• Title/Summary/Keyword: 외부형태

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Studies on the Intraspecific Variations on Geological Distributions of Acusta despecta sieboldiana in Korea (한국산 달팽이 ( Acusta despecta sieboldiana) 의 지리적 분포에 따른 종내 변이에 관한 연구)

  • 이준상;권오길
    • The Korean Journal of Malacology
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    • v.12 no.1
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    • pp.19-31
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    • 1996
  • 국내 11개 지역(경기도 옹진군 덕적도, 경기도 의정부시 소요산, 강원도 춘천시, 충청남도 태안군 안홍, 경상북도 울릉군 울릉도, 전라북도 부안군 변산, 전라남도 신안군 홍도, 흑산도 비금도, 진도, 제주도)에서 채집된 달팽이 (A. despecta sieboleiana)를 대상으로 외부형태 분석과 동위효소를 검출하여 각 지역 집단간의 형태적, 유전적 유연관계와 변이 정도를 연구한 결과는 다음과 같다. 외부형태에 의한 집단간 유연관계는 안홍과 덕적도집단(average taxonomic distance, D=0.358)이 형태적으로 가장 유사한 집단으로 나타났다. Polyacrylamide gel을 사용하여 11가지의 동위효소를 검출한 결과 AKP, ACP, AO, EST, GPD, HBDH, LDH, SDH, XDH의 동위효소에서 유전적 다형현상이 나타났다. 전 집단의 평균 다형형의 빈도는 59.19%이며 이형접합자 빈도는 0.263이고 각 집단의 유전적 차이치는 춘천과 울릉도 집단이 0.066(genetic distance)으로 가장 높은 유사성을 보였다. 지리적 분포에 따른 외부형태 변이와 유전적 변이와의 관계는 유의성이 없었다.

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Comparative studies on the Hanabusaya asiatica and its allied groups 1. External morphology and anatomical characters (금강초롱꽃 (Hanabusaya asiatica)과 근연분류군의 비교연구 1. 외부형태 및 해부학적 형질)

  • 유기억
    • Korean Journal of Plant Resources
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    • v.8 no.3
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    • pp.223-235
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    • 1995
  • Comparative studies on external morphology and anatomical characters were conducted understand the interspecific relationships and possibly to identify the position of Hanabusaya asiatica as an endemic genus among 4 genera and 9 species in H. asiatica and its allied groups. Such morphological characteristics as root shape, leaf size, presence or absence of wings in petiole, corolla and calyx shape, and inflorescence and stigma shape were useful qualitative characters. The morphology of stem, peduncle, calyx lobe, leaf, petiole, and ovary were also good characters to be included in this identification study. In the anatomical observations in these organs, projecting degree of epidermis and number of projecting area rather than cross-sectioned internal structures were found to be valuable index for the classification among species. External morphology and anatomical characters support the position of H. asiatica as an endemic genus very well. Known as the most important external characters to taxonomists(Fedorov, 1957: Nakai, 1952: Hong, 1983), leaf arrangement, inflorescence, and corolla shape were also preven to be very useful characters to identify the genera and species in the H. asiatica and its allied groups.

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Robust Deformation of Cavity Objects using Shape-Preserving Spring (형태유지 스프링을 이용한 cavity 객체의 안정적 형태 변형)

  • 최유주;김명희
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.10b
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    • pp.727-729
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    • 2003
  • 본 논문에서는 외부의 힘에 의한 cavity 변형 객체의 안정적 형태 변형을 표현하기 위하여 형태유지 스프링을 이용한 변형 모델링 기법을 제안한다. 일반적으로 위나 풍선과 같은 cavity 변형객체는 전체 구성 노드의 수를 줄이기 위하여 표면 메쉬 구조로 모델링된다. 이 경우. 표면의 인접 노드만이 감쇠(damping) 스프링으로 연결되고, 모델의 체적정보의 부재로 인하여, 외부 힘이 일정시간 동안 지속적으로 주어지는 경우, 객체의 형태변형이 왜곡되고. 외부 힘이 제거된 후에도 초기 형태로의 복원이 불가능해진다. 본 논문에서는 전형적인 표면 메쉬 기반 변형 모델링 기법을 개선하기 위하여 형태 유지 스프링을 이용하여 체적 정보를 추가함으로써, 변형의 불안정성을 제거하고, 안정적인 초기형태로의 복원이 이루어지도록 하였다.

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A taxonomic study of the genus Dioscorea L. (Dioscoreaceae) in Korea based on morphological characters (한국산 마속(마과)의 외부형태형질에 의한 분류학적 연구)

  • Chung, Dae Hee;Chung, Gyu Young
    • Korean Journal of Plant Taxonomy
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    • v.45 no.4
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    • pp.380-390
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    • 2015
  • The morphological characters were observed in six taxa in the genus Dioscorea of Korea (D. polystachya, D. japonica, D. nipponica, D. quinqueloba, D. tenuipes, and D. dokoro). The underground structure and the formation of bulbil were useful characters for separating sect. Enanatiophyllum from sect. Stenophora. The important characters for discriminating taxonomic entities were as follows: the position of the anther and the shape of the pistil in the microstructural characters, including the protuberance of the base of the petiole, the shape and color of the flower, the shape of the fruit, and the shape of the seed wing. Based on the results, a key to Korean Dioscorea is provided and the distribution of these species in Korea is described.

Observation of the Adults and Eggs of Two Species of the Family Perlidae(Plecoptera) to Korea (강도래과(강도래목) 2 종에 대한 성충 및 란의 외부형태 관찰)

  • 나철호;백순기;조영관
    • Animal Systematics, Evolution and Diversity
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    • v.7 no.1
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    • pp.101-110
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    • 1991
  • Two species of Perlidae, Oyamia coreana and Kiotina decorata which were collected in mountain valley of the Chonnam, Chonguk and Kyongnam provinces, south Korea are reported for the first time from Korea, with description of the external morphology of their eggs by SEM.

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한국의 진딧물류

  • Baek, Un-Ha
    • The Science & Technology
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    • v.2 no.3 s.7
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    • pp.38-48
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    • 1969
  • 서론 외부형태 내부형태 발생소장 생활환 날개의 출현기구 성의 결정 개미와의 관계 기주식물의 반응 식물바이러스의 매개 진딧물의 천적 방제법 채집법 표본제작법

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제언 - 사업장 내부에서 보건관리를 강화해야 한다

  • Gwon, Yeong-Jun
    • 월간산업보건
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    • s.366
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    • pp.4-7
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    • 2018
  • 산업보건사업은 사업장 외부 민간 기관 중심으로 이루어지고 있으며, 대부분 사업장에서는 전문산업보건기관에 위탁형태로 보건관리가 이루어진다. 민간기관의 수익사업으로 사업장 외부에서 제공되는 위탁 운영형태는 자본과 인력이 취약한 초기에는 빠르게 산업보건사업이 자리 잡을 수 있었다.

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Systematic study of Korean Asparagus L. based on morphology and nuclear ITS sequences (외부형태와 ITS 염기서열에 기초한 한국산 비짜루속 식물의 분류학적 고찰)

  • Cho, Seong-Hyun;Kim, Young-Dong
    • Korean Journal of Plant Taxonomy
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    • v.42 no.3
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    • pp.185-196
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    • 2012
  • Morphological and geographical examinations as well as phylogenetic analyses using ITS sequences were performed for Asparagus L. in Korea. A total of five species of Asparagus were confirmed to be distributed in South Korea. The shape of cladophylls, length of pedicels, and shape of perianth were considered to be important characteristics for the identification of Koran Asparagus species. A monophyly of each species was evident in the ITS phylogenetic trees in which multiple accessions (5 to 24, depending on species) represented each of the five Korean species. A. rigidulus Nakai, once considered conspecific to A. schoberioides Kunth, formed a distinct lineage in the ITS trees. Pedicels of A. rigidulus, which is distributed mainly in coastal areas, were about two times longer than those of A. schoberioides occurring in inland areas, suggesting that they should be treated as distinct taxa.

Taxonomic position of Cymopterus melanotiligia (H. Boissieu) C.Y. Yoon based on morphological and anatomical characters (외부형태 및 해부학적 형질에 의한 큰참나물의 분류학적 위치)

  • Yoon, Chang-Young
    • Korean Journal of Plant Taxonomy
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    • v.31 no.3
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    • pp.253-265
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    • 2001
  • Cymopterus melanotilingia (Apiaceae) was reviewed by external morphology and cross-section of leaf-margin and mericarp, and the taxonomic position of species and genus was reexamined. Based on these results, the description and adistribution map of C. melanotiligia were obtained. The leaf-margin forms a collenchymatous ridge by projecting toward the lower part. One mericarp has 2-lateral ribs and 2-intermediate ribs and the other mericarp has 2-lateral ribs and 1-dorsal rib, suggesting each of them is asymmetric. These characters show that this species does not belong to the genus Ostericum s.s., but should be treated as the genus Cymopterus.

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The Morphological Study of Saussurea chabyoungsanica (자병취(Saussurea chabyoungsanica Im)의 외부형태학적 연구)

  • 오영주;백원기;유기억;이우철;김성필
    • Korean Journal of Plant Resources
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    • v.16 no.3
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    • pp.194-199
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    • 2003
  • Saussurea chabyoungsanica was recorded in new species by Lim hyoung tak in 1997. In order to understand the entity of new species, we investigated the new distribution sites, general morphological characters, the width of variation among regional groups. S. chabyoungsanica were located Manduckbong, Mt. Sukbyoung, Mt. Duckhang, and Sukgaejae in ridgeline of the Taebaek mountains. These sites are typical limestone zones of Korea. As a result of PCA analysis for external morphology of S. chabyoungsanica and S. neoserrata, S. neoserrata group was distinctly discriminated from S. chabyoungsanica group. And it was considered that the characters of leaf, corolla and involucral bract were major factors of cumulative rate. And also, through the analysis of external morphology of S. chabyoungsanica by region, Mt. Sukbyoung group was discriminated from other groups.