가족성 Nemaline 근병증 한 례

홍태용,박재현,김홍동,강희태,조혜제,선우일남,김태승 대한신경과학회 1993 대한신경과학회지 Vol.11 No.4

서울시 수도수의 이화학적 수질조사

홍태용 한국환경보건학회 1981 한국환경보건학회지 Vol.7 No.1

This survey was carried out to investigate the temperature, pH value, nitrogen (ammonia, nitrite, nitrate), turbidity, color, chloride ion, $KMnO_4$ consumed, and hardness as chemical analysis of the tap water in Seoul city area during the period from September to Octobor, 1979, and to observe the differences among the values by the distance from the water purification plant and by the district supplied tap water from-the each water purification plant. The results obtained were as follows: 1) An average of the water temperature was $19.8\pm 0.2\circ$C. 2) An average of pH was $7.18\pm 0.02$. The difference among each district was statistically significant (p<0.01), but it was not observed among each distance. 3) An average of turbidity was $1.25\pm 0.12$ ppm. The difference among each district was highly significant (p<0.01), respectively, but not among each distance. 4) An average of color was $1.43\pm 0.16$ ppm, and there were statistically significant differences by the distance and by the district (p<0.01). 5) An average of ammonia nitrogen was $0.022\pm 0.005$ ppm. The differences among each distance, and district were statistically significant (P<0.01). 6) An average of nitrite nitrogen was $0.0050\pm 0.0013$ ppm, and the difference among each distance was highly significant (p<0.01), respectively, and each district showed statistical significance (p<0.01). 7) An average of nitrate nitrogen was $0.82\pm 0.08$ ppm. The difference among each district was significant (p<0.05), and each distance showed high significance (p<0.01). 8) An average of $KMnO_4$ consumed was $3.73\pm 0.16$ ppm, and the difference among each district was significant (p<0.05), but it was not observed among each distance. 9) An average of chloride ion was $8.56\pm 0.28$ ppm, and the difference among each district was higly significant (p<0.01), respectively, but it was not observed among each distance. 10) An average of hardness was $40.69\pm 1.17$ ppm, and there was statistically significant difference by each district (P<0.01), but not by distance. 11) The interrelation between temperature and pH of the tap water revealed the negative correlation from the coefficient of it as showed r=-0.6073 and p<0.01. 12) Except water temperature, there were negative correlationships between pH and other water qualities. 13) Correlation coefficients of $KMnO_4$ comsumed and ammonia nitrogen, nitrite nitrogen were statistically significant but that of $KMnO_4$ consumed and nitrate nitrogen showed no statistical correlationship. 14) Ammonia nitrogen seems to have high correlationship with nitrite nitrogen(r= +0.6669), but not with nitrate nitrogen. 15) Nitrate nitrogen seems to have statistically significant correlationship with nitrite nitrogen (r=+0.4959), but not with ammonia nitrogen. 16) The interrelation between chloride ion and hardness of the tap water revealed positive correlation from the coefficient of it as showed as r=+0.4888 and p<0.01.

회전기계의 고장안전진단 사례연구

홍태용,박수홍,Hong, Tae-Yong,Park, Soo-Hong 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.2

본 연구에서는 회전기계에서 발생할 수 있는 고장에 대한 안전진단에 대한 사례연구이다. 각각의 회전기계에 대하여 진동분석을 통한 고장발생유무를 각종의 측정 데이터를 이용하여 분석하여 향후에 발생할 수 있는 고장에 대한 안전진단에 대한 방법을 연구하였다. 본 연구에서 제안한 상태 감시 및 진단 방법을 적용한 결과, 회전기계의 추후 고장을 예측할 수 있었다. In this paper, We study case for rotary machine with a breakdown analysis. Also We analyze the solution of the safety and the future breakdown of the each rotary machine through vibration analysis using measurement data. The implementation of the measurement and the test results are discussed. The result that is applied condition Monitoring & Diagnostics on this paper show the future breakdown of rotary machine.

소생후 혼수환자의 예후 평가지표로서의 ^1H-자기공명분광법의 유용성

홍태용,김영민,최승필,박규남,김세경,안국진 대한응급의학회 2003 대한응급의학회지 Vol.14 No.1

Purpose: The objective of this study was to investigate whether proton magnetic resonance spectroscopy (^1H-MRS) is useful in the prediction of the neurological outcome for comatose patients after successful cardiopumonary resuscitation (CPR). Methods: We prospectively studied 22 patients with a comatose mentality existing for longer than 1 day after cardiac arrest. ^1H-MRS examinations were scheduled to be performed within 5 days after restoration of spontaneous circulation (ROSC). All ^1H-MRS readings were performed by a neuro-radiologist blindly. The best cerebral performance category (CPC) during 6 months after ROSC was used as the final outcome and classified as good (CPC 1-2) or poor (CPC 3-5). Results: Elevated cerebral lactate resonances were found in 14 patients. All of the 14 lactate-positive patients experienced a poor outcome. Five of the 8 lactate-negative patients recovered without neurologic detects, but three of them suffered from severe neurologic defects. The elevated cerebral lactate resonance distinguished between good outcomes (n=5) and poor outcomes (n=17) with three false negatives (sensitivity 82%) and no false positives (specificity100%). Demonstration of brain lactate in ^1H-MRS (p<0.05) proved to be significant in terms of a poor prognosis. Conclusion: ^1H-MRS is of great benefit in the prognostic evaluation of comatose patients with anoxic-ischemic encephalopathy after successful CPR.

노인성 치매와 공적요양보장제도에 관한 토론

홍태용 한국정신건강사회복지학회 2005 한국정신건강사회복지학회 학술발표논문집 Vol.2005 No.11

철강회사에서 기계 고장 진단 사례연구

홍태용(Tae-Yong Hong),박수홍(Soo-Hong Park) 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.2

회전기계에서는 예후 신호 없이 고장되는 경우는 거의 없으며, 따라서 설비고장은 신호를 감시함으로서 고장을 예측, 회피할 수 있다. 본 연구에서는 회전기계에서 발생할 수 있는 고장에 대한 안전진단에 대한 사례연구이다. 각각의 회전기계에 대하여 진동분석을 통한 고장발생유무를 각종의 측정 데이터를 이용하여 분석하여 향후에 발생할 수 있는 고장에 대한 안전진단에 대한 방법을 연구하였다. 결과에서 보는 바와 같이 제안된 측정방법으로 안정한 상태 감시 및 진단 결과를 보여준다. Rotating equipment seldom fails without notice, so breakdowns can usually be predicted and avoided by watching for signs of failure. In this paper, We study case for rotary machine with a breakdown analysis. Also We analyze the solution of the safety and the future breakdown of the each rotary machine through vibration analysis using measurement data. The implementation of the measurement and the test results are discussed. The result with suggested method showed netter stable Condition Monitoring & Diagnostics.

다채널 진동 모니터링 장치 개발

홍태용(Tae Yong Hong),박수홍(Soo Hong Park) 한국전자통신학회 2016 한국전자통신학회 논문지 Vol.11 No.7

산업현장에서의 회전체 기기의 유지보수안전관리를 위한 설비에 대한 설계에 대한 연구이다. 중급 진동 모니터링 시스템 시장에 진입하기 위한 다채널 설비 자가 진단 모니터링 장치를 개발하였고, 이 시스템의 특징은 확장성과 유연성을 부여하였다. 한 개의 신호를 처리하기 위해서는 한 개의 독립적 채널이 필요하나, 개발된 제품은 신호 처리 카드 한 장이 4채널을 처리하다. 한 개 랙에는 독립적인 이중화 전원장치, 디스플레이가 설치되어 진동측정값을 별도의 컴퓨터 없이 현장에서 바로 확인할 수 있다. 베어링 결함 감지는 진동 감시의 기본이지만 일반적인 진동 속도나 가속도에서 나타나지 않는 경우가 있다. 따라서 저주파대역의 반복적이지 않은 진동은 필터링하고 진폭 변조 시키는 기술이 기속도 엔벨로핑 기술이다. 이 기술이 적용된 진동 분석 장비를 개발하였다. 개발된 시제품은 진동오차 범위에서 작동함을 보여주었다. This study is about design for the Rotational Instrument of the Industry factory which is used management safety and maintenance. We developed the multichannel vibration monitering system of the self-diagnosis for middle level CMS(Condition Monitoring System) market, and that system are new features to the expandability and flexibility. Normally one channel is used for treating one signal, but developed instrument can treat four channel with one signal processing card. One rack have redundant power supply and displace and it can check vibration measurement value in field without computer. Bearing fault detection is fundamental of vibration surveillance, but sometimes can not check with vibration velocity and acceleration. So it need the filtering and the amplitude modulation on the acceleration enveloping technology when irregular vibration is happened. We developed the vibration analysis instrument which is applied such technology. And the development prototype shows activated within the vibration error limit.

절삭유 필터링에 따른 엔드밀 가공면 입자 임베딩 현상에 관한 연구

홍태용(Tae-Yong Hong),황인옥(In-Ok Hwang),김전하(Jeon-Ha Kim),강명창(Myung-Chang Kang),김정석(Jeong-Suk Kim) 한국기계가공학회 2005 한국기계가공학회 춘추계학술대회 논문집 Vol.2005 No.-

만성 기관지 천식 마우스 모델에서 항 IgE 항체가 기도염증에 미치는 효과

홍태용 ( Tai Yong Hong ),이숙영 ( Sook Young Lee ),강지영 ( Ji Young Kang ),김주상 ( Ju Sang Kim ),김승준 ( Seung Jun Kim ),박성학 ( Sung Hak Park ),김영균 ( Young Kyoon Kim ) 대한천식알레르기학회 2009 천식 및 알레르기 Vol.29 No.1

Background: Asthma is a disease characterized by chronic airway inflammation and airway hyperresponsiveness. Immunoglobulin E (IgE) plays a key role in the pathogenesis of allergic diseases and asthma. Recently, nonanaphylactogenic antihuman IgE antibody has been used as a therapeutic agent for asthma. Objective: The present study investigated the effect of anti-IgE antibody on the airway inflammation and hyperresponsiveness (AHR) in a mouse model of chronic asthma. Method: We developed a mouse model of chronic asthma for which ovalbumin (OVA)-sensitized female BALB/c-mice were repeatedly exposed to intranasal OVA administration twice a week for 3 months. Anti-IgE antibodies were intravenously administered starting on the 38th day, the next day after 3 challenges and there after once a month during the intranasal OVA challenge of 3 months. Result: Mice chronically exposed to OVA developed sustained eosinophilic airway inflammation and AHR to methacholine compared with control mice. Treatment with anti-IgE antibody inhibited the development of AHR and eosinophilic inflammation. Moreover, anti-IgE antibody treatment reduced the interleukin-5 and interleukin-13 in bronchoalveolar lavage fluid but did not show the change in interleukin-10 and transforming growth factor-β1 levels. Conclusion: These results suggest that anti-IgE treatment can modulate airway inflammation via regulation of Th2 cytokines. (Korean J Asthma Allergy Clin Immunol 2009;29:53-59)

연하장애를 동반한 허혈성 뇌졸중의 임상적 특성

김장성,홍태용 인제대학교 1993 仁濟醫學 Vol.14 No.4

저자 등은 1990년 3월 1일부터 1992년 2월 28일까지 인제대학교 부속 상계백병원 신경과에 입원했던 허혈성 뇌졸중 환자 173명을 대상으로 연하장애 동반유무에 따른 임상적 특성의 차이를 비교 분석하여 연하장애 동반 환자들의 허혈성 뇌졸중의 특성을 규명하였다. We studied 173 ischemic brain stroke patients to investigate clinical characteristics of ischemic brain stroke with dysphagia. Sixty five patients(37.6%) had ischemic brain stroke with dysphagia while 108 patients had ischemic brain stroke without dysphagia. The two groups were compared with various clinical characteristics of ischemic brain stroke. Statistical analysis between patients with dysphagia and those without dysphagia revealed that age, Canadian Neurological Scale, dysarthria, facial weakness, gag reflex, tongue deviation and aspiration pneumonia are significant clinical characteristics distinguishing the two groups. The score of Canadian Neurological Scale is closely correlated with presence of dysphagia.