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이재희,김정국,양희철,김준형,이제근 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.1
KA, NaA, CaA 및 NaX 제올라이트가 충전된 실험실 규모의 흡착층을 이용하여 SO_2 유입농도, 충전층 높이 및 공간속도를 변화시키면서 SO_2 흡착실험을 수행하였다. 평형흡착량과 파과시간 모두 제올라이트 세공크기에 따라 KA, NaA, CaA, NaX 순으로 증가하였다. NaX상에서 SO_2를 흡착시킬 경우 SO_2 유입농도 504ppm 이하에서 파과시간은 증가하나 역시 물질전달범위도 증가하여 물질전달 속도는 감소하였다. Wheeler 식으로부터 제올라이트상의 파과시간에 대한 평형흡착량, 공간속도 및 1/C_0의 관계를 확인한 결과, 504ppm 이상보다 504ppm 이하의 저농도에서 파과시간이 상대적으로 증가하였다. The experimental of SO_2 adsorption, with varying SO_2 concentration, packed-bed depth, and space velocity, was carried out using a lab-scale fixed bed with zeolites, such as KA, NaA, CaA and NaX. Both of an equilibrium adsorption capacity and a breakthrough time increased with zeolite pore size, in order of KA, NaA, CaA and NaX. Breakthrough time of NaX increased under SO_2 concentration of 504 ppm, but mass transfer rate decreased due to expansion of mass transfer zone. Breakthrough time is relatively increased in the low gas concentration(<504 ppm) more than high concentration(>504 ppm), which is proved by the effects of equilibrium adsorption capacity, space velocity and l/C_0 for the zeolite from the relationship of Wheeler equation.
「주체사상」의 이데올로기적 기능 : 단합 기능과 동원 기능을 중심으로
李峻炯 경성대학교 1983 부산수산대학 논문집 Vol.4 No.4
The analysis of the ideological functions of the "Idea of juche" is seen to be very significant becaus edefinitions of ideologies are dealt with as the central themes of recent political researches and ideologies play a crucial role in the analysis of politics. The aims of this study are: (1) to explore whether the "idea" functions mainly as pure ideology or practical ideology: (2) to investigate how the solidarity function is concretely manifested, and (3) to examine how the mobilization function is concretely manifested. To fulfill these purposes, we avail ourselves of an analytic frame of reference based on Frans Schurmann's pure and practical ideology and Anthoney F. C. Wallace's goal and transfer culture. In the analysis of the functions of the "idea", we chsre solidarity and mobilization alone among several functions of ideology. Four drives or movements, which have been imposed on the North korean inhabitants, are given for the concrete manifestations of the two functions of the "idea". The results of the study are as follous: The "idea of juche" prvned to be transfer culture rather than goal culture in that the North Korean theoreticians have asserted that "all the lines and policies of our party are from and are carried out by the idea of juche:. But they have sought to enhance the "idea" toward pure ideology. Though it is difficult to make explicit which function relate exactly to which component of the idea, the relations between them are to be said. "Juche in ideology" and "independence in politics" prove to be more concerned with solidarity function, while "self-sustenance in economy" and "selfdefence in national defence" have a lot to do with mobilization function. The North Korean Communists didn't build up their regime on their oven but by the help of Soviet Russia and China. It is natural that their regime should lack authority, which solidarity function of the "idea" legitimizes. In other words, the "idea" helps to support the North Korean elite and to justify the exercise of power. The solidarity function is concretely manifested in the use of myths, the rewriting of history and the search for a utopia, which serve to promote the ends of the North Korean communist system. Most Communist transfer-culture goals require sacrifices of the population; commonly such goals are unpopular or entail means that are not popularly supported. They are accordingly imposed by a "revolution from above," which is very like Amitai's "societal mobilization." This mobilization has brought about a considerable degree of indiffrence and inertia among the North Koreans. The North Korean authorities have consequently attempted to maximize the effects of mobilization policies through the "idea". They have taken advantage of "chulima" movement and four military lines for the concrete manifestations of mobilization. It is concluded that through the "idea" Kim Il-sung, leader of the North Korean regime, has intended to consolidate his monolithic power and to maintain the supreme position of the Korean Workers Party.
박혜연,김종훈,박경일,황철웅,김태년,남궁준,도준형,이원로,이성윤 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Brugada syndrome is characterized by right bundle branch block morphology and ST segment elevation in the right precordial leads and a propensity to develop ventricular arrhythmias. Mutations in a cardiac sodium channel gene have been linked to this syndrome, and the ionic mechanisms responsible for the electrocardiographic phenotype are temperature-dependent. This case report describes a patient in whom a typical Brugada ECG pattern developed during fever and returned normal ECG after fever was subsided.
김종훈,남궁준,박혜연,황철웅,박경일,도준형,이성윤,이원로 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
The transient left ventricular apical ballooning syndrome, also known as takotsubo cardiomyopathy is a recently described novel cardiac syndrome. This syndrome is characterized by transient asynergy of the ventricular apex or mid-ventricle in the absence of obstructive epicardial coronay artery disease. This report concerns two types of morphologic difference about left ventricular apex and mid-ventricle. In this case, we report two types of stress-induced cardiomyopathy with review of literatures.
누리호 탑재 위성들의 충돌위험의 예측 및 향후 상황의 대응을 위한 분석
최승환,유중현,김종원,김성애,신경우,김용일,이재진,최성환,송재욱,김해동,마미순,김덕수,Shawn Seunghwan Choi,Peter Joonghyung Ryu,John Kim,Lowell Kim,Chris Sheen,Yongil Kim,Jaejin Lee,Sunghwan Choi,Jae Wook Song,Hae-Dong Kim,Misoon Mah,Doug 한국우주과학회 2023 우주기술과 응용 Vol.3 No.2
Space is becoming more commercialized. Despite of its delayed start-up, space activities in Korea are attracting more nation-wide supports from both investors and government. May 25, 2023, KSLV II, also called Nuri, successfully transported, and inserted seven satellites to a sun-synchronous orbit of 550 km altitude. However, Starlink has over 4,000 satellites around this altitude for its commercial activities. Hence, it is necessary for us to constantly monitor the collision risks of these satellites against resident space objects including Starlink. Here we report a quantitative research output regarding the conjunctions, particularly between the Nuri satellites and Starlink. Our calculation shows that, on average, three times everyday, the Nuri satellites encounter Starlink within 1 km distance with the probability of collision higher than 1.0E-5. A comparative study with KOMPSAT-5, also called Arirang-5, shows that its distance of closest approach distribution significantly differs from those of Nuri satellites. We also report a quantitative analysis of collision-avoiding maneuver cost of Starlink satellites and a strategy for Korea, being a delayed starter, to speed up to position itself in the space leading countries. We used the AstroOne program for analyses and compared its output with that of Socrates Plus of Celestrak. The two line element data was used for computation.