부산지역 모 공단 및 인근지역 사업체의 산업보건 실태에 관한 조사연구

이동영,손혜숙,이채언,박형종,김대환,엄상화,최성용,유병철 인제대학교 1993 仁濟醫學 Vol.14 No.4

부산지역 공단 및 인근지역 사업체의 산업보건실태를 파악하기 위하여 205개 사업체의 보건담당자를 대상으로 1990년도의 보건실태에 관한 설문조사를 하였다. 조사내용을 일반사항, 보건관리실태에 관한 사항, 작업장 유해환경 및 보호구 지급사항, 건강관련 사항 및 근무조건에 관한 사항 등으로 대별하여 분석ㆍ관찰하였다. In order to obtain the fundamental data for developing more effective and acceptable programs of public health manegement in an industrial complex, 205 health manager in the plants answered the questionaire of the status of industrial health during 1990. The questionaire consisted of general charateristics, health care status, environmental problems, health problems, and others. 72.4% of 205 plants had less than 100 workers. Fabricated metal manufacture was 32.4%. Although Footwear manufacture was 6.4%, the percentage of workers was 33.1% of total workers. The percentage(56.2) of retired women was higher than that(38.2) of men. 51.9% of total plants has recieving group health care services. 85.4% of plants was exposed to noise, 66.5% was exposed to dust. Ear plug and mask were given to prevent noise and dust in 69.2% and 68.6%, respectively. Among 22,299 workers, 618(2.8%) were diagnosed as suspected non-occupatinal disease. 85.9% of them worked on continuously and had their disease treated. The cases suspected for occupational disease was 100 workers. 82.5% of them changed their post. 45% had the compensation for their occuaptional disease. The rate of working: accidents was 2.3%.

韓國人 身長의 最大發育年齡으로 본 發育促進現狀의 推移에 관한 比較硏究

田溶海,朴淳永,尹錫昌 慶熙大學校 1988 論文集 Vol.17 No.-

On the basis of the study intended to research by cross-sectional keeped pace with semilongitudinal study the growth accelerating phenomena that MGA(Maximum Growth Age) in teenager's body height. The duration of study is from September 1st. 1987 to May 25th 1988 and the data are analysed through computer. The body height and MGA of Koreans who had been for during the period from 1898 to 1968 proved transition of the growth accelerating phenomena by research data reported between 1913 and 1985. The results are as follows: 1. Maximum Growth Age The MGA's in body height of male are respectively the age 15.024 in 1913, 14.28 in 1940, 13.65 in 1959, 13.86 in 1967, 12.52 in 1983, while those of female are the age of 12.0 in 1940, 12.36in 1959, 10.45 in 1969, 11.15 in 1958: these data show that the MGA of the Korean has been getting younger. 2. The correlation of the MGA's in body height are as below; Male: r=-0.4598 Female: r=-0.2526 3. The equation of linear regression of MGA's in body height are as blow; Male: Y(MGA)=-0.0352X(the year)+15.7282 Female: Y(MGA)=-0.0273X(the year)+12.5956 4. The MGA's in body height are shown in Table 5. 5. From the transition of the growth accelerating phenomena. we can compute the fact that the MGA's has been getting younger by 0.3 year per 10 years. 6. The future growth accelerating phenomena in body height, the MGA's of male are respectively the age 12.56 in 1990, 12.38 in 1995, 12.21 in 2000, while those of female are the age of 10.14 in 1990, 10.0 in 1995. 0.85 in 2000: these duta show that the MGA of female are more younger than that of male.

잡음환경에서 구름 볼 베이링의 결함검출을 위한 ALE의 적용

김영태,최만용,김기복,박해원,박정학,김종억,류준 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

It is very important to detect the bearing defects in rotating machinery since the critical failure of bearing cause a machinery shutdown. However it is difficult to detect the vibration signal resulting from the initial defects of bearing because of the high level of broadband noise. A signal processing technique, called the adaptive line enhancer(ALE) as one of adaptive filter, is studied in this work. This technique is to eliminate broadband noise without a prior knowledge of the noise and signal characteristics. Also we propose the optimal methods for selecting the three main ALE parameters such as correlation length, filter order and adaptation constant used in the adaptative process. Vibration signals for three abnormal bearings, including inner and outer raceways and ball defects, were acquired from Anderon(angular derivative of radius on)meter. The experimental results showed that the proposed technique can reliably detect the bearing defective signals masked by broadband noise.

工業敎育大學 工業化學敎育科의 敎科課程 改善에 관한 硏究

송해영,홍원표,맹기석,윤석호,노재성,강용 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(A)

The methods for the improvements of curriculum of the Department of Industrial Chemistry Education were examined in some detail discussing the following items; 1) Comparison and analysis of the new curriculum with the old of the Department of Chemical Industry in technical high school. 2) Examination of the current curriculum of the Department of Industrial Chemistry Education in Industrial Education College. 3) Suggestion of the improved curriculum suitable for the students in the Department of Industrial Chemistry Education.

이동 열원을 고려한 전자빔 용접의 유한요소해석

조해용,정석영,김명한,조창용,이제훈,서정 한국레이저가공학회 2001 한국레이저가공학회지 Vol.4 No.1

Simulation on the electron beam welding of Al 2219 alloy was carried out by using commercial FEM code MARC, which encounters moving heat sources. Due to axisymmetry of geometry, a half of the cylinder was simulated. A coupled thermo-mechanical analysis was carried out and subroutine for heat flux was substituted in the program. The material properties such as specific heat, heat transfer coefficient and thermal expansion coefficient were given as a function of temperature and the latent heat associated with a given temperature range is considered. As a result, the proper beam power is 60kVX60mA and welding speed is 1~1.5 m/min. The residual stress in the heat-affected zone as well as the fusion zone does not increase. It is necessary to use jigs for preventing distortion of cylinder and improving weld quality.

조선소 용접공진폐증의 발생에 관련된 요인 분석

손혜숙,최성룡,유영진,이채언 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.1

부산지역조선소에 근무하는 547명의 용접공을 대상으로 용접공진폐증의 유소견율을 작업부서, 용접기간, 용접시작 년도, 연령과 마스크사용에 따라 비교하였다. 전체 용접공진폐증의 유소견율은 7.9%로 동지역에서 1989년 조사된 유소견율 8.9%보다 낮았다. 용접공진폐증의 유소견율은 용접작업기간이 길수록, 작업시작년동가 빠를수록, 마스크를 사용하지 않은군에서 통계적으로 유의하여 높게 관찰되어 용접공진폐증의 발생에 용접작업기간, 환경개선정도와 마스크사용의 영향을 미치는 인자로 관찰되었다. 이들 인자중 용접기간 5-9년군이 5년 이하군에 대하여, 1975년 이전 용접시작군, 1976-81년 용접시작군이 1982년 이후 시작군에 대한 odds ratio가 각 각 5.98, 8,8과 12.38였다. 용접공진폐증자 37명의 방사선사진은 과거와 비교한 결과 진행된 예는 없었으며, 10명은 변화가 없었다. 비진폐군에 비하여 용접공진폐군에서 결핵유병율이 통계적으로 유의하게 높게 관찰되었다. 이상의 결과에서 조선소에서 발생하는 용접공진폐증은 환경개선 및 보호구의 적절한 착용 등으로 발생을 예방하는 것이 가능하고, 발생된 경우라도 역시 적절한 관리에 의해 호전되므로, 조선조 용접공 진폐증은 타 진폐증과는 구분 관리되어야 할 것이다. 즉 조선소 용접공진폐증의 발생을 예방하기 위하여 지속적인 법적규제와 근로자 개인에 대한 보호구 사용의 필요성 및 올바른 보호구 사용에 대한 교육이 필요하겠으며, 발생한 용접공진폐증은 즉각적인 작업부서전환보다는 진폐증이 발생한 부서의 환경개선을 고려함과 동시에 진폐발생자에게 보호구착용 등을 지도하면서 추적 관리를 하여야 할 것이다. Pneumoconiosis is one of the most important occupational disease in Korea. In Pusan, most of pneumoconiosis is welders' pneumoconiosis developed in shipyard. With clinical(including interview with every patients) and radiological(chest radiographs) methods, author purposed to know the factors related to the concept for health care(management) of shipyard welders. The prevalence rate of welders' pneumoconiosis was calculated by the means of reading of chest radiographs of 547 shipyard welders. The prevalence rate of welders' pneumoconiosis(including suspected pneumoconiosis, category 0/1) was 7.9%. It was lower than that (8.9%) in same area studied in 1989. Prevalence rate increased as total welding duration increased and the welding work began early. It was higher in welders who did not use antidust mask. Probability of the occurrence of welder's pneumoconiosis was related with the time that the welder began welding work. sixteen cases among the 37 who were diagnosed as pneumoconiosis returned normal in the follow-up chest radiographs. There was no case aggrevated. The pertinent management for the personnels and their working environment contributed to the decrease of incidence of the welders' pneumoconiosis and the improvement of the disease. Tp prevent the occurrence of the pneumoconiosis in shipyard welders, it seems to be necessary for the company to be supervised under the any legislation, and to educate the welder to use the protective apparatus. It is suggested that considerate and continuous observation under the adequate management is preferable to the immediate conversion of the working department for the pneumoconiotic welders.

von Willebrand's disease 1예

박치영,모성환,문철호,곽재정,김태종,전용준,박유환,정춘해 朝鮮大學校 附設 醫學硏究所 1995 The Medical Journal of Chosun University Vol.20 No.2

von Willebrand's disease (vWD) is the most common autosomal-dominant inherited disorder resulting from a quantitative or a qualitative defect of von Willebrand factor (vWF). The most diagnostic pattern is the combination of a prolonged bleeding time, a reduction in plasma vWF concentration, a parallel reduction in ristocetin cofactor activity, and reduced factor Ⅷ activity, In this case, ristocetin-induced platelet aggregation data were compatible with that of vWD. Bleeding times were prolonged over 4 minutes, vWF antigen levels were 45%. vWF ristocetin cofactor activities were 0~1% and factor Ⅷ levels were 31%, when compared to the normal control. We report the case of a family with vWD. characterized by a quantitative defect in vWF

von Willebrand's diseasee 1예

박치영,모성환,문철호,곽재정,김태종,전용준,박유환,정춘해 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

幼弱白鼠 肝細胞內 DNA, RNA 및 PAS 陽性物質에 미치는 Chlorambucil과 Ginseng Saponin의 相互作用에 關한 組織化學的 硏究

閔惠淑,全容赫,羅福瑛 고려대학교 의과대학 1982 고려대 의대 잡지 Vol.19 No.3

The effects of interaction between chlorambucil and crude ginseng extract (ginseng saponin) had teen investigated on liver cell of 90 experimental weanling albino rats from 22 healthy primiparous mother rats by means of histochemical detection as RNA, DNA and PAS positive materials 1. Severe regressive changes of the liver tissue, especially on the portal area, induced by intraperitoneal administration of single dose of chlorambucil rated 0.2㎎/0.1㏄ per 20㎎ of body weight had been protected or recovered from the degeneration by following administration of single dose of the crude ginseng extract rated 1.0㎎/0.1㏄ per 20㎎ of the body weight of young. 2. An abrupt declination of PAS positive material in hepatocyte due to use of chlorambucil was contrasted with a gradual inclination of it induced by use of crude ginseng extract, and the effect of the latter appears to be contributed for recovering the lower PAS reaction into that of the normal on the former hepatic cellular change. 3. A declination of stain property or RNA to Azure B was resulted from the use of chlorambucil, while that of DNA was not affected until 24 hours and later it was increased by 36 hours after the administration. 4. A slight decrease of the staining in both the DNA and RNA was recovered the property by 48 hours after the administration of crude ginseng extract. 5. On concomitant administration of both the chlorambucil and crude ginseng extract the staining property of the RNA to Azure B was shown a decrease in the initial stage, and was recovered in that of the normal immediately thereafter without influencing that for DNA.

직장 항문기형에서 직장내 조명지침을 이용한 전방괄약근외형 접근법

신진용,조용훈,김해영,오남건 대한대장항문학회 2004 Annals of Coloproctolgy Vol.20 No.2