http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Genetic relatedness of Antimicrobial resistant Campylobacter jejuni from Livestock
Jae-Uk An(Jae-Uk An),Woohyun Kim(Woohyun Kim),Junhyung Kim(Junhyung Kim),Hee-Jin Dong(Hee-Jin Dong),Hungwui Ho(Hungwui Ho),Jong-Hyun Kim(Jong-Hyun Kim),Seongbeom Cho(Seongbeom Cho) 한국예방수의학회 2018 한국예방수의학회 학술대회자료집 Vol.2018 No.-
ZnO decorated germanium nanoparticles as anode materials in Li-ion batteries
Kim, Tae-Hee,Park, Song Yi,Lee, Tack Ho,Jeong, Jaeki,Kim, Dong Suk,Swihart, Mark T,Song, Hyun-Kon,Kim, Jin Young,Kim, Seongbeom IOP 2017 Nanotechnology Vol.28 No.9
<P>Germanium exhibits high charge capacity and high lithium diffusivity, both are the key requirements for electrode materials in high performance lithium ion batteries (LIBs). However, high volume expansion and segregation from the electrode during charge–discharge cycling have limited use of germanium in LIBs. Here, we demonstrate that ZnO decorated Ge nanoparticles (Ge@ZnO NPs) can overcome these limitations of Ge as an LIB anode material. We produced Ge NPs at high rates by laser pyrolysis of GeH<SUB>4</SUB>, then coated them with solution phase synthesized ZnO NPs. Half-cell tests revealed dramatically enhanced cycling stability and higher rate capability of Ge@ZnO NPs compared to Ge NPs. Enhancements arise from the core–shell structure of Ge@ZnO NPs as well as production of metallic Zn from the ZnO layer. These findings not only demonstrate a new surface treatment for Ge NPs, but also provide a new opportunity for development of high-rate LIBs.</P>
Size tailoring of aqueous germanium nanoparticle dispersions.
Kim, Seongbeom,Walker, Bright,Park, Song Yi,Choi, Hyosung,Ko, Seo-Jin,Jeong, Jaeki,Yun, Myoung Hee,Lee, Jeong Chul,Kim, Dong Suk,Kim, Jin Young RSC Pub 2014 Nanoscale Vol.6 No.17
<P>We demonstrate a practical route to synthesize Ge nanoparticles (NPs) in multi-gram quantities via the laser pyrolysis of GeH4 gas. The size of the as-produced Ge NPs can be precisely controlled in the range of 19.0 to 65.9 nm via a subsequent etching procedure using a dilute H2O2 solution. Stable water dispersions of Ge NPs yield particles with a Ge/GeO2 core-shell structure, however, the oxide shell can easily be removed and passivated by treatment with HCl. The feed materials used in this process are readily available and lead to non-toxic, water-based dispersions of Ge NPs. The scalability and convenience of this procedure make it attractive as a method to obtain Ge NP dispersions for use in applications such as optoelectronic devices and biosensors.</P>
Kim, Min Young,Kim, In-Jung,Im, Soon Jae,Kim, Ji Hye,Heo, Ji-Man,Song, Seung-Yeob,Kim, Jung Hyun,Moon, Seo Hyun,Cho, Seongbeom Taylor Francis Health Sciences 2014 Natural product research Vol.28 No.22
<P>A Satsuma mandarin (Citrus unshiu Marc. cv. Miyagawa) spontaneous mutant, Shinheungri, produces fruit with an abnormal red-coloured peel during ripening. The peel and pulp extracts of Shinheungri fruit were evaluated for polyphenolic contents and antioxidant activities by using various in vitro assays. Compared with those of wild type (WT), Shinheungri exhibited slightly higher total flavonoid content and antioxidant activities. The results of UPLC analyses indicate that the peel and pulp extracts of Shinheungri fruit were rich in mainly hesperidin, and they had different flavonoid composition. The present data on Shinheungri revealed a potential source of powerful flavonoids for further detailed phytochemical investigation.</P>