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Chung, Eunsook,Ryu, Choong-Min,Oh, Sang-Keun,Kim, Ryong Nam,Park, Jeong Mee,Cho, Hye Sun,Lee, Sanghyeob,Moon, Jae Sun,Park, Seung-Hwan,Choi, Doil Blackwell Publishing Ltd 2006 Physiologia Plantarum Vol.126 No.4
<P>SGT1 associates with suppressor of kinetochore protein (Skp1)-Cullin-F-box (SCF)–ubiquitin-ligase complexes playing important roles in controlling developmental processes and defense responses in plants, yeast, and human. In this study, full-length cDNAs of <I>Sgt1</I> and <I>Skp1</I> orthologues were isolated from pepper (<I>Capsicum annuum</I> L.) to characterize their functions. Protein sequences of CaSgt1 and CaSkp1 showed high degrees of similarities with their homologues in other plant species. Southern blot analyses revealed that <I>CaSgt1</I> was a single copy gene in the pepper genome, whereas <I>CaSkp1</I> corresponded to multi copy genes. Levels of <I>CaSgt1</I> and <I>CaSkp1</I> mRNAs increased in pepper leaves in response to incompatible pathogen challenge or salicylic acid treatment. Silencing of <I>CaSgt1</I> or <I>CaSkp1</I> using Tobacco rattle virus-based virus-induced gene-silencing (VIGS) system resulted in severe dwarfism and final damping-off symptom in the greenhouse. To identify factors determining damping-off symptom in <I>CaSgt1</I>- or <I>CaSkp1</I>-silenced plants, we employed VIGS under sterile conditions. Under such conditions, damping-off symptom was not observed suggesting that <I>CaSgt1</I> and <I>CaSkp1</I> play an essential role in plant growth and development as well as basal disease resistance in pepper plant.</P>
SHOMY: Detection of Small Hazardous Objects using the You Only Look Once Algorithm
김은찬,Jinyoung Lee,Hyunjik Jo,Kwangtek Na,Eunsook Moon,Gahgene Gweon,Byungjoon Yoo,경연웅 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.8
Research on the advanced detection of harmful objects in airport cargo for passenger safety against terrorism has increased recently. However, because associated studies are primarily focused on the detection of relatively large objects, research on the detection of small objects is lacking, and the detection performance for small objects has remained considerably low. Here, we verified the limitations of existing research on object detection and developed a new model called the Small Hazardous Object detection enhanced and reconstructed Model based on the You Only Look Once version 5 (YOLOv5) algorithm to overcome these limitations. We also examined the performance of the proposed model through different experiments based on YOLOv5, a recently launched object detection model. The detection performance of our model was found to be enhanced by 0.3 in terms of the mean average precision (mAP) index and 1.1 in terms of mAP (.5:.95) with respect to the YOLOv5 model. The proposed model is especially useful for the detection of small objects of different types in overlapping environments where objects of different sizes are densely packed. The contributions of the study are reconstructed layers for the Small Hazardous Object detection enhanced and reconstructed Model based on YOLOv5 and the non-requirement of data preprocessing for immediate industrial application without any performance degradation.
염료감응 태양전지 전극용 반도체 나노 물질의 광전자분광 연구
김현우(Hyun Woo Kim),이은숙(Eunsook Lee),김대현(D. H. Kim),성승호(Seungho Seong),강정수(J.-S. Kang),문수연(S. Y. Moon),신유주(Yuju Shin) 한국자기학회 2015 韓國磁氣學會誌 Vol.25 No.5
The electronic structures of the potential candidate semiconductor nanoparticles for dye-sensitized solar cell (DSSC), such as ZnSnO₃ and Zn₂SnO₄, have been investigated by employing X-ray photoemission spectroscopy (XPS). The measured X-ray diffraction patterns show that ZnSnO₃ and Zn₂SnO₄ samples have the single-phase ilmenite-type structure and the inverse spinel structure, respectively. The measured Zn 2p and Sn 3d core-level XPS spectra reveal that the valence states of Zn and Sn ions are divalent (Zn 2+) and tetravalent (Sn 4+), respectively, in both ZnSnO₃ and Zn₂SnO₄. On the other hand, the shallow core-level measurements show that the binding energies of Sn 4d and Zn 3d core levels in ZnSnO₃ are lower than those in Zn₂SnO₄. This work provides the information on the valence states of Zn and Sn ions and their chemical bonding in ZnSnO₃ and Zn₂SnO₄.