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순수 Titanium주조체의 기계적 성질에 미치는 소둔온도와 유지시간의 영향
윤일,김형일,최석규 大韓齒科器材學會 1993 대한치과재료학회지 Vol.20 No.2
The effect of annealing temperature and holding time on the mechanical properties of pure titanium castings was investigated by means of microhardness test, compression test, microscopic observation, and EDS. Casting process was carried out under argon gas and the heat treatment was carried out under air. The results were as follows : 1. The mechanical properties of the specimens heat-treated at 500, 750℃ were slightly increased, but those of specimen heat-treated at 1,000℃ were remarkably increased by prolonged holding time. 2. The microstructures of specimens heat-treated at 500, 750℃ were bluntly serrated α structure, but that of specimen heat-treated at 1000℃ showed the mixture of acicular α and platelike α structures with a great number of fine precipitates. 4. The surface reaction layer was gradually thinned away by prolonged holding time at 1,000℃, Al and Si elements of the surface reaction layer were homogeneously diffused to the inside of the specimen.
OCL을 사용한 데이터베이스 제약사항 일관성 검증 프로세스
최윤석 同德女子大學校 情報科學硏究所 2005 정보과학연구 Vol.9 No.-
데이터베이스를 활용하는 웹 응용 시스템을 객체지향 기반으로 개발할 경우 클래스 다이어그램, 개체관계 다이어그램 등 다양한 설계 모델의 작성이 필요하다. 이러한 설계 모델들 사이에서 데이터베이스 제약사항의 일관성을 유지하고 확인할 수 있어야 하며, 이를 위해서 정형 언어를 적용하여 제약사항을 명세하는 것은 좋은 해결방법이 될 수 있다. 본 논문에서는 UML의 OCL을 활용하여 데이터베이스 제약사항을 명세하고 이를 검증하는 프로세스를 제안한다. 제안하는 프로세스에 사용하기 위해 데이터베이스 제약사항 중 핵심이 되는 제약사항들을 키 제약사항, 참조 제약사항, 그리고 속성 제약사항으로 분류하였으며, 이에 대한 OCL 명세 방법을 제시하였다. 제안한 방법의 명세 효과를 확인하기 위해 기존의 데이터베이스 모델링에 사용하는 ODL과 E-R 다이어그램과의 명세 정도를 비교하였다. It is essential to develope class diagrams, E-R diagrams, and other various diagrams in case of constructing web application systems with the database applying object-oriented methods. These models have to maintain consistency about constraints of the database and to be checked about consistency. Formal languages are a good solution to specify the constraints. This paper proposes a process that specifies and verifies the constraints of the database with OCL. The constraints of the database can be categorized with three types : Key constraints, Referential constraints, and Attribute Constraints. We shows the specifying method about three types. To validate the effectiveness of the proposed method, we compare the method to ODL and E-R diagram which are used to model the database.
한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고
최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1
The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.
최현성,이지현,윤석권,김한욱,임철완 대한피부과학회 2004 大韓皮膚科學會誌 Vol.42 No.3
Papillary eccrine adenoma is a rare benign sweat gland neoplasm. It occurs most often as a solitary nodule in women and is located predominantly on the distal portion of the extremities. This tumor is similar to tubular apocrine adenoma in histological and clinical aspects, so distinction of these tumors is still controversial. We report a case of two papillary eccrine adenomas developed on the left popliteal and calf area of a 58-year-old-man, this is the first report of the multiple papillary eccrine adenomas in Korea. (Korean J Dermatol 2004;42(3):353~355)
비만을 동반한 위암 환자에서 두 병을 같이 수술 치료한 경험(증례)
최경현,윤기영,문형환,신연명,서경원,안수미,송윤미,석정희,정경연,이은하 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3
Obesity is growing problem in Korea. We had a case of bariatric surgery during gastric cancer operation. Patient was 29 year old Korean lady with early gastric cancer located in the lesser curvature side of the middle 1/3 of the stomach. Her body weight was 89 kg, height 163 cm, and thus body mass index was 33.5 kg/m2. Preoperative blood pressure was 130/90 mmHg, hemoglobin 12.9 g/dL, total lymphocyte count 3,280/mL, serum albumin 4.3 g/dL, CEA 1.1 ng/mL, CA 19-9 9.1 ng/mL, and alpha fetoprotein 2 ng/mL. Another associated disease was right thyroid follicular neoplasm. The chest X-ray was normal. After IM injection of 2,500 units of heparin 30 minutes before the induction of general anesthesia, she received curative subtotal gastrectomy and Roux en Y gastrojejunostomy when a malabsorption loop of 120 cm jejunum was incorporated between the Treitz ligament and the end to side jejuno-jejunostmy site at May 29th 2006. Her postoperative course was uneventful except a minor wound seroma and the elevations of serum amylase(up to 4 folds) and lipase(up to 2 folds). She lost her body weight 9 kg in 5th, 21 kg in 7th, and 27 kg in 10th postoperative months to became 61.5 kg. On follow up exams in July 2008, she gained 4 kg to overcome her weakness and fatigue. From the above result, the incorporation of a malabsorption loop during reconstruction phase of gastric cancer operation was a good option for obese gastric cancer patients especially in cases of early gastric cancer.
이용주,최혜자,윤석권,김한욱,임철완 대한피부과학회 2004 大韓皮膚科學會誌 Vol.42 No.3
Basal cell carcinoma is the most common malignant skin cancer in Korea. The lesions are most frequently found in the head and neck region. But penile basal cell carcinoma is very rare and there are only 29 other reported cases. We report a rare case of basal cell carcinoma of the penis in a 76-year-old man. He had a well circumscribed 1.3㎝×1.3㎝ thick scaly plaque with central ulcer in right penile root area for 4 years. The lesion was completely excised and no recurrence for four months. (Korean J Dermatol 2004;42(3):350~352)
L929 및 CV1 세포를 사용한 한천중층법에서 치과용 합금의 독성 비교
조욱희,윤일,최석규,김형일 大韓齒科器材學會 1993 대한치과재료학회지 Vol.20 No.2
Biocompatability of pure gold, Au alloy, pure titanium, Ti alloy, Ni-Cr alloy, Co-Cr alloy and pure copper was assessed through the agar overlay test using L929 and CV1 cells. Pure gold, pure titanium and Ti alloy had none to mild cytotoxicity, Ni-Cr, Co-Cr and gold alloy had mild to moderate cytotoxicity and pure copper had severe cytotoxicity. Generally, L929 cells were more sensitive to toxic substances than CV1 cells. The application of human gingival fibroblast to the agar overlay method seemed not to be proper.