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Yun, Jin‐,Mun,Yeo, Jun‐,Seok,Kim, Juhwan,Jeong, Hyung‐,Gu,Kim, Dong‐,Yu,Noh, Yong‐,Jin,Kim, Seok‐,Soon,Ku, Bon‐,Cheol,Na, Seok‐,In WILEY‐VCH Verlag 2011 Advanced Materials Vol.23 No.42
<P>Solution‐processable reduced graphene oxide as a hole‐transporting layer for highly efficient and stable organic solar cells is reported on page 4923 by Dong‐Yu Kim, Seok‐In Na, and co‐workers. Introduction of a newly reduced graphene oxide by simple solution processing into solar cells dramatically raises the cell efficiency and cell life‐time. The results will allow full use of chemically reduced graphene and will advance the realization of carbon‐based printable optoelectronic devices. </P>
윤유성,권오헌,고성석 한국산업안전학회 2002 한국안전학회지 Vol.17 No.2
Recently the car and elevator accidents as well as the fire, explosion and collapse increased. The passenger elevator accident from 1993 year to 2001 has about 56.7% of total accidents and the human victims of 180according to the Korea Elevator Safety Institute. Accident cause and prevention were investigated for the elevator having the fall, impact and narrowness accident types. The prevention and protection methods of the elevator accident from analysis results were suggested by comparing and analogizing the accident statistics about the accident investigation of the passenger elevator according to the elevator accidents.
유산소성 운동이 여성 노인들의 체력과 반응시간에 미치는 영향
이규문,최종환,류석윤 忠北大學校 平生體育硏究所 1998 平生體育硏究所 論文集 Vol.10 No.-
This study was performed to investigate the effect of aerobic exercise program on physical fitness and whole body reaction time, and to see the relationship between the level of physical fitness and level of whole body reaction time in the elderly women. The study subjects were consisted of 44 old women with mean age of 67.3 years. They were tested on their physical fitness and whole body reaction time level at the begin and end of the 12-week program(pre-post tests). Assessment included measures of strength, power, balance, agility, flexibility, %body fat, endurance, and body simple and choice reaction times in the elerly women. For data analysis, mean and standard deviation scores were calculated, and paired t-test and person's correlation coefficient were used. The results were follow: 1. After the aerobic exercise program, power, balance, agility, flexibility, %body fat, and endurance were significantly imroved in the elerly women. 2. After the aerobic exercise program, body simpel and choice reaction times were also significantly improved in the elderly women. 3. After the aerobic exercie program, old womens' simple and choice reaction time of whole body were significantly related to strength, power, balance, agility, and flexibility. In conclusion, even though the elderly women had participated in the aerobic exercise program for the short period time(3 months), they showed the improved physical fitness and whole body reactin time, which are related to physical health.
(+)-Chromen 유도체의 합성 및 이들의 Wnt/β-catenin pathway 억제 활성 평가
이지현,조수현,윤은주,오유석,송규용 충남대학교 약학대학 의약품개발연구소 2013 藥學論文集 Vol.28 No.-
(+)-Decursin and GCK062, which is decursin derivative, showed strong inhibitory activity for Wnt/β-catenin signaling and suppressed concentration-dependently PC3 cell growth. These compounds have pyranocoumarin ring as backbone and acryloyl group as side chain. In this study, we introduced (+)-chromen ring as backbond, that is more simplified than pyranocoumarin, and synthesized (+)-chromen derivatives. As a results, in most cases, (+)-chromen derivatives disappeared or lowered the inhibitory activities for Wnt/β -catenin signaling. However (+)-chromen derivative (SLC-G005, 92.0%), introduced 3,4-dihydroxycinnamoyl group, showed potent inhibitory activity, not as much as GCK062 (99.5%).
Yun, Jin‐,Mun,Yeo, Jun‐,Seok,Kim, Juhwan,Jeong, Hyung‐,Gu,Kim, Dong‐,Yu,Noh, Yong‐,Jin,Kim, Seok‐,Soon,Ku, Bon‐,Cheol,Na, Seok‐,In WILEY‐VCH Verlag 2011 Advanced Materials Vol.23 No.42
<P><B>The preparation of a reduced graphene oxide (pr‐Go) is with a novel p‐TosNHNH2 reductant</B> is demonstrated for use as an efficient anode interfacial layer for high‐performance and highstability organic solar cells (OSCs). The efficiency of the cells with pr‐GO is highly comparable to those of the PEDOT:PSSbased devices. Furthermore, the pr‐GO based OSCs show a much longer cell life time in air stability tests in comparison with PEDOT:PSS‐based cells.</P>
대퇴골 골절 환자에서 발생한 급성신손상의 위험인자와 임상경과
윤유선 ( Yu-seon Yun ),유지한 ( Ji Han Yu ),김지희 ( Ji Hee Kim ),권기욱 ( Ki Wook Kwon ),이홍석 ( Hong Seok Lee ),이영복 ( Yeong Bok Lee ),박원종 ( Won Jong Bahk ),김영옥 ( Young Ok Kim ) 대한내과학회 2013 대한내과학회지 Vol.84 No.6
Background/Aims: Femoral fracture occurs most often in elderly patients and is highly associated with medical problems such as acute kidney injury (AKI); however no reports of AKI in femoral fracture patients have been published. This study was performed to identify risk factors and the clinical course of AKI in patients with femoral fracture. Methods: We retrospectively evaluated the medical records of 110 patients with femoral fracture between November 2006 and December 2011 at Uijeongbu St. Mary`s Hospital. We investigated the incidence and clinical course of AKI in femoral fracture patients and compared the clinical findings between AKI and normal kidney function (NKF) groups. Results: Of the 110 femoral fracture patients, AKI was observed in 19 (17.3%). The peak serum creatinine level in patients with AKI was 2.59 ± 1.57 mg/dL. Two of 19 patients with AKI died and two progressed to chronic kidney disease. When compared to the NKF group, the AKI group had a higher incidence of elevated lactate dehydrogenase (LDH) (63.2% vs. 34.1%, p = 0.020), erythrocyte sedimentation rate (ESR) (31.6% vs. 6.6%, p = 0.008), and C-reactive protein (57.9% vs. 46.2%, p = 0.042). The AKI group also had a longer hospitalization duration, and more patients were prescribed an angiotensin-converting-enzyme (ACE) inhibitor than in the NKF group. Multivariate analysis demonstrated elevated LDH, ESR and ACE inhibitor prescriptions as independent risk factors for AKI in patients with a femoral fracture. Conclusions: The incidence of AKI in patients with a femoral fracture was 17.3%, and AKI was associated with a longer clinical course. We recommend monitoring of laboratory findings
윤유석(Yun, Yu Seok),이상영(Lee, Sang Young),강방훈(Kang, Bang Hun) 인문콘텐츠학회 2011 인문콘텐츠 Vol.0 No.21
??오늘날 우리의 농촌 문화에는 전통지식, 민족정체성, 진정성 있는 삶의 모습, 다양한 자연생태자원 등의 자원들이 보전되어 있다. 이러한 자원이 문화적인 상품과 서비스로 개발될 경우 농촌의 가치와 의미는 확장될 것으로 기대된다. 이 논문은 농촌 문화의 상품과 서비스를 문화콘텐츠의 관점에서 해석하고 향후 농촌의 활성화를 위해 어떤 방향으로 문화콘텐츠가 개발되어야 하는가를 논하고 있다.<br/> ??논의를 위해 먼저 농촌과 문화콘텐츠의 관계를 농촌 활성화의 측면에서 접근함으로써 농촌의 문화콘텐츠가 농업, 농민, 농촌의 발전을 도모할 수 있는 콘텐츠, 즉 농촌에 대한 농촌에 의한 농촌을 위한 콘텐츠여야 함을 전제하고 있다. 이러한 전제하에서 오늘날 농촌에서 제공되고 있는 재화와 서비스를 문화콘텐츠의 관점에서 고찰함으로써 농촌의 삶과 문화가 사회구성원들에게 어떠한 방식으로 향유되고 있는가를 살펴보았다.<br/> ??이러한 고찰을 바탕으로 농촌의 활성화를 위한 문화콘텐츠 개발 방안을 제시한바, 첫째, 내지인과 외지인이 문화주체가 돼 능동적으로 문화활동을 할 수 있도록 지원하는 것이 필요하며, 둘째, 그들이 경험을 통해 체화한 농촌의 의미와 가치를 콘텐츠로 창작하고 향유할 수 있도록 해야 하며, 셋째, 농촌이 이들 문화주체들이 문화활동을 하며 놀 수 있는 공간, 즉 놀이터가 되게 함으로써 다양한 창작, 여가, 예술, 오락 활동이 이루어지게 해야 한다고 제안하고 있다.<br/> ??이러한 논의를 통해 향후 농촌이 다양한 문화주체들의 문화활동 공간으로 활성화되고 여기에서 나오는 창작표현물들이 콘텐츠화 됨으로써 순환적인 콘텐츠의 생산과 향유가 이루어지길 기대해본다. In our rural life and culture, there are traditional knowledge, national identity, authentic life style and its natural ecology. If these resources were developed to cultural goods and services, the rural could be more significant and valuable to us. The aim of this paper is to discuss the way to develop the cultural goods and services for the rural revitalization in terms of the cultural contents which are goods and services on the media containing a message. At first, this paper argues that cultural contents demanded a rural society are for the rural, of the rural and by the rural, because that could have an effect on rural revitalization. And this study regarding the goods and services of rural as the cultural contents have examined how they make people enjoy the culture of rural. And then we have suggested how to develop the cultural contents for rural. Firstly it needs to support the people who is willing to expressing their own experience to cultural contents as the cultural subject. It’s not matter where they live, for anyone can be a subject if they create something. Secondly, let they enjoy and express something having a message of the rural. Finally, make the rural to be a playground which a people can play creating their contents, spending their free time, doing an artistic or recreational activity and so on. The paper concludes by arguing that more expressions in form of analog contents or digital contents like published papers, web pages, games, movies should be made by many people who have experience and recognize the value of the rural.
Fucoidan Promotes the Reconstruction of Skin Equivalents
Song, Yu Seok,Li, Hailan,Balcos, Marie Carmel,Yun, Hye-Young,Baek, Kwang Jin,Kwon, Nyoun Soo,Choi, Hye-Ryung,Park, Kyoung-Chan,Kim, Dong-Seok The Korean Society of Pharmacology 2014 The Korean Journal of Physiology & Pharmacology Vol.18 No.4
In this study we investigated the effects of fucoidan on the proliferation of fibroblasts and the reconstruction of a skin equivalent (SE). Fucoidan significantly stimulated the proliferation of CCD-25Sk human fibroblasts and Western blot analysis demonstrated that fucoidan markedly increased the expression of cyclin D1 and decreased the expression of p27. Fucoidan was used to reconstruct SE. Immunohistochemical staining showed that the addition of fucoidan to dermal equivalents increased expression of proliferating cell nuclear antigen (PCNA) and p63. In addition, expression of ${\alpha}6$-integrin was significantly increased by fucoidan, whereas expression of ${\beta}1$-integrin, type 1 collagen, elastin, fibronectin did not markedly change. These results suggest that fucoidan has positive effects on epidermal reconstruction and will therefore be beneficial in the reconstruction of SE.
Development of an integrated breeding platform for data-driven crop improvement
Yeisoo Yu(Yeisoo Yu),SeungWook Lee(SeungWook Lee),Suhyeon Park(Suhyeon Park),Changyuel Lee(Changyuel Lee),Youngsil Kim(Youngsil Kim),Daegyu Kim(Daegyu Kim),Seok Jae Yun(Seok Jae Yun),Dae Kwan Kim(Da 한국육종학회 2023 한국육종학회 공동학술발표집 Vol.2023 No.-