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- 검색키워드
- 저자 : Moon Shik Zong ) (검색결과 56 건)
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鄭文植,李弘根,李容旭 서울大學校 保健大學院 1972 公衆保健雜誌 Vol.9 No.1
A study was carried out to find the sanitary condition of wells in Koje Island, Kyoungnam Province, from July 16, to July 30, 1971. Salinity was measured to check the seepage of sea water by the silver nitrate titration method and coliform groups were examined by the membrane filter method as well as the general sanitary state of wells and their surroundings. Main findings were as follows; 1. the average chloride ion concentration of 41 wells examined was 54.0ppm with the standard deviation of 31.8 which was below the maximum permissible concentration of 150.0ppm in drinking water. 2. the mean chloride ion at lower district wells was the highest of 69.9 ppm which looked to be influenced by the sea water. 3. no relation was found between the concentration of chloride ion and the pollution of wells which seemed to be more affected by the sanitary state of wells and their surroundings. 4. coliform groups were positive at 25 wells(61.0%) out of 41 and at 17 out of 21 of less than 2 m depth and no coliforms were found at the wells of more than 3 m one. Water-proof structure of 3 m depth was necessary to protect wells from pollution. 5. coliforms were found at all 15 wells within the 6 m distance from the pollution sources, but 3 out of 13 of more than 10 m one. 6. the rates of coliform positives were 92.8 percent at higher districts, 37.8 at lower ones and 27.2 at coastal ones.
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음식점 비흡연 종업원의 간접흡연 노출량 지표로써 이산화질소 이용
양원호,고영림,한인규,이정민,정문식,정문호 대한위생학회 2000 대한환경위생공학회지 Vol.15 No.3
There, is increasing evidence suggesting that passive smoking increases the risk of lung cancer and other disease. though the potential health effects of exposure to environmental tobacco smoke (ETS) is a controversial subject. Since smoking in restaurant is prevalent in Korea. The concern on passive smoking exposure of non smoking service workers has been. requested. ETS exposure of non smoking service workers at restaurant was assessed because they have spent their times in restaurant indoors. The purpose of this study was feasibility of nitrogen dioxide(NO_(2))as exposure marker of ETS. The results of the study were as follows: 1. Average NO_(2), concentrations in indoor and outdoor at restaurants were 57.01ppb(±12.4) and 54.29ppb(±9.54), respectively. Comparing office-workers, service-workers at restaurants were exposured highly. 2. The personal NO_(2) measurement as exposure marker of ETS could cause The exposure error because NO_(2) can he generated by combustion appliances in indoor. 3. Service-workers spent their most time (86.6%) in indoor. Mean time spent at restaurant indoors and at home was 9.4 hours and 10.9 hours. respectively. 4. Personal NO_(2) levels correlated with indoor NO_(2) concentrations of restaurant (r=0.70) and of their home (r= 0.52) rather than of outdoor NO_(2) concentration of restaurant (r=0.35). The causes of personal NO_(2) exposure of non-smoking service-workers were considered as smoking of guests and combustion appliance indoors. 5. Personal NO_(2) exposures were estimated using Monte-Carlo simulation and time-weighted model. Estimated personal NO_(2) level was 47.2ppb (±8.3).
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Chlorhexidine Gluconate Solution의 殺菌效果에 관한 實驗的 연구
Zong, Moon-Shik,Chong, Kyu-Kwan,Kim, Tae-Shik,Kim, Chung-Ock 한국환경보건학회 1987 한국환경보건학회지 Vol.13 No.1
Owing to the modification of testing methods of disinfectants or antiseptics, variations of bacteria according to characteristics of regions and resistance changes of bacteria, it is necessary that the bactericidal activities of disinfectants or antiscptics should be reevaluated nowadays. This study was carried out to reevaluate in the vitro bactericidal activity of Chlorhexidine gluconate solution. The results of experiment were summarized as follows. 1. For Chlorhexidine gluconate solution, minimal inhibitory concentrations of total bacteria taken from sewage water and Legionella bozemanii were $2.0\times 10^{-3}$%, $1.0\times 10^{-2}$%, respectively and were comparatively high. Minimal inhibitory concentration of Shigella flexneri was $1.6\times 10^{-4}$%, and was comparatively low. 2. For total bacteria taken from sewage water, it was killed within 15 minute in 0.1% Chlorhexidine gluconate solution when number of cells was $1.6\times 10^7$/ml. 3. For 0.0125% Chlorhexidine gluconate solution, decimal reduction times of Ps. aeruginosa, S. typhi, E. Coli were 45 sec, 25 sec, 18 sec repectively. For 1%, 0.125% Chlorhexidine gluconate solution, decimal reduction times of Legionella bozemanii were 10 sec, 45 sec respectively. 4. There was significant difference in the bactericidal activity of Chlorhexidine gluconate solution according to temperattire. Phenol coefficient of Chlorhexidine gluconate solution as using Staph. aureus was 100 and comparatively higher than that of other disinfectants. In comparison with other disinfectants, Legionella bozemanii was killed within 5 minutes in 0.02% KMnO$_4$ and 0.125% Chlorhexidine giuconate solution but was not killed within 3 minutes in 1% 0-cresol, 1% Phenol.
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Chlorhexidine Gluconate Solution 의 殺園效果에 關한 寶驗的 硏f究
鄭文植(Moon Shik Zong),鄭圭寬(Kyu Kwan Chong),金泰植(Tae Shik Kim),金貞天(Chung Ock Kim) 한국환경보건학회 1987 한국환경보건학회지 Vol.13 No.1
Owing to the modification of testing methods of disinfectants or antiseptics, variations of bacteria according to characteristics of regions and resistance changes of bacteria, it is necessary that the bactericìdal activities of disinfectants or antiscptics should be reevaluated nowadays. This study was carried out to reevaluate in the vitro bactericidal activity of Chlorhexidine gluco. nate solution. The results of experiment were summarized as follows. 1. For Chlorhexidine gluconate solution, minimal inhibitory concentrations of total bacteria taken from sewage water and Legionella bozemanii were 2.0 x 10-3%, 1.0 x 10-2%, respectively and were comparatively high. Minimal inhibitory concentration of Shige/la flexneri was 1.6 x 10-4%, and was comparatively low. 2. For total bacteria taken from sewage water, it was killed within 15 minute in 0 .1 % Chlorhexidine gluc‘)nate solution w hen number of cells was 1 .6 x 107 fm1. 3. For 0.0125% Ch10rhexidine gluconate solution, decimal reduction times of Ps. aeruginosa. S. typhi. E. Coli were 45 sec, 25 sec, 18 sec repectively. For 1%, 0.125% Chlorhexidine gluconate solution, deciml!l reduction times of Legionella bozemanii were 10 sec, 45 sec respectively. 4. There was significantdifference in the bactericidal activity of Chlorhexidine gluconate solution according to temperature. 5. Phenol coefficient of Chlorhexidine gluconate solution as using Staph. aureus was 100 and comparatively rugher than that of other disinfectants. 6. In comparison with other disinfectants‘ Legionella bozemanii was killed witrun 5 minutes in 0.02% KMn04 and 0 .1 25% CWorhexidine gluconate solution but was not ki1Ied within 3 minutes in 1% O-cresoI. 1 % PhenoI.
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鄭文植(Moon Shik Zong),鄭文鎬(Moon Ho Chung) 한국환경보건학회 1986 한국환경보건학회지 Vol.12 No.1
In order to offer an basic data for the prevention of pesticide poisoning this study was carried out at Chun Song County, Kang Won Province for the period from 1983 to 1985. The major results are as follows : 1. The rates of those who read an explanation of pesticides before scattering are 76.5% in 1983, 82.6% in 1984, 85,8 % in 1985 but among these people the rates of those who practice as explanation are 78.2%, 72.2%, 4 1.4% every year. 2. More than 50% of those who scatter pesticides feel pesticide poisoning. 3. 까le difference in average time of pesticide scattering and pesticide poisoning reveals statistica1 significance (P < 0.05). 4. Among those who feel pesticide poisoning, 85.5% in 1984, R7 .3% in 1985 are due to insecticides.
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鄭文植(Moon Shik Zong),鄭文鎬(Moon Ho Chung),白南園(Nam Won Paik),韓敎熙(Don Hee Han) 한국환경보건학회 1989 한국환경보건학회지 Vol.15 No.1
This study was carried out to evaluate the effect of environmental health between the mass irnprovement and the partial improvement of privies in rural area. For this study, three villages were selected in Chun Sung County, Kangwon Province. “ A village was all improved with the three septic tank privies(I 00%), “ B village was improved partially( 42%) and “ C village was not improved at al1. ln this comparative study, helminthic ovum positive rates of human intestines, soils and vegetables, drinking water quality , and environmental health recognition of residents were included. The following results were obtained. 1. ln helminthic ovum positive rates of human in testines‘ soils and vegetables, “ A village revealed more decrease significant1y than “ B and “ C village, but there was no significant difference between “ B and “ C . 2. ln drinking water quality, there was no difference among “ A , “ B and “ C communities. 3. Also, in health recognition of residents, there was no significant difference in three communities.
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