http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Young Yoon,Sujin Yun,HyeJin Yang,Yoon Hwa Lim,Haekwon Kim 한국발생생물학회 2014 발생과 생식 Vol.18 No.4
Previously we have shown that human abdominal adipose derived-stem cells (ADSCs) could aggregate during the high-density culture in the presence of human serum (HS). In the present study, we observed that human cord blood serum (CBS) and follicular fluid (HFF) also induced aggregation. Similarly, porcine serum could induce aggregation whereas bovine and sheep sera induced little aggregation. qRT-PCR analyses demonstrated that, compared to FBS-cultured ADSCs, HScultured cells exhibited higher level of mRNA expression of CLDN3, -6, -7, -15, and -16 genes among the tight junction proteins. ADSCs examined at the time of aggregation by culture with HS, BSA, HFF, CBS, or porcine serum showed significantly higher level of mRNA expression of JAM2 among JAM family members. In contrast, cells cultured in FBS, bovine serum or sheep serum, showed lower level of JAM2 expression. Immunocytochemical analyses demonstrated that the aggregates of HS-cultured cells (HS-Agg) showed intense staining against the anti-JAM2 antibody whereas neither nonaggregated cells (HS-Ex) nor FBS-cultured cells exhibited weak staining. Western blot results showed that HS-Agg expressed JAM2 protein more prominently than HS-Ex and FBS-cultured cells, both of latter reveled weaker intensity. These results suggest that the aggregation property of ADSCs during high-density culture would be dependent on the specific components of serum, and that JAM2 molecule could play a role in the animal sera-induced aggregation in vitro.
Yoon, A Young,Yun, Sujin,Yang, HyeJin,Lim, Yoon Hwa,Kim, Haekwon The Korean Society of Developmental Biology 2014 발생과 생식 Vol.18 No.4
Previously we have shown that human abdominal adipose derived-stem cells (ADSCs) could aggregate during the high-density culture in the presence of human serum (HS). In the present study, we observed that human cord blood serum (CBS) and follicular fluid (HFF) also induced aggregation. Similarly, porcine serum could induce aggregation whereas bovine and sheep sera induced little aggregation. qRT-PCR analyses demonstrated that, compared to FBS-cultured ADSCs, HS-cultured cells exhibited higher level of mRNA expression of CLDN3, -6, -7, -15, and -16 genes among the tight junction proteins. ADSCs examined at the time of aggregation by culture with HS, BSA, HFF, CBS, or porcine serum showed significantly higher level of mRNA expression of JAM2 among JAM family members. In contrast, cells cultured in FBS, bovine serum or sheep serum, showed lower level of JAM2 expression. Immunocytochemical analyses demonstrated that the aggregates of HS-cultured cells (HS-Agg) showed intense staining against the anti-JAM2 antibody whereas neither non-aggregated cells (HS-Ex) nor FBS-cultured cells exhibited weak staining. Western blot results showed that HS-Agg expressed JAM2 protein more prominently than HS-Ex and FBS-cultured cells, both of latter reveled weaker intensity. These results suggest that the aggregation property of ADSCs during high-density culture would be dependent on the specific components of serum, and that JAM2 molecule could play a role in the animal sera-induced aggregation in vitro.
Sujin Yoon 한국기독교교육정보학회 2020 Journal of Christian education information tech Vol.0 No.37
This study explores experiences of North Korean refugee students at Christian alternative schools in South Korea. The participants in this study were twelve young people aged 17-27, who were current or recent students of three Christian alternative schools established for young North Korean refugees. The young people’s experiences were gathered using one-to-one interviews. A thematic approach was used to analyses the data. These young people saw the schools as helpful for their integration into South Korean society, and this aspect should be valued appropriately. However, they were frustrated by the lack of opportunities to mingle with South Korean peers and by feelings limited freedom within the school settings. Despite their vulnerabilities as refugees, these young people tried to manage and overcome adversities that they faced in their own ways. This paper concludes by suggesting improved practices that schools may apply to more effectively help students from refugee backgrounds achieve successful integration into a new society.
Photoreflectance study on the photovoltaic effect in InAs/GaAs quantum dot solar cell
Yoon, Sujin,Lee, Seung Hyun,Shin, Jae Cheol,Kim, Jong Su,Lee, Sang Jun,Leem, Jae-Young,Krishna, Sanjay Elsevier 2018 Current Applied Physics Vol.18 No.6
<P><B>Abstract</B></P> <P>To investigate the effect of quantum dot (QD) layers on the photovoltaic process of InAs/GaAs QD solar cell (QDSC), QD layers were embedded in conventional GaAs p-n junction SC (GaAs SC) structures. The photoreflectance (PR) was examined at different temperatures (<B> <I>T</I> </B>) and excitation light intensities (<B> <I>I</I> </B> <SUB> <B> <I>ex</I> </B> </SUB>) to investigate the photovoltaic effects through observation of the Franz-Keldysh oscillations (FKOs) in the PR spectra. The evaluated the p-n junction electric fields (<B> <I>F</I> </B> <SUB> <B> <I>pn</I> </B> </SUB>) of the InAs QDSC was different from that of the GaAs SC. Moreover, InAs QDSC show that the different photovoltaic behaviors compared with GaAs SC by varying <B> <I>I</I> </B> <SUB> <B> <I>ex</I> </B> </SUB> and <B> <I>T</I> </B>. From these considerations, we suggest that the different photovoltaic behaviors are caused by the effect of the additional photo-carrier generation in InAs QD layers resulting in enhancement of the field screening effect in <B> <I>F</I> </B> <SUB> <B> <I>pn</I> </B> </SUB>.</P>
민관학협력 사회혁신 프로젝트 수업에 관한 질적 사례 연구
윤수진(Yoon, Sujin) 부산대학교 교육발전연구소 2020 교육혁신연구 Vol.30 No.3
연구목적: 이 연구는 2020학년도 1학기에 A여자대학교에서 실시한 사회문제해결 프로젝트 수업 사례를 통해 사회혁신을 위한 민관학협력 수업의 역할과 의미를 살펴보고 이를 대학에서의 사회혁신교육 실천의 유용한 한 방안으로 제안하고자 한다. 연구방법: 수업 관련 기록, 개발 및 운영 회의록, 학생 제출물(프로젝트 결과 발표자료, 성찰저널, 만족도 조사 결과)을 주요 데이터로 수집하고 이를 분석하여 핵심 주제를 범주화하였다. 연구결과: 이 수업은 대학, 정부기관, NGO, 민간기업이 참여한 민관학협력 수업으로 개발, 운영되었으며 학생들은 의정부시 도시재생사업의 한 부분에 참여하였다. 총 28명의 수강생이 7개 팀으로 나뉘어 의정부시 신흥마을에서 프로젝트를 실시하였고, 각 기관은 프로젝트 현장 제공, 기관별 멘토링과 전문가 평가로 수업에 참여하였다. 학생들은 수업을 통해 다양한 관점을 이해하고 기관 간 협업을 통해 사회 변화를 추구해 가는 과정을 경험하였고 이를 통해 사회혁신 활동이 독려되었던 것으로 나타났다. 논의 및 결론: 이 논문은 민관학협력 프로젝트 수업이 사회혁신을 추구하는 다양한 주체들을 연결하는 역할을 하고 이를 통해 학생들의 사회혁신 활동을 촉진함으로써 유용한 사회혁신교육 실천의 한 방안으로서 대학에서 적용 가능성이 있음을 보여주었다. 향후 발전된 수업을 통해 사회변화에 실제적으로 기여하기 위하여 프로젝트 현장 주민들과의 소통과 협업이 강화될 수 있는 방안과 지원 체계 마련이 필요할 것이다. Purpose: The purpose of this study is to examine the role and significance of a university course as a means of connecting various social innovation actors through a qualitative case study on a project-based learning for social innovation by a public-private-academic partnership conducted at a women’s university. Based on the case study, this research suggests an effective approach of social innovation education. Method: The course was reviewed by analyzing the class materials, course-related records, results of the class satisfaction survey conducted after the end of the course, reflection journals submitted by the students, project’s final presentation materials and project proposals of each team. Results: The course was developed as a public-private-academic partnership involving a university, a government agency, a non-profit organization, and a private company. The students participating in the course were part of an urban regeneration project in the city of Uijeongbu. A total of 28 students took part in the project designed in the course. The agencies that participated in the course supported and mentored the students and also evaluated their performance. It was found that the students experienced the whole process of a project and various perspectives through the course because of the participation of various agencies in the pursuit of social change. The students were also inspired to participate in social innovation activities during the whole process of the course. Conclusion: This qualitative case study is significant as it provides directives for promoting social innovation through the collaboration of various actors pursuing social innovation, namely between agencies and institutions, and between the students and institutions. The course can be considered as an effective approach of social innovation education in universities. Further work is needed to build a support system to strengthen communication and collaboration between various social innovation actors including residents of the project site.