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鄭熺坤 최신의학사 1975 最新醫學 Vol.18 No.4
A survey on the menstruation of employee in textile plant was carried out on 1, 247 female in Kwang-ju city during the period from September 20 to September 301'973. The summarized results are asfollows: 1. An average age of sexual interest began was observed 16.5. The earlist age of sexual interest began was 9 (0.3 and the latest age 22 (0.1 % ) 2. An average age of menarche was observed 15.3. The earliest age of menarche was 10(0.2%) and the latest age 19 (0.9%). And then, season of menarche was observed in order of Autumn (32.9%), 3 Winter (25.3%), Summer (22. 1 %), and Spring(17.3%). 3. Menstrual cycle was observed regular in 30. 1%,and irregular in 62.9%; As to the average menstrual cycle was 28.4 days among the employee of regular menstrual cycle. 4. Types of menstrual cycle were varied in order of 30 days(28.5%), 28 days(26.6%), 25 days(15-4%), 35-days (8.8%), and 20 days (5.1%). 5. Length of period with blood flow was observed average 4.5 days in the before employment, and 4.3 .days inthe after employment. 6. Comparing the degree of amount of blood flow before employment, the answer was "less than before" in 41.5%, "same as.before" in 30.6%, and "more than before" in 8.6%. 7. Comparing the degree of subjective symptoms complaints during- the menstrual period before employment, the answer were "severer than before" in 49.7%, "same as before" in 38.8%, and "milder than before" in 5.4%. 8. Four main subjective symptoms complaints during the menstrual period were occupied in order of lumbago (38.3%), depression (35.2%)abnormal fatigue (33.6 % ), and abdominal pain (32.2%). 9.Working efficiency during the menstrual period was occupied slight diminution in 47.8%; "same as normal", in--26.9%;and "severe diminution" in 7%.
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정희곤 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.1
1991년부터 1993년까지와 1995년부터 1997년까지 각각 3년 동안 광주시 근교지역 각 농가에서 광주시 보건환경연구원 가축위생연구부에 병성감정을 의뢰한 원유를 대상으로 젖소 유방염의 발생양상과 원인균의 항생제에 대한 감수성의 경시변화를 조사분석한 결과, 체세포수검사 양성율은 11.1%로부터 8.0%로 감소되었으며 원인균의 발생율은 Staph. sp.가 49.7%이었고 다음은 E. coli가 23.2%, Strep. sp.가 10.4%, Bac. sp.가 7.2%의 순이었는데, 이의 항생제에 대한 감수성은 전반적으로 크게 저하되었다. Bovine mastitis was examined by use of the rolling ball viscosity test in Kwang-ju area. Antibiotic susceptibility of isolated pathogens from raw milk was investigated by the disc method. Positive rate of somatic cell counts (over 500,000 cells/ml) was decreased from 11.1% in 1991∼1993 to 8.0% in 1995∼1997. Isolated mastitis-causing-pathogens were identified as Staphylococcus sp. (49.7%), Escherichia coli(23.2%), Streptococcus sp. (10.4%), and Bacillus sp.(7.2%). Antibiotic susceptibility of isolated pathogens to almost antibiotics was decreased.
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젖소유방염, 돼지 및 닭의 설사중에서 분리한 대장균의 S-R 변이와 항균 요법제의 감수성
정희곤 한국환경보건학회 1997 한국환경보건학회지 Vol.23 No.3
1992년부터 1995년까지 약 4개년 동안 전남 지역에서 사육하고 있는 가축의 유병률을 조사한 결과, 유방염으로 의심이 되는 젖소 970두 중에서 180두(18.6%)가 유방염에 이환되었으며, 돼지 2,400두 중에서 84두(3.5%)가 설사증에 이환되었고, 닭 1,010수중에서 9수(0.9%)가 설사증에 이환되었다. 대장균의 분리율을 조사한결과, 유방염에 이환되어 있는 젖소 180두중 37두(20.6%)에서 대장균이 분리되었으며, 설사증에 이환되어 있는 돼지 84두중 51두(60.7%)에서 대장균이 분리되었고, 설사증에 이환되어 있는 닭 9수중 5수(55.6%)에서 대장균이 분리되었다. Acriflavine을 이용하여 대장균의 S-R변이를 조사한 결과, S-R변이는 mercuric chloride, cysteine, caffeine, glucose, nicotine 등의 순으로 나타났는데, 이중 mercuric chloride가 가장 감수성이 높았다. 대장균의 항균요법제에 대한 감수성은 naxcel, linsmycin, cephalexin, gentamycin등이 높은 감수성을 나타내었는데, S-R변이 후에는 감수성이 일반적으로 저하되는 경향이었다.
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건강한 산양 및 개에서 분리한 Clostridium perfringens의 항생제에 대한 감수성
정희곤 한국식품영양학회 1998 韓國食品營養學會誌 Vol.11 No.3
1995년 12월부터 1996년 11월까지 약 1년간 광주시 및 전남지역에서 사육하고 있는 건강한 산양 20두와 건강한 개 30두, 총 50두로부터 분변을 채취하여 5균주의 C. perfringens을 분리 동정하였다. C. perfringens의 분리율은 건강한 산양 20두 중에서 3균주(15.0%)가 분리되었으며 건강한 개 30두 중에서 2균주(6.7%)가 분리되었다. C. perfringens의 항생제에 대한 감수성은 ampicillin, baytril 및 penicillin에 대해서는 분리균의 80%가 감수성을 나타내었고, cephalothin에 대해서는 60%가 감수성을 나타내었으며 erythromycin에 대해서는 40%가 감수성을 나타내었다. Identification and antibiotic susceptibility of Clostridium perfringens isolates from fecal specimens of healthy sheep and dogs were performed from December, 1995 to November, 1996 in Kwang-ju and Chonnam area. C. perfringens was isolated in 3 strains(15.0%) out of 20 healthy sheep and 2 strains(6.7%) out of 30 healthy dogs. In antibiotic susceptibility test of C. perfringens, 80% of the isolates was susceptible to ampicillin, baytril, and penicillin. 60% to cephalothin, and 40% to erythromycin.
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血淸 Albumin의 Catabolic Rate에 關한 硏究
鄭熙坤 慶北大學校 醫科大學 1966 慶北醫大誌 Vol.7 No.2
This paper is a study of the effects of dietary protein and total pool size of albumin on the catabolic rate of serum albumin. The catabolic rate of I^131-serum albumin in rabbits was significantly increased as the protein intake was raised. An average biological half life of 7.7 days was obtained for animals on a low protein diet and 5.9 days for animals on a high protein diet. An impressive phenomenon observed in the experiment is that the catabolic rate was strikingly accelerated on the first day following the change of food from low protein to high protein diet. The change of total pool size of serum albumin induced by plasmapheresis or plasma infusion revealed no significant difference in catabolic rate of albumin compared with normal state, eventhough a slight difference in catabolic rate was observed in distribution and mixing phase. When the blood plasma was replaced with plasma expender for keeping the same blood volume, the catabolic rate appeared nearly similar to that of normal state even in the phase of distribution and mixing. From the experimental results it is evident that the catabolism of serum albumin, as far as the catabolic rate is concerned, is not affected by the change of total pool size of albumin.
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鄭熺坤 서울大學校 保健大學院 1969 公衆保健雜誌 Vol.6 No.1
A study was carried out to find the sanitary conditions of the mess halls, dormitories, barber shop, retail shop and resting rooms in the 45 plants of the 79 large ones (with more than 100 employees) at Young Deung Po Area, Seoul, from August 2 to September 30, 1967. The results were as follows: 1) Of plants there were 28 mess halls, 9 dormitories, 1 barber shop, 1 retail shop and 7 resting rooms. 2) Average marks of mess halls was 68.7 when they were checked with the chart with Korean health centers were using and those of dormitories, barber shop, retail shop and resting rooms were 68.5, 50.0 and 51.8 respectively. Overall average was 61.6 marks. 3) No refrigerators were found in 13(46.4%) of 28 mess halls and the utensils in one mess hall were washed without any detergent or boiling. 4) The well waters were used in 6 plants(13.3%) for drinking and cooking without any purification and unhygienic open vault privies were found in 34 plants (75.5%) 5) The industrial wastes from 31 plants(68.8%) were discharged to the public sewers whereas those from 14 plants(31.1%) were treated in their own facilities, no special treatments of toxic wastes were carried out. 6) 15 plants (33.3%) had neither baths nor washstands. 7) Average space per person in the dormitories was 1.9m² and sleeping period was 7.5 hours. 8) The first aid kits were found in 11 plants and dispensaries in 6 plants. There were physicians in 4 plants and 22 health managers who had no previous education on the public health field were found in name but they worked at the other fields. 9) Average number of coliform group in 1 gm of wet kitchen clothes was 13,970. 10) 71.4 per cent of dining boards showed positive result in coliform group test and 50 per cent of disthes, 39.2 per cent of cups, 32.1 per cent of spoons and 21.4 per cent of chopsticks. Overall average was 52.3(kitchen clothes 100.0%) 11) The number of coliform groups in kitchen clothes decreased with increasing the washing times, that is, 13,970 of original coliform groups decreased to 4,041(28.9 per cent decrease) after first washing and to 120(0.9 per cent decrease of original coliform) after second washing in clean water. 12) Average colony number of air borne microbe was the highest at 103.5 in the petri dishes of 9cm diameter with 5 minutes exposures in the mess halls of the textile plants and the lowest at 11.4 in those of the chemical plants. Overall average was 48.7
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