초고층 건축물 입면디자인을 위한 유리재료의 물리적 특성 비교분석

조종수(Cho, Jong-Soo),조헌(Jo, Hun) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.10

From late 1880s based on Chicago School Style, tall buildings have been planned and constructed in major cities by recognizing as one of the solutions to release required office spaces in limited and higher land value downtown area. Consequently, tall buildings have became a powerful expression of architecture in the modern civilization due to their huge mass and vertical spaces. This dramatic phenomenon has rapidly spread to all over the world which want to be modern city. Specially, the center of a typhoon is Asia zone as well as Korea, China and Dubai. Basically, the design of tall building needs a spacial approach to form, space, vertical movement, construction and etc comparing with low-rise buildings. Because tall buildings have a different characters for natural system such as strong wind and huge thermal effect. Hence, to achieve proper tall building facade with architectural aesthetics, the design should understand a physical phenomenon for a wind movement and a thermal appearance such as the gravity is a natural phenomenon. Therefor, the target of the study is to understand a physical phenomenon and application on tall building"s facade design. It is very important work to know how design are applied for tall building"s facade design by a wind and the sun. So, this study starts with a basic research of a general facade design topic with wind and the sun. And to get the technical data for relationship between wind force, thermal issue and glass performance which is one of the facade component part, this study will use a computer simulation method. It will give a chance to inform design methodology for tall building"s facade design before starting initial facade design. Also it will make a database to understand what facade design for wind and the sun.

전치부 개방교합 및 상악 횡적 결핍을 동반한 골격성 I급 부정교합 환자의 미니스크루 지지형 구개 급속 확장 장치 및 미니 임플랜트를 이용한 치험례

이시윤(Seeyoon Lee),조헌(Heon Jo),최성환(Sung-Hwan Choi) 대한치과교정학회 2023 대한치과교정학회 임상저널 Vol.13 No.2

Fentanyl과 Bupivacaine 혼합약제의 경막외 지속적 주입이 개흉술후 진통에 미치는 영향

신봉호,장성호,채병국,조헌,공명훈 대한마취과학회 1991 Korean Journal of Anesthesiology Vol.24 No.6

Post-thoracotomy pain is so severe that may lead to postoperative complications, such as sputum retention, atelectasis, pneumonia and respiratory failure. These complications are associated with shallow breathing and inability to cough due to pain. To reduce postoperative pulmonary complications and improve respiratory mechanics, effective pain relief is essential. Among the many methods, epidural administrations of narcotics or local anesthetics have been shown to provide profound relief of postoperative pain. Forty-five patients undergoing thoracotomy were randomized into three groups based on a postoperative pain regimen as indi-cated: Group I; intermittent intramusculal injections of nalbuphine 0.2mg/kg for pain control(n= 15) Group II; intermittent epidural injections of mixtures of 0.2% bupivacaine and fentanyl 3 ㎍ Group III: continuous epidural infusion of mixtures of 0.2% bupivacaine and fentanyl 3 ㎍/ml at a rate of 4-5 ml/hr with supplementation on pain complaint. We evaluated postoperative pain score at 30 minutes, 8 hours, 16 hours, 24 hours, 32 hours, 40 hours, and 48 hours after thoracotomy. And we observed the duration of analgesia and the incidence of systemic side effects of three methods. The results were as follows; 1) The pain score was significantly decreased in group III compared to group I and II$lt;0. 05). 2) The mean duration of analgesia was significantly longer in group III compared to group I and II(p$lt;0.05). 3) the number of case of systemie side effects in group I was one case of nausea and vomiting, in group II, two cases of mild hypotension, and one case of nausea and vomiting, pruritus, headache, and urinary retention each respectively and in group III, one case of ruinary retention.

중증도 기간의 수술중 흡입마취제의 대사에 관한 비교 연구

김재환,장성호,임혜자,채병국,조헌,김병용 대한마취과학회 1994 Korean Journal of Anesthesiology Vol.27 No.4

The halogenated anesthetics, halothane, enflurane and isoflurane undergo biotransformation in man. They produce inorganic fluoride ion as a metabolite, which is well known as the cause of methoxyflurane induced nephrotoxicity. This study was done to investigate the rapidity and extent of biotransformation of volatile anesthetics for 2 hours of operation. Thirty patients were randomly divided into halothane, enflurane and isoflurane group according to anesthetics. Blood and urine sampling was done before operation, post-induction 10 min, 20 min, 30 min, 1 hour, 1 hour 30 min and 2 hours for the measurement of inorganic fluoride ion. Aspartate aminotransferase, alanine aminotransferase, blood urea nitrogen and creatinine levels were measured before and 24 hours after operation. The results were as follows ; 1) The values of blood fluoride ion in halothane and isoflurane group were decreased with time during operation and there was no change in enflurane group. 2) The values of urine fluoride ion in three groups were increased with time during operation. The rate of increase was the greatest in enflurane group. 3) There were no changes in the value of AST, ALT, BUN and creatinine. The above results suggest that the biotransformation of volatile anesthetics to inorganic fluoride ion was the greatest in enflurane, but the level was insufficent to cause renal dysfunction during 3.18 hour operation.

안면의 화학적 박피술시 Midazolam과 Ketamine을 이용한 Deep Sedation 마취의 임상적 고찰

장성호,김난숙,임혜자,공명훈,조헌,안덕선 고려대학교 의과대학 1994 고려대 의대 잡지 Vol.31 No.2

Various kinds of chemical compounds are used for the practice of facial chemical peeing. Most of the patients who are going to take chemical peeling operation do not need anesthesia except light sedation. But in case of using 50% trichloroacetic acid for that procedure there may be some needs of anesthesia because of severe pain. Deep sedation with midazolam(0.1mg/kg) and ketamine(1mg/kg) was performed for the facial chemical peeling in 85 patients and its clinical effects with usabilities were evaluated. The results are as follows : 1. No one could recall about one's operation. 2. Dreams occurred in 18.8% of the cases, of which 3.5% were bad dreams. 3. On recovery 89,450 of the cases were peaceful and relaxed, only 3.5% of them were in bad mood. 4. The percentage of the cases who would recommend this anesthesia technique for facial chemical peeling was 87.1. 5. Most common complication of this anesthesia technique was hypertension (83.5%). Although the above anesthetic method is relatively safe and selected by most of the patients, the control of the high blood pressure is not so easy and sometimes there can be severe hypoxia, so meticulous control of high blood pressure and continuous monitoring of arterial oxygen saturation are needed.

임신 말기 심근경색과 미발견 갈색세포증을 동반한 산모의 마취 경험

장성호,임혜자,공명훈,조헌,김수원,김난숙 대한마취과학회 1994 Korean Journal of Anesthesiology Vol.27 No.8

A 36-year-old woman (para 1-0-2-1) was transferred to Korea University Hospital at 38 weeks gestation for dyspnea and chest pain. On admission, her blood pressure ranged from 130/ 70 to 230/130 mmHg, the heart rate was 144 beats/min and respiratory rate was 36/min. The ECG pattern, serum creatinine phosphokinase and lactic dehydrogenase levels were consistent with acute myocardial infarction. The baby was delivered by cesarean section under general anesthesia with nitroglycerin and propranolol support. After delivery, the patient was diagnosed as having pheochromocytoma by hormone study, abdominal magnetic resonance imaging, and computerized tomography scan. Removal of tumor was suceessfully done under combined general and epidural anesthesia after preoperative preparation with phenoxybenzamine and propranolol for two weeks. Postanesthetic recovery was uneventful.

기관내 튜브와 Laryngeal Mask 의 삽입시 혈역학적 변동에 대한 비교연구

이혜원,신정순,장성호,임혜자,채병국,조헌 대한마취과학회 1991 Korean Journal of Anesthesiology Vol.24 No.3

It is essential to keep sirway during, general anesthesia. Tracheal intubation is the most useful and safe method to keep airway. But there are hemodynar. ic changes in using laryngoscope and tracheal intubation. And also sore throat may by developed in postoperative period. In 1983, Brain introduced laryngeal mask as a new airway and thereafter its use is increasing. Laryngeal mask have many advantages of easy intubation, insertion without muscle relaxant, and decreasing damage of larynx and pharynx, and also useful in difficult intubation. We studied hemodynamic changes during tracheal intubation and laryngeal mask insertion, and examined postoperative sore throat in postoperative 24 hours. The results are as follows: 1) There were significant increase in systolic, diastolic, mean arterial pressure and heart rate in both groups, but degree and duration of increase was more in endotracheal intubation group. 2) There were more cases of sorethroat in control group than mask group, but no significance was noted between them.