한국인의 연, 망간, 알루미늄 및 실리콘의 혈중 농도

김정만,안정모,김원술,김정일,신해림,정갑열,김준연 동아대학교 산업의학연구소 2000 산업의학연구소 논총 Vol.- No.5

Blood Lead, Manganese, Aluminium and Silicon Concentrations in Korean Adults Jung Man Kim, Jung Mo Ahn, Won Sul Kim1), Jung Il Kim2), Hai Rim Shin, Kap Yeol Jung2), Joon Youn Kim Department of Preventive Medicine, College of Medicine and Industrial Medicine Research Institute. Dong-A University Department of Health Care, Handong University Sunlin Presbyterian Hotpital1) Department of Occupational Medicine, College of Medicine, Dong-A University2) 0bjectives : This study was performed to determine the reference values of blood lead, manganese, aluminium, and silicon in healthy adults. Methods : The subjects were 132 (67 male and 65 female), and classified to three age groups (≤39,40∼49, and 50≤). Hood lead, manganese and aluminium were analyzed by atomic absorption spectrophotometer, and blood silicon was analyzed by direct current plasma optical omission spectrometer. Results : Blood lead levels(geometric mean, S.D) were (3.49, 1.70) ㎍/dL in male auld (3.04, 1.65) ㎍/dL in female, but the difference is not significant, and there was no significant difference between age groups. Mean blood manganese level was 0.99±0.41㎍/dL, and there was no significant difference between sex or age groups. Mean blood aluminium level was 0.59±0.35㎍/dL and there was no significant difference between sex or age groups. Mean blood silicon level was 54.41±27.64㎍/dL in male and 43.34±23.51㎍/dL in female, and the level in male was significantly higher than that in female (p〈0.05). There was significant difference between age groups, and the oldest showed the highest level in male (p〈0.05), but no significant difference between age groups in female. Conclusions : Authors hope that this study would provide basic data for determininig reference values and evaluating health effects.

축구선수의 Detraining과 Retraining이 혈청지질 및 호르몬농도에 미치는 영향

정정화,박재현,채종훈,성혜련,황지인,윤미숙,노금선,윤종관,윤영학,노순덕,정경숙,박일규,김은희,박현태,박상갑 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effects of detraining and retraining on serum lipid and hormones in soccer players. Subjects were seven male high-school soccer players. V˙O_2max was determined for each subjects by administering a treadmill test(initial speed: 90m/min, grade: 5%, increasing speed per 3 min: 30m/min). Serum lipid(T-C, TG, HDL-C LDL-C) and hormones(epinephrine, norepinephrine, growth hormones, cortisol) were assayed pre and post detraining in 10, 20, 30 days after retraining. The repeated ANOVA was used to determine significant differences. The 0.05 level of significance was as critical level for the study. The results of the study were as follows: 1. V˙O_2max(ml/min) were 3576.3±204.2ml/min pre detraining, 3234.1±198.9 ml/min post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/min) were 3601.4±170.9 ml/min. There were significantly(p<.05) increased in retraining periods. 2. V˙O_2max(ml/kg/min) were significantly(p<.05) decreased from 62.3±2.9 ml/kg/min to 55.9±4.7 ml/kg/min in detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/kg/min) were 62.4±3.4ml/kg/min, 62.7±2.3ml.kg/min, 67.3±7.2ml/kg/min respectively. There were significantly(p<.05) increased in retraining periods. 3. T-C were significantly (p<.05) increased from 166.6±8.5mg/dl to 175.3±10.3 mg/dl in detraining. In 10, 20, 30 days after retraining, T-C were 160.1± 3.2mg/dl, 156.7±3.7mg/dl, 140.3±9.0mg/dl. There were significantly(p<.05) decreased in retraining periods. 4. HDL-C were 61.4±6.6mg/di pre detraining, 5.3±6.6mg/dl post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, HDL-C were 56.9±7.1mg/dl, 56.4±9.2mg/dl, 57.7±9.1mg/dl respectively. There were no significant difference in retraining periods. 5. The hormones(epinephrine. norepinephrine, growth hormone, cortisol) were changed as same patterns. Epinephrine were 26.0±7.0[g/ml pre detraining, 24.6±3.2pg/ml post detraining. In 10, 20, 30 days after retraining, epinephrine were 26.9±5.6pg/ml, 30.6±6.2pg/ml, 29.4±5.6pg/ml respectively. There were no significant difference in retraining periods. In conclusion, HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were decreased, T-C, LDL-C and TG were increased in detraining. But HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were increased, T-C, LDL-C and TG were decreased in retraining.

釜山·慶南地域의 2, 3次 醫療機關의 基本形 設定을 爲한 基本調査硏究

鄭甲烈 동아대학교 부설 산업의학연구소 1995 산업의학연구소 논총 Vol.- No.2

의료전달체계와 의료자원의 공급 등에 대한 여러 연구자들의 성적과 현재의 상황을 토대로 하여 부산·경남지역 2,3차의료기관의 기본형을 개발하고 이에 따른 개설진료과목, 소요의료인력 및 투자예산 등을 추정할 수 있는 기본자료를 얻고자 본 연구를 시도하였다. 부산과 경남지역의 입원의료수요는 1996년에 연간 1,000명당 각 798.9일 및 773.9일 이었고 외래의료수요는 일인당 연간 외래방문횟수가 각각 8.71회 및 7.89회로 1993년에 비해 약 10% 내외 증가될 것으로 추계되었다. 병상수요는 1996년에 각각 11,727병상 및 9,718병상으로 1990년 12월 당시의 병상수를 기준으로 할때 부산지역은 1995년 부터, 경남지역은 1994년 부터 병상부족현상이 초래될 것으로 추계되었다. 의료기관별 적정소요인력 추정치는 2차의료기관인 경우는 병상당 1.162-1.249명, 3차의료기관인 경우는 대학병원 1.365명, 비대학병원 1.196명으로 추정되었다. 적정개설진료과목수는 2차의료기관인 경우는 병상수별 유형에 따라 4-17개의 필수과와 1-6개의 임의권장과를 두고 3차의료기관은 23개 내외의 진료과목을 두는 것이 좋을 것으로 판단되었다. 대지구입비를 제외한 투자예산의 추정치는 2차의료기관인 경우는 병상당 3,000-5,910만원, 3차의료기관인 경우는 7,710만원 정도가 적당한 것으로 추정되었다. This study was conducted to obtain the basic data on the estimated inpatient and ambulatory care utilization amounts, number of beds requirements, proper installing medical departments, proper hospital manpower requirements and investment budget requirements based on the current circumstances and previous investigator's results for developing the basic model of secondary and tertiary medical facilities in Pusan and Kyung-Nam area. In Pusan and Kyung-Nam area, eatimated inpatient days per 1,000 population in a year were 798.9 and 773.9 days in 1996, respectively. And estimated number of visits per person for ambulatory care utilization in a year were 8.71 and 7.89 times in 1996, respectively. The estimated numbre of beds requirements in 1996 were 11,727 and 9,718 beds, respectively. And the bed-deficit situation will be led from 1995 in Pusan and 1994 in Kyung-Nam area comparing the current number of beds in December, 1990. Proper hospital manpower requirements per bed were estimated as 1.122-1.249 persons in secondary medical facilities, 1.365 persons in university hospital and 1.079 persons in non-university hospital. Proper number of installing medical departments will be judged as a good thing that setting up 4-17 necessary departments and 1-6 optional encouraging departments according to the number of hospital beds types in secondary medical facilities. And it was judged that about 23 departments were proper in tertiary medical facilities. Proper investment budget requirements except site purchase price per bed were estimated 30-59.1 million won in secondary medical facilities and 77.1 million won in tertiary medical facilities.

Palmes Tube를 이용한 실내외 NO₂농도 측정

정갑열,김정만,김용규,김준연 동아대학교 의과대학 부설 산업의학연구소 1992 산업의학연구소 논총 Vol.- No.1

실내 공기오염의 주요인자의 하나인 NO₂에 대하여 부산의 도심지역(중구의 남포동, 광복동, 창선동)과 외곽지역(서구, 사하구)의 사무실, 식당, 다방(150개소)을 대상으로 하여 NO₂에 의한 실내외 공기오염의 정도를 파악하고 NO₂에 농도에 영향을 미칠 가능성이 있는 몇가지 인자에 대하여 조사함으로써 NO₂에 의한 인체장해의 예방대책을 수립하기 위한 기초 자료를 얻고자 본 연구를 실시하였다. 조사기간은 1988년 12월부터 1989년 2월까지 동계 3개월간이었고 NO₂에측정은 Palmes method 에 의하였으며 그 결과는 다음과 같다. 1. 도심지역의 NO₂평균농도; 1) 사무실의 홀 : 0.045±0.032 ppm, 2) 식당의 주방 : 0.106±0.049 ppm, 홀 : 0.076±0.030 ppm, 3) 다방의 주방 : 0.082±0.033 ppm, 홀 : 0.077±0.041 ppm 및 4) 옥외 : 0.031±0.009 ppm이었다. 2. 외곽지역의 NO₂평균농도; 1) 사무실의 홀 : 0.036±0.019 ppm, 2) 식당의 주방 : 0.079±0.045 ppm, 홀 : 0.056±0.034 ppm, 3) 다방의 주방 : 0.054±0.024 ppm, 홀 : 0.042±0.024 ppm 및 4) 옥외 : 0.021±0.007 ppm이었다. 3.1일 연료 소비량별 홀의 NO₂농도는 5L 미만 0.037±0.017 ppm, 5∼ 10L 미만 0.047±0.027 ppm, 10∼ 20 L 미만 0.065±0.042 ppm으로 연료 소비량이 증가할수록 홀의 NO₂농도는 유의하게 증가하였다. (p<0.01). 4. 환기를 실시하지 않는 홀의 NO₂농도는가 환기를 실시하는 홀의 NO₂농도 및 옥의 NO₂농도보다 유의하게 높았고(p<0.001), 환기를 실시하는 홀의 NO₂농도는 옥외 농도와 유사하여 인공환기시 홀의 NO₂농도는 상당히 감소하였다. Recently nitrogen dioxide(NO₂) has been regarded as one of the main elements among indoor air pollutants. For the purpose of preparing the fundamental data for evaluation and control on the health effect relevant to NO₂levels, the authors measured the indoor and outdoor NO₂levels by the type of subject(office, restaurant, coffee shop) with some factors related to the indoor NO₂levels. The level of NO₂was measured by Palmes method, and this survey was carried out to 150 subjects in the Pusan area from December, 1988 to Feburary, 1989. The obtained results were as follows; 1. The mean indoor and outdoor NO₂levels at down-town 1) Hall of office : 0.045±0.032 ppm, 2) Hall of restaurant : 0.076±0.030 ppm, Kitchen of restaurant : 0.106±0.049 ppm, 3) Hall of coffee shop : 0.077±0.041 ppm, Kitchen of coffee shop : 0.082±0.033 ppm, and 4) Outdoor : 0.031±0.009 ppm 2. The mean indoor and outdoor NO₂levels at outskirt 1) Hall of office : 0.036±0.019 ppm, 2) Hall of restaurant : 0.056±0.034 ppm, Kitchen of restaurant : 0.079±0.045 ppm, 3) Hall of coffee shop : 0.042±0.024 ppm, Kitchen of coffee sho : 0.054±0.024 ppm, and 4) Outdoor : 0.021±0.007 ppm 3. The NO₂levels of Hall by daily fuel consumption were; 1) ∼5L: 0.037±0.017 ppm, 2) 5 ∼ 10L : 0.047±0.027 ppm, and 3) 10 ∼ 20L : 0.065±0.042 ppm The NO₂levels of Hall were significantly increased with the daily fuel consumption amount. 4. The NO₂levels of vented Hall was significantly lower than the NO₂levels of unvented Hall, which decreased when artificial ventilation was conducted, and the NO₂levels of vented Hall was similar to the outdoor NO₂level.

디지탈 Walsh 시�봄�필터에 관한 연구

鄭明眞,崔甲石 明知大學校 産業技術硏究所 1984 産業技術硏究所論文集 Vol.3 No.-

This paper presents the general form of transfer matrix of the digital Walsh sequency filter using the Walsh transform and the diagonal matrix. The useful model is built according with the general form of transfer matrix. And the characteristic of the filter is considered through the simulation. The filtering characteristic which is obtained from the simulation is satisfactory. It is possible that the filter is realized by means of the software or the hardware.

Dilation 연산을 이용한 기울어진 문서 영상의 보정

정재영,권갑현 동양대학교 1999 동양대학교 논문집 Vol.5 No.1

In this paper, we propose a simple and efficient algorithm for the correction of linearly skewed document images. This paper is based on the fact that there is a blank line with uniform thickness between two adjacent text lines and the slope of the line is the same as that of the document. Firstly, we apply a dilation operation to the image to separate blank lines from text lines, and we detect center points of blank lines along the vertically sampled lines. Then we calculate the slope between neighboring center points in the same blank line. Calculated slopes for the entire image are accumulated on the histogram to display the distribution of them. Finally, the peak in the histogram is detected and estimated as the slope of the document image. We adopted a lot of images of various format with hand-printed or machine-printed document to verify our algorithm and obtained the accurate results at the error bound of 0.5˚.

LMS Pisarenko Harmonic Decomposition에 의한 배경뇌파 파워 스펙트럼 추정

鄭明眞,崔甲石 明知大學校 産業技術硏究所 1987 産業技術硏究所論文集 Vol.6 No.2

In this paper, the power spectrum of background EEG is estimated by the Pisarenko Harmonic decomposition based on Least Mean Square. At the power spectral estimation, the stochastic process of background EEg is assumed to consist of the nonharmonic sinusoil and the white noise. The optimal order of this model is the 6-th order when the eigenvalue' fluctuation of autocorrlation of background EEG is considered. The estimation results are compared with the results from the Maximum Entropy Spectral Estimation and the Pisarenko Hamonic Decomposition. From the comparison results, this method is possible to estimate the power spectrum of background EEG.

무균성 뇌막염에 있어 뇌척수액 추적검사에 대한 재평가

정은경,김경석,김갑승,문경래,박상기 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.1

The author evaluated the clinical manifestation of forty cases of aseptic meningitis who were admitted in the pediatric department of the Chosun University Hospital from March 1990 to September 1990, and also observed the clinical course of two groups of aseptic meningitis divided by admitting time and reevaluated the needness of follow-up lumbar puncture for CSF examination. The author performed follow-up lumbar puncture for CSF examination to the first group, on the 7th hospital day by conventional way, otherwise only observed the clinical course without follow-up lumbar puncture for CSF examination to the 2nd group. There was no difference between both groups, and clinical improvement was seen in both groups. In conclusion, the author considers that if clinical and laboratory finding were compatible with aseptic meningitis, there may be no need for follow-up lumbar puncture for CSF exmenation.

인트라넷 환경하에서의 통합의료정보시스템에 관한 연구

김갑식,박준철,제경성,정익재 대구산업정보대학 2000 논문집 Vol.14 No.2

Now a days, Organizations have become to share unlimited field of information & activity due to growth of internet. As a result, they show a certain trend to integrated information system. This research made former information system of hospital to new integrated information system on intranet environment. This system remotely operate and arrange data base and web server. Therefore, this system is designed to keep consistency among each data, to build up data base system preparing for circumstances of which there are many simultaneous user, to conform with operational process in approaching method of data base. We expect that competency-ability of hospital would become much higher as construction of integrated medical information system made them possible share of medical information among each section, prompt management analysis through smooth operational process.

선호의식분석을 통한 교통수단 전환모형 구축에 관한 연구

김갑수,황정훈 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.1

This thesis studies on the development of transportation mode change model by the stated preference(SP) data analysis when the subway as a new traffic mode is introduced. The results of this study are as follow; 1.The results of SP data analyses for the subway operating conditions. Show that people most prefer to about 10 minute walking distance from their places to subway station, about 5 minute waiting time for next subway service, about 61 to 80 percentage of the reduction of travel-time, and about 600 won for the service fare. 2.The analyses of equivalent time coefficient for the traffic modes(as the value of equivalent time coefficient of bus is 1.00) showed that car, taxi, subway, walking, waiting, and single transfer have equivalent time coefficient of 0.75, 0.81, 0.83, 2.33, 1.71, and 14.98, respectively. These results indicate that there exist an apparent difference on an effort due to the traffic modes. The results of the analyses of value of time should that the male and female have a different value of time(13.75 won/minute and 10.75 won/minute, respectively) and people from 35 to 44 years old have the highest value of time(14.03 won/minute) among the different age groups. 3.The results of travel mode-change models to the subway by the present traffic modes. Travel mode-change models prepared in this study were established by the application of binary logit model based on generalized time. The results of the statistical examination of each parameter used in these models were significant. In addition, the value of likelihood ratio index(ρ2) of the models were stable(0.303 and 0.247 for bus and car, respectively) and the models yielded relatively high hit ratio(78.8% and 75.6% for bus and car, respectively).