DO와 ORP를 이용한 축산폐수처리 SBR운전 제어

전병희 ( Byong Hee Jun ),김도환 ( Do Hwan Kim ),최은희 ( Eun Hee Choi ),김성신 ( Sung Shin Kim ),김창원 ( Chang Won Kim ),배현 ( Hyeon Bae ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5

A pilot scale SBR (working volume, 20㎥) treating piggery wastewater was operated with real wastewater. The operation mode of intermittent feeding of raw water and sub-cycle with repeating anoxic-aeration conditions were adapted to avoid the high-strength nitrogen inhibition. In sub-cycle, aeration time for nitrification was tried to be controled with ORP and/or DO meter. The characteristics of control was somewhat different between ORP and DO. DO showed potential ability to detect complete ammonia oxidation point by the first order differential values or absolute value. Especially, DO was proved to be useful for high loading rates. ORP indicated the ending point of nitrification by the plateau appearing after bending point. Because ORP can be utilized as a diagnosis tool by its good sensitivity for the microbial condition in reactor, the simultaneous application of DO and ORP was recommended for the stable control of SBR.

An Evaluation of Nutrition Support for Terminal Cancer Patients at Teaching Hospitals in Korea

Do Yeun Kim,Sang Min Lee,Kyoung Eun Lee,Hye Ran Lee,김지현,Keun-Wook Lee,Jong Seok Lee,Soon Nam Lee 대한암학회 2006 Cancer Research and Treatment Vol.38 No.4

Purpose: We wanted to analyze the use of nutrition support for terminal cancer patients, the effect of discussing withdrawal of nutrition support and do-not- resuscitate (DNR) consent on the use of intravenous nutrition during the patient’s last week of life and at the time of death.Materials and Methods: The study involved 362 patients with terminal cancer from four teaching hospitals, and they all died between January 1 2003 and December 31 2005. The basic demographic data, the use of intravenous nutrition during the patient’s last week of life and at death, discussion of terminal nutrition withdrawal and DNR consent were evaluated.Results:In the week before death, the patients received artificial nutrition such as total parenteral nutrition (31%), intravenous albumin infusion (25%), and feeding tube placements (9%). A discussion concerning withdrawal of nutrition support was limited to 25 (7%) patients. DNR consent was obtained from 294 (81%) patients. None of the patients were directly involved in any of these decisions. The discussion about withdrawal of terminal nutrition and DNR consent with the patient’s surrogates did not have any effect on reducing the use of parenteral nutrition.Conclusion: The majority of patients dying of terminal cancer were still given potentially futile nutritional support. Modern clinical guidelines and ethical education about nutritional support at the end of life care is urgently needed in Korean medical practice to provide proper administration of terminal nutrition for end of life care. (Cancer Res Treat. 2006;38:214-217)

Estimating population density of Nicrophorus quadripunctatus (Coleoptera: Silphidae) in Korea

Kim Do‐Sung,Cho Young‐Bok,Han Yong‐Gu 한국곤충학회 2020 Entomological Research Vol.50 No.11

Estimating the population density of organisms is of great concern to ecologists and much effort has been put into making accurate assessment of population levels in nature. We evaluated the trapping web (TW) method for the determination of the density of species of burying beetles. We found eight and six species of burying beetles at Beopjusa and Ssanggok‐ri areas, respectively. Most of the species population comprised Nicrophorus quadripunctatus, with densities of 65 and 195 per ha for Beopjusa and Ssanggok‐ri areas, respectively. Moreover, the flight intercept trap (FIT) method from 2003 to 2007 also revealed the same trend: Beopjusa temple (2928) to Ssanggok‐ri (5835). However, the differences in number of individuals were probably due to the differences in the methods and the length of the trapping period. The populations of N. quadripunctatus exist as metapopulations, making accurate assessment of the population densities extremely difficult. We hypothesized that the TW method could accurately estimate population densities extrapolated from patch population size per area.

The comparison of gene expression of inflammatory mediators between palmoplantar pustulosis and pompholyx

( Do Young Kim ),( Ji Young Kim ),( Hyojung Sohn ),( Taegyun Kim1 ),( Jihun Park ),( Beom Jin Lim2 ),( Sang Ho Oh ) 대한피부과학회 2012 대한피부과학회 학술발표대회집 Vol.64 No.3

State Indicator of Water Quality for Surface Water and Groundwater in Agriculture

Kim, Min-Kyeong,Jung, Goo-Bok,Ro, An-Sung,Choi, Seung-Chul,Choi, Won-Il,Kim, Eun-Jeong,Lee, Jong-Eun,Yun, Yeo-Uk,Kim, Kab-Cheol,Ko, Do-Young,Kim, Byeong-Ho,Kim, Hyeon-Ji,Park, Sang-Jo,Lee, Seong-Tae,H 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5

Indicators of environmental conditions qualitatively and quantitatively describe the state of the environment and natural resources, and the OECD (Organization for Economic Cooperation and Development) has initiated and suggested AEIs (Agri-Environmental Indicators) to assess trends over time of the effects of agriculture on the environment and the effectiveness and efficiency of agricultural and environmental policy measures since 1990's. This study aims to develop the state indicators of water quality for agricultural water, surface and groundwater, to evaluate the environmental impacts of agricultural activities and policies by qualifying the environmental levels of a nation. Status indicators were calculated according to the agricultural water quality standards of OECD and Korea, and their trends were analyzed over time. Particularly, nitrate ($NO_3{^-}$) status indicators of ground water in 2013 were significantly lower than the ones in 2000. Overall, the water quality indicators of surface water in 2013 were higher than the ones in 2012, except for pH and DO. The groundwater quality indicators in 2013 were lower than those of previous years. The optimal management indicators were calculated to assess agricultural surface water and groundwater quality. The findings of this study indicated that the state indicators could play a significant role to establish policies and procedures for managing and conserving water resources. This study also discussed water pollution caused by agricultural and industrial effluents.

State Indicator of Water Quality for Surface Water and Groundwater in Agriculture

Min-Kyeong Kim,Goo-Bok Jung,An-Sung Ro,Seung-Chul Choi,Won-Il Choi,Eun-Jeong Kim,Jong-Eun Lee,Yeo-Uk Yun,Kab-Cheol Kim,Do-Young Ko,Byeong-Ho Kim,Hyeon-Ji Kim,Sang-Jo Park,Seong-Tae Lee,Jae-Young Heo,S 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5

Indicators of environmental conditions qualitatively and quantitatively describe the state of the environment and natural resources, and the OECD (Organization for Economic Cooperation and Development) has initiated and suggested AEIs (Agri-Environmental Indicators) to assess trends over time of the effects of agriculture on the environment and the effectiveness and efficiency of agricultural and environmental policy measures since 1990’s. This study aims to develop the state indicators of water quality for agricultural water, surface and groundwater, to evaluate the environmental impacts of agricultural activities and policies by qualifying the environmental levels of a nation. Status indicators were calculated according to the agricultural water quality standards of OECD and Korea, and their trends were analyzed over time. Particularly, nitrate(NO₃<SUP>-</SUP>) status indicators of ground water in 2013 were significantly lower than the ones in 2000. Overall, the water quality indicators of surface water in 2013 were higher than the ones in 2012, except for pH and DO. The groundwater quality indicators in 2013 were lower than those of previous years. The optimal management indicators were calculated to assess agricultural surface water and groundwater quality. The findings of this study indicated that the state indicators could play a significant role to establish policies and procedures for managing and conserving water resources. This study also discussed water pollution caused by agricultural and industrial effluents.

디스크 레이저를 이용한 순 타이타늄의 비드용접시 비드색에 따른 용접특성

김지성(Ji-Sung Kim1),박수한(Su-Han Park),송무근(Moo-Keun Song),김종도(Jong-Do Kim) 한국마린엔지니어링학회 2018 한국마린엔지니어링학회지 Vol.42 No.7

장애인 태권도 선수의 여가활동에 대한 실태 분석

이성훈(Lee Sung Hoon),김용국(Kim Yong Kook),정현도(Jung Hyun Do) 세계태권도문화학회 2014 세계태권도문화학회지 Vol.- No.9

The purpose of this research is to provide basic data suggesting the direction of disabled taekwondo player's healthy leisure activity through the analysis on actual status of disabled taekwondo players' leisure activity. The subject was 41 maleㆍfemale players participating in the 32th national athlete meet for the disabled. Data of this research was analyzed by SPSS WIN 18.0 program. For the concrete statistical method, frequency analysis and cross analysis were done so as to examine general characteristics of research subject and differences of awareness on leisure activity. To examine interests in leisure activity and differences of satisfaction, t-test and one-way Anova were conducted. And, a positive analysis was verified in significance standard p<.05, p<.01, p<.001. As a result of Scheffe method as a post-hoc test, following conclusions were obtained. First, interests in leisure activity were higher as the time of participation in contest was higher and they learned taekwondo because they want to do. For the motives of participation in leisure activity, main factors were pleasure of life, relief of stress and emotional stability. Satisfaction for leisure activity was generally more than medium level, 3 scores. What are the most necessary for leisure activity were leisure of time, money(costs), friends to enjoy together and facility/location. Obstacles of leisure activity were insufficient money(costs), insufficient time, insufficient location/facility, so they had an awareness similar to the necessary of leisure activity. Therefore, players who have lots of times to participate in taekwondo contest and learned taekwondo because they wanted to do can be the group with active tendency. And, active group showed high demands of interests and satisfaction in leisure activity. Second, costs of monthly leisure activity were increased as current grade was higher and the number of participation in contest was more. Daily taekwondo training time was longer as they were women and the number of participation in contest was more. Daily leisure time of weekdays was longer as the number of participation in contest was more. Leisure time of weekends and holidays was less than 4 hours in more than half players. For the location of leisure activity, male players preferred leisure sports center and internet cafe and female players preferred leisure sports center and shopping/department store. Especially, group with lot of times of participation in contest showed long training time, much leisure activity time and high activity costs. It means disabled taekwondo players participating in many times showed long activity time of taekwondo, but participated in various leisure activities. Third, for the form of leisure activity, they mainly preferred rest/sleeping and leisure sports. For the favorite sports as leisure activities, male players preferred soccer, basketball and swimming and female players preferred soccer, inline skating and balling. For the people they enjoy leisure activity together, there were friends, colleagues and alone in may cases. Therefore, there were various activities preferred by gender. Fourth, for the activation measures of leisure activity, there were leisure of time, facility/location and cultivation of professional instructor in order. Therefore, leisure of time was insufficient as a factor which is the most necessary for leisure activity and hinders leisure activity. So, activity program which can be approached easily around us on weekdays and holidays should be developed.

간월호 퇴적토에서의 영양염류 용출 특성 분석

황순호 ( Soonho Hwang ),전상민 ( Sang Min Jun ),이도길 ( Do Gil Lee ),김석현 ( Seok Hyeon Kim ),이현지 ( Hyunji Lee ),김계웅 ( Kyeung Kim ),강문성 ( Moon Seong Kang ) 한국농공학회 2018 한국농공학회 학술대회초록집 Vol.2018 No.-

간월호는 서산시에 위치한 수혜면적이 6,446 ha에 이르는 담수화된 농업용 저수지로서, 해수 차단 후 수질이 지속적으로 악화되어 최근 들어 호내 수질이 농업용수 목표수질인 Ⅳ등급을 상회하는 등 농업용수로 활용에 어려움을 겪고 있다. 이에 따라 수질 악화 원인을 규명하기 위한 다양한 연구가 이루어지고 있으며, 수질 오염을 야기하는 상류 유역에 대한 연구뿐만 아니라 호내 퇴적물 관리 및 퇴적물로 인한 영양염류의 용출 문제에 대한 연구도 중요하다고 할 수 있다. 따라서 본 연구에서는 간월호 퇴적토로부터의 호내 수질 오염 기여도를 평가하기 위한 기초자료로서 용출 실험을 실시하였다. 용출 실험은 간월호 호내 3지점 (상류, 중류, 하류)에 대해 각각 호기성, 혐기성 실험을 2회 반복하였으며, 오염물질 조사 항목은 TOC, NH₄-N, NO₂-N, NO₃-N, PO₄-P, T-P, T-N, COD로 총 8항목이다. 간월호 용출 실험에 앞서 용출 실험 재료인 퇴적토의 간월호 퇴적물의 오염도를 확인하기 위하여, 입도 분석뿐만 아니라 강열감량, 유기물함량, T-N, T-P 항목에 대한 분석을 실시하였으며, 퇴적토는 풍건 및 2 mm 체 선별 후 지름 10cm, 높이 44cm의 유리컬럼에 충진하여 이용하였다. 현장 조건 중 호기 및 혐기 조건을 모의하기 위해, 호기성 조건은 DO의 일정 농도가 유지되도록 폭기 장치를 이용하였으며, 혐기조건은 알루미늄 호일로 컬럼 외부를 감싸 빛을 차단하는 동시에 질소가스를 계속 주입하여 혐기상태를 유지하였다.

혼합 식물추출물에 대한 차응애의 감수성 검정

김창승(Chang Seung Kim),김도익(Do Ik kim),국용인(Yong In Kuk),현규환(Kyu Hwan Hyun),김상수(Sang Soo Kim1) 한국차학회 2016 한국차학회지 Vol.22 No.1

The acaricidal activity of the mixed plant extracts of Gleditsia japonica var. koraien, Camellia sinensis, Cinnamomum cassia, and Lantana camara, toward the tea red spider mite, Tetranychus kanzawai Kishida was evaluated in laboratory bioassays. Treatments with mixtures 1 and 3 were effective against the adult females of T. kanzawai and yielded 87.0 and 85.6% adulticidal activity at 7 days after treatment, respectively. Mixture 3 revealed 78.7% adulticidal activity. However, mixtures 4 and 5 had lower adulticidal activity than the other treatments. The adult females of T. kanzawai treated with mixtures 1 and 3 produced only 22.5-22.8% as many eggs as did the control females. The residue of the plant extracts tested had low adulticidal activity (16.3-27.2%). All of the plant extracts tested were ineffective against the eggs of T. kanzawai. Treatments with mixtures 1 and 3 were effective against the nymphs of T. kanzawai and led to emergence rates of 20.7 and 25.3%, respectively. These results suggest that mixtures 1 and 3 might be used for the control of T. kanzawai.