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.

다공질 실리콘층을 이용한 습도센서의 개발

이주혁,이성필,김성진 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

A humidity sensor using porous silicon layer as humidity-sensing material is developed. Its structure was designed monolithically to be compatible to the integrated circuit technology, and the porous silicon layer was formed on p-type wafers with the low resistivity of 0.01 Ωcm to be stable mechanically. Proto-type sensors were fabricated using processes such as localized formation of porous silicon, oxidation of porous silicon layer, and etching of oxidized porous silicon layer. The dependence of capacitance on relative humidity was measured at room temperature, where the capacitance increased from 0.3 nF to 1nF for the relative humidity of 55 to 90% over.

체급별 빠른발 돌려차기시 하지분절의 역학적 분석

조필환,정남주 한국운동역학회 2001 한국운동역학회지 Vol.10 No.2

태권도의 차기기술에는 여러 종류가 있지만 그 중에서 빠른발 돌려차기는 경기 시 상당히 빈번히 사용되고 있는 기술 중 하나로 보고되고 있다(김영대, 1997). 빠른발 돌려차기 기술은 상대의 중심을 흐트러 놓고 난 뒤에 다음 기술로 연결할 수 있으며, 또한 첫 공격에 득점을 낼 수 있는 장점을 지니고 있다. 태권도에 관련된 연구들은 경기 시 득점에 관련된 기술사용빈도와 차기기술 동작에 대한 역학적 이해를 위한 분석으로 분리되어 왔다. 특히, 역학적 연구는 대부분이 일반적인 운동학적 변인에 대한 기술(記述)로 한정되어 있어 체급간에 어떠한 차이가 있는지에 대한 결과는 다소 미진한 것으로 판단된다. 따라서 본 연구는 체급별 빠른 발 돌려차기 동작 시 하지분절의 특징을 기술하여 태권도 경기력 향상에 도움을 주고자 한다. 분석결과 다음과 같은 결론을 얻었다. 인체중심의 전진거리와 상승높이가 크다는 것은 인체의 이동속도를 크게할 수 있다는 점에서 상승높이가 적절히 분배되어야 한다. 동작수행 시 대퇴의 최대속도이후 하퇴의 최대속도, 그리고 발의 최대속도로 이어지는 분절의 속도전이가 바람직하게 이루어지고 있었으며 C체급에 비해 A와 B체급이 분절의 속도전이를 보다 효과적으로 수행하는 것으로 나타났다. 체급별로 고관절과 발목관절의 각도는 차기에 적합한 각도를 형성하며 임팩트 시점에 이르고 있으나 무릎관절의 경우 B와 C체급의 신전각도가 임팩트시점에서 작게 나타났다. 체급별 경기에서는 질량이 제한되기 때문에 같은 범위내에서는 속도를 향상시켜야 한다. There are probably kinds of kick technique in Taekwondo and among them it is reported that Parhunbal Dolyeochagi is one of technique frequently used in a great deal. Parhunbal Dolyeochagi has advantages; it is related to other techniques right after scatter the counterpart's C.O.G and player can get points at the first attack. The study of Taekwondo has classified for analysis to make out mechanics on technique using frequency and chagi motion is related to the point in matching. Especially, most of mechanical study is limited to the description of kinematical variables, so the result of the difference among weight is considered to be insufficient. Therefore, this study is to help improve Taekwondo matching power by stating the special feature of low leg segment when performing the Parhunbal Dolyeochagi in each level. The result of the analysis is as stated below. When performing Parhunbal Dolyeochagi, the moving distance and rising altitude should be divided properly, because it is judged to be able to scatter the opponent's ability to defend , for the greatness of the moving distance and rising altitude of the C.O G enables the human body to increase the moving speed. During the action, the velocity transfer of segment which is connected to the highest velocity of thigh, followed by the highest speed of shank, and the highest velocity of foot was performed desirably. Also, compared to weight C, weight A and B seemed to perform the velocity transfer of segment more efficiently. For each weight, the angle of hip joint and ankle joint forms the right angle for kicking, and reaches the impact point. But for the angle of knee joint, the extension angle of weight B and C appeared to be small at the impact point. During at weight matches, the mass is limited, so it is judged that the improvement of the velocity under the same situation is required.

불안정 대퇴골 전자간 골절 치료에서MHS (Intramedullary Hip Screw)와 압박고 나사의 비교

정필현,황정수,강석,김종필,곽주영 대한고관절학회 2004 Hip and Pelvis Vol.16 No.1

마분말과 천마분말이 흰쥐의 간, 뇌 및 신장의 지질성분 변화에 미치는 영향

박필숙,성낙주,박미연 동아시아식생활학회 1999 동아시아식생활학회지 Vol.9 No.2

The present study tested to recommend optimum level of Gastrodia rhizoma and effect on the compositional changes of the lipids in Sprague Dawley rats which were fed control diet adding 5, 10, 15% Dioscorea batatas powder and 5, 10, 15% Gastrodia rbizoma powder for 3 weeks, respectively, The contents of moisture, ash, fat, protein and carbohydrate in dried Gastrodia rbizoma were 5.9, 2.7, 2.1, 0.9 and 88.4%(w/w) respectively. Concentrations of total cholesterol and free cholesterol in liver were the lowest in the 10% Gastrodia rbizoma group. Concentrations of triglyceride and phospholipid in liver were lower in the 10 and 15% Gastrodia rhizoma groups than in the other groups. Concentrations of total cholesterol, free cholesterol, triglyceride and phospholipid in brain were significantly lower in the group 6, 7 compared to the other groups. Concentrations of triglyceride and phospholipid in kidney were slightly lower in the Gastrodia rhizoma groups than those in the Dioscorea batatas groups.

비확공성 골수강내 금속정을 이용한 폐쇄성 경골 간부 골절의 치료

정필현,황정수,채동주,문상호 東國大學校 1998 東國論叢 Vol.37 No.-

Most of closed fractures of the tibial shaft can be treated successfully with medullary nails. Reamed intramedullary nailing technique has become a good alternative method in treating the close tibial fracture. Unreamed interlocking intramedullary nailing has been employed successfully in the treatment of open tibial fractures. This study was undertaken to evaluate the result of interlocking intramedullary nailing without reaming in the treatment of closed fractures of the tibial shaft. From 1995 through 1998, fifty four cases of the closed, displace tibial fractures were treated by an unreamed intramedullary nailing and the average follow-up period was 1 year and 5 months(ranged from 12 months to 27 months). The results were as follows : 1. Fifty four cases were treated with closed, unreamed nailing technique and the nail which has 1mm smaller diameter than isthmic width of unaffected tibia was choosen. 2. The average time to bony union was achieved at 17 weeks without abundant periosteal b callus formation. 3. Eight tibiae were required the additional procedure such as autogenous bone graft, skin graft or local skin flap. We also have observed the screw breakage of ten tibiae but there were no intraoperative jamming or incarceration and no significant complicaton such as bending or breakage of the nail, shortening or non-union of the fractures. In conclusion, unreamed technique is an attractive method to treat the close, displaced fractures of the tibial shaft. 경골 간부 골절의 치료에 있어서 견고한 내 고정으로 조기 관절운동 및 체중 부하를 통해 골절 유합 및 기능 회복을 도모할 수 있는 골수강내 금속정 고정술이 널리 사용되어지고 있다. 골수강내 금속정술의 장점은 술 후 조기 관절운동과 체중 부하가 가능하여 이환율(morbidity)을 감소시키며 불유합의 발생률이 낮아는 것이다. 경골 간부 골절의 치료에 있어서 비확공성 금속정 고정술은 주로 심한 연부 조직 손상을 동반한 골절 및 개방성 골절의 치료에 적용되어지고 있으며, 대부분의 폐쇄성 경골 간부 골절의 치료로는 골수강 확공 후 골수강을 충만시키는 금속정을 삽입하는 확공정 금속정 고정술이 시행되어지고 있는 경향이다. 저자들은 폐쇄성 경골 간부 골절에 대해서 비확공성 금속정 고정술의 유용성 여부를 알아보기 위해서 동국대학교 의과대학 정형외과학교실에서 치료했던 54례를 평균 1년 5개월 추시하여 골 유합 기간, 합병증의 발생에 대해서 분석하였다. 본 연구에서 비확공성 금속정 고정술시 골 유합 기간은 확공성 금속정 고정술시와 비교하여 유의한 차이가 없음을 알 수 있었으며, 확공을 하지 않음으로써 발생할 수 있는 jamming이나 가는 직경의 금속정을 선택함으로써 우려되는 금속정의 휨, 부러짐 등의 합병증은 발생하지 않았다. 결론적으로 폐쇄성 경골 간부 골절의 치료에 있어서도 비확공성 골수강내 금속정 고정술은 유용한 방법으로 사료된다.

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.

제어 시스템 설계를 위한 IEC 1131-3 기반의 제어 로직 생성기의 개발

정구,심주현,이제필,이철수 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

This paper describes the methodology of an IEC 1131-3-based control logic generator for the control system design and converting algorithm between programmable languages. The proposed control logic generator is generated based on the software model and common element with data type, variables, POUs(program organization unit) and execution control unit commonly used within programmable languages of IEC 1131-3 Standard. The generation method of object file was proposed on five programmable language based on IEC1131-3. The generation method of object file is represented as following; 1) the generation method using conversion algorithm from LD to IL with FBD(function block diagram), 2) the generation method using C code generation algorithm from SFC using the SFC execution sequence with FBD and ST(structured text). The proposed control logic generator was implemented by Visual C++ and MFC on MS-windows NT 4.0

천마분말이 고콜레스테롤혈증 흰쥐 혈청의 지질성분에 미치는 영향

박미연,성낙주,신정애,이수정,박필숙 동아시아식생활학회 1998 동아시아식생활학회지 Vol.8 No.1

This study was designed to investigate the optimum recommendation level on Gastrodia rhizoma and the effects on the improvement of the lipids in the dietary hypercholesterolemic rats. Experimental diets mixed with 5% Dioscorea batatas(Group 2), 10% Dioscorea batatas(Group 3), 15% Dioscorea batatas(Group 4), 5% Gastrodia rhizoma(Group 5), 10% Gastrodia rhizoma (Group 6) and 15% Gastrodia rhizoma(Group 7) were administered to the male rats of the Sprague Dawley for 3 weeks. Concentration of total cholesterol in serum was lower in the Gastrodia rhizoma groups than in the other groups, especially total cholesterol concentration of 10% Gastrodia rhizoma(Group 6) was the lowest in the Gastrodia rhizoma groups. Concentration of HDL-cholesterol in serum was higher in the 10% Gastrodia rhizoma and 15% Gastrodia rhizoma than in the other groups. Concentrations of cholesterylester, LDL, LDL-cholesterol in serum were the lowest in the 10% Gastrodia rhizoma. Concentration of glucose and activity of GPT in serum were the lowest in the 10% Gastrodia rhizoma group. The activity of GOT in serum was lower in the 10% Gastrodia rhizoma group and 15% Gastrodia rhizoma group than in the other groups. Therefore, we consider that there are effects on the improvement of the lipids in the Gastrodia rhizoma and the optimum recommendation quantity of Gastrodia rhizoma is 10% to quantity of food composition.

IEC 61131-3 표준을 따른 PC용 소프트웨어 PLC의 개발

이철수,정구,이제필,심주현 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.1

This paper describes a converting algorithm between programmable languages of a software PLC. It is based on IEC 61131-3 standard and PC. The proposed control logic is designed by the software model and common element with data type, variables, POUs(program organization unit) and execution control unit commonly used within programmable languages of IEC 61131-3 Standard. The generation method of object file is proposed on five programmable languaged based on IEC 61131-3. It is represented as follows; 1) the generation method using conversion algorithm for LD to IL with FBD(function block diagram), 2) the generation method using C code generation algorithm from SFC using the SFC execution sequence with FBD and ST(structured text). The proposed control logic generator was implemented by Visual C++ 6.0 and MFC an MS-windows NT 4.0.