http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이제원,성시천,진소영,정영도,노재근 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-
A reusable and efficient photo-catalyst based on halloysites (HNTs) and La3+ ion-doped TiO2nanoparticles was prepared using a sol-gel process and a sonochemical method for decomposingorganic dyes. As a support, the HNTs increased the adsorption efficiency of substrates, improving thephotocatalytic activity of TiO2 nanoparticles by3 times. The La3+ ion doping of TiO2 decreased thebandgap from 3.25 eV to 3.01 eV, expanding the spectral response to the visible region and enhancing thephotocatalytic activity under the sunlight by 1.5 times. Through the integration of the halloysite supportand the La3+ ion doping of TiO2, the synergistic enhancement of photocatalytic activity was observed andsystematically investigated using XRD, Raman spectroscopy, FT-IR, FE-SEM, EDX-TEM, and zeta potential. In this research, we used Rhodamine B molecules as a model pollutant. During the decomposing process,the HNTs enhanced the local dye concentration nearby the photo-catalyst through the electrostaticinteraction, thereby boosting the photocatalytic activity by3 times. Additionally, the catalyst can beseparated by simple centrifugation and reused at leastfive recycles without any activity decrease. Thehalloysite support, the La3+ ion doping of TiO2 and their simple synthesis approach could provide apractical tool for environmental purification in wastewater using sunlight.
이제원,최우익,양승준,진상찬,주명돈 대한응급의학회 2009 대한응급의학회지 Vol.20 No.1
Purpose: This study was undertaken to evaluate the prognostic factors for patients suffering with alcoholic ketoacidosis. Methods: We retrospectively evaluated and categorized 55 alcoholic ketoacidosis patients into two groups: the survivors (group 1) and non-survivors (group 2). We compared the general characteristics and the laboratory results, including the arterial blood gas analysis (ABGA) and the complications of the two groups, and we assessed the severity of the between the two groups by using the Acute Physiology and Chronic Health Evaluation (APACHE) Ⅱ score and the Simplified Acute Physiology Score (SAPS). Results: There were 50 male patients (90%) and 5 female patients (10%). On laboratory testing, the levels of arterial HCO₃ -, total protein, albumin and serum glucose were significantly lower in group 2 than that in group 1. The levels of total bilirubin and BUN (blood urea nitrogen), the PT (prothrombin time) and the aPTT (activated partial thromboplastin time) were significantly higher in group 2 than that in group 1. Serial ABGA follow-up showed that unimproved ABGA results meant a poor prognosis. The SAPS was significantly higher for group 2 than that for group 1 (p<0.001) but the APACHE Ⅱ was not significantly different. The incidence of hepatic encephalopathy, hepatic failure and acute respiratory distress syndrome (ARDS) were higher in group 2 than that in group 1. The total bilirubin, arterial HCO₃ - and albumin were found to be significant prognostic factors by logistic regression analysis. Conclusion: The poor prognostic factors for alcoholic ketoacidosis were low levels of arterial HCO₃ -, impaired hepatic function, the incidence of ARDS and unimproved ABGA results.
우황청심원 관련 최근 연구 동향 : 국내 논문에 대한 고찰
이제원,백경민,백영두,임은영,장우석,전우현,정인권,Lee, Je-Won,Baek, Kyung-Min,Baek, Young-Doo,Im, Eun-Young,Chang, Woo-Seok,Cheon, Woo-Hyun,Chung, In-Kwon 대한한방내과학회 2010 大韓韓方內科學會誌 Vol.31 No.4
Objectives : Woohwangchungsim-won has been used for acute diseases such as cerebrovascular disease (stroke), heart disease. The aim of this study was to determine the effects, significance & necessity of Woohwangchungsim-won in acute stages of these disease by reviewing Korean articles about Woohwangchungsim-won. Methods : Article searches were performed on 8 major Korean web article search engine from January 1980 to August 2010. There were no restrictions on the types of publication, including grey articles. Results : Forty-three articles were included. Twenty one were efficacy tests, thirteen were comparative efficacy tests, eight were toxicity tests, and one was new method development. Eighteen articles were multicenter studies and twenty five were single center studies. Thirty two articles were animal testing, only ten articles were clinical articles. Thirty seven articles presented the composition and quantity of Woohwangchungsim-won, but six did not. Conclusions : The results of Korean articles about Woohwangchungsim-won can not strongly support the effects, significance & necessity of Woohwangchungsim-won. More rigorous studies are required for determination of the effects of Woohwangchungsim-won.
Navigation Signals Based on Orthogonal Tiered Polyphase Code
이제원,김정빈,김갑진,송기원,안재민 사단법인 항법시스템학회 2015 Journal of Positioning, Navigation, and Timing Vol.4 No.3
A navigation signal based on orthogonal tiered polyphase code was proposed. For the proposed signal, tiered polyphase code was used as the code of a pilot channel. Tiered polyphase code is a complex number type code, and thus the pilot channel and data channel were separated using the Walsh code which makes the correlation between different codes become 0. The results of the simulation indicated that the correlation characteristics and signal acquisition performance of the proposed signal were identical to those of tiered polyphase code, and that the disadvantage of tiered polyphase code could be supplemented through a data channel in terms of signal tracking.
한국과 중국 소비자들의 소셜미디어 사용에 관한 태도 연구
이제원 한국유통경영학회 2019 유통경영학회지 Vol.22 No.4
This Study is designed as a behavior research regarding value creation as well as communications utilization through social media that provides information by defining the relation between decision making and social media used by South Korea and China. By continuously evaluating and keeping tracking of the relation between social media and their users, this study suggests strategic measures to secure and enhance capability such as communications utilization and expansion opportunities. First, South Korea consumers showed a difference in economic value more, and China consumers having high influence in social values more. This shows the difference in the pursuit of values by nation. Second, in regard to the relation between perceived value and e-Satisfaction, Korea puts more values in the order of emotional, social, functional and economic values. China was confirmed to be important in order of economic, emotional, social and functional values. Third, economic value seems to be high in Korea, while functional value seems to be high in China regarding the relation to perceived value and e-Continuous use intention. Fourth, in regard to the relation between e-Satisfaction and e-Continuous use intention, e-Satisfaction influences on e-Continuous use intention in both countries. Fifth, the analysis of direct/indirect effects of variables suggests that the self-expression needs have an direct effect to perceived values and there are some indirect effects among self-expression needs, e-Satisfaction and e-Continuous use intention. This study overviews in-depth value and behavior of social media users in Korea and China. There seem to be chances to utilize the results of this study for the businesses of B2B, B2C and C2C. Also, the theories applied to this study has potentials to be expanded. Furthermore, this research suggests possibilities to expand the communications in the future in the academic and practical perspective. 본 연구는 소셜미디어가 급성장하는 아시아 국가 중 한국과 중국 사용자를 통해 지각된 가치추구와 태도에 대한 영향력 관계를 확인하였다. 또한, 소셜미디어의 지속적인 관계성 평가와 추적을 통해 커뮤니케이션의 기회와 역량확보를 강화할 수 있는 전략적 방안을 제안하였다. 연구결과 첫째, 자기표현 욕구가 한국은 경제적 가치에, 중국은 사회적 가치에 높은 영향력이 나타났다. 둘째, 지각된 가치와 e-만족도 관계에서 한국은 감정적> 사회적> 기능적> 경제적 가치로, 중국은 경제적 가치> 감정적 가치> 사회적 가치> 기능적 가치로 나타났다. 셋째, 지각된 가치와 e-지속사용 의도 관계에서 한국은 경제적 가치, 중국은 기능적 가치가 가장 큰 영향력을 제공하였다. 넷째, e-만족도와 e-지속사용의 도에서 한국과 중국은 동일결과가 나타났다. 다섯째, 변수들의 직간접효과를 분석한 결과 자기표현 욕구는 지각된 가치에 직접 효과, 자기표현 욕구와 e-만족도, e-지속사용 의도 간에는 간접효과가 나타났다. 본 연구결과는 아시아지역의 한국과 중국 소셜미디어 사용자들에 대한 심층적인 가치의 이해와 행동 관계를 연구하여 소셜미디어와 관련된 B2B, B2C, C2C와의 상황에서 연구의 결과 활용 가능성과 이론적 확장하였고, 기업들의 소셜미디어에 대한 새로운 전략적 접근 방향 제시와 향후 커뮤니케이션 확대 가능성에 대한 트렌드 변화 그리고 잠재적 경쟁자들을 예측할 수 있는 소셜미디어 생태계 검증을 통해 온라인 환경에서 소셜미디어가 추구해야 하는 고객가치의 극대화를 위한 자원의 재분배, 리포지셔닝의 방향성 등 학문적 실무적 시사점을 제시하였다.