http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Song, Changyoon,Park, Soo-Jin,Kim, Seok The Electrochemical Society 2016 Journal of the Electrochemical Society Vol.163 No.7
<P>We prepared a novel catalyst support material consisting of polydopamine (PDA)-coated polymeric carbon nitride (g-C3N4) on a reduced graphene oxide (RGO) (PDA@CN-G) using graphene oxide, melamine and dopamine via an aqueous solution process. The resulting support possesses an excellent electrochemically accessible surface area, various porous structures, and a high nitrogen content. When platinum ions were anchored on its surface, Pt/PDA@CN-G hybrid electrocatalysts (serving as an electrode in direct methanol fuel cells) exhibited an improvement in catalytic activity (1.5 times), high poison tolerance toward CO (3.1 times), and long-term durability (1.7 times) compared to those of Pt-anchored reduced graphene oxide catalyst. The catalyst's superior performance could be attributed to its morphological characteristics, having a porous nanostructure and the synergetic effect afforded by the g-C3N4 layer and PDA coating. Thus, the hybridized composite support is potentially an effective approach to obtain a high activity and stable catalyst support material for fuel cell applications. (C) 2016 The Electrochemical Society. All rights reserved.</P>
Song, Changyoon,Jung, Yongju,Kim, Seok American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.9
<P>Platinum (Pt) deposited on graphene oxide modified g-C3N4 hybrid material (Pt/GCN) have been prepared by thermal annealing approach of graphene oxide (GO) and melamine for direct methanol fuel cells (DMFCs). The synthesis route involves the reduction of GO and polymerization of melamine, simultaneously. Analysis by SEM or TEM revealed that the morphology of products was changed from nanoparticles of melamine monomers into nanosheets of g-C3N4. The Pt/GCN exhibits well-dispersed platinum (Pt) nanoparticles (NPs) in the range of 2 to 5 nm. Moreover, it demonstrates enhanced catalytic activity such as large electrochemically active surface areas, unusual CO tolerance compared to Pt/thermal reduced graphene sheets (TRG) and Pt/C catalysts. These results found that the GCN is capable of chemically active sites for use in catalytic reaction and anchoring sites for Pt NPs decoration.</P>
양극성장애 환자용 한국어판 기분 기록 스마트폰 어플리케이션의 개발 및 임상적 적용
송가영(Kayoung Song),이세정(Saejeong Lee),윤 운(Woon Yoon),김창윤(Changyoon Kim),주연호(Yeonho Joo),이중선(Jungsun Lee),전명욱(Myong-Wuk Chon) 대한신경정신의학회 2018 신경정신의학 Vol.57 No.3
Objectives The aim of this study was to develop a Korean version of a mood chart application on an Android platform. Methods This application is based on the traditional mood chart. Eighteen adults with DSM-5 bipolar disorder were enrolled from November 2016 to March 2017. They were asked to rate their daily mood scores and severity of irritability and impulsivity for six months. Their clinicians rated their symptom severity monthly using the Clinical Global Impression-7 (CGI-7) scale. After six months, the participants completed an anonymous questionnaire regarding their satisfaction with the application. Results Of the 18 patients, one withdrew their consent from this study and six were males (35.3%) ; their mean age was 31.71±8.56 years. The mean follow-up duration was 159.12±49.45 days and the period of application use was 143.65±52.11 days. The mean total response rate was 59.45% and the mean response rate on the same day was 43.06%. The adherence to using the application decreased significantly declined over the duration since enrollment [odds ratio (OR)=1.008, p=0.008] but tended to increase according to age (OR=0.958, p=0.002). The application mood scores were correlated significantly with the manic (β=0.307, p=0.004) and depressive (β=-0.701, p<0.001) subscale, and the total (β=1.026, p=0.002) of the CGI-7 (linear mixed models). The majority of subjects agreed that the application helped them manage their symptoms (92.86%), stating that the application was easy to use (78.57%). Conclusion This application could be a valid and useful tool to monitor the mood symptoms of patients with bipolar disorder in Korea.