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Borate 완충용액에서 아연의 부동화 피막의 생성 과정과 전기적 특성
정세진,김연규,Chung, Se-Jin,Kim, Youn-Kyoo 대한화학회 2012 대한화학회지 Vol.56 No.1
Borate 완충용액에서 Zn의 부동화 피막이 생성되는 과정과 부동화 피막의 전기적 특성을 조사하였다. 이 때 생성되는 산화피막은 Mott-Schottky 식이 적용되는 n-형 반도체 성질을 보였으며, ZnO와 $Zn(OH)_2$로 구성되어 두 종류의 주개(깊은 주개와 얕은 주개)가 존재함을 알 수 있었다. We have investigated the growth kinetics and electronic properties of passive film of zinc in borate buffer solution. The oxide film formed in passivation process of zinc has showed the electronic properties of n-type semiconductor based on the Mott-Schottky equation. And it was found out that the oxide film consisted ZnO and $Zn(OH)_2$ was composed of deep and shallow donors.
Hydrodynamic and Atmospheric Effects on Corrosion of Zinc in Borate Buffer Solution
정세진,김연규,Chung, Se-Jin,Kim, Youn-Kyoo Korean Chemical Society 2011 대한화학회지 Vol.55 No.4
Borate 완충용액에서 전극의 회전속도와 용액에 녹아 있는 $O_2$가 Zn-RDE의 부식에 미치는 영향을 조사하였다. 아연의 부식은 RDE의 회전속도와 산소의 양에 크게 영향을 받았으며, 부식 반응구조로 가역적 1-전자 전이에 이어서 일어나는 불균등화 반응(disproportion reaction)을 제안하였다. It was investigated into the effects on zinc corrosion of the rotation speed of Zn-RDE and the oxygen concentration in borate buffer solution. Zinc corrosion was heavily influenced on the rotation speed of electrode and the oxygen concentration. We have suggested the disproportion reaction following the reversible one electron transfer as the corrosion mechanism of zinc.
2012~2017년 강원지역에서 채집된 모기의 계절적 발생소장과 플라비바이러스 감염률
정세진,고석현,고은미,임은주,김영수,이욱교,이동규,Chung, Se-Jin,Ko, Seuk-Hyun,Ko, Eun-Mi,Lim, Eun-Joo,Kim, Young-Su,Lee, Wook-Gyo,Lee, Dong-Kyu 한국응용곤충학회 2019 한국응용곤충학회지 Vol.58 No.2
2012~2017년까지 강원도 3개 시 군(춘천시, 강릉시, 횡성군)에서 채집된 모기는 총 6속 13종, 654,362마리가 채집되었다. 채집된 모기는 분류하여 얼룩날개모기속을 제외하고 종별, 채집일, 채집 장소에 따라 최대 50마리를 1개 실험군으로 reverse transcription-polymerase chain reaction, 염기서열 분석방법으로 플라비바이러스 감염여부를 조사하였다. 채집모기 276,224마리에 대해 7,721개 실험군을 검사한 결과 68개 실험군(0.9%)에서 플라비바이러스 유전자가 검출되었다. 검출된 플라비바이러스의 염기서열 분석결과 4개 실험군은 일본뇌염바이러스(Japanese encephalitis virus), 64개 실험군은 차오양바이러스(Chaoyang virus)로 확인되었다. 일본뇌염바이러스는 2012년 춘천시에서 채집된 2,728마리의 빨간집모기 중 1개 실험군, 2013년 횡성군에서 채집된 19마리의 동양집모기 중 1개 실험군, 2017년 춘천시에서 채집된 1,111마리의 빨간집모기 중 1개 실험군, 강릉시에서 채집된 빨간집모기 724마리 중 1개 실험군에서 검출되었다. 검출된 일본뇌염바이러스의 유전형은 모두 V형 바이러스였다. 차오양바이러스는 강원도 내에서 6년간 채집된 금빛숲모기 232,871마리, 5,055개 실험군을 대상으로 검사한 결과 63개 실험군에서 검출되었으며, 춘천지역에서 채집된 빨간집모기 585개 실험군 중 1개 실험군에서 검출되었다. 채집지역별 금빛숲모기의 차오양바이러스 감염률이 가장 높은 지역은 MIR (최소감염률) 0.32, MLE (최대우도법) 0.33 (CI 0.23~0.46) 감염률을 보인 춘천시였다. 그 뒤로 횡성군 MIR 0.30, MLE 0.30 (CI 0.16~0.52)과 강릉시 MIR 0.21, MLE 0.21 (CI 0.13~0.31)순이었다. 월별 금빛숲모기의 차오양바이러스 감염률은 10월에 MIR 0.38, MLE 0.38 (CI 0.07~1.25)로 가장 높은 감염률을 나타내었다. In total, 654,362 adult mosquitoes were captured using black light traps in Gangwon-do Province of the Republic of Korea from 2012 to 2017. The collected mosquitoes were identified to the species level, placed in pools of up to 50 mosquitoes each, by species and date of collection, and screened for flaviviruses using a reverse transcription-polymerase chain reaction assay. A total of 276,224 adult mosquitoes were grouped in 7,721 pools for virus testing, and 68 flavivirus positive pools (0.9%) were detected. Flavivirus-positive products were confirmed by DNA sequencing. Japanese encephalitis viruses were detected in single pools collected from Chuncheon (2012, 2017: Culex pipiens, 2,728 and 1,111 mosquitoes, respectively), Hoengseong (2013: Culex orientalis, 19), and Gangneung (2017: C. pipiens, 724). All the Japanese encephalitis viruses detected were revealed as genotype V. Chaoyang viruses were detected in 63 pools of 5,055 Aedes vexans nipponii and a single pool of 585 C. pipiens collected in Gangwon-do Province from 2012 to 2017. Chuncheon was the region with the highest minimum infection rates (MIR, 0.32) and maximum likehood estimate (MLE, 0.33; confidence interval (CI) 95%, 0.23-0.46) of A. vexans nipponii for Chaoyang virus, followed by Hoengseong (MIR 0.30, MLE 0.30, CI 0.16-0.52) and Gangneung (MIR 0.21, MLE 0.21, CI 0.13-0.31). Monthly MIR and MLE values of A. vexans nipponii for Chaoyang virus were the highest in October (MIR 0.38, MLE 0.38, CI 0.07-1.25).
정세진(Se-Jin Chung),손승현(Seung-Hyun Sohn),김철환(Chul-Hwan Kim),서인용(In-Yong Seo) 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.2
The establishment of a smart grid is one of countermeasures against global warming, and it is attracting attention as an alternative for energy efficiency. Accordingly, smart meter which is a key element in the construction of a smart grid is developing. The smart meter automatically measures the energy data used in real time and provides it to the energy suppliers and users. Additionally, It helps them to use energy efficiently. Smart meter communication between energy suppliers and users can be done in both directions by adopting AMI (Advanced Metering Infrastructure) method. However, there is no development related to the communication between smart meter devices. In this paper, the status of smart meter technology in domestic and foreign countries is investigated and the future directions of smart meter are suggested for grids.
배전용 개폐기 및 차단기 기술 현황과 미래 개발 방향 연구
정세진(Se-Jin Chung),손승현(Seung-Hyun Sohn),김철환(Chul-Hwan Kim),서인용(In-Yong Seo) 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.1
The Fourth industrial revolution become a big issue globally. This refers to changes in the industry that can intelligently control things by using artificial intelligence (AI), information and communication technology (ICT) convergence, and big data. This industrial revolution can be applied as a way to reduce greenhouse gas, for example, reducing use of fossil fuels according to use renewable energy resources such as wind power and solar power. Because of these changes in the power system, changes of distribution system equipment is also required. In this paper, we analyzed the present status and policy of domestic and foreign power industry and current trends of distribution switchgear and circuit breaker. Furthermore, the future development directions of distribution switchgear and circuit breaker are suggested.
정세진 ( Se Jin Jung ),변민광 ( Min Kwang Byun ),정우영 ( Woo Young Chung ),박무석 ( Moo Suk Park ),강신명 ( Shin Myung Kang ),김혜령 ( Hae Ryoung Kim ),신동환 ( Dong Hwan Shin ),김세규 ( Se Kyu Kim ),장준 ( Joon Chang ),김성규 ( 대한결핵 및 호흡기학회 2006 Tuberculosis and Respiratory Diseases Vol.61 No.6
Dermatofibrosarcoma protuberans (DFPS) is a locally aggressive skin tumor with a very low incidence in the general population. This tumor has a remarkable tendency to recur, However, a metastasis is rare. We report a case of DFPS with a pulmonary metastasis in 28-year-old man. The pulmonary metastasis developed 5 years after a complete resection of the primary skin tumor. We reviewed the clinical manifestations and treatment of DFPS, and highlight the need for a long-term follow-up examination for metastases after a wide excision of these lesions. (Tuberc Respir Dis 2006; 61: 573-577)