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방사선취급 병원근무자들의 염색체이상 및 자매염색분체교환 빈도
차애리,김미선,황인경,이수일,조병만,김돈균,Cha, Ae-Ri,Kim, Mi-Sun,Hwang, In-Kyung,Lee, Su-Ill,Cho, Byung-Mann,Kim, Don-Kyoun 대한예방의학회 1998 예방의학회지 Vol.31 No.4
In order to evaluate the cytogenetic hazard among hospital workers potentially exposed to low dose of radiation, the analysis of chromosome aberrations(CA) and sister chromatid exchanges(SCE) in lymphocytes were performed in 79 hospital workers and 79 non-exposed workers. The mean frequency of chromosomal exchange and deletion(respectively, $0.20\times10^{-2}/cell\;and\;0.39\times10^{-2}/cell$) in the exposed group were significantly higher than those$(0.07\times10^{-2}/cell\;and\;0.23\times10^{-2}/cell)$ in control group. The frequency of sister chromatid exchanges was 5.04/cell in the control vs. 6.57/cell in the exposed group. There were also significant differences in the mean frequencies of CA and SCE adjusted for age, sex, smoking, drinking between two groups. There were no evidence of significant increase of CA and SCE according to the department or duration of employment. But the frequency of cells having chromosome aberration was significantly higher in the exposed group than in the control group related to duration of employment. There was no dose-effect relationship between the cumulative doses and the frequency of CA and SCE. But in the case of last 1 yr cumulative dose, there were evidence of significant dose-dependant increase of chromosome type CA and percentage of cells with aberration. The result suggest that there is cytogenetic hazard in risk group like hospital workers handling low dose radiation. And the analysis CA and SCE are useful biological indicators for the exposure of low dose level of radiation.
유태석,차애리,박호규,김문환,Yoo, Tae Suk,Cha, Ae Ri,Park, Ho Gyu,Kim, Moon Hwan 한국정보통신학회 2022 한국정보통신학회논문지 Vol.26 No.12
In this paper, we design a navigation filter for an underwater glider. Underwater gliders are low-cost, reusable, and can be used for a long time. Two types of filters are designed considering characteristics such as small size, low cost, and low power. The navigation filter estimates the reference velocity of the underwater glider's body frame based on the minimum sensor output. The sensor configuration of the first filter consists of an accelerometer, a magnetometer, and a depth sensor. the second filter include extra a gyroscope in the same configuration. The estimated velocity is fused with the attitude, converted into the velocity of the navigation frame and finally the position is estimated. To analyze the performance of the proposed filter, analysis was performed using Monte Carlo numerical analysis method, and the results were analyzed with standard deviation (1σ). Standard deviations of each filter's position error are 334.34m, 125.91m.
강수용,조병만,이수일,황인경,김영욱,김영실,차애리,하이호,이철호,김돈균,Kang, Soo-Yong,Cho, Byung-Mann,Lee, Su-Ill,Hwang, In-Kyong,Kim, Yeung-Wook,Kim, Young-Sil,Cha, Ae-Ri,Ha, I-Ho,Lee, Chel-Ho,Kim, Don-Kyoun 대한예방의학회 1997 Journal of Preventive Medicine and Public Health Vol.30 No.4
This is a cross-sectional study to evaluate the serum lipid levels of children living in Pusan in 1996. The distribution of age is from 2 years old to 12 years old. In female children mean total cholesterol is $171.4{\pm}26.2mg/dl$, triglyceride is $104.7{\pm}50.6mg/dl$, HDL-cholesterol is $54.4{\pm}14.8mg/dl$, and LDL-cholesterol is $95.4{\pm}32.9mg/dl$. In male children mean total cholesterol is $167.9{\pm}25.2mg/dl$, triglyceride is $6{\pm}45.5mg/dl$, HDL-cholesterol is $55.4{\pm}11.7mg/dl$, and LDL-cholesterol is $94.4{\pm}23.6mg/dl$. The percentile of serum lipid levels is measured in children. The 95th percentile of serum total cholesterol is 210mg/d1 in male children, and 214mg/d1 in female children. And, the 95th percentile of serum triglyceride is 184mg/d1 in male children, and 191mg/d1 in female children. And, the 95th percentile of LDL-cholesterol is 133mg/d1 in male children, and 135mg/d1 in female children. Serum total cholesterol is positively .Elated to age(r=0.18), height(r=0.08), weight (r=0.17), obesity index(r=0.12), and negatively .elated to father's education level (r=-0.13), mother's education level(r=-0.13). Serum triglyceride is positively related to weight(r=0.23), age(r=0.31) and negatively .elated to father's education level(r=-0.12), mother's education level(r=-0.18). Serum HDL-C was positively reated to mother's education level(r=0.07) and negatively .elated to height(r=-0.12), weight(r=-0.09). Conclusively, the serum lipid levels of children living in Pusan is generally so high that the family and school must try to control the serum lipid levels. 본 연구는 부산지역 소아의 연령별 혈청지질치의 분포와 이에 영향을 미치는 요인에 대한 단면조사연구로서 1996년 4월에 2세부터 12세의 941명을 대상으로 혈청 지질을 조사한 결과는 다음과 같다. 1. 평균 혈청지질치 혈청지질치는 여아의 경우 총콜레스테롤 $171.4{\pm}26.2mg/dl$, 중성지방 $104.7{\pm}50.6mg/dl,\;LDL-C\;95.4{\pm}32.9mg/dl$로 남아의 $167.9{\pm}25.2mg/dl,\;90.6{\pm}45.5mg/dl,\;94.4{\pm}23.6mg/dl$보다 높았다. 총콜레스테롤 (p<0.05)과 중성지방(p<0.01)에서는 여아에서 통계적으로 유의하게 높았다. HDL-C은 남아가 $55.4{\pm}11.7mg/dl$로 여아의 $54.4{\pm}14.8mg/dl$보다 높았다. 2. 혈청지질치의 백분위수 소아의 혈청지질치의 백분위수는 총콜레스테롤의 경우 95퍼센타일이 남아에서 210mg/dl, 여아의 경우 214mg/d1로 미국에서 보고된 남아의 191mg/dl과 여아의 209mg/dl보다 오히려 높았다. 3. 혈청 지질과 비만도 경도 비만군과 중등도 비만군이 정상군보다 총콜레스테롤, 중성지방, LDL-C 등에서 의미있게 높았고, HDL-C에서 의미있게 낮았다(p<0.05). 4. 혈청 지질과 부모의 학력 총콜레스테롤, 중성지방, LDL-C은 아버지의 최종학력이 높을수록 의미 있게 감소하였고(p<0.05), 총콜레스테롤, 중성지방, LDL-C은 어머니의 최종학력이 높을수록 의미 있게 감소하였고(p<0.01), HDL-C은 어머니의 최종학력이 높을수록 통계학적으로 의미있게 증가하였다(p<0.05).
김영실,박혜숙,조봉수,김영욱,고광욱,강수용,차애리,이철호,황인경,조병만,이수일,김돈균,Kim, Young-Sil,Park, Hye-Sook,Cho, Bong-Su,Kim, Yeong-Wook,Koh, Kwang-Wook,Kang, Soo-Yong,Cha, Ae-Ri,Yi, Cheol-Ho,Hwang, In-Kyung,Cho, Byung-Mann,Lee, S 대한예방의학회 1997 예방의학회지 Vol.30 No.4
The author surveyed overall obesity indicies and factors concerned with obesity such as dietary intake, physical activity, stress and life style with the subject of doctors. The number of subjects was total 508 with 396 men and 112 women. They were subgrouped into surgical part, medical part and service and basic part by speciality. And also subgrouped into intern and resident, pay doctor, and practitioner by working type. The results were as follows. 1) Obesity indices: BMI of total doctor was $23.1{\pm}2.8$, and WHR was $0.87{\pm}0.08$ and overweight prevalence(BMI>25.0) was 23.6%. It was within normal limit but slightly over the Korean standard. The degree of obesity indices of subgroups by speciality was 'surgical part > medical part > service and basic part', and by working type was 'practitioner > pay doctor > intern and resident'. 2) Dietary intake and Physical activity: Average dietary intake was $2148{\pm}451kcal/day$. The degree of dietary intake by speciality was 'surgical part > medical part > service and basic part'. By working type it was 'practitioner > pay doctor > intern and resident'. Average physical activity was $29{\pm}5$ METs/day. The degree of physical activity also showed similiar pattern. But there was no significant difference among each groups. 3) Comparision between over-weight and non-over-weight group: The items that showed significant difference between two groups were dietary intake, skip breakfast, regular exercise, smoking, heavy drinking, chronic disease etc.