여수국가산업단지 인근 지역 대기오염물질 농도에 영향을 미치는 요인분석

김민영,변정훈,이영훈,이건영,한지은,이예림,임지현,장봉기 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2

Eight monitoring stations in the Yeosu National Industrial Complex will determine the concentration of air pollutants measured every hour in 2019, analyze what factors affect them, and how they correlate with the air pollutant measurements. Six air pollutants (SO2, NO2, O3, CO, PM-10 and PM-2.5) measured at eight monitoring stations around Yeosu National Industrial Complex (Seogang-dong, Wolnae-dong, Munsu-dong, Yeocheon-dong, Deokchung-dong, Hwayang-myeon, Yulchon-myeon, Samil-dong) the measurement data for each hour of the year were downloaded to analyze the concentration by weather condition, time zone, season, separation distance from Yeosu Industrial Complex, and separation distance from Gwangyang Industrial Complex. SO2, NO2, and CO concentrations were significantly higher in winter, significantly lower in summer, and O3, PM-10, and PM-2.5 concentrations were significantly higher in spring. SO2, CO, PM-10, and PM-2.5 concentrations were significantly higher between 10 a.m. and 12 p.m., NO2 concentrations were significantly higher between 7 a.m. and 9 a.m., and O3 concentrations were significantly higher between 13 p.m. and 15 p.m.(p<0.001). The concentration of air pollutants (SO2, NO2, CO, PM-10, PM-2.5) excluding O3 was found to have a negative (-) correlation with weather condition, and in the case of O3, it was found to have a positive (+) correlation with PM-10, PM-2.5, temperature and wind speed. It was confirmed that the concentration of air pollutants emitted from the Yeosu National Industrial Complex differs depending on the season, time and distance to the industrial complex. This study aims to establish measures to minimize health damage to residents living relatively close to the industrial complex and contribute to the establishment of management and response measures according to the properties of substances to reduce the concentration of air pollutants in the future.

석면함유 슬레이트 지붕 물받이 퇴적물 중 석면 섬유 함유율

임지현,한솔민,김현석,신유민,박시은,허정윤,김민영,장봉기 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2

This study attempted to determine the degree of asbestos release from the aging slate roof by comparing the asbestos content in the slate roof rain gutter with a colored steel plate (tin plate) over the slate roof. Four slate roof houses located in Haengmok-ri, Asan-si, Chungcheongnam-do, and one house constructed with a colored steel plate on the slate roof were selected to collect the sediment of the roof rain gutter. The asbestos fiber content was calculated by a point counting method using a polarization microscope after pretreatment with conversion treatment and hydrochloric acid treatment. The average asbestos content of the four slate roof rain gutter were 1.89%. However, asbestos was not detected in the Slate covering roof rain gutter, which were constructed on the slate roof. Asbestos fiber content was the highest at 2.89% in the slate roof rain gutter installed in 1976, followed by 2.44% in 1953. From the above results, it is necessary to minimize secondary damage as asbestos fibers released from slate roof houses to the surrounding atmosphere or leaked from slate roofs as rainwater may cause soil pollution and seriously affect residents' health. Although covering with colored steel plates (tin plates) has been shown to prevent the leakage of asbestos fibers to some extent, it is believed that a policy alternative to remove the slate roof as soon as possible is needed to solve the fundamental problem.

다발성 골수종에서 저용량 thalidomide, cyclophosphamide, dexamethasone (TCD) 요법의 효과

류충헌,정재현,고정해,장제혁,박영진,최규남,박봉수,이상민,주영돈 인제대학교 2008 仁濟醫學 Vol.29 No.-

Background and Objectives : The immunomodulatory drug thalidomide can inhibit angiogenesis and induce apoptosis in experimental models. It can also induce marked and durable response in newly diagnosed myeloma patients. Thalidomide has been used at doses ranging from 200 to 800 mg with significant toxicity. No data are available on the impact of low-dose thalidomide, cyclophosphamide and dexamethasone as initial therapy for myeloma patients. Design and Methods : To address this issue, newly diagnosed myeloma patients were treated with 50 mg/day thalidomide continuously and cyclophosphamide 150 mg/m², days 1-4 and dexamethasone 20 mg/m², days 1-5 and day 15-19, every month. Between October 2005 and October 2006, 14 patients (median age 54.5 years) were treated with low-dose thalidomide, cyclophosphamide and dexamethasone. Results : After a minimum of two cycles of treatment, 5 patients (55.5%) showed a partial remission. After four cycles of treatment, 10 patients (83.3%) showed a partial remission (n=6) and complete remission (n=4). After a median follow-up of 15.4 months, 1 year overall survival rate was 82.0%. Thalidomide was well tolerated without serious toxic effects. Conclusions : The combination of low-dose thalidomide, cyclophosphamide and dexamethasone demonstrates favorable response rate and 1 year overall survival rate in newly diagnosed myeloma. Severe toxicities were not seen with this combination.

Red Ginseng Inhibits Exercise-Induced Increase in 5-Hydroxytryptamine Synthesis and Tryptophan Hydroxylase Expression in Dorsal Raphe of Rats

Min, Yeong-Ki,Chung, Seok-Hee,Lee, Jong-Soo,Kim, Sung-Soo,Shin, Hyun-Dae,Lim, Baek-Vin,Shin, Min-Chul,Jang, Mi-Hyeon,Kim, Ee-Hwa,Kim, Chang-Ju WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2003 東西醫學硏究所 論文集 Vol.2003 No.-

Red ginseng has been used as an ergogenic aid for endurance exorcise. In this study, the effect of aqueous extract of Red ginseng on the endurance in treadmill exorcise and 5-hydroxytryptamine (serotonin) synthesis and tryptophan hydroxylase expression in the dorsal raphe of rats were studied. Rats receiving Red ginseng showed increased time to exhaustion for treadmill running. and Red ginseng treatment inhibited exorcise-induced increases in 5-hydroxytryptamine synthesis and tryptophan hydroxylase expression in the dorsal raphe. These results suggest that the suppressive effect of Red ginseng on serotonin level during exercise is a possible ergogenic mechanism of Red ginseng.

Cascaded Neural Network Framework for Classification of Functional piRNAs

Yeong Min Jang(장영민),Mobeen Ur Rehman(레흐만 모빈우르),Kil To Chong(정길도) 대한전자공학회 2022 대한전자공학회 학술대회 Vol.2022 No.4

Estimation and Prediction-Based Connection Admission Control in Broadband Satellite Systems

Jang, Yeong-Min Electronics and Telecommunications Research Instit 2000 ETRI Journal Vol.22 No.4

We apply a "sliding-window" Maximum Likelihood(ML) estimator to estimate traffic parameters On-Off source and develop a method for estimating stochastic predicted individual cell arrival rates. Based on these results, we propose a simple Connection Admission Control(CAC)scheme for delay sensitive services in broadband onboard packet switching satellite systems. The algorithms are motivated by the limited onboard satellite buffer, the large propagation delay, and low computational capabilities inherent in satellite communication systems. We develop an algorithm using the predicted individual cell loss ratio instead of using steady state cell loss ratios. We demonstrate the CAC benefits of this approach over using steady state cell loss ratios as well as predicted total cell loss ratios. We also derive the predictive saturation probability and the predictive cell loss ratio and use them to control the total number of connections. Predictive congestion control mechanisms allow a satellite network to operate in the optimum region of low delay and high throughput. This is different from the traditional reactive congestion control mechanism that allows the network to recover from the congested state. Numerical and simulation results obtained suggest that the proposed predictive scheme is a promising approach for real time CAC.

Photoionization of N,N,N',N'-Tetramethyl-p-phenylenediamine in Polar Solvents

Min Yeong Lee,Du Jeon Jang,Minyung Lee,Du-Jeon Jang,Dongho Kim,Sun Sook Lee,Bong Hyun Boo Korean Chemical Society 1991 Bulletin of the Korean Chemical Society Vol.12 No.4

The photoinduced electron transfer reactions of N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) in various polar solvents were studied by measuring time-resolved fluorescence. The temperature dependence on the fluorescence decay rate in acetonitrile, methanol, ethanol and buthanol was carried out to obtain the activation energy and Arrehnius factor for the photoinduced electron transfer reaction. It was found that as the dielectric constant of the solvent increases, the activation energy and the reaction rate increase. This implys that the Arrehnius factor is important in controlling the photoinduced electron transfer reaction rate. In water, TMPD exists in three forms (cationic, protonated and neutral forms) due to the high dielectric constant and strong proton donating power of water. The photoinduced electron transfer reaction was found to be very fast (< 50 ps) and also the long liverd component in the fluorescence decay profile attributable to the photoexcited protonated form of TMPD was observed. Probably, the reaction pathway and the reaction coordinate seem to be different depending on the solvents studied here.

A Priority Scheme for IEEE 802.11 Wireless LAN

Jang, Yeong-Min The Korea Institute of Information and Commucation 2000 韓國通信學會論文誌 Vol.25 No.12

This paper investigates a priority scheme for IEEE 802.11 Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) protocol in order to provide short access times for priority frames (e.g. time-deadline traffic) even when the overall traffic on the wireless channel is heavy. Under the compatibility constraint for the IEEE 802.11 wireless LANs, two priority systems are simulated: no priority (current IEEE 802.11 standard) for time-deadline traffics and dynamic time-deadline priority. We evaluate algorithms to improve the time-deadline traffic performance using discrete event simulation (DES)

젊은 여성의 웨이트 트레이닝을 통한 운동가치의 Q방법론적 분석

장민영(Jang, Min-Yeong),조현익(Cho, Hyun-Ik),전용균(Jeon, Yong-Gyun) 한국웰니스학회 2018 한국웰니스학회지 Vol.13 No.3

이 연구는 웨이트 트레이닝을 참여하는 20~30대 여성들을 대상으로 어떠한 운동 가치를 갖는지 Q방법론을 통해 분석을 시도하였다. 연구대상은 강남구 W피트니스에서 연구자에게 웨이트 트레이닝을 배우는 여성 10명으로 선정하였으며, 자료 수집은 관련 문헌과 선행연구, 서적을 조사하고 전문가와 면담 등을 통해 수집된 자료를 이용하여 총 30문항을 추출하였다. 최종분석에는 QUANL프로그램을 이용하여 분석한 결과 운동지향형 유형이 나타났으며 다음과 같은 결론을 얻었다. 운동지향형 유형에서 긍정적으로 생각하는 가치는 신체적 가치, 심미적 가치, 오락적 가치이다. 웨이트 트레이닝은 근육량과 체력, 활동량을 향상시키고 체지방을 감소시키며 신체발달에 도움이 된다. 또한 웨이트 트레이닝을 통해 훈련된 몸을 보며 심미적으로 자신감을 얻는 긍정적인 반응을 얻게 되었으며 운동을 통해 기분전환과 건전한 여가 활동의 수단으로 이용될 수 있다고 나타났다. 이와 반대로 부정적으로 생각하는 가치는 경제적 가치, 품성적 가치, 사교적 가치이다. 모집단의 구성이 선수가 아니기 때문에 운동을 통한 경제적인 수입이나 연봉, 경제적 능력은 크게 의미 부여를 하지 않으며 웨이트 트레이닝은 자기 만족감을 위한 개인운동으로 다른 사람과의 내기에는 부정적으로 나타났다. 이러한 연구 결과를 바탕으로 웨이트 트레이닝을 통해 20~30대 여성들의 신체적 효과, 내면의 아름다움, 건전한 오락 활동으로 이용할 수 있는 긍정적인 운동가치에 대한 정보를 알 수 있었다. This research was designed to analyze how women in their 20`s and 30`s who participate regularly in weight training perceive the value of exercise using Q methodological research. Ten women who take lessons from the researcher at W fitness center in Gangnam were chosen as the subjects of study. 30 statements for survey were obtained by studying related documents, preceeding research, and books and by interviewing an expert. For the final analysis, QUANL program was used to acquire the exercise-oriented type that leads to the following conclusion. Physical, aesthetic, and recreational values are determined positively by the exercise-oriented type. Economic, characteristic, and association values are thought as negative values. The subjects of study are not professional athletes so they did not give much value on exercise as an economic source of revenue, nor on annual salary and economic ability. Based on these results, weight trainers need to give information about positive exercise values that can be used for physical effects, inner beauty, and a healthy leisure activity by women in their 20`s~30`s through weight training, and also find easy ways to use weight training and develop programs.

영상처리와 벡터 플롯을 이용한 기저동맥의 굴곡률 측정 알고리즘 연구

장영민(Yeong-min Jang),정길도(KIL TO CHONG),김지홍(JEEHONG KIM) 대한전기학회 2021 정보 및 제어 심포지엄 논문집 Vol.2021 No.4