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DMBA도포가 HAMSTER 협낭상피의 LANGERHANS 세포에 미치는 영향에 관한 실험적 연구
유지호(Ji Ho Yu),이의웅(Eui Wung Lee) 대한구강악안면외과학회 1986 대한구강악안면외과학회지 Vol.12 No.2
The purpose of this study was to investigate the distribution of Langerhans cells on Hamster buccal pouch painted with DMBA (9,10 Dimethyl-1.2-benzanthracene). Golden Hamsters -6week old- were used in this experimental study and devided into control and experimental groups. Experimental groups were painted with 0.5% DMBA in heavy mineral oil on right buccal pouch three times weekly. The animals were sacrificed at every 6. 8. 10. 12. 14. 16th week and excised buccal mucosa for microscopic examination. All specimen stained with Hematoxylin-Eosin and PAP method, and examined by light microscope. The obtained results from this study were as follows. 1. In H-E stain, hyperkeratosis, papillomatous growth, dysplasia, carcinoma in situ, and inflammatory cells were observed in experimental groups. 2. In PAP stain, Langerhans cells were not observed under the submucosa and mucosa of control group and the mucosa of experimental groups. 3. At the early stage of dysplasia in 6th week, Langerhans cells were observed around the dysplasia and markedly increased in 8th week, but slighty decreased in 10 and 12th week. 4. During the formation of dysplasia, Langerhans cells were observed under the submucosa (average no. 5-10), especially aggregated around the blood vessels in cellular dysplastic area. 5. After the formation of carcinoma in situ, Langerhans cells were observed more frequently under the normal submucosa than the peripheral area of cancer tissue and it showed markedly decreasing tendency under the normal submucosa in 16th week and was not observed around the carcinoma in situ.
강영미,유지호,조용애,류성숙,조정구,성영희,Kang, Young-Mi,Yu, Ji-Ho,Cho, Yong-Ae,Ryoo, Sung-Suk,Cho, Jeong-Koo,Sung, Young-Hee 한국중환자간호학회 2008 중환자간호학회지 Vol.1 No.1
Purpose: Purpose of this study was to analyze the nursing focuses for standardization of ICU nursing records. Methods: The data were collected from 1,000days'nursing records of 197 ICU patients at a tertiary hospital in Seoul. Nursing focuses were unified at the consulting group meeting and they were cross-mapped with the NANDA nursing diagnoses. Results: The 62 nursing focuses in 7 NANDA categories were extracted from nursing record. Among total nursing focuses 41 correspond to the NANDA nursing diagnoses and 21 were added to ICU nursing focuses. The 10 most frequently used nursing focuses are 'Ineffective airway clearance', 'Impaired gas exchange', 'Ineffective tissue perfusion: cardiopulmonary', 'Ineffective breathing pattern', 'Ineffective tissue perfusion: renal', 'Ineffective infant feeding pattern', 'Risk for impaired skin integrity', 'Hyperthermia', 'Impaired skin integrity', 'Decreased cardiac output', Conclusion: Nursing focuses list of ICU was extracted from the result of this study. These nursing focuses might form a framework for development of research-based assessment guideline and care plans for ICU patients through standardization of nursing records.
이현직(Lee, Hyun Jik),유지호(Ru, Ji Ho),유영걸(Yu, Young Geol) 대한공간정보학회 2013 대한공간정보학회지 Vol.21 No.3
본 연구에서는 산림 바이오매스와 식생지수의 상관성을 분석하기 위해 현장조사 자료, 위성영상과 LiDAR 자료를 이용하여 산정된 산림 바이오매스 분포도를 기준으로 고해상도 KOMPSAT-2 영상과 LANDSAT 영상을 이용하여 식생지수인 SR, NDVI, SAVI, LAI를 계산한 값과 비교하였다. 분석결과, 고해상도 KOMPSAT-2 영상의 식생지수가 LANDSAT 영상의 식생지수보다 침엽수의 상관성이 더 높게 나타났으며 활엽수의 경우는 LANDSAT 영상의 식생지수가 높은 상관성을 보였다. 식생지수 중에는 NDVI 값이 다른 지수에 비해 상관성이 높게 나타났다. 또한 STSAT-3 위성의 소형영상분광기(Compact Imaging Spectrometer, COMIS)와 유사 센서인 EO-1 위성의 Hyperion 영상을 이용하여 하이퍼스펙트럴 영상을 분석하고 바이오매스와 상관성이 상대적으로 높은 식생지수를 동일한 GSD 조건의 LANDSAT 위성의 식생지수와 비교하고 하이퍼스펙트럴 영상의 임상 추출에 대한 활용가능성을 분석하였다. This study calculated vegetation indexes such as SR, NDVI, SAVI, and LAI to figure out correlations regarding vegetation by using high resolution KOMPSAT-2 images and LANDSAT images based on the forest biomass distribution map that utilized field survey data, satellite images and LiDAR data and then analyzed correlations between their values and forest biomass. The analysis results reveal that the vegetation indexes of high resolution KOMPSAT-2 images had higher correlations than those of LANDSAT images and that NDVI recorded high correlations among the vegetation indexes. In addition, the study analyzed the characteristics of hyperspectral images by using the COMIS of STSAT-3 and Hyperion images of a similar sensor, EO-1, and further the usability of biomass estimation in hyperspectral images by comparing vegetation index, which had relatively high correlations with biomass, with the vegetation indexes of LANDSAT with the same GSD conditions.
이현직(Lee Hyun Jik),유지호(Ru Ji Ho),유영걸(Yu Young Geol) 대한공간정보학회 2010 대한공간정보학회지 Vol.18 No.1
최근 고해상도 위성영상을 이용한 지형공간정보 제작에 관한 다양한 연구와 활용이 이루어지고 있다. 그러나 주제도는 중ㆍ저해상도 위성영상 기반으로 제작이 이루어져 위치정확도 및 표현되는 주제 정보의 정밀도가 낮다. 본 연구에서는 기존의 중ㆍ저해상도 위성영상 기반의 제작 방식에서 GSD 1m급 이하 고해상도 위성영상 기반의 자동화 제작 방식으로의 전환과 1/5,000 이하의 중ㆍ대축척의 주제정보 추출 및 정확도 분석을 수행하여, 고해상도 위성영상을 이용한 정밀 주제도 제작 방안을 제시하고자 한다. 고해상도 위성영상을 이용한 주제 정보의 자동추출을 위해 7개 분류항목에 대하여 객체지향분류를 수행하였으며, 분류결과는 기존의 중분류 토지피복도와 1/1000 수치지도를 이용하여 비교분석을 수행하였다. In recent years, there have been diverse researches and utilizations of creating geo-spatial information with high resolution satellite images. However thematic maps made with middle or low resolution satellite images have low location accuracy and precision of thematic information. This study set out to propose a method of making a precision thematic map with high resolution satellite images by examining the conversion from the conventional method based on middle or low resolution satellite images to the automatic method based on high resolution satellite images of GSD 1m or lower, extracting thematic information of middle or large scale of 1/5,000 or lower, and analyzing its accuracy. Seven classification classes were categorized according to the object-oriented classification in order to automatically extract thematic information with high resolution satellite images. And the classification results were compared and analyzed with the old middle scale land cover map and 1/1000 digital map.