• Title/Summary/Keyword: Man-chul

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IEEE 802.6 DQDB MAN의 동향 분석

  • Hong, Seung-Ho;Kim, Meong-Seop;Kim, Jin-Chul
    • Electronics and Telecommunications Trends
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    • v.5 no.3
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    • pp.32-42
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    • 1990

  • 정보화 요구의 확산에 따라 최근에 와서 MAN(Metropolitan Area Network)의 관심도가 고조되고 있다. 본 고에서는 IEEE 802.6에서 표준화를 추진하고 있는 DQDB(Distributed Queue Dual Bus) MAN프로토콜의 구조에 대하여 간략히 서술하였고, 현재 표준화의 진척상황 및 어떠한 문제점들이 논의되고 있는지 알아보았으며, 또한 MAN이 충분한 서비스를 제공하기 위하여 앞으로 어떠한 사항들이 해결되어야 할 것인가에 대하여 언급하였다.

  • https://doi.org/10.22648/ETRI.1990.J.050303 인용 PDF

A new Atractylodes spp. hybrid cultivar 'Manchul' with high yielding and disease tolerance

  • Jeong, Jin-Tae;Chinreddy, Chinreddy;Lee, Yun-Ji;Ha, Bo-Keun;Kim, Mi-Ran;Lee, Sang-Hoon;Chang, Jae-Ki;Lee, Jeong-Hoon;Park, Chun-Geon
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.162-162
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    • 2017

  • Atractylodes japonica and Atractylodes macrocephala belongs to Atractylodes genus and theirs roots are used as 'Baek-chul'(White atractylodes rhizome) in Korea Pharmacopoeia. 'Baek-chul' widely used in traditional herbal remedies in Asia. Concurrently, the 'Baek-chul' demand enormously increased in the market due to the growing interest in favoring health benefits but it is depend on import from China. Thus we conducted breeding research to solve the problems associated with domestically cultivated 'Baek-chul' such as low productivity and low disease tolence. We crossed A. japonica (female parent) and A. macrocephala (male parent) in the greenhouse in September 2000. the next season 119 crossed line seeds were collected and germinated in the green house. Among them we selected the good lines in the same season. then conducted replicated yield trials (RYT) in 2014 to local adaptability test (LAT) in 2015-2016. The results showed that the 'AJM16' line has beneficial charactersitcs like, increased plant height, large rhizome diameter, narrow leaf width compared with a 'Sang-chul' (check cultivar) and varied flower color from A. japonica (female parent). The line 'AJM16' was also exhibited decreased anthracnose symptoms(Colletotrichum gloeosporides Penz.). Simultaneously the root yield of AJM16 was 2,409 kg per are, which was increased 130% higher yield compared to 'Sang-chul' (check cultivar) at three various regions from 2015 to 2016. Therefore, we named AJM16 as new cultivar 'Man-chul'. According the results, we have developed a new Atractylodes spp. hybrid cultivar 'Macn-chul' with high yielding and disease tolerance by National Institute of Horticulture and Herbal Science, RDA, in 2016.

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