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공정시스템,이동현상,화학공정안전 : 필름 가공 공정에서의 이상 감지 및 진단
윤동명 ( Yun Dong Myeong ),이영학 ( Lee Yeong Hag ),한종훈 ( Han Jong Hun ),안훈성 ( An Hun Seong ),장사윤 ( Jang Sa Yun ) 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.5
The fierce competition in the polymer film and sheet market requires the industry to satisfy much higher product quality specifications. This paper proposes a monitoring and diagnosis method based on multivariate statistical techniques which help us reduce the amount of off-spec product. The method has been applied to an industrial web forming plant and has proven that process faults such as the leak of polymer fluid can be early detected before it is developed into the production of bad quality product.
P-47 : Multiobjective Optimization of Coated Steel Plate
이창송,윤동명,한종훈 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.2
It is very important to maintain three mechanical properties highly and uniformly in a Continuous Galvanizing Line(CGL). These mechanical properties, Yield Point(YP), Tensile Strength(TS), and Elongation(EL), are core output responses in a CGL. In order to high and uniform qualities level, we show optimal operation conditions setting using following multiobjective optimization procedure. First of all, we selected process variables which are contribute to significant changes of three output responses based on interviews with engineers and operators and statistical approach. Secondly, we built three 2nd order regression model using stepwise MLR. Finally, we found optimal operation conditions using Maximin Desirability Function approach by Kim and Lin. We expect that these three mechanical properties will be improved excellently by application to real CGL processes.
선천성 심기형아에서 Pressure-Limit Control Accessary 를 이용한 Anesthetic Drager Infant Ventilator 의 유용성
박정현,방서욱,윤동명,유은숙 대한마취과학회 1995 Korean Journal of Anesthesiology Vol.29 No.4
Pressure-limit ventilators are used because it is believed that they decrease the incidence of pulmonary gas leaks and chronic lung disease. The disadvantage of pressurelimit ventilators is that there is no automatic compensation for changes in compliance and resistance of the lung and the chest wall. Consequently, if lung compliance decreases, tidal volume will decrease and blood gases will worsen. The aim of this study is to find the adequacy for the oxygenation and ventilation of volume-limit ventilator with pressure-limit control accessary in pediatric patient with congenital heart disease. The pressure-limit control accessary for anesthetic ventilator(AV-E, North America Drager, Bedford, USA) in 36 pediatric patients undertaken open heart surgery and thoracotomy, retrospectively, were employed. The patients were divided into 3 groups according to their body weights. The respiratory rate of group I ($lt;5 kg, n=12) was 25/min, group II(≥5, $lt;10 kg, n=6) was 20/min and group III(≥10, $lt; 20 kg, n=8) was 15/minThe patients were divided into another 2 groups, A(n=30) or B(n=6), with the supine or lateral, respectively according to the operation position. The results showed all the values of arterial blood gases almost within normal limits, except one patient in each group. We concluded that anesthetic Drager infant ventilator with pressure-limit control accessary was useful during controlled ventilation, and this is suitable for the prolonged operation in pediatric patients with the supine or lateral position.
박형욱,김용기,임동명,윤신의,최봉남 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1
The authors observed the clinical findings of 99 cases of traumatic drum perforations, who visited the department of otolaryngology of Chosun University Hospital and KwangYang Hospital from January 1988 to August 1991 The results obtained were as follows; 1) As an etiologic factor, the indirect trauma occupies the most case (79.8%), out of which the most cases is by assault. 2) Age distribution indicates 30 decade(32.3%) and 20 decade(26.3%) in the declining order and sex distribution indicates male to female is 1;1.3. 3) On occupation, house wife is the most frequently involved (35.4%) and officials & students are in the next order. 4) Most common complaint is Hearing impairment and the next complaints are tinnitus, otalgia and hemorrhage in order. 5) The most frequent site of perforation is the central portion of anteroinferior and posteroinfehor quadrant, Gradel in size and triangular shape are common. 6) Seasonal variation indicates that the most frequent occurence of perforation is on summer. 7) Average 25-35㏈ of hearing loss is most common, and the degree of hearing loss is well correlated with the size of perforation. 8) Two way of therapeutic measure are compared. a. stimulating with trichloroacetic acid ; spontaneously healing in 22 cases (22.2%) b. closing procedure with paper patch ; healing in 68 cases (68.7%) 9)The overall healing time is within 2 months in the most of case (about 80%).
박상민,최광준,정현일,양성욱,곽동명,이근숙,윤주화,전용덕 대한노인병학회 2009 Annals of geriatric medicine and research Vol.13 No.3
Splenic infarcts are comparatively less common lesions. Caused by the occlusion of the major splenic artery or any of its branches, they are almost always due to emboli that arise in the heart. The spleen, along with the kidneys and brain, ranks as one of the most frequent sites of localization of systemic emboli. Infarcts may be small or large, multiple or single, and sometimes involve the entire organ. Usually these infarcts are of the bland anemic type. Septic infarcts are found in vegetative endocarditis of the valves of the left side of the heart. Much less often, infarcts in the spleen are caused by local thromboses, especially in leukemia, myeloproliferative syndrome, sickle cell anemia, polyarteritis nodosa, Hodgkin's disease, and bacteremic diseases. We experienced a rather unusual splenic infarction due to lymphoma in a 80-year-old man.
식도 및 위정맥류 히스토아크릴 치료 후에 발생한 비장 경색 및 총간동맥 색전증과 폐색전증
남기석,최광준,정현일,양성욱,곽동명,박상민,윤주화,이근숙,최한섶,권혁춘,남승우 대한노인병학회 2008 Annals of geriatric medicine and research Vol.12 No.4
B leeding from esophageal and gastric varices is a life-threatening com plication for patients w ith liver cirrhosis. E ndoscopic injection of H istoacrylR (N -butyl-2-cyanoacrylate) has been reported to be an effective therapy for variceal bleeding; however, distal em bolization of unwanted areas has been described in som e cases with a fatal outcom e. A change in the rationale of treatm ent of variceal bleeding in patients with liver cirrhosis was not advocated because of the infrequency of such cases. W e report two cases of splenic infarction with celiac trunk and pulm onary em boli as serious com plications of H istoacrylR injection.