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주물사업장에서 발생하는 호흡성분진의 농도 및 석영함유량에 관한 연구
박용선,노영만,김현욱,한진구,안연순,강성규,김정만 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1
This study was performed to measure and evaluate the concentration of respirable dust and quartz content at molding and shakeout process in the foundry. The 129 samples in 30 foundries were collected using 10mm Dorr-Oliver nylon cyclone and analysed for quartz concent by Fourier Transform Infrared Spectroscopy. The average quartz concentrations in the respirable dust was 0.0273mg/㎡ and ranged from 0.0007 to 0.3757mg/㎥. The average quartz concentrations of shakeout process wsa significantly higher than that of molding in the foundry. The average of respirable dust in foundry 102129mg/㎡ and ranged from 0.1524 to 7.0428mg/㎥. But there is no significant difference between molding and shakeout processes. The average contents of quartz for OEL-MOL was 2025% and ranged from 0.05 to 32.79% The non-compliance rates for quartz were 22.96% in Korea-OEL and 34.01% in ACGIH-TLV and NIOSH-REL, and 35.03% in OSHA-PEL. The airbome dust in the foundry was effectively controlled when local exhaust ventilation and/or wetting system were operated. The result of this study therefore showed that the engineering controls and periodic environmental suveillance in foundry will be very important for preventing the health effects of workers exposed to quartz.
고열을 동반한 혈액 및 혈액종양 환자의 세균감염에 대한 Ceftazidime(Fortum^(�))의 효과
박용선,김영철,김정일,최인선,박경옥 中央醫學社 1990 中央醫學 Vol.55 No.12
To assess the clinical efficacy of ceftazidime (Forturn�) for initial menagement of febrile patients with blood disease and hematologic malignancy, w ; conducted a trial using ceftazidime alone or combination with piperacillin and aminoglycoside in 24 patients during the last 8 months. The results were as follows. 1. We had "Cure" in 13 cases (54 %), "Improvement" in 6 cases (25 %), and "Failure" in 5 cases (19 %), namely, overall clinical response rate was 79 %. 2. Therapeutic response rates according to inital granulocyte count were 92 %, and 64 % in patients above and below 500/mm3 respectively. 3. There were no differences in response rates according to underlying diseases and sites of infection. 4. In MDI, response rate (100 %) was superior to that of CDI (71 %), possibly due to early addition of sensitive antibiotics. 5. Only in 2 cases, mild nausea was noted after N injection and, no deterioration of liver and renal function was demonstrated. These results indicated that ceftazidime, alone or combination with other drugs, could be suitable as an initial drug in febrile patients with blood disease and hematologic malignancy without notable side effects.
박용선,김정민 한국항해항만학회 2022 한국항해항만학회 학술대회논문집 Vol.2022 No.2
2017년부터 현재까지 국제해사기구(IMO)에 제출된 자율운항선박 관련 의제 문서 중 인력과 관련된 의제 문서들의 내용 검토를통해 동향을 파악하여, 현 시점까지의 운항과 관련된 용어들의 정의와 및 우리나라를 비롯한 협약국가들의 운항인력과 관련된 개발 동향을 알아보고자 한다.
박용선,노영만,김치년 한국환경보건학회 2002 한국환경보건학회지 Vol.28 No.1
Tobacco smoke was confirmed as a human carcinogen by many research results. Because many adolescents stay long time in the PC game room, they are exposed to much of tobacco smoke. To evaluate the effect of passive smoking in the PC game room, airborne nicotine concentrations in 2 PC game rooms in Sung-nam city and urinary cotinine concentrations were measured for 20 adolescents. And the subjects were interviewed for duration and time in PC game room and smoking pattern. Subjects are composed of each of 10 smokers(5 males and 5 females) and 10 nonsmokers(5 males and 5 females). They stayed for three hours in the PC game room without smoking. Concentrations of nicotine in smokers and nonsmokers were 129.72 μg/3 and 99.99 μg/m3, respectively. Urinary cotinine concentrations were increased as time goes on after exposure to nicotine and showed maximum value at 9.45 hours after nicotine exposure and were 32.21 and 110.66 μg/L for nonsmoker and smokers. The more using time and frequency in PC game room, the higher urinary cotinine maximum concentration and the longer using duration, also the more increase urinary cotinine concentration. Urinary cotinine has a tendency to increase by passive smoking. Therefore, it is recommended that the effective control for indoor air quality and extensive research be needed to reduce nicotine concentration by passive smoking in the PC game room.