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- 저자 : Tianfang Xiao (검색결과 2 건)
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Photocatalytic oxidation of gas-phase Hg0 by carbon spheres supported visible-light-driven CuO–TiO2
Jiang Wu,Chaoen Li,Xiantuo Chen,Jing Zhang,Lili Zhao,Tianfang Huang,Tao Hu,Chong Zhang,Bu Ni,Xiao Zhou,Pankun Liang,Wenbo Zhang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.46 No.-
A simplified approach for the fabrication of CuO/TiO2@C is demonstrated. In this study, low cost CuO/TiO2@C photocatalysts (CSs loading 0.25–2 wt.%) were prepared, characterized and evaluated for gasphaseHg0 oxidation. The obtained CuO/TiO2@C photocatalysts were used to remove gaseous elementalmercury under UV light and LED respectively, and the optimum doping of content of CSs was determined. The results showed that the CuO/TiO2@C photocatalysts were highly efficient in oxidizing Hg0, reachingabove 64% when the CSs doping reached 0.5 wt.%. We have proposed that the probable mechanism bywhich CuO/TiO2@C photocatalysts remove gaseous elemental mercury: with CSs doping, CSs can act assensitizer and transfer electrons to the semiconductors, triggering the formation of very reactive radicalsto improve photocatalytic efficiency.
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Gene expression and promoter methylation of porcine uncoupling protein 3 gene
Ruiyi Lin,Weimin Lin,Qiaohui Chen,Jianchao Huo,Yuping Hu,Junxiao Ye,Jingya Xu,Tianfang Xiao 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.2
Objective: Uncoupling protein 3 gene (UCP3) is a candidate gene associated with the meat quality of pigs. The aim of this study was to explore the regulation mechanism of UCP3 expression and provide a theoretical basis for the research of the function of porcine UCP3 gene in meat quality. Methods: Bisulfite sequencing polymerase chain reaction (PCR) and quantitative real-time PCR (Q-PCR) were used to analyze the methylation of UCP3 5′-flanking region and UCP3 mRNA expression in the adipose tissue or skeletal muscle of three pig breeds at different ages (1, 90, 210-day-old Putian Black pig; 90-day-old Duroc; and 90-day-old Dupu). Results: Results showed that two cytosine-guanine dinucleotide (CpG) islands are present in the promoter region of porcine UCP3 gene. The second CpG island located in the core promoter region contained 9 CpG sites. The methylation level of CpG island 2 was lower in the adipose tissue and skeletal muscle of 90-day-old Putian Black pigs compared with 1-day-old and 210-day-old Putian Black pigs, and the difference also existed in the skeletal muscle among the three 90-day-old pig breeds. Furthermore, the obvious changing difference of UCP3 mRNA expression was observed in the skeletal muscle of different groups. However, the difference of methylation status and expression level of UCP3 gene was not significant in the adipose tissue. Conclusion: Our data indicate that UCP3 mRNA expression level was associated with the methylation status of UCP3 promoter in the skeletal muscle of pigs.
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