유방의 과립세포종양 1예: 증례보고

민인철, 유근수, 선우영, 윤효영, 송영진 충북대학교 의과대학 충북대학교 의학연구소 2013 忠北醫大學術誌 Vol.23 No.2

유방의 과립세포종양은 슈반세포에서 기원하는 아주 드문 질환이다. 대부분의 환자들은통증을동반 하 지 않는 경성의 유방 멍울을 주소로 내원하게 된다. 따라서 이학적 진찰상 유방암과의 감별이 필요하 다. 유방의 과립세포종양은 임상적으로 유방암과 매우 유사하지만, 98%에서 양성 소견을 보인다. 일 반적인 유방촬영술 및 유방초음파 상에서는 종양 특이적인 소견을 보이지 않으며, 오직 조직생검술을 통한 조직학적, 면연화학적 검사만이 병변을 확진 하는 방법이 된다. 51세 여자 환자가 유방에 만져 지는 멍울을 주소로 외래를 방문하였다. 이학적 검사 상, 좌측 중간외측 유방에 멍울이 만져졌으며, 대흉근 및 주변조직과 고착 되어있는 소견을 보였다. 유방단순촬영 상 좌외측 유방에 비대칭성이 보 였다. 유방 초음파상 1cm크기의 유방 뒤 지방층을 침범하는 종괴가 보였다. 중심 침 조직검사 상 유 방의 과립종양세포 소견을 보였으며, 조직 절제 생검으로 확진 하였다. 임상적으로 유방암과 많이 혼 돈되는 과립세포종양 1예를 보고하고자 한다.

하지방사통을 동반한 성인 협부결손성 요추전방전위증의 후방요추간유합술 및 추경나사고정술후 추적결과

최철,김근수,최하영,김철진,김형일,이정청 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.4

도덕과 교육과정 운영의 인본주의적 접근

李根鐵 仁川敎育大學校 1991 論文集 Vol.25 No.1

사용자 프로파일을 활용한 원격 비디오 브라우징 시스템

고경철,신성윤,전근환,이양원 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

In This paper, we want to provide a more efficient kind of searching Service using the user's weight value of the accessing rate and the connecting rate for the user's profile. It is significantly presented through the data structure by video data analysis and modeling. The Remote Video Play Browsing System can be used to browse the video data for each frame not only the scene searching browsing method but also the shot searching browsing method for the demanded data. Video Play System also can Provide the detailed and exact information searching method for a Remote Video Play Browsing System when searching for detailed frame's information and its text, information of moving picture.

상온 유동층에서 층내 수평전열관의 마모특성

한근희,김용철,류정인,선도원,민병무 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.2

대부분의 유동층 연소장치에서 충물질과 비산된 입자에 의한 충내 전열관과 water wall의 전열관 표면의 마모는 계속적으로 골칫거리가 되고 있다. 본 연구는 단면적이 0.15m×0.30m인 상온유동층장치에서 마모하기 쉬운 아크릴 관을 사용하여 유동층에 파묻힌 전열관에 대하여 유동조건과 전열관의 배열효과에 대한 실험적인 연구를 나타냈다. 유동층의 단면적은 0.15m×0.30m이고 높이는 1.0m이다. 층물질은 강모래 평균입도 0.73, 1.24mm의 두 가지와, 평균입도 0.9mm의 무연탄 희재를 사용하였다. 유동층 높이는 0.45m이었다. 마모실험은 조건마다 100시간동안 유동화속도 1.2-1.8m/s 까지 변화시켜 수행하였다. 실험결과 마모율은 유동화속도가 증가할수록 증가하였고, 공기분배기로부터 떨어진 거리가 증가할수록 증가하였다. 그리고 공기분배기로부터 높이 0.6m의 비산영역에 위치한 전열관에 심한 마모를 나타냈다. 전열관의 원주방향에 대한 마모경향은 다른 부분과 비교하여 시계방향으로 4시 방향에서 8시 방향까지 심한 마모가 나타났고, 특히 5시 방향과 7시 방향은 심한 마모를 보였다. Erosion of in-bed tubes and water wall heat transfer surfaces by bed materials and elutriated particles have persistently plagued most fluidized bed combustion (FBC) systems. This papere presents a systematic experimental study of the effects of tube arrangement and flow condition on embedded tube erosion by using erosion-prone acrylic cylinders in a 0.15m×0.30m bench-scale cold fluidized bed. The bed material was two different sizes of river sand and anthracite ash with the average diameter of 0.73, 1.24, 0.90㎜, respectively. The static bed height was 0.45m. Erosion test was performed with the variation of fluidization velocity of 1.2 to 1.8m/s for 100 hours per set. The result shows that the erosion rate increased with fluidizing velocity, with distance from the distributor. The erosion was severe at the tube located in the splash zone of 60㎝ above the distributor. The trend with radial direction shows severe erosion at the 4-8 o'clock clockwise compare to other area, especially 5 and 7 o'clock clockwise.

유기금속화�물의 합성과 그의 반응에 관한 연구

沈相喆,許根泰 경북대학교 교육대학원 1982 논문집 Vol.14 No.-

The reaction of 2,5-hexanedione or succinaldehyde to be hydrolyzed 2,5-dimethoxytetrahydrofuran by acid with a variety of aryl-and alkylamines using tetracarbonylhydridoferrate as a highly selective reducing agent at room temperature or 60℃ under an atmosphere of carbon monoxide gave the corresponding N-substituted 2,5-dimethylpyrrolidines or N-substituted pyrrolidines in good to excellent yields. The reduction of synthesized 5-nitro-2-hexanone with benzaldehyde in this reagent was also obtained N-benzyl-2,5-dimethyl pyrrolidine in good yield. And aniline reacts with propanal having two α-hydrogens in the presence of a catalytic amount of a rhodium complex in neutral medium at 180℃ to give quinoline and tetrahydroquinoline derivatives in moderate yield. The mechanism of these reactions was investigated.

HCBKA를 이용한 Interval Type-2 퍼지 논리시스템 기반 예측 시스템 설계

방영근,이철희 江原大學校 産業技術硏究所 2010 産業技術硏究 Vol.30 No.A

To improve the performance of the prediction system, the system should reflect well the uncertainty of nonlinear data. Thus, this paper presents multiple prediction systems based on Type-2 fuzzy sets. To construct each prediction system, an Interval Type-2 TSK Fuzzy Logic System and difference data were used, because, in general, it has been known that the Type-2 Fuzzy Logic System can deal with the uncertainty of nonlinear data better than the Type-1 Fuzzy Logic System, and the difference data can provide more steady information than that of original data. Also, to improve each rule base of the fuzzy prediction systems, the HCBKA (Hierarchical Correlation Based K-means clustering Algorithm) was applied because it can consider correlationship and statistical characteristics between data at a time. Subsequently, to alleviate complexity of the proposed prediction system, a system selection method was used. Finally, this paper analyzed and compared the performances between the Type-1 prediction system and the Interval Type-2 prediction system using simulations of three typical time series examples.

전동공구 내구성 평가 실험장치 개발

박근석,변영철,강이석,강배희,이동욱,차원준 忠南大學校 産業技術硏究所 1997 산업기술연구논문집 Vol.12 No.2

For the endurance test, it is necessary to test the portable electric tools under the same condition as the actual operation condition. It is also essential that the test equipment is convenient to fix the tool. Those are necessary to control the loaded torque and to acquire and analyze the test data with a computer. In this study, we have developed an endurance test equipment for portable electric tools, where a hydraulic control system with a proportional relief valve was applied to control the load for the test. The developed test equipment used an industrial hydraulic pump as a load supplier to ensure a firm endurance of the test equipment itself. The data acquisition system has been automated by composing with a personal computer and RS-232C communication nets. This test equipment reduced the manhour for the test and also improved the reliability of the tested data which were measured and graphed.

운동 중 지방 대사에 대한 고찰

이근일,백병주,김의영,김도준,조용철,정훈,조재혁 龍仁大學校 體育科學硏究所 2002 體育科學硏究論叢 Vol.12 No.1

Glucose-fatty acid cycle is very important because it explains that fatty acid influences glucose level. Glucose-fatty acid cycle is the key factor to understand how endurance training which aids fat oxidation and carbohydrate stored in skeletal muscle influence mitochondria level. However, it is not certain whether glucose-fatty acid cycle influences exercising skeletal muscle of human being. As an energy resource, training increases use of fatty acid, endurance ability, and oxidation of triglyceride. During high level training, catecholamine secretions and restraint of fatty acid use caused by insulin increases dramatically, this results in reduction of free fat acids and reunification of free fat acids into triglyceride. Training restrains insulin activity and reduces plasma acid density, however, elite athletes have high triglyceride-fatty acid cycle. Although enzyme's activities and mitochondira's density increase after training, it's not certain that enzyme's activities is major factor in restraint of fatty acid oxidation in exercising muscle cells. Stores of fat leads to increases of fat oxidation, performance and reduces use of carbohydrate, however, there is no absolute evidence to support these results.

원발성 조기 위 소세포암

송근영,강길,박정희,김경종,민영돈,박치영,임성철 朝鮮大學校 附設 醫學硏究所 2002 The Medical Journal of Chosun University Vol.27 No.2

Gastric small cell carcinoma(SCC) is defined as poorly-differentiated neuroendocrine tumor of the stomach, and their morphologic and biologic features arc similar to those of the lung. It is known that this tumor has poor prognosis even in early pathologic stage, It acounts for only 3% of all gastrointestinal SCC. that has been reported only 33 cases outside and 6 cases inside of the comitiy. Most of these reports are related to advanced gastric SCC. as pathologic stage IIIb or IV. This report describes a case of early gastric SCC. pathologic stage Ib.