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남혜원,현영희,변진원 동아시아식생활학회 2004 동아시아식생활학회지 Vol.14 No.6
This study was performed to develop a standardized recipe for yuza pyun made of citron juice that is by-product of citron tea, to increase the utilization of citron. The effects of mungbean starch(15%, 18%) and dilution ratio of yuza extract(100%, 75%, 50%) on the quality characteristics were evaluated. The quality characteristics of the samples were estimated in terms of sweetness, color difference, texture profile analysis and sensory evaluation. Sweetness of the 18% mungbean groups were higher than 15% groups(p<0.001). The values of Hunter color system indicated that higher content of yuza extract tended to increase yellowness significantly(p<0.001). Texture profiles of hardness, adhesiveness, springiness, cohesiveness, gumminess of yuzapyun showed no significant differences among samples. For sensory evaluation, color and sourness were decreased as yuza extract was diluted, whereas elasticity and sweetness were increased. Yuza pyun containing 18% of mungbean starch with 50% diluted extract was the most preferred in overall acceptability. According to multiple regression analysis, color, sweetness, elasticity and sourness(in order) were important control factors in overall acceptability.
Danielle Ooyoung Pyun,Miri K. Chung,Ho Jung Choi 고려대학교 언어정보연구소 2013 언어정보 Vol.17 No.-
Pyun, Danielle O., Chung, Miri K. & Choi, Ho Jung. 2013. KFL learners’ acquisition of Korean locative particles: A corpus-based contrastive interlanguage analysis. Language Information. Volume 17. 23-46. Adopting the contrastive interlanguage analysis methodology, this study investigates KFL (Korean as a Foreign Language) learners’ acquisition of Korean locative case particles. A learner corpus compiled from eighty-seven intermediate learners of Korean was compared with a native speaker corpus on the frequency distribution of the five semantic categories of the Korean locative case (i.e, static location, dynamic location, time, goal, and source). In addition, learner errors on the use of locative case particles were quantified and examined according to the five semantic categories. The results of this study showed that KFL learners’ use of locative case particles substantially deviated from native speakers’ usage in frequency. Learners’ inaccurate and limited use of locative case particles were attributed to such factors as L1 transfer, overgeneralization, prior input, and interlanguage development.
DESIGN EVALUATION OF NO SPIN DIFFERENTIAL MODELS USING THE AXIOMATIC APPROACH
Pyun, Y.S.,Jang, Y.D.,Cho, I.H.,Park, J.H.,Combs, A.,Lee, Y.C. The Korean Society of Automotive Engineers 2006 International journal of automotive technology Vol.7 No.5
Two No Spin Differential(NSD) models were benchmarked for a project of Dual-Use Technology. The Axiomatic approach is utilized to evaluate the designs of the models. The Independence Axiom is satisfied at the top level of design but not at the second level, which implies the design exhibits coupling and will admit design improvements. The detailed process of design evaluation is described. It is shown that it is possible to develop a unique and evolutionary NSD design by solving the problems that cause coupling within two models.
Pyun, Do Gi,Yoon, Hyoung Soon,Chung, Ho Yun,Choi, Hyun Jun,Thambi, Thavasyappan,Kim, Bong Sup,Lee, Doo Sung The Royal Society of Chemistry 2015 Journal of Materials Chemistry B Vol.3 No.39
<P>Silver-containing dressings have been widely used to control wound infection. In this study, we developed various amounts of silver-hydroxyapatite (AgHAP)-containing polyurethane foams (PUFs) (AgHAP-PUFs), and their biological properties including biocompatibility, antibacterial activities, and <I>in vivo</I> wound healing properties were evaluated in the Sprague-Dawley rat model. From electron microscopy imaging, it was found that AgHAP particles are uniformly dispersed inside PUFs. The release of Ag from PUFs was dependent on both time and concentration, <I>i.e.</I>, the amount of released Ag was significantly higher with increasing immersion time and Ag content in the PUFs. From the cytotoxicity test, AgHAP-PUFs exhibited high antibacterial efficacy against four pathogenic bacteria, and they were not cytotoxic against L-929 fibroblast cells. AgHAP-PUF treated groups exhibited scar-free wound healing by promoting re-epithelialization and collagen deposition in the infected excision wound model. Overall, it is evident that AgHAP-PUFs may be considered as a good antibacterial wound dressing for infected wounds due to their good antibacterial activity, biocompatibility, and wound healing rate.</P>