The development of green and sustainable energy is important
for
the current society to address global climate change. Direct ethanol
fuel cells have attracted extensive attention at home and abroad due
to their environmentally friendly features, high energy density, and
ease of management. Herein, a class of alloyed PdAg catalysts with
a controllable alloying degree as well as lattice expansion were prepared.
The PdAg nano-dendritic alloys (NDAs) exhibit “volcano-type”
behavior, where the Pd5Ag1 NDA with a tensile
value of 1.0% possesses the highest peak current density (1950 mA
mg–1) for ethanol oxidation reaction (EOR), controlled
by a dynamic balance of active and blocking species adsorption energy.
This electrocatalytic behavior mainly arises from the formation of
a crystalline nano-dendritic structure and the synergistic effect
between Pd and Ag. Moreover, the kinetics of EOR determined that higher
electrocatalytic temperatures and higher concentrations of OH– or C2H5OH are favorable for
EOR.
Transfection of cDNA in 3'untranslated region of human nuclear factor for interleukin-6 (NF-IL6 3'UTR) induced tumor suppression in a human hepatoma cell line. cDNA array analysis was used to reveal changes in gene expression profile leading to tumor suppression The results indicate that this suppression was not due to activation of dsRNA-dependent protein kinase, nor to inactivation of oncogenes; rather, all the changes in expression of known genes, induced by NF-IL6 3'UTR cDNA may be ascribed to the suppression of cellular malignancy. Therefore, our results imply that this 3'untranslated region may have played role of a regulator of gene expression profile.
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