다빈이의 관주시민되기 : 함흥에서 광주까지 10년

전다빈 전남대학교 글로벌디아스포라연구소 2006 전남대학교 세계한상문화연구단 국내학술회의 Vol.2006 No.11

In vitro 상에서 식품이 장내미생물에 미치는 영향

전다빈 ( Dabin Jeon ),싱그비니트 ( Vineet Singh ),운노타쯔야 ( Tatsuya Unno ) 한국응용생명화학회(구 한국농화학회) 2021 Journal of Applied Biological Chemistry (J. Appl. Vol.64 No.1

최근의 장내 미생물 연구에 따르면 우리의 건강에 대한 장내 미생물의 중요한 역할이 밝혀졌다. 이에 매년 다양한 건강 기능 식품이 개발되고 있다. 기능성 식품의 개발에는 기능성 식품의 유익한 효과를 확인하기 위한 in-vivo 실험이 포함되는 경우가 많다. 그 이유로 기능성 식품이 장내 미생물에 미치는 영향을 조사하기 위해서 동물 실험을 자주 수행하고 있는 실정이다. 식품의 유익한 효과는 장내 미생물 생태가 식품에 의해 이동되어 유익한 박테리아의 증가, 잠재적인 병원성 박테리아의 감소 또는 둘 다에 따라 평가 될 수 있다. 동물 실험은 일반적으로 시간이 많이 걸리고 까다롭기 때문에 본 연구팀은 분변 미생물에 대한 in-vitro 연구로 식이 건강상의 이점을 얼마나 잘 반영하는지 조사했다. 본 연구에서는 두 사람의 배설물을 사용하여 15가지 음식이 장내미생물에 주는 영향을 조사했다. 결과는 식단에 따라 다양한 장내 미생물 이동을 보여 주었으며, 이는 일반적으로 알려진 유익한 식단(즉, 김치, 청국장)이 유산균과 비피도 박테리움을 증가 시켰음을 확인했다. 따라서, 우리는 식이 요법의 유익한 효과를 평가하기 위해 체외 분변 미생물균총 분석을 사용할 수 있다고 제안한다. 또한, 이 방법은 더 나아가 개인 맞춤형 식단을 설정하는 데 도움이 될 수 있다고 사료된다. Recent gut microbiota studies have revealed the important roles of gut microbiota for our health. Increasing numbers of health functional foods have been developed every year. Development of functional food often includes ex- and invivo experiment to verify the beneficial effects of the functional food. To investigate effects of functional food on gut microbiota, animal models were often conducted. Beneficial effects of food can be evaluated based on h ow gut microbiota was shifted by food, which results in either increase in beneficial bacteria, decrease in potentially pathogenic bacteria or both. As animal experiments are generally time-consuming and laborious, we investigate how well in-vitro investigation of fecal microbiota may reflect dietary health benefits. Here, we tested 15 kinds of diets using two human subjects’ fecal materials. Our results showed varying gut microbiota shifts according to diets, which suggested generally known beneficial diets (i.e. Kimchi, Chunggukjang) increased Lactobacillus and Bifidobacterium. Therefore, we suggest that in vitro fecal microbiota analysis could be used to evaluate beneficial effects of diets. Moreover, this method may be ideal to establish personalized diet.

해수의 CO2와 영양염 농도 및 조도가 구멍갈파래( Ulva australis) 배아, 유엽과 성체의 생장에 미치는 영향

전다빈 ( Da Vine Jeon ),나연주 ( Yeon Ju Na ),유옥환 ( Ok Hwan Yu ),최한길 ( Han Gil Choi ) 한국수산과학회 2015 한국수산과학회지 Vol.48 No.1

The effects of CO2 concentration, nutrient levels, and irradiance on the growth of germlings and juveniles, and on the photosynthesis of adults were examined in a green tide alga, Ulva australis. We used a factorial experimental design with two CO2 concentrations (380 and 750 ppm), two nutrient levels (control and PES medium), and two irradiance levels (50 and 100 μmol photons m-2s-1). Germlings grew best (664.15±61.45 μm in length) under conditions of 750 ppm, PES, and 100 μmol photons m-2s-1 after 10 days in culture. Relative growth rates (RGR) of the juveniles were greatest (4.41% day-1) under conditions of 750 ppm, PES, and 50 μmol photons m-2s-1 after 5 days in culture. Photosynthetic efficiency (Fv/Fm) of the adult discs was 0.73 ± 0.05 before the experiment and reached a maximum (0.83±0.01) under conditions of 750 ppm, control, and 50 μmol photons m-2s-1 after 5 days in culture. Growth (germlings and juveniles) and photosynthesis (adult discs) of Ulva australis increased when CO2 levels were 750 ppm. Additionally, the optimal irradiance for growth and photosynthesis differed among stages, wherein germlings grew best at 100 μmol photons m-2s-1, juveniles grew best at 50 μmol photons m-2s-1, and adults photosynthesized most at 50 μmol photons m-2s-1. The performance of Ulva australis at all examined life stages was enhanced under the PES nutrient treatment. In conclusion, the physiological responses of U. australis to varying CO2, nutrient, and irradiance levels differed slightly among life stages. However, growth and photosynthesis always increased with elevated CO2 and nutrient concentrations. These results indicate that U. australis green tide blooms might occur more frequently in coastal areas if CO2 and nutrient concentrations increase.

환영받지못하는 기자들

이윤석,전다빈,강희연,어환희,하혜빈 (사)방송기자연합회 2023 방송기자 Vol.72 No.-

녹조류 실염주말의 유주자 방출과 배아생장에 미치는 환경요인의 영향

한수진,나연주,전다빈,김영식,최한길,남기완 한국해양과학기술원 2016 Ocean and Polar Research Vol.38 No.1

Effects of environmental factors on the zoospore release and germling growth of Chaetomorpha linum were examined. Zoospore release and germling growth experiments were carried out under a combination of temperatures × irradiances, and a single factor of irradiances, salinities, daylength and nutrients (nitrogen, phosphorus). Zoospore release was maximal under condition of 20oC × 100 μmol photons m−2s−1 in a factorial experiment (temperatures × irradiances), at 100 μmol photons m−2s−1 in irradiance experiment and at 34 psu in salinity conditions. After 24 days in culture, germling growth was maximal at 25oC × 100 μmol photons m−2s−1 in temperatures × irradiances and at normal seawater (34 psu) in salinity. Germling growth is faster at higher irradiance under same temperature condition and it increased with increasing daylengths (8−16 h). Chaetomorpha linum grew in wide range of N and P concentrations. The growth of germling was maximal at 50 μM PO4 3− and 40 μM NH4 +. Germling growth was more effective under nitrogen addition than phosphorus addition in culture. In conclusion, optimal environmental conditions for zoospore release were 20oC, 100 μmol photons m−2s−1, and 34 psu. In addition, the optimal germling growth was observed at 25oC, 100 μmol photons m−2s−1, 34 psu, 16 h, 50 μM (PO4 3−) and 40 μM (NH4 +).

MZ세대의 제페토와 로블록스 패션 아이템 구매의사결정과정에 관한 연구 - 자아 표현을 중심으로 -

이서원,김나윤,전다빈,한예림,신은정 한국의류산업학회 2022 한국의류산업학회지 Vol.24 No.4

This study aims to analyze consumers’ purchase decision-making process of buying avatar fashion items onthe Metaverse platform. Drawing on the connection between the self-expression tendency of the MZ generation and thatof avatars in the Metaverse, this study uses a qualitative research method to analyze how consumers express their self- image through the appearance of their avatars. Unlike previous studies on the clothing purchase decision-making process, this study shows that purchasing and consumption behavior involve the following six stages: recognizing desire, collecting information, evaluating alternatives, making purchases, evaluating the consumption, and post-purchase action-taking. In the first stage of the purchase decision-making process, consumers’ desire arises with self-image expression and con- firmation. In the second stage, consumers have a high tendency to shop in the best item category. In the alternative evaluation stage, consumers tend to seek items that match their highest standard while considering their personal preferences. In the fourth stage, when making actual purchases, unplanned purchase behavior often occurs along with an active practice of alternative evaluation. In the fifth stage, the evaluation of the consumption shows that consumers achieve satisfaction by applying a style to their avatars that they are unable to try in the real world. In the last stage, con- sumers often use their purchases to communicate their various styles with other online consumers. Therefore, we con- clude that the online purchase decision-making process differs from the offline process as it is divided into six stages.

ZnS:Cu-PDMS 기반 기계 발광 유연 나노 복합체의 CNT 혼입에 따른 전기 및 광학적 특성 향상에 대한 연구

김태민,김현우,윤종혁,김미희,전다빈,최대철,이성남 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.5

Mechanoluminescence (ML) is a phenomenon where the application of mechanical force to ML materials generates an electric field and produces light, holding significant promise as an eco-friendly technology. However, challenges in commercializing ML technology has arisen due to its low brightness and short luminous lifetime. To address this, in this work, we enhance ML efficiency by mixing carbon nanotubes (CNTs) into a ZnS: Cu embedded in a polydimethylsiloxane composite ML device. The inclusion of CNTs boosts ML intensity by 98% compared to devices without CNTs, as the increasing CNT fraction elevates conductivity, thereby amplifying ML intensity. However, this increase in CNT fraction also leads to enhanced light absorption within the device. Consequently, we observe a trend where ML intensity rises initially but declines beyond a CNT fraction of 0.0015 wt%. Based on these findings, we anticipate that our research will make valuable contributions to the advancement of electrical powerless mechanoluminescent technology.

쇠미역(Costaria costata)과 미역(Undaria pinnatifida) 배우체의 생장과 성숙에 광과 온도가 미치는 영향

나연주 ( Yeon Ju Na ),전다빈 ( Da Vine Jeon ),한수진 ( Su Jin Han ),( Cyr Abel Ogandaga Maranguy ),안대성 ( Dae Sung An ),차형기 ( Hyung Kee Cha ),이재봉 ( Jae Bong Lee ),양재형 ( Jae Hyeong Yang ),이해원 ( Hae Won Lee ),최한길 한국수산과학회(구 한국수산학회) 2016 한국수산과학회지 Vol.49 No.2

We examined for differences in the growth and fertility of microscopic stages between Costaria costata and Undaria pinnatifida in crossed temperature×irradiance (12, 17, 22℃×20, 60 μmol photons m-2s-1) and daylength×irradiance (8, 12, 16, 24 h×20, 60 μmol photons m-2s-1) experimental designs. After 13 days in culture, maximum gametophyte growths of the two species were obtained under the following combinations of factors: 17℃×60 μmol photons m-2s-1 and 24 h daylength×60 μmol photons m-2s-1. C. costata gametophytes produced sporophytes about 6 days earlier than those of U. pinnatifida. Sporophyte densities were highest in the 12 h daylength×60 μmol photons m-2s-1 combina-tion after 20 days in C. costata (9.7 plants mm-2) and 26 days in U. pinnatifida (9.1 plants mm-2). However, optimal growth conditions for the microscopic sporophytes differed between species: 17℃×60 μmol photons m-2 s-1 for C. costata, 12℃×60 μmol photons m-2 s-1 for U. pinnatifida. Thus, C. costata gametophytes grew faster and produced sporophytes earlier than those of U. pinnatifida, even though the haploid gametophytes of the two species responded similarly to environmental conditions. Optimal growth temperatures for the microscopic sporophytes also differed between species.

한국 남서해안 관매도와 영산도의 해조상 및 군집구조

한수진 ( Su Jin Han ),전다빈 ( Da Vine Jeon ),이정록 ( Jung Rok Lee ),나연주 ( Yeon Ju Na ),박서경 ( Seo Kyoung Park ),최한길 ( Han Gil Choi ) 한국수산과학회 2016 한국수산과학회지 Vol.49 No.1

Seasonal variations in seaweed communities were examined at Gwanmaedo and Yeongsando, Korea, from May 2014 to February 2015. Eighty-nine species were identified, including 11 green, 20 brown and 58 red algae. Seventy-three and 74 species were identified at Gwanmaedo and at Yeongsando, respectively. Sargassum thunbergii and Myelophycus simplex were the dominant species, comprising 60.89 and 39.50% of total biomass, respectively, and S. fusiforme was subdominant at the two sites. Of six functional seaweed forms, the coarsely-branched form was the most dominant, forming about 43% of the species number at Gwanmaedo and Yeongsando. Seasonal seaweed biomasses ranged between 53.10 and 172.85 g/m2 (average 93.57 g dry wt./m2) and between 83.11 and 176.20 g (138.21 g/m2) at Gwanmaedo and Yeongsando, respectively. The vertical distribution from the high to low intertidal zone was S. thunbergii and Gloiopeltis furcata; M. simplex and S. thunbergii; and S. fusiforme at Gwanmaedo. Seaweed zonation was distinct at Yeongsando, with S. thunbergii and Gelidiophycus freshwateri; M. simplex and S. thunbergii; and S. thunbergii and S. fusiforme. Seaweed biomass, evenness index (J``), and diversity index (H``) values were greater at Yeongsando (138.21 g/m2, 0.51, 2.18 respectively) than at Gwanmaedo (93.57 g/m2, 0.48, 2.04), indicating that the seaweed community at Yeongsando is more stable than that at Gwanmaedo.

녹조대발생종 솜대마디말(Cladophora albida)의 유주자 방출과 초기생장에 환경요인이 미치는 영향

나연주 ( Yeon Ju Na ),전다빈 ( Da Vine Jeon ),이정록 ( Jung Rok Lee ),박서경 ( Seo Kyoung Park ),김영식 ( Young Sik Kim ),최한길 ( Han Gil Choi ),남기완 ( Ki Wan Nam ) 한국수산과학회 2017 한국수산과학회지 Vol.50 No.2

We examined the effects of environmental factors on zoospore release and germling growth of the green tide alga Cladophora albida under various conditions of temperature×irradiance (zoospore release), temperature×irradiance× nutrient (germling growth), and a single factor test of salinity. Zoospore release was maximized at 30℃ and 100 μmol photons m^-2s^-1 in the temperature·irradiance experiment and at 34 psu in the salinity experiment. Maximum germling growth was observed at 25℃ with 100 μmol photons m^-2s^-1 and PES (Provasoli`s Enriched Seawater) in the temperature·irradiance·nutrient experiment, and at 34 psu in the salinity experiment. Germlings grew faster at higher irradiances for a given temperature level, and also grew faster as salinity increased over the range of 5-34 psu. Overall, optimal environmental conditions for zoospore release were 30℃, 100 μmol photons m^-2s^-1 and 34 psu. Maximal germling growth occurred at 25℃, 100 μmol photons m^-2^s-1, PES, and 34 psu. C. albida blooms are most likely to occur under these optimal environmental conditions, as plentiful zoospore release and rapid germling growth lead to population growth.