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문태용,이영준,정경화,허진도,설미영,권운정,Moon, Tae-Yong,Lee, Young-Joon,Jung, Kyung-Hwa,Hur, Jin-Do,Sol, Mi-Young,Kwon, Woon-Jung 대한근골격종양학회 2003 대한골관절종양학회지 Vol.9 No.2
목적: 골격을 침해하는 원발성 악성종양으로는 골육종이나 연골육종 같은 간엽성육종과 유윙육종이나 림프종 같은 소원형세포성육종으로 나눈다. 골격육종을 진단하기 위해 관상골 육종은 MR검사를 편평골 육종은 CT검사를 주로 이용한다. MR과 CT는 공히 골파괴병소와 연조직종괴를 잘 나타내지만 무기질침착은 MR에서 식별되기 어렵다. 이에 본저자들은 관상골 MR과 편평골 CT검사의 골파괴 소견으로 간엽성육종과 소원형세포성육종을 감별하고자 하였다. 대상 및 방법: 수술적 조직생검술에 의한 병리조직학적으로 진단되고 관상골 MR 또는 편평골 CT검사를 시행했던 간엽성육종 28례와 소원형세포성육종 26례를 대상으로 하였다. 관상골 MR검사 26례와 편평골CT검사 28례에서 골파괴 병소 소견을 각각 편심성과 중심성으로 나누어 비교 분석하였다. 결과: 관상골 MR검사에서 간엽성육종 16례중 12례(75.0%)가 편심성 골파괴 소견이였고 소원형세포육종 10례는 전례(100.0%)가 중심성 골파괴 소견이었다(p>.01). 편평골 CT검사에서 간엽성육종 12례중 10례(83.3%)에서 편심성 골파괴 소견이었고 소원형세포성육종 16례중 13례(81.3%)가 중심성 골파괴 소견을 보였다(p>.01). 결론: 관상골 MR검사든 편평골 CT검사든 골파괴 양상을 중심성과 편심성으로 나누는 방사선학적 소견은 간엽성육종과 소원형세포성육종을 감별 진단하는데 도움이 되는 소견이었다. Purpose: Primary malignant bone tumors are classified with mesenchymal sarcomas (MS) such as osteosarcoma and chondrosarcoma and small round cell sarcomas (SRS) such as Ewing's sarcoma and lymphoma. Radiological examinations for skeletal sarcoma were using MR scan in tubular bone sarcomas and CT scan in flat bone sarcomas recently. Both MR and CT scans show some findings of bone destruction and soft tissue mass but MR scans don't reveal a finding with mineralization relatively. So we investigated bone destructive pattern of skeletal sarcomas on both MR and CT scans for differentiation of MS and SRS. Materials and Methods: There are 28 MS and 26 SRS examined with MR or CT scans. The findings according to bone destructive pattern were divided to eccentric and concentric in 26 cases of tubular bone sarcomas with MR scan and 28 cases of flat bone sarcomas with CT scan. Results: MR images revealed eccentric destruction in 12 cases of 16 MS and concentric in all cases of 10 SRS (p>.01). CT images showed eccentric destruction in 10 cases of 12 MS and concentric bone destruction in 13 cases of 16 SRS (p>.01) Conclusion: The findings divided to eccentric and concentric bone destructive patterns were useful for differential diagnosis of MS from SRS on both MR and CT scans.
임진강 유역 오염물질 총량관리를 위한 유량-수질 자료의 통계분석
조용철 ( Yong-chul Cho ),최현미 ( Hyeon-mi Choi ),이영준 ( Young Joon Lee ),류인구 ( Ingu Ryu ),이명구 ( Myung-gu Lee ),구동회 ( Donghoi Gu ),최경완 ( Kyungwan Choi ),유순주 ( Soonju Yu ) 한국환경영향평가학회 2018 환경영향평가 Vol.27 No.4
본 연구의 목적은 임진강 수질오염총량관리제도를 위한 단위유역의 2012년 1월부터 2016년 12월까지 유량과 수질자료를 통계분석기법에 이용하여 수질특성을 평가하는 것이다. 유량과 수질은 평균 8일 간격으로 측정하였으며 11개 항목을 상관분석, 주성분 분석, 요인분석, 군집분석에 사용하였다. 군집분석의 결과 공간변화에 따라 자연형 하천, 도시형 하천, 점오염원 영향이 큰 지점 등으로 3개의 그룹으로 분류되었으며, 오염원의 종류와 수질 유사성이 군집 분류에 영향을 미치는 것으로 나타났다. 일원 분산분석과 사후검정을 이용하여 군집간의 평균사이에는 통계적으로 유의한 수준의 차이가 있는 것으로 나타났다. 상관분석에서 COD<sub>Mn</sub>와 TOC의 상관계수가 0.951(p<0.01)로 상관성이 통계적으로 유의하게 높게 나타났다. 주성분 분석 결과 3개의 주성분으로 전체 수질특성의 72%를 설명할 수 있으며 요인분석에서 주요 요인은 EC, BOD<sub>5</sub>, COD<sub>Mn</sub>, TN, TP, TOC 항목으로 나타나 유기물과 영양염류 간접지표가 수질에 영향을 미치는 것으로 나타났다. 본 연구에서 요인점수를 다중 선형회귀분석에 적용하여 회귀 방정식을 제시하고 임진강 유역 수질관리에 유기물 및 영양염류 간접지표 항목의 관리가 중요하다고 판단된다. The purpose of this study was assessment the quality of water by using the statistical analysis technique of the Water flow and water quality from January 2012 to December 2016 at the unit basin for total pollutant load management system (TPLMS) in the Imjin River. Water flow and water quality were monitored at an average of 8 day intervals, 11 parameters were used for correlation analysis, principal component analysis (PCA), factor analysis (FA), and cluster analysis (CA). The Hierarchical CA was classified into three according to the change of space, such as natural rivers, urban rivers, point with large influence of point pollution source, it was found that the type of contamination source the similarity of water quality affected the classification of cluster. Using one-way analysis of variance (ANOVA) and post-hoc Analysis, there were statistically significant differences between mean values among the clusters. Correlation analysis showed the correlation coefficient between COD<sub>Mn</sub> and TOC was 0.951 (p<0.01) and the correlation was statistically significantly higher. According to the result PCA and FA, 3 principal components can explaining 72% of the total variations in water quality characteristics and main factor was EC, BOD<sub>5</sub>, COD<sub>Mn</sub>, TN, TP and TOC indirect indicators of organic matter and nutrients were influenced. This study presented the regression equation obtained by applying the factor scores to the multiple linear regression analysis and concluded that the management Indirect indicators of organic matter and nutrients is important for water quality management in the Imjin River basin.
이용석 ( Yong Seok Lee ),이영준 ( Young Joon Lee ),한창현 ( Chang Hyun Han ) 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.3
ObjectivesWe will provide basic information on bee venom clinical tests and aid the practical use of bee venom in such tests, through examination of RCT research related to bee venom that was reported domestically. MethodsWe collected 365 articles on Bee venom study result from the OASIS system using the Keyword ‘bee venom, apitoxin, apitherapy, bee sting’. The initially selected theses were primarily screened for clinical research. Out of these, case studies and non randomized controlled trial (non-RCT) were ruled out. As a result, 39 studies of randomized controlled trial (RCT) research were chosen as the subjects of study. ResultsRCT research related to bee venom was first presented in 2003, and 39 studies have been published until 2012. 18 studies were tests to confirm the effectiveness of bee venom, 7 studies were comparisons between SBV and BV, and 13 studies were comparisons with other types of treatment. Research conducted through appropriate randomization methods were 20 studies, and inappropriate randomization methods were used in 19 studies. In therms of Jadad score, 12 studies received 4~5 points, 15 studies received 1~3 points, and 12 studies received zero point. ConclusionsIn order to assure good quality RCT research, appropriate guidelines should be provided, and proper evaluation standards should be established. In-depth study is needed concerning the difference of responses to treatment according to the types of treatment received. A standardization of treatment should be reached as a result. (J Korean Med Rehab 2013;23(3):87-106)
매선 요법의 국내외 논문 분석 - 임상 논문 중심으로 -
이용석,한창현,이영준,Lee, Yong Seok,Han, Chang Hyun,Lee, Young Joon 대한예방한의학회 2016 대한예방한의학회지 Vol.20 No.3
Objectives : The focus of the review was laid on differences in research pertaining to thread embedding acupuncture between domestic and foreign journals. Methods : We collected 53 Korean articles on thread embedding acupuncture study from 4 Korean article searching sites, and 80 foreign articles from Pubmed. We analyzed the number of the theses according to the publication year, study method, journal, and subject. Results : A total number of 134 thread embedding acupuncture articles were categorized as 100 clinical trials, 14 experimental papers, and 19 literature reviews. Of the collected clinical trials, 55 were case studies, 6 were CCTs and 39 were RCTs. The domestic clinical trials were comprised of 36 case studies, 1 CCT, and 2 RCTs, and foreign clinical trials were comprised of 19 case studies, 5 CCTs, and 37 RCTs. Although only 12 of the 39 domestic clinical trials exclusively treated thread embedding acupuncture to the experimental group, 38 out of 61 foreign clinical trials undertook thread embedding acupuncture as the sole treatment. While the 2 domestic RCTs research had no significant evidence that the experimental group was different from the control group, the experimental group demonstrated better responses than the control group in 31 of the 37 foreign RCT studies. Conclusions : Studies on thread embedding acupuncture are more intensively studied in the foreign field in comparison to the domestic field. Referring to the results from the foreign thread embedding acupuncture studies, domestic use of thread embedding acupuncture should be expanded. Also, more refined research needs to be conducted in the domestic field in order for the Koran medicine to lead the thread embedding acupuncture. This study is limited in that the literature search in the foreign journals were restricted.
대면적 상온 Indium Zinc Oxide 투명 도전막의 물성 특성 비교
정대영(DaeYoung-Joung),이영준(YoungJoon-Lee),박준용(Joon Yong-Park),이준신(Junsin-Yi) 한국표면공학회 2008 한국표면공학회지 Vol.41 No.1
An Indium Zinc Oxide(IZO) transparent conductive layer was deposited on a large size glass substrate by using magnetron dc sputtering method with varying a deposition temperature. As the deposition temperature decreased to a room temperature, the sheet resistance of IZO film increased. But this deposition temperature range is included in an applicable to a device. From a standpoint of the sheet resistance, the differences of the sheet resistance were not great and the uniformity of the layer was uniformed around 10%. Crystallization particles were shown on the surface of the layer as deposition temperature increased, but these particles were not shown on the surface of the layer as deposition temperature decreased to the room temperature. It didn't make a scrap of difference in a transmittance of varying deposition temperature. Therefore, it is concluded that IZO thin film manufactured by the room temperature deposition condition can be used as a large size transparent conductive layer of a liquid crystal display device.