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Taxonomic review of Eucnemidae (Coleoptera: Elateroidea) from Korea
Jinbae Seung,Seunghwan Lee 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.04
A total of 13 species of Eucnemidae are recognized from Korea, including 11 species new to Korea. Descriptions, illustrations and keys to each species are provided.
A taxonomic review of Genus Microrhagus (Coleoptera: Eucnemidae) from Korea
Jinbae Seung,Hong Yul Seo,Seunghwan Lee 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
The genus Microrhagus Dejean, 1833 is reviewed with four species from Korea: Microrhagus foveolatus (Fleutiaux, 1923), Microrhagus jejuensis sp. nov., Microrhagus mystagogus (Fleutiaux, 1923), and Microrhagus ramosus Fleutiaux, 1902. Herein, we provide a key to species of Korean Microrhagus, with diagnoses and photographs for each species.
JinBae Kim,Sang-Geun Cho,Namseok Kang,Kwangyeol Choi,Jongryoul Kim IEEE 2012 IEEE transactions on magnetics Vol.48 No.11
<P>We present the results of the magnetic domain structures of BaAl<SUB>2</SUB>Fe<SUB>10</SUB>O<SUB>19</SUB> nanopowders prepared by a self-propagating combustion process. Amorphous precursors were calcined at 850 °C for 2 h with NaCl (Sample I) and without NaCl (Sample II). The transmission electron microscope and atomic force microscopy images evidently suggested that there was a topological difference between Sample I (plate- and rod-shaped nanopowders) and Sample II (rod-shaped nanoparticles). We observed a considerably enhanced coercivity in Sample II, compared to Sample I. This result can be understood by the change in the magnetic domain width due to the shape effect of the nanopowders, which was investigated by measuring the field-controlled magnetic force microscopy.</P>