기포탑 내의 중금속 수용액에 대한 기-액접촉면적과 물질전달에 관한 연구

한승완,김상렬,윤영웅 東亞大學校 1992 東亞論叢 Vol.29 No.1

기포탑 내에서 중금속 수용액에 대한 기체 체류량, 기포경, 기-액 계면적 및 액상 용량물질 전달계수를 용액의 물성과 분산판의 종류에 따라 실험하였다. 기체 체류량, 기-액 계면적 및 액상 용량 물질 전달계수는 기체 속도와 용액의 농도가 증가함에 따라 증가하는 경향을 보였다. 기포경은 용액의 농도가 증가하면 감소하였고 기-액 계면적과 기체 체류량 사이에는 직선 관계를 나타내었으며, 기체 체류량과 액상용량물질전달계수에 대한 새로운 무차원식을 구하였다. In the experiment of heavy metal solution in the bubble column, gas hold up, bubble diameter, gas liquid interface area and volumetric liquid phase mass transfer coefficient are measured according to liquid properties and various perforated plates. Gas hold up and gas liquid interface area increase as the gas velocity and liquid concentration increase. Bubble diameters decrease as the liquid concentra-tions increase. The gas liquid interface areas are directly proportional to the gas hold up. The new dimensionless correlations of gas hold up and the volumetric mass transfer coefficients are obtained.

정신증상을 수반한 급성 간헐성 폴피리아의 1예 보고

한상엽,오민웅,김헌석,최수호 大韓神經精神醫學會 1972 신경정신의학 Vol.11 No.2

This is a brief report on a case Acute Intermittent Porphyria observed in the St. Mary's Hospital, Catholic Medical College, Seoul, Korea. The case was originally admitted to the internal medicine department where initial diagnostic workup was made. The case, however, showed various psychoneurotic signs which impressed both internists as well a psychiatrists who saw the case upon consultation that the patient might as well be suffered from hysteria. Consequently the Patient was transfered to the psychiatric free-ward where further observation, family study as well as various laboratory tests thought to necessary, were done. While family study revealed(see pedigree) that one of the patient's aunt and her mother had suffered from the illness which seemed similar with the patient's present illness, and two of her siblings were also found to have suffered from the almost identical illness in the past. Examination of urine also revealed excess in amount of porphobilinogen and uroporphyrin in the urine. Authors stressed the importance 1) interdepartmental consultation, and also of 2) the needs of careful review and evaluation of the results of the basic and further laboratory tests for which paychiatrists tend to pay less attention to those cases with neurotic manifestations.

인터넷 기반에서 자동화 복합 공정 제어 시스템 구현

한얼,박성무,허지웅,홍상은 순천향대학교 부설 산업기술연구소 2008 순천향 산업기술연구소논문집 Vol.14 No.1

Recent advances in information technology and internet based skills have an effect on the structure of production for a conventional industry, In the future, the concept of 'e-automation' will be used as a total solution for improving the competitiveness of company. This paper introduces the internet-based monitoring and control system as a new concept to improve productivity in industrial manufacturing. The major functions of the developed system are (1) integrating the different type of PLC(GL0FA-G3 and MELSBC-Q), (2) connecting the dual communication protocols (TCP/IP and RS-232C) and (3) supporting the MMKMan Machine Interface). The operating system is developed using LabVIEW Program and the system connects with internet for remote monitoring and control methods.

瑕疵補修請求權에 관한 비교법적 검토

韓雄吉,盧永相,柳在南,鄭己鎬 동아대학교 법학연구소 1993 東亞法學 Vol.- No.15

관동맥 질환 환자에서 전산화단층촬영상의 복부지방 분포 및 형광안저 촬영

한혜자,홍종면,차상훈,김동운,남기병,최미영,강세웅,박남규,이석재 충북대학교 의과대학 충북대학교 의학연구소 1996 忠北醫大學術誌 Vol.6 No.2

배경 및 목적 : 죽상경화증의 원인 인자중 하나인 복부지방의 축적도를 복부 전산화 단층 촬영술로 정량화 하여 관동맥 질환과의 상관 관계를 살펴보고자 하려고, 또한 형광 안저 촬영 검사상의 죽상 경화증 정도와 관동맥 질환과의 상관 관계를 알아보고자 하였다 대상 및 방법 : 관동맥 조영술을 시행한 환자중 관동맥조영술 소견상 50% 이상의 협착이 있는 경우를 관동맥 질환군(n=15)으로 정의하였고, 관동맥 조영술 소견상 관동맥 질환이 없고 허혈성 뇌혈관질환, 당뇨병 및 고혈압이 없는 환자들을 대조군(n=11)으로 하였다. 배꼽 위치에서 복부 전산화 단층 촬영을 시행하여 총 복부 지방면적(total abdomen fat area, TAFA). 복강내 지방면적(abdomen visceral fat area, AVFA) 및 복부 피하지방면적(abdomen subcutaneous fat area, ASFA)을 측정하였고, 그 비를 구하여 비교 분석하였다 또한 형광 안저 촬영 검사를 시행하여 동-정맥비와 동-정맥교차수 및 팔망막 순환기 시간을 측정하여 비교 분석하였다. 결과 : 1) 복부 전산화 단층 촬영 : 대조군과 관동맥 질환군은 복강내 지방면적/(AVFA/TAFA)은 각각 53.9±8.3, 56.1±8.5으로 통계적으로 유의한 차이가 없었고, 또 복강내 지방면적/복부 피하지방면적(AVFA/ASFA)도 각각 0.90±0.30, 0.82±0.26으로 통계적으로 유의한 차이가 없었다 (p>0.05). 2) 형광안저 촬영 검사 ; 대조군과 관동맥 질환군에서 동-전맥비(%)는 각각 72.1±4.9, 62.5±6.1, 동-정맥 교차수는 0.3±0.5, 1.1±1.1, 팔망막 순환기 시간(msec)은 15.3±1.8, 17.8±4.0으로 세 지표 모두에서 통계적으로 유의한 차이가 있었다 (p<0.05). 결론 : 관동맥 질환 환자에서 전산화 단층촬영을 이용하여 구한 복부지방의 분포양상(복강내 지방의 구성 비율 등)은 정상 대조군과 차이가 없었다. 관동맥 질환 환자와 정상 대조군에서 형광 안저 촬영 검사로 측정한 동정맥 직경비, 동정맥교차현상수 및 팔망막순환시간은 각각 통계적으로 의미 있는 차이가 있었다 Background : We quantitatively evaluated the abdominal fat distribution by computed tomography(CT) in coronary artery disease patients and the findings of fluorescence angiography in coronary artery disease patients. Methods: Among the patients who were done coronary angiography(CAG), the control group(n=11) has no angiographically significant stenosis(<50%) and the coronary artery disease(CAD) group(n=15) has more than one significant stenosis(>52%). We examined abdominal CT at umbilicus level and fluorescence angiography in all patients. In abdominal CT, we calculated total abdominal fat area(TAFA), abdominal visceral fat asea(AVFA) and abdominal subcutaneous fat area(ASFA) and their ratios. In fluorescence angiography, we calculated that artery-vein ratio(AV ratio), artery-vein cross number(AV cross No) and antecubital-retinal circulation time. Results: 1) Abdominal CT A. AVFA/TAFA(㎡) ; Control group : CAD group = 53.9±8.3 : 56.1±8.5 (p〉0.05) B. AVFA/ASFA(㎡) ; Control group : CAD group = 0.90±0.30 : 0.82±0.26 (p〉0.05) 2) Fluorescence angiography A. AV ratio(%) ; Control group : CAD group = 72.1±4.9 : 62.5±6.1 (p〈0.05) B. AV cross No ; Control group : CAD group = 0.3±0.5 : 1.1±1.1 (p〈0.05) C. Antecubital - retinal circulation time(ms) Control group : CAD group = 15.3±1.8 : 17.8±4.0 (p<0.05) Conclusion : There was significant association between the FAG findings and CAG findings but there was no significant association between the abdominal fat distribution by abdominal CT and CAG findings.

β-Carotene과 알코올을 섭취한 쥐의 혈액 성분변화의 상관관계

고재웅,조만희,이상한,우기민,염윤기,김창세 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2

The study was carried out to investigate the effects of dietary carotenids and β-carotene on the hematological changes caused by alcohol administration into the rats. The results were analyzed using several statistical methods; SPSS computer program for measuring the mean values and standard deviations, one way ANOVA for the test of significance, Duncan method for post HOC multiple comparison, and Pearson method for measuring the correlation coefficient. The following are the conclusion from those statistical analysis. 1. ALB and TB were shown to have the most significant correlation among the blood compositions f개m the basic dietary groups. 2. BUN and CHO were shown to have the most positive correlation among those from the carrot-fed groups. 3. CA and AG were shown positively correlated, and CHO and IP negatively correlated, respectively among those from the cheese-fed groups. 4. AP was shown positively correlated among those from the alcohol-administrated groups. 5. CHO, CA and BUN were shown positively correlated, and CA was negatively correlated among those from the β-Carotene -fed groups. 6. TB and TP were not affected by the correlations between the blood composition from all the experimental groups.

석회화 치성 낭종 1례

이상학,염범우,이승훈,한승훈,김응식,김광일 한국의학사 1998 診斷과治療 Vol.18 No.10

공사관리시스템의 전산화에서의 기능분석 연구

김윤성,전상규,김한웅 안성산업대학교 1995 論文集 Vol.27 No.-

The objective of the present study is to carry out a survey on the present uses of computerized systems construction management in the construction industries and to present a direction toward development and establishment of the systems which are useful and workable for an effective management tool. Many firms depend upon the commercial package programs imported from overseas. However, uses are limited to NAS systems among the built in functions. Many of the program in use are limited in practical application for their function being a oriented toward general uses.

전력계통 송배전선로 2회선 1선지락사고 고장거리 검출 알고리즘

이한웅,최면송,이승재,강상희 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - This paper presents a fault location algorithm when there are parallel circuits in power system networks. In transmission networks, a fault location method using the distribution factor of fault currents is introduced and in distribution networks a method using direct 3-phase circuit analysis is developed, because the distribution networks are unbalanced. The effect of parallel circuits in fault location is studied in this paper. The effect is important for the range of protecting zones of distance relay in transmission networks and fault location in distribution networks. The result of developed fault location algorithm shows high accuracy in the simulation that using the EMTP.

다국소 망막전위도를 통한 특발성 망막전막 제거술 전, 후의 황반 기능 평가

최성욱,이상엽,김현웅,윤일한 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

Objectives: To assess macular function after vitrectomy and membrane removal in eyes with idiopathic epiretinal membrane by means of multifocal electroretinogram (mfERG). Methods: Visual acuity, macular thickness measured by optical coherence tomography (OCT), and mfERG recordings were achieved for 14 eyes of 14 patients with idiopathic epiretinal membrane. All exams were performed before epiretinal membrane surgery and 1, 3, and 6 months after surgery. The average retinal response density and implicit time of each local response were estimated as anatomic macular areas corresponding roughly to 5 rings. Preoperative and postoperative responses of visual acuity, macular thickness, and mfERG were compared. The correlations of the change of retinal response density, visual acuity, and macular thickness were analyzed. Results: There were no significant changes in amplitude and implicit time measured by mfERG before and after the surgery (p>O.05). There were no significant correlations between the changes of amplitude and implicit time and visual acuity and macular thickness. Conclusion: Changes in mfERG recordings were not useful for predicting clinical prognosis after epiretinal membrane surgery.