간장 및 담도 : 간농양 치유 후 추적 영상진단상 이상 소견을 나타내는 간농양의 조직병리학적소견

이동기(D . K . Lee),김원호(W . H . Kim),한광협(K . H . Han),최흥재(H . J . Choi),박찬일(C .I . Park) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.1

N/A Medical therapy is standard for intrahepatic abscess and generally effective, but frequently radiologically abnormal lesion persist for long time followed by ultrasonography(US) or abnormal C-T, even after successful medical treatment including aspiration and complete clinical recovery. To access the histologic features of medically healed abscess but not disappeared completely in follow-up US or ahdominal C-T we performed liver biopsies in 5 cases of healed liver abscesses. The biopsy specimens were obtained at the margin of the lesions by cutting needle with ultrasono- graphic guiding. The biopsies were performed one time in one patient at variable period after treatment, 4 weeks in 2 cases, 6, 12 weeks & 17 months in each one case. The lobular architecture of the liver was relatively well preserved except the 2 specimens obtained at 4 weeks after treatment. And the specimens within 2 months showed hemorrhagic features rather than inflammatory, such as central hemorrhagic necrosis with extravasation of RBC. The sinusaidal system was dilated slightly. Some fibrosis involving portal tract and parenchyme of the liver was noted in the specimen of 6 weeks and 12 weeks. The specimen obtained at 17 months after treatment showed nearly normal liver architecture except minimal infiltration of lymphocyte in portal tract and parenchyme. Therefore, we concluded that in completely healed liver abscess, enen if abnormal reaiologic lesion persist for long time, the histologic feature of the lesion showed some hemorrhagic necrosis and infiltration of chronic inflammatory cells.

치형오차를 가진 헬리컬리어의 진동특성에 관한연구

박찬일(C.I.Park),이장무(J.M.Lee) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.6_2

Gear vibration is caused by the mesh stiffness, gear accuracy, and assembling errors. For these reasons, helical gear has the axial, radial, and rotational vibrations. In this study, the mesh stiffness is calculated by considering the tooth bending, contact, and foundation deformations. Rotational vibration of helical gear with tooth error is modeled by 1 DOF vibration equation and is analyzed numerically. Also, by a specially designed experimental set-up, the results of analysis are cross-checked and the vibration characteristics of helical gear are discussed.

식도에 발생한 원발성 Small Cell Carcinoma - 보고 -

박찬일(C I Park),김충배(C B Kim),최일섭(I S Choi),홍인철(I C Hong),김주항(J H Kim),이두연(D Y Lee) 대한소화기학회 1986 대한소화기학회지 Vol.18 No.1

The primary small cell carcinoma of the esophagus is very rare malignant disease. McKeown described if first 2 cases at 1952 and about 70 cases were reported thereafter. This tumor is indistinguishable clinically from the squamous cell carcinoma but it is more aggressive than that. It is easily diagnosed with the light microscope and the pulmonary lesion should be ruled out. And it is confirmed by detection of neurosecretory granule under the electron microscope or cytoplasmic argyrophilia with the Grimelius stain. The choice of treatment is the chemotherapy but the surgery or radiationtherapy is indicated in bulky tumor. The prognosis is extremely poor and the most cases were not survived 1 year. We experienced a case of primary small cell carcinoma of the esophagus at Severance Hospital Yonsei University College of Medicine.

자동차 헬리컬기어의 하중전달 특성해석

박찬일(C.I.Park),이장무(J.M.Lee) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1992 No.11

The purpose of this study is to develop a computer simulation program for analyzing load transmission characteristics of a helical gear system in design stage. In this analysis, the transmission error,<br/> load distribution, root stress, and contact area are. investigated. That is, the influence function of deflection are obtained by finite element analysis and the influence function of approach and gear tooth error are considered. Load distribution, transmission error, and contact area are calculated by solving load-deflection equation which includes the these influence functions and tooth error and the influence function of bending moment are obtained by finite element analysis and root stress is calculated by the load distribution and the influence function of bending moment. The results of the simulation are cross-checked through a specially designed experimental set-up.

자동차 헬리컬기어의 하중전달 특성해석

박찬일(C. I. Park),이장무(J. M. Lee) 한국자동차공학회 1995 한국 자동차공학회논문집 Vol.3 No.5

담낭관의 Sorcoma Botryoides (Rhabdomyosarcoma)

김춘규(C. K. Kim),황의호(E.H. Hwang),조장환(C.H.. Cho),이광찬(K.C. Lee),박찬일(C.I. Park) 대한외과학회 1979 Annals of Surgical Treatment and Research Vol.21 No.12

誘導型 리니어모터의 動特性 計測

김인근(I. k. Kim),정현갑(H. G. Chung),박찬일(C. I. Park),박희창(H. C. Park),김봉섭(B. S. Kim),박승찬(S. C. Park),정연호(H. H. Chung),김양모(Y. M. Kim),장석명(S. M. Jang) 대한전기학회 1994 대한전기학회 학술대회 논문집 Vol.1994 No.7

The Effect of Local Irradiation in Prevention and REversal of Acute Rejection of Transplanted Kidney with High-dose Steroid Pulse

I.H. Kim(김일한),S.W. Ha(하성환),C.I. park(박찬일),S.T. Kim(김수태) 대한방사선종양학회 1986 Radiation Oncology Journal Vol.4 No.1

1979년부터 1984년까지 이식신에 대하여 39회의 국소적 방사선조사가 서울대학교병원 치료방사선과에서 시행되었다. 10회는 예방적으로, 29회는 치료적으로 시행되었고 전체 환자 수는 29명이었다. 방사선조사는 1일 150cGy로 격일간 450cGy를 원칙으로 하였으며 methylprednisolone(Solumedrol)과 동시 병용되었다. 면역억제제로서 prednisone과 Imuran은 이식 후 계속 투여되었다. 방사선조사 시기는 예방목적일 경우에는 이식수술 후 1, 3, 5일에, 치료목적인 경우에는 거부반응의 진단 후 어느정도 시간간격을 두고 시행되었는데, 간격은 개인차이가 있었다. 10예의 예방적조사를 받은 이식신의 8예가 추후 거부반응이 출현하였으며, 이식 후 15개월 후에 기능적 생존을 보인 예는 없어서 예방적조사 효과는 회의적이었다. 치료목적으로 처음 조사받은 21예의 거부반응 회복율은 71%였고, 방사선조사 전 혈청 크레아티닌이 5.5mg%이하일 경우는 93%,; 5.5mg%이상일 경우는 17%였다(P<0.01). 극복이 안된 경우 재차 방사선조사에 대한 효과는 초회효과보다 열등하였다. 거부반응이 회복된 경우에 47%가 재차 거부반응이 출현하였다. 거부반응에 대한 처음 방사선조사 후 이식신의 기능적 생존율은 방사선조사 후 6개월, 1년, 2년 및 3년에 각각 70%,;65% 및 54%였고, 방사선조사 전 혈청 크레아티닌 수준, 거부반응 진단 후 방사선조사까지의 경과시간 및 방사선조사후의 반응 등이 이식신의 기능적 생존에 유의한 영향을 미침을 알 수 있었다(P<0.001). 따라서 방사선조사로 효과를 얻기 위하여는 거부반응으로 인한 이식신 파괴가 한계수준을 넘지 않는 범위 내에서 시행함이 필요함을 알 수 있었다. 이 효과는 Solumedrol과 병용된 결과이므로 방사선조사의 상대적 기여도를 밝히는 것은 어려웠다. From 1979 to 1984, 39 local allograft irradiations were given to 29 patients: 10 irradiations were administered for prevention and 29 for reversal of acute rejection of transplanted kidney. Three doses of 150 cGy every other day were combined with high-dose of methylprednisolone pulse (1 gm/day) for 3 days. For prevention of acute rejection, local irradiation was delivered on the days 1, 3, and 5 after the transplantation, and for reversal, irradiation started after the diagnosis of acute rejection. Eight out of 10 patients irradiated for prevention had acute allograft rejection, and, what is more, there was no surviving graft at 15 months after transplantation. Reversal of acute rejection was achieved in 71%. When the pre-irradiation level of serum creatinine was below 5.5mg%, the reversal rate was 93%, but above 5.5mg% the reversal rate was only 17% (p<0.01). Reirradiation after failure was not successful. Among 15 reversed patients, 7(47%) had subsequent rejection (s). The functional graft survivals at 6 month, 1, 2, and 3 year were 70%,;65%,; 54%,;and;54%, respectively. Therapeutic irradiation resulted in better graft survival when serum creatinine was below 5.5mg% (p<0.001) or when irradiation started within 15 days after the diagnosis of acute rejection (p<0.001).

Intracavitary Irradiation of Carcinoma of the Nasopharynx

허승재,박찬일,Huh S. J.,Park C. I. The Korean Society for Radiation Oncology 1985 Radiation Oncology Journal Vol.3 No.2

비인강암의 강내조사법은 외부조사후 추가조사법으로서, 또한 재발병소에 비교적 용이하게 재조사할 수 있는 장점이 있으며 비인강암의 국소치유율을 상승시킬 수 있다. 저자는 비인강암 환자에게 추가조사법으로서 또한 재발된 예에서 비인강암의 강내조사를 시행하여 보고하는 바이다. A simple Intracavitary irradiation of carcinoma of the nasopharynx has been found useful as a supplementary radiation boost to the primary site, and as a method of re-irradiation for recurrence in the nasopharynx. Hopefully, local tumor control can be enhanced by employing this technique.

가스사고 통계 및 분석에 관한 고찰

권혁진,박찬옥,박찬일,여창훈,이장우,홍지룡,Kwon, H.J.,Park, C.O.,Park, C.I.,Yeo, C.H.,Lee, J.W.,Hong, J.R. 한국화재조사학회 2008 한국화재조사학회 논문지 Vol.11 No.1

각종 화재사고 분류 중 대표적으로 나타나는 가스사고는 그 형태와 원인이 다양하다고 할 수 있다. 가스사용량은 사용가구수가 증가와 사용 장소 및 가스기기의 다양화로 증가하고 있으며, 2007년도 가스사용량은 35,078천톤으로서 연평균 9.4%증가하였다. 가스사고는 95년 557건을 최고로 하여 2007년도에는 123건 발생하여 연평균 11.5%감소되었다. 가스의 종류에 따른 사고건수는 LP가스의 경우 전체 가스사고중 약 80%를 차지하고, 도시가스와 고압가스가 약 20%를 차지하고 있다. LP가 많았고, 특히 공급자부주의에 의한 사고가 끊이지 않고 증가하고 있는 추세이다. 가스사고는 사용자취급부주의, 공급자 취급부주의, 시공불량 및 노후제품으로부터 사고가 발생하여 인명과 재산피해가 발생하고 있다. 본 논문에서는 가스사고의 분류와 형태별, 원인별, 지역별 등에 대한 사고분포를 통해 가스사고의 원인에 대한 이해를 하고 가스안전사고를 예방하는 자료로 활용되도록 하였다. Among the various cases of fire accident, gas accident which is roost essential have a lot of forms and causes. The quantity consumed of gas is increasing because of increment of gas-using families and variations of gas machinery. The quantity consumed of gas in 2007 was 35078 tons and the average rate of increasement was 9.4%. The amount of gas accident was on the peak at 1995 when 557 accidents occurred in a year. In 2007, 123 gas accidents was occurred and the average rate of diminution was 11.5%. Accidents by LP gas took 80% of the whole accident and city gas and high pressure gas took 20%. In case of LP gas, accidents were usually occurred because of lack of blocking after the removal of gas machinery and moveable butane burner. Especially, the accidents cause by carelessness of a provider is increasing. Gas accidents which generate damage of human life and property, are caused by users' carelessness, providers' carelessness, inferiority of structure and old products. In this thesis, We will classify the gas accidents. Furthermore through the classification of accidents by forms, causes and regions, this thesis going to be a reference to understand and prevent the accidents.