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Ma Cuiying,Zhang Ruiying,Zhang Guangwei,Du Huiling,Liu Jia,Liang Ruinan,Wang Zhaoguo 한국물리학회 2023 Current Applied Physics Vol.55 No.-
Bi(Zn1/2Nb2/5)O3-modified BaTiO3 ceramics were designed with formula (1‒x)BaTiO3‒xBi(Zn1/2Nb2/5)O3 (0 ≤ x ≤ 0.15) and fabricated using conventional solid-state route. With increasing Bi(Zn1/2Nb2/5)O3 concentration, grain volume increased and phase structure was transformed from tetragonal to pseudo-cubic. Dielectric properties changed from temperature-dependent to temperature-insensitive and curves were flattened. Additionally, higher pseudo-cubic phase content induced slim P-E loop and low Pr. Therefore, 0.94BaTiO3‒0.06Bi(Zn1/2Nb2/5)O3 ceramic achieved energy storage density of 1.85 J/cm3 and high energy efficiency of 91.2% under electric field of 230 kV/cm. This energy storage density was 5 times higher than that of pure BT ceramic. Meanwhile, energy storage properties of this ceramic exhibited excellent thermal stability in the range of 30–120 °C and good frequency stability over 10–100 Hz. This work provides promising alternative option in energy storage materials.
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Zheng Cao,Du Cuiying,Fu Benzhong 한국미생물·생명공학회 2022 한국미생물·생명공학회지 Vol.50 No.4
Xanthomonas arboricola pv. juglandis (Xaj) is a globally important bacterial pathogen of walnut trees that causes substantial economic losses in commercial walnut production. Although prophages are common in bacterial plant pathogens and play important roles in bacterial diversity and pathogenicity, there has been limited investigation into the distribution and function of prophages in Xaj. In this study, we identified and characterized 13 predicted prophages from the genomes of 12 Xaj isolates from around the globe. These prophages ranged in length from 11.8 kb to 51.9 kb, with between 11-75 genes and 57.82-64.15% GC content. The closest relatives of these prophages belong to the Myoviridae and Siphoviridae families of the Caudovirales order. The phylogenetic analysis allowed the classification of the prophages into five groups. The gene constitution of these predicted prophages was revealed via Roary analysis. Amongst 126 total protein groups, the most prevalent group was only present in nine prophages, and 22 protein groups were present in only one prophage (singletons). Also, bioinformatic analysis of the 13 identified prophages revealed the presence of 431 genes with an average length of 389.7 bp. Prokka annotation of these prophages identified 466 hypothetical proteins, 24 proteins with known function, and six tRNA genes. The proteins with known function mainly comprised prophage integrase IntA, replicative DNA helicase, tyrosine recombinase XerC, and IS3 family transposase. There was no detectable insertion site specificity for these prophages in the Xaj genomes. The identified Xaj prophage genes, particularly those of unknown function, merit future investigation.
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Wei Huang,Cuiying Zhou,Zhen Liu,Hao Sun,Jiaxin Du,Lihai Zhang 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.9
Polymer soil stabilisers have been shown to improve soil strength and erosion resistance, for example on slopes where topsoil can be easily eroded. However, fundamental mechanisms of soil stabilisers in soil enhancement through modifying the soil-water characteristic and microstructure of soil (e.g., distribution of pore size) have not been fully understood. This gap in understanding is not conducive to the subsequent development and engineering applications of soil stabilisers. This paper reports a series of experimental studies on the influence of nano-aqueous adhesive (NAA) in modifying the pore size distribution and water content of the soil. The results show that NAA can change the soil-water characteristic curve and has the potential to increase water retention capacity, which is essential for vegetation growth on a slope. In addition, they indicate that NAA could improve soil microstructure and pore uniformity by blocked small pores. The results also show that the NAA could reduce wilting coefficient, improve air entry value, and thereby protect vegetation, which helps stabilise the slope.
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