우리나라 일부 석면사업장의 석면폐 유병률

백도명,백남원,최정근,손미아,임정기,이원진,문영한,박정선,최병순 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

Asbestos industry has been in operation over 60 years in Korea. However, the prevalence of asbestosis has not been yet reported. With rapid turn-over of workers, previous cross-sectional studies of current workers on the job could not find cases with exposures long enough for the development of asbestosis. This study was done to evaluate asbestosis prevalence of those worksites with operation history of more than 20 years. In total, 139 workers from 5 worksites were examined. Asbestos industries covered in the study include 2 asbestos textile, 1 brake lining, and 2 ship repairing worksites. Chest x-ray was taken from all workers and read by two experts familiar with pneumoconiosis classification according to 1980 ILO guidelines. Those with findings compatible with asbestosis were further ckecked with high resolution computerized tomography (HRCT). Pulmonary function tests were done according to ATS guidelines, and occupational and previous medical history was taken through a standardized interview. Air-borne asbestos was measured according to NIOSH method 7400. The air-borne asbestos concentrations ranged from 0.2-1.3 f/cc for asbestos textile, from 0.7-1.0 f/cc for brake lining, and from 6.3-7.8 f/cc during asbestos removal at ship repairing worksite. Of the 139 workers 25 had abnormal chest radiographic findings, and 10 of them had findings compatible with pneumoconiosis. When work history and current asbestos measurements were accounted, 9 workers who had more than 10 years of asbestos exposure history showed chest radiographic findings of pneumoconiosis with Finally, 4 workers showed finding of pulmonary fibrosis and/or pleural thickening at HRCT, and 2 of them had restrictive lung function changes. The study results showed that, among 139 subjects, there were 4(3%) definite asbestosis cases confirmed with HRCT. The prevalence of probable asbestosis was 7% for 10-14 years of exposure, 13% for 15-19 years of exposure, and 23% for 20 or more years of exposure. The prevalence of compensable asbestosis with abnormal lung function was 4-6% for those with 15 or more years of exposure.

자기-광전이 형식을 유도하는 두 가지 다체사영연산자 방법의 비교

최상돈,이현정,석적영,조상규,강남룡 慶北大擧校 師範大學 科學敎育硏究所 2000 科學敎育硏究誌 Vol.24 No.-

We consider a magneto-optical transition theory based on the many-body projection technique. And we use two kinds of projectors ; projection-isolation operators and projection operators. The second method turns out to be more convenient than the first method.

국제회의 참가자의 국제회의 기획업에 대한 만족도 조사에 관한 연구

남태석,정연국,최정은 한국관광정책학회 2000 觀光政策學硏究 Vol.6 No.3

Conventions have become extremely important in today's business world. Every fields has its conventions : Professions, trade unionism, education, arts, commerce, politics, and fraternalism all rely on conventions to bring together the membership's cross section of ideas. At past sutudies, there were few detailed studied for the PCO services in Korea even though they have taken several accesses to the international convention in the hardware aspect like facilities as well as in the software aspect. Whereas, for the activation of the international convention industry, this study shows how much the participant are satisfied with the service of the PCO, and then presents the way out of tough conditions of Korean tourism as holding more international convention, which invites quality foreign tourists in large number. Therefore the object of this study shall be of help to the desirable development of international convention industry through the survey of the satisfaction with the PCO service based on the positive investigation and the view of attendant. In a common view of domestic and foreign people, while Korean PCO comes up to the standard in the planning and working out the international convention, it cannot meet the various requirements of attendants in the specialized knowledge interpretation and relationship. Therefore it needs the new establishment of the developend and systmatic departure to bring up the specialized PCO.

만성두통환자에 대한 침치료가 심박변이도에 미치는 영향

정인태,이상훈,김수영,차남현,김건식,이두익,이재동,임사비나,이윤호,최도영 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objective : The purpose of this study was to assess the effect of acupuncture treatment for chronic headache patients using power spectrum analysis of the heart rate variability(HRV). Methods : 15 clinical experiment participants were gathered and through a questionnaire patients who experienced headache for more than 4 hours a day and more than 15 days per month were qualified as Chronic Headache patients. Treatment was applied 2 times a weeks for 8 weeks. The acupoints, GV20, HN23, ST8, HN46, TE17, GB20, LI20, LI11, LI14, ST36, and LR3 were stimulated for 20 minutes. The effects of acupuncture treatment were analyzed using power spectrum analysis of the HRV, HRV was recorded before and after acupuncture treatment. Results : HRV before and after treatment was compared after 8 weeks of acupuncture treatment. Increase in mean values of SDNN and RMSSD were observed but the increases were not statistically significants. Increase in mean values of TP, LF and HF were observed but, the increase was significant(p<0.05) only in TP. Conclusions : The results suggest that acupuncture treatment on chronic headache patients can increase the activity of autonomic nervous system. Further use of HRV for quantitative analysis of acupuncture treatment on autonomic nervous system related symptoms is suggested.

만성두통환자에 대한 동서협진의 임상적 연구

정인태,이상훈,김수영,차남현,김건식,이두익,이재동,임사비나,이윤호,최도영 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objective : Because the cause and etiology of chronic headache are not yet fully explained, the treatment of this symptom is not simple. In order to study the effectiveness East-West pain treatment on chronic headache, we evaluated its effect of pain alleviation and quality of life improvement on chronic headache patients who were treated with nerve block and acupuncture, and only acupuncture for eight weeks. Methods : 92 clinical experiment participants were gathered and through a questionnaire patients who experienced headache for more than 4 hours a day and more than 15 days per month were qualified as chronic headache patients. The qualified patients were classified into two groups, nerve block and acupuncture group(EW group, n=49) and acupuncture group(E group, n=43). Treatment was applied 2 times a weeks for 8 weeks. The acupoints, GV20, HN23, ST8, HN46, TE17, GB20, LI20, LI11, LI14, ST36, and LR3 were stimulated for 20 minutes. The effects of two groups were analyzed using VAS scores and BPI(Brief Pain Inventory). Results : The VAS and BPI after four weeks of treatment showed significant improvement among two but differences between the three groups was statistically insignificant. The VAS and BPI of the EW group after eight weeks of treatment showed statistically significant improvement compared to the other two groups. Conclusion : The pain treatment for chronic headache might be contributed to improvement of quality of life as well as alleviation of pain of chronic headache patients. It was suggested that the West pain treatment in combination with East pain treatment might be an useful modality to improve the pain and quality of life in chronic headache patients.

로드셀을 이용한 직물의 신축성 측정에 관한 연구

최정수,김은석,주기세,왕지남 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(1)

So far, the common elasticity data of textile fabrics has not been present because the method depends on the knowledge of measurement operators. In this paper, the new measurement equipment using road cell is presented to measure the coefficient of textile fabrics in real time. The measurement method is based on the volt: among textile fabrics. The textiles with strong elasticity are high voltage produced from others are low. The presented method can be applied to visualize the textile, sew the cloth, contrc textile fabrics. Also, these measurement datum are used to B2B electronic trading system.

수용성 절삭유제 내에서 Saccharomyces cerevisiae와 Escherichia coli의 성장에 관한 연구

정광진,최희영,김장규,원성호,김남기 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.2

The water-soluble cutting oil was used in the type of the mixture of additive lubricant, surfactant, etc., as the organic nutrients, with water. Therefore it was easy to be affected by microbials ; they brought the bad odor by putridity, decreased the cutting property, and destroyed the emulsion phase. In the study using cells, Saccharomyces cerevisiae and Escherichia coli, we studied the effect of concentration and dilution ratio on the growth of cells and the cell growth rate, the pH variance and the change of oil's concentration. The results obtained in this experiment were as follows : 1) The result of test dilution ratio (water:oil) vs. cell growth was that by using E. coli, the growth was better in this order in emulsion type (sample 1) 50:1 > 30:1 > 100:1, and in the soluble type (sample 2) the order was 100:1 > 50:1 > 30:1. The effect of the cutting oil's concentration on the Saccaromyces cerevisiae's was less in this order 100:1 < 50:1 < 30:1 ; the maximum growth was occurred at 100:1. 2) In sample 1 by using E, coli, pH range was changed from 9.5 to 8.0 and refractive index(the cutting oil's concentration) was changed from 1.3327 to 1.3318. And in the test using S. cerevisiae, pH range was varied from 9.5 to 6.2 and refractive index was changed from 1.3330 to 1.3310. In sample 2 by using E. coil, pH was changed to 8.9 and refractive index was changed from 1. 3315 to 1.3313 and in that of using S cerevisiae, pH was changed to 8.1 and refractive index was decreased from 1.3355 to 1.3340.

괴사성 치은구내염환아의 증례보고 : CASE REPORT

최남기,정희경,양규호,김선미 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.1

괴사성 치은염(Necrotizing ulcerative gingivitis, NUG), 괴사성 치주염(necrotizing ulcerative periodontitis, NUP),괴사성 구내염(necrotizing stomatits, NS), 그리고 수암(noma, cancrum oris)은 급속도로 파괴적이며 쇠약하게 하는 잠재성이 큰 구강감염으로 질환의 같은 진행과정에 대해 다른 임상단계로 간주되기도 하나 집합적으로 Vincent's infection, infectious oral necrosis 또는 괴사성 치은구내염(Necrotizing gingivostomati-tis, NG)라고 한다. 이러한 necrotizing gingivostomatitis(NG)의 발생률은 0.19~0.5%이며 2~6세에 가장 높은 발병율을 보인다. Necrotizing gingivostomati-tis는 치명적인 바이러스 감염과 면역체계가 약화된 경우 발생할 수 있으며 주 진단학적 증상으로 동통, 치간유두 부위의 궤양이나 괴사, 치은출혈이 있으며 이차적인 증상은 위막 등이 있다. 이에 본원 소아과에서 의뢰되어 necrotizing gingivostomatitis로 진단받은 환아의 구강내 소견 및 치료경과에 대해 보고하고자 한다. Necrotizing ulcerative gingivitis(NUG), necrotizing ulcerative periodontitis(NUP), necrotizing stomatitis(NS), and Noma(cnacrum oris) are rapidly destructive, debilitating, and potentially serious oral infection which considered to be different clinical stages of the same process. These have been collectively referred to as: Vincent's infection, infectious oral necrosis, or necrotizing gingivostomatitis(NG). Prevalence of necrotizing gingivostomatitis is 0.19~0.5% and peak incidence is 2-6 years of age. The etiology and pathogenesis of necrotizing gingivostomatitis have been associated with virulent bacteria and impaired host defense and the primary diagnostic signs are pain. interdental ulceration or necrosis. and gingival bleeding. Secondary diagnostic sign is pseudomembrane. This case report was about oral conditions and treatment of the patient who referred from the Dept. of PED and diagnosed a necorotizing gingivostomatitis.

중학교 남자 테니스 선수의 운동기능수준별 시합 전 경쟁상태불안

남인수,최인태,전중기,윤재만,고성경,이종삼,임승현 대구대학교 인문과학연구소 2008 人文科學硏究 Vol.31 No.-

The purpose of this study was to investigate if there is any difference in the level of competitive state anxiety according to the level of motor skill before the game and to provide the players with basic data for the mental practice. The subjects of this study consist of 20 men's a middle school tennis players. The experimental group was divided into superior players group and inferior players group. And then by using a CSAI-2 questionnaire, three subfactors of competitive state anxiety, or cognitive state anxiety, somatic state anxiety and state self-confidence were measured. The method of measurement was carried out three times, or one week, one day and two hours before the game. The results of this study were as follows. First, About both cognitive state anxiety and somatic state anxiety, inferior players were significantly higher than superior players. Second, About state self-confidence, superior players were significantly higher than inferior players. Third, As the game was around, both cognitive state anxiety and somatic state anxiety which all the players including superior and inferior players had increased. But the state self-confidence of all players decreased.

응급실 방문 정신과 환자의 지역특성에 따른 질병행동 비교 : 서울과 구리의 경우

최주연,정운섭,박용천,남정현 漢陽大學校 精神健康硏究 1999 精神健康硏究 Vol.18 No.-