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Sera Kang,Sang Jae Suh 한국동물분류학회 2017 Animal Systematics, Evolution and Diversity Vol.33 No.4
Flies of the genus Scatella are small and dark-gray, and many species have distinctive whitish spots on their gray wings. Most species are found in damp environment, such as the borders of marshes, seashore areas, swamps, lakes, ponds, streams, and paddy fields. The Korean shore fly genus Scatella Robineau-Desvoidy has been taxonomically noted. A total of five species have been identified: S. calida Matsumura, 1915, S. nipponica Miyagi, 1977, S. obsoleta Loew, 1861, S. paludum (Meigen, 1830), and S. tenuicosta Collin, 1930. This is the first report of S. calida Matsumura, 1915 from Korea. A key to the Korean Scatella species and photographs of the external features have been provided.
Kang, Seunghun,Jeon, Sera,Kim, Sera,Seol, Daehee,Yang, Heejun,Lee, Jaekwang,Kim, Yunseok American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.32
<P>Piezoelectricity crystallographically exists only in the in-plane direction in two-dimensional transition metal dichalcogenides. Here, we demonstrated flexoelectricity-tunable out-of-plane piezoelectricity in semiconducting 2H-MoTe<SUB>2</SUB> flakes by creating surface corrugation. In particular, the strong out-of-plane piezoelectricity and its spatial variation depending on local flexoelectricity was observed even though crystallographically there exists only in-plane piezoelectricity. Surface corrugation-mediated flexoelectricity tuning can be applied to other two-dimensional or thin-layered materials and, furthermore, the results could provide useful information on the interweaving nature between mechanical stimulus and electric dipole in low-dimensional materials.</P> [FIG OMISSION]</BR>
Kang, Seunghun,Kim, Sera,Jeon, Sera,Jang, Woo-Sung,Seol, Daehee,Kim, Young-Min,Lee, Jaekwang,Yang, Heejun,Kim, Yunseok Elsevier 2019 Nano energy Vol.58 No.-
<P><B>Abstract</B></P> <P>It is known that only in-plane piezoelectricity exists in pristine two dimensional (2D) transition metal dichalcogenides (TMDs). In this study, we demonstrate the creation of strong out-of-plane piezoelectricity in semiconducting 2H-MoTe<SUB>2</SUB> flakes by an artificial atomic-scale symmetry breaking. The atomic-scale symmetry breaking associated with flexoelectricity was realized through Te vacancy formation by a simple thermal annealing of the 2D TMDs. The strong out-of-plane piezoelectricity was experimentally measured and confirmed by theoretical calculations. This strategy of atomic-scale symmetry modulation for out-of-plane piezoelectricity can be easily applied to a broader class of 2D TMD materials that have not been used for applications with out-of-plane piezoelectricity. Accordingly, it can stimulate the expansion of practical energy device applications with 2D TMD materials.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Achievement of strong out-of-plane piezoelectricity. </LI> <LI> Atomic-scale symmetry breaking via Te vacancy formation. </LI> <LI> Simple strategy for inducing out-of-plane piezoelectricity by thermal annealing. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kang, Sera,Suh, Sang Jae The Korean Society of Systematic Zoology 2017 Animal Systematics, Evolution and Diversity Vol.33 No.4
Flies of the genus Scatella are small and dark-gray, and many species have distinctive whitish spots on their gray wings. Most species are found in damp environment, such as the borders of marshes, seashore areas, swamps, lakes, ponds, streams, and paddy fields. The Korean shore fly genus Scatella Robineau-Desvoidy has been taxonomically noted. A total of five species have been identified: S. calida Matsumura, 1915, S. nipponica Miyagi, 1977, S. obsoleta Loew, 1861, S. paludum (Meigen, 1830), and S. tenuicosta Collin, 1930. This is the first report of S. calida Matsumura, 1915 from Korea. A key to the Korean Scatella species and photographs of the external features have been provided.
( Wonseok Kang ),( Sera Yang ),( Sohee Kang ),( Ji-young Kim ),( Yong-han Paik ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related death worldwide. Recently, PD-1 blockade has shown promising results in the treatment of advanced HCC. However, only 15-20% of patients showed objective response, suggesting the need for development of an effective combination therapy. CD47 is an innate immune checkpoint molecule known as ‘don’t-eat me’ signal, which plays a critical role in macrophage activation and phagocytosis. In the current study, we investigated the effects of anti-CD47 inhibition in combination with PD-1 blockade in a syngeneic preclinical model of HCC. Methods: The effect of anti-CD47 and/or anti-PD-1 treatment was studied in vitro and in vivo using a syngeneic preclinical model of HCC. Flow cytometry was used to assess the phagocytic activity of macrophages. Results: Phagocytosis of HCC cells by macrophages was increased after treatment with anti-CD47 and/or anti-PD-1 treatment. Further, combinatory treatment of anti-CD47 and anti-PD-1 blockade significantly suppressed tumor growth and improved survival in the syngeneic preclinical model of HCC. Conclusions: Targeting CD47 in combination with anti-PD-1 immune checkpoint blockade has a potential immunotherapeutic efficacy in HCC.