http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
朴鐘安 서울大學校 保健大學院 1972 公衆保健雜誌 Vol.9 No.1
This study was made to analyze the longitudinal pattern of pregnancy wastage among Korean women with special reference to the residents at middle town, "Echon-Eup" on the basis of fertility survey result which was conducted from March to May 1965(for three months). The fertility data of a sample of 1,012 eligible women who had neither practiced family planning(Except induced abortion) nor experienced abstinence have been utilized for the analysis. Statistical analysis was made on 2,401 pregnancies from 1,012 women aged 40-44 and 1,240 pregnancies from 175 women aged 40-44 who were thought to have almost passed the fecundable period. The followings are the summary of the results: 1. Pregnancy wastage of 1,012 respondents aged 20-44 until the fourth pregnancy order was 3.7%(Still birth; 1.4% Spontaneous abortion; 2.1%, Induced abortion;0.2%)and one of 175 respondents aged 40-44 until the eleventh was 4.8%(Still birth; 1.1%, spontaneous abortion; 2.3%, Induced abortion; 1.5%). 2. Pregnancy wastage of 175 respondents aged 40-44 showed a upward trend as either the pregnancy or deror mother's age at delievery increase. 3. For each pregnancy order, pregnancy wastage appeared more frequent with increment of mother's age at delivery. 4. Pregnancy wastage was found to be 5.4% for the pregnancy occurred within past five years and about 3% for the pregnancy more than five years ago. It seems that there may be some memory bias in the respondent's reportion on the pregnancy wastage. 5. As for the total number of pregnancies experienced by the respondents aged 40-44, 1.7% of them responded as "No experience" and those who experienced more than 6 pregnancies were 80%.
일부 아연광산지역에서 Cadmium이 주민의 건강에 미치는 영향
박종안,한구웅,홍종관,남택승 순천향대학교 1987 논문집 Vol.10 No.1
The cadmium contents of environment and human body were measured for the health status of the residents in the selected area near an old zinc-mining site assuming that cadmium contamination in the environment would affect the health status of the residents and the results were as follows: 1. The cadmium contents of the environment were 0.021±0.012 mg/m3 in the air. 0.019±0.011 mg/ml in the water, 0.382±0.233 mg/g in the rice and 0.342±0.211 mg/g in the tooth. 2. The major complaints of the residents were excessive sputum, dyspnea and pains on both extremities. F드믿 complained more frequently than male in dyspnea, lumbago and pains on both extremities. 3. An assessment of the nutritional health status of residents revealed that for male 8.5% were weak, 10.1% were fat and 32.5% were anemic, while for female 17.6% were weak, 15.3% were fat and 30.1% were anemic. 4. The prevalence rate of hypertension was 152.8?(male; 84.7?. female;200.0?) and the prevalence rate of diastolic hypertension was higher than that of systolic hypertension. 5. The diagnostic variables verifing the assumption mode in this study were blood pressure(0.76, p〈0.05) and E.S.R.(0.57, p〈0.01). From the above results, the environmental cadmium contamination affects the health status of the residents in the area near an old zinc-mining site to a certain extent, but not to a great extent(R2=0.55).
김준현,김종빈,박종안,박창균,박종백,박광채,김정화,양원일,정남채,문용선,최영일 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
This paper describes a system controller connected via a shared bus to distributed subsystems for multi-tasking, which contributes to a high performance operating system at the lowest system cost. The system controller consists of a single board microcomputer. The subcontroller consists of incremental motion control system for both velocity and position control, employs low cost digital logic gates to achieve the system design flexibility possible with the microprocessor, utilizes a incremental encoder to provide both position and velocity signals, and derives the velocity profile and the rotation direction from the digital difference between the required position data and the feedback data. It is found to be effective in a point-to-point position control system for Industrial processing automatization.
철강용접자의 크롬 및 망간 노출평가와 산업위생관리 대책에 관한 연구
윤종국,이영세,박종안,이송권,채종홍,김억수 한국산업위생학회 2000 한국산업보건학회지 Vol.10 No.1
Results of environmental monitoring for 35 steel industry welders exposed to manganese and chromium fume were evaluated. Efficiency of respiratory protectors, welding face shields and local exhaust ventilation were also evaluated to establish more efficient preventive measures that can protect welders from occupational disease as related to welding fume. The results are as follows; 1. Total fume from CO₂ arc welding with mild steel occurred 1.5 to 2.2 times more than that from shielded meta arc welding. Chromium and nickel fume from welding with stainless steel occurred 27 to 59 times and 18 to 30 times, respectively, than those with mild steel. 2. Proportions of water-soluble chromium(VI) and insoluble chromium(VI) Compare to total chromium occurring from CC₂ arc welding with stainless steel were 10.5% and 8.7%, respectively, while those with mild steel were 57.1 to 63.2% and 31.6 to 38.1%, respectively. 3. The efficiencies of 4 types of respiratory protectors to reduce welding fume exposure were evaluated as 54.4 to 64.4%. 4. The reducing effect of head type welding face shield was 67.6%, and that of hand type welding face shield was 58.5%. The highest reducing effect was shown in air supply welding face shield as 99.2%, although it is not convenient to wear. 5. When welding face shield and respiratory protectors were worn together, the reducing efficiency increased to 79.0 to 87.5%. 6. When local exhaust ventilation was installed in workplace, the reducing efficiencies varied from 31.5 to 73.1% according to the types of welding.