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Yiwen Hong,Jingxia Yang,Jingli Xu,최원묵 한국물리학회 2019 Current Applied Physics Vol.19 No.6
Hierarchical nanostructured NiO (h-NiO) microtubes were prepared by a simple wet-chemical synthesis without the use of template or surfactant, followed by the calcination of α-Ni(OH)2 precursor. The structural characterization of the h-NiO microtubes were performed by scanning microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD), the results of which indicated that the obtained h-NiO microtubes are covered by the nanosheet grown perpendicularly on the tube surface. The unique hierarchical nanostructure of h-NiO microtubes with high surface area and many voids facilitates the electrochemical reaction as well as the short ion and electron transport pathway. Therefore, as anode electrode of Li-ion batteries, the h- NiO microtubes deliver largely enhanced cycle capacity of 770 mAh·g−1 at a current density of 0.5 C after 200 cycles with high columbic efficiency, compared to the NiO rods. These results suggest that the h-NiO microtubes can be a promising anode material for Li-ion batteries.
AtFes1A is essential for highly efficient molecular chaperone function in Arabidopsis
Can Fu,Jingxia Zhang,Xiaxia Liu,Wenwen Yang,유홍빈,Jian Liu 한국식물학회 2015 Journal of Plant Biology Vol.58 No.6
AtFes1A is a co-chaperone of heat shock protein 70 (Hsp70), which is a key component of plant molecular chaperone systems. Plants without AtFes1A generally present defective thermotolerance. However, the underlying mechanism of this molecule has remained elusive. In the present study, we used thermolabile firefly luciferase as a molecular reporter to evaluate the efficiency of the plant molecular chaperone system. Renaturation of firefly luciferase in atfes1a mutants lagged far behind that of wild-type (WT) plants. In contrast, in vitro AtFes1A did not affect renaturation of firefly luciferase, whereas Hsp70 did significantly. We propose that AtFes1A is indirectly involved in plant molecular chaperone systems.