저압 MOCVD법을 이용한 Si델타도핑된 AlGaAs / InGaSa구조의 저잡음 P-HEMTs의 전기적 특성 ( Electrical Characteristics of Si-Delta-Doped AlGaSa / InGaSa Low Noise P-HEMTs Grown by LP-MOCVD )

전영진,정영한,정윤하 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.11

한국의 일반 흉부수술 현황

전영진 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.5

Overall 25,095 cases of general thoracic surgery were analysed, which were performed by 48 institutes in Korea during recent 6 years[242 hospital-years]. The proportions of tumorous disease and infectious disease to be operated were 6,864 cases[27.4%] and 6,775 cases [27.0%], The most common organ involved for operation was lung-bronchus 16,542 cases [69.5%], and remainders were pleura 2,500 [10.0%], esophagus 2,433[9.7%], mediastinum 1,902[7.6%], chest wall 1,297 [5.2%], and diaphragm 421 [1.7%] in order. Among 6,864 cases of tumorous diseases, the most common causes for operation were lung-bronchus tumor 3132 cases [45.6%] and most of them were lung cancer 2,731 cases [88.7%]. In the 2,019 cases of primary lung cancer with known cell type, squamous cell carcinoma 1,296 cases [64.2%] and adenocarcinoma 460 cases [22.8%] were the most. The common types in the 1,207 cases of mediastinal tumor with known cell type were neurogenic tumor 348 cases [28.8%], thymoma 311 [25.8%], and teratoma 252[20.9%]. The annual cases of operation for tumorous disease including malignant tumor were increased steadily. Operation for infectious lung diseases [including bronchiectasis and tuberculosis] were about twice common than infectious pleural disease [i.e. empyema], and operations for tuberculous disease occupied about half cases of infectious lung disease. In 11,456 cases of other disease entities, excluding tumorous and infectious disease, there were bullous lung disease 9,074 cases[79.2%], benign esophageal disease 484[4.2%], myasthenia gravis 356[3.1%], chest wall deformity 483[4.2%], and diaphragmatic lesion 421[3. 7%] in order. We propose that above results for inquiry can be used as the basic data of general thoracic surgery in Korea.

식도 아카라지아에 동반된 식도암;1레 보고

전영진 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.10

Esophageal achalasia is a disease with characteristic disorder of esophageal motility. Also, this disorder is known to be predisposing factor of malignancy. Although the incidence of esophageal cancer in patients with achalasia varies widely, the incidence hed been reported from l% to 29% in many articles. It is known that delay in management of achalasia is believed to increase the risk of malignant degeneration. We experience a case with esophageal cancer complicating longstanding esophageal achalasia.

3차원 유한요소해석을 통한 shield TBM 터널 근접시공에 의한 인접 단독말뚝의 거동에 대한 연구

전영진,전승찬,전상준,이철주,Jeon, Young-Jin,Jeon, Seung-Chan,Jeon, Sang-Joon,Lee, Cheol-Ju 한국터널지하공간학회 2020 한국터널지하공간학회논문집 Vol.22 No.1

본 연구에서는 터널 근접 시공으로 인한 기 존재 단독말뚝의 공학적 거동을 파악하기 위하여 터널로부터 말뚝선단의 이격거리와 막장압의 변화를 고려한 3차원 유한요소해석을 수행하였다. 수치해석에서는 터널 막장압을 고려하여 말뚝의 거동을 분석하였으며, 터널굴착으로 유발되는 지반침하, 말뚝두부침하, 말뚝축력 및 말뚝-지반 사이의 경계면에서 발생하는 전단응력을 고찰하였다. 말뚝이 터널 크라운(crown) 바로 상부에 위치하고 말뚝선단까지의 수직 이격거리가 0.25D (여기서, D는 터널직경)인 경우 초기 응력의 50%에 해당하는 막장압을 적용할 경우 25%의 막장압을 적용한 것과 비교한 결과 말뚝두부의 침하가 약 38% 감소하였다. 또한, 막장압의 크기가 작을수록 지반침하, 말뚝의 축력 및 말뚝-지반 사이에서 발생하는 전단응력이 증가하며, 말뚝이 터널굴착 영향권 밖에 존재할 경우 말뚝에는 압축력 형태의 축력이 발생하였다. 따라서 막장압의 크기 및 터널-말뚝선단의 상대위치는 지반 침하와 말뚝 침하에 큰 영향을 미치는 것으로 분석되었다. 본 연구에서 수행된 연구결과의 경우 기존에 보고된 연구결과를 바탕으로 비교분석을 실시하였으며, 터널굴착으로 인한 말뚝의 거동을 심도 있게 분석하였다. In the current work, a series of three-dimensional finite element analyses have been carried out to understand the behaviour of pre-existing single piles to adjacent tunnelling by considering the tunnel face pressures and the relative location of pile tips with respect to the tunnel. The numerical modelling has analysed the effect of the face pressures on the pile behaviour. The analyses concentrate on the ground settlements, the pile head settlements, the axial pile forces and the shear stress transfer mechanism at the pile-soil interface. The head settlements of the pile (the vertical distance between the pile and the tunnel: 0.25D, where D is the tunnel diameter) directly above the tunnel crown with the face pressure 50% of the in-situ horizontal soil stress at the tunnel springline decreased by about 38% compared to corresponding settlements with a face pressure 25% of the in-situ horizontal soil stress at the tunnel springline. Furthermore, it was found that the smaller the face pressure, the larger the tunnelling-induced ground movements and the axial pile forces were and the higher the degree of the shear strength mobilisation at the pile-soil interface. When the piles were outside the tunnel influence zone, compressive pile forces were developed due to tunnelling. It has been found that the ground settlements and the pile settlements are heavily affected by the face pressures and the position of the pile tip relative to the tunnel. In addition, the computed results have been compared with relevant studies previously reported in literature. The behaviour of the piles has been extensively examined and analysed by considering the key features in great detail.

말뚝의 횡방향 이격거리를 고려한 터널굴착이 인접 단독말뚝 및 군말뚝에 미치는 영향에 대한 연구

전영진,김성희,이철주,Jeon, Young-Jin,Kim, Sung-Hee,Lee, Cheol-Ju 한국터널지하공간학회 2015 한국터널지하공간학회논문집 Vol.17 No.6

본 연구에서는 3차원 유한요소해석을 실시하여 말뚝에 인접한 터널시공으로 인한 말뚝의 거동을 터널로부터 말뚝선단의 횡방향 이격거리를 고려하여 분석하였다. 단독말뚝 및 간격 2.5d인 $5{\times}5$ 군말뚝을 고려하였다. 여기서 d는 말뚝의 직경을 의미한다. 수치해석에서는 순수하게 터널굴착(tunnelling-induced) 으로 인해 유발된 말뚝침하, 전단응력, 상대변위, 축력분포, 겉보기안전율 및 터널굴착 영향권을 고찰하였다. 말뚝이 터널굴착으로 인한 지반침하 영향권 내부에 존재할 경우 말뚝두부의 침하는 Greenfield 조건의 지표면 침하보다 최대 대략 111% 크게 산정되었고, 군말뚝의 경우 단독말뚝과 비교하여 말뚝침하가 크고 축력이 작게 나타났는데 이는 군말뚝내의 말뚝이 인접지반과 함께 블록(block)의 형태로 거동하는 것으로 분석되었다. 또한 말뚝의 상부에서는 상향의 마찰 저항력이 발생하고 말뚝의 하부에서는 하향의 마찰 저항력이 발생하여 순수하게 터널굴착(tunnelling-induced)으로 인해 말뚝에는 인장력을 발생시켰다. 한편 말뚝이 영향권 외부에 존재할 경우 말뚝에는 tunnelling-induced 압축력이 발생하였다. 수치해석을 통해 분석된 하중-침하 관계로부터 말뚝의 겉보기안전율을 계산한 결과 터널굴착 이전에 비해 대략 45% 감소된 것으로 나타났다. 따라서 이는 말뚝의 사용성에 심각한 문제를 유발시킬 수 있는 것으로 나타났다. 본 연구를 통해 지반침하 영향권에 따른 단독말뚝 및 군말뚝의 거동을 심도 있게 고찰하였다. In the present work, a number of three-dimensional (3D) parametric numerical analyses have been carried out to study the influence of tunnelling on the behaviour of adjacent piles considering the transverse distance of the pile tip from the tunnel. Single piles and $5{\times}5$ piles inside a group with a spacing of 2.5d were considered, where d is the pile diameter. In the numerical modelling, several key issues, such as the tunnelling-induced pile settlements, the interface shear stresses, the relative shear displacements, the axial pile forces, the apparent factors of safety and zone of influence have been rigorously analysed. It has been found that when the piles are inside the influence zone, the pile head settlements are increased up to about 111% compared to those computed from the Greenfield condition. Larger pile settlements and smaller axial pile forces are induced on the piles inside the pile groups than those computed from the single piles since the piles responded as a block with the surrounding ground. Also tensile pile forces are induced associated with the upward resisting skin friction at the upper part of pile and the downward acting skin friction at the lower part of pile. On the contrary, when the piles were outside the influence zone, tunnelling-induced compressive pile forces developed. Based on computed load and displacement relation of the pile, the apparent factor of safety of the piles was reduced up to about 45%. Therefore the serviceability of the piles may be substantially reduced. The pile behaviour, when considering the single piles and the pile groups with regards to the influence zone, has been analysed by considering the key features in great details.

Binding Modes of a trans-Vinylbipyridinium Surfactant Bearing a Hexadecyl Chain to Cucurbit[n]uril (n = 6-8) in Aqueous Solution

전영진,Young Ho Ko,김기문 대한화학회 2008 Bulletin of the Korean Chemical Society Vol.29 No.10

『明史』『刑法志』譯註(Ⅱ) : 『明史』卷94, 志 弟70, 刑法2

全英珍 중국사학회 2004 中國史硏究 Vol.29 No.-

주원장집단과 명초전제주의 문제

전영진 경북사학회 1998 복현사림 Vol.21 No.1

복령 균핵의 알칼리추출물에서 정제한 면역활성 증강물질의 작용과 화학구성

전영진,이상달,조수묵,박정식,한상배,김환묵,김광포 한국균학회 1999 韓國菌學會誌 Vol.27 No.4

An one percent sodium carbonate extract prepared from sclerotic of Poria cocos activated the proliferation of the T lymphocytes as measured by mixed lymphocyte responses(MLR). The active fraction, PCSC22, was isolated from an one percent sodium carbonate extract by a combination of fractionation procedures, including ethanol precipitation and chromatographies on column of DEAE-cellulose and Sephadex G50. Carbohydrate and peptide contained in PCSC22 were 78 : 22% in ratio. On employing gel filtration high performance liquid chromatography, PCSC22 exhitited a homogeneous peak with an average molecular weight of 8 kDa. The sugar moiety of PCSC22 was composed with mannose (92%), galactose (6.2%) and arabinose (1.3%), which might be indicated as heteromannan. Fifteen amino acids were found in peptide moiety of the polysaccharide and aspartic acid, serine, and valine were major components. PCSC22 activated the primary proliferation of T lymphocytes measured by mixed lymphocyte responses, the antibody production of the B lymphocytes and the secretion of nitric oxide from macrophage cell line, RAW264.7.

터널근접시공에 의한 기 존재하는 인접말뚝의 거동에 지반보강이 미치는 영향에 대한 연구

전영진,김성희,김정섭,이철주,Jeon, Young-Jin,Kim, Sung-Hee,Kim, Jeong-Sub,Lee, Cheol-Ju 한국터널지하공간학회 2017 한국터널지하공간학회논문집 Vol.19 No.3

본 연구는 단독말뚝 또는 군말뚝 형태의 기초 하부를 터널이 근접통과할 경우 말뚝의 거동을 파악하기위해 3차원 유한요소해석을 수행하였다. 이때 터널과 말뚝기초 사이의 지반보강 조건별로 수치해석을 수행하여 결과를 분석하였다. 수치해석에서는 터널굴착으로 인해 유발된 말뚝침하, 축력, 전단응력 및 터널 주변지반의 전체변위를 고찰하였다. 단독말뚝의 두부침하는 지반보강의 범위가 가장 넓은 경우 지반보강을 고려하지 않은 말뚝에 비해 약 16% 감소하며, 말뚝의 최대 축력 또한 지반보강을 고려하지 않은 말뚝에 비해 약 30% 감소하는 것으로 분석되었다. 터널굴착에 따른 말뚝의 거동은 지반보강길이 (종방향 보강)보다는 보강각도(횡방향 보강)에 대해 더 크게 영향을 받는 것으로 분석되었다. 한편 오직 기초판 보강만을 실시한 군말뚝의 경우 선단부근 지반의 변위는 보강을 고려하지 않은 조건의 지반 변위와 비슷하게 나타났다. 이에 비해 말뚝두부에서는 기초판이 말뚝을 크게 구속하여 타 조건 말뚝의 경우에 비해 말뚝상부에서 축력이 약 2.5배 증가하는 것으로 분석되었다. 본 연구를 통해 보강조건에 따른 단독말뚝 및 군말뚝의 거동에 영향을 미치는 주요인자를 심도 있게 고찰하였다. In the current work, a series of three-dimensional finite element analysis was carried out to understand the behaviour of pile when the tunnel passes through the lower part of a single pile or group piles. At the current study, the numerical analysis analysed the results regarding the ground reinforcement condition between the tunnel and pile foundation. In the numerical modelling, several key issues, such as the pile settlements, the axial pile forces, the shear stresses and the total displacements near the tunnel have been thoroughly analysed. The pile head settlements of the single pile with the maximum level of reinforcement decreased by about 16% compared to the pile without ground reinforcement. Furthermore, the maximum axial force of the single pile with the maximum level of ground reinforcement experienced a 30% reduction compared to the pile without reinforcement. It has been found that the angle of ground reinforcement in the transverse direction affects the pile behaviour more so than the length of the ground reinforcement in the longitudinal direction. On the other hand, in the case of the pile group with the reinforced pile cap, the ground displacement near the pile tip appears to be similar to the corresponding ground displacement without reinforcement. However, it was found that the pile cap near the pile head greatly restrained the pile head movement and hence the axial pile force increased by about 2.5 times near the pile top compared to the piles in other analysis conditions. The behaviour of the single pile and group piles, depending on the amount of ground reinforcement, has been extensively examined and analysed by considering the key features in great details.