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정문혁 ( Moon Hyuk Chung ) 민족음악학회 2012 음악과 민족 Vol.44 No.-
This paper proposes a formal notational system of Medieval proportional relations, which adapts Apel`s system, Cohn`s ski-hill graph, and Chung`s semimeter notation. The notational system makes it easier to investigate the structure of proportional music independently of differing notational systems in the Medieval period, since the system removes context dependency. The system`s expressive power is demonstrated by representing Cordier`s and Dufay`s proportional relations as well as various mensural systems.
Methotrexate가 Mouse 간세포의 미세구조에 미치는 영향
정호삼,장혁순,이규식 한양대학교 의과대학 1987 한양의대 학술지 Vol.7 No.2
Methotrexate (MTX), folic acid analog, has been widely used in the therapy of psoriasis and also used in the chorionic adenoma and acute lymphatic leukemia. Methotrexate inhibits not only DNA synthesis but also RNA and protein synthesis. It has been reported that during the therapy, its cytotoxicity leads to necrosis of the epithelium of the renal tubules, hair loss and hepatic fibrosis. So the author undertook the present study to pursue the effect of methotrexate on the cytoplasmic organelles of hepatic cells. Albino mice, ICR strains, weighing 20gm were used experimental animals. The experimental animals were killed at 24, 48, 72 and 96 hours after administrations of 15 mg/kg of MTX. The specimens obtained from liver were prefixed in Millonig's solution and post-fixed in the 1% osmic acid. After specimens were dehydrated and embedded in the Epon 812, ultrathin sections were made and double stained with uranyl acetate and lead citrate. And these preparations were observed with the electron microscope. The results were as follows. 1. The majority of mitochondria was hypertrophied and some mitochondria were irregular shaped, its double membrane and crests disappeared in the mouse liver of the 24 hours-MTX treated group. 2. Golgi complexes were atrophied in the 48 hours-MTX treated group and cisternae of the Golgi apparatus were hypertrophied and vesicular formation was observed in the 72 hours-MTX treated group. 3. The cisternae of the rough endoplsmic reticulum wer dilated and sacculated, but the detachment of membrane bound ribosomes was observed. 4. Lysosomes and autophagic vacuoles were increased in number with time. Consequently, it is suggested that MTX would induced the damge of the organelles of the hepatic parenchymal cells in mice.
고추 세척기 개발에 관한 연구 : 초음파와 입형회전솔 방식 The Method Using Ultrasonics and Vertical Rotary Brush
한충수,박종수,금동혁 충북대학교 엽연초연구소 2001 煙草硏究 Vol.18 No.-
It is essential to wash foreign materials on the surface of red peppers, because the red peppers are concerned with food. The purpose of this study was to develop a red pepper washer using ultrasonics and vertical rotary brush. To increase the washing rate of the red peppers, the optimum washing condition of the red pepper washer using ultrasonics and vertical rotary brush were tested and analyzed. The results of this study were as follows; 1.There was no significant difference of the absorption rate of red pepper by the washing water temperature and washing method. 2.The reasonable speed of vertical rotary brush was around 100rpm. 3.The optimum washing period of red pepper was two minutes. 4.The water temperature did not affect washing effect. 5.The washer using ultrasonics and vertical rotary brush had the best washing effect.
MANET 라우팅 프로토콜 QoS 지원서비스의 성능평가에 관한 연구
鄭燦赫,金鉉郁,李光培,姜景仁,朴京培,劉忠烈,吳世德,裵振勝,趙榮泰 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-
In this paper, we evaluated two main QoS supporting routing protocol on wireless ad hoc network. At presence, wireless mobile communication focuses on how to efficiently support mobility of users more than QoS guarantee. However, in order to satisfy requirement of various applications which have been or will be served, QoS support service between source and destination becoming a very important issue. Of all routing protocols, DSR and AODV are very important routing protocol in MANET. So we simulated DSR and AODV QoS Routing Protocol Through simulation evaluation tool NS(Network Simulation) based on various environments.
朱奕中 東亞大學校 1967 東亞論叢 Vol.4 No.-
Mass production of prefabricated house is a solution to housing shortages and it's advantageis it cuts the cost down 30%. In order to investigate mass production of prefabricated houses, the following terms are discussed. First; Available statistics of housing situation and solution. Second; Analays's of relative official organization. Third; Comparison between conventional and investigated work methods. Fourth; The relative merits of prefabricated house.
이충휘,원종혁,옥준영 한국전문물리치료학회 2000 한국전문물리치료학회지 Vol.7 No.1
As in house care is develops and becomes part of the health care delivery system in Korea, it is necessary to quantify the viewpoints of in-patients and outpatients. The purposes of this study are to analyze the utilization of house visits by physical therapist and to investigate the viewpoint of in- and out-patients who had rehabilitation treatment at 3 general hospitals in Wonju, Korea. Two hundred and fifty-eight questionnaires were analyzed and the major findings are as follows: 1. Sixty-five point seven percentage of respondents showed their willingness to utilize house visits by physical therapist if an in house physical therapy program were established. 2. The questionnaire used a Likert-type scale to ask the respondents their viewpoints on in house physical therapy services. Most respondents showed a positive attitude, answering 'I agree'. The findings show that house visits by physical therapists should be introduced as an integral system for the delivery of health care in Korea.