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Highlights: A bilayer dielectric film is prepared via coating boron nitride nanosheets (BNNSs) by solution casting on the surface of polyethylene terephthalate (PET) film. The BNNS layer acts as the efficient barrier layer to suppress the charge injection, thereby making the surface-modified PET films exhibit excellent breakdown strength and electrostatic energy storage performance. The surface coating methods are accessible and suitable for large-scale roll-to-roll process production of dielectric films. The further electrification of various fields in production and daily life makes it a topic worthy of exploration to improve the performance of capacitors for a long time, including thin-film capacitors. The discharge energy density of thin-film capacitors that serves as one of the important types directly depends on electric field strength and the dielectric constant of the insulation material. However, it has long been a great challenge to improve the breakdown strength and dielectric constant simultaneously. Considering that boron nitride nanosheets (BNNS) possess superior insulation and thermal conductivity owing to wide band gap and 2-dimensional structure, a bilayer polymer film is prepared via coating BNNS by solution casting on surface of polyethylene terephthalate (PET) films. By revealing the bandgap and insulating behavior with UV absorption spectrum, leakage current, and finite element calculation, it is manifested that nanocoating contributes to enhance the bandgap of polymer films, thereby suppressing the charge injection by redirecting their transport from electrodes. Worthy to note that an ultrahigh breakdown field strength (~ 736 MV m−1), an excellent discharge energy density (~ 8.77 J cm−3) and a prominent charge–discharge efficiency (~ 96.51%) are achieved concurrently, which is ascribed to the contribution of BNNS ultrathin layer. In addition, the modified PET films also have superior comprehensive performance at high temperatures (~ 120 °C). The materials and methods here selected are easily accessible and facile, which are suitable for large-scale roll-to-roll process production, and are of certain significance to explore the methods about film modification suitable for commercial promotion. [ABSTRACT FROM AUTHOR]

The suppressor of cytokine signaling 1 (SOCS-1), as the name implies, is a member of proteins that regulate cytokine signaling pathways by inhibiting the events of key tyrosine phosphorylation on cytokine receptors and signaling molecules such as Janus kinase family members. Although mammalian SOCS-1 homologues were characterized in several species, no similar research work has been reported in fish yet. In this paper, we initially cloned the SOCS-1 genes from Tetraodon nigroviridis and Danio rerio, and identified other two SOCS-1 genes from Fugu rubripes and Gasterosteus aculeatus. The results showed that the fish SOCS-1-encoding genes consist of two exons and a single intron, a typical characteristic of SOCS family in gene organization. Moreover, two alternatively spliced transcripts that encoded 220 and 196 amino acids were obtained in T. nigroviridis, proving the distinct existence of alternative splicing in fish SOCS-1 different from higher vertebrates. By reverse transcriptase polymerase chain reaction (PCR) and real-time quantitative PCR, gene expression studies indicated that both two alternatively spliced transcripts of Tetraodon SOCS-1 were expressed extensively in major tissues as we examined and their corresponding expression levels could be strikingly raised at 3 h postinjection with lipopolysaccharide, which strongly suggested that SOCS-1 proteins in fish might be involved in inflammatory responses. This is the first report of cloning and characterization of SOCS-1 complementary deoxyribonucleic acids and genes in fish. [ABSTRACT FROM AUTHOR]