과일 껍질의 펙틴과 해조류의 알긴산을 이용한 생분해성 플라스틱 제조 및 특성 분석

남윤해,조강성,신지륜,김미란 한국과학영재교육학회 2024 과학영재교육 Vol.16 No.1

본 연구에서는 환경 보호 및 지속 가능한 발전을 위해 버려지는 과일 껍질에서 추출한 펙틴과 생산성이 높은 해조류에서 얻은 알긴산을 활용한 비식용 작물 기반 포장재 형태의 생분해성 플라스틱을 제조하고 기계적⋅화학적 성질 분석 실험을 수행하였다. 계산화학을 이용해 선행연구에서 사용한 칼슘과 아연 이온 중 펙틴, 알긴산과의 결합친화도 평균값이 더 높은 아연 이온을 고화할 금속이온으로 선정하고 펙틴과 알긴산의 조합을 달리해 다섯 종류의 생분해성 플라스틱을 제조했다. 그후 인장 실험, 내화학성 실험을 통해 최적의 기계적⋅화학적 성질을 가진 펙틴과 알긴산 조합을 탐색했다. 그 결과 [펙틴 4g, 알긴산 4g], [펙틴 2g, 알긴산 6g] 조합이 선행연구에서 제시한 [알긴산 8g]보다 기계적 성질과 화학적 성질 모두 우수한 것으로 나타났다. 따라서 알긴산만 사용하는 것보다 알긴산과 펙틴을 25∼50% 정도 혼합하여 포장재 형태의 생분해성 플라스틱을 제조할 때 기계적 성질과 화학적 성질이 더 우수할 것으로 보인다. In this study, biodegradable plastics in the form of non-edible crop-based packaging materials utilizing pectin extracted from discarded fruit peels and alginic acid obtained from highly productive algae were prepared and subjected to mechanical and chemical characterization experiments for environmental protection and sustainable development. Using computational chemistry, zinc ions with higher average binding affinity to pectin and alginate were selected as the metal ions to be solidified among calcium and zinc ions used in previous studies, and five types of biodegradable plastics were prepared by varying the combination of pectin and alginate. The results showed that the combinations of [4g pectin, 4g alginic acid], [2g pectin, 6g alginic acid], and [2g pectin, 6g alginic acid] had better mechanical and chemical properties than [8g alginic acid], which was suggested in previous studies. Therefore, it seems that biodegradable plastics with 25∼50% alginic acid and pectin have better mechanical and chemical properties than alginic acid alone.

오이묘의 저온처리가 생육, 과실특성 및 수량에 미치는 영향

남윤일,우영회,홍규현,이관호,서규선,김종구,Nam, Y.I.,Woo, Y.H.,Hong, K.H.,Lee, K.H.,Suh, G.S.,Kim, J.K. 국립한국농수산대학교 교육개발센터 2008 현장농업연구지 = Journal of practical agricultural resear Vol.10 No.1

This study was conducted to investigate the influence of chilling temperature and duration at different seeding stages on yield, fruit characteristics and growth of cucumber in a greenhouse. When 20-day-old cucumber were exposed to 0 and 3℃ for 10 hours, 25 and 30% reduction in the main stem elongation rate and 34 and 37% reduction in total leaf area per plant were observed. The reduction in stem elongation and total leaf area was apparently associated with the increases in chilling duration. Exposure of seedlings to 6℃ failed to causes any significant differences in growth as compared to the unchilled plants. Repeated exposure of seedlings to 3℃ chilling for 10 hours per day increased the chilling injury significantly. The seedlings exposed to low temperature for 3 consecutive days exhibited severe injury as compared to the seedlings exposed to chilling treatment only once or twice. Fruit elongation rate was inhibited by approximately 10%, such as 0.59~2.26cm/day, with chilling of 15 hours at 0℃ as compare to 0.61~2.60cm/day in the non-chilled plants. Chilling treatment at 0~3℃ for 10 hours reduced the percentage of marketable fruits by 25~26%. while it increased the percentage of severely bent fruits significantly. Total fruits yield was reduced by 15~25% in cucumber plants when the chilling treatment was given to 20-day-old seedlings and by 22~37% in 30-day-old seedlings. This shows that, Larger seedlings were more sensitive to chilling. Total yield was also influenced by the duration of chilling. Definitely, at 0℃, 5-hour chilling treatment caused 18% of reduction, 10-hour caused 30%, and 15-hour caused 36%, respectively.

몇가지 화학물질 처리가 오이 묘의 냉해경감에 미치는 영향

남윤일(Nam Yooun-Il),우영회(Woo Young-Hoe),송천호(Song Chun-Ho),김동억(Kim Dong-Eog),이시영(Lee Si-Young) 한국원예학회 1997 한국원예학회 학술발표요지 Vol.15 No.1

대맥의 등숙기간중 엽신의 노화와 동화산물 전류의 품종간 차이

남윤일,구본철,연규복 한국작물학회 1991 한국작물학회 학술발표대회 논문집 Vol.1991 No.-

냉온처리 전후의 광환경 조건이 오이 묘의 생존율에 미치는영향

남윤일(Nam Yooun-Il),우영회(Woo Young-Hoe),김형준(Kim Hyung-Jun),김동억(Kim Dong-Eog),권영삼(Kwon Young-Sam),채제천(Chae Je Cheon) 한국원예학회 1997 한국원예학회 학술발표요지 Vol.15 No.1

Anti-obesity Effects of the Stem Bark of Japanese Horse Chestnut (Aesculus turbinate) in 3T3-L1 Preadipocytes

남윤이,김진규,정해리,서준교 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.1

The inhibitory effects of lipid accumulation onethanol extract from stem bark of Japanese horse chestnut(JHC) were evaluated. Exposure to JHC extract (10-100μg/mL) for a 72 h incubation period did not alter cellviability compared to the untreated control. JHC extract,with concentrations of 25, 50, and 100 μg/mL, inhibitedlipid accumulation in 3T3-L1 adipocytes in a dosedependent manner. The expression of PPARγ and C/EBPα,important adpogenic key markers was significantly reducedwhen JHC extract was added to cells for 8 days comparedwith the untreated control group. These results suggest thatJHC extract might be a potential therapeutic agent as anatural anti-obesity material.

오이묘에 냉온 Stress가 광합성 및 생리반응에 미치는 영향

남윤일(Nam Yooun-Il),우영회(Woo Young-Hoe),전희(Chun Hee),김형준(Kim Hyung-Jun) 한국생물환경조절학회 2001 한국생물환경조절학회 학술발표논문집 Vol.10 No.2

판소리 스토리텔링 개발 사례연구-창작 판소리 「사천가」와 「몽중인-나는 춘향이 아니라,」를 중심으로-

남윤일 ( Yoonil Nam ) 사단법인 아시아문화학술원 2021 인문사회 21 Vol.12 No.2

본 연구는 판소리 스토리텔링 개발 사례연구를 통해 판소리의 대중화와 현대화의 발전 가능성을 탐색하는 데 목적이 있다. 판소리는 다양한 서사를 각색 및 재창작하며 스토리텔링 영역을 확장하고 있으며 이를 사례 분석을 통해 확인하고자 했다. 첫째, 해외문학의 수용 및 변용사례를 살폈다. 창작 판소리 「사천가」는 독일 희곡 「사천의 선인」을 21세기 한국으로 각색하여 문화적 할인을 극복하고 국제적 경쟁력을 갖춘 공연콘텐츠로서의 가능성을 확인할 수 있다. 둘째, 전통 레퍼토리를 현재적으로 재해석한 사례다. 창작 판소리 「몽중인-나는 춘향이 아니라,」는 판소리 「춘향가」의 주인공인 춘향과 몽룡 중심의 서사를 향단으로 전복한다. 향단이 꿈에서 경험한 21세기 현대 여성의 삶을 통해 시대 고민을 다루며 동시대적 공감을 이룬다. 시대적 흐름과 대중적 요구를 수용한 사례연구를 통해 판소리의 새로운 스토리텔링 개발 가능성을 확인할 수 있다. The purpose of this case study is to survey the developing of Pansori storytelling and investigate the possibility of Pansori’s popularization and modernization. This study seeks to confirm through case analysis that Pansori expand the realm of storytelling by dramatizing and reproducing various narratives. First, the newly created Pansori Sacheonga, which stages the German play The Good Woman of Setzuan in the setting of 21st-century Korea, proves that newly created Pansori can overcome cultural discount and secure international competitiveness as an art form. Secondly, the newly created Pansori In a Dream appropriates the narrative of the traditional Pansori Chunhyangga, which originally centered on characters Chunhyang and Mongryong, to retell it from Hyangdan’s perspective. The life of a 21st-century woman as experienced by Hyangdan in her dreams addresses issues that transcend time periods to evoke empathy in today’s audiences. This work affirms the potential development of a new form of Pansori storytelling that offers a modern take on various narratives and embraces contemporary trends and demands.

국가기록원 기록정보센터의 열람서비스 제공 절차 및 특징에 관한 질적 연구

남윤아,임진희 한국기록학회 2016 기록학연구 Vol.0 No.50

Archival reference service is the ultimate goal and outcome of records management. It encompasses a whole range of activities to connect records with the demands for them. Intellectual needs for records are met by the procedure of information disclosure to guarantee the people’s right to know and to provide active responses to archival information needs. Thus, it is required to establish an efficient search system by unifying search tools for archives used in information disclosure and sorting out the classification systems and description items according to the archive types. The qualitative enhancement of information disclosure can be expected when there is a harmonious circulation of attributes—such as applicants, records, search tools, and information providers—for the smooth implementation of reading processes in the context of archival reference service. Therefore, the present study holds its significance in the following aspects. First, it presented a picture of pending issues and the reality of reading service processes from an internal perspective by examining the factors and characteristics that influence “reading service.”Second, it demonstrated the phenomenon of close interactions among information providers, applicant, search tools, and records in the process of requesting, searching, and providing records. Third, it proposed the need for a total integrated search tool around the pending issues of reading processes at the National Archives of Korea. Fourth, it promoted an understanding of archival information utilization at the working level among information providers. Finally, it showed major differences in the quality of information provision of “reading service” according to the “perceptions” and “attitudes” of information providers. 기록정보 서비스는 기록관리의 궁극적인 목적이자 결과이며, 기록의 수요와 기록물을 연결시키는 일련의 활동들을 의미한다. 기록물의지적요구를 정보공개 절차를 통해 제공하는 것은 국민의 알 권리 보장과 기록정보 수요에 능동적으로 대응하기 위함이다. 이를 위해서 열람프로세스의 원활한 수행을 위해 청구인 ․ 기록물 ․ 검색도구 및 열람제공자라는 속성들의 조화로운 순환이 선행되어야 정보공개의 질적 향상을 기대할 수 있다. 이에 따라 본 연구는 첫째,‘열람서비스’에 영향을미치는 요인과 특징에 관한 현상을 밝힘으로써 열람서비스 프로세스의 현안과 실제를 내부적 관점에서 제시하고 둘째, 기록물 청구 및 검색과 제공의 과정에서 열람제공자-청구인-검색도구-기록물 간의긴밀한 상호작용에 관한 현상을 보여주며 셋째, 국가기록원 열람 프로세스 현안을 중심으로 총체적인 통합 검색도구에 관한 필요성을 제안하며 넷째, 열람제공자에게 실무적 측면에서의 기록정보 활용에 대한이해를 제공하고 다섯째, 열람제공자의 인식과 태도에 따라 정보제공품질에 주요한 차이를 보인다는 것을 시사하는 데 있다.

박테리아필터링을 위한 에어-젯 스프레이기반 PCL 나노멤브레인

남윤한(Yoon Han Nam),김희경(Hee Kyeong Kim),김애진(Ae Jin Kim),장세진(Sejin Jang),이승재(Seung-Jae Lee),곽소정(So-Jung Gwak),조영삼(Young-Sam Cho),서경덕(Kyoung Duck Seo) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.12

Airborne and dust borne microorganism including bacteria causes infection, such as respiratory disease, skin disease, and etc. Antibacterial filters have been attracted because they can prevent infectious diseases. Previous reported methods for fabricating antibacterial filters, such as liquid dip coating, aerosol-based process, and electrospinning, have been developed. However, these methods still require complex process, and special facilities. In this study, we proposed a nanomembrane which can filter bacteria based on biodegradable polycaprolactone(PCL) via air-jet spray. To evaluate efficiency of bacterial filtering, a suspension of E. coli (Escherichia coli) was permeated through the nanomembrane for 10 minutes. As a result, it was confirmed that the nanomembrane could filter 99% of E.coli. In addition, the nanomembrane via air-jet spray would be manufactured as a large-area, low-cost, and free-form in a single process.