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고로슬래그 기반 분말활성탄 혼입방법에 따른 미세먼지 흡착형 경화체의 특성
김연호 ( Kim Yeon-ho ),조은석 ( Jo Eun-seok ),이상수 ( Lee Sang-soo ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.1
Recently, the problem of air pollution is drawing attention as a social problem worldwide. Particularly, fine dust is the biggest issue among air pollutants, and it is analyzed that fine dust is generated from air pollutants such as burning fossil fuels such as petroleum or coal, or exhaust gases from automobiles. In addition, yellow dust originating from China adjacent to Korea flows into the Korean Peninsula in a western wind, causing the concentration of fine dust to deteriorate. Fine dust is a harmful substance to the human body such as asthma or respiratory disease, and awareness of the risk is also increasing to a degree designated as a primary carcinogen. In this study, as a method for improving the indoor air quality, the Properties of the matrix according to the mixing ratio of powdered activated carbon based on blast furnace slag are reviewed. The flexural strength and compressive strength were measured, and a fine dust concentration measurement experiment will be conducted later.
김연호 ( Kim Yeon-ho ),이상수 ( Lee Sang-soo ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2
Recently, the risk of fine dust is emerging in Korea. According to the OECD report, the incidence of hospitalization and mortality from lung disease is increased, and the incidence of lung cancer and mortality from ischemic heart disease with prolonged exposure are increased. In addition, indoor air quality has become an important factor affecting the human body as indoor life has increased due to the Industrial Revolution. Air pollutants that cause indoor air deterioration typically include particulate dusts as described above, formaldehyde and VOCs released in gaseous form from adhesive wood products used in building materials and furniture. May cause breathing problems. In this study, we analyzed the properties of adsorption matrix for improving indoor air quality using cork.
소형위성용 전기추진시스템을 위한 연료공급부의 발사환경 시험평가
김연호(Younho Kim),강석현(Seokhyun Kang),정연황(Yunhwang Jung),강성민(Seongmin Kang),선종호(Jongho Seon),이상현(Sang-Hyun Lee),차원호(Won-Ho Cha),은희광(Hee-Kwang Eun) 한국항공우주학회 2014 韓國航空宇宙學會誌 Vol.42 No.12
소형인공위성에 적용을 목적으로 전기추진시스템의 연료공급부가 개발되었다. 연료공급부는 연료로 사용되는 제논을 높은 압력과 밀도의 가스상태로 저장하게 된다. 제논은 상온에서 임계점을 갖는데 발사환경에서 과도상태로 시스템에 영향을 미칠 수 있다. 따라서 발사환경에 대한 본 시스템의 기능적ㆍ구조적 안정성은 지상시험을 통한 검증이 필요하다. 본문에서는 연료공급부의 설계점과 검증시험내용을 논하고 시험결과를 정리하였다. 검증시험을 통해 본 시스템이 발사환경에 대하여 안정성을 확보하고 있는 것을 확인하였다. A Fuel Feeding Unit of electric propulsion system has been developed for the small-satellite applications. The fuel feeding unit stores the xenon gas with high pressure and density as a fuel. Xenon can affect to system stability since xenon has the transient condition under the critical point which is in ambient temperature on the launch environment. The functional and structural stability on the launch environment needs verification through the ground tests. The design points and verification tests of the system were discussed and test results were described on this text. The system stability on the launch environment was verified through these verification tests.
김연호(Younho Kim),선종호(Jongho Seon),강성민(Seongmin Kang),위정현(Junghyun Wee),윤호성(Hosung Yoon),최원호(Wonho Choe),이종섭(Jongsub Lee),서미희(Mihui Seo) 한국항공우주학회 2009 韓國航空宇宙學會誌 Vol.37 No.4
소형 인공위성의 궤도 보정을 위한 300 W급 홀 추력기의 제논연료공급장치를 개발하였다. 가스 상태의 제논 연료를 150 bar에서 2 ㎏을 저장할 수 있으며, 0.5 SCCM의 미세 유량을 제어할 수 있다. 미세 유량을 제어할 수 있는 유량 제어밸브의 구동을 위해 시스템을 구성하고, 시험을 통해 성능검증을 수행하였다. 이를 통해 1.0×10?? torr압력의 진공에서 연료공급장치가 성공적으로 동작함을 확인하였다. A Xenon feed system has been developed for a 300 W Hall-effect thruster intended for orbit maintenance of small satellite. The system can store about 2 ㎏ of xenon gas at 150 bar and is capable of controlling the mass flow rate of the gas at 0.5 SCCM resolution. The performance of the system is verified with a laboratory experiment. It is confirmed that the operation of the feed system is successful at a pressure level of 1.0×10?? torr in the vacuum chamber.
김연호(Yeun-Ho Kim) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.2
이 논문은 2000년대에 등장한 한국 포스트 다큐멘터리의 자기-재현 전략을 분석하여, 자기-재현 양식이 가진 영상적 글쓰기의 가능성들을 분석하는 것을 목적으로 한다. 이에 우선 다큐멘터리의 이론적 배경을 살펴보고, 빌 니콜스가 제시한 시적 양식과 수행적 양식에서 그 이론적 개념을 도출하여 포스트 다큐멘터리가 가진 자기-재현의 전략들을 세 가지로 구분하여 논의해보고자 하였다. 그 세 가지 자기-재현 전략은 자기-정동으로서의 재현, 자기-신체로서의 재현, 자기-시각적 재현으로 작품 분석을 통해 자기-재현의 가능성을 논의해보고자 하였다. 이 논의의 과정 속에서 자기-재현 양식이 어떻게 권력자의 체계로 이루어진 기존의 시각적 체계를 해체하고, 다양한 여성, 소수자가 등장할 수 있는 대안적 영상 글쓰기로 기능하는지 검토해보고자 한다. This thesis aims to analyze the possibility of the self-representation style of Korean post-documentaries in the 2000s and analyze the possibilities of the visual writing. First of all, this study examined the theoretical background of the documentary, and derived the theoretical concepts from the poetic style and the performance style presented by Bill Nichols, and divided the strategies of self-representation in the post documentary into three categories. The three strategies of self-representation were to discuss the possibility of self-representation through the analysis of works through self-representation as self-emotion, self-representation as body, and self-visual representation. In the process of this discussion, I will examine how self-representation style deconstructs the existing visual system consisting of the system of the power and functions as a alternative visual writing that can appear various women and minorities.
벤토나이트를 활용한 고로슬래그 기반 미세먼지 흡착형 경화체의 특성
김연호 ( Kim Yeon-ho ),경인수 ( Kyoung In-soo ),이상수 ( Lee Sang-soo ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.1
Fine dust, which is emerging as a global problem, attracted much attention recently in Korea. One of the reasons is that recent factory relocation and expansion in China affected the increase of domestic fine dust concentration due to the influence of the Yangtze river battalion and westerlies. Fine dust is a big problem not only in outdoor but also indoors. The room requires periodic ventilation and is also essential for improving indoor air quality. The fine dusts are designated as Group 1 carcinogens in WHO and the risk of fine dusts on the human body due to respiratory diseases is also increasing. In this study, the characteristics of the fine dust adsorption matrix are examined and the actual application direction is derived.
한국에서 비만 치료에 쓰이는 한약에 대한 연구 동향 보고: 2015년부터 2019년까지의 국내외 논문을 중심으로
김수전 ( Soo-jeon Kim ),서연호 ( Yeon-ho Seo ),이한솔 ( Han-sol Lee ),장호경 ( Ho-kyung Chang ),조재흥 ( Jae-heung Cho ),김고운 ( Koh-woon Kim ),송미연 ( Mi-yeon Song ) 한방재활의학과학회 2020 한방재활의학과학회지 Vol.30 No.4
Objectives This study has been conducted to verify frequently used herbs and herbal formulas to treat obesity in Korea during 2015 to 2019. Methods Publications related to treatment of obesity using herbal medicines from 2015 to 2019 were retrieved from 12 databases (PubMed, EMBASE, Scopus, China National Knowledge Infrastructure [CNKI], Koreanstudies Information Service System [KISS], National Digital Science Library [NDSL], Research Information Sharing Service [RISS], DBPIA, KMBASE, KoreaMed, KoreanTK, Oriental Medicine Advanced Searching Integrated System [OASIS]). Extracted articles were analyzed in terms of publication year, journal, and type of herbs. Results A total of 136 studies have been included in this study. 33 herbal formulaes and 129 herbs have been analyzed. Taeyeumjowui-tang was the most frequently studied herbal formulae and Ephedrae Herba was the most frequently studied herb. Ginseng Radix was the most frequently studied single herb in isolation from herbal formulae. Conclusions These results suggest that various herbs and herbal formulae can be used to treat obesity. Since this study includes every type of study, additional studies based on clinic are thought to be necessary. (J Korean Med Rehabil 2020;30(4):89-103)