골절 및 탈구 없는 경추손상의 치료

성경훈,김상진,강재규,도종웅 대한신경외과학회 1989 Journal of Korean neurosurgical society Vol.18 No.7-12

The authors analized the 98 cases of cervical spine injuries without fracture or dislocation by hyperflexion/hyperextension of the neck. The peak incidence of the age was in the second to fourth decades(69.4%). There was a male preponderance with a sex ratio of 1.8:1. Sources of trauma were motor vehicle accident, object falling on and motorcycle accident in the order of frequency. The common mechanisms of injury were flexion-extension, extension and flexion injury in the order of frequency. There were 10 cases of cervical cord injury without fracture or dislocation and operative management was given in 6 cases of them. The most common preexisting desease was congenital cervical stenosis. Surgical modality such as laminectomy, laminoplasty and anterior decompressive procedure made them improved. The authors discuss the mechanism of injury and surgical management of the patients with cervical cord injury in the abscence of concomittent fracture or dislocation.

분자유전학적방법에 의해 확진된 Leber씨 유전성 시신경병증 2예

김응규,김종환,김상진,예종수,김성은,허경,원인건,황정민 대한신경과학회 1998 대한신경과학회지 Vol.16 No.1

트랙터의 로터리 驅動을 위한 PTO 시스템과 油壓驅動 시스템의 性能 試驗에 關한 硏究

成始興,崔圭洪 建國大學校 附設 自然科學硏究所 1993 建國自然科學硏究誌 Vol.4 No.-

엔진 회전속도 변동에 따른 PTO 회전수, PTO 토크, PTO 출력 및 연료 소비율을 측정하여 기계식과 유압식의 동력 특성을 비교, 분석한 결과는 다음과 같다. 1) 기계식, 유압식 모두 엔진의 회전 속도가 증가할수록 PTO 회전수는 증가하는 경향으로 나타났으며, 기계식이 변속단수 변동에 따른 엔진의 회전속도 폭이 안정적으로 나타난 대 반하여 유압식은 다소 크게 나타났다. 2) 엔진의 회전속도가 증가할수록 기계식, 유압식의 토크는 반비례 관계로 나타났다. 3) 최대 출력은 기계식의 경우 PTO 1, 2, 3단 순으로 나타난 데 비하여 유압식은 PTO 3, 2, 1단 순으로 나타나 PTO 변속 단수가 증가될수록 출력도 증가하는 것으로 나타났다. 4) 연료 소비율은 기계식, 유압식 모두 엔진의 회전수가 증가됨에 따라 연료 소비율은 어느 일정한 회전수 부근에서 최소가 된 후 다시 증가하는 경향으로 나타났다. 5) 유압구동 로터리의 효과적인 이용을 위해서는 유압펌프가 항상 고속으로 회전할 수 있도록 로터리는 어느 일정 회전속도를 유지시켜 작업하는 것이 필요할 것으로 판단되었다. 6) 유압식의 경우 유압펌프의 회전속도가 증가함에 따라 출력 및 연료 소비율이 향상되는 성으로 나타나 기계식에 비하여 효율이 크게 뒤떨어지지 않아 실용화의 가능성이 큰 것으로 생각되었다. The speed of revolution, the PTO torque, the PTO output power, and the specific fuel consumption caused by the variation in the revolution of an engine speed were measured. Therefore, the overall dynamic performance of the hydraulic PTO system was compared and analyzed with that of mechanical PTO system. The results are summarized as follows : 1) Both RPM of the hydraulic PTO and that of the mechanical one increased linearly as the engine speed increased. The engine speed from the variation of a mechanical type was saftly and small changed, but that of a hydraulic type was high changed. 2) Both torques of the hydraulic PTO system and those of the mechanical one decreased linearly as the engine speed increased. 3) The maximum power of the mechanical PTO system was the highest at the first gear of the mechanical one followed by the second one and the third one. However, that of the hydraulic PTO system was at the third gear followed by the second one and the first one. It means that the output power of a hydraulic PTO system increased as the variable PTO gear was increased. 4) After the specific fuel consumption decreased gradually to the specific point, which was required the lowest fuel consumption, then it increased as the engine speed increased. 5) To utilize effectively the hydraulic drive system, this system needs always to be kept revoluting constantly at an engine speed for hydraulic pump to rotate at the high speed. 6) The output power and the specific fuel consumption were improved by using the hydraulic system as the revolution of the engine speed was increased. The performance of hydraulic system was not significant of that of mechanical system. Therefore a hydraulic PTO system, which is convenient for a machine attached it to control automatically, would be utilized in future.

세 종류의 측두엽 간질증후군 ; 내측두엽, 전외측두엽 및 후외측두엽 간질의 임상양상 및 전기생리학적 특징

이상건,김주용,김병건,이광우,노재규,명호진 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

신사구체 경변증을 나타내는 FGS/NgaKist mice 간장에서 사이토크롬 P4501A1/2 단백질 발현

정규식,현병화,이철호,박상준,최양규,류시윤,이차수,민병길 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.2

폐석재와 석분을 사용한 식생블럭 제품 개발

성찬용,류능환,연규석,윤준노,김영익,남기성,노경희,박일순 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 연구는 폐석재와 석분을 사용하여 친환경적인 식생블럭 제품을 개발하기 위하여 폐석재의 입경과 석분의 첨가량을 각각 3종류씩 총 9종류의 식생블럭에 대하여 단위중량, 공극율, 투수량, 압축강도, 쪼갬인장강도, 휨강도, 내산성, 알카리농도에 대하여 구명하였다. 단위중량, 강도, 내산성은 골재의 입경이 작을수록 석분의 혼입량이 많을수록 크게 나타났으며, 공극율과 투수량은 작게 나타났다. 강도는 중성화 처리 유무에 따라 4∼5% 정도의 미소한 차이가 나타났다. 알카리 농도는 중성화 약품처리, 수중용출, 야외폭로 순으로 효과가 크게 나타났으며, 이는 식생블럭의 중성화 방법 선택에 매우 중요한 내용이라 할 수 있다. 또한, 식생상태는 공극율과 골재의 입경이 큰 식생블럭이 생육에 유리한 것으로 나타났다. This study was performed to develop the environment-friendly plantable block and to evaluate unit weight, void ratio, permeability, strength, acid-resistance and value of pH by the change of the grading of waste stone and the addition amount of stone dust. The unit weight, strength, acid-resistance is increased with small size of waste stone with increase of the addition amount of stone dust. But, the void ratio and permeability is decreased. The strength of neutral plantable block is decreased approximately 4-5% than that of the normal plantable block. The decreased effect of pH increased in order to neutral treatment, underwater leaching and field exposure. It is very important contents in neutral method selection of plantable block. Also, the planting state is grown rapidly with increase of the void ratio and of the waste stone size, approximately.

보행 장애인의 재활을 위한 체중저감 제어

성윤경,이규태 朝鮮大學校 機械技術硏究所 2003 機械技術硏究 Vol.6 No.1

In this paper, a robot manipulator and position control are presented t o regulalte the unloading force with respect t o externally uncertain force variation. As an application area, it is one of rehabilitation machines of walking disable patients. First of all, the existing walking training robots were surveyed with aspect of types and specifications for the design of intelligent training robot. Several mechanisms were considered t o satisfy the strict requirements for a human friendly robot concept. An eletromechanical linear mechanism and a position control with force feedback are employed for efficient training method. The proposed control method has been applied t o the rehabilitation robot manipulator and is shown the control efficiency to retain a presetting reduced weight for two legs.

법랑아세포종의 임상병리학적 연구

성일용,류성호,신상훈,김욱규,김종렬,정인교,변기정 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

The authors analyzed retrospectively the 60 patients with ameloblastoma who were treated at Department of Oral and Maxillofacial Surgery, Pusan National University Hospital from MArch, 1990 to December, 1995. The results obtained were as follows: There were 26 males (43.3%) and 34 females (56.7%). The peak age of patients was the third decade (41.7%). The majority of cases occurred in the mandible 93.3%, especially in the angle region (91.1%). Eighteen of 60 patients (30.0%) were associated with an impacted tooth, by impacted 3rd molar teeth (16.6%), molar (10.0%), and premolar and canine (3.4%) in order., Fifteen of 60 patients (25%) were associated with an odontogenic cyst, by dentigenous cyst(13.3%), odontogenic keratocyst(8.4%), and radicular cyst(3.3%) in order. Radiographically, there were 32 unilocular types(54.2%) with average age of 24.9±10.8 years, 14 multilocular types(23.7%) with average age of 35.7±17.7 and 13 mixed types(22.0%) with average age of 41.4±15.8. Histopathologically, there were 42 follicular types(70.0%) with average age of 33.7±15.1 years and 18 plexiform types(30.0%) with average age of 26±14.6. Conservertive treatment was performed in the 33 patients(55.0%) and their average age was 25.2±13.9 years and radical treatment in the 27 patients(45.0%) and their average age was 39.3±41.8. Overall recurrence rate was 10%. A consistent correlation between the age of the patient and the radiographic or histologic type of mandibular ameloblastoma was observed. There was a tendency for ameloblastomas of the follicular type to show a multilocular or mixed appearance and for those of the plexiform type to show a unilocular appearance.

리눅스를 기반으로 한 홈오토메이션 서버의 구현

성한용,김규칠,방철원,김용석 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.B

It becomes common to use computers to control electronic devices and security facilities in newly constructed buildings and house. There are many home application devices in the market which can be controlled by computers. But they are expensive and managed by specialized companies. This paper is focused on personal computers which are available in most homes and can be used to control home electronic appliances and home security facilities. We implemented a home automation server based on Linux. The standard parallel port of personal computer is used to connect sensors and actuators. Therefore, the cost of the server is very low. Moreover, the server is connected to Internet and anywhere we can control and monitor the home security facilities and home automation systems.

선천성 수근관 증후군 1례 보고

이규훈,황치문,김민석,김희상,안경회 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.3