최근 10년간 원광의대병원에서 시행한 소아 심장혈관 수술의 임상적 고찰

윤향석,정수미,최두영,오광수,오연균,김종덕,양현웅,이삼윤,김형곤,최종범,최순호,노병석 圓光大學校 醫科學硏究所 1995 圓光醫科學 Vol.11 No.2

We reviewed 10 years experiences of the clinical aspects and early postoperative results in 544 pediatric patients(age less than 16 years old). Among them. 529 cases had the congenital heart diseases, and 15 had the acquired diseases. Open heart surgery was performed in 413 patients. 115 cases were treated with non-open heart surgery. 16 with interventional catheterization. Annual increase of the cardiac patients was not significant in recent 10 years, except slight increase in 1994. The mean age of the study patients had been evidently changed to younger year by year. Total mortality rate of the open heart surgery was 6.4%. The cyanotic congenital heart diseases were high in early postoperative mortality by 25.7%, whereas 4% in acyanotic group. The age group less than one month was most highest in surgical mortality(66.7%). There were no deaths in patients with patent ductus arteriosus(103 cases), atrial septal defect(83 cases) or pulmonary stenosis(17 cases). Among 220 patients with ventricular septal defects(VSD). 10(4.5%) were died early postoperatively. In cyanotic group, the patients with pulmonary atresia with ventricular septal defects(PAVSD), transposition of the great arteries(TGA), interrupted aortic arch(IAA), complex cardiac anomalies with isomerism seemed to be most susceptible to an early death.

老齡者의 建康을 위한 生活習慣 實態調査

申東敏,長鳳愚,李揆文,金賢俊,金昌範,崔宗洙,崔鍾晥,李鍾珏,金圭碩,趙庚旭,金鍾聲,朴鍾振 平生體育硏究所 論文集 1987 平生體育硏究所 論文集 Vol.2 No.-

With a view to examining the habit and method in which old people maintain and improve their health, we consulted 551 men and 444 women who were over 65 years old, and concluded as follows: 1. Habit of eating It's been revealed that most of the old people keep a regular eating hour, control the quantity of meal or eat a little food, and prefer vegetables to meat. 2. Mental health Old people feel the necessity for mental health and most of them (about 80%) keep good mental health without becoming pessimistic. Their chief concenrs have turned out to be about their sons and daughters and their own health and finance. 3. Managing Good Health It has been revelaed that old people do not possess any special kind of secret to keep good health but taking plenty of rest, regular meal, and proper exercise, and many of them (about 60%) have been shown to eat invigorant food that they can easily get around their living area. 4. Physical Functions It has been revealed that many old people are conscious of some symptoms about their parts of body and about to percent of them suffers from neuralgia. Some measures like medical aid especially for old people need to be taken as soon as possible. As we have found that the health-keeping method of old people consists plenty of rest, proper exercise, and appropriate nutrition, we can conclude that the recreatonal and culture facilities and programs for keeping old people in good health should be developed. It is also necessary to study food that contribute to their health and develop ways to get rid of the stresses to which they are exposed in their daily life. Presides, it is natural that government found an administrative department to deal with these matters effectively.

국내 대형 EPC업체의 산업설비 상세설계 수행능력평가 및 문제점 분석

최종수,고윤혁 동국대학교 산업기술연구원 2007 산업기술논문집 Vol.16 No.2

본 연구의 목적은 국내 대형 EPC업체의 상세설계 역량을 평가하고 상세설계 프로세스상의 문제점을 도출하는데 있다. 연구결과에 의하면 국내 대형 EPC 업체들의 상세설계능력은 선진국 대비 상당 수준에 이르러 타 부문에 비해 경쟁력이 높은 분야로 평가되었으나 프로세스상에서 비효율적인 요소가 다수 있는 것으로 나타나 이를 해결함으로써 효율성을 높일 수 있는 여지가 있는 것으로 평가되었다. 파악된 비효율적인 요소들은 국제건설시장에서 국내 업체들이 경쟁력을 확보하기 위해 반드시 해결해야 하는 문제이며 짧은 시간에 적은 투자로 효과를 기대할 수 있는 분야로 사료된다. 본 연구를 통해 도출된 결과는 향후 산업설비 설계분야의 발전자 엔지니어링 핵심기술 확보에 기초가 되는 자료로 활용될 수 있을 것이다.

분만시 발생한 쇄골골절

최경수,정의섭,지성구,이종봉 예수병원 1997 예수병원학술지 Vol.18 No.-

제1요수 불완전 하반신 마비 환자에서의 기능적 전기자극에 의한 훈련 증례보고

최현주,이수영,김종문,강선화,정순열,강곤,정진상 건국대학교 의과학연구소 1996 건국의과학학술지 Vol.5 No.-

Functional electrical stimulation(FES) is known to increase muscle bulk and strength and prevent muscle atrophy in complete paraplegic patients. And other benefits include peripheral adaptations which improve muscle endurance, girth, and appearance, as well as central circulatory adaptation which enhances aerobic(cardiopulmonary) capacity. Good candidates for FES include spinal cord injured patients who have clinically complete upper motor neuron lesion between T4-T12. But we experienced incomplete L1 paraplegic patient who has improved maximal knee extension power, endurance, circumference and cross-sectional area of the thigh and the shank after FES-induced exercise for 44 weeks. So we recommend more trial of the FES-induced exercise to not only complete but also incomplete lumbar paraplegic patients.

합천호 수질 및 영양단계에 대한 평가

최형섭,조인철,변종환,문병현,허종수 한국환경농학회 2003 한국환경농학회지 Vol.22 No.1

호수 유입 하천인 황강의 1996~2001년 년도별 평균 수질은 COD 3.1~4,2 mg/L, T-N 2.460~3.550 mg/L, T-P 0.111~0.201 mg/L이였다. 호수내의 평균 수질은 COD가 1996년 1.9 mg/L에서 2001년 2.7 mg/L로 매년 조금씩 종가하는 것으로 나타났다. 호수내의 1996~2001년 년도별 평균 T-N 농도는 1.393~l.792 mg/L 이었으며, T-P농도는 0.018~0.023 mg/L 이였다. 식물성 플랑크톤의 발생 정도를 나타내는 Chl-α와 T-N, T-P와의 상관계수는 각각 0,382, 0.372였으며, 또한 수온과 강우량에 대한 상관계수는 각각 0.589, 0,526이였다. 따라서 합천댐의 경우 식물성 플랑크톤의 발생이 T-N, T-P보다 수온 및 강수량과 더 밀접한 관계가 있는 것으로 나타났다. 그리고 호수의 영양단계는 중영양~부영양 단계에 있는 것으로 평가되었다. The yearly average water qualifies of the Whang river, which flows into the Hapcheon lake, were COD 3.1~4.2 mg/L, T-N 2.460~3.550 mg/L, and T-P 0.111~0.201 mg/L during 1996~2001. The yearly average COD concentration of Hapcheon lake was increased from 1.9 mg/L (in 1996) to 2.7 mg/L (in 2000). However, T-N and T-P concentration of Hapcheon lake did not show increasing trend over the 6 year period. During 1996~2001, the yearly average concentrations of T-N, T-P were 1.383?1.792 mg/L, 0.018~0.023 mg/L, respectively. The correlation coefficients between chlorophyll α and T-N, T-P, rainfall intensity, water temperature were 0.382, 0372, 0.589, and 0.526, respectively. Therefore, the rainfall and water temperature appeared to play an important role for the variations of chlorophyll α concentration in the Hapcheon lake. Trophic state of the Hapcheon lake were evaluated to be in the range of mesotrophic to eutrophic.

五加皮의 效能에 대한 硏究

최민호,이계복,조규원,박진영,김경수,송정석,한종현 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

The purpose of this study is to measure the changes of regional cerebral blood flow (rCBF) and blood pressure (BP) of Cortex Acanthopanacis in rats, and to determine the effect of Cortex Acanthopanacis on phenylephrine (PE) induced contraction of isolated rat thoracic aorts. The measurement was continually monitored by laser-doppler flowmeter (Transonic Instrument, USA) and pressure transducer (Grass, USA) in anesthetized adult Sprague-Dawley rats through the data acquisition system composed of MacLab and Macintosh computer. Contractile force was measured with force displacement transducer under 1.5 g loading tension. The result of this experiment was as following; 1. Cortex Acanthopanacis did not effect the changes of rCBF and blood pressure significantly. 2. Contractions evoked by phenylephrine were decreased significantly by Cortex Acanthopanacis 3. L-NNA, ODQ, atropine and indomethacin significantly altered the relaxation of Cortex Acanthopanacis. 4. Propranolol did not change the relaxation of Cortex Acanthopanacis. These results indicate that Cortex Acanthopanacis did not change the rCBF and BP, but Cortex Acanthopanacis can relax PE induced contraction of isolated rat thoracic aorta and that this increasing contraction related to endothelium and various mechanism.

일반화된 실시간 근사추론법을 이용한 퍼지제어

崔鍾洙,金聖中 全北大學校 1993 論文集 Vol.36 No.-

In recent years, fuzzy rule-based control systems have received more and more attention from both academic industrial researchers. Some researchers have developed approximate reasoning algorithms from the real-time control point of view. Among these algorithms, the one widely used in fuzzy control systems is the relational matrix model, which was first adopted by Mamdani and is based on Zadeh's compositional rule of inference. Taking account of the fuzzy nature of human decision making processes and real-time properties, this paper establishes a generalized approximate reasoning medel based on possibility theory rather than on relation matrix computation. The proposed algorithms are suitable for various definitions of linguistic connectives frequently used in fuzzy rule-based control systems. This paper also describes a fuzzy control application for dealing with the feasibility of the proposed method. Simulation results show that the process response can be controlled successfully by the proposed controller.

네트워크를 이용한 매니퓨레이터의 동적 원격 제어

崔京三,李鍾洙 弘益大學校 科學基術硏究所 1998 科學技術硏究論文集 Vol.9 No.2

In this paper, we propose a remote controller for robot manipulators using local area network(LAN) and internet. To do this, we develop a sever-client system as used in the network field. The client system is an any computer in a remote place for the user to log-in the server and manage the remote factory. The sever system is a computer which controls the manipultor and waits for an access from a client. The server system consists of several control algorithms which is needed to drive the manipulator and networking system to transfer images that show the states of work place, and to receive a job data to run the manipulator. The client system consists of a 3D(dimension) graphic user interface for the teaching and off-line tasks like simulations, and external hardware interface which makes iy easier for the user to teach it. Using this server-client system, the user who is in remote place can edit the work schedule of the manipulator, then run the machine after it is transferred and monitor the results of the task.

니켈기 초내열합금의 고온부식거동에 관한 연구

최승주,이재현,이찬규,김근수,이종훈 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

Hot corrosion behavior of the CMSX-2, CMSX-4, Rene 77, Rene 80 Ni-base superalloys was investigated at 900℃ by two different corrosion methods, immersing the samples in Na2SO4-NaCl mixture(immersion test)and coating the salt mixture on the surface of the samples(modified coating test). The effects of corrosion times and salt compositions from 0 to 100 percent in Na2SO4-NaCl mixtures were examined. Experimental results showed that the corrosion depths in the alloys increased with increasing time, and the depths of the modified coating test were shotter than those of the immersion test in the mixed salt. It was found that the depths of CMSX series alloys increasing NaCl contents in the mixtures up to 50% NaCl. Corrosion products of the alloys were composed of Cr, Al, Ti oxides. The oxide scale, such as Cr₂O₃, Al₂O₃, TiO₂, were shown to improve hot corrosion resistance in the fused Na₂SO₄-NaCl mixtures.