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Popcorn-like PtAu nanoparticles were fabricated and further supported on rGO by ultrasonication. The as-prepared nanocomposites showed an enhanced electrocatalytic performance for ORR and methanol oxidation.

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PdM (M = Pt, Co, and Ni) nanodendrites were fabricated by a co-reduction strategy. The nanodendrites displayed the enhanced catalytic activities and stabilities for methanol and ethylene glycol oxidation.

An 8‐wk feeding trial was conducted to evaluate the effects of replacing fishmeal with rapeseed meal (RM) on growth, feed utilization, antioxidant capacity, nonspecific immunity, and growth‐related gene expression of Pseudobagrus ussuriensis (initial body weight 14.0 g). Six isonitrogenous and isoenergetic diets were formulated to contain RM to replace fishmeal at 0 (R0), 10 (R10), 20 (R20), 30 (R30), 40 (R40), and 50% (R50), respectively. The results showed that final body weight, specific growth rate (SGR), feed intake, feed efficiency, and protein efficiency ratio decreased with increasing dietary RM levels. Fish fed the diets with 30% or more fishmeal replaced by RM had significantly lower SGR (P < 0.05). The apparent digestibility coefficient of dry matter, crude protein, and crude lipid decreased with increasing dietary RM levels. Similar trends were observed in immune parameters and the activities of superoxide dismutase and catalase. However, an increasing trend was observed in malondialdehyde. Fish fed the diets with 30% or more fishmeal replaced by RM had significantly lower hepatic aspartate aminotransferase and alanine aminotransferase activities than the control group R0 (P < 0.05). Hepatic insulin‐like growth factor I (IGF‐I) gene expression level significantly decreased in fish fed Diet R50 compared with the R10 group (P < 0.05). However, the IGF‐I gene expression level in muscles significantly increased in fish fed Diet R50 compared with other groups (P < 0.05). Broken‐line model analysis based on SGR against dietary RM substitution level indicated that the appropriate substitution level was 17%.

In this study, we reported a significant difference in the supramolecular hydrogelation of newly discovered NI-GFF (NI-Gly-l-Phe-l-Phe) and NI-FFG (NI-l-Phe-l-Phe-Gly) on the basis of their phase diagrams. With a small difference in the peptide chain between NI-GFF and NI-FFG, we observed a significant difference in their self-assembly properties; NI-GFF formed a stable gel at neutral pH, whereas NI-FFG did not, under the same conditions. From spectroscopic and computational studies, intermolecular π-π interactions and extended hydrogen bonding interactions might reinforce the intermolecular interactions of NI-GFF, which may facilitate the formation of the self-assembled nanostructures and the hydrogel. In addition, the aggregation-induced emission (AIE)-active NI-GFF reveals relatively good biocompatibility compared with that of NI-FFG for two commonly used cell lines, suggesting that it is a promising candidate for use as a supramolecular material in biomedical applications. Our results highlight the importance of tripeptide sequences in a self-assembling hydrogel system.