반도체 메모리에 사용되는 전압발생기의 펌핑 커패시터 개선

김필중,구대성,윤중현,김종빈 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

In semiconductor memory, the kinds of voltage generator are high voltage generator, negative voltage generator, drain voltage generator and etc. The relevant circuits supported voltage generator, are clock generator, sense amplifier, voltage regulator and etc. The voltage generator consists of MOS diodes and MOS capacitors. To get the out voltage with sufficient charge, the MOS capacitors are big size. These MOS transistors can be adapted only on the EEPROM process. Thus, in this study, we designed stacked metal capacitor. This capacitor is small size bat can get capacitance. This capacitor is designed to comb type using metal-line and poly-line. The size of designed capacitor is 208×52 ㎛2 and the capacitance is about 4pF. The stacked metal capacitor can get much capacitance of 5~6 times than single plane capacitor. Also this capacitor will be easy adapted in sub-micro process technology of semiconductor memory. And this capacitor can be adapted on all memory process.

역행성 골수강내 금속정을 이용한 대퇴골 과상-과간 골절의 치료

정필현,황정수,강 석,김종필,전용진 대한골절학회 2004 대한골절학회지 Vol.17 No.2

防潮堤의 壓密沈下量 解析에 관한 考察

安鍾弼,朴吉鉉,金永先 조선대학교 국토개발연구소 1988 국토개발연구 Vol.8 No.1

In Seadyke design a surface stress Calculation using osterberg chart for few point has been generally used to settlement quantity Computation. This study is developed to the Computer Program of integral formula having a Zonal triangular load, A few Case studies are examinedand find out degree of error about the Cross section. This results can be use to the seadyke design.

탱자(Poncirus tripoliata RAF)잎으로부터 Mitochondrial DNA의 분리

박종필,전홍성,김연순,이숙영,김성준 조선대학교 부설 유전생물공학연구소 1992 유전생물공학연구지 Vol.2 No.-

Differaitial centrifugation, sucrose(30%, 60%) and percoll(13.5%, 21% and 45%) density gradient centrifugation were used to effectively isolate mitochondria and mitochondrial DNA (mt DNA) from the leaves of the genus Poncirus (Pondrus trifoliata RAF.) The results showed that percoll density gradient centrifugation provided a convinient and effective method for the preparation of clean mitochondria. The purity of prepared mt DNA was increased by the removal of the nuclear DNA by DNase treatment to the crude mitochondrial suspension mt DNA on the agarose gel was shown extra fluorescent background in case of isolation by differential centrifugation and more cleared band included slightly smeared patterns for sucrose density gradient, and highly paint band from percoll density gradient was appeared to the best results of the above three methods. In addition to chromosomal mt DNAs, two short mt plasmid-like elements were detected in the genus Poncirus. These elements consistently co-purified with the chromosomal mt DNAs and is widely distributed among natrual Poncirus trifoliata RAF. populations. But these elements required proteinase K treatment for mobility in agarose gels.

원위 대퇴골의 고립성 골연골종에서 발생한 속발성 연골 육종 1례 보고

정필현,황장수,강석,김용민,오형호,채동주,김종필 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

연골육종은 비교적 서서히 자라며 늦게 전이하는 악성 연골 종양으로 알려져 있다. 골 연골종에서 발생한 속발성 연골육종은 발생빈도는 드물며 타부위로의 전이가 적고 악성도가 낮은 경우가 많아 적합한 수술적 치료로서 좋은 예후를 보이는 것으로 보고되고 있다. 본 동국대학교 정형외과학 교실에서는 우측 대퇴골 원위부 골간단부에 생긴 고립성 골 연골종에서 이차적으로 발생한 연골육종을 치험한 바 문헌고찰과 함께 보고하는 바이다. A case of Secondary Chondrosarcoma Arising from Solitary Osteochondroma of the Distal Femur Department of Orthopaedic Surgery, College of Medicine, DongGuk University Phil Hyun Chung M.D., Jung Su Hwang M.D., Suk Kang M.D., Yang Mln Kim M.D., Hyung Ho Oh M.D., Dong Ju Chae M.D., Jong Pil Kim M.D. Chondrpsarcoma is a malignant cartilage-forming tumor that grows slowly and metastasis of this tumor occurs in late stage. Secondary chondrosarcomas arising from a solitary osteocartilaginous exostosis are rare and those have a better prognosis than other chondrosarcomas, and they rarely metastasize. We present our experience with a case of secondary chondrpsarcoma arising in solitary osteochondroma of distal metaphysis of right femur with clinical details.

동측 대퇴골 경부 및 간부 골절의 치료 : 15례 분석

정필현,강석,채동주,홍정룡,김종필 동국대학교 경주대학 1997 東國論集 Vol.16 No.1

동측 대퇴골 경부 및 간부골절은 드문 골절로서 초진시 경부골절을 간과하는 경우도 있고 치료에 있어서도 여러 가지 방법이 제시되어져 왔다. 저자들은 1989년 6월부터 1996년 5월까지 경험한 동측 대퇴골 경부 및 간부골절 환자 15례를 대상으로 다양한 방법으로 치험한 예를 분석하였다. 15례중 8례에서 경부골절과 간부골절을 동시에 고정하는 재건금속정으로 치료하였고 전례에서 골유합을 얻었으며 평균 골유합기간은 경부골절 14주, 간부골절 20.5주였다. Ipsilateral femoral neck and shaft fractures present diagnostic difficulties and complex choices as to treatment. We report the result of treating 15 such fractures. High-energy accidents accounted for most of these injuries. There were numerous associated injuries, many requiring operative procedures. Eight of Fifteen patients were treated with Reconstruction interlocking nails. All fractures united. There was no delay in diagnosis of femoral neck fractures, and all healed without avascular necrosis. The use of the reconstruction nail is technically demanding. We conclude that this device gives good results for these fractures.

순환운동이 중학생의 체력에 미치는 영향 : 순발력, 민첩성, 지구력을 중심으로 Basing upon the Power, Agility, Endurance

정필환,김종인 公州大學校 스포츠科學硏究所 1996 스포츠科學硏究所論文集 Vol.- No.10

This study tried to know the effect of Circuit Training to middle school students' physical Fitness improvement, focussing power, agility and endurance. I choose the 80 boys middle school students in the second grade as sample group. They were divided into 2 groups, the control group and the experimental group. At the begining of the class, I had the control group have a sterching, physical exercise and 4 times running 200m track and experimental group performed circuit training for 12 weeks. After that, I measured the records of each students, and compared records of experimental group to the records of control group to analysis the effect of 12 week's circuit training. As a result, I have a conclusion like these. The records of 100m sprinting and Long jump were not affected by circuit training, but the records oft 800m running was affected by circuit training. In conclusion, we must develop the new, interesting programs to improve the physical fitness of middle school students.

엔진 냉각계의 방열량 해석에 관한 연구(Ⅰ)

원종필,방청세,마상용,박경석 慶熙大學校 1997 論文集 Vol.26 No.-

The higher output levels attained by automotive engines recently been accompanied by an increase in the amount of heat released by the engine. This higher heat release level has caused the thermal load in the engine compartment to rise. As a result, greater emphasis has been placed on thermal analysis of heat radiation from the radiator and of heat release from the engine. Heat release the coolant from the engine is released with heat transfer. It is. thus, the essential element to analysis of heat transfer process in cooling system for an automotive engine. However, most of the research about heat release to the coolant is performed from the standpoint combustion, so this research is done from the standpoint of heat transfer to the cooling system including the engine coolant. This study is performed on the analysis of heat release chracteristics in cooling system for an automotive engine according to the operating and cooling conditions. The results are summarized as follows: 1. The heat release is increased according as coolant temperature is decreased and coolant flowrate is increased. 2. The heat release is increased and heat release per power is decreased according as engine is increased with same engine speed. 3. The heat release is increased by increasing fuel comsumption according as engine speed increased.

滿洲朝鮮人移民の獨立運動 : 1910~1931年を中心として

홍종필 명지대학교 인문과학연구소 1998 인문과학연구논총 Vol.18 No.-

韓國의 地震 特性과 液狀化判定에 關한 考察

安鍾弼,沈泰燮,朴昌熙 조선대학교 국토개발연구소 1987 국토개발연구 Vol.7 No.1

In thesis, I research and analyze an earthquake phenomenon in the Korean Peninsula on the basic of historical records and observational data, and define its characteristics. Researching a liquefactive judgements method in the united states of American, Japan and China, I compare it with that method in Korea. Considering the enlargement tendency of the building and earthquake activity in the Korean Peninsula, when we design the general structure in our country we have to review an earthquake-proof in building. It is very fortunate that the soil liquefaction judgement criteria was legisterved recently. Considering the characteristics of earthquake in Korea, the judgement criteria of soil liquefaction have to be different from that of in Japan or the United States of America. So I presented here an amended equation that is following. τ_d/σ_υ^1=0.33σ_υ/σ_υ^1ㆍrd The constant 0.33 in the above relation, which reflects the earthquake characteristics of the Korean Peninsula to some degree, appears resonable compared to those of other areas of the world.