2개의 Photo Detector를 활용한 새로운 OCDMA 방식

임유택,민성식,원용협,김봉규,김병휘 한국통신학회 2002 한국통신학회 기타 간행물 Vol.2002 No.10

家電製品의 安全使用

林裕澤 농촌진흥청 1994 농촌생활과학 Vol.15 No.3

완전좌각차단(Complete LBBB)환자의 균형마취

임유택,권혁권,정병연,김세강,정용일 대한마취과학회 1996 Korean Journal of Anesthesiology Vol.31 No.6

Local or general anesthesia is essential for safe operation. Patients in good preoperative condition are relatively to tolerable to the operation, but the patients in poor preoperative condition have the high mortality and morbidity during and after the operation. Therefore, we should choose the anesthetic agents and methods, which cause little effect to the patients life. Among the intraventricular blocks, bundle branch is the most common type, and left bundle branch block may progress to a more serious condition of complete heart block. Optimal anesthetic management of patients with cardiovascular disease requires a thorough knowledge of normal cardiac physiology, the circulatory effects of the various anesthetic agents, and the pathophysiology and treatment of these diseases. The authors successfully performed balanced anesthesia in operation of a 63 year old female patient who showed complete left bundle branch block pattern in a preoperative electrocardiographic tracing without any subjective symptoms.

갈색세포종 적출수술시의 Isoflurane 마취

임유택,권혁권,김세광,정용일,정병연 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.32 No.1

We have experienced an anesthetic management of a 34 year old female patient with pheochromocytoma of left adrenal gland. The anesthetic management of patients presents many difficult problems, such as hypertension, arrhythmia and hypotension. The patient had been treated with phenoxybenzamine for 2 weeks preoperatively. Following induction of anesthesia with intravenous fentanyl, thiopental sodium and vecuronium, endotracheal intubation was performed. Anesthesia was maintained with nitrous oxide, oxygen and isoflurane administration. Blood pressure and pulse were controlled well with nitroprusside and isoflurane. After removal of tumor, blood pressure was controlled by Hartman's solution, packed red cell and dopamine administration. The patient tolerated well despite the episodic hemodynamic changes. Importance of preoperative preparation, sufficient sedation, smooth induction, complete analgesia, good muscle relaxation and stable cardiovascular control has been discussed. (Korean J Anesthesiol 1997; 32: 122∼126)

ARCS 학습동기화 모형을 적용한 영어 학습 웹 코스웨어의 설계 및 구현

임유택,정재열 신라대학교 교육과학연구소 2001 교육과학연구 Vol.- No.6

In the information age, computer has taken roots as indispensable education material. Thanks to the development of the Web and Internet, a lot of web- coursewares for computer have developed and used in the learning areas. As most web-coursewares, however, neglect the mode and the form needed as education materials, they don't attract the learner's attention. In spite of the computer's wide effect, it is ironic that only very few students use computers as a tutor. so, this study is to develop web-based courseware for English learning and improve the motivational attributes, with a systematic approach called the ARCS model of Keller.

미추마취하의 수술시 Morphine과 혼합한 Mepivacaine, Bupivacaine의 투여에 따른 마취 발현시간 및 술후 제통효과의 비교

정용일,임유택,정병연,권혁권 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.36 No.2

Background : Caudal injection of local anesthetics with morphine is the most common anesthetic technique for perianal operation and postoperative analgesia. This study was purposed to compare the onset time of caudal analgesia, postoperative analgesic effect and side effects. Method : Sixty healthy patients scheduled for perianal operation were divided into 2 groups randomly. Group I was given 2 mg of morphine in 20 ml of 2% mepivacaine via sacral hiatus. Group II was also given 2 mg of morphine in 20 ml of 0.5% bupivacaine caudally. We measured the onset time of caudal block, time to the first request of analgesics, the number of analgesics within 24 hours and the incidence of postoperative side effects. Analgesic effect was evaluated by visual analogue scales (VAS) at 1, 2, 6, 12 and 24 hours postoperatively. Result : The onset time of caudal block for operation and the first request time of analgesic for postoperative pain was significantly shorter in group I than group II. The analgesic use in the first 24 hours was significantly more in group I than group II. The side effects were similar in both groups. Conclusion : We concluded that the combined use of morphine and bupivacaine provided better postoperative analgesia than the combined use of morphine and mepivacaine. (Korean J Anesthesiol 1999; 36: 263∼267)

ARCS 학습동기화 모형을 적용한 영어 학습 웹 코스웨어의 설계 및 구현

정재열,임유택 한국컴퓨터교육학회 2000 컴퓨터교육학회 논문지 Vol.3 No.2

As the world is rapidly changing into a knowledge-based information society, there is surprisingly increasing a great deal of knowledge. For this reason, various information systems have been constructed and operated to manage efficiently toward educational information resources. However, many different code systems are generally used for the lack of a standard management system. These different code systems have become significant factors hindering the efficiency of information co-ownership and practicability between each system. In this study, the author designed the Standard Data Code Management System and explored an efficient management program toward educational information resources.

흰쥐 척수 손상후 Parvalbumin과 Calbindin D-28K 함유신경세포에 관한 면역세포화학적 연구

김종중,정윤영,임유택,박상수,박영란,김현곤,문정석 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2

Background and Objectives: This study was done to compared the distribution of the two calcium-binding proteins immunoreactive neurons, parvalbumin immunoreactiv (PV-IR) and calbindin D-28K immunoreactive (CB-IR) neurons in the spinal cord after transection. Materials and Methods: Twenty rats were divided into 3 groups (control, complete spinal cord injury (SCI), and right and left spinal cord hemisection). SCI was produced by cutting the spinal cord use blades 11 with scalpel handles. Results: In this experiment, CB-IR neurons were mainly found in many pyramidal cells distributed in the brain stem and spinal cord of rats. PV-IR Neurons were demonstrated in all lamina of the gray matter of the spinal cord. These immunoreactive cells had the highest density in the layer I and II of dorsal horn and several nuclei of the ventral horn of the all the segments of the spinal cord. CB-IR neuropil labeling was strongly noted in all the segments of the spinal cord. In contrast PV-IR neurons were different in distribution, size and morphology in the spinal cord. The number of PV-IR neurons were greater than in the spinal cord compared with the CB-IR neurons. CB-IR and PV-IR somata were round, oval, spindle and polygonal in shape, and were unipolar, bipolar, multipolar and horizontal in types. The diameters of the somata of the PV-IR and CB-IR neurons were 40-50 ㎛, respectively. Also dendrites of PV-IR and CB-IR neurons were densely arrayed in network.

노인환자에서 Taylor`s Approach를 통한 척추마취

정용일,정병연,임유택,하동춘 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.5

The Taylor's approach is a special paramedian approach to enter the L5-S1 interspace. The L5-S1 interspace is the largest in vertebral column. This approach is particularly useful when the interspace has been narrowed by pathologic bone destruction such as rheumatoid arthritis or osteoarthritis. Surgery in geriatric patients is associated with a markedly higher incidence of perioperative complication or mortality rate. Optimal anesthetic management of geriatric patients depends on understanding of the normal anatomy and physiologic changes in response to drug in aging. We studied of 3-geriatric patients with Taylor's approach. These patients had problems with respiratory dysfunction and anatomic constraints, which make other approaches unfeasible. (Korean J Anesthesiol 1997; 33: 970∼973)

편도절제술을 받는 어린이에서 술전 Bupivacaine 침윤과 Fentanyl 투여가 술후 통증에 미치는 효과

정지영,정용일,정병연,권혁권,임유택,하동춘 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.33 No.6

Background : Early postoperative pain following tonsillectomy is a significant discomfort and lead to inappropriate coughing reflex and restlessness on children. We evaluated the effect of intravenous fentanyl and peritonsillar bupivacaine infiltration on postoperative pain in children. Methods : We studied the 45 children for tonsillectomy. Group I received intravenous fentanyl(1 ㎍/kg) before surgical incision. Group II received 0.5% bupivacaine(2-10 ml) with epinephrine(1:100,000) on the peritosillar area before peritonsillar incision. Group III received saline infiltration instead of bupivacaine. Results : Visual analogue scale(VAS) observed at recovery room, 1hr, 2hr, 4hr after tonsillectomy were significantly lower in group I and II than group III but VAS at 8hr were similar among 3 group. Time to first request of analgesics showed no statistical significance between fentanyl group and bupivacaine group but saline group showed statistical significance. Total required dosage of analgesics showed no statstical significance among the 3 group. Conclusions : Preincision intravenous fentanyl and bupivacaine infiltration are both effective on postoperative pain control after tonsillectomy in children. (Korean J Anesthesiol 1997; 33: 1148∼1153)