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콘크리트의 전과정 평가를 위한 기준콘크리트 선정방법 제안 연구
최원영,태성호,노승준 대한건축학회 2016 대한건축학회논문집 Vol.32 No.12
The purpose of this study is to suggest baseline concrete selection method for environmental impact assessment of concrete as part of study on the development of concrete life cycle assessment system. For this purpose, environmental impact was assessed for 6 environmental impact categories including Global Warming Potential(GWP), Abiotic Depletion Potential(ADP), Ozone Depletion Potential(ODP), Acidification Potential(AP), Eutrophication Potential(EP) and Photochemical Oxidant Creation Potential(POCP) using mix design DB used in concrete field. Furthermore, Correlation of baseline concrete has been analyzed by the results with Average, High rank 20% and Mode of environmental impact assessment of concrete. As a result, Baseline concrete Selection method using Mode is judged to be the most proper method at present. Through the analysis of environmental impact of baseline concrete, it is possible to use the indicator as baseline data when environmental friendly concrete assessment system is developed.
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Taxonomic review of the family Ibaliidae (Cynipoidea: Hymenoptera) from Korea
최원영,이종욱,서경인 한국곤충학회 2013 Entomological Research Vol.43 No.3
The family Ibaliidae of the order Hymenoptera in Korea is reviewed. Previously, only one species, Ibalia takachihoi has been recorded in the Korean fauna. In this study, we report three ibaliid species, Ibalia (Ibalia) leucospoides leucospoides, Ibalia (Tremibalia) japonica and Ibalia (Tremibalia) ornata, new to Korean fauna. A key to Korean ibaliid species, redescriptions and illustrations of diagnostic characters are given.
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최원영,김상수,구본일,최민규,박홍규,김영두,이규성,김정곤 한국국제농업개발학회 2008 韓國國際農業開發學會誌 Vol.20 No.3
This study was conducted to examine the appropriate transplanting date of the top-quality rice variety, Unkwangbyeo, in Honam plain area. The results obtained from 2006 to 2007 in Iksan are as follows. The number of panicle per m2 increased as the transplanting date became late and the number of grain per m2 was the highest in the plot of which the transplanting date was June 15. Percent ripened grain increased as the transplanting date became late until June 15, however, it decreased in the plot of which the transplanting date was June 30. Imperfect grain increased as the transplanting date became early due to the occurrence of immature rice and cracked rice. Protein content increased as the transplanting date became late, but didn't show statistical significance. Toyo texture increased as the transplanting date became late. Rice yield and the head rice yield increased as the transplanting date became late until June 15, however, they decreased in the plot of which the transplanting date was June 30. Even though the rice price was high in early transplanting cultivation, gross profit was the highest in June 15 transplanting since the rice yield increased as the transplanting date became late until June 15. Considering the yield, rice quality and profit, the most appropriate transplanting date of Unkwangbyeo in Honam plain area is the middle of June.
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자포니카 초다수성벼의 최대수량을 위한 재식밀도 및 질소시비량
최원영,유진희,김택겸,양창휴,백남현,김 선,이상복,김시주 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
우리나라는 1970년대 초 통일벼 생산과 더불어 쌀의 자급자족이 이루어지면서 쌀 산업은 매우 안정적으로 유지되어 오고 있다. 그러나 최근 우리나라 매년 의무 수입량이 늘어나면서 중저가 시장을 겨냥한 생산비 절감과 소비처 확대 방안이 시급한 과제로 대두되고 있다. 이에 국립식량과학원에서 육성한 자포니카 초다수 성 “한마음”벼의 최대수량을 위한 재식밀도 및 질소시비량을 구명하고자 시험을 수행한 결과를 요약하면 다음과 같다. 가. 출수기는 8월 14일로 재식밀도 및 질소시비량간에 차이가 없었다. 나. 출수기 벼 생육을 보면 질소시비량이 많을수록 경수는 많았으며, 엽질소 및 엽색은 N11㎏/10a 보다 N14.5㎏/10a 에서는 짙었으 나 그 이상에서는 비슷하였다. 지상부건물중과 엽면적은 질소시비량이 많을수록 많았다. 다. 질소시비량이 많을수록 도복지수가 높아 도복은 N18㎏/10a에서 1, N21.5㎏/10a에서 2 정도 발생되었다. 재식밀도간에는 재 식밀도가 높을수록 도복지수가 높아 도복 발생이 심했다. 라. 쌀수량은 N18㎏/10a까지 질소시비량이 많을수 록 증가하다가 N21.5㎏/10a에서는 감소하였으며, 재식밀도간에는 90>70>50주/3.3㎡ 순으로 많아, 최고수량은 N18㎏/10a에서 재식밀도는 90주/3.3M2 이었다. 이상의 결과로 볼 때, 자포니카 초다수성 “한마음”벼의 최대수 량을 위한 적정 재배법은 질소시비량 18kg/10a에 재식밀도 90주/3.3m2 이었다.
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Establishment of Patient-Derived Organoids Using Ascitic or Pleural Fluid from Cancer Patients
최원영,김윤희,우상명,유예빈,이미림,이우진,천정원,심성훈,채희정,심효은,이근석,공선영 대한암학회 2023 Cancer Research and Treatment Vol.55 No.4
Purpose Patient-derived tumor cells can be a powerful resource for studying pathophysiological mechanisms and developing robust strategies for precision medicine. However, establishing organoids from patient-derived cells is challenging because of limited access to tissue specimens. Therefore, we aimed to establish organoids from malignant ascites and pleural effusions. Materials and Methods Ascitic or pleural fluid from pancreatic, gastric, and breast cancer patients was collected and concentrated to culture tumor cells ex vivo. Organoids were considered to be successfully cultured when maintained for five or more passages. Immunohistochemical staining was performed to compare the molecular features, and drug sensitivity was assayed to analyze the clinical responses of original patients. Results We collected 70 fluid samples from 58 patients (pancreatic cancer, n=39; gastric cancer, n=21; and breast cancer, n=10). The overall success rate was 40%; however, it differed with types of malignancy, with pancreatic, gastric, and breast cancers showing 48.7%, 33.3%, and 20%, respectively. Cytopathological results significantly differed between successful and failed cases (p=0.014). Immunohistochemical staining of breast cancer organoids showed molecular features identical to those of tumor tissues. In drug sensitivity assays, pancreatic cancer organoids recapitulated the clinical responses of the original patients. Conclusion Tumor organoids established from malignant ascites or pleural effusion of pancreatic, gastric, and breast cancers reflect the molecular characteristics and drug sensitivity profiles. Our organoid platform could be used as a testbed for patients with pleural and peritoneal metastases to guide precision oncology and drug discovery.
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