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내시경적 역행성 췌담관조영술중 췌선방 조영 후 발생한 중증 췌장염 1예
장세중,기승석,김훈일,신혜영,박장원,송은훈,태재웅 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.2
내시경적 역행성 담췌관조영술 후 발생한 급성췌장염의 발생인자로 여러 가지 인자들이 관여하지만 특히 담췌관조영술 시행 후 과도한 췌선방 조영화에 의한 중증의 췌장염 증례를 경험하였기에 보고하는 바이다 Endoscopic retrograde cholangiopancreatography (ERCP) has been considered as a valuable tool for the diagnosis and management of disease of the pancreas and biliary tree. Post-ERCP pancreatitis is the most frequent and clinically significant complication following ERCP. But a few complication associated with this procedure are unforeseeable. Specially, acinarization as a result of a careless cooperation between operator and assistant may be influenced in complications of ERCP. Severe post-ERCP pancreatitis is rare complication, and its prognosis will be poor. Therefore, careful process and good relationship between operator and assistant in ERCP may be prevented this complication, but is not clear. Neglect of acinarization may be resulted in more aggravation of pancreatitis. We have cared for one patient with severe post-ERCP pancreatitis with pseudocyst after water-soluble contrast media spreading into the acini (acinarization) via ERCP in resolving phase idiopathic pancreatitis.
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장세중,김승진 한국물리학회 2013 새물리 Vol.63 No.1
Using sine and square waves generated by function generators in the interface MBL-KNUE developed previously in our laboratory and transmitting the signals through a speaker as sound waves, we investigated the responses of various tubes, open, closed at both ends, open at one end, and of a string to frequencies that were automatically varied in equal intervals. The air column was made with an OHP film. For a string, sound waves were sent onto the sound hole of a guitar, and the electromotive forces induced by a magnet nearby were measured. The whole procedure took less than about 20minutes, with the experimental values mostly agreeing with the theoretical ones within about 1\%. A survey on the applicability of the developed experiments to high school classes showed affirmative responses. 본 연구실에서 개발된 MBL-KNUE 인터페이스에 내장된 발진기로부터 등간격으로 자동 증가하는 진동수의 사인파 또는 직사각형파를 발생시키고,이를 스피커를 통해 출력하여 현, 양쪽개관, 한쪽개관 및 양쪽폐관의음파 진동수 변화에 따른 반응(스펙트럼)을 조사하였다. 실험에 쓰이는기주관은 OHP 필름을 사용하여 제작하였다. 현의 경우는 기타의 공명통에음파를 입사시키고 자석을 이용, 유도기전력을 측정하는 과정을 통해실험하였다. 실험시간 대략 20 분내에서 대부분 이론값과 1\% 내외에서일치하는 공명진동수를 확인할 수 있었다. 고안된 실험의 현장 적용가능성 조사 결과가 긍정적이었다.
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장세중,정민영 한국물리학회 2010 새물리 Vol.60 No.4
We developed an inexpensive and easy-to-use instrument to measure the speed of sound by using the following Robotstudy kit components: ATmega8535 and two microphones. The advantages of this apparatus are readily available parts, case of easy assembling to make, simple programming for operation, and real-time display of results. This instrument measures the travel time of sound pulses between the two microphones. We measured the speed of sound waves in various media, such as gases, solids, and liquids, by employing this instrument. It’s applicability to the middle-school and the high-school curricula was investigated, and the results were affirmative. 본 연구에서는 ATmega8535 마이크로컨트롤러를 사용한 로봇스터디 키트와 마이크 두 개를 이용하여 저렴하고 조립하기 쉬운 음속측정 장치를 개발하였다. 음파가 두 마이크 사이를 진행하는 시간차를 측정하였으며 제작과 프로그래밍이 어렵지 않고, LCD로 결과를 즉시 볼 수 있어 실험 과정이 간단하다. 기체, 고체, 액체 매질에서의 음속을 측정하였고, 개발한 장치의 형장적용 가능성을 조사한 결과 긍정적이었다.
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장세중 한국물리학회 2009 새물리 Vol.59 No.1
Experiments with digital electronic circuits can be executed easily by improving MBL instruments to make 3 digital pulses that oscillate with the experimental conditions. Five basic experiments with electronic circuits were executed by 12 graduate students, and the graphic results of each experiment were displayed. The applicability to a physics class was investigated, and the results were good. 아날로그 전자회로가 가능한 기존의 MBL-KNUE 실험장치에 3개의 디지털 펄스가 출력되도록 개량하여 디지털 전자회로 실험이 가능하게 하였다. 기초적인 아날로그와 디지털 전자회로 실험 5종목을 조별로 하였고 학생들의 전자회로실험 적용상황을 조사하였다.
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장세중,김승홍 한국물리학회 2012 새물리 Vol.62 No.6
본 연구실에서 개발된 MBL-KNUE는 삼각파, 2차함수 파형, 3차함수 파형,4차함수 파형 등 여러 종류의 파를 발진시킬 수 있다. 그 MBL에 생성된여러 종류 파형의 자기장을 사용함으로, 유도기전력은 자기장과 음의미분관계임을 학생들이 즉각적으로 알 수 있도록 하였다. 그리고 측정된자기장을 미분하여 그린 가상 그래프를 유도기전력의 실험 그래프와정량적으로 비교하였으며, 그 파라미터 수치의 오차는 5 % 정도이었다. 4 종류의 파형을 정성적으로 실험하는 데는 10 분, 정량적으로 실험하는데에는 20 분 이내이다. 또한 솔레노이드의 자기장은 코일에 흐르는전류에 비례한다는 실험도 10 % 오차 내에서 동시에 가능하다. The MBL-KNUE developed in this laboratory has a function generating many kinds of waveforms: such as triangle waves and 2nd power, 3th power and 4th power function waves. Students can understand immediately that the induced emf (electromotive force) equals the negative of the time rate of change of the magnetic field which has many kinds of waveforms generated by the MBL. When the virtual graph, found by differentiating the measured magnetic field, was quantitatively compared with the experimental graph of the induced emf, the parameter produced about a 5% error. It takes within 10minutes to experiment 4 kinds of wave form qualitatively and within 20 minutes quantitatively. The experiment in which the magnetic field in a solenoid was proportional to the intensity of the current was executed simultaneously with a 10 % error.
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중학교 기술·가정 교과 재료의 이용 단원에서 프로젝트 학습이 학업성취도에 미치는 효과
장세중,이상혁 한국기술교육학회 2007 한국기술교육학회지 Vol.7 No.1
The purpose of this study was to verify effects of Project learning on student achievement in the lesson ofUtilization of Materialsof TechnologyHome Economics subject in middle schools.For the purpose, tow kinds of null hypotheses were formulated. The subject for it were 2 classes of the 2nd grade inBmiddle school in Gyeonggido and each class was assigned to the experimental group or control group. In order to investigate their academic achievement by their learning ability, divided higher level, middle level and lower level group. Academic achievement was divided cognitive domain, affective domain and psychomotor domain.For a four-weeks period, Project Learning class was provided to the group under experiment, while lecture-oriented class to the controlled group.SPSSWIN 10.0 was used for analysis and with significance level of 0.05, independent sample t-test was made. The results of this study were as follows;First, there application of project learning had effect on the academic achievement and showed significant difference.Secondly, middle level group and lower level group showed significant difference But higher level group showed significant difference. and affective domain and psychomotor domain of higher level group showed significant difference.
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