrounding Jinwoo-Island due to the construction of the new Busan port were determined through a numerical simulation. Various scenarios for the discharge of the Nakdong river estuary dam and construction stage of the new Busan port were established and utilized for an indirect and qualitative investigation through simulation using the numerical model implemented in this study. It was concluded through a qualitative study that the morphological changes in the seabed surrounding Jinwoo-Island were typical estuary seabed changes due to the discharge of the Nakdong river estuary dam and waves from the open sea. The effects from the construction of the new Busan port were relatively small.

Assessment of Actual Evapotranspiration in the Hancheon Watershed, Jeju Island (제주 한천유역의 실제 증발산량 평가)

  • Kim, Nam Won;Lee, Jeong Eun
    • Journal of Environmental Science International
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    • v.22 no.5
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    • pp.533-542
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    • 2013
  • In this study, estimation methods for actual evapotranspiration have been studied using the concept of potential and actual evapotranspiration. Among the diverse estimation methods, SWAT-K application is chosen for hydrological modeling. For Jeju island we have characterized annual and monthly evapotranspiration using SWAT-K. In the results, simulated potential evapotranspiration reached to the 91% of small pan evaporation. With respect to the temperature lapse rate($-6^{\circ}C/km$) depending on the altitude of Halla mountain, evapotranspiration rate decreased by 7.5% compared to the status when the temperature data from the Jeju weather station were applied to the watershed. As the average of annual rainfall increased, potential evapotranspiration was increased, actual evapotranspiration was, however, decreased.

First Record of the Giant Grouper Epinephelus lanceolatus (Perciformes: Serranidae: Epinephelinae) from Jeju Island, South Korea

  • Myoung, Jung-Goo;Kang, Chung-Bae;Yoo, Jae Myung;Lee, Eun Kyung;Kim, Sung;Jeong, Choong-Hoon;Kim, Byung-Il
    • Fisheries and Aquatic Sciences
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    • v.16 no.1
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    • pp.49-52
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    • 2013
  • A single specimen of Epinephelus lanceolatus, belonging to Epinephelinae of the family Serranidae, was newly collected from Jeju Island, South Korea, in December 2009. Epinephelus lanceolatus is characterized by anterior lateral-line scales with branched tubules, cycloid scales, irregular white spots, and fins with numerous small black spots. We propose a Korean name, "Dae-wang-ba-ri' for this species.

Foraminifera from shell deposits of the Jindo Island (진도 패각층의 유공충)

  • Lee Ho-Young
    • The Korean Journal of Petroleum Geology
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    • v.1 no.1 s.1
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    • pp.63-67
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    • 1993
  • Foraminiferal assemblages from shell beds of Jindo Island indicate shallow water accumulation under warm to temperate condition near the mouth of a small estuary. 11 species of benthonic Foraminifera belonging to 10 genus have been extracted from 12 samples. Cavarotalia annectens dominates, accounting for 57 to 90 percent of the total fauna. The foraminiferal assemblages of the shell beds indicates Post-glacial sedimentation.

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Bandwidth Enhancement for SSN Suppression Using a Spiral-Shaped Power Island and a Modified EBG Structure for a ${\lambda}$/4 Open Stub

  • Kim, Bo-Bae;Kim, Dong-Wook
    • ETRI Journal
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    • v.31 no.2
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    • pp.201-208
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    • 2009
  • This paper proposes a spiral-shaped power island structure that can effectively suppress simultaneous switching noise (SSN) when the power plane drives high-speed integrated circuits in a small area. In addition, a new technique is presented which greatly improves the resonance peaks in a stopband by utilizing ${\lambda}$/4 open stubs on a conventional periodic electromagnetic bandgap (EBG) power plane. Both proposed structures are simulated numerically and experimentally verified using commercially available 3D electromagnetic field simulation software. The results demonstrate that they achieve better SSN suppression performance than conventional periodic EBG structures.

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New record of a sea star of genus Henricia (Asteroidea: Spinulosida: Echinasteridae) from Jeju Island, Korea

  • Ubagan, Michael Dadole;Shin, Sook
    • Korean Journal of Environmental Biology
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    • v.37 no.1
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    • pp.68-71
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    • 2019
  • An asteroid specimen that belongs to the genus Henricia was collected from the waters near Ongpo harbor, Jeju Island using fishing net on 24 January 2017. The specimen was identified as Henricia anomala Hayashi, 1973, which belongs to the family Echinasteridae and order Spinulosida. Henricia anomala was first described by Hayashi, 1973, who captured it from Sagami Bay at a depth of 110-116 m. This species can be distinguished from other Henricia species by short arms (R/r=4), abactinal spines lining the abactinal plates and bearing about two to five spinelets, closely meshed abactinal skeleton, composed of small rod-like and subtriangular plates, a narrow papular area containing one or two papulae, and adambulacral armature composed of five to seven bluntly pointed spinelets. This is the first report of Henricia anomala in Korea.