• 제목/요약/키워드: new taxonomy

검색결과 1,028건 처리시간 0.028초

동물바이러스의 새로운 분류 (New classification of animal viruses by the International Committee on Taxonomy of Viruses)

  • 장형관;송희종
    • 한국동물위생학회지
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    • 제28권1호
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    • pp.49-69
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    • 2005
  • More than 30 years have elapsed since the first report of the International Committee on Taxonomy of Viruses (ICTV) was published in 1971. Since that publication, the ICTV recognizes about 1,550 virus species, but some 30,000 virus strains and isolates are being tracked by virologists in different fields of biology. The ICTV is the 'international court' of experts that rules on names and relationships of all virus, but only to the level of species. Virus taxonomy is changing rapidly, with changes ranging from the trivial(use of italics for species names) to profound reorganization driven by the explosion of sequence information. The universal system of viral taxonomy now accepts Linnean-like classification at the levels of order, family, subfamily, genus, and species. The suffix '-virales' identifies an order, Families are identified by the suffix '-viridae' subfamilies are identified by the suffix '-virinae', and genera are identified by the suffix '-virus'. The importance of distinguishing subspecies, strains, and isolates in vaccine development, diagnostics, etc. is recognized, but these lower levels are not formally classified by ICTV. This paper mainly introduces taxonomy and classification of animal viruses on the basis of the seventh report of the ICTV edited by Van Regenmortal et al. in 2000.

Isolation, Characterization and Numerical Taxonomy of Novel Oxalate-oxidizing Bacteria

  • Sahin, Nurettin;Gokler, Isa;Tamer, Abdurrahman
    • Journal of Microbiology
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    • 제40권2호
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    • pp.109-118
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    • 2002
  • The present work is aimed at providing additional new pure cultures of oxalate utilizing bacteria and its preliminary characterization for further work in the field of oxalate-metabolism and taxonomic studies. The taxonomy of 14 mesophilic, aerobic oxalotrophic bacteria isolated by an enrichment culture technique from soils rhizosphers, and the juice of the petiole/stem tissue of plants was investigated. Isolates were characterized with 95 morphological, biochemical and physiological tests. Cellular lipid components and carotenoids of isolates were also studied as an aid to taxonomic characterization. All isolates were Gram-negative, oxidase and catalase positive and no growth factors were required. In addition to oxalates, some of the strains grow on methanol and/or formate. The taxonomic similarities among isolates, reference strains or previously reported oxalotrophic bacteria were analysed by using the Simple Matching (S/ sub SM/) and Jaccard (S$\_$J/) Coefficients. Clustering was performed by using the unweighted pair group method with arithmetic averages (UPGMA) algorithm. The oxalotrophic strains formed five major and two single-member clusters at the 70-86% similarity level. Based on the numerical taxonomy, isolates were separated into three phenotypic groups. Pink-pigmented strains belonged to Methylobacterium extorquens, yellow-pigmented strains were most similar to Pseudomonas sp. YOx and Xanthobacter autorophicus, and heterogeneous non-pigmented strains were closely related to genera Azospirillum, Ancylobacter, Burkholderia and Pseudomonas. New strains belonged to the genera Pseudomonas, Azospirillum and Ancylobacter that differ taxonomically from other known oxalate oxidizers were obtained. Numerical analysis indicated that some strains of the yellow-pigmented and nonpigmented clusters might represent new species.

교육목표분류학에 의한 정보활용과정모형의 재구조화에 관한 연구 (Study on the Restructure of Information Literacy Process Based on Taxonomy Educational Objectives)

  • 이병기
    • 한국도서관정보학회지
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    • 제41권2호
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    • pp.107-126
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    • 2010
  • 교육은 목적(목표) 달성을 위해서 의도적이고, 계획적으로 학생을 변화시키는 과정이다. 따라서 초 중등학교의 현장에서는 교육목표를 매우 중요하게 다루고 있다. 이에 블룸은 1956년에 교육목표를 쉽게 설정할 수 있도록 인지적 영역, 정의적 영역, 심리 운동적 영역으로 구분하여 유목화한 교육목표분류학을 창안하였다. 1990년대 이후에는 21세기 교수-학습 이론을 반영하고, 블룸의 교육목표분류학이 갖는 문제점을 보완하고자 앤더슨과 크래스 홀, 마자노 등이 새로운 교육목표분류학을 제시하였다. 블룸, 앤더슨과 크래스홀 및 마자노 등이 제시한 교육목표분류학은 정보와 정보 처리의 과정을 다루고 있다는 점에서 정보활용과정 모형과 밀접하게 관련되어 있다. 이에 본 연구에서는 교육목표분류학과 대표적인 정보활용과정모형인 Big6 Skills을 상호 비교, 분석하여 정보활용과정모형을 재구조화하였다.

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A new species and three new records of tribe Tritomini (Coleoptera: Erotylidae) in Korea

  • Jung, Boo Hee
    • International Journal of Industrial Entomology and Biomaterials
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    • 제39권1호
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    • pp.29-33
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    • 2019
  • A new species, Tritoma gangwonensis sp. nov., is described. Also three species - Rhodotritoma fitlva (Reitter, 1879), Triplax discicollis Lewis, 1887 and Triplax signaticollis Reitter, 1879 - are reported for the first time in Korea. A description and redescriptions for each species, photographs of adults and illustrations of diagnostic characters are provided.

Streptomyces melanosporofaciens가 생산하는 새로운 항생물질 I. 생산균의 분류 . 동정 (New Antibiotics Produced by SEreptomyces mekmosporofaciens I. Taxonomy of the producing microorganism)

  • 김시관;김상석;김창한
    • 한국미생물·생명공학회지
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    • 제18권6호
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    • pp.624-632
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    • 1990
  • 새로운 phthalic acid 유도체 및 염기성 마크로라이드 항생물질을 생산하는 strain 88-GT-161은 numerical taxonomic data base에 의거 Streptomyces melanosporofaciens로 동정되었으나, 139 단위 특성 중 4가지 단위에 있어. S.violaceoniger 혹은 S.violaceusniger로 대표되는 cluster No.32에 속하는 6균주의 공통된 특성과 분명히 다른 특성을 나타냈다. 따라서 본 논문에서는 strain 88-GT-161의 분류. 동정학적 특성에 대하여 보고하고자 한다.

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한국산 알락진딧물아과의 1신종과 2미기록종(진딧물상과: 동시목) (New and Little Known Species of Subfamily Drepanosiphinae from Korea (Drepanosiphidae: Aphidoidea: Homoptera))

  • 박희천;안현숙
    • 한국동물학회지
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    • 제37권3호
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    • pp.297-303
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    • 1994
  • A new species belonging to the unrecorded genus Sinishivophis Zhang, 1982, Sinn'shiuaphis korean n, sp. is described and two unrecorded species of Drepanosiphinae, Pteroca leis (Recticallis) alnijaponicae (Matsumural, and Tinocalfis tokochihoensis (Hisuchi) are reported from Korea.

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A Taxonomy of Location Management in Mobile Ad Hoc Networks

  • Galluccio, Laura;Palazzo, Sergio
    • Journal of Communications and Networks
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    • 제6권4호
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    • pp.397-402
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    • 2004
  • Location management is difficult in ad hoc networks due to many features such as the lack of a wired infrastructure, the scarce energy, memory and processing capabilities of nodes, and nodes’ movement which leads to a dynamic topology. These characteristics make the location management schemes designed for mobile cellular networks inefficient for ad hoc networks. New solutions for location management have therefore been proposed in the literature in the recent past. In this paper, a taxonomy of location management strategies is presented; some of the more interesting approaches proposed in the literature are critically discussed, highlighting their advantages and disadvantages.