http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lee, Wonjoo,Mini, Sun-Ki,Cai, Gangri,Hwang, Yunhee,Baek, Sujin,Cho, Byung Won,Lee, Soo-Hyoung,Han, Sung-Hwan American Scientific Publishers 2009 Journal of Nanoscience and Nanotechnology Vol.9 No.12
<P>This paper reports the use of Au nanoparticles (NPs) as electron transfer bridge layers to improve the photocurrent of viologen/Ru complex-based photoelectrochemical cells. The Ru complex/ viologen/Au NPs on electrodes were prepared using self-assembled monolayers. The cell system showed an excellent photocurrent of 25 nA/cm2 under the 1.5 air mass condition (I = 100 mW/cm2), which is five times greater than Au NPs due to the reduced recombination reaction.</P>
Lee, Jiyong,Menamparambath, Mini Mol,Hwang, Jae-Yeol,Baik, Seunghyun Wiley-VCH 2015 ChemSusChem Vol.8 No.14
<P>The low electrical conductivity of spiro-OMeTAD hole transport layers impedes further enhancements of the power conversion efficiency (PCE) of perovskite solar cells. We embedded multiwalled carbon nanotubes (MWNTs) in spiro-OMeTAD (spiro-OMeTAD/MWNTs) to increase carrier mobility and conductivity. However, direct electrical contact between CH3 NH3 PbI3 and the MWNTs created pathways for undesirable back-electron transfer, owing to the large work function of MWNTs, limiting enhancements of the PCE. A hierarchical structure of pure spiro-OMeTAD and spiro-OMeTAD/MWNTs was designed to block back-electron transfer and fully exploit the enhanced charge transport of spiro-OMeTAD/MWNTs. The enhanced fill factor, short-circuit current density, open-circuit voltage, and PCE (15.1?%) were achieved by using this hierarchical hole transport layer structure (MWNT concentration=2?wt?%). The perovskite solar cells were fabricated by a low-temperature solution process, further decreasing their per-Watt cost.</P>
Jeon, Yong-Joon,Kim, Jin Hyun,Shin, Jong-Il,Jeong, Mini,Cho, Jaewook,Lee, Kyungho Korean Society for Molecular and Cellular Biology 2016 Molecules and cells Vol.39 No.2
Eukaryotic translation initiation factor 2 alpha ($eIF2{\alpha}$), which is a component of the eukaryotic translation initiation complex, functions in cell death and survival under various stress conditions. In this study, we investigated the roles of $eIF2{\alpha}$ phosphorylation in cell death using the breast cancer cell lines MCF-7 and MCF-7/ADR. MCF-7/ADR cells are MCF-7-driven cells that have acquired resistance to doxorubicin (ADR). Treatment of doxorubicin reduced the viability and induced apoptosis in both cell lines, although susceptibility to the drug was very different. Treatment with doxorubicin induced phosphorylation of $eIF2{\alpha}$ in MCF-7 cells but not in MCF-7/ADR cells. Basal expression levels of Growth Arrest and DNA Damage 34 (GADD34), a regulator of $eIF2{\alpha}$, were higher in MCF-7/ADR cells compared to MCF-7 cells. Indeed, treatment with salubrinal, an inhibitor of GADD34, resulted in the upregulation of $eIF2{\alpha}$ phosphorylation and enhanced doxorubicin-mediated apoptosis in MCF-7/ADR cells. However, MCF-7 cells did not show such synergic effects. These results suggest that dephosphorylation of $eIF2{\alpha}$ by GADD34 plays an important role in doxorubicin resistance in MCF-7/ADR cells.
Rxfp2, an Insl3 receptor might be associated with the failure of spermatogenesis in Phf7 ko mice
Jieun Kim,Eun-Kyoung Kim,Hae-Rim Kim,Sang-Mi Cho,Danbi Ka,Hoyoung Ghang,Seulgi Park,Mini Lee,Faiz Ur Rahman,Ki-Hoon Lee,Won-Kee Yoon,Young-Suk Won,Hyoung-Chin Kim,Kyoung-Chul Choi,Ki-Hoan Nam 한국실험동물학회 2021 한국실험동물학회 학술발표대회 논문집 Vol.2021 No.7
PHD finger protein 7 (Phf7) is a member of the PHF family, which contain the PHD domain known as a histone methylation reader and RING domain known as a E3 ubiquitin ligase. Phf7 is expressed testis, specifically in germ cells and Leydig cells but not in Sertoli cells. The deficiency of Phf7 induces male infertility. And it was found that Phf7 acts as a histone H2A E3 ligase in histone-to-protamine exchange during spermatogenesis. Until now, most studies on Phf7 have been focused on spermatogenesis. Here, we tried to found any phenotypes other than male infertility in the Phf7 Ko mice. We found that there are growth-retardation and reduction of bone mineral density in Phf7 knockout (ko) mice. We also tried to found any mechanism that may associated with abnormal spermatogenesis in the Phf7 ko mice. It is known that Rxfp2 is expressed in the postmeiotic germ cells in testis and that Rxfp2 with Insl3, a hormone released from Leydig cells constitute a paracrine hormone-receptor system in testis. Therefore, we determined the expression level of Insl3 and Rxfp2 in testis of Phf7 ko mice. We found that the Insl3 mRNA level was higher in the ko mice, but the Rxfp2 mRNA expression level was reduced in the mutant mice then wild mice. In conclusion, we suggest that the failure of spermatogenesis observed in Phf7 ko mice might related with the reduced expression of Rxfp2 in the developing germ cells.
The sex and age dependant differences in ECG values in C57BL6/N mice
Danbi Ka,Jieun Kim,Eun-Kyoung Kim,Hae-Rim Kim,Sang-Mi Cho,Seulgi Park,Faiz Ur Rahman,Mini Lee,Ki-Hoon Lee,Hoyoung Ghang,Won-Kee Yoon,Young-Suk Won,Hyoung-Chin Kim,Kyoung-Chul Choi,Ki-Hoan Nam 한국실험동물학회 2021 한국실험동물학회 학술발표대회 논문집 Vol.2021 No.7
Eelectrocardiogram (ECG) is a surface recording of the electric current passing through the heart, revealing the electrical activity associated with each heartbeat, and allowing visualization of the electrical state of the heart. In a state of consciousness, normal rat heart rates range from 500 to 700 beats per minute (bpm). ECG reflects the cycle of the heart and consists of P, Q, R, S and T waves. The non-invasive ECG system has the advantage of acquiring information not only on heart rate, but also on heart rate variability, RR, QT and PR intervals, as well as acquiring cardiac abnormalities in conscious animals. In this study, we conducted experiments ECG analysis with 12 weeks and 56 weeks aged male and female C57BL/6N mice. We compared the ECG values between male and female mice and between 12 weeks and 56 weeks aged mice, comparing age and gender differences. There were sex differences in HR and RR in 12 weeks aged mice and in HR and QRS in 56 weeks aged mice. We also found age dependant differences in QRS, ST, HR and RR in male mice and in PR, ST and QTc in female mice. These result indicate that there is age and sex differences in ECG values.