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Ya-Jun Gong,Jin-Cui Chen,Shao-Kun Guo,Pan Shi,Li-Jun Cao,Ming-Liang Li,Ary A. Hoffmann,Shu-Jun Wei 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4
The fall webworm (FWW) Hyphantria cunea, native to North America, is a globally invasive pest of a wide range of forest and fruit trees. Spraying of pesticides is the primary method for the control of FWW. In this study, toxicity and feeding cessation of two potential pesticides against the FWW, chlorantraniliprole, and chromafenozide, were evaluated. Both pesticides were slow to affect FWW. For chlorantraniliprole, the highest mortality of third instar larvae occurred at 72 h with an LC 50 of 10.34 mg/L, while for chromafenozide, the highest mortality occurred at 72 h with an LC 50 value 74.0950 mg/L. Low concentrations of both pesticides led to larvae ceasing to feed after six hours (chlorantraniliprole) and 24 h (chromafenozide). Both pesticides had persistent effects; thirty days after being applied at concentrations of 16, 26.67, and 35.56 mg/L to leaves, 93.33% of newly contacted larvae died after seven days. Our study showed that chlorantraniliprole and chromafenozide could be alternatively used against FWW and form a component of integrated control programs. The results provide information to guide the usage of chlorantraniliprole and chromafenozide in FWW control.
Morphological Descriptions of New and Little-Known Benthic Ciliates from Ganghwa Tidal Flat, Korea
GONG, JUN,CHOI, JOONG KI,ROBERTS, DAVID McL.,KIM, SUN YOUNG,MIN, GI SIK Wiley (Blackwell Publishing) 2007 JOURNAL OF EUKARYOTIC MICROBIOLOGY - Vol.54 No.3
<P>Ciliates are highly diverse in the benthos where there are rare species to be unrevealed and described. By isolating species during successive and diversified cultivations, we discovered several new and interesting taxa from the top layer sediment of a muddy site in the Ganghwa tidal flat. These include three new species Spirodysteria ganghwaensis n. sp., Uronemella parafilificum n. sp., Zosterodasys minuta n. sp., and one poorly known form Loxophyllum chaetonotumBorror 1965. The morphology of live cells and infraciliature of these four species are described based on living observations, protargol impregnations, and morphometrics. Diagnoses and improved definitions are also provided. The newly established genus Spirodysteria n. g. differs from Dysteria mainly in its spirally twisted body shape. Spirodysteria kahli (Tucolesco 1962) n. comb. (formerly Dysteria kahliTucolesco 1962) has been included in this new genus.</P>
Gong, Jun,Kim, Se-Joo,Kim, Sun-Young,Min, Gi-Sik,Roberts, David McL,Warren, Alan,Choi, Joong-Ki Society of Protozoologists 2007 JOURNAL OF EUKARYOTIC MICROBIOLOGY - Vol.54 No.6
<P>The morphology and infraciliature of two stichotrichid ciliates, Gastrostyla pulchra(Perejaslawzewa 1886) Kahl, 1932 and Hemigastrostyla enigmatica(Dragesco and Dragesco-Kernéis 1986) Song & Wilbert, 1997, collected from marine and brackish sediments, were investigated by using living observations and protargol impregnations. Both 18S and 28S rRNA genes of these two species were sequenced. The 18S rDNA show high similarities (98.4%-99.7%) among populations of each species. There is about 94% similarity in 18S rDNA genes between G. pulchra and Gastrostyla steinii, the type species of the genus, which has been confirmed to be an oxytrichid by previous studies. In the phylogenetic trees of 18S, 28S, and combined 18S and 28S rDNA, both G. pulchra and H. enigmatica are consistently placed outside the well-established oxytrichid clade. Based on our analyses and previous ontogenetic data, we conclude that these two species may represent some lower groups in the subclass Stichotrichia, and that G. pulchra should represent a new genus, Protogastrostyla n. g. This new genus, which is morphologically similar to Gastrostyla, differs in its morphogenesis: the apical part of the old AZM is retained combining with the newly built membranelles that develop from the proter's oral primordium; the primary primordia of the dorsal kinety; and marginal primordia commence de novo without a definite contribution from the old structure.</P>
경동맥화학색전술과 정위절제방사선 병합치료로 완전한 관해를 보인 작은 크기의 간세포암종 1예
차준영 ( Jun Young Cha ),전백규 ( Baek Gyu Jun ),공은정 ( Eun Jeong Gong ),서현일 ( Hyun Il Seo ),박종규 ( Jong Kyu Park ),이상진 ( Sang Jin Lee ),김영돈 ( Young Don Kim ),한군희 ( Koon Hee Han ),정우진 ( Woo Jin Jeong ),천갑진 ( 대한간암학회 2018 대한간암학회지 Vol.18 No.2
In hepatocellular carcinoma (HCC), surgical resection or local ablation therapy is limited because of severe liver dysfunction or tumor location. Transarterial chemoembolization (TACE) has beed used widely as palliative treatment. Stereotactic Body Radiotherapy (SBRT) is a more recent and effective treatment for early stage HCC. We report a case with small HCC with complete response by TACE combined with SBRT. (J Liver Cancer 2018;18:157-161)
Research on the Inter-harmonics Equivalent Impedance of Series Hybrid Active Power Filter
Jian-gong, Zhang,Jian-ben, Liu,Shao-jun, Dai,Qiao-fu, Chen,Jun-jia, He The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.5
In the series hybrid active power filter (SHAPF) with magnetic flux compensation (MFC), the system current oscillate in the experimental results when adding the same phase harmonic current command in current control block. This condition endangers the security of the SHAPF. Taking the digit period average arithmetic as example, this paper explains the inter-harmonics current oscillation in the experiment. The conclusion is that the SHAPF is unstable to the inter-harmonics current in theory. Limited by the capacity of the inverter, the system current and the inverter output current do not increase to infinite. At last, some methods are proposed to solve this problem. From the practical viewpoint, the voltage feed-forward control is easy to achieve. It can suppress the current oscillation problems, and also improve the filtering effect. The feasibility of the methods is validated by both the emulation and experiment results.