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Primary intraosseous carcinoma of the mandible
Hwang, Eui-Hwan,Choi, Yong-Suk,Lee, Sang-Rae 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4
A very uncommon tumor, primary intraosseous carcinoma (PIOC), is a carcinoma arising within the jaw. The definite diagnosis of PIOC is often difficult as the lesion must be distinguished from alveolar carcinoma that may invade the bone from the overlying soft tissues or from the tumors that have metastasized to the jaw from a distant site. A case of PIOC arising in the mandible is presented. The clinical, radiologic, and histologic features are described. This rare lesion should be considered in any differential diagnosis of a jaw radiolucency.
화학 증착법(CVD)에 의한 고속도강 위에 TiN의 피복에 관한 연구
황의규,진억용 亞洲大學校 1988 論文集 Vol.11 No.-
Titanium nitride(TiN) coatings were deposited on a High-Speed-Steel(SKH9) substrate by chemical vaper deposition(CVD) using the TiCl₄, H₂, and N₂gas mixtures. The effect of the deposition temperature, the H₂/N₂input ratio, the TiCl₄partial pressure, and the deposition time on the deposition rate, the surface morphology and microhardness of the TiN coatings were investigated The experimental results indicate that the deposition rate is increased almost linearly with an increase in the deposition temperature and the partial pressure of TiCl₄. The grain size of the TiN coatings is increased with an increase in the deposition temperature and the H₂/N₂ratio, But that of the TiN coatings is reduced with an increase in the TiCl₄partial pressure. When the deposition temperature is lower than 1000℃, the TiN deposition reaction is controlled by the surface reaction. At the temperature above 1000℃ the reaction is controlled by the mass transport. The apparrent activation energies are 8.6kcal/mole and 21.8kcal/mole respectively. The microhardness has close relation with the surface morphology and stoichiometric ranges of TiN coatings.
참당귀(Angelica fifas Nakai)의 캘러스로부터 체세포배 발생에 미치는 계대배양 주기의 영향
최용의,소웅영 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-
Embryogenic callus was produced form leaf segments cultured on medium containing 1.0 mg/L 2,4-D. The callus gave rise to somatic embryos after transfer the embryogenic callus to medium without 2,4-D. Also, somatic embryogenesis occured from aged callus on medium containing 2,4-D. To investigate the effects of culture periods on somatic embryogenesis the embryogenic calli were cultured for 2, 4, 6 and 8 weeks on medium containing 1.0 mg/l 2,4-D and then transferred to medium with or without 2,4-D. In prolonged preincubation, somatic embryos were formed early and at high frequency and their development normally occured. When subcultured on medium containing 2,4-D, the callus preincubated for 6 to 8 weeks was capable of producing somatic embryos. Histological observation revealed that 4 weeks-old embryogenic callus on medium containing 2,4-D was composed of mainly typical embryogenic cells, whereas the 8-weeks-old callus was composed of nonembryogeinc cells and that. In the developing state of somatic embryo on medium without 2,4-D, all the cells of callus were in vacuolated and elongated except developing somatic embryos.
임의수,최응규,조용훈 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
Since the systematic researches on the operation for compulsory local joint contract are not enough, it is required to make efforts the sound activation of this system. This study analyzes and examines the problems occurred at the operation of construction field due to compulsory local joint contract. And tries to suggest effective operational guidelines
Cutis Marmorata Telangiectatica Congenita 의 1예
김용대,송준영,이원석,박의수 啓明大學校 醫科大學 1988 계명의대학술지 Vol.7 No.2
Cutis marmorata telangiectatica congenita is a rare congenital vascular anomaly, characterized by congenital cutis maromrata, phlebectasia, opider nevi, ulceration, and in most instances, steady improvement from birth. We report a case of cutis marmorata telangiectatica congenita in 3-month-old boy who has developed localized, dark red reticulated mottling with shiny atrophic scars on the inner side of the left leg. Diagnosis was confirmed by clinical and histopathologic features.
홍의실,나병규,김민옥,유일영,채지영,채희복,윤세진,이상전,송형근,박길선,정현용 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.2
대장 지방종은 주로 우측 결장에 호발하고 특히 회맹판 부위와 맹장 부위에 호발한다. 또한 50~60대에 빈도가 높고 증상이 있는 환자에서 장중첩증이 높게는 40~50%에서 보고되고 있어 성인 장중첩증의 원인으로 중요한 비중을 차지한다. 특히 성인 장중첩증 및 장폐쇄의 중요 원인인 악성 종양과 임상 양상이 유사하여 감별진단이 중요하다. 저자들은 반복적인 복통을 주소로 내원한 환자에서 맹장의 4×5㎝의 점막하 지방종이 말단 회장부위와 반복적인 장중첩중이 발생했던 1례를 부분 절제술로 치료하여 양호한 임상 경과를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Lipomas are one of the most common benign nonepithelial tumors of the colon which are often detected incidentally by radiologic investigation or on operation. These tumors are usually without specific symptoms. Colonic lipomas occur most often in the right colon, particularly in the ileocecal valve and the cecum. Most patients are asymptomatic. but tumors larger than 2 cm tend to produce a change in bowel habit. abdominal pain. rectorrhagia and complications including luminal obstruction or intestinal intussusception. Diagnosis can be made by colonoscopy abdominal CT. MRI, or barium enema. We report a case of lipoma of the cecum that originated in the submucosa and presented as a intussusception in a 50-year-old woman with a brief review of the literature.
鄭義容 嶺南大學校 環境問題硏究所 1986 環境硏究 Vol.6 No.1
Architecture is the Compound of material and human spirit. From this relation the confronting concept between functional aspects and formal aspects that are fundamental elements in Architecture can be generated. In this study, the relation of man and Architectural space is deduced from aspects to which internal or external regultion elements in architectural design for formulation of Human-centered environment converge. The results of this study are as follow. By inter supplemental order of hierarchy, the function of architectural space is composed complicately with 5 factors: 1. Factor of Need by development stage of human consciousness and behavior. 2. Factor of Telesis by environmental condition and human relation. 3. Associational factor considering response of human consciousness to space. 4. Aesthetic factor by criteria of human Judgement on space. 5. Factor of uses by human usage of space.
서용진,신희갑,이철인,장의구 중앙대학교 기술과학연구소 1994 기술과학연구소 논문집 Vol.24 No.-
In the manufacturing of VLSI circuits, variations of device characteristics due to the slight differences in process parameters drastically aggravate the performances of fabricated devices. Therefore, it is very important to establish optimal process conditions in order to minimize device sensitivities. In this paper, we used one-dimensional process simulator, SUPREM-Ⅱ, and two-dimensional device simulator, MINIMOS 4.0 in order to extract optimal process parameter which can minimize changes of the device characteristics caused by process parameter variation in the case of short channel nMOSFET and pMOSFET device. From this simulation, we have derived the dependence relationship between process parameters and device characteristics. Here, we have presented a method to extract process parameters from design trend curve(DTC)obtained by process and device simulations.
안전한 CALS/EC 서비스 구현을 위한 정보보호기술 표준화 전략
김의탁,허철호,최용락 大田大學校 産業技術硏究所 1998 산업기술연구소 論文集 Vol.9 No.1
This paper is proposed the standardization strategy of security technology for secure CALS/EC service implementation after analyzing security technology in CALS/EC. In this paper, we discussed about security technology such as cryptography, digital signature, authentication technology and electronic payment protocol(SET) related CALS/EC. In addition to, we investigated why we need the standardization in CALS/EC security technology. According to the standardization, we will expect that compete other developed countries in global market and provide compatibility between heterogeneous systems or countries.