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So Hee Ahn,Won Yeoung Choi,Ji Won Jeong,Geon Woo Park,Su Yeon Kang,Eun Jeong Kim,Su Rim Sin,Eun Seo Jang,Gye Won Lee,Young Ho Cho 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
In this study, To investigate the antioxidant activities of Rhaponticum uniflorum extracts (RUE), we assessed scavenging activities on DPPH, ABTS radicals, and reducing power. The DPPH and ABTS radical scavenging activities (SC50) of RUE were 96.97±1.19 μg/mL and 31.26±0.13 μ g/mL, respectively, and the reducing power significantly increased dose-dependent manner. To study the antioxidant effecters of RUE in H₂O₂ induced human keratinocytes, expression of Nuclear factor erythroid-2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) were determined by Western blot and qRT-PCR. RUE induced the expression of HO-1, a critical target enzyme of Nrf2, in a concentration-dependent manner. The expression of HO- 1 mRNA was also induced in H₂O₂-treated HaCaT cells but no significant difference in the level of HO-1 mRNA was observed. Taken together, these results suggest that RUE may be useful as a potential ingredient for anti-aging products.
박신재,이정문,권용호 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
Classification of fingerprints is one of the major subjects on which many researchers have been studying for efficient identification, But fingerprints should be preprocessed in various ways prior to being classified. Factors such as the accuracy and the processing time should be considered in classified. Factors such as the accuracy and the processing time should be considered in classification of fingerprints. In this paper, we propose a method for classifying fingerprints into several frequent patterns. This method consists of two stages. A fingerprint image is first converted to a skeleton form to find out the center. Then it is identified as a member of one of preclassified pattern by the frequency domain feature. Experiments show that the proposed method is quite useful in classifying fingerprints into typical patterns
역상 미셀용액에 가용화된 acetanilide, p-diacetylbenzene 및 tetrabromo-p-quinone의 미세환경의 성질
金信局,朴哲浩,李相佐,高正秀 木浦大學校 基礎科學硏究所 1995 基礎科學硏究誌 Vol.13 No.-
Solubilization of some carbonyl compounds such as acetanilide, p-diacetylbenzene and tetrabromo-p-quinone was investigated in a variety of reversed micellar solutions by UV spectrophotometric method. In the reversed micellar solutions used cyclohexane as a solvent, the microenvironmental polarity of these carbonyl compounds decreased as DAP> DAB> DAC> DAL By adding water into the reversed micellar solution, the polarity of the site for the solibilizate became higher.
인구예측방법에 관한 연구 : 대전·충남권 도시의 도시기본계획에 적용된 인구예측방법을 중심으로
이건호,박신원 牧園大學校 建築·都市硏究센터 1998 建築·都市環境硏究 Vol.6 No.-
It is very important that urban planning has plan with understanding population size and population composition in process. But, population projection in Master plans as present city visions is only series of process of calculating population with existing population projection formulas in these days, because present population planning pay no attention to social characteristics, factors of population increase and decrease, characteristic of population composition, and countermeasure of population decrease and stagnation in small local cities. In this contest, it needs to create new criteria of population projection for urban manufacture planning with effective population projection. Therefore, the aim of this study is fundamental study of prepare for new criteria of population projection for urban manufacture planning and population planning with understanding population planing and it's errors.
전기 저항법 및 초음파 속도법을 이용한 콘크리트 압축강도 조기 판정을 위한 실험 연구
최신호,박정민,이도헌,김화중 경북대학교 산업기술연구소 1996 産業技術硏究誌 Vol.24 No.-
It is very difficult to test the concrete quality, because the concrete consists of various materials, such as cement, sand, gravel, water, and etc. Therefore, the concrete has difficulties to estimate quickly its quality, compared with the other materials, Accordingly, we can't reflect quality control result quickly, a fresh concrete has many serious problems (economical problem, structural problem, etc.) after being cast in place. Especially, it takes a long time to discover the problems so that it's difficult to consider a counterplan when we discover them. And it takes not only many cost to Solve those problems, but we can't also remove perfectly fundamental ones. Besides, it results in shortening a whole building life, nevertheless the damage is small and limited. Therefore, the earlier test system of concrete quality is needed for the solution of the problem. The purpose of this study is to develop the method of earlier concrete quality control and its system, which evaluate the concrete 28 days strength in concrete. And this study establishes the general equation for the prediction of 28 days strength from the results of the earlier test. Also the method adopted ultras-onic velocity and electric resistivity as specific characters. This study proposed the method, the general equation, and the system for earlier concrete strength evaluation so that we may achieve convenient and quick quality controls.
대전광역시 지가변화 분석을 통한 공간구조해석에 관한 연구 : 개별공시지가를 대상으로
이건호,박신원 牧園大學校 建築·都市硏究센터 1999 建築·都市環境硏究 Vol.7 No.-
This is the study to find out the characteristics of the inner spatial structure in the city through the analysis of the land price in Taejon Metropolitan Area. The results of this study are following this, First, the land price in Taejon is holding steady and the area of the city is expanding to the suburb with the urban development projects. Second, because of the change of urban inner spatial structure, the space threshold of the existing downtown area is reduced but the centrality of partial district is being strengthen. Third, the urban inner spatial structure transforms to a system of dual C.B.D area system from mononuclear center and is being reorganized to the multi-nuclei spatial structure with the strengthen of each district center.