복강경을 이용한 대장 부분 절제 시행 1예

박재갑,서경석,정회원,김선회,오용석,송인성,박용현 대한대장항문학회 1993 Annals of Coloproctolgy Vol.9 No.1

GIS를 활용한 효율적인 농촌경관관리구역 설정에 관한 연구

서주환,최현상,변성진,안재홍,양희승 경희대학교 부설 디자인연구원 2002 예술· 디자인학연구 Vol.5 No.1

Land use and social, cultural and environmental safety, which are adapted to natural environment, based on the traditional agricultural society, are on the verge of collapse because our rural community was developing around economy value. Rural landscape has not been certified compared with urban and natural landscape in importance by the standard of functional aspect, economic value and use demand, so cultural, historical, traditional and agricultural landscape native to rural community are not evaluated exactly. The Purpose of the study is a efficient plan and management for a essential rural landscape. Therefore We Make out a landscape diagram for efficient landscape plan and management and Selection of the Rural Landscape Management Area.

PID제어에 의한 單相 昇·降壓 整流器의 입력전류 특성에 관한 연구

徐基永,李壽欽,柳在葉,文相弼,李來一 경남대학교 신소재연구소 1999 論文集 Vol.11 No.-

Distortion Minimized of Input Current for Single-Phase Buck-Boost Rectifier is studied in the paper. To sinusoidal waveform the input current with a near-unity power factor over a wide variety of operating conditions, the output capacitor is operated with voltage reversibility for the supply by arranging the auxiliary diode and power switching device. Then the output voltage is superposed on the input voltage during on time duration of power switching devices in order to minimize the input current distortion caused by the small input voltage when changing the polarity. The tested setup, using two insulated-gate bipolar transistors(IGBT) and a microcomputer, is implemented and IGBT are switched with 20[kHz]. which is out of the audible band. Moreover a rigorous state-space analysis is introduced to predict the operation of the rectifier. The experimental and simulated results confirm that the input current can be sinusoidal waveform with a near-unity power factor and a satisfactory output voltage regulation can be achieved.

고빌리루빈혈증을 동반한 자가면역성 간염 1례

서영범,김성욱,장재식,강혁주,이중현,윤병구,김욱년,이광헌,이구,유석동,양창헌,이정호,이영현,이창우,서정일 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-

자가면역성 간염은 대개 만성 경과를 가지며, 혈중 자가면역항체와 혈청 글로불린치의 상승, 그리고 조직학적으로 괴사 염증성 변화를 특징으로 하는 질환으로 아직 정확한 병인이 밝혀져 있지 않은 상태이다. 발병연령은 대개 젊은 영자(15-25세)에서 호발한다. 이 질환은 급성 간염의 임상경과를 보일 수 있으나, 심한 급성 간염이나 전격성 간염으로도 나타날 수 있는데, 이 경우 아주 나쁜 예후를 보인다고 한다. 치료는 자가면역성 간염 임상 경과의 다양성이나 병인, 병리기전의 불확실성에도 불구하고 대개 steroid 치료에 반응하는 것으로 알려져 있으며 대개 80%의 관해율을 나타내며 궁극적으로 간경변으로의 진행을 막을 수 있는 것으로 보인다. 저자들은 58세 남자에서 발생한 급성의 경과를 가지고 심한 황달을 동반한 자가면역성 간염을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Autoimmune hepatitis (AIH) is a chronic necroinflammatory liver disorder of unknown cause associated with circulating autoantibodies and a high serum globulin level. The age of onset of AIH show a peak between the age of 15 and 25 years. AIH can develop and be manifested as acute hepatitis, but severe form of acute hepatitis or fulminant hepatic failure has a poor prognosis. Although AIH is likely to progress from chronic active hepatitis to cirrhosis, steroid therapy can control the disease activity, prolong survival, improve the quality of life , and defer liver transplantation. In the present report we describe a 58-year-old man who admitted because of progressive jaundice and fatigue. He was diagnosed with AIH from laboratory test result showing positivity for antinuclear antibodies, anti-smooth muscle antibodies, and negativity for hepatitis viral markers and from liver biopsy. Steroid therapy, oral administration of prednisolone, was effective in improving the liver function test. Following liver biopsy 6 months after onset shows markedly improved necroinflammatory activity.

白鼠에 있어서 加齡에 따른 顎關節 圓板의 形態 및 微細構造的 變化

徐惠敬,성재현 慶北大學校 齒科大學 1991 慶北齒大論文集 Vol.8 No.2

The purpose of this study was to investigate change in the shape, elastic fiber and ultrastructure of the articular disc of the rat mandibular joint with aging. Mechanical stress applied to the articular disc changes during neonatal, suckling, juvenile, adult and senile stages. Mandibular joints of 6 groups of rates (1-, 7-, 17-, 27-, 55-day over-1-year groups) were removed en bloc and processed for light and electron microscopic study. The changes in the shape of articular disc were examined by light microscope in each group. Concentration, diameter and arrangement of elastic fiber of articular disc were examined by light microscope. Structural and ultrastructual changes in the articular disc were examined by light and electron microscope in each group. The results were as follows: In the 1-day and 7-day groups, the articular disc was long and slender in shape and the articular disc was not fitted with the shape of the mandibular fossa and condyle. However, after that time, the anterior and posterior portions of the articular disc were more bulged and the middle portion was shorter and biconcave. Thus the articular disc was well fitted with the shape of the mandibular fossa and condyle. The elastic fibers increased in concentration and diameter from the 1-day to the 55-day groups and was maintained after that time. The elastic fibers were irregularly arranged in 1-day and 7-day groups, but regularly arranged after that time. The elastic fibers were arranged anteroposteriorly, transversely and vertically in anterior and posterior portions, but in the middle portion arranged mainly anterposteriorly; a few fibers were arranged transversely. The cell density decreased with aging. In the 1-day and 7-day groups, the Golgi apparatus, rough endoplasmic reticulum and free ribosome, which are involved in the synthesis of intracellular and extracelluar matrix, were developed. In the 17-day, 27-day and 55-day groups, not only the cell organelles involved in the synthesis of the intracelluar and extracellular matrix but also the cell organelles involed in the remodeling of the extracellular matrix (i.e., finger-like cell porcess, lysosome and mitochondria) were well developed. With advancing age, intracytoplasmic microfilaments were more accumulated and chondroid cell increased. In the over-1-year group, the majority of cells of the articular disc were chondroid cells. The majority of cytoplasmic compartment were filled with intracytoplasmic microfilaments and cell organelles were not developed. Therefore, metabolic activities of the cell was markedly reduced and cells contained structures enduring mechanical stress, and cells which were in the process of degeneration were observed occasionally.

비집속빔을 이용한 CO_2 레이저 빔 조사강화

서정,이제훈,강희신,김정오,이문용,오상진,이규현 한국레이저가공학회 2003 한국레이저가공학회지 Vol.6 No.2

Defocused CO_2 laser beam irradiation strengthening of 60kgf/㎟ grade steel sheet was investigated to obtain the tensile strength similar to that of fully penetrated one by the focused beam. The melted line width by the defocused beam was 3∼4 times larger compared to that of the focused beam. However, the increase of tensile strength with 1 line irradiation by the defocused beam was similar to that of 2∼3 lines by the focused beam. The increase(37.6%) of bending strength with 1 line by the defocused beam was higher than the increase(12.9%) of tensile strength. Also, the effect of cooling gas to strengthening was observed.

기능형 반대교합자의 Activator 치료후 변화에 관한 장기관찰

성 재 현,서 혜 경 慶北大學校 齒科大學 1984 慶北齒大論文集 Vol.5 No.1

This investigation was carried out in order to define the changes after activator treatment on the functional crossbite patients. The data were obtained from 8 patients' serial lateral cephalograms at pre-treatment, posttreatment, and several years later. The results were as follows; 1. Increased mandibular plane angle (∠SN / MP) after activator therapy decreased to pretreatment state during posttreatment observation period. 2. Palatal plane angle (∠SN / MP) were stable during entire period from pretreatment and posttreatment to several years later. 3. Maxillary incisor angulation (∠PP / ⊥) had tendency to increase after Activator therapy. 4. Mandibular incisor angulation (∠MP / ┬) had tendency to increase after Activator therapy.

자기 효능의 개념 분석

서순림,이은남,박송자,양영희,이동숙,최은옥,구미옥,김인자,이인숙,김성재,박영임,이은옥 서울대학교 간호대학 간호과학연구소 1997 간호학 논문집 Vol.11 No.1

Today human needs for health promotion and maintenance are increasing. The nursing progression has a great responsibility for helping clients to practice good health behavior. self efficacy was found to be potent predictor in initiating and maintaining the health-related behavior. Therefore, the concept is important in nursig intervention for change of health behavior. The purpose of this paper was to analyze and clarify the meaning of the concept, self efficacy. This study used Walder & Avant's process of concept analysis. Critical attributes of self efficacy were : 1) positive perception of his won capability; 2) intrapersonal strength; 3) possibility of being learned; 4) individuality; 5) specificity; 6) generalizability. Antecedents of self efficacy consist of those facts that 1) new situation occurs; 2) individuals have needs to change the new situation; 3) there are some required actions in new situation. Consequences occurring as a result of self efficacy consist of those facts that 1) individual initiates the of failure; 5) cope with the situation; 6) controls the situation; 7) the level of self efficacy is enhanced; 8) the level of self-esteem is enhanced.

지구환경 변화와 관련된 한국 연근해 해양 이상변동

서영상,장이현,황재동 한국환경과학회 2003 한국환경과학회지 Vol.12 No.3

Oceanographic features around Korean waters related to the global change were studied by analysis of the longterm variation of water temperature, dissolved oxygen, sea level of the surface layer with I℃ temperature, spatial position of the subpolar front in the East Sea/Japan Sea (the East sea hereafter) and the Wolf Sunspot Number. With the global warming, the temperature of Korean waters has been increased 0.5~1.0℃ for 33years (1968~2000). In case of the dissolved oxygen in the East Sea has been decreased 0.46㎖/ℓ. Year to year vertical fluctuations of the monthly anomalies of the surface layer with 1℃ water in the East Sea have predominant periods with 15years as the longterm variation of Arctic climate, 12 and 18years as the El Nino-Southern Oseillation. Spatial position of the subpolar front in the East Sea moved to northern part of the sea from the southern part of the sea with the increasing sea surface temperature. The relationship between the number of Wolf Sunspot and the anomalies of sea surface temperature was very closer after the late of 1980s than those before the early of 1980s in Korean waters.

韓國人 混合齒列期 兒童 및 成人에 관한 頭部放射線學的 計測

徐惠敬,成在鉉,權五源 慶北大學校 齒科大學 1986 慶北齒大論文集 Vol.3 No.1

正常咬合을 가진 混合齒列期 兒童(男子 55名, 女子 46名) 및 成人(男子 41名, 女子 36名)을 對象으로 側貌 頭部放射線規格寫眞上에서 坂本分析法에 의해 頭蓋顔面骨의 成長 變化를 觀察하여 다음과 같은 結論을 얻었다. 9才, 11才, 成人에서 男女別 各 計測項目의 平均値, 標準偏差 및 profilogram을 얻었다. 頭蓋顔面骨의 크기는 深度에서는 9, 11 才에서 男女間 有意差는 거의 나타나지 않았으나, 高徑은 9才에서 男子가 上顔面部 및 下顎部에서 더 크게 나타났으며 11才에서는 N, PTM, PNS를 제외한 全 項目에서 男子가 더 크게 나타났다. 成人에서는 深度에서 GO, 高涇에서 N을 제외한 金 項目에서 男子가 더 크게 나타났다. 9才에서 11才까지의 平均成長量은 上顎 中切齒 및 上下顎 第一大臼齒, 신부에서는 큰 것으로 나타났고 上顔面部, 上顎部에서는 비교적 작은 것으로 나타났으며, 頭蓋顔面骨의 전반적 成長은 S를 中心으로 하였을 때 下方性 長傾向이 優勢한 前下方成長을 하였다. The purpose of this study was to investigate the growth change of craniofacial complex in korean children & adults. The subjects included 55 males and 46 females in children, 41 males and 36 females in adults. A series of 2 lateral cephalometric radiographs obtained from each child at age 9 and 11 and 1 lateral cephalometric radiograph obtained from each adult were analyzed by Sakamoto's coordinate system. The conclusions were as follows : Means, standard deviations and profilograms from measurements were obtained at age 9, 11 and adult. Sexual difference in depth of craniofacial complex was hardly found at age 9 and 11, but in height male was larger than female in upper facial and mandibular portion at age 9 and in all of the items except N, PTM, PNS at age 11. At Adult male was larger than female in all of the items except Go in depth and N in height. Growth increments of upper and lower incisors, upper and lower first molars and chin portion from age 9 to 11 were large, whereas those of upper facial and maxillary portions were relatively small, and the craniofacial complex grew forward and downward, but more downward.