제 1형 신경섬유종증 환자에서 발생한 위장관 간질종양 1예

원경준,이준,변유미,조민근,한경택,김원,홍란,임성철,김경종,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2

Gastrointestinal stromal tumor (GIST) is the most common non-epithelial neoplasm arising in the gastrointestinal tract, but this tumor is rarely seen in association with type l neurofibromatosis (NFl) Generally, the majority of GISTs are isolated neoplasm and they are sporadically found in the stomach, but the GISTs in NFl patients are usually multiple and usually found in the small intestine. We report a case of multiple GISTs in the jejunum of a 63-year-old woman diagnosed as NFl accompanied by complication of gastrointestinal bleeding, In this case, Patient had multiple cafe-au lait spots and neurofibroma on skin and had freckling on axilla and groin, and then, we made a diagnosis of NFl. Gastrointestinal bleeding is controlled by resection of multiple GISTs. Generally, only 3-5% of all gastrointestinal bleeding comes from the small bowel. Causes of small intestinal bleeding are angiodysplasia, neoplasm, NSAIDs induced ulcer etc. but, If patients have NFl accompanied by complication of gastrointestinal bleeding, GISTs on small bowel must be considered.

구조적 분석으로부터 OMT로의 사상

장종표,방만원,방상원 木浦大學校 情報産業硏究所 1996 情報産業硏究誌 Vol.4 No.-

객체 지향 방법은 많은 장점을 가지고 있지만, 지금까지 발전시켜온 전통적인 방법을 버릴수 없다든지, 객체 지향 기법의 전문가가 많지 않기 때문에 성공의 보장도 확실하지 않는 이유들 때문에 시스템 개발에 쉽게 수용 하지 못하고 있다. 구조적 분석 방법을 객체 지향방법으로 변환하려는 노력이 많아지고 있지만 정형화된 방법은 없다. 본 논문에서는 전통적인 구조적 분석 모델로부터 객체 지향 모델로의 변환방법을 검토하고 구조적 분석 모델, 즉 자료흐름도,자료사전,개체관계도 모델로부터 객체지향의 대표적 모델인 OMT의 객체모델로의 사상에 대한 새로운 방법을 제안한다.

웨이브렛 계수의 공간적 유사성을 이용한 비디오 영상 압축

문종현,방만원 木浦大學校 應用科學硏究院 2001 應用科學硏究誌 Vol.1 No.-

This paper presents a wavelet-based compression and decompression algorithm using spatial similarities of video sequences. The simulation results show that the proposed algorithm provides high compression ratio with proper image quality. It also outperforms the previous Hilton's algorithm in an image quality, compression ratio and running time, leading to compression ratio less than 0.2bpp, PSNR of 32 dB and running time of 10ms for a standard video image.

강진만에서 미생물의 년 변화

박종천,오재영,정용욱,주현수,이원교,유춘만,이우범 國立 麗水大學校 환경문제硏究所 2001 環境硏究論文集 Vol.4 No.-

The biological surveys were performed at seven sites in the Gangjin bay from February, 1998 to November, 2001. In order to analysis of environmental variation, numbers of heterotrophic bacteria, general fungus and fecal coliforms were enumerated in each sample. The result showed that variation range of heterotrophic bacteria, general fungus, and fecal coliforms were 2.9 x 10^(3)~9.6 x 10^(3) CFU/ml, 17.2~80.1 CFU/ml, and 6.3~682.5 CFU/100ml for four tears(1988~2001), respectively. Density of heterotrophic bacteria and general fungus were gradually decreased for four tours, while fecal coliforms were suddenly increased. Specially, numbers of fecal colifoms were increased the more 100 times in 2001 than that 1998. We think that it was probably caused a little rainfall in February, 2001. There result suggests that ecosystem of Gangjin bay were mainly regulated by 2~3 factors, which were inflow of fresh water, salinity and variation of water temperature.

外傷性 肝臟破裂과 肝膽道出血患者의 肝動脈結柴에 依한 治療

孫鍾夏,咸泰元,林敏一,裵振善,韓萬靑 대한적십자사 1974 적십자병원지 Vol.1 No.1

성인형 당뇨병 환자에서 피부생검을 이용한 표피하 모세혈관 기저막 두께의 변화에 관한 연구

김원학,오금탁,김만우,장경식,채종구,조건국 朝鮮大學校 附設 醫學硏究所 1987 The Medical Journal of Chosun University Vol.12 No.1

Thickening and proliferation of capillary basement membrane is a generalized phenomenon in diabetes mellitus and has been described in many organs including heart, kidney, pancreas, retina etc. While such changes are specific, it is difficult to obtain specimens from those organs. We took the specimens from the medial surface of the thing of 33 diabetics and 4 healthy persons as controls by means of punch biopsy. The measurement carried out by normogram and electron microscopic technique. HbA_(1c) values were also measured simultaneously. 1. The HbA_(1c) values are higher in diabetics than in control group (p<0.01). 2. The subepidermal capillary basement membrane thickness of the diabetics : 30% of the 5 th decade population, 53.9% of the 6 rh decade population and 83.3% of the 7th decade population showed more rhan 3,000 A. Whereas all the controls showed below 3,000 A. 3. The subepidermal capillary basement membrane thickness did nor increase significantly with the duration of the disease. 4. In cases of high subepidermal capillary basement membrane thickness, HbA_(1c) showed significant increase. (p<0.01).

한국산 나비 目(Lepidoptera)의 발향린(Androconia)에 관한 주사전자현기경적 연구 III. 네발나비科

박원학,류성만,서경인,이종욱 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

한국산 네발나비과에 보고된 77종 중 북한산 12종과 채집하지 못한 21종을 제외한 44종, 670여 개체를 재료로 광학현미경으로 발향린의 유무 및 분포를 확인하였다. 이중 발향린이 관찰된 10종을 대상으로 주사전자현미경으로 그 형태를 비교 연구하였다. 1. 발향린이 관찰된 종은 Brentis ino(R.), Argyronome laodice (P.). A. ruslana (M.). Damora sagana (D.), argynnis paphia (L.), Childrena zenobia (L.), Speyeria aglaja (L.), Fabriciana pallescens (B.), F. adippe (L.), F. nerippe(c.et R. F.) 10종이다. 2. 발향린은 암컷에서는 관찰되지 않았고, 수컷이 앞날개 표면에서만 관찰되었으며, 시맥위에서만 분포한다. 3. 확인, 관찰된 10종의 발향린은 나발막(fimbriae), 경부(neck), 잎새(laminar), 자루병반(foot stalk) 등 발향린의 전형적인 모양을 나타내었으며, 동종내 개체간 변이는 관찰되지 않았다. 4. Argyronome laodice, A. ruslana, Damora sagana, argynnis paphia, Childrena zenobia, Fabriciana pallescens 등 6종에서는 2가지 형태의 발향린이 관찰되었다. 5. 본 연구에서 관찰한 10종은 Subfamily Argynninae아과의 Argynnini족에서만 관찰되었으며, 관찰된 발향린중 Type ⅠⅠ의 형태는 종간에 큰 차이점이 없었고, Type Ⅰ은 많은 형태적 차이를 보이므로 분류학적으로 중요한 형질이라 사료된다. this paper observed through microscope the existance and the distribution of the androconia of the 44 species Nymphalidae among 77 ones that have been reported in Korea, excluding 12 species in North Korea and 21 one's not collected ten species that were observed the androconia among those were chifely compared and studied through Scanning Electron Microscope. 1. The 10 species that observed androconia is Brentis ino(R.), Argyronome laodice (P.). A. ruslana (M.). Damora sagana (D.), Argynnis paphia (L.), Childrena zenobia (L.), Speyeria aglaja (L.), Fabriciana pallescens (B.), F. adippe (L.), F. nerippe(C. et R. F.) 2. The androconia was not found at the female, but only on the dorsal surface of male's fore wings. 3. The androconia of 10 species was not observed intraspecific seasonal variation and individual variation. It was appeared the androconia as general type of fimbriae, neck, laminar and foot stalk. 4. Two types(typeⅠ and Ⅱ) of androconia were observed at the species of Argyronome laodice, A. ruslana, Damora sagana, Argynnis paphia, Childrena zenobia, Fabriciana pallescens. 5. According to this study, the androconia of 10 species observed only Argynnini, subfamily Argynniae. The type Ⅱ of the androconia similar to between species but type Ⅰ was observed multitudes of morphological difference. These difference of type Ⅰ was very important taxonomical characters.

고속가공을 위한 검사시편에 관한 연구

정종윤,황영수,이춘만,정원지,고태조 한국공작기계학회 2003 한국생산제조학회지 Vol.12 No.4

The properties of a machine tool greatly affect machining quality since a machine tool has large variance in its features. Machine tool makers want to find best machining condition with the one that they have built. Machine builders need to develop test specimen since it helps finding characteristics of machine tools when the machining properties of the specimen are analyzed. This paper develops test specimen to identify features of the main spindle, the feeding device, and the frame of a machine tool. The specimen is machined with a high speed machine and the features of the machine are analyzed with test items. They are surface roughness, overshoot in axial movement, errors in circular movement, feeding with small movement, and compensational error. This work can improve usability for a machine tool in machining practice.

패턴 특징과 색상 특징을 이용한 내용기반 영상검색

박종현,박순영,방만원 木浦大學校 工業技術硏究所 1999 工業技術硏究誌 Vol.9 No.-

In this paper, we propose an efficient content-based image retrieval method using the color and wavelet based pattern features. The pattern features are extracted from the invariant moments of the high-pass band image through spatial-frequency analysis of wavelet transform and color features are extracted from color histograms of the global image. The proposed image retrieval method is called a pattern and color feature based query(PCBQ). Forward PCBQ and backward PCBQ perform similarity matching of cascade form using the pattern and color features. The first step matching is carried out to find the candidate images which are most similar to the query image using the pattern or color features. The second step matching is executed using the feature vectors for the accurate retrieval from the candidate images of the first step. Weighted PCBQ performs weighted similarity matching of parallel form using the pattern and color features. The experimental results show that the proposed retrieval systems yield more improved retrieval accuracy than the previous methods.

반복적 경두부 자기자극이 운동학습과 뇌 운동영역 활성화에 미치는 영향 : 예비연구

박지원,김종만,김연희 한국전문물리치료학회 2003 한국전문물리치료학회지 Vol.10 No.3