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李勇宰 대한교통학회 1986 大韓交通學會誌 Vol.4 No.1
本 硏究는 「네트웍」 평형모형을 利用하여 一般费用凾數(Generalized Cost function)의 模型係數를 決定하는 하나의 方法을 提示한다. 이러한 技法은 同一模型을 實現하기 위해서는 必然的인 過程이다. 旣存의 大部分의 方法은 都市通行上 發生되는 通行者의 諸費用을 直接 觀測하고 蒐集하여 模型係數를 決定하였지만 本 硏究에서는 이미 活用可能한 起終點别 通行實態調查를 利用하여 通行費用을 내생적으로 決定하고 이에 따른 模型係數를 抽出한다. 따라서 本 硏究는 資料蒐集上에 惹起될 수 있는 諸般 問題點의 解決과 同一目的의 産出過程을 단순화시키고 内的一貫性을 追求하였다는 데에 意義가 있다. 硏究의 妥當性 檢討를 위해 「시카고」地域에 本 模型과 方法論을 適用하고 結果를 分析하였다.
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리용재,김일선,권병연 대한마취과학회 1983 Korean Journal of Anesthesiology Vol.16 No.3
Since Sicard, Cathlin and Tuffier performed the first sacral extradural anesthetic technique in 1901, surprisingly increased interest in this technique and basic investigation has been done concerning the anatomy, the physiology, and the fate of the local anesthetic in the body, after in jection in the epidural space. Recently, a decreasing interest in peridural anesthesia and nerve block thechniques have resulted from the availability of more efficacious and more safe volatile anesthetics. However in case of contraindication of both general and spinal anesthesia, this caudal anesthesia should be available and very usefull. Authers have undertaken to evaluate the circulatory effect of caudal anesthesia with the injection of lidocain into the epidural space through the sacral hiatus. Ten cases were selected and observed the change of the cardiovascular system before and after caudal anesthesia. The changes of the heart rate and systolic blood pressure between pre-and post anesthesia were insignificant statistically.
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下顎技 斜線骨折斷術이 顎關節에 미치는 影響에 關한 硏究
Yong Jae Lee(李用宰),Yeo Gab Kim(金麗甲) 대한구강악안면외과학회 1994 대한구강악안면외과학회지 Vol.20 No.4
The present study was designed to consider the changes of the temporomandibular joint after mandibular oblique osteotomy of the cats. In order to carry out this experiment, 17 cats weighing about 3.0kg were selected. One cat was preserved for control and 16 animals were divided into 8 groups, 1 day, 3 days, 5 days, 1 week, 2 weeks, 4 weeks, 6 weeks and 8 weeks. Under the general anesthesia with pentobarbital sodium, the experimental animals were performed oblique osteotomy on both mandibular ramus and wire fixation at mandibular border. The experimental animals were sacrificed consecutively on the 1st day, 3rd day, the 5th day, the 1st week, the 2nd week, the 4th week, the 6th week, the 8th week after surgery and the mandible were dissected out carefully to produce tissue specimen. The specimens were fixed with 10% formalin solution for 24 hours and rinsed with phosphate buffer solution. It was decalcified with 5% nitric acid for 15 days. Thereafter the specimens were dehydrated in alcohol series and embedded paraffin as usual manner. The embedded specimen were sectioned in 4-6μm, stained with hematoxylin-eosin and immunohistochemical stain, and observed through light microscope and polarizing microscope. The results were as follows: 1. The remarkable changes were appeard in the articular surfaces of temporal bone, the articular disc, the retrodiscal tissue, the fibrocartilage layer of condyle, the hypertrophic layer of condyle, the bone marrow of condyle at the 1st week after treatment. 2. Extreme hyperplasia of the fibrocartilage layer and thickening of prechondroblastic-chondroblastic layer in the 2 weeks after treatment. 3. In the 6th and 8th week post experimental animals, a pattern of response observed dense, regular arrangement in the fibrocartilage layer of the articular fossa and the mandibular condyle and in the articular disc. 4. The TGF gradually appeared in condylar bone marrow at 5 days after and increased at 2 weeks after and decreased at 8 weeks after.
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문준일,리용재 대한마취과학회 1978 Korean Journal of Anesthesiology Vol.11 No.2
Pedietric anesthetic expeeienees of 221 cases (under 2 yeers old) during two recent years were analyaed statistically aceording to age, sex, disease, riak, premedication, anestbetic method, hospyital days, repeat operation, complieations and mortality. All those infants were operated on uader general anesthesia The results were as follows; 1) Age & sex; 40 cases (18. 1%) were in under 3 months age group and 136 males (61. 5%) far exceeded 85 females (38. 5%). 2) Disease; Most common diseases in order were intussusaeption (24 cases), burn, ingoinaI hernia and cleft lip. 3) Risk; elective sargery were 181 (59. 3%) cases and emergency were 90 (40. 7%) cages. 4) Premedication; Maimly used premedicant was atropine only (78 cases). 5) Anesthetic methed; Most caees had endotracheal intubation with non rebreathing technique and halothane was mainly used (154 cases). 6) Hospital days; Mean hospital Stay was ll. 1 days. 7) Repeat operation; 26 cases (15. 6%) received repeated operationa of 2 times or more under the same diagnosis. 8 Complieations; 8) cases of pneumonia and 5 caws of wound infection were seen. 9) Mortality; 6 cases (2. 7%) died during postoperative period.
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김영익,이종현,리용재 대한마취과학회 1976 Korean Journal of Anesthesiology Vol.9 No.2
We recently had a patient(46 year-old) who was to undergo resection of a pheochromocytoma. The patient was treated with phenoxybenzamine for about 2 weeks preoperatively. Thiopental was used for induction followed by N2O-O2-halothane. An endotracheal semiclosed circle absorption technique with controlled ventillatian was employed. The course of anesthesia was rather stormy, reflectedby hypertension, arrhythmia and hypotension, but the patient talerated the anesthesia and surgery well with appropriate cardiovascular control using regitine, levophed, lidocaineand intravenous fluids. Importance of preoparative preparation, sufficient sedation, smooth induction, complete analgesia, good muscuar relaxation, adequate alveolar ventillation and proper cardiovascular control has been discussed. Recently some reviews of the literature on the anesthetic management of pheochromocytoma suggest that the selection of an anesthetic agent is not as important as the adequate management of the characteristics of these agents which affect the anesthetic procedures.
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