消積白朮散의 癌 轉移 抑制와 T 및 B 임파구의 증식에 미치는 영향

Jung, Chel-Jong,Son, Chang-Kyu,Cho, Chong-Kwan 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Chel-Jong Jung, Chang-Kyu Son, Chong-Kwan Cho. Department of Oriental Internal Medicine, Oriental Medical Hospital, Taejon University, Taejon, Korea. Studies on the effects of sojekbaekchoolsan on immune response & metstasis of B16-Fo melanoma cells. Proceedings of International Symposium on East-West Medicine, Seoul. 117-127, 1999.-This study was carried out to investigate the effect of Sojeokbaekchoolsan on immune response and metastasis of B16-Fo melanoma cells. The result were summarized as follows:1. Metastasisi of B16-Fo melanoma cell in C57BL/6 mice were decreased in the Sojeokbaekchoolsan treated group as compared with the control group. 2 Blastic response of lymphocyte to Con A were increased in the Sojeokbaekchoolsan teated group as compared with the control group. 3. Blastic response of lymphocyte to LPS were increased in the Sojeokbaekchoolsan treated group as compared with the control group. 4 Blastic response of lymphocyte to PWM were increased in the Sojeokbaekchoolasn treated group as compared with the control groupl From the above results, It is suggested that Sojeokbaekchoolsan enhanced as well cellula-mediated and humoral immune response as sojeokbaekchoolsan supressed the metastasis of tumor cells as compared with the control group.

Lyapunov 안정도 이론을 이용한 가변구조 모델 추종제어기 설계

안수관,박세승,박종국 慶熙大學校 材料科學技術硏究所 1989 材料科學技術硏究論集 Vol.2 No.-

The reference model is a simple double integrator, and the acceleration input for robot manipulator consist of a proportional and derivative controller for trajectory tracking purposes. The control algorithm is made by Lyapunov stability theory instead of S.S˙ < 0, as is usual in the current VSS controller. The simulation was performed to evaluate the performance of the proposed the VSMFC.

1994년도 法醫剖檢 통계분석

서재관,김종열 大韓法醫學會 1995 대한법의학회지 Vol.19 No.2

This is a statistical observation by authors based on the data of so called unusual death brought to this institute for medicolegal autopsy by all of law enforcement agencies in Korea in the year of 1994. This report aims to reveal the facts on various causes of unusual death in Korea. The following are the summary of results, 1. The total numbers of autopsy made for the unusual deaths were 2,123 cases, of these 1,576 cases were males and 547 cases were females. 2. Violent deaths were 1,380 cases (65.0%), natural deaths were 657 cases (30.9%), and unknown cases were 86(4.1%). 3. For deaths due to injuries, blunt object injuries were the leading ahead. 4. Asphyxial deaths were 340 cases, 16.0 percents of the total and drowning were 139 cases showing the biggest number among the asphyxial deaths. 5. Deaths from abnormal temperature and electricity were death due to fire, burning, hypothermia, heatstroke and electrocution. 6. There were 5 cases for starvation 7. Infanticides were 8 cases, 0.4 percent of the total number. 8. For the death due to intoxication, 236 cases (11.1%) were recorded and the biggest number among these was CO intoxication. 9. For the natural death, 657 cases, 30.9 percents of the total were recorded and the death due to the disease of the cardiovascular system was taking the most of the total number with 323 cases. 10. Cause of death unknown due to negative autopsy and to the severe decomposition of the body were 86 cases, 4.1 percents of the total number

로보트 매니퓰레이터에 대한 강건한 적응제어기 설계

安秀寬,朴世勝,裵悛坰,朴鍾國 慶熙大學校 1989 論文集 Vol.18 No.-

In this paper a new adaptive control algorithm is derived, with the unknown manipulator and payload parameters being estimated online. In pratice, we may simplify the algorithm by not explicitly all unknown parameters. Futher, the controller must be robust to residual time - varying disturbance, such as stiction or torque ripple. Also, the reference model is a simple double integrator and the acceleration input for robot manipulator consists of a proportion and derivative controller for trajectory tracking purposes. The validity of this control is confirmed in simulation where two - link robot manipulator shows the robust performances in spite of the existing nonlinear interaction and unknown parameter changes.

釜山地域 經濟發展을 위한 地域企業人의 役割과 責任 : 企業家精神과 地域的 責任을 中心으로

오종석,황한식,김종관 부산대학교 1995 地域經濟硏究 Vol.- No.4

한국경제는 지금까지 국가 중심적 경제체제를 유지해 왔으나, 세계화, 지방화라는 시대적 변화에 직면하여 지역 분권적 경제체제를 확립하고, 이를 통해서 지역경쟁력을 강화함으로서 지역중심의 세계화를 추진해 나가지 않을 수 없게 되었다. 따라서 본 연구는 효과적인 지역경제발전을 모색해 나가기 위해서 부산지역을 연구대상으로 하여, 지역경제발전의 주체와 지역경제발전의 원동력을 조명하고, 지역경제발전을 위해서는 어떠한 환경이 조성되어야 하는 지를 문헌연구와 실증연구를 토대로 하여 고찰해 보고자 하였다. 그 결과, 다음과 같은 결론을 도출할 수 있었다. 첫째, 세계화, 지방화 시대의 지역경제 발전전략은 자립적·내발적 이어야 하며, 지역 스스로가 발전주체가 되어야 한다는 점이다. 특히 지역기업인은 지역에서 가장 중심적인 역할을 담담해야 하며, 지역기업 중심의 지역주체성 확립이 지역경제 발전의 기반이 되어야 한다는 것이다. 둘째, 지역경제 발전의 원동력은 지역기업인의 기업가정신과 지역적 책임이며, 이것을 통해 기업의 내생력을 강화시켜서 기업발전을 이룩하고, 지역경제의 발전을 실현해 나가야 한다는 점이다. 셋째, 지역경제의 발전을 위해서는 지역경제의 낙후원인을 분석, 진단하고 이를 통해서 외생적 환경조건을 정비함으로써 지역경제의 발전을 도모해 나가야 한다는 것이다.

Plerocercoid의 표피 및 그 관련조직의 구조에 관한 연구

金鍾煥,劉寬凞,金南萬 충남대학교 자연과학연구소 1984 忠南科學硏究誌 Vol.11 No.1

The tegument of the plerocercoid stage of Spirometra sp. from Natrix tigrina was examined by electron microscopy to determine whether the most anterior level was similar to the trunk portion of the integumental structure. Significant differences were observed in the shape and arrangement of microtriches, distribution of mitochondria and the different types of bodies in the tegument. A few and short microtriches were observed at the most anterior portion, while many microtriches with long and broad proximal portion were arranged densely in the trunk portion. Many mitochondria are distributed just beneath the microtricheal layer in the anterior portion, but they were observed on the basement layer in the trunk. In the tegument of the anterior portion the most cytoplasmic bodies were showed round and oval vesicular shape, while they were rod-shape in trunk portion. The basement layer of the trunk portion was thicker than that of the anterior portion and the location of muscular layers was replaced with circular and longitudinal muscle in the anterial and trunk portion.

pH 변화에 따른 클로라민 생성과 분해 특성

조관형,김평청,우달식,조영태 한국환경과학회 2002 한국환경과학회지 Vol.11 No.4

본 연구의 시료는 현재 서울특별시와 수도권 도시들에서 상수원수로 이용하고 있는 한강수를 대상으로 수행되었다. 배·급수계통의 2차 소독을 위한 클로라민소독의 특성에 관하여 고찰하였으며 그 결과는 다음과 같다. 1) 25 ℃, Cl_2 / NH_3-N비 1:1 ~ 14:1에서 pH6, 7, 8의 불연속점은 각각 Cl_2 / NH_3-N비 11:1, 9:1, 10:1이었다. pH6의 경우, Cl_2 / NH_3-N비가 9:1일 때 총 잔류염소량이 최대인 반면, pH7, 8의 경우 Cl_2 / NH_3-N비가 각각 6:1, 5:1일 때 최대가 되었다. 2) pH가 6, 7, 8로 증가함에 따라 모노클로라민이 최대로 생성되는 Cl_2 / NH_3-N비는 7:1에서 5:1로 이동하였으며, pH6 ~ 8 범위에서 pH가 증가함에 따라 모노클로라민의 생성량이 많았다. 3) 클로라민의 분해는 Cl_2 / NH_3-N비가 증가하고 pH가 낮을수록 증가하였다. 클로라민의 잔류성은 유리염소보다 월등히 좋았다. pH6에서 모노클로라민과 디클로라민이 생성된 이후, 접촉시간이 경과함에 따라 디클로라민의 분포비가 증가하였다. This study was conducted to investigate the characteristics of chloramination as a secondary disinfection in a drinking water distribution system. At the range from pH 6 to pH 8, monochloramine was predominant with a trace of dichloramine, and the free chlorine was detected after breakpoint. At 25℃, the breakpoints of pH 6, 7 and 8 appeared when the weight ratios of chlorine to ammonia nitrogen were 11:1, 9:1 and 10:1 respectively, and the peak points on the breakpoint curves at pH 6, 7 and 8 were in the Cl_2 / NH_3-N ratio of 9:1, 6:1 and 5:1 respectively. As pH increased from 6 to 8, maximum point of monochloramine on the breakpoint curve was moved from 7:1 to 5:1 in the weight ratio of chlorine to ammonia nitrogen. The maximum concentration of monochloramine was formed at the pH values of 7~8 and in the Cl_2 / NH_3-N ratio below 5:1. As the Cl_2 / NH_3-N ratio increased and the pH lowered, chloramines decay proceeded at an increased rate, and residual chloramines lasted longer than the residual free chlorine. The monochloramine and the dichloramine were formed at pH 6, and then the dichloramine continued increasing with contact lime.

대학생들의 Treadmill 보행시의 보행속도와 경사도에 따른 운동효율

이종관,정규철,홍연표 중앙대학교 의과대학 의과학연구소 1984 中央醫大誌 Vol.9 No.3

The mechanical efficiency of treadmill walking as a function of speed and grade of inclination was studied on 17 male and 6 female college students. The speed of motor-driven treadmill was adjusted to 2, 4, 6 and 8㎞/hr, and the grade of inclination 0-25% in male and 0-12.5% in female subjects. The mechanical efficiency of treadmill walking showed the highest value of 32.7±6.01% in male and 31.8±4.04% in female at a speed of 4㎞/hr. The efficiency was lower at a speed of 2,6 to 8㎞/hr. The mechanical efficiency of treadmill walking decreased linearly as a grade of inclination increased. Net mechanical efficiency due to grade was slightly increased as a grade of inclination was raised up to 10%, but, above that grade, it remained constant within 5% increase over the zero level walking at all speeds. General formulae for prediction of the mechanical efficiency during treadmill walking as a function of speed and grade were derived as follows: log M. E.(%)=0.258-0.029V+5.5×10^-3G+4.1×10^-3VG for male, and log M. E.(%)=0.142-0.011V+0.0357G+1.0×10^-4VG for female. No statistically significant difference between sexes was observed in the mechanical efficiency during treadmill walking at the same speed and same grade of inclination.

變壓器의 過渡勵磁電流 豫測法

朴鏞寬,左宗根 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.1

Accurate modeling of the transformer, including its saturation characteristics, is an important requirement for studying inrush current, overvoltage and ferroresonance conditions. This paper describes a straightforward method of determining the parameters for a standard T-type equivalent circuit representation of the transformer which can be used to predict the inrush current with good accuracy. The method relies on test measurements that can be readily performed on site: there is no need for design data on the transformer. A comparison of the computed waveforms with measured waveforms of the inrush currents of a distribution transformer is used to verify the accuracy of the method.

時間差分法에 의한 直流電磁石의 過渡磁場解析

左宗根,朴鏞寬 제주대학교 1990 논문집 Vol.31 No.-

The transient magnetic field of the DC electromagnet which is taken into acount eddy current is analyzed by the element method, For the analysis, the time derivative term in the system equation is discretized by each difference method and its analysis, the time derivative term i n the system equation is discretized by each difference method and its algorithm is derived. The computer program is developed by using the proposed algorithm. Then, the applicability of the algorithm is investigated in reference to the steady state solution because the analytic solution to the model is not known. It is found that; the coefficient matrix of time derivative terms needs to be partitioned to remove the singularity, and the Crank Nicolson method or backward Euler method is suitable among the known methods for the analysis of linear transient magnetic field.