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First Report of the Mantid Shrimp Faughnia formosae (Stomatopoda: Parasquillidae) from Korea
Hwang, Hee-Seung,Lee, Sang-Kyu,Kim, Mijin,Kim, Won The Korean Society of Systematic Zoology 2013 Animal Systematics, Evolution and Diversity Vol.29 No.3
The stomatopods are aggressive predatory marine crustaceans, which are mainly found in tropical and subtropical regions. Among these, a parasquillid stomatopod, Faughnia formosae Manning and Chan, 1997, collected from Jeju Island, is reported for the first time in Korea. The family is easily distinguished from other families by the presence of an asymmetrically bilobed cornea, stout propodus on the raptorial claw, and three primary spines of the uropodal protopod. In the paper, detailed descriptions and illustrations of this species are provided alongside a photograph. A key to the species of Korean mantis shrimp is also presented. As a result of this study, four species of stomatopods including this species are now recorded in Korean fauna.
Won Lim, Ju,Kyu Jin, Chang,Yong Lim, Keun,Jae Lee, Yun,Kim, Sung-Ryong,Choi, Byung-Il,Whan Kim, Tae,Ha Kim, Dong,Kyung Hwang, Do,Kook Choi, Won Elsevier 2017 Nano energy Vol.33 No.-
<P><B>Abstract</B></P> <P>The science and technology of organic electronics have made consistent progress. However, the long-term stability of organic devices is a critical issue that remains to be resolved. Encapsulation is a straightforward and practical means to protect organic materials from oxygen or moisture and thus improve air stability. Here, we report a high-performance flexible inorganic SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film for application in organic solar cells (OSCs). This hybrid barrier film shows average transmittance of 85.5% and a water-vapor transmission rate of 7.1×10<SUP>–5</SUP> gm<SUP>−2</SUP> day<SUP>−1</SUP>. In OSCs comprising poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]-thiophenediyl] (PTB7) and [6,6]-phenyl-C<SUB>70</SUB>-butyric acid methyl ester (PC<SUB>70</SUB>BM), which were encapsulated by the SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film, the power-conversion efficiency remained above 86% of the initial value even after 2000h of storage in air, which is comparable to that obtained for a device encapsulated by a glass lid.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A inorganic SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film prepared on a flexible substrate. </LI> <LI> The SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film shows WVTR of 7.1×10<SUP>-5</SUP> g m<SUP>-2</SUP> day<SUP>-1</SUP>. </LI> <LI> The PCE of encapsulated OSCs remained 86% of initial efficiency even after 2000 h. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>The high performance flexible inorganic SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film is proposed for application in organic solar cells (OSCs), which shows average transmittance of 85.5% and WVTR value of 7.1×10<SUP>−5</SUP> gm<SUP>−2</SUP> day<SUP>−1</SUP>. In PTB7:PC<SUB>70</SUB>BM OSCs encapsulated by the SiN<SUB>x</SUB>/SiO<SUB>x</SUB>N<SUB>y</SUB> hybrid barrier film, PCE reamins above 86% of the initial value even after 2000h storage in ambient air, comparable to that obtained for a device encapsulated by a glass lid.</P> <P>[DISPLAY OMISSION]</P>
Hwang, Kyung-Ran,Oh, Duck-Kyu,Lee, Sung-Wook,Park, Jong-Soo,Song, Myung-Hoon,Rhee, Won-Hyuk Elsevier 2017 International journal of hydrogen energy Vol.42 No.21
<P><B>Abstract</B></P> <P>We prepared a disc-shaped porous stainless steel (PSS) support for hydrogen separation Pd membrane via metal injection molding (MIM) method to facilitate the mass production of porous substrates. MIMed PSS supports obtained in a batch showed relatively higher apparent porosity (from 32.75% to 39.28%) than that reported for commercially available PSS substrate. In addition, the surface morphologies of the MIMed PSS, surface roughness of 1.119 μm and pore depth of 8.6 μm, indicate its suitability as a membrane support than the commercially available one. Pd membrane prepared over MIMed PSS, which was modified by a simple axial pressing method to control the surface morphologies, had a thinner Pd layer, 2.94 μm, and showed an extremely higher ideal H<SUB>2</SUB>/N<SUB>2</SUB> selectivity with a hydrogen permeation flux of 21.3 ml/min/cm<SUP>2</SUP> at del-P = 1 bar and 400 °C, compared with Pd membrane over MIMed PSS modified with conventional surface modification.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Disc-shaped porous stainless steel substrates fabricated by metal injection molding. </LI> <LI> Porous stainless steel support for preparing a thin and dense Pd-based hydrogen membrane. </LI> <LI> A simple axial pressing method to control the surface morphologies of the substrates. </LI> </UL> </P>
Kyu Ri Hahn,Woosuk Kim,Hyo Young Jung,Hyun Jung Kwon,Sung Min Nam,Tae Hyeong Kim,Jong Whi Kim,Dae Young Yoo,Dae Won Kim,Jung Hoon Choi,Yeo Sung Yoon,In Koo Hwang 한국실험동물학회 2021 한국실험동물학회 학술발표대회 논문집 Vol.2021 No.7
In the present study, we investigated the effects of cuprizone on cell death, glial activation, and neuronal plasticity induced by hypothermia after ischemia in gerbils. Food was supplemented with cuprizone at 0.2% ad libitum for eight weeks. At six weeks after diet feeing, gerbils received transient forebrain ischemia with or without hypothermic preconditioning. Cuprizone treatment for 8 weeks increased the number of astrocytes, microglia, and pro-inflammatory cytokine levels in the hippocampus. In addition, cuprizone treatment significantly decreased the number of proliferating cells and neuroblasts in the dentate gyrus. Brain ischemia caused cell death, disruption of myelin basic proteins, and reactive gliosis in CA1. In addition, ischemia significantly increased pro-inflammatory cytokines and the number of proliferating cells and differentiating neuroblasts in the dentate gyrus. In contrast, hypothermic conditioning attenuated these changes in CA1 and the dentate gyrus. However, cuprizone treatment decreased cell survival induced by hypothermic preconditioning after ischemia and increased the number of reactive microglia and astrocytes in CA1 as well as of macrophages in the subcallosal zone. These changes occurred because the protective effect of hypothermia in ischemic damage was disrupted by cuprizone administration. Furthermore, cuprizone decreased ischemia-induced proliferating cells and neuroblasts in the dentate gyrus
Hwang, Do Won,Choi, Yoori,Kim, Dohyun,Park, Hye Yoon,Kim, Kyu Wan,Kim, Mee Young,Park, Chul-Kee,Lee, Dong Soo Elsevier 2019 NANOMEDICINE Vol.16 No.-
<P><B>Abstract</B></P> <P>FISH-based RNA detection in paraffin-embedded tissue can be challenging, with complicated procedures producing uncertain results and poor image quality. Here, we developed a robust RNA detection method based on graphene oxide (GO) quenching and recovery of fluorescence <I>in situ</I> hybridization (G-FISH) in formalin-fixed paraffin-embedded (FFPE) tissues. Using a fluorophore-labeled peptide nucleic acid (PNA) attached to GO, the endogenous long noncoding RNA BC1, the constitutive protein β-actin mRNA, and miR-124a and miR-21 could be detected in the cytoplasm of a normal mouse brain, primary cultured hippocampal neurons, an Alzheimer's disease model mouse brain, and glioblastoma multiforme tumor tissues, respectively. Coding and non-coding RNAs, either long or short, could be detected in deparaffinized FFPE or frozen tissues, as well as in clear <B>lipid-exchanged anatomically rigid imaging/immunostaining-compatible tissue hydrogel</B> (CLARITY)-transparent brain tissues. The fluorescence recovered by G-FISH correlated highly with the amount of miR-21, as measured by quantitative real time RT-PCR. We propose G-FISH as a simple, fast, inexpensive, and sensitive method for RNA detection, with a very low background, which could be applied to a variety of research or diagnostic purposes.</P> <P><B>Graphical Abstract</B></P> <P>Fluorescence <I>in situ</I> hybridization (FISH) method for RNA detection in paraffin-embedded tissue contains complicated protocols with poor image quality. In this study, we developed a robust nanoplatform using graphene oxide (GO) quenching and recovery of fluorescence <I>in situ</I> hybridization (G-FISH) for sensitive RNA detection in formalin-fixed paraffin-embedded (FFPE) tissues. A carboxyfluorescein (FAM) dye-decorated peptide nucleic acid (PNA) probe complementary to the target RNA was attached to graphene oxide. Rapid hybridization between the FAM-PNA probes and target RNAs leads to recovery of fluorescence signals in FFPE tissue section. Brain specific BC1 long noncoding RNA and miR-124a expression was markedly detected in paraffin-embedded brain tissue. The difference in BC1 expression was seen in brain section of Alzheimer's disease model. G-FISH also showed highly expressed miR-21 level in human glioblastoma brain tissue sample.</P> <P>[DISPLAY OMISSION]</P>