http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
공기 중 니코틴 포집에 있어 국산 확산포집기와 능동포집기의 비교 평가
김효철,백남원,이경숙,김경란,김원,Kim, Hyo-Cher,Paik, Nam-Won,Lee, Kyung-Suk,Kim, Kyung-Ran,Kim, Won 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.5
It is widely known that Environmental Tobacco Smoke(ETS) is not good for health. ETS is composed of a lot of chemicals. So indicators are needed to evaluate the risk of ETS in air. One of the indicators is Nicotine. Active sampler has been used to measure nicotine concentration in air. The experiments were conducted to compare the active sampler method with diffusive sampler in exposure chamber and smoking areas, respectively. Sampling rate was 40.5 ml/min in exposure chamber. Experimental sampling rate (40.5 ml/min) was more than theoretical sampling rate (33.52 ml/min). And the higher was the concentration in air, the higher was experimental sampling rate. The average desorption, rate was 113.6%. The overall precision was 7.31 %. The overall accuracy was 18.96%, which were under NIOSH criteria. The average(GM) concentrations of nicotine by two sampling methods were $8.29{\mu}g/m^{3}$ (active sampler), $7.54{\mu}/m^{3}$ (diffusive sampler) in smoking area and smoking room. There was no regression between active sampler and diffusive sampler ($R^{2}=0.2397$). But slope, coefficient of determination was 1.017, 0.9292, respectively after removing outliers. And the slope (1.017) was close to the theoretical slope (1). In conclusion, this study indicated that diffusive sampler can be used to evaluate concentration of nicotine in air instead of active sampler.
절화장미 시설하우스에서 방제 작업시 농약의 피부노출 특성
김효철 ( Hyo Cher Kim ),김경란 ( Kyung Ran Kim ),이경숙 ( Kyung Suk Lee ),김경수 ( Kyung Su Kim ),조경아 ( Kyun Ah Cho ) 한국산업위생학회 2007 한국산업보건학회지 Vol.17 No.3
This study was conducted in cut rose cultivation field in Goyang to evaluate pesticide exposure of farmers and the relationship between the exposure and work environment/method for cut rose farmers. Dermal exposure was assessed with patch (thin chromatography layer paper), cotton glove by body parts during mixing and spraying works in which pyrethroid, organophosphate, carbamate pesticide were used in 4 cut rose greenhouses located in Goyang province, checking characteristics of environment/working method at the same time. Body parts assessed were as follows; glove: hand, patch: head, neck(front/back), chest, back, shoulder(right/left), upperarm(right/left), forearm(right/left), thigh(right/left), shin(right/left). Pesticides were analyzed using gas chromatography(NPD/FID) after extracting with ethyl acetate. Exposure amount differed according to pesticide type. But after standardizing with total net weight of pesticide sprayed, there were no significant difference among pesticides. There were significant difference in exposure amount among body parts(especially exposure amount of thigh, shin were more than the others), which means exposure happen not by pesticide dispersion in air but by contact with cut rose(leaf, branch) indirectly. Walking forward during spraying made farmers more exposed than waling backward, these results means contacts with leaves/branches made exposure happen in cut rose greenhouse also. As a result, pesticide exposure in cut rose greenhouse was related with contact of leaf/branch which pesticide remained in, which made exposure pattern (especially exposure amount) differ by body parts.
오이, 참외, 감자 작목에서의 정식, 수확작업시 총분진과 엔도톡신 노출 특성에 관한 연구
김효철 ( Hyo Cher Kim ),이경숙 ( Kyung Suk Lee ),채혜선 ( Hye Seon Chae ),민경두 ( Kyung Ran Kim ),김경란 ( Kyung Doo Min ),박윤석 ( Yoon Suk Park ) 한국산업위생학회 2013 한국산업보건학회지 Vol.23 No.4
Objectives: This study was conducted in order to evaluate personal and area exposure to airborne total dust and endotoxin during harvest and planting tasks at cucumber, yellow melon and potato farms Materials and Methods: Total dust was measured with NIOSH method 0500. Endotoxin were measured using a 37 mm glass fiber filter which was connected to an air pump calibrated to 2 LPM, and then analyzed with a Turbidmetric kinetic method. Results: The average(arithmetic mean) concentrations of total dust in the personal samples were 0.10- 3.81 ㎎/㎥for cucumbers, 0.21-1.19 ㎎/㎥for yellow melon, and 0.08- 2.72 ㎎/㎥for potato. There was a significant difference in the harvest task among the three farm types(p=0.019 of personal sample, p=0.048 of area sample), in which the air concentration for potatoes was higher than with cucumbers and yellow melons. Conclusions: It was found that potatoes(planting and harvest) should be considered the first priority for studying and reducing total dust exposure.
담배농가의 수확, 엮기작업 중 공기 중 니코틴 노출에 관한 연구
김효철 ( Hyo Cher Kim ),이경숙 ( Kyung Suk Lee ),채혜선 ( Hye Seon Chae ),박윤석 ( Yoon Seok Park ),민경두 ( Kyung Doo Min ) 한국산업위생학회 2012 한국산업보건학회지 Vol.22 No.3
Objectives: This study was conducted to evaluate personal and area exposure of airborne nicotine during harvest and weaving tasks in tobacco farms. Methods: Nicotine was measured with NIOSH method 2551 and Passive sampler which was validated in previous papers for area and personal sampling. Results: The average (geometric mean) concentrations of nicotine with two different tasks in personal sample were 6.5ug/ m3 (harvest), 32.6 ug/m3 (weaving) and in area sample were 0.8 ug/m3 (harvest), 57.2 ug/m3 (weaving). There was significant difference in area sample between harvest and weaving task (p=0.000). Also, there was significant difference with personal sample (p=0.000). Conclusions: It was found that weaving task should be considered to be the first priority for reducing nicotine exposure.
비닐하우스 작업자의 서열 스트레스 경감을 위한 보텍스 튜브 적용 냉각조끼 개발 및 평가
김인수(Insoo Kim),김경란(Kyungran Kim),서민태(Min-Tae Seo),박수인(Soo-In Park),차종진(Joung-Jin Cha),김효철(Hyo-Cher Kim),김경수(Kyungsu Kim) 대한인간공학회 2020 大韓人間工學會誌 Vol.39 No.1
Objective: This study developed working clothes using a vortex tube device to reduce the thermal stress of greenhouse workers, and evaluated the physiological effects and user satisfaction of the developed cooling vest. Background: During the summer, the inside of greenhouses causes increased physiological burden of workers due to a high temperature and humidity, causing accidents and lowering the work efficiency. As a measure to solve this problem, various working clothes to lower thermal stress have been researched and developed, but there were limitations in the development of working clothes appropriate for high temperature and humidity in greenhouses. Therefore, the development of a new agricultural working clothes is required to prevent thermal stress of workers in a warm environment. Method: To verify the thermal stress reduction effect of the farming vest applying a vortex tube device, a physiological evaluation test was performed for subjects in a climate chamber and greenhouse environment. In addition, the wearing satisfaction and field applicability of the developed working clothes was evaluated by farmers. Results: The results of analyzing the mean physiological reactions by body part in the climate chamber test, the skin temperature, mean temperature in the working clothes, mean humidity, and heartrate of the developed working clothes decreased by 2.9%, 8.1%, 35.5%, and 4.9%, respectively, compared to the existing working clothes. Furthermore, in the greenhouse environment test, the temperature in the working clothes and humidity of the developed working clothes decreased by 8.8% and 12.3%, respectively, compared to the existing working clothes. Furthermore, in wearing sense and user satisfaction survey for farmers in the field evaluation, the respondents showed positive responses. Conclusion: This study verified the effects of the agricultural working clothes applying the vortex tube technology had an effect of thermal stress reduction compared to the existing working clothes and its applicability to the agricultural work environment. Further practical research should be conducted considering the cultivation environment and the size of greenhouse facilities to develop working clothes for various work environments. Application: The results of this study are expected to be utilizable in the field of design of thermal stress reducing working clothes for greenhouse facility farm workers.
농업인의 안전활동을 위한 ICT 기반의 농업시설 안전관리 시스템에 관한 연구
김인수(Insoo Kim),김경란(Kyungran Kim),김효철(Hyo-Cher Kim),서민태(Min-Tae Seo),김경수(Kyungsu Kim),고명선(Myungsun Ko) 대한인간공학회 2018 大韓人間工學會誌 Vol.37 No.4
Objective: This study proposed a system for safe management of agricultural facilities whereby safety accidents of farmers are prevented from harmful factors of agricultural facilities and relevant hazardous situations, and efficient reaction is made possible when an accident occurs. Background: Recent development of information and communication technology (ICT) brought groundbreaking development of cutting-edge technologies such as the internet of things (IoT) and ubiquitous sensor network, and application of such technologies is expanding to the area of industrial safety. In particular, accidents from the hazardous environment surrounding agricultural facilities, say, from harmful gases, are frequently taking place and therefore development of services for safe farming work is required. Method: This study examined the types of safety accidents related to agricultural facilities occurring during farming work and designed a ICT-based system for safe management of accidents. Results: This study presents a model of such system and the model has the following functions: detection of harmful environment and conditions dangerous to farmers with sensor technologies; communication network technology for prevention of and fast coping with accidents; and user interface aimed at monitoring harmful environment and dangerous situations. Conclusion: The ICT-based system for safe management of agricultural facilities proposed in this study is expected to be applied as an application technology for safe agricultural activities. Application: The outcome of this study will be useful to develop a convergent ICTbased system for the prevention of safety accidents related to agricultural facilities.
생분해성 PLA 소재로 만든 일회용 축산 작업복의 쾌적성 평가
이효현(Hyo-Hyeon Lee),황경숙(Kyung-Sook Hwang),김도희(Do-Hee Kim),권주연(JuYoun Kwon),이경숙(Kyung-Suk Lee),채혜선(Hye-Seon Chae),김효철(Hyo-Cher Kim) 한국생활환경학회 2011 한국생활환경학회지 Vol.18 No.5
Livestock farmers have been working with loss of efficiency and threatening health for heat stress. Nevertheless work clothes for them have not been developed yet in terms of alleviation of heat stress. The purpose of this study was to develop working clothes that was eco-friendly and could alleviate heat stress of stock farming workers. The developed clothes were a biodegradable fabric made from PLA. The design was the same as the market product (disposable coverall type). The fabric test results showed that developed work wear fabric had proper safety (water resistance water-vapor resistance Surface wetting resistance). The physiological (rectal temperature skin temperature heart rate clothing microclimate total weight loss) responses and subjective responses (thermal sensation humidity sensation comfort) of human subjects (Male 4 26.5±0.6 yr 75.3±6.3 kg 176.6±4.1 cm 1.893±0.079 ㎡ BMI 24.1±2.1) were measured in the climate camber (28±1℃ 50±5%RH). The rectal temperature skin temperature heart rate and clothing microclimate were significantly lower in new working clothes than market product. The subjects felt less humid in developed clothes (p<.01). There were no significant differences in thermal sensation and comfort by working clothes fabric types although subjects felt hotter and less comfortable while wearing in market product. The results suggest that the PLA work wear is more effective in reducing heat stress than the other and the developed garment can contribute to save environment.