http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Myung Chul Seo (검색결과 491 건)
- 무료
- 기관 내 무료
- 유료
-
서은경,문덕환,박명희,김정원,황용식,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5
Objective : This study was conducted to prepare the fundamental data on desire of job transfer in hairdresser and prevent the health impairment of hairdresser due to occupational stress and musculosketetal symptoms. Methods and Material : The author surveyed the desire of job transfer and muscurlosketetal symptoms and occupational stress with self-reported questionnaire to 105 hairdresser who were working in beautyshop of Busan area and also 121 student in department of cosmestology as control group. Results : The results were as follows: 1. The rates of self reported symptom were 81.0% for shoulder, 72.4% for back, 67.6% for knee, 58.1% for hand in hairdresser, and 79.3% for shoulder, 71.9% for back, 66.9% for neck, 64.5% for hand and knee in student. 2. The rate of musculoskeletal symptom by NIOSH criteria was 36.2% in hairdresser, it was higher than student group(24.8%)(p<0.1). Occupational stress of the groups by occupational stress category was high as decision latitude, skill discretion, psycological job demand, decision authority in order. 3. The results of logistic regression of related varibles with desire of quitting job by logistic regression were statistical bordline significance between desire of quilting and social support(p<0.1). Conclusion : As above results, the author suggest to prepare the preventive program an musculoskeletal symptoms in hairdresser, especially shoulder, and also to control the occupational stress to hairdresser in beauty shop because occupational stress can be a factor of desire of quitting job.
-
최진영,민철기,명훈,황순정,서병무,이종호,정필순,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4
융비술시 실리콘 고무는 다루기 쉽고 조직 반응이 적어 현대 많이 돌출의 합병증이 생길 수 있다. 저자등은 이러한 실리콘의 단점을 보완할 수 있는 goretex를 사용하여 융비술을 시행하고 비첨에 대해서 자가연골을 이식하여 만족할 만한 결과를 얻었기에 goretex가 안면부 연조직의 증강을 위한 이식재료로 적합하다고 생각되어 문헌고찰과 함께 보고하는 바이다. Many different materials have been used to provide augmentation of the nasal dorsum. this include both autogenous and homogenous materials,as well as allografts. Silicone among the artificial materials has been most widely used. The silicone has some advantages and disadvantages. Goretex(expanded polytetra-fluoroethylene) which has widely used in vascular surgery and abdominal surgery can be used for facial soft tissue augmentation. The author presemts 2 cases of nasal augmentaion using goretex with literature review.
-
韓萬春,申明澈,張成煥,李基西 연세대학교 산업기술연구소 1979 논문집 Vol.11 No.1
A linear state equation of the first order differential form relating the load-frequency dynamic characteristics of interconnected power systems was derived for use in computer simulations. A new solution of the algebraic matrix Riccati equation for applications in quadratic optimal controllors and least-square state estimators determination was developed. The program for a dynamic state equation for two interconnected control areas was developed. The optimized load-frequency deviation was analysed and a numerical analysis was tried based on the computer simulation. It was shown that the dynamic response of the load-frequency could be optimized with the weighting factors R and Q The result was that the load-frequency and the tie-line deviation were visibly reduced.
-
Myung-Chul Seo,Hyeon-Suk Cho,Jun-Hwan Kim,Wan-Gyu Sang,Pyeong Shin,Geon Hwi Lee 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.1
In order to assess risk of high temperature damages about corn during reproduction stages in the future, we carried out analysis of climate change scenarios RCP (Representative Concentration Pathway) 4.5 and RCP8.5 distributed by KMA (Korea Meteorological Administration) in 2012. We established two indexes such as average of annual risk days of high temperature damage which express frequency and strengthen index of high temperature damage. As results of producing maps for 157 cities and counties about average of annual risk days of high temperature damage during total periods of scenarios, the risk of high temperature in RCP8.5 was evaluated to increase at all over nation except inland area of Gangwon province, while RCP4.5 showed similar to present, or little higher. The maps of annual risk days of high temperature damage with 10 years interval in RCP8.5 prospected that the risk for damaging corn growth would increase rapidly from 2030’s. The largest risk of high temperature damage in the future of RCP8.5 was analyzed at Changnyeong county located east-south inland area in Kyeongnam province, while the smallest of risk counties were Pyeongchang, Taebaek, Inje, and Jeongseon. The prospect at 12 counties which is large to produce corn at present and contains large plains have been showed that there will be only a little increase of risk of high temperature at Goesan, Yangpyeong, Hongcheon, Seosan, and Mooju until 2060’s. But considering strengthen index of high temperature damage, most regions analyzed would be prospected to increase rapidly after 2030’s. To cope with high temperature damage of corn in the future, we should develop various practical technologies including breeding adapted varieties and controlling cultivation periods.
-
Evaluating Soil Carbon Changes in Paddy Field based on Different Fraction of Soil Organic Matter
Myung-Chul Seo,Hyeon-Suk Cho,Jun-Hwan Kim,Wan-Gyu Sang,Pyeong Shin,Geon Hwi Lee 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.6
Organic matter plays important roles in soil ecosystem in terms of carbon and nitrogen cycles. Due to recent concerns on climate change, carbon sequestration in agricultural land has become one of the most interesting and debating issues. It is necessary to understand behavior of soil carbon for evaluating decomposition or sequestration of organic matter and analyzing potential carbon decomposition pattern about the kinds of organic matter sources to cope with well. In order to evaluate decomposition of soil carbon according to organic material during cultivating rice in paddy field, we treated organic material such as hairy vetch, rice straw, oil cake fertilizer, and manure compost at 50 × 50 × 20 cm blocks made of wood board, and analyzed carbon contents of fulvic acid and humic acid fraction, and total carbon periodically in 2013 and 2014. Soil sampling was conducted on monthly basis. Four Kinds of organic matter were mixed with soil in treatment plots on 2 weeks before transplanting of rice. The treatment of animal compost showed the highest changes of total carbon, which showed 7.9 g kg<SUP>-1</SUP> in May 2013 to 11.6 g kg<SUP>-1</SUP> in October 2014. Fulvic acid fraction which is considered to easily decompose ranged from 1 to 2 g kg<SUP>-1</SUP>. Humic acid fraction was changed between 1 to 3g kg<SUP>-1</SUP> in all treatments until organic material had been applied in 2014. From May to August in the second year, the contents of humic acid fraction increased to about 4 g kg<SUP>-1</SUP>. The average of humic fraction carbon at treatments of animal compost was recorded highest among treatments during two years, 2.1 g kg<SUP>-1</SUP>. The treatment of animal compost has showed the lowest ratio of fulvic acid fraction, humic acid fraction compared with other treatments. The average ratio of fulvic fraction carbon in soil ranged from 16 to 20%, and humic fraction carbon ranged from 19 to 22%. In conclusion, animal compost including wood as bulking agent is superior in sequestrating carbon at agricultural land to other kinds of raw plant residue.
-
Seo, Myung-Chul,Cho, Hyeon-Suk,Kim, Jun-Hwan,Sang, Wan-Gyu,Shin, Pyeong,Lee, Geon Hwi 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.1
In order to assess risk of high temperature damages about corn during reproduction stages in the future, we carried out analysis of climate change scenarios RCP (Representative Concentration Pathway) 4.5 and RCP8.5 distributed by KMA (Korea Meteorological Administration) in 2012. We established two indexes such as average of annual risk days of high temperature damage which express frequency and strengthen index of high temperature damage. As results of producing maps for 157 cities and counties about average of annual risk days of high temperature damage during total periods of scenarios, the risk of high temperature in RCP8.5 was evaluated to increase at all over nation except inland area of Gangwon province, while RCP4.5 showed similar to present, or little higher. The maps of annual risk days of high temperature damage with 10 years interval in RCP8.5 prospected that the risk for damaging corn growth would increase rapidly from 2030's. The largest risk of high temperature damage in the future of RCP8.5 was analyzed at Changnyeong county located east-south inland area in Kyeongnam province, while the smallest of risk counties were Pyeongchang, Taebaek, Inje, and Jeongseon. The prospect at 12 counties which is large to produce corn at present and contains large plains have been showed that there will be only a little increase of risk of high temperature at Goesan, Yangpyeong, Hongcheon, Seosan, and Mooju until 2060's. But considering strengthen index of high temperature damage, most regions analyzed would be prospected to increase rapidly after 2030's. To cope with high temperature damage of corn in the future, we should develop various practical technologies including breeding adapted varieties and controlling cultivation periods.
-
Myung-Chul Seo,Ki-Yeong Seong,Hyeon-Suk Cho,Min-Tae Kim,Tae-Seon Park,Hang-Won Kang 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.1
In order to evaluating physiochemical properties of soil under minimum tillage and direct seeding cultivation on dry rice paddy, we conducted to analyze the soil physiochemical characteristics in treatment with 2-year minimum tillage and dry direct seeding (2MT), 3-year minimum tillage and dry direct seeding (3MT), and tillage transplanting cultivation (TT). As results of analyzing soil organic matter (OM) contents with 2 cm soil depth of interval from surface to 30 cm, OM contents with surface soil from 0 to 2MT and 3MT were higher than TT, recorded 34.6, 28.1 and 19.8 g kg<SUP>-1</SUP>, respectively. But until 20cm in soil depth, it was not so large on the deviation of OM contents among the 3 treatments comparing with 2cm surface. Beneath 20 cm in soil depths, 2- and 3-year, OM contents in TT were distributed to be lower than 2MT and 3MT. The contents of total nitrogen in 2MT and 3MT were higher than the content in TT across the soil profile. Consequently, though minimum tillage and direct seeding farming is obviously the practice to saving of machinery work and labor, other practices such as continuously input OM should be needed to achieve carbon sequestration goal through minimum tillage and direct seeding on dry paddy.
-
-
-
Seo, Myung-Chul,Seong, Ki-Yeong,Cho, Hyeon-Suk,Kim, Min-Tae,Park, Tae-Seon,Kang, Hang-Won 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.1
In order to evaluating physiochemical properties of soil under minimum tillage and direct seeding cultivation on dry rice paddy, we conducted to analyze the soil physiochemical characteristics in treatment with 2-year minimum tillage and dry direct seeding (2MT), 3-year minimum tillage and dry direct seeding (3MT), and tillage transplanting cultivation (TT). As results of analyzing soil organic matter (OM) contents with 2 cm soil depth of interval from surface to 30 cm, OM contents with surface soil from 0 to 2MT and 3MT were higher than TT, recorded 34.6, 28.1 and $19.8gkg^{-1}$, respectively. But until 20cm in soil depth, it was not so large on the deviation of OM contents among the 3 treatments comparing with 2cm surface. Beneath 20 cm in soil depths, 2- and 3-year, OM contents in TT were distributed to be lower than 2MT and 3MT. The contents of total nitrogen in 2MT and 3MT were higher than the content in TT across the soil profile. Consequently, though minimum tillage and direct seeding farming is obviously the practice to saving of machinery work and labor, other practices such as continuously input OM should be needed to achieve carbon sequestration goal through minimum tillage and direct seeding on dry paddy.
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
