• Title/Summary/Keyword: 이승종

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Distribution Characteristics of Fish Community to Stream Order in Namhan River Watershed (남한강수계의 하천차수별 어류군집 분포 특성)

  • Lee, Seung-Hyun;Lee, Hwang-Goo;Park, Sang-Jeong;Lee, Soo-Hyung;Choi, Jun-Kil
    • Korean Journal of Ecology and Environment
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    • v.47 no.spc
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    • pp.100-115
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    • 2014
  • For this study, we collected fishes of seven times at the 51 sites by stream orders (2-6) from November 2007 to September 2010. In the results, 55 species belonging 12 families were collected. And there were one species (1.8%) of Natural monument, 6 species (10.9%) of endangered and 22 species (40.0%) of Korea endemic. Dominant species was Zacco koreanus and subdominant species was Zacco platypus in whole. Stream orders (2-6) increased with increasing species, diversity (H'), evenness (EI), richness (RI), tolerant (TS), omnivore (OS) and decreasing individual, dominance (DI), sensitive (SS) insectivore (IS), total IBI score. Principal component analysis results showed location of variable (species, individual, community index, relative abundance of tolerant, sensitive, omnivore, insectivore species) and each site changes in upstream and down-stream changes in their distribution. Correlation analysis showed significant differences between stream orders (2-6) and variable (species: Sp, diversity index: H', omnivore species: OS, stream depth: SD, stream width: SW and water temperature: WT).

Growth and Yield of Sedum sarmentosum as Affected by Planting Density in Cultivation System Using a Rice Nursery Tray (벼 육묘상자를 이용한 돌나물 재배에서 삽식밀도에 따른 생육 및 수량)

  • Kim, Hyo-Jin;Lee, Seung-Yeob
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.53 no.2
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    • pp.196-202
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    • 2008
  • To establish a cultivation system of Sedum sarmentosum using a rice nursery tray ($30{\times}60{\times}3\;cm$) in non-heating plastic film house, cuttings of two local strains (Wanju and Keumsan) were prepared and planted at different planting densities (40, 60 and 80 cuttings per tray) on September 7th, and subsequent growth and yield at pre- and post-winter season were investigated. When pre-wintering growth were measured at 60 days after planting, high planting density (80 cuttings/tray) decreased leaf length and lateral shoot number per plant compared to 40 cuttings/tray. When post-wintering growth were measured on April 20th, no significant growth differences as affected by planting density were observed in Keumsan strain, while decreased stem diameter, node number and leaf number were observed in Wanju strain planted at 80 cuttings/tray compared to 40 cuttings/tray. Fresh and dry weights were not significantly different as affected by planting density, but those were significantly increased in Wanju strain compared to Keumsan strain. When regrowth characteristics followed by the first harvest were measured on June 5th, significantly increased stem number was observed at 80 cuttings/tray compared to 40 cuttings/ tray. Fresh and dry weight were significantly increased in Keumsan strain planted at 80 cuttings/tray compared to 40 cuttings/tray, and dry weight were increased in Wanju strain compared to Keumsan strain. Wanju strain showed higher shoot yield, thicker stem, shorter node and larger leaf, and non-succulent stem under high planting density compared to Keumsan strain. Accordingly, the optimum density was 40 cuttings per tray, and Wanju strain was adequate for the cultivation system using a rice nursery tray.

Idiopathic Fibrosing Mediastinitis Causing Extensive Fibrotic Veno-occlusion with Minimal Mediastinal Involvement (광범위한 섬유성 정맥 폐쇄를 동반한 특발성 섬유화성 종격동염 1예)

  • Kim, Je-Hyeong;Hur, Gyu-Young;Lee, Seung-Heon;Lee, Sang-Yeub;Park, Sang-Myun;Shin, Chol;Shim, Jae-Jeong;In, Kwang-Ho;Kim, Han-Kyeom;Kang, Kyung-Ho;Yoo, Se-Hwa
    • Tuberculosis and Respiratory Diseases
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    • v.52 no.3
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    • pp.278-282
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    • 2002
  • A 68-year-old woman was admitted after suffering facial edema with neck vein engorgement for approximately 2 months. A chest X-ray showed a mild widening of the superior mediastinum and a luminal obliteration of the superior vena cava(SVC) was noted on a computed tomograph. Venography showed that both subclavian veins were obstructed at the level of the proximal clavicle with a nonvisualization of the SVC. The SVC, both the innominate and the left internal jugular veins were completely obstructed with extensive cord-like fibrotic changes despite the absence of mediastinal involvement. The microscopic features showed a chronic granulomatous inflammation with a fibrosis minimally invading the mediastinal fat, which is consistent with fibrosing mediastinitis.

Inhibitory Activity of Plant Extracts against Prolyl Endopeptidase (식물자원의 Prolyl Endopeptidase 저해활성 탐색)

  • Kim, Geum-Soog;Lee, Seung-Eun;Lee, Hee-Ju;Kim, Yi-Min;Jeon, So-Young;Park, Chun-Geon;Seong, Nak-Sul;Song, Kyung-Sik
    • Korean Journal of Medicinal Crop Science
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    • v.12 no.1
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    • pp.1-9
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    • 2004
  • Prolyl endopeptidase (PEP) is proline-specific serine protease, cleaving peptide bonds on the biologically active neuropeptides such as substance P, vassopressin, and thyrotropin-releasing hormone and is, therefore, suggested to play important roles in learning and memory process. In this work, the inhibitory effect of plant extracts on PEP was investigated. Out of 200 plant extracts, Prunus mume, Pyrola. japonica, Hypericum ascyron, Astilbe chinensis var. typica, and Elaeagnus umbellata inhibited more than 90% of PEP activity at the concentration of 5 ppm.

Genetic and Morphological Relationship among Korean Hylotelephium Species(Crassulaceae) (한국산 꿩의비름속(돌나물과) 식물의 유전적, 형태적 유연관계)

  • Lee, Seung-Hoon;Park, Ki-Ryung
    • Korean Journal of Plant Taxonomy
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    • v.36 no.4
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    • pp.293-308
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    • 2006
  • Genetic and morphological studies using morphological and isozymic data from 20 populations of 6 Korea Hylotelephium were conducted to resolve the species relationships and the origin of polyploid species. The results of morphological studies suggest that triploid H. viviparum is closely related to H. verticillatum, and the high frequency alleles of two species were very similar each other in isozyme analyses. Unique fixation of $PGI-1^b$ in two species supports that H. verticillatum should be the diploid ancestor of H. viviparum. However, a unique $ALD-1^c$ allele is present in H. viviparum, and the lack of the common alleles of H. erythrostictum and H. spectabile in this species eliminated them from the candidates of another tetraploid ancestor of H. viviparum. Based on the high morphological and genetic similarities, our results supported that the Korea endemic H. viridescens might be originated from the H. erythrostictum or share a common ancestor with it. Besides, H. ussuriense is closely related with H. erythrostictum and H. viridescens.

Seasonal Variation in Fish Species Composition in Seagrass Bed of Aenggang Bay in the South Sea of Korea (남해 앵강만 잘피밭 어류의 월별 종조성 변화)

  • Lee, Seung Hwan;Lee, Yong Deuk;Shin, Min Gyu;Gwak, Woo Seok
    • Korean Journal of Ichthyology
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    • v.28 no.4
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    • pp.249-259
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    • 2016
  • Monthly variation in species composition was determined using fish samples collected by a beach seine between October 2013 and September 2014 in the eelgrass bed in Aenggang Bay, Namhae, Gyeongsangnamdo. A total of 3,174 individuals of 35 species, amounting to 3,137 g were collected. The dominant species was Gymnogobius heptacanthus, followed by Pholis nebulosa, Rudarius ercodes, Favonigobius gymnauchen and Hypodytes rubripinnis. Almost all fish collected were small in size or juveniles. Seasonal variation of species composition showed that the dominant species, used the shallow area of the eelgrass bed as a nursery ground and moved to a deeper water as they grew. Saurida elongata, Inimicus japonicus, Sphyraena pinguis, and Arothron hispidus, were first reported in an eelgrass bed in the southern coastal water.

Survey of vegetation in experimental stand of Chungju (충주 연습림 식생 조사)

  • Song, Cheelyoung;Lee, Kyounghyoung;Lee, Iose;Lee, Seungwoo;Park, Bumjin;Kim, Suna;Lee, Wook;Joen, Yang
    • Korean Journal of Agricultural Science
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    • v.23 no.2
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    • pp.182-187
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    • 1996
  • Herbal and woody plants were surveyed in native and artifitial stands of experimental forest and stand within the vicinity of belongings facilities in Chungju Experimental Forest, Chungnam National University. Appearance species were classified and taken a photograph of. There were a total of 135 kinds, 60 familia, 113 genus, 123 species, 12 variatas. 49 kinds of them were herbs, 86 kinds were woody plants, and 7 kinds were evergreen trees. We try to solve the problem that species of plant could be sustained going on and be diversified.

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First Record of a Shrimp Goby, Amblyeleotris japonica (Gobiiformes: Gobiidae) from Korea (딱총새우류와 공생하는 망둑어과 한국 첫기록종, Amblyeleotris japonica)

  • Byung-Jik Kim;Jung-Hyun An;Sang-Kil Kim;Seung-Hyun Lee
    • Korean Journal of Ichthyology
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    • v.35 no.4
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    • pp.366-371
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    • 2023
  • A shrimp goby, Amblyeleotris japonica is reported firstly from Korea, based on a single specimen (70.3 mm in SL) collected at a depth of 14 m in the southern Jejudo Island. The species is characterized by having a lower number of scales in longitudinal series, a rather compressed body, anterior limit of opercular opening located below between posterior margin of eye and preopercle, second dorsal fin with a single spine and 13 soft rays, anal fin with a single spine and 14 soft rays, and five brownish vertical bands on lateral body between head and caudal peduncle when fresh. New Korean names, "Se-u-but-i-mang-dug-sog" and "Bulg-eun-dong-gal-se-u-but-i-mang-dug", are proposed for the genus and the species, respectively.

A Case of Peripheral T-cell Lymphoma with Diffuse Bilateral Pulmonary Infiltration and Whole Body Rash (양측 미만성 폐침윤과 전신 홍반을 동반한 말초 T세포 림프종)

  • Lee, Seung Hyeun;Ha, Eun Sil;Kim, Jung Ha;Jung, Jin Yong;Lee, Kyung Joo;Kim, Se Joong;Lee, Eun Joo;Hur, Gyu Young;Jung, Ki Hwan;Jung, Hye Cheol;Lee, Sung Yong;Lee, Sang Yeub;Kim, Je Hyeong;Shin, Chol;Shim, Jae Jeong;In, Kwang Ho;Kang, Kyung Ho;Yoo, Se Hwa
    • Tuberculosis and Respiratory Diseases
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    • v.59 no.5
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    • pp.566-570
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    • 2005
  • Primary pulmonary non-Hodgkin's lymphoma (NHL) account for 0.4% of all types of lymphoma. Most cases are of the mucosa-associated lymphoid tissue (MALT) type, low grade B-cell lymphoma, but cases of the T-cell type are rare. The radiological findings frequently show hilar or mediastinal lymphadenopathy, but lung parenchymal involvement is uncommon. Here, a case of a patient, who presented with fever, generalized erythema, diffuse pulmonary infiltration and pleural effusion, diagnosed as a peripheral T-cell lymphoma, is reported.

Target strength estimation of dominant species in marine ranching ground of Jeju coastal water by KRM model (KRM 모델을 이용한 제주바다목장 해역 주요 우점종의 음향반사강도 추정)

  • Lee, Seung-Jong;Lee, Yoo-Won;Kim, Joo-Il;Oh, Taeg-Yun;Hwang, Bo-Kyu;Kim, Byung-Yeob;Lee, Kyoung-Hoon
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.46 no.2
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    • pp.157-163
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    • 2010
  • The indirect target strength (TS) estimation method which uses the Kirchhoff ray mode model (KRM model) was discussed to apply for a biomass estimation in the water of mixed species. TS of 25 live scorpion fishes for 120kHz were measured by a tethered method and of others dominant 5 species in the marine ranching ground of Jeju coastal water including a scorpion fish were also estimated by KRM model. The measurement TS of scorpion fish well agreed with the theoretical values and the standard formula of scorpion fish was estimated as $TS_{120kHz}=20Log\;(L)-72.9$ ($r^2=0.67$). TScm values estimated on trial to each sample of dominant 5 species were from -69.3dB to -75.1dB at 120kHz and they were in the general range of swimbladdered fish. It was clarified that TS by KRM model can be used to estimate fish biomass estimation by increasing a sample number and is more effective under the condition that there is rare TS information for inhabiting species in mixed-species area.