• 환경위생공학
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• 제14권4호
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• pp.99-109
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• 1999

Enteropathogenic Yersina enterocolitica is an important cause of human and animal disease. Phenotypic and genotypic characteristics currently used to identify Yersinia enterocolitica are not necessarily sufficient to differentiate pathogenic from non-pathogenic strains or to analyze the epidemiology of yersiniae at a molecular level. To improve the characterization of Yersinia enterocolitica, A total of 65 isolates of Yersinia enterocolitica were examined with bioserotyping, antibiotic susceptibilities, PFGE, PCR-ribotyping. Genomic DNA pattern generated by PFGE are highly specific for different strains of an organism and have significant value in epidemiologic investigations. The PFGE analysis of Not I-digested chromosomal DNA of Y. enterocolitica were performed with a CHEF Mapper(Bio-Rad, USA). Not I generated 19 restriction endonuclease digestion profiles(REDP). PCR-ribotyping, performed with primers complementry to conserved regions of 16S and 23S rRNA gene, generated 13 ribotypes. PCR-ribotyping can be considered a good technich for subtyping strains of Y.enterocolitica.

• 한국환경보건학회지
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• 제13권1호
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• pp.7-16
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• 1987

A study was carried out to determine the adequacy of springs as drinking water in summer and in winter separately. In this study, environmental sanitation, physio-chemical examination, bacteriologic contamination and the content of heavy metal were included. For this study, samples were collected from 8 springs which were located in the suburbs of Chunchon city. The following results were obtained. 1. There was the covering system in 1 out of 8 springs. 6 out of 8 springs showed contaminating source within lorn. 2. In physio-chemical test, six out of 8 springs were found to be unsafe for the legitimate standard of safty water. 3. Bateriologic examination clone during summer showed the evidence of coilform group at 7 out of 8 springs and during winter showed positivity at 3 out of 8 springs. 4. In the study for heavy metal content, all places showed high iron level beyond the standard level of salty water, and 4 places showed high contents of fluorine, mangan and lead.

• Journal of Preventive Medicine and Public Health
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• 제10권1호
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• pp.59-61
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• 1977

We are calling the erupting ground water as drugwater or mineral water in Korea and thinking those water is good for health from ancient. But most of them were used by mountainer as drinking water and food making water. Authors tried to investigate the evidence of contamination by user on the 10 erupting ground water and gained following results: 1. All of the mineral, waters on 10 area in Seoul were unfitable to drinking water standard. 2. In the view of the bacteriology 80% were contaminated by coliform group. 3. The highest value of the free carbon dioxide contents were 652.96 ppm at Sam Sun Mineral Water.

• 환경위생공학
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• 제3권1호
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• pp.69-74
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• 1988

This study was carried out to investigate water quality and pollution in the mineral water located in Seoul area. 15 sites were pointed out by random sampling and tested monthly for 14 items from July to December in 1986. 1. 14 sites were suitable for the drinking water standards but 1 site was not suitable for its pH (5.4). 2. The range of mineral element and concentration were as follows: $$K\;(1.1\pm0.19\~2.38\pm0.45ppm)$$ $$Na\;(5.14\pm0.32\~11.2\pm0.58ppm)$$ $$Ca\;(4.36\pm0.53\~14.44\pm0.53ppm)$$ $$Mg(1.58\pm0.32\~6.34\pm0.77ppm)$$ 3. Among the heavy metals, Fe, Zn, Mn, Cu, were detected small amount but Pb was not detected in all sample. 4. Fluoride concentrations were the range of $0.13\pm0.03\~0.42\pm0.03ppm$.

• 사상체질의학회지
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• 제21권2호
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• pp.115-122
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• 2009

1. Purpose : Sasang constitutional herb medicine is known as specific to his own's constitution. So Other constitutional herb medicine can induce side effects. This study investigates the cause and side effects of other constitutional herb medicine. 2. Methods : Literature study was carried out with the chapters including harm to Other constitutions in the books "Dongyisasangjinryoeuijeon(東醫四象診療醫典)" and "Joeuihak(朝醫學)". And the causes of side effects were studied in terms of herbology and movements of Qi in Sasang constitutional medicine. 3. Results : Herb medicines of Taeeumin's have the dispersing Qi energy, so Soeumin could have side effects mostly and some of Soyangin could do. Herb medicines of Soeumin's have the warming Qi energy, so Soyangin could have side effects like dermatitis or fever. Herb medicine of Soyangin's have cooling Qi energy, so Soeumin could have side effects of digestive system like diarrhea and some of Taeeumin could do. 4. Conclusion : It is thought that herb medicine is safe and less harmful when herb medicine is prescribed and taken according to his own constitution.

• 한국환경보건학회지
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• 제18권1호
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• pp.34-38
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• 1992

This study was carried out to investigate silicate-silicious in spring water and ground water. Samples were collected from 23 Stations of spring water and 2 Stations of ground water from August 1985 to July 1990 in Pusan area. Range and mean value of silicate-silicious of spring water and ground water were lower 2.12~22.70mg/l, 8.78mg/l, 13.90~19.05mg/l, 16.23mg/l than the criterion for drinking water as 50rng/l. The concentration of silicate-silicious had a great influence on precipitation, therefore it in summer was higher than in winter. The estimated regression line between chloride ion(x) and silicate-silicious(y) of the sampled water was y=19.366-0.604x(r=-0.7111).

• 한국환경보건학회지
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• 제15권1호
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• pp.63-73
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• 1989

The purposes of this study were to find out the heavy metal and antibiotic resistant coliform bacteria from mineral water and the resistant factors. For the experiment, mineral water samples were taken from A area and B area during the period from march to July, 1988. The results of the experiment were as follows 1. From mineral water, eleven resistant coliforms and one susceptible coliform were isolated. 2. All resistant isolates harbored diverse plasmids of ranged ca. 14-54kb. 3. Susceptible coliform harbored a only plasmid of ca. 2.8 kb. 4. All resistant isolates harbored common size of plasmid of ca. 14kb. 5. As a result of the transformation and agarose gel electrophoresis experiments, resistant factor was R-plasmid. In conclusion, It is suggested that heavy metal contamination of mineral water is the selective pressure for the plasmid encoding the tolerance. Heavy metal resistance, in some case, is present with antibiotic resistance. Therefore, heavy metal contamination of mineral water induces antibiotic resistant bacteria.

• 한국환경보건학회지
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• 제15권1호
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• pp.75-79
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• 1989

This study was carried out to investigate water quality of mineral water located in Nam san. 8 sites were pointed out by ramdom sampling and tested for 12 items in May and December 1988. The results were as follows: 1. The range of pH value in all sites was 5.4 - 6.8. 2. NH$_{3}$-N concentrations were suitable for drinking water criteria in winter season but site 1 was not for drinking water criteria. 3. NO$_{3}$-N concentrations were suitable for drinking water criteria in all samples. 4. Most of heavy metals were detected small amount, and espically zinc were detected much amount in all sites (0.01-0.32). 5. Coliform was not detected in all sites .in summer season but site 4 and 8 were detected in winter season.

• 생명과학회지
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• 제7권3호
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• pp.212-218
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• 1997

The studies were conducted to explore the dffects of growth or survival against various factors and plasmid profiles of 49 Y. enterocolitica isolated from springs water. In the presence of calcium hypochlorite, y. enterocolitica was entirely extinguished by exposure for 33 hours at 0.8 ppm concentration, and was grown up to 7% NaCl, but not at 95 NaCI. Y. enterocolitica was presented optimal growth at pH 7.0 anad 9.0, and not allowth the growth at pH3.0, 5.0 and 11.0. The optimal temperature for growth of Y. enterocolitica was 25$\circ$C and 35$\circ$C, and allowed the growth at refrigerant temperature, 5$\circ$C. Y. enterocolitica was remarkably decreased by exposure for 30 seconds under UV light, and entirely extinguished by exposure for 90 seconds. Therefore, UV light was effective for sterilization of Y. enterocolitica. Fourty-nine strains of Y. enterocolitica were harbor plasmid DNA of approximately 46 Kb molecular weight.

• 산학경영연구
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• 제12권
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• pp.119-138
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• 1999

본 연구는 정보흐름과 의견차이가 우리나라 주식시장과 KOSPI 200 선물시장의 거래량결정에 어떻게 복합적으로 영향을 미치는가에 관한 실증적 연구이다. 본 연구에서는 우리나라 선물시장 개장일인 1996년 5월 3일에서 1997년 9월 11일까지의 3개월물 선물의 종가 및 거래량, 동일 기간동안의 주식시장 932개 개별종목 종가 및 거래량, 동일 기간의 선물 미결제계약수와 대주잔고 일별자료를 이용하여 실증에 적합한 분석기법들을 사용하였다. 본 연구에서 제시하고 있는 실증분석 결과를 요약하면 다음과 같다. 첫째, 정보흐름이 선물시장 및 주식시장의 거래량 결정에 양(+)의 상관관계를 가지는 것으로 나타났다. 우리나라에서는 시장전반적 정보보다는 기업특수적 정보에 의해 거래가 많이 이루어지는 것이 특이하다. 둘째, 선물시장의 경우는 미결제계약수 변동이, 주식시장의 경우에는 대주잔고의 변동이 각 시장의 거래량을 결정하는 요인으로 상호 비교되었다. 이러한 분석 결과는 거래자들의 의견차이가 선물시장 및 주식시장의 거래량 결정에 양(+)의 상관관계를 가지는 것을 의미한다. 셋째, 주식 및 선물 거래량의 요일효과가 분명하게 나타나고 있으며 이러한 현상은 거래시간이 짧은 토요일에 더욱 두드러지게 나타났다. 넷째, 선물시장의 경우, 만기일이 가까울수록 거래량이 증가하는 현상 즉, 만기효과도 뚜렷히 나타나고 있다. 다섯째, 주식과 선물 거래량에 있어서도 시간의존적 이분산성을 보이는 ARCH효과가 분명히 존재함을 확인 할 수 있었다.