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Portable Serial Robot Manipulator with Distributed Actuation Mechanism
Sung-Hwan Kim,Byungho Yoon,Ho Ju Lee,Soohyun Kim,Kyung-Soo Kim,Jong Cheol Kim,Tae Yang Noh 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
In this paper, a portable robot manipulator is developed with distributed actuation mechanism. In order to achieve the high performance and suitable size simultaneously, a distributed actuation mechanism is implemented. The proposed robot manipulator has several advantages such as high payload capacity and small size with high efficiency. In particular, a folding function is adopted for the portability. Prototype 2-DOF manipulator is developed, and the performance is experimentally verified.
Environmental Specimen Bank and Ecosystem Assessment
Kim, Myungjin,Kim, Jiyeon,Cho, Yongjoo,Yoo, Byungho Korean Society of Environmental Impact Assessment 2009 환경영향평가 Vol.18 No.6
Environmental specimen bank (ESB) is a new tool to assess ecosystem in environmental impact assessment (EIA). ESB looks at changes in the concentration of pollutants in human and environmental specimens over long periods of time through retrospective analysis of archived samples. Korea started to design its National Environmental Specimen Bank (NESB) in 2007 and planned to launch an operational pilot project by 2010. NESB prepares five Standard Operating Procedures (SOPs) of shoots of Red and Korean pine, leaves of Mongolian oak, Pigeon's egg, and Common carp's muscle out of 14 planned specimens in 2009. ESB contributes to monitoring the effectiveness of EIA projects and policies by providing a time capsule through ecosystem assessment of representative species. This study reviews ecosystem assessment in EIA and the ESB establishment in Korea and probes NESB applications in ecosystem assessment.
Direct interaction of menin leads to ubiquitin-proteasomal degradation of β-catenin
Kim, Byungho,Song, Tae-Yang,Jung, Kwan Young,Kim, Seul Gi,Cho, Eun-Jung Elsevier 2017 Biochemical and biophysical research communication Vol. No.
<P><B>Abstract</B></P> <P>Menin, encoded by the multiple endocrine neoplasia type 1 (<I>MEN1</I>) gene, is a tumor suppressor and transcription regulator. Menin interacts with various proteins as a scaffold protein and is proposed to play important roles in multiple physiological and pathological processes by controlling gene expression, proliferation, and apoptosis. The mechanisms underlying menin's suppression of tumorigenesis are largely elusive. In this study, we showed that menin was essential for the regulation of canonical Wnt/β-catenin signaling in cultured cells. The C-terminal domain of menin was able to directly interact with and promote ubiquitin-mediated degradation of β-catenin. We further revealed that overexpression of menin down-regulated the transcriptional activity of β-catenin and target gene expression. Moreover, menin efficiently inhibited β-catenin protein levels, transcriptional activity, and proliferation of human renal carcinoma cells with an activated β-catenin pathway. Taken together, our results provide novel molecular insights into the tumor suppressor activity of menin, which is partly mediated by proteasomal degradation of β-catenin and inhibition of Wnt/β-catenin signaling.</P>
Design of biped robot inspired by cats for fast running
Kim, Soohyun,Kim, Kyung-Soo,Kim, Young Kook,Yoon, Byungho,Park, Jongwon Institution of Electrical Engineers 2014 Electronics letters Vol.50 No.10
A novel design of a biped robot inspired by domestic cats for fast running is introduced. The skeletomuscular system of a cat is analysed and applied to determine the link parameters and the linkage structure of the proposed mechanism. The linkage design of the leg mechanism is explained and a kinematic analysis based on vector loop equations is performed. The effectiveness of the proposed mechanism is verified experimentally. The biped robot runs at an average speed of 2 m/s at a step frequency of 4 Hz. This leg mechanism can facilitate the development of fast running robot systems.
Lim, Byungho,Jin, Jaewon,Yoo, Jin,Han, Seung Yong,Kim, Kyeongyeol,Kang, Sungah,Park, Nojin,Lee, Sang Moon,Kim, Hae Jin,Son, Seung Uk The Royal Society of Chemistry 2014 Chemical communications Vol.50 No.57
<P>Very thin microporous organic networks were formed on the surface of Fe<SUB>3</SUB>O<SUB>4</SUB> nanospheres by Sonogashira coupling of tetra(4-ethynylphenyl)methane and 1,4-diiodobenzene. The thickness was controlled by screening the number of building blocks. Through carbonization, Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites were prepared. The Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites with 4–6 nm carbon thickness showed promising reversible discharge capacities of up to 807 mA h g<SUP>−1</SUP> and enhanced electrochemical stability.</P> <P>Graphic Abstract</P><P>Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites obtained <I>via</I> carbonization of microporous organic networks showed promising discharge capacities of up to 807 mA h g<SUP>−1</SUP> and electrochemical stability. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc02068e'> </P>