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이응준 ( Eung Joon Lee ),김영미 ( Young Mee Kim ),조혜제 ( Hye Jae Cho ) 대한임상검사과학회 1998 대한임상검사과학회지(KJCLS) Vol.30 No.3
This study was performed to examine the relative proportion of positive response to both the sputum cytology and the bronchial washing and brushing cytology, and the distribution of age and sex for 91 patients whose illness was histologically diagnosed as lung cancer in the Sanggye Paik hospital. The results obtained from this study were summarized as follows; 1. The group with the age between 60`` sand 70`` s accounted for 67% of total of 91 patients suffering from this disease, proving its high vulnerability. The ratio of male to female patietns was 2:1. 2. According to the classification of histological diagnosis, 41 patients (45%) belonged to squamous cell carcinoma, 28 (30.8%) to adenocarcinoma, 11 (12.1%) to small cell carcinoma, and 3 (3.3%) to undifferentiated large cell carcinoma. 3. The rescreening of 34 examples diagnosed as malignancy and suitable for cytologic diagnosis out of 44 cases revealed that 30 examples correspond well with diagnosis, with the type accuracy rate of cytology being as high as 88%. 4. The detection rate of malignancy in 40 patients undergone both the sputum cytology and the bronchial washing and brushing cytology was 6 (15%) in the sputum cytology and 15 (37.5%) in the bronchial washing and brushing respectively, with the latter being 2.5 times higher in the rate than in the former. From this study, conclusively, small cell carcinoma could be confused with degenerated columnar epithelial cell derived from malignant cells because the cell in small cell carcinoma swells by bronchial washing fluid during bronchial washing and brushing cytology. Therefore, to enhance the detection rate of malignancy, these findings suggest screening should be carried out with this of mind.
여윔증상 넙치 및 사육수 내 검출된 점액포자충(Enteromyxum leei and Parvicapsula anisocaudata)의 정량적 분석
이영준 ( Young Juhn Lee ),전려진 ( Lyu Jin Jun ),김예지 ( Ye Ji Kim ),한지은 ( Ji Eun Han ),이응준 ( Eung Jun Lee ),정준범 ( Joon Bum Jeong ) 한국어병학회 2021 한국어병학회지 Vol.34 No.2
Quantitative analysis of myxosporean parasites (Enteromyxum leei and Parvicapsula anisocaudata) were performed using real-time PCR on the internal organs (head kidney, body kidney, intestine, spleen, brain, liver, heart, muscle, blood, and eye) of emaciated Paralichthys olivaceus from farm-A. The highest DNA copy number of E. leei was shown in the intestine (1.3 × 10<sup>8</sup> copies/mg tissue) of emaciatied P. olivaceus and DNA copy number in the other internal organs (1.3 × 10<sup>3</sup>~4.6 × 10<sup>5</sup> copies/mg tissue) showed lower than in intestine. From the result of real-time PCR for P. anisocaudata, it was considered mildly infected, due to the low DNA copy numbers of the head kidney (1.3 × 10<sup>3</sup> copies/mg tissue) and body kidney (9.1 × 10<sup>3</sup> copies/mg tissue). In order to investigate whether myxosporean parasites can be detected in a non-invasive way, quantitative analysis of E. leei and P. anisocaudata from rearing water of three farms were performed by real-time PCR. The DNA copy number of E. leei from rearing water of farm-A and farm-B were 8 × 104 and 5 × 10<sup>5</sup> copies/L, respectively. However, it was not detected in farm-C. For P. anisocaudata from rearing water, farm-A, farm-B and farm-C showed 0, 2.0 × 10<sup>6</sup> and 5.1 × 10<sup>6</sup> copies/L, respectively.
원격탐사 지수 영상으로부터 도시 지역 탐지를 위한 임계점 평가에 관한 연구: 대구광역시를 사례로
정윤재 ( Yun-jae Choung ),이응준 ( Eung-joon Lee ),조명희 ( Myung-hee Jo ) 한국지리정보학회 2019 한국지리정보학회지 Vol.22 No.1
지구관측 위성영상을 활용한 도시지역 매핑 작업은 도시지역의 팽창 및 도시발전의 관측을 위해 매우 중요하다. 본 연구에서는 대구광역시를 촬영한 Landsat-8 위성영상의 분광밴드를 이용하여 제작한 두 원격탐사 지수 영상(정규 건축물 지수(NDBI) 영상 및 도시 지수 (UI) 영상) 으로부터 도시지역을 탐지하기 위한 임계점 평가에 관한 연구를 다음과 같이 진행하였다. 우선, Landsat-8 영상의 분광밴드를 이용하여 NDBI 영상과 UI 영상을 각각 제작한다. 그리고 다양한 임계점(-0.4, -0.2 및 0)을 NDBI 및 UI 영상에 적용하여 도시지역을 탐지하고, 탐지된 도시지역의 정확도를 산출한다. 본 연구를 통해 진행한 실험결과를 분석한 결과, NDBI 영상에서는 임계점으로 -0.2를 적용시켰을 때 탐지된 도시지역의 정확도(88%)가 가장 높았고, UI 영상에서는 임계점으로 -0.4를 적용시켰을 때 탐지된 도시지역의 정확도(88%)가 가장 높았다. 또한, 일부 지역에서는 나지가 도시지역으로 오분류 되었으며, 고층 아파트 지역이 비도시 지역으로 오분류 되었다. 추후 연구에서는 위성영상에서 오분류를 줄이고 다양한 도시지역 객체를 추출할 수 있는 개선된 방법을 제안하도록 한다. 또한 다중시기 위성영상에서 탐지된 도시지역을 이용하여 도시 팽창 패턴을 분석하는 추후 연구도 수행할 계획이다. Mapping urban areas using the earth observation satellites is useful for monitoring urban expansions and measuring urban developments. In this research, the different thresholds for detecting the urban areas separately from the remote-sensing index images (normalized-difference built-up index(NDBI) and urban index(UI) images) generated from the Landsat-8 image acquired in Daegu, South Korea were evaluated through the following steps: (1) the NDBI and UI images were separately generated from the given Landsat-8 image; (2) the different thresholds (-0.4, -0.2, and 0) for detecting the urban areas separately from the NDBI and UI images were evaluated; and (3) the accuracy of each detected urban area was assessed. The experiment results showed that the threshold -0.2 had the best performance for detecting the urban areas from the NDBI image, while the threshold -0.4 had the best performance for detecting the urban areas from the UI image. Some misclassification errors, however, occurred in the areas where the bare soil areas were classified into urban areas or where the high-rise apartments were classified into other areas. In the future research, a robust methodology for detecting urban areas, including the various types of urban features, with less misclassification errors will be proposed using the satellite images. In addition, research on analyzing the pattern of urban expansion will be carried out using the urban areas detected from the multi-temporal satellite images.