젊은 남자에게 발생한 통상성 간질성 폐렴과 동반된 폐암 1예

박종숙,이준혁,박성우,장안수,박춘식,박재성,백상현,고은석,신화균 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Usual interstitial pneumonia(UIP) is relatively rare disease of lung parenchyme under the age of 50. Lung cancer is reported to occur as a complication of UIP, but has not been reported in young age patient with UIP in Korea. A 35-year-old man was admitted to the hospital because of dyspnea, cough and mild fever. He had been suffered from dyspnea during 3 years. The dyspnea worsened recent 1 month ago. He had been treated with pneumonia at another hospital during 4 months before this admission. Chest radiographs and High resolution CT showed subpleural and basal dominant reticular opacities in both lung with no change until now. He was smoker and his occupation was car engine-man dealing with benzene. UIP is suspected by history and radiologic findings. Operation for open lung biopsy was performed to obtain lung specimen via video-assisted thoracoscopic surgery. Patient's pathologic examination showed UIP combined with adenocarcinoma in RLL superior segment and posterobasal segment and RLL lobectomy was done. After operation, the patient has been in cancer free condition so far. We report a case of UIP combined with lung cancer in young man with brief review of the literature.

평면변형률 압축시험에 의한 입상체의 강도이방성

박춘식 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

Anisotropy in strength and deformation characteristics of isotropically consolidated sands prepared by pluviating through air was studied by plane strain compression tests. Seven types of sand of the world-wide origins were tested, which have been extensively used for research purposes. The strains for direction of maximum principal stress and direction of minimum principal stress were measured continuously from 10(-6) to 10-². The following results common for all sands were obtained. The behaviour at strains less than about 0.001% was elastic and isotropic regardless of the angle δ of the σ₁ direction relative to the bedding plane. However, the sands became gradually more anisotropic as the strain increased exceeding the elastic limit. The peak strength was noticeably anisotropic with a similar trend that the angle of internal friction φ decreased as δ decreased from 90°, and the ratio of the smallest to largest values of φ was between 0.982 and 0.90. The φ has a minimum at δ=0°∼30 depending on the types of sand. The residual strength became isotropic again.

구속압 및 과압밀비가 점성토의 변형·강도특성에 미치는 영향]

박춘식,장정욱,최차석 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

The purpose of this study is to investigate the deformation and strength characteristics of clay by confining pressure and O.C.R by triaxial compression test. The results are shown as follows. 1)In normally consolidated clay soil of confining pressure, the more σ₃is increased, the more internal friction angle is decreased. 2) Within 0.3~4.0kgf/㎠ range of σ₃, internal friction angle has shown confining pressure about 5~6˚. 3)A point of destory, pore-pressure moduls is increased as σ₃is getting increase.

실내요소시험에 있어서 공시체와 단면과의 마찰경감에 관한 연구

박춘식 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

In order to find the proper composition of lubrication layer to be used for element tests of granular materials in the laboratory, a series of direct shear tests between a granular material specimen and a lubrication layer was performed. The granular materials used ranged from a fine sand to a gravel with D50=0.16mm∼1.85mm. The lubrication layer consisted of a layer of silicone grease and a latex rubber disk, and its variations. Based on the test results, the following points are shown: For Silver Leighton Buzzard Sand(D50=0.62mm) and Hime Gravel(D50=1.85mm), a proper amount of powder should be added to the original grease in order to improve the quality of lubrication by preventing the squeezing out of grease from the places of stress concentration in the proximity of particles indenting the lubrication layer. At the same time, the amount of powder should not be too much in order not to increase the shear resistance of a mixture of grease and powder. Fly ash is suggested as a proper type of powder. By this method, even for Hime gravel, a low value of φμ of around 0.8 degrees at normal stress of 1.5∼70.kgf/㎠ can be obtained.

경사하중이 작용하는 연약지반의 압밀침하 산정에 관한 연구

박춘식,장정욱,김범수 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This study determined consolidation settlement in soft ground with the tilted load by means of Terzaghi's one-dimensional consolidation theory and FEM. It was also compared with field measured value. The conclusions are summarized in the following. ⅰ) The consolidation settlement from Terzaghi's one-dimensional consolidation theory differ considerably from the measured value, but showed almost similar to that from FEM. ⅱ) Terzaghi's one-dimensional consolidation theory showed variable consolidation settlement according to methods to obtain △P. ⅲ) Consolidation settlement determined by FEM turned out to better evaluate the field settlement than Terzaghi's one-dimensional consolidation theory.

하천제방의 차수벽 심도 결정에 관한 해석적 연구

박춘식,장정욱,강남욱 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This study examined the safety factors of piping according to changing in the heights of levee and water level and the slope gradient. We also examined the safety facotors after installing the cut-off wall in unsafe cases. The following are the results of this study. (1) In cases of levees with the same slope gradient, the appropriate depth of the cut-off wall became deeper as the heights of levee and water level rised. (2) When the heights of levee and water level were set constant, the appropriate depth of the cut-off wall became shallower as the slope became steeper. The slope gradient became less effective as the depth of the cut-off wall became deeper. (3) When the levees height was constant, there was a tendency for hydraulic gradient to decrease almost in the same rate as the height of water level became lower by 1m. (4) To determine the depth of the cut-off wall, the effects of the heights of the levee and water level turned out to be greater than the effect of slope.

지하수위 고려방법에 따른 사면안전율의 비교연구

박춘식,장정욱,장일석 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

This study examined soil parameters, existence of ground water, and the safety factors of slope according to the ground water level. The following are the conclusions of the study. (1) The safety factor became less as the ground water level decreased. (2) The greater the cohesion became, the less the safety factors according to the ground water level did. (3) In the case with ground water, greater cohesion had less effect on the safety factor. However, in the case without ground water, changes in cohesion had considerable effects on the safety factor. (4) While the safety factor increased associated with increase in the angle of shear resistance as the ground water level, the safety factor according to cohesion was almost constant.

下氣道感染性疾患에서의 Sultamicillin 臨床硏究

朴春植,金建烈 최신의학사 1986 最新醫學 Vol.29 No.4

사면안정 해석방법의 차이에 의한 안전율의 비교 연구

박춘식,장정욱,안준희 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

This study performed slope stability analysis by changing analysis methods and shear strength with the slope stability analysis program. The conclusions of the study are as follows. 1) The safe factor of clayey soil applied with Bishop's simple method turned out to be similar to or slightly higher than those of other methods, for both dry and saturated conditions. 2) The safe factor of sandy soil applied with GLE method turned out to be slightly higher than those of other methods. But when applied with Bishop's simple method, it appeared to be slightly higher than those of other methods. 3) The safe factor of ordinary soil applied with GLE method showed the highest result. 4) Janbu method showed the lowest safe factor among all the methods for the above three types of soils.

교대의 조시시공을 위한 단계별 성토고 결정에 관한 연구

박춘식,장정욱,김종환 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This study suggests solutions to the problem of consolidation settlement or lateral movement, which may occur when roads or civil structures are constructed on soft clay. It also presents a proposal to determine appropriate height and time of embankment for early construction of abutment, on the basis of soil parameters in terms of reverse analysis. The following shows the summary of the study. (1) The Hyperbolic method was applied to the field measurement to compute a predictable final settlement. (2) The field measurement was analyzed by Asaoka method and a reverse analysis was carried out on the coefficient of consolidation of the vertical drain method. (3) The target amount of settlement was determined by the try and error method, which considered consolidation settlement to form the planned height. (4) Appropriate heigh and time of stepped embankment was determined to reach the target amount of settlement. (5) Slope stability of the step embankment was examined.