• Title/Summary/Keyword: n. gen.

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Poecilostome Copepods (Crustacea: Cyclopoida) Associated with Marine Invertebrates from Tropical Waters

  • Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • no.nspc7
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    • pp.1-90
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    • 2009
  • Twenty-two new species of poecilostome copepods associated with marine invertebrates are described from the West Indies, Madagascar, and Pacific coast of Panama. They are Anthessius nosybensis n. sp. and Discanthessius solitarius n. gen. n. sp. in the Anthessiidae; Cemihyclops tenuis n. sp., Hemicyclops tripartitus n. sp., H. humesi n. sp., H. magnus n. sp., and Leptinogaster minuta n. sp. in the Clausidiidae; Schedomolgus crenulatus n. sp. and S. parvipediger n. sp. in the Anchimolgidae; Kelleria multiovigera n. sp. in the Kelleridae; Lichomolgus angustus n. sp. and L. fusiformis n. sp. in the Lichomolgidae; Pseudanthessius acutus n. sp., P. asper n. sp., and Tubiporicola pediger n. gen. n. sp. in the Pseudanthessiidae; Acanthomolgus tenuispinatus n. sp. and Notoxynus lokobensis n. sp. in the Rhynchomolgidae; Eupolymniphilus occidentalis n. sp. and E. brevicaudatus n. sp. in the Sabellephilidae; Enalcyonium robustum n. sp. and E. grandisetigerum n. sp. in the Lamippidae; and O. binoviger n. sp. in the Myicolidae. Hemicyclops geminus Stock is synonymized with H. columnaris Humes which is now known as a species of amphi-American distribution. Hemicyclops columnaris Humes, Modiolicola trabalis Humes, and Ostrincola breviseti Ho and Kim are redescribed.

A New Genus and a New Species of Aquatic Oribatid Mite (Acari: Oribatida) from Korea (한국산 수서성 날개응애의 1신속 1신종)

  • 최성식
    • The Korean Journal of Soil Zoology
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    • v.1 no.1
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    • pp.1-4
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    • 1996
  • This paper deals with a new genus, Mainothrus gen. n., and a new species, M. aquaticus sp. n., belonging to Trhypochthoniidae Willmann, 1931 from Korea. The key characters of the new genus distinguishable from other genera of Trhypochthoniidae are 1) six pairs of genital setae, 2) two pairs of anal setae, 3) fifteen pairs of notogastral setae, and 4) epimeral setal formula; 3-1-3-2.

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Virus Resistant and Susceptible Transgenic Nicotiana benthamiana Plants Expressing Coat Protein Gene of Zucchini green mottle mosaic virus for LMO Safety Assessment

  • Kim, Min-Jea;Choi, Sun-Hee;Kim, Tae-Sung;Park, Min-Hye;Lim, Hee-Rae;Oh, Kyung-Hee;Kim, Tae-San;Lee, Min-Hyo;Ryu, Ki-Hyun
    • The Plant Pathology Journal
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    • v.20 no.3
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    • pp.206-211
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    • 2004
  • Transgenic Nicotiana benthamiana plants harboring coat protein (CP) gene of Zucchini green mottle mosaic virus (ZGMMV) were generated for virus-resistant screening and complementation analysis of related viruses for environmental safety assessment (SA) of living modified organism (LMO) purposes. Transformation of leaf disc of N.benthamiana was performed by using Agrobacterium-mediated method and the pZGC-PPGA748 containing the ZGMMV CP and NPTII genes. Two kinds of transgenic homozygous groups, virus-resistant and virus-susceptible N.benthamiana lines, were obtained by screening of challenging homologous virus for Tl generations. These two pathologically different lines can be useful for host-virus interactions and LMO environmental SA.

Two New Species of Echiuricopus n. gen. (Copepoda, Poecilostomatoida) Associated with Echiurans from the Yellow Sea

  • Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • v.32 no.1
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    • pp.9-20
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    • 2016
  • Two new species of poecilostomatoid copepods associated with echiurans are described from an intertidal mud flat in the Yellow Sea. A new genus Echiuricopus is created to accommodate two new species, E. aprilis and E. tenuipes. Major differences between the two new species are displayed in body length, length of caudal ramus seta I, length/width ratio of leg 5 exopod, and armature of the first antennular segment. Echiuricopus n. gen. is closely related to the genus Goidelia Embleton, 1901, but is distinguished from the latter chiefly by having seven caudal setae, a claw-like process on the first antennular segment, one claw-like process on the maxillary syncoxa, the absence of an inner coxal seta on legs 1-4, different armatures on legs 1-4, and an elongate leg 5 exopod.

Siphonostomatoid copepods (Crustacea) mainly associated with marine invertebrates from Korean waters

  • Kim, Il-Hoi
    • Journal of Species Research
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    • v.5 no.3
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    • pp.393-442
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    • 2016
  • Twelve species of siphonostomatoid copepods mainly associated with marine invertebrates are recorded from Korean waters. Nine species are new to science: Arctopontius minutus n. sp., A. adelphus n. sp, and Dyspontius alatus n. sp. in the family Artotrogidae; Asterocheres horridus n. sp., A. cuspis n. sp., A. quadridens n. sp., Scottocheres mipoensis n. sp., Asteropontoides acutirostris n. sp. and Callomyzon macrocephalus n. gen. n. sp. in the family Asterocheridae. The new genus Callomyzon is distinguished from other genera in the family by having six setae on the third endopodal segment of leg 3, four spines and three setae on the third exopodal segment of leg 4 and three setae on the third endopodal segment of leg 4. Three new records of Korea, Asterocheres lilljeborgi Boeck, 1859 and A. simulans (T. Scott, 1898) in the Asterocheridae, and Parartotrogus arcticus T. and A. Scott, 1901 in the Cancerillidae are redescribed as the circum-Arctic species.

NCAPH Stabilizes GEN1 in Chromatin to Resolve Ultra-Fine DNA Bridges and Maintain Chromosome Stability

  • Kim, Jae Hyeong;Youn, Yuna;Hwang, Jin-Hyeok
    • Molecules and Cells
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    • v.45 no.11
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    • pp.792-805
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    • 2022
  • Repairing damaged DNA and removing all physical connections between sister chromosomes is important to ensure proper chromosomal segregation by contributing to chromosomal stability. Here, we show that the depletion of non-SMC condensin I complex subunit H (NCAPH) exacerbates chromosome segregation errors and cytokinesis failure owing to sister-chromatid intertwinement, which is distinct from the ultra-fine DNA bridges induced by DNA inter-strand crosslinks (DNA-ICLs). Importantly, we identified an interaction between NCAPH and GEN1 in the chromatin involving binding at the N-terminus of NCAPH. DNA-ICL activation, using ICL-inducing agents, increased the expression and interaction between NCAPH and GEN1 in the soluble nuclear and chromatin, indicating that the NCAPH-GEN1 interaction participates in repairing DNA damage. Moreover, NCAPH stabilizes GEN1 within chromatin at the G2/M-phase and is associated with DNA-ICL-induced damage repair. Therefore, NCAPH resolves DNA-ICL-induced ultra-fine DNA bridges by stabilizing GEN1 and ensures proper chromosome separation and chromosome structural stability.

Performance Analysis of Wireless Communications between Tag and Reader in EPCglobal Gen-2 RFID System (EPCglobal Gen-2 RFID 시스템 태그와 리더간의 무선 전송 방식 성능 분석)

  • Yoon, Hee-Seok;Mohaisen, Manar;Chang, Kyung-Hi;Bae, Ji-Hoon;Choi, Gil-Young
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.18 no.9
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    • pp.1047-1056
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    • 2007
  • In this paper, we analyze the performance of the encoding and the modulation processes in the downlink and uplink of the EPCglobal Gen-2 system through the analysis and simulation. Furthermore, the synchronization issues on time and frequency domain and the preamble architecture are evaluated. By incorporating the encoding and the modulation technigue in the downlink and uplink, we assess the performance of the EPCglobal Gen-2 system. We also introduce the encoding and backscatter modulation process as well as the BER performance of FM0 code. In addition, the importance and the role of the frequency and time synchronization, such as the preamble and frame synchronization are explained. Through the simulation in the uplink on the detection probability through preamble, we find that the detection probability approaches 1 for 13 dB $E_b/N_0$.

A New Genus and Species, Koreoxyomus koreanus, from Korea and Taxonomic Discussion on the Genus Mozartius of Japan(Coleoptera, Aphodiidae) (韓國産 똥풍이科의 1新屬, 1新種의 記載 및 日本産 Mozartius屬의 分類學的 檢討)

  • 김진일
    • Animal Systematics, Evolution and Diversity
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    • v.12 no.2
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    • pp.101-105
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    • 1996
  • A new genus and species belonging to the family Aphodiidae (Coleoptera) Koreoxyomus koreanus gen. et sp. nov., is described from Korea. And a genus known from Japan, Mozartius is discussed because it is almost same taxa with present new genus but its original description is not stable taxonomically.

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Some properties of Cucumber mosaic virus and a potfvirus isolated from Freesia

  • Lim, H.R.;Shin, E.G.;Ahn, H.I.;Ryu, K.H.
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.147.1-147
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    • 2003
  • Freesia, a member of the Iridaceae family, has fragant, tubular shaped flowers and is very popular ornamental plants in the world. Diseased freesia plants showing systemic leaf streak mosaic symptoms were collected from a cultivated farm in Kyonggi province, Korea in 2003, and its causal agents were investigated. Two viruses, Cucumber mosaic virus (Fr-CMV) and a potyvirus, were identified from the leaf tissues of the diseased freesia based on sequence analysis and host range tests. CMV-Fr could infect systemically on Chenopodium quinoa, C. amaranticolor, N. glutinosa, and N. benthamiana, and this biological property is distinguishable from ordinary strains of CMV. A filamentous potyvirus-shaped virus could not infect general indicator plants by mechanical inoculation. Single RT-PCR products was successfully amplified with a set of degenerate primers specific to the Potyvirus genus and total nucleic acids from the infected tissues, and was cloned into the pGEMT-Easy vector. Nucleotide sequences confirmed it belongs to the Potyvirus genus with either a new species or an isolate of Freesia mosaic virus (no information is available for the FrMV). This is the first report of FrMV in Korea and more characterizations of the two viruses are in progress.

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