췌장 선방세포암 1예

이화정,지준호,박승찬,박정철,최은정,서혜진,이원식,이정림,배병조,손경락,이경희 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Acinar cell carcinoma is a rare tumor that represents 1~2% of al1 pancreatic cancers. Clinical and radiologic findings are inconclusive in this disease Acinar cell carcinoma is characterized by rapid progression and early metastasis, which lead to its poor prognosis. A 41-year-o1d man was admitted to our hospital for abdominal pain. Abdominal computed tomography (CT) and positron emission tomography-computed tomography (PET-CT) showed a splenic mass, which was being invaded by a pancreatic tail mass and which had increased ^(18)F-fluorodeoxyglucose (FDG) uptake Primary radical distal pancreatectomy and splenectomy were performed. Pathologic findings revealed an acinar cell carcinoma of the Pancreas The patient underwent a total gastrectomy three months later because of gastric recurrence Four months later, multiple hepatic metastases were discovered, and the patient underwent a left hepatectomy During treatment with capecitabine, there was no evidence of tumor progression for 14 months. We report a case of metastatic pancreatic acinar cell carcinoma, which did not progress for an extended period while the patient was being treated with capecitabme.

원발성 후복막 점액낭샘암종 1예

지준호,이화정,박승찬,박정철,최은정,서혜진,이원식,이정림,배병조,손경락,이경희 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Primary retroperitoneal mucinous cystadenocarcinoma is a very rare malignancy, and little is known concerning its Pathogenesis, optimal treatment, and prognosis. A 29-year-o1d pregnant woman (21 weeks) Presented with abdominal discomfort CA 19-9, CA 125, and CEA were normal Abdominal CT scanning revealed a 19x15x13 cm retropentoneal tumor Exploratory laparotomy and tumor excision were performed. Mucinous retropentoneal implants were removed as completely as possible Histologically, the tumor showed focal areas of capsular invasion, but free resection margins The uterus and both ovaries were normal in appearance No adjuvant therapy was pursued. Six months later, Peritoneal and bilateral ovarian metastases were discovered. Hence, we report the details of this case of primary retroperitoneal mucinous Cystadeno-carcinoma and present a review of the literature.

파일럿 플랜트에 의한 음식물 찌꺼기 처리

최성우,류정숙,박정호,임찬섭,박승조 동아대학교 환경문제연구소 1998 硏究報告 Vol.21 No.1

In this study, using the extinctive composting apparatus, it took a day for the degradation of waste food with high temperature and aerobic condition. It was confirmed by the change of organic ratio, condensed water, and weight. Final production included rare organic ratio so that it was easy to degrade microorganism but it was not enough pH and salt for using compost. During reaction, condensed water was produced about 20 ℓ/day, the eighty percent of waste food was degraded by compositing reaction on the basis of weight, therefore, this means that it is go effective on the volume reduction.

피부색을 이용한 얼굴 특징 성분의 실시간 검출

최찬석,이정문 강원대학교 정보통신연구소 2004 정보통신논문지 Vol.8 No.-

Face region detection is a very important step in the face recognition process for real-time applications. This paper presents a method to detect a face region using skin color information in Y·Cb·Cr color space. We propose a simple and highly applicable method of extracting facial features in the selected region. capturing a still image by a PC camera, we search a skin-like region using skin color filtering. Then we decide the face region by cropping the skin-like region. Finally, we extract each facial feature(eye, nose, mouth, and eyebrows) from the cropped region using histogram projection methods.

부산시 일부지역의 산성비조사 (Ⅰ)

최금찬,박출재,박정호,임경택 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.1

Acid Rain has been investigated in Pusan Area. The range of pH indicated at 1st point to 4.05-7.2, 2nd point to 4.87-7.1, 3rd point 5.0-7.0 individually. Average pH value was decreased during small rainfall, the rainfall amount was directly related to pH in every points. Frequency ratio of pH below 5.6 in each point were resulted to 75% at 1st point, 73% at 2nd point, 42% 3rd point.

디젤자동차배출입자의 발생원동정 및 배출특성에 관한 연구

최금찬,조정구 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.2

The purpose of this study is to characterize the emission of diesel vehicles. It had been measured the particle size distribution, particle concentrations, and ionic components through the emission for diesel vehicles. The particle emission of diesel vehicles may be changed to emission partterns accoring to fuel, combustion conditions, and ionic components.

가우시안 빔 프로파일의 CPT를 위한 비선형 주사속도변조

최덕규,한찬호,정영헌 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)

A scan velocity modulation(SVM) technique has been widely used for compensating the deterioration of picture quality due to the beam profile effect of the color picture tube(CPT). In conventional SVM system the so-called linear SVM method has been employed, whose modulation velocity is linearly proportional to the variation in the video signal amplitude. However, the effect of picture quality improvement is irregular with video signal amplitude in the linear SVM. In this paper we report a theoretical analysis of the SVM effect on the spatial brightness distribution of CPT according to the variations in luminance signal amplitude and differentiation circuit characteristic. We also propose a nonlinear SVM method based on the results of the theoretical analysis for optimum picture quality improvements. In computer simulation we confirmed uniform improvements in picture quality by the SVM of nonlinear amplitude transfer characteristic.

수상관의 밝기 및 해상도를 고려한 기준 백색 설정

최덕규,한찬호,정영헌 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(C)

Reference white in color television receiver can be achieved by adjusting the RGB gun current ratio and it is necessary to provide additional gain ratio adjustment for the RGB video signal. Generally, the gun current density profile has a Gaussian distribution and the gain-bandwith product of RGB channel amplifier is constant. Therefore brightness and spatial resolution are changed with variations in reference white of receiver. In this paper, the effect of RGB gun current and channel gain ratios on brightness and resolution of CPT is analyzed. Brightness is increased with the color temperature of reference white because of Holmholtz-Kohlrausch effect. The change in light output is more abrupt and spatial resolution is improved with unity current ratio. For more bright and improved resolution we also present the range of color temperature of reference white for P22 phosphors.

의류 중의 미생물에 대한 소비자의 지식과 세탁습관 실태조사 분석

최해운,정찬진,박명자 服飾文化學會 2002 服飾文化硏究 Vol.10 No.6

Microorganisms living in clothing cause damage to fabric as well as unhygienic conditions with unpleasant odor for wearers. Removal or growth of microorganisms are affected by the conditions during washing and storage. The purpose of this research was to study the consumer's knowledge and habits in laundering with respect to microorganisms in clothing. For survey method, questionnaires were administered to 580 housewives, age of 20~60s living in Seoul. Employing 479 respondents, the data were analyzed by using deseriptive statistics. The results are as follows; The level of knowledge about microorganisms of clothing was high in general, but wasn't expert level. Many people had experienced damages of textiles, clothing and unpleasant odor due to microorganisms. Fabric softeners and bleaches were rarely used for disinfection but usually used for antistatic. whitening or removal of stains. There was no relationship between laundering habits the knowledge of microorganism, and experience of clothing damage by microorganism

보청천 유역 지하수 함양율 산정기법 비교분석

최정찬 釜慶大學校 1999 釜慶大學校 論文集 Vol.4 No.1

The purpose of this study is to evaluate reasonable groundwater recharge ratio by comparing four estimation methods ofr water-table aquifer such as water balance method, baseflow separation method, method of groundwater-level depletion ratio, and method of groundwater-level fluctuation data. The Bocheong-Cheon basin located in the Province of Chungchongbuk-Do, is selected for study because data such as precipitation, evaporation, groundwater level, river discharge, etc., are available since 1983. As a result of estimation, the value of groundwater recharge ratio is varied between 7.2% and 24.6%. Therefore, for estimating exact value of groundwater recharge ratio, it is necessary to collect accurate data and evaluate the groundwater recharge ratio calculated from the area where hydrogeological condition is simple and artificial recharge and discharge of groundwater is minimized.