일부 아연광산지역에서의 Cadmium이 주민의 건강에 미치는 영향

남택승,홍종관,한구웅,박종안 順天鄕大學 1987 순천향대학논문집 Vol.10 No.1

연폭로여성근로자들에서의 생물학적 연폭로 지표들의 상호관계

남택승,한구웅,김형아,김정만,이광묵 가톨릭대학 산업의학쎈타 산업의학연구소 1986 韓國의 産業醫學 Vol.25 No.3

For the purpose of obtaining of an effective biological monitoring data in terms of evaluation the health consequences of lead absorption, the female workers in the electronic industry who have been exposed to low-level lead occupationally were chosen as the subjects of our studies. We observed the 9 parameters in not only 305 lead-exposed female workers who have been exposed to lead occupationally also 254 normal female subjects who have not been exposed to lead occupationally. The parameters chosen for this study were as follows, blood lead (PbB), urine lead (PbU), δ-aminolevulinic acid in urine(ALAU), coproporphyrin in urine(CPU), zinc protoporphyrin in whole blood(ZPP), hemoglobin(Hb), hematocrit(Ht), δ-aminolevulinic acid dehydratase(ALAD) activity & ALAD activity ratio(A/R; absorbance at substrate pH 6.6/absorbance at substrate pH 5.8). The results obtained were as follows: 1. The average age of the lead-exposed female workers in the electronic industry and in the normal female subjects were 20.5±4.2 years and 21.7±3.5 years, respectively. 2. The average work duration of the lead-exposed female workers in the electronic industry was 26.4±19.4 months 3. The mean value of PbB of the lead-exposed female workers in the electronic industry and in the normal female subjects were 30.18±6.64㎍/100ml and 21.61±3.84㎍/100ml respectively. 4. In the lead-exposed female workers of the electronic industry and of the normal female subjects, the mean value of ZPP were 36.22±0.69㎍/100ml and 24.64±7.21㎍/100ml, respectively 5. In the lead-exposed female workers of the electronic industry and of the normal female subjects, the mean value of Hb were 13.98±0.57g/100ml and 14.09±0.66g/100ml, respectively. 6. The mean value of the lead-exposed female workers in the electronic industry were 55.07±17.61㎍/1 for PbU, 1.93±0.69mg/1 for ALAU, and 49.74±22.79㎍/1 for CPU, while in the normal female subjects, 44.27±15.76㎍/1 for PbU, 1.46±0.55mg/ 1 for ALAU, and 38.66±17.99㎍/1 for CPU. 7. Among various pairing of the parameters of lead exposure in the female lead-exposed workers and in the normal female subjects, the correlation between PbB and ZPP showed the highest coefficient value.

일부 직장인의 정기 건강진단 실시 결과에 관한 고찰

남택승,홍종관,박종안,한구웅,김주자 순천향대학교 1987 논문집 Vol.10 No.2

서울, 천안, 구미에 각각 위치한 순천향대학 부속병원에서 서울, 천안, 구미 및 인근 군단위 지역의 공무원 및 사립학교 교직원을 대상으로 1986년 4월부터 동년 7월까지 집단건강진단을 실시하고 설문지를 배부, 조사하여 분석한 결과 다음과 같은 성적을 얻었다. 1. 1차 검사결과 유소견율은 수축기혈압 1.1%(남자 1.4%, 여자 0.2%), 이완기혈압 6.4%(남자 8.0%, 여자 1.5%)이었다. 2. 공복시혈당은 전대상자의 3.3%(남자 3.8%, 여자 1.2%)가 고혈당의 유소견율을 나타내었으며 뇨당은 1.3%(남자 1.6%, 여자 0.5%)의 유소견율을 보였다. 3. 순환기계질환에 관한 2차 검사유소견율은 수축기혈압 24.1%, 이완기혈압 74.9%.안저검사 41.1%, 심전도 검사 36.1%. 혈중 트리글리세라이드 검사 36.1%이었다. 4. 혈압의 연도별 변화는 '86년도의 혈압 평균치는 수축기혈압이 남자 122.7±15.7mmHg, 여자 113.0±13.1mmHg로 '82. '84년도에 비해 유의한 차가 있는 것으로 나타났으며(남 P<0.01, 여 P<0.05) 이완기혈압은 남자 80.9±15.1mmHg, 여자 73.8±23.9mmHg로 남자에 있어서만 (P<0.05). 연도별로 유의한 차가 있는 것으로 나타났다. 5. 혈압의 개인별 경시적 변화를 보면 수축기혈압의 경우 전체적으로 99.8%가 계속 정상으로 유지되고 1.2%는 고혈압 상태로 계속 유지되고 있는 것으로 나타났으며 이완기혈압의 경우는 전체적으로 92.8%가 계속 정상, 7.1%가 계속 고혈압으로 나타났다. 6. 혈중 콜레스테롤 평균치의 연도별 변화는 통계적으로 유의하게 증가되었다.(P<0.01). 7. 혈압과 관련요소들에 대한 상관관계에서 상관성이 있는 것은 수축기혈압의 경우 남자에 있어서 비만도, 뇨단백, 혈중 크레아티닌 및 콜레스테롤, 안저검사, 심전도검사, 혈중 트리글리세라이드이었고 여자에 있어서는 Stout지수, Rohrer지수, 뇨단백, 혈중 콜레스테롤, 안저검사, 심전도검사, 혈중 트리글리세라이드이었다. 이완기혈압의 경우 남자에 있어서는 뇨단백, 혈중 콜레스테롤, 안저검사, 심전도 검사, 혈중 트리글리세라이드이었고 여자에 있어서는 Stout지수, Rohrer지수, 뇨단백, 혈중 크레아티닌, 심전도 검사, 혈중 트리글리세라이드이었다. 8. 당뇨질환에 관한 2차 검사 유소견율은 공복시 혈당이 전체 51.8%, 식후 2시간 혈당치가 전체 41.2%이었다. 9. 공복시 혈당 평균치의 연도별 변화에서 '86년도 혈당 평균치는 남자 92.5±20.4㎎%, 여자 87.6±15.9㎎%이었고 연도별 증가는 통계적으로 유의하였다(P<0.01). 10. 혈당의 개인별 경시적 변화는 전체적으로 99.6%가 계속 정상, 2.32%가 계속 고혈당이었고 고혈당에서 정상으로, 정상에서 고혈당으로 된 경우는 각각 0.02%, 0.05%였다. 11. 혈당과 관련요소들에 대한 상관관계에서 상관성이 있는 것은 남녀 모두에서 Stout지수, Rohrer지수, 뇨당, 식후 2시간 혈당치이었다. 12. 건강행태에 관한 설문조사에서 자신의 건강상태에 대한 인식, 흡연, 음주, 식사에 대한 항목이 정상군과 유소견군간에 유의한 차가 없는 것으로 나타났다. Health Insurance Corporation which covers government officials and privated school faculties has held periodic health examination for the insured every other years since 1982 under the Insurance Law. The purpose is to detect diseases and trea diseases at their early stage. Three Soonchunhyang University Affiliated Hospitals located each in Seoul, Chunan, and Gumi city are committed to carry out the health examination. There are two steps in examination. The first step is for all insured, the second step is for the people whose results come out abnormal in the first step examination. Each item of the tests has been predetermined by the Corporation and most of them are to detect many chronic diseases e.g. hypertension, diabetes mellitus, liver disease, pulmonary Tbc., renal disease, and venereal disease. In spite of increasing concern regarding these diseases recently, we are lack of even basic statistics such as prevalence rate. Authors collected health examination results from three hospitals and analysed them.

Bacilus Calmette Guerin의 可移植性腫瘍 마우스의 壽命에 미치는 影響

全南昊,柳榮海,金舜姬,尹鐸求 國立保健硏究院 1975 국립보건연구원보 Vol.12 No.-

수술후 SUCKING이 구순열 수술결과에 미치는 영향

이택종,김남북 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.2

In the most plastic surgical literature, sucking in general is discouraged on the basis that this muscular activity will jeopardize the cleft lip repair and feeding is recommended with a spoon, cup or asepto syringe. Although we had recommended spoon feeding postoperatively, we were made aware that some mothers had, in fact, bottle-fed their infants with no apparent harm. So we performed this study to define the effect of bottle-feeding or breast feeding on the outcome of cleft lip surgery. 30 infants were fed by means of a spoon for three weeks, and 30 started bottle-feeding or breast-feeding as soon as they were fully awake following operation. There were no statistically significant difference in the complication rate between the two groups.

기업합병시 영업권회계에 관한 연구

이우택,이남수 漢陽大學校 産業經營硏究所 1998 産業經營硏究 Vol.10 No.-

스타 토폴로지에서 다중경로정보를 이용한 효율적 요약기법

김남희,김변곤,정경택 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

We aggregate multi-links information between boundary nodes using the line segment scheme that aggregates topology information within PG referring bandwidth and delay parameter in this paper. The proposed scheme search multi-links efficiently using the depth priority method based on hop count instead of searching all links. To do this, we propose a modified line segment algorithm using two line segment method that represents two points which consist of delay-bandwidth pair to reduce topology information and provide a flexibility to the multiple-links aggregation. And we apply it to current star topology aggregation. To evaluate performance of the proposed scheme, we compare/analyze the current method with the proposed scheme with respect to call success rate, access time and crankback rate. Through the simulation result analysis, the proposed star topology aggregation scheme presents the better performance than existing scheme.

연작업자들의 보건관리시 혈중 ZPP측정의 의의

이병국,남택승,안규동 가톨릭대학 산업의학 쎈타 산업의학연구소 1989 韓國의 産業醫學 Vol.28 No.4

In order to investingate the effectiveness of measurement of zinc protoporphyrin(ZPP)in whole blood in the health provision of lead workers, 344 make lead workers working in 4 different lead using indrstries were selscted. The parameters chosen for this study were ZPP in whole blood, blood lead(PBB), ∂-aminolevulinic acid in urine(ALAU), hemoglibin(HB), work duration of each workers & their working condition. The results obtained are as follows : 1. Blood ZPP was highly correlated with blood lead among various indices of lead absorption. The was no difference of correlation coefficient between ZPP & LOGZPP with blood lead. 2. The regression equation of LOGZPP on blood lead (PBB) was LOGZPP = 2.61 +0.047PBB 3. The slope of regression of LOGZPP on PBB of longer work duration was steeper than that of short work duration group. This could be explained by the chronic effect of lead on heme precursors. 4. It is highly recommended that blood ZPP could be used as a screening index of biological monitoring of lead workers.

敎職員의 慢性疾患 有病樣相

韓久雄,鄭鍾學,南澤昇 순천향대학교 1984 논문집 Vol.7 No.1

The mass health screening examination was excuted differently from the primary screening test and secondary precision test for 2,718 teachers in Gumi City and its adjoined three Guns, Kyungpook Province, 1982. The age of subjects was between 20 and 64 years old, and the percentage of men teachers showed 74 and the percentage of women teachers was 26. The results of the screening tests are summarized as follows: Of 2,718 subjects, 16.5% (6.8% for hypertension, 4.2% for liver disease, 2.8% for pulmonary tuberculosis and 1.8% for diabetes) required secondary precision test. Detected cases account for 63.8% of the 447 teachers taking secondary precision test, this was equivalant to 10.5% of the total examined teachers. 3.3% of the total examined teachers turned out to be confirmed cases and 7.2% of the total examined teachers was suspicious cases. The confirmed cases of the total examined teachers by disease were 1.0% for prevalence of pulmonary tuberculosis, 1.4% for prevalence of hypertension and 0.8% for prevalence of diabetes. The pervalence rate obtained by age group were 26.1% for 50~59 age group which was the highest rate group, 16.0% for 40~49 age group and 6.6% for 30~39 age group. It was shown that the rate increased by age. Although hypertension, diabetes and pulmonary tuberculosis increased by being old, in cases of liver disease, renal disease and anemia, 30~49 age group was marked as high rate.

수열합성 반응에 의한 3mol % 지르코니아 세라믹의 Fe2+, Fe3+, Er3+치환에 따른 상변태와 물성 변화

변지철, 이현철, 김택남, 류재경 배재대학교 공학연구소 2017 공학논문집 Vol.19 No.1

Zirconia is a heat-resistant material with a high melting temperature(2700℃) and has low thermal conductivity and excellent corrosion resistance. However, application has been limited due to brittleness, which is a disadvantage of ceramic materials. As a way to improve this, the addition of Y3+ improves the strength by phase transformation, which can improve the brittle problem, which is a disadvantage of ceramic. Many studies have been conducted on the addition of Y3+ after the addition has been found to be more efficient than the other additives. In this experiment, have studied the additives that replace this Y3+. Expeiments on the possibility of replacing Y3+ by adding an alternative additive considering Zr-sol(Fe2+, Fe3+, Er3+) in consideration of Atomic size, Crystal ionic raddi and Effective Ionic raddi. ZOC(ZrOCl2*8H2O) was dissolved in distilled water and synthesized by hydrothermal synthesis at 160℃ for 24hours. The formed Zr-sol was separated into a supernatant and precipitate. The supernatant was washed with distilled water, and the presence of chloride ion was confirmed using AgNO3. And add to the cleaned Zr-sol an additive that is believed to be a substitute for Y3+. The prepared Zirconia was calcined at 900℃ for 2hours, and the crystal phase was analyzed by XRD similar that of YSZ. The calcined powder was uniaxial pressed and sintered at 1500℃ for 2hours. The sintered specimens were first measured for specific gravity. And the particle size distribution, EDAX and FESEM were measured. 지르코니아는 고온에선 용융하는 (2700℃) 낮은 열전도율과 부식저항이 우수한 세라믹이다. 이에 우수한 파괴인성을 주기 위해 3 mol % Y를 첨가하게 되고, 상온에서 정방정 상으로 존재함으로써 파괴인성이 증가한 것으로 알려져 있다. 따라서 본 실험에서는 Y와 유효 원자 반경이 유사한 Er3+ (89pm)를 첨가함으로써, 과연 어떤 변화가 나타나는지를 알아보았다. 또한 원자가가 유사한 Fe3+와 Fe2+ 를 첨가하여 물성변화와 상변화를 조사하였다. 연구결과 이온 반경이 Y와 유사한 Er3+에서는 완전한 정방정상과 밀도, 투광율 (일부 파장은 제외)을 나타내었으나, 이온 반경이 약1/2 인 Fe2+, Fe3+를 첨가한 경우에는 단사정과 비정질 그리고, 650nm이하의 파장에서는 거의 투광하지 않는 현상을 보였다.