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      • 컴푸터 숫자화 영상분석법을 이용한 노화에 따른 피부탄력섬유의 변화에 관한 연구

        남기흠,오칠환,김수남 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.3

        Gerontological studies on skin are complicated by extrinsic stresses that intensify the intrinsic effect of times. The elsatic fiber networks undergo profound alterations during the aging process. The age related to elastic fiber abnormalities are differents from those of actinic elastin quantitatively. However, the precise quantitation of elastic fiber in human skin has been in difficulty since various conventional methods do not lend themselves to accurate quantitation. A computerized digital image analysis for quantifying the various morphological factor of elasitc fiber in light microscopic section has been developed that considers the nonuniform distribution of the elastic fiber by Flotte. So the author quantified the elastic fiber by Flotte's densest method. The biopsy materials was obtained from 240 patients through a various age group and stained by Verhoeff stain for elastic fiber. Furthermore. the author compared the morphology and amount of elastic fiber among the various age groups in exposed and nonexposed skin by using a computerized digital image analysis system. Dermis was divided into three observed fields by the upper. the middle and the lower part. The morphology and the amount of the elastic fiber were studied by various factors, such as length, breadth, shape factor, perimeter and area. When the author observed the whole three parts. the area. breadth and perimeter of the elastic fibers are increased according to the age stoups. but the length increases after fifties in the exposed area. In nonexposed area. there are no singnificant differences among the age groups throughout the whole part. The most signifacant morphological change of the elastic fiber occurred in the upper part. When the author compared among age groups in the upper part, the length of elastic fiber are increases in the exposed area. However its length decreases according to the age in the nonexposed area. In both areas, breadth increases according to the age groups in upper part.

      • KCI등재

        Carex brevispicula (Cyperaceae), a new species from Korea

        남기흠,장현도,이병윤,정규영 한국식물분류학회 2020 식물 분류학회지 Vol.50 No.4

        A new species, Carex brevispicula G. H. Nam & G. Y. Chung (Cyperaceae), was found in Korea. Carex brevispicula is similar to the related species C. chungii Z. P. Wang and C. genkaiensis Ohwi in that its achenes are constricted in the middle part. However, C. brevispicula is distinguished from C. chungii as the plants, staminate, and pistillate spikes are shorter and its pistillate scales are pale green; C. brevispicula is distinguished from C. genkaiensis by its awned staminate and pistillate scales. The scientific name of this new species was based on the fact that its inflorescence is shorter than that of C. chungii. The corresponding Korean name, “Jom-mok-po-sa-cho,” means that the plants of this species are smaller than the “Mok-po-sa-cho” types (C. genkaiensis). We hereby provide a description of C. brevispicula, with corresponding illustrations and photographs, a distribution map, and a key of related taxa.

      • KCI등재

        사초속 청사초절(사초과)의 한국 미기록종: 큰청사초(Carex chungii Z. P. Wang), 바늘청사초(Carex tsushimensis (Ohwi) Ohwi), 흰밀사초(Carex multifolia Ohwi)

        남기흠,김종환,김중현,김선유,장진,정규영 한국식물분류학회 2014 식물 분류학회지 Vol.44 No.1

        Three unrecorded species, Carex chungii Z. P. Wang, C. tsushimensis (Ohwi) Ohwi, C. multifolia Ohwi were found in Korea. C. chungii Z. P. Wang was found in Is. Wan and Is. Geogeum, Jeollanam-do and Namhae, Gyeongsangnam-do. This species is distinguished from C. leuchoclora Bunge by achenes constricted above in the middle. C. tsushimensis (Ohwi) Ohwi was found in Is. Gageo, Sinan, Jeollanam-do. This species is distinguished from C. conica Boott by pistillate scales with a long arista. C. multifolia Ohwi was found in Haenam, Jeollanam-do. This species is distinguished from C. sachalinensis var. sikokiana (Franch. & Sav.) Ohwi by caespitose and leaf of light gray. We provide here their description, illustration, photographs and the key of related species. 한국 미기록종인 큰청사초(Carex chungii Z. P. Wang), 바늘청사초(C. tsushimensis (Ohwi) Ohwi), 흰밀사초(C. multifolia Ohwi)의 사초속 청사초절 3분류군이 발견되었다. 큰청사초(C. chungii Z. P. Wang)는 전라남도 완도, 거금도와 경상남도 남해에서 발견하였다. 청사초(C. leuchoclora Bunge)와 유사하나 수과의 중륵이 수축하여 뚜렷이 구분된다. 바늘청사초(C. tsushimensis (Ohwi) Ohwi)는 전라남도 신안군 가거도에서 발견되었으며, 애기사초(C. conica Boott)와 유사하나 암꽃인편에 현저하게 긴 까락으로 구분된다. 흰밀사초(C. multifolia Ohwi)는 전라남도 해남군 송지면 땅끝마을에서 발견되었으며, 녹빛실사초(C. sachalinensis var. sikokiana (Franch. & Sav.) Ohwi)와 유사하나 총생하며 잎이 분백색인 특징으로 구분된다. 미기록 3분류군에 대한 기재, 도해, 사진 및 근연종과의 차이점을 검색표로 제시하였다.

      • KCI등재

        평창, 영월(강원도)의 석회암 지역 식물상

        남기흠 ( Gi Heum Nam ),김중현 ( Jung Hyun Kim ),김영철 ( Young Chul Kim ),김진석 ( Jin Seok Kim ),이병윤 ( Byoung Yoon Lee ) 한국환경생태학회 2012 한국환경생태학회지 Vol.26 No.1

        한국의 중부에 위치한 평창, 영월 지역은 석회암 지역이며 생물지리학적으로 매우 중요한 지역이다. 2010년 3월부터 10월까지의 조사로 평창, 영월 지역의 식물상을 밝혀 석회암 지역 식물 연구의 기초자료로 활용하고자 한다. 이 지역의 식물상은 134과 503속 1,010종 11아종 110변종 10품종 4잡종의 1,145분류군으로 확인되었다. 환경부 법적보호인 멸종위기야생식물은 7분류군이며, 한국고유종은 50분류군이었다. 식물구계학적특정식물은 238분류군으로 5등급 24분 류군, 4등급 30분류군, 3등급 60분류군, 2등급 45분류군, 1등급 79분류군으로 나타났다. 귀화식물은 82분류군이었으며, 본 조사지에서 다른 지역에 비해 특이하게 분포하는 식물은 53분류군이 확인되었다. 이 중 석회암 지역에서만 분포가 확인되는 식물은 35분류군이며, 격리되어 분포하는 북방계 식물은 15분류군, 해안성 식물은 3분류군이었다. Located in the middle part of the Korean peninsula, Pyeong-chang and Yeong-wol (Gangwon-do) areas are limestone regions that are important biogeographically showing the peculiar flora. In order to manage efficiently endangered and rare plant species, we have investigated flora of these above regions from March to October, 2010. The result of the investigation showed a total of vascular plants of 1,145 taxa; 134 families, 503 genera, and 1,010 species, 11 subspecies, 110 varieties, 10 forms and four hybrids. Among taxa investigated, endangered species designated by the law called ``Protection Law for Endangered wild fauna and flora`` were seven taxa, and 50 taxa were considered to be endemic to Korea. Based on the floristic degrees categorized by the specific distribution of plant species, 24 taxa revealed the floristic degree (FD) V, 30 for FD IV, and 60 for FD III, 45 for FD II and 79 taxa for FD I. The 82 taxa were identified to be naturalized. Of those species investigated in this survey, 53 taxa were identified as specific ones biogeographically as compared to flora of other terrestrial regions; 35 of calcicolous plants, 15 with distribution in the northern part of the Korean peninsula, three with coastal habitats.

      • KCI등재

        Chromosome number of Carex brevispicula (Cyperaceae), a sedge endemic to Korea

        정경숙,남기흠,정규영 한국식물분류학회 2023 식물 분류학회지 Vol.53 No.2

        Carex brevispicula (Cyperaceae) is endemic to Korea and is characterized by constricted achenes, short lateral spikes, and awned staminate and pistillate scales. The species classified in sect. Mitratae occurs throughout South Korea, perennating on mountains and/or rocky slopes under half shadow conditions. Meiotic chromosomes of the species were examined in this study, in which 33 meiotic cells from seven populations were found to be less than 2 µm long with non-constricted chromosomes (n = 34II). The stable chromosome number may be related to the narrow geographical distribution and/or distinct achene morphology. Further investigations of the distribution, morphological character variation, and chromosome characteristics should be conducted with closely related taxa to understand the derivation of the species and its endemism in Korea.

      • KCI등재

        Parasenecio pentaphyllaria (Asteraceae: Senecioneae), a new species of Parasenecio from Korea

        권민지,남기흠,조형준,김재영,정대희,정 선,문병철,정규영 한국식물분류학회 2023 식물 분류학회지 Vol.53 No.3

        Parasenecio pentaphylla, a new species of the genus Parasenecio from Mt. Ilwol- san, Ilwol-myeon, Yeongyang-gun, Gyeongsangbuk-do, Korea, is described and illustrated here. In Korea, this species has been recognized as P. adenostyloides, known to be a Japanese endemic species. However, it is clearly distinguished from P. adenostyloides by its involucre shape, the number of phyllaries, the number of florets per capitulum, and the ratio of the tube length to the throat length. A molecular phylogenetic analysis using the Internal Transcribed Spacer region also clearly indicated that P. pentaphyllaria was genetically distinct from P. adenostyloides. Therefore, it is recognized as an independent species, different from P. adenostyloides. The spe- cific epithet “pentaphyllaria” was given based on its characteristic of having five phyllaries.

      • KCI등재

        백령도 지역의 관속식물상

        김중현,남기흠,김선유,김진석,최지은,이병윤 한국자원식물학회 2013 한국자원식물학회지 Vol.26 No.2

        This study was carried out to investigate the flora of Baengnyeongdo (Isl.). The vascular plants which werecollected in 5 times (from Aug. 2011 and Nov. 2012) were identified as 732 taxa in total, including 124 families, 411 genera,647 species, 8 subspecies, 68 varieties, 7 forms and 2 hybrids. 193 of these taxa were first records for the region. In the floraof this area, the endangered plants designated and protected by the wildlife protection law, the Ministry of Environment,Korea were counted to two taxa. Korean endemics plants numbered 8 taxa, and 78 taxa of specially designated floristicregional indicator plants by the Ministry of Environment. And rare plants were identified as 20 taxa. Based on the list ofsouthern and northern limit of distribution plants, 30 taxa and 43 taxa of halophytes were recorded in the investigated area. The naturalized plants were identified as 92 taxa, and their naturalization ratio were found to be 12.5%, respectively. 본 연구는 백령도의 관속식물을 밝히고 주요 식물들의분포를 조사하였다. 2011년 8월부터 2012년 11월까지 총 5회에 걸쳐 수행되었다. 그 결과 관속식물은 124과 411속647종 8아종 68변종 7품종 2교잡종으로 총 732분류군이확인되었으며, 처음으로 밝혀진 분류군은 193분류군이었다. 이 중 환경부 지정 멸종위기야생식물은 2분류군, 한국고유종 8분류군, 식물구계학적 특정식물 78분류군, 희귀식물 20분류군이 조사되었다. 또한 남․북방계식물 30분류군,염생식물 43분류군이 발견되었다. 귀화식물은 92분류군으로 확인되었으며, 귀화율은 12.5%로 나타났다.

      • KCI등재

        한반도 석회암지대의 관속식물 목록

        김중현,남기흠,이승배,신수경,김진석 한국식물분류학회 2021 식물 분류학회지 Vol.51 No.3

        Limestone areas are sedimentary rock outcrops consisting of calcium carbonate created several hundreds of millions of years ago by calcium-secreting marine organisms and subsequently lifted above sea level by tectonic movement. Limestone areas support very high levels of endemic species of plants and are recognized as biodiversity areas with much biological information. The purpose of this study is to devise a strategy for the comprehensive conservation of the vegetation of limestone areas through analyses of the floristics and plant species compositions in ten limestone areas on the Korean Peninsula. The results of 153 field surveys from April of 2010 to October of 2016 identified 1,201 taxa in total, representing 1,096 species, 18 subspecies, 83 varieties, 2 forms, and 2 hybrids in 530 genera and 133 families. Among them, 55 taxa were endemic plants to Korea, and 38 taxa were red data plants. The floristic target plants amounted to 102 taxa, specifically 27 taxa of grade V and 75 taxa of grade IV. In all, 121 alien plants were recorded in the investigated area. Calciphilous plants amounted to 101 taxa, specifically 14 taxa of calciphilous indicator plants, 29 taxa of superlative most calciphilous plants, and 58 taxa of comparative more calciphilous plants. A cluster analysis showed a high degree of similarity between sites that are geographically adjacent with similar habitat environments. Limestone areas also supported groups distinct from those in non-limestone areas, demonstrating the specificity of limestone flora. Plant geography approaches therefore appear to be crucial to gain a better understanding of the level of biodiversity in limestone areas, not only at the interspecific but also at the intraspecific level. These results highlight the importance of protecting limestone habitats to preserve not only their interspecific but also the intraspecific diversity, which is highly threatened. 석회암지대는 수억만년 전 칼슘 분비 해양 생물에 의해 생성되고 탄산칼슘으로 구성된 퇴적암 노두이며, 지각 운동에 의해 해수면 위로 상승하였다. 석회암지대는 고유식물의 비율이 매우 높고 생물학적 정보가 많은 생물다양성 지역으로 알려져 있다. 본 연구는 10개 지역의 석회암지대에 대한 식물상과 식물 종조성의 조사를 통하여 석회암 식생에 안정적인 보전계획 수립을 위한 기초자료를 제시하고자 한다. 2010년 4월부터 2016년 10월까지 153회에 걸쳐 조사한 결과, 관속식물은 133과 530속 1,096종 18아종 84변종 2품종 2교잡종으로 총 1,202분류군이 확인되었다. 이 가운데 한반도 고유식물은 55분류군, 적색목록식물은 38분류군이었다. 식물구계학적 특정식물은 총 102분류군으로 V등급에 27분류군, IV등급에 75분류군이 포함되었다. 외래식물은 121분류군이었다. 호석회성 식물은 총 102분류군으로 지표종에 14분류군, 극선호종에 30분류군, 그리고 선호종에 58분류군이 포함되었다. 군집분석은 석회암지대 내에서 지리적으로 인접하고, 자생지 환경(하천지역)이 유사한 지역 간에 높은 유사도를 보여주었다. 또한 석회암지대는 인근지역의 비석회암지대와 구별되는 종조성을 갖는 것으로 나타나 석회암지대 식물상의 고유성과 특이성을 보여주었다. 식물지리학적 접근은 석회암지대 생물다양성의 수준을 잘 이해하기 위해 매우 중요하다. 이러한 결과는 석회암 생육지를 보호하고 그 상호 특이적 생물다양성뿐만 아니라 고도로 위협받는 종내 생물다양성 보존의 중요성을 강조한다.

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