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Kim, Sungbum,Lee, Sangjae,Jeong, Seongkyeong,Lim, Myunghee,Song, Youngil,Ahn, Euisan,Jeong, Hoyong,Kim, Najin,Lee, Hyunjoo,Choi, Sungwoon 한국재난정보학회 2017 한국재난정보학회 논문집 Vol.13 No.1
지난 3년('13~'15)간 화학물질사고는 301건이 발생하였으며, 연평균 약 100건이 집계됐다. 이와 같은 화학사고는 인명과 환경에 많은 피해를 가져왔다. '13년~'15년에 발생한 운반차량 화학사고는 연평균 21건으로 전체 화학사고의 약 21%를 차지한다. 화학물질 운반차량의 사고는 지역에 관계없이 도로상에서 발생하고 있기 때문에, 관계기관의 대응 및 사후처리 등 체계적인 현장조사가 필요하다. 또한 화학물질 운반업자 및 화물주 등의 협조가 절대적으로 필요한 상황이다. 따라서, 본 논문에서는 화학물질 운반차량의 사고발생에 대한 현장조사 및 처리 절차를 조사 분석하였다. 이를 통해 운반차량의 화학사고에 대한 원인을 분석하고 현장조사와 처리절차를 체계적으로 마련하는 기초자료가 될 것으로 판단된다. 301 cases of chemical accidents occurred during the recent three years('13~15) recording about 100cases on average in Korea.. Chemical accidents has brought casualties and negative impact on the environment. The chemical accident by transporting vehicles during recent 3 years records 21 on average & takes about 21% of the whole chemical accident. Systematic investigation on chemical accident was needed by corresponding authorities since the transport accident has occurred on the road, all over the nation. For the systematic investigation on the accident scene by the corresponding authorities, the cooperation of transport companies and transport contractor is highly necessary. The investigation of such accident scene was examined and analyzed in this study. Through this study, the results can be basis to analyzed the cause of chemical accident by transporting vehicles and to prepare procedures for on-site investigation and handling systematically.
A Stepwise Split Power-Driving Scheme With Automatic Slope Control for EMC-Enhanced LIN Transceiver
Kim, Seungmok,Kim, Daewung,Lee, Kwangmuk,Lee, Myunghee,Kim, Jae Joon IEEE 2018 IEEE Transactions on Vehicular Technology VT Vol.67 No.3
<P>This paper proposes a split power-driving scheme for electromagnetic interference robust design and its automatic stepwise digital slope control for suppression of spectral emission. This analog–digital hybrid method gives power saving effect up to 24.4%, and also production reliability can be improved by utilizing a failure detection and recovery scheme. For feasibility of the proposed electromagnetic compatibility (EMC) scheme, a Local Interconnect Network transceiver prototype is fabricated in a 0.18-μm BCD process, and experimentally verified to provide EMC-enhanced operation with low-cost and low-power overheads.</P>
Kim, Min-Jeong,Kwon, Chang Hyuk,Kim, Dong-In,Im, Hee Su,Park, Sungil,Kim, Ji Ho,Bae, Jin-Sik,Lee, Myunghee,Lee, Min Seob Korean Society of Medical Genetics and Genomics 2015 대한의학유전학회지 Vol.12 No.2
Purpose: We developed and validated a fetal trisomy detection method for use as a noninvasive prenatal test (NIPT) including a Clinical Laboratory Improvement Amendments (CLIA)-certified bioinformatics pipeline on a cloud-based computing system using both Illumina and Life Technology sequencing platforms for 221 Korean clinical samples. We determined the necessary proportions of the fetal fraction in the cell-free DNA (cfDNA) sample for NIPT of trisomies 13, 18, and 21 through a limit of quantification (LOQ) test. Materials and Methods: Next-generation sequencing libraries from 221 clinical samples and three positive controls were generated using Illumina and Life Technology chemistries. Sequencing results were uploaded to a cloud and mapped on the human reference genome (GRCh37/hg19) using bioinformatics tools. Based on Z-scores calculated by normalization of the mapped read counts, final aneuploidy reports were automatically generated for fetal aneuploidy determination. Results: We identified in total 29 aneuploid samples, and additional analytical methods performed to confirm the results showed that one of these was a false-positive. The LOQ test showed that the proportion of fetal fraction in the cfDNA sample would affect the interpretation of the aneuploidy results. Conclusion: Noninvasive chromosome examination (NICE), a CLIA-certified NIPT with a cloud-based bioinformatics platform, showed unambiguous success in fetus aneuploidy detection.
A Study on the Improvement Plan of the Creation and Management of HEALING FORESTS
Myunghee Kim,Wookwang Cheon,Wonhyeon Lim J-INSTITUTE 2021 International Journal of Human & Disaster Vol.6 No.2
Purpose: The purpose of this study is to identify and analyze the current status of the creation and management of healing forests in Korea to derive the improvement plan. Methods: Based on the hypothesis that there will be differences in the creation and management of each operator, 10 items including annual status, regional status, location standard, size, facility status, number of visitors, number of program users, management entity, construction cost, and operation status were investigated and analyzed. Results: The number of healing forests has been steadily increasing, and the area of composition has been found to be large. By region, Jeolla-do has the largest number of places, 7 places (25%), Gyeonggi-do (30%) has the largest area of composition, and the average area of composition is more than twice as large as the national public. In the forest species of healing by location criteria, coniferous forests were preferred, and trees of age class IV had higher frequency and area. There is no difference in the accessibility of each operator to healing forests by size and facilities, and there were many healing forest paths as forest healing facilities. The average number of program users and average visitors per year has been decreasing since 2015. According to the status of each management entity, the Western Regional Forest Service manages the most with a total of nine national and seven public places, while the Eastern Regional Forest Service manages two places. The average creation cost of the healing forest is KRW 4.5 billion/place for the national healing forest, KRW 6.4 billion/place for the public healing forest, and in the case of the average creation cost per area, KRW 0.6 billion/ha for the national healing forest and KRW 0.9 billion/ha for the public healing forest, and the national healing forest is lower. In the case of operation status, the usage fees are in the order of public, national, and private, and the National Forest Service is operated by the Korea Forest Welfare Institute under the Korea Forest Service. Conclusion: ‘Based on the improvement plan for healing forest creation and management, the evaluation items for healing forest creation and operation to introduce a certification system for healing forests should be presented, research on revitalization measures should be conducted, and many people should benefit from forest welfare services.
Detection of Foodborne Pathogens and Analysis of Aflatoxin Levels in Home-made Doenjang Samples
Myunghee Kim,Yo Sep Kim 한국식품영양과학회 2012 Preventive Nutrition and Food Science Vol.17 No.2
Doenjang is a traditional Korean fermented soybean product that provides a major source of protein. In this study, a total of 18 different home-made doenjang samples were examined for the presence of foodborne pathogens and the total aflatoxin levels. Using an enzyme-linked immunosorbent assay to assess microbial quality and potential public health risk, we showed that total coliform levels in the doenjang samples ranged from 0 to 4.43±2.32 ×10<SUP>6</SUP> CFU/g, and the maximum limit of Bacillus cereus was 4.67±2.0×10<SUP>5</SUP> CFU/g. However, other foodborne pathogens, such as Staphylococcus aureus, Escherichia coli O157:H7 and Salmonella spp., were not detected among the tested samples. One of the samples (S3) showed a maximum limit of 42.2±9.1 μg/kg for aflatoxin levels, which was above the safety limit allowed by the Codex Alimentarius Commission (CAC) regulatory agency. Further research is necessary to determine whether and how doenjang safety can be improved via elimination/reduction of microbial contamination during fermentation and storage or using microbial starter cultures for its fermentation.