• 식물분류학회지
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• 제45권2호
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• pp.136-144
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• 2015

원기재문과 기준표본을 근거로 애기황새냉이(Cardamine manshurica (Kom.) Nakai)의 분류학적 실체와 형태적 특성을 재검토하였다. 그 결과, 애기황새냉이는 유럽에 분포하는 좀냉이(C. parviflora L.)와는 다른 분류군으로, 형태학적으로 황새냉이(C. flexuosa With)와 유사하나, 꽃과 열매의 크기가 작고 개화기가 빠른 특징에 의해 황새냉이를 비롯한 근연분류군과 종 수준에서 명확하게 구분되었으며, nrDNA를 이용한 ITS 구간을 이용한 분자생물학적 분석 결과에 의해서도 지지되었다. 따라서 본 분류군을 종으로 처리하는 것이 타당하다고 판단하였고, 학명은 C. manshurica (Kom.) Nakai를 정명으로 하였으며, 국명은 황새냉이보다 키가 작고 꽃이 소형인 특징에 기인하여 '애기황새냉이'를 채택하였다.

• 식물분류학회지
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• 제40권1호
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• pp.43-49
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• 2010

원기재문과 기준표본을 근거로 Impatiens furcillata의 분류학적 실체와 형태적 특성을 재검토하였다. 그 결과, I. furcillata는 줄기 및 화경에 털이 없고, 화경은 아래로 처지며, 꽃은 홍백색인 특징을 가져 다른 한국산 물봉선속의 분류군들과 명확히 구분되었다. 특히, 이와 동일한 형태적 특성을 가지는 I. hypophylla var. koreana (처진물봉선)와 I. kojeensis (거제물봉선)는 I. furcillata의 이명으로 처리하였다. 또한 I. furcillata의 국명은 '산물봉선' 대신 '처진물봉선'으로 변경하였다.

• 한국지반환경공학회 논문집
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• 제2권1호
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• pp.5-13
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• 2001

본 논문의 목적은 율촌 복합화력발전소 부지에 대한 지지력 산정 및 지반 특성 파악을 위한 공내재하시험의 결과를 분석하는 것이다. 율촌 복합화력발전소 부지는 인근의 야산 토취장에서 매립토를 채취 운반하여 강제치환공법으로 성토하였으며, 지질은 상부로부터 산토, 준설매립해성점토, 실트집모래, 원지반해성점토층, 풍화대, 풍화암, 연암의 순으로 존재한다. 공내재하시험은 해성점성토층을 제외한 토층에 대하여 토층의 특성에 따라 각각 다른 크기의 Probe와 Membrane을 사용하여 수행하였으며, 콘시험과의 상관성, 내부 마찰각과의 관계 및 토질 특성을 파악하였다.

• Animal Systematics, Evolution and Diversity
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• 제36권3호
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• pp.240-250
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• 2020

Member of the genus Tobrilus Andrássy, 1959, which belongs to Tobrilidae Filipjev, 1918, are known as free-living nematodes in freshwater habitat. This genus was previously unknown from Korea. Five Tobrilus species are here reported for the first time from Korea: Tobrilus aberrans (Schneider, 1925), Tobrilus diversipapillatus (Daday, 1905), Tobrilus gracilis (Bastian, 1865), Tobrilus longus (Leidy, 1851), and Tobrilus wesenbergi (Micoletzky, 1925). Specimens were collected from sediments of the Nakdong River in Korea. Morphological characters and measurements of the specimens generally agree with the original descriptions of Tobrilus species, except for some differences that can be attributed to intraspecific variation among populations(e.g., nerve ring position [% pharynx] and reproductive length). Each species can be distinguished from other members of the genus by specific characters (e.g., cephalic setae length and position, buccal cavity and pocket shape, vulva position, degree of development of reproductive system, and tail length and shape). Here, five species in the genus Tobrilus are fully redescribed and illustrated using optical microscopy images. DNA barcode sequence information (the D2-D3 region of 28S rDNA) is also provided for molecular species identification.

• Animal Systematics, Evolution and Diversity
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• 제36권3호
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• pp.251-257
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• 2020

The genus Plectus Bastian, 1865 represents a group of free-living freshwater nematodes belonging to the family Plectidae Örley, 1880. However, only one species has been reported thus far from Korea. Plectus aquatilis Andrássy, 1985 and Plectus cirratus Bastian, 1865 are reported for the first time from Korea, from sediments collected from the Nakdong River. Plectus aquatilis is distinguished from other Plectus species by its three longitudinal alae in the lateral field, thin and directed cephalic setae, continuous lip region (head not set-off), and rectangular shaped tail. Plectus cirratus is distinguished from other Plectus species by its large body, two longitudinal alae in the lateral field, larger stoma, and longer tail. Morphological characters and measurements of the specimens generally agree with the original descriptions of Plectus species. Here, the morphological characters (detailed morphometrics) of two species in the genus Plectus are fully redescribed and illustrated using optical microscopy. DNA barcode sequence information from the 18S rDNA gene is also provided for molecular species identification and compared with sequences from other Plectus species available on GenBank.

• 식물분류학회지
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• 제39권2호
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• pp.100-106
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• 2009

한국산 대극속 3분류군에 대한 외부형태 형질과 학명을 재검토하였다. 줄기의 생장양상, 잎의 배열, 부속체의 유무, 자방 털의 유무, 종자의 형태 및 종부의 유무 등이 분류군들을 식별하는데 유용한 형질임이 확인되었다. 외부형태 형질, 기준표본 및 원기재문 등에 근거하여 낭독, 큰땅빈대 및 애기땅빈대의 정명은 E. fischeriana, E. hypericifolia 및 E. maculata로 밝혀졌으며, 정확한 종 동정을 위해 검색표를 제시하였다.

• Nuclear Engineering and Technology
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• 제53권8호
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• pp.2753-2760
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• 2021

This paper proposes using sodium-cooled fast reactor technologies for use in hydrogen vapor methane (SMR) modification. Using three independent energy rings in the Russian BN-600 fast reactor, steam is generated in one of the steam-generating cycles with a pressure of 13.1 MPa and a temperature of 505 ℃. The reactor's second energy cycles can increase the gas-steam mixture's temperature to the required amount for efficient correction. The 620 ton/hr 540 ℃ steam generated in this cycle is sufficient to supply a high-temperature synthesis current source (700 ℃), which raises the steam-gas mixture's temperature in the reactor. The proposed technology provides a high rate of hydrogen production (approximately 144.5 ton/hr of standard H₂), also up to 25% of the original natural gas, in line with existing SMR technology for preparing and heating steam and gas mixtures will be saved. Also, exergy analysis results show that the plant's efficiency reaches 78.5% using HTR heat for combined hydrogen and power generation.

• Genomics & Informatics
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• 제17권2호
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• pp.17.1-17.3
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• 2019

Text mining has become an important research method in biology, with its original purpose to extract biological entities, such as genes, proteins and phenotypic traits, to extend knowledge from scientific papers. However, few thorough studies on text mining and application development, for plant molecular biology data, have been performed, especially for rice, resulting in a lack of datasets available to solve named-entity recognition tasks for this species. Since there are rare benchmarks available for rice, we faced various difficulties in exploiting advanced machine learning methods for accurate analysis of the rice literature. To evaluate several approaches to automatically extract information from gene/protein entities, we built a new dataset for rice as a benchmark. This dataset is composed of a set of titles and abstracts, extracted from scientific papers focusing on the rice species, and is downloaded from PubMed. During the 5th Biomedical Linked Annotation Hackathon, a portion of the dataset was uploaded to PubAnnotation for sharing. Our ultimate goal is to offer a shared task of rice gene/protein name recognition through the BioNLP Open Shared Tasks framework using the dataset, to facilitate an open comparison and evaluation of different approaches to the task.

• Journal of Species Research
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• 제12권2호
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• pp.189-196
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• 2023

We monitored the hitchhiker insect pests from the international vessels entering into Korea in 2021. As a result, total of 581 individuals were detected by the survey based on visual inspection with naked eye. Among them, 500 individuals were identified as 244 species of 65 families under 11 orders through the integrative taxonomic method with DNA barcoding and morphological reexamination, but the remaining 81 individuals were classified as only to the family level. Of the 244 species identified, 26 species were determined to be not-distributed species in Korea (two Orthoptera, two Hemiptera, one Megaloptera, five Coleoptera, three Hymenoptera, and 13 Lepidoptera). Among them, two species, Sagra femorata (Chrysomelidae, Coleoptera) and Dendrolimus punctatus (Lasiocampidae, Lepidoptera), were discovered as 'Regulated species' listed by Animal and Plant Quarantine Agency, South Korea. Therefore, we reported on the 26 not-distributed species in Korea and provided inanimate pathway information such as navigation routes on the vessels hitchhiking the species, state of the samples at the time of detection, identification results and original distribution for the detailed monitoring and the risk analysis on the species.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제5권3호
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• pp.86-93
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• 2024

Unintentional dispersal of organisms has explosively increased due to expansion of human activities. Among introduced organisms, some organisms are categorized as invasive species because of their effects on environmental risk, economic loss, and human health. In 2023, a leopard slug (Limax maximus) was reported in Suwon, Republic of Korea. This slug was designated as a potential invasive species because a wide range of plant species were identified as food sources for this slug in its original habitats. However, it is difficult to investigate the ecological risk of this newly introduced slug in Republic of Korea. Therefore, the potential ecological risk from this newly introduced slug was estimated by meta-genome analyses of its feces. Through meta-genome analyses, 22 Families, 28 Genera, and 26 Species of land plants were identified. Among these 26 identified plant species, six economically important crops - squash (Cucurbita maxima), tomato (Solanum lycopersicum), potato (Solanum tuberosum), cowpea (Vigna unguiculata), rice (Oryza sativa), and oriental melon (Cucumis melo) - were identified. Therefore, leopard slugs potentially could cause economic losses in Republic of Korea. Further study is required to build a control strategy against leopard slugs.