• 제목/요약/키워드: Morphological part

검색결과 535건 처리시간 0.026초

우리나라에서 잔디혹응애(Aceria zoysiae: 신칭)에 의한 골프장 들잔디 피해 (Damage of Zoysiagrass by Zoysiagrass Mite, Aceria zoysiae in Korean Golf Courses)

  • 박대섭;이종호;조명래;김용선;김경덕;김종주;추호렬;이동운
    • Weed & Turfgrass Science
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    • 제1권4호
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    • pp.76-79
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    • 2012
  • 골프장에서 잔디혹응애에 의한 들잔디 피해와 형태적 특징을 조사하여 골프장 잔디관리의 기초자료를 제공하고자 연구를 수행하였다. 잔디혹응애는 경기도 포천에서 경남 진주까지 전국적으로 발생하고 있었으며 봄부터 가을까지 피해가 나타났다. 피해 받은 잔디는 엽의 한쪽면이 말리고, 응애는 말린 잎 안에서 가해하였다. 피해잔디의 말려진 부분은 황화 되었으며 골프장에서는 회색의 불규칙한 패치형 병반을 형성하고 있었다.

A Case of Chaunocephalosis by Chaunocephalus ferox (Digenea: Echinostomatidae) in an Oriental White Stork, Ciconia boyciana, in Korea

  • Choe, Seongjun;Lee, Dongmin;Park, Hansol;Jeon, Hyeong-Kyu;Lee, Youngsun;Na, Ki-Jeong;Park, Shi-Ryong;Eom, Keeseon S.
    • Parasites, Hosts and Diseases
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    • 제54권5호
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    • pp.659-665
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    • 2016
  • We intended to describe a case of chaunocephalosis and morphological characteristics of its causative agent, Chaunocephalus ferox, recovered from an oriental white stork, Ciconia boyciana, in the Republic of Korea. An oriental white stork was referred to the Wildlife Center of Chungbuk in Korea in February 2014 for severe depression with cachexia and it died the next day. At necropsy, the stomach was severely expanded and 7 thick-walled nodules were observed in the upper part of the intestine. Although the stomach was filled with full of foreign materials, the intestine was almost empty. The nodules were globular and total 9 flukes were recovered. They were $8,030-8,091{\mu}m$ in length and $3,318-3,333{\mu}m$ in maximum width. Because the flukes had bulbous forebody with short narrow subcylindrical hindbody, 27 collar spines, and vitelline follicles not reaching to the posterior end, the specimens were identified as being C. ferox. The cyst formation induced thickening of the intestinal wall with narrowing of the lumen that could have contributed to the gastric impaction to the death of the host. This is the first described case of chaunocephalosis and its causative agent C. ferox found from an oriental white stork in Korea.

한국산 생약으로부터 항암물질의 개발 (제 5 보) - 소엽의 부탄올 가용분획이 인체피부흑색종 세포에 미치는 세포독성작용 - (Development of Anticancer Agents from Korean Medicinal Plants. Part 5 - Cytotoxic Activity of the Butanol Soluble Fraction of Perilla frutescens against Human Skin Melanoma Cells -)

  • 이기남;신혁호;한두석;김영옥;최규은;곽정숙;백승화
    • 생약학회지
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    • 제28권4호
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    • pp.264-270
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    • 1997
  • This Study was carried out develop antitumor effect of the n-butanol soluble of fraction of Perilla frutescens on human skin melanoma cells. The antitumor activity of various fractions obtained form n-butanol soluble fraction of Perilla frutescens was evaluated in human skin melanoma cells. The antitumor activity of the n-butanol soluble fraction in human skin melanoma cells was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, neutral red (NR) assay and sulforhordamine B protein (SRB) assay of colorimetic assay methods. The light microscopic study was carried out to observe morphological changes of cultured human skin melanoma cells. These results were obtained follows; The fractions 5 and 6 of the n-butanol soluble fraction of P frutescens were shown significant antitumor activities. The number of human skin melanoma cells were decreased and tend to form cell cluster by treatment with actions 5 and 7 of the n-butanol soluble fraction of P. frutescens. The fraction 6 of the the n-butanol soluble fraction showed the highest antitumor activity on P. frutescens. These results suggest that the fraction 6 of the n-butanol soluble fraction of P. frutescens may be a valuable choice for the studies on the treatment of human skin tumors.

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부추속(부추과) 미기록 식물 1종: 갯부추 (An unrecorded species of Allium (Alliaceae) in Korea: A. pseudojaponicum Makino)

  • 최혁재;김윤영;고은미;장창기;오병운
    • 식물분류학회지
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    • 제36권1호
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    • pp.53-59
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    • 2006
  • 전라남도 여수시 거문도에서 발견된 부추속(부추과) 1분류군을 국내 미기록종으로 보고한다. 이 분류군은 지금까지 일본의 남부지방에만 분포하는 것으로 알려졌던 Allium pseudojaponicum Makino로서, 근연종인 산부추(Allium thunbergii G. Don)에 비해 윤이 나는 상록성의 잎, 화경에 측생하는 인경 및 2n=32의 염색체수 등의 특징으로 쉽게 구분된다. 국명은 생육지의 특성을 고려하여 '갯부추'로 신칭하였다. 이 분류군에 대한 형태적 특징을 기재하였고, 도해 및 생태 사진을 제시하였다.

언간에 나타나는 어기활용형에 대한 고찰 (On the base inflectional forms of Korean old vernacular letters)

  • 이현주
    • 동양고전연구
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    • 제56호
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    • pp.297-329
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    • 2014
  • 언간자료에는 '--'를 접사로 취하는 단어들 중에 어간의 일부가 된 '--'와 그에 뒤따르는 어미들이 생략되어 나타나는 경우가 빈번하게 나타난다. 이를 어기활용형이라 칭하고 언간에 나타나는 어기활용형의 기능 및 형대론적, 통사론적 제약을 살펴보았다. 제한된 시간 속에서 운필의 노력과 시간을 절약하기 위해 언간에서 독특하게 발달한 형식이 어기활용형이다. '-'구성에서 필수적인 내용은 'X'가 모두 가지고 있고 '--'와 뒤따르는 어미는 형식적인 기능만을 담당하기 때문에 어기 'X'만 남기고 후행성분은 과감히 생략하게 된 것이다. 어기활용형이 언어수행 상 나타나는 수의적인 언어현상이긴 하지만, 모든 조건에서 일어날 수 있는 것은 아니다. 가장 기본적인 문법적 기능만을 가지는 '-, -, -, -, -'가 쉽게 생략될 수 있음을 알 수 있었다. 그리고 언간자료에서 어기활용형을 구성하는 어기는 [+동작성]이든 [-동작성]이든 모두 서술성을 갖는다는 공통점이 있다. 이 시기의 파생접사 '--'는 어휘적 의미는 전혀 갖지 못하고 형식적 기능만을 갖고 있다. 이러한 이유로 '서술성어기+--'구성은 언어수행 면에서 어떤 조건만 주어지면 파생접사 '--'가 쉽게 생략될 수 있었다.

한국 동남부 울산 지역에서 발견되는 화산재층의 산상과 동정 (Occurrence and Identification of Tephra Layers found in the Ulsan area, Southeastern Korea)

  • 김정빈;김영석;임현수
    • 한국지구과학회지
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    • 제42권1호
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    • pp.55-64
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    • 2021
  • 화산재연대학은 화산재층을 지질학적 사건과 대비하거나 연대를 측정하는 연구이다. 화산재층은 건층으로 사용될 수 있기 때문에 제4기 퇴적층의 연대측정에 매우 중요하다. 이번 연구에서는 울산의 산하동과 정자동 지역에 분포하는 해안단구 퇴적층의 상하부에서 두 종류의 화산재가 발견되었다. 화산유리의 형태학적 특징과 굴절률, 주원소조성과 상관계수 분석을 통해 상부와 하부의 화산재는 각각 약 25 ka 전에 분출한 AT 화산재와 약 105-110 ka 전에 분출한 Ata 화산재로 밝혀졌다. Ata 화산재는 한국의 육상퇴적층에서 공식적으로 처음 보고되는 것이다. 이번 연구결과는 향후 한국의 제4기 고기후와 고환경 및 한국 동남부의 활성단층 연구에 큰 도움이 될 수 있을 것으로 기대된다.

라이더 재킷의 디자인 특성을 이용한 패션디자인 제안 (A proposal for fashion design using the design characteristics of rider jacket)

  • 박한힘
    • 한국의상디자인학회지
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    • 제22권4호
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    • pp.115-125
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    • 2020
  • Rider jackets were once reserved for military uniforms but have become an important styling item in recent fashion trends. The design characteristics of the rider jacket are rooted in symbolism, and the image associated with a rider jacket is in line with the challenging of authority and being a member of the rebellious youth subculture. Usually, young people with anti-social tendencies wore jackets, and some styles were used as a medium to express their emotional homogeneity, and they received favorable responses as the items represented them. The design characteristics of a rider jacket can be largely divided into resistance against the older generation, violence, challenging cultural norms, sexuality, and resistance, as well as embodying violent characteristics, including strength, courage. and male chauvinism. The reason for the development of these challenging characteristics are disparagement and anger of the lower class, who were excluded from mainstream society. Rider jackets can be viewed negatively due to the kind of message it is conveying against mainstream society. Among the sexual features were leather pants, short-length leather rider jackets, glossy metal accessories, and belt buckles, which also highlighted gay and decadent images that came to be associated with the jackets. The drapery created various kinds of wrinkles according to the way of dressing, and it had beautiful expressiveness while serving to express the body more beautifully. Drapery can be classified according to the aesthetic characteristics or expression techniques, and if the type of drapery is classified according to the morphological characteristics, it can be classified into variable and fixed structures, depending on whether the part to which the drapery is applied is fluid or not. In other words, it depends on the dressing method or the intention, and if the drapery technique is directly applied to the garment or is attached to the form. This fashion design proposal may have the greatest significance in that it sought to propose a new style incorporating a drapery technique with a strong feminine image to a rider jacket, which traditionally was associated with a masculine image.

'총각김치' 명칭의 시작과 확산, 그리고 보편화 과정 고찰: 음식문화 콘텐츠 관점을 연계하여 (A Study on the Origin, Spread, and Universalization of the Name 'Chonggak kimchi': In Connection with the Food Culture Content Point of View)

  • 김홍렬
    • 한국식생활문화학회지
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    • 제37권5호
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    • pp.418-428
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    • 2022
  • Research on the birth (起源) and names (語源) of foods such as kimchi is important to understand traditional food culture. kimchi, an 'add flavored, fermented, pickled, vegetable food' was initially prepared with the simple purpose of increasing storage capabilities, but later, through a complex process of change, morphological diversification occurred. In addition to the basic name of 'kimchi', each variety has its unique name and history. This study was conducted through qualitative research using various research methods, such as oral records and interviews, as well as investigation of data from literature, including ancient literature, modern cookbooks, newspapers, magazines, papers, and videos. The study sought to investigate the context and the meaning of the name Chonggak kimchi. In addition, it is a compilation of how the name spread through the ages and evolved to its current name. The name Chonggak kimchi did not exist during the Joseon Dynasty and Japanese occupation and first appeared in the records in the late 1950s. Nevertheless, the original name of 'Altarimu kimchi' evolved and finally became a part of the standard Korean language (標準語) in 1988. In the process of the name spreading and becoming popular, the movie "Chonggak kimchi (1964)," starring Shin, S.I., and Eom, A.R. played a significant role. It was also confirmed that this was a meaningful and valuable case of contentization of traditional food culture, regardless of the intention behind the same.

영산강에 서식하는 참중고기 Sarcocheilichthys variegatus wakiyae의 난발생 및 자치어 형태발달 (Morphological Development of Eggs, Larvae and Juveniles of the Sarcocheilichthys variegatus wakiyae in Yeongsangang River, Korea)

  • 박재민;한경호
    • 한국어류학회지
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    • 제34권1호
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    • pp.16-24
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    • 2022
  • 본 연구는 참중고기 Sarcocheilichthys variegatus wakiyae의 난발생 및 자치어 형태발달을 관찰하여 초기생활사 특징을 밝히고 유연종과 난 및 부화자어 크기, 후기자어 및 치어기 이행시기를 비교 논의하고자 실시하였다. 연구에 사용된 친어는 전남 담양군의 영산강 일원에서 채집하였고 호르몬(Ovaprim)을 주사하여 산란을 유도하였다. 산란량은 평균 31±3.5개였고, 성숙란은 원형이었다. 성숙란의 크기는 평균 2.40±0.05 mm였다. 부화시간은 수온 22℃에서 230~240시간이 소요되었다. 부화자어 크기는 평균 10.7±0.19 mm였고, 부화 후 3일 평균 크기 12.0±0.13 mm일 때 척추 끝부분이 45°로 완전히 휘어졌고 후기자어기로 이행하였다. 부화 후 11일째 평균크기 14.6±0.13 mm일 때 모든 지느러미의 기조 수(등지느러미 iii7, 뒷지느러미 iii6, 배지느러미 i7)가 정수에 달하면서 치어기로 이행하였다.

DNA 바코드 분석을 통한 소계(小薊) 및 대계(大薊) 기원식물 감별과 종간 유연관계 분석 (Molecular Authentication and Phylogenetic Analysis of Plant Species for Breeae and Cirsii Herba based on DNA barcodes)

  • 문병철;이영미;지윤의;최고야;천진미;김호경
    • 대한본초학회지
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    • 제28권3호
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    • pp.75-84
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    • 2013
  • Objectives : The origin of Breeae Herba (So-gye) and Cirsii Herba (Dae-gye) is differently prescribed in Korean and Chinese modern pharmacopoeia. Since the similar morphological characteristics and chaotic plant names, moreover, the aerial part of Carduus crispus have been used as the Cirsii Herba. To develop a reliable method for correct identification of these herbal medicines and to evaluate the genetic relationship of these closely related plant species, we analyzed sequences of DNA barcode regions. Methods : Thirty-one samples of 6 medicinal plants (B. segeta, B. setosa, C. japonicum var. maackii, C. setidens, C. chanroenicum, and C. crispus) were collected from different habitate and nucleotide sequences of DNA barcode regions (rDNA-ITS, matK, and rbcL) were analyzed after amplification using appropriate primers reported in previous studies. The nucleotides of species-specific authentic marker and phylogenetic relations were estimated based on the entire sequences of DNA barcodes by the analysis of ClastalW and UPGMA, respectively. Results : In comparative analysis of DNA barcode sequences, we obtained specific nucleotides to discriminate the medicinal plant of Breeae/Cirsii Herba in species level and evaluated the phylogenetic relationship of these species. Futhermore, we identified distinct marker nucleotides enough to authenticate respective species. These sequence differences at corresponding positions were avaliable genetic markers to determine the botanical origins of Breeae Herbal as well as Cirsii Herba. Conclusions : These marker nucleotides would be useful to identify the official herbal medicines by providing of definitive information that can identify each plant species and distinguish from unauthentic adulterants and substitutes.