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- 저자 : Guo Jinlong (검색결과 4 건)
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Ze Luo,Jinlong Li,Guozhe Sui,Yan Zhuang,Dongxuan Guo,Rongping Xu,Shuang Liang,Hong Yao,Chao Wang,Shijie Chen 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.8
Developing an efficient, environmentally friendly, and pollution-free catalyst with excellent visible light catalyticactivity is a promising strategy for dye wastewater treatment. Herein, the rod-like hollow BiOClxBr1x (x=1, 0.75, 0.5,0.25, 0), with an adjustable band gap, was successfully prepared using Bi-based metal-organic framework as template. The corresponding hollow assembly and introduction of Br imparted valuable structural advantages and intrinsic characteristicsfor improved photocatalytic activity. Significantly, the degradation efficiency of BiOCl0.5Br0.5 for the RhodamineB (RhB) solution reached 92% under visible light illumination for 90 min, which is considerably higher than that ofCAU-17-derived Bi2O3 and BiOCl. Overall, these findings shed fundamental insight on constructing novel photocatalystswith excellent visible light driven photocatalytic activity and offered a new method for treating dye wastewater.
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Guozhe Sui,Yulin Zhang,Jinlong Li,Yan Zhuang,Dongxuan Guo,Ze Luo,Rongping Xu,Shuang Liang,Hong Yao,Chao Wang 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.4
Organic pollutants in dyed wastewater are hazardous to human health and the environment. The photocatalyticdegradation of pollutants is considered a green treatment with significant social and environmental benefits. Inthis study, hollow BiOCl/TiO2 nanotubes with open pores at both ends, prepared by hydrothermal synthesis, weremodified using phosphoric acid to promote photoelectron transfer. The hollow nanotubes offer an increased numberof electroactive sites, which enhances the photoelectric transfer efficiency and reduces the electron-hole recombinationrate. The modification by H3PO4 significantly optimized the photocatalytic activity of the nanotubes. The results showthat the H3PO4 modified hollow BiOCl/TiO2 (molar ratio of BiOCl to TiO2 is 0.8) nanotubes exhibited the most efficientphotocatalytic performance toward rhodamine B (RhB) with a photodegradation efficiency of up to 98.8% undervisible-light illumination. These nanotubes have broad application prospects for the effective removal of organic pollutantsfrom wastewater and can potentially inform future research on photocatalysts.
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Yixin Ding,Zongyi Guo,Yonglin Han,Jiaqi Wang,Jianguo Guo,Zequn Liu,Jinlong Zhao 한국항공우주학회 2024 International Journal of Aeronautical and Space Sc Vol.25 No.2
This paper investigates the control direction reversal issue for the attitude control design for hypersonic reentry vehicles, and proposes a novel sliding mode control law which addresses the control direction switching and strong robustness requirement simultaneously. Firstly, the disturbance observer is introduced to estimate the unmatched uncertainties in the attitude model of hypersonic reentry vehicles, and then a periodic function-involved sliding mode control is presented and the bounded stability of the closed-loop system is guaranteed via Lyapunov stability theory. The merits of the proposed method lie in that the closed-loop system is stable even under the unknown control direction reversal, and the unmatched uncertainties can be addressed by the disturbance observer. Finally, the simulation verifies the effectiveness and superiority of the proposed control.
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Wang Hengbo,Feng Meichang,Zhong Xiaoqiang,Yu Qing,Que Youxiong,Xu Liping,Guo Jinlong 한국유전학회 2023 Genes & Genomics Vol.45 No.1
Background Calmodulin (CaM) plays an essential role in binding calcium ions and mediating the interpretation of Ca2+ signals in plants under various stresses. However, the evolutionary relationship of CaM family proteins in Saccharum has not been elucidated. Objective To deduce and explore the evolution and function of Saccharum CaM family. Methods A total of 104 typical CaMs were obtained from Saccharum spontaneum and other 18 plant species. The molecular characteristics and evolution of those CaM proteins were analyzed. A typical CaM gene, ScCaM1, was subsequently cloned from sugarcane (Saccharum spp. hybrid). Its expression patterns in different tissues and under various abiotic stresses were assessed by quantitative real-time PCR. Then the green fluorescent protein was used to determine the subcellular localization of ScCaM1. Finally, the function of ScCaM1 was evaluated via heterologous yeast expression systems. Results Three typical CaM members (SsCaM1, SsCaM2, and SsCaM3) were identified from the S. spontaneum genome database. CaMs were originated from the two last common ancestors before the origin of angiosperms. The number of CaM family members did not correlate to the genome size but correlated with allopolyploidization events. The ScCaM1 was more highly expressed in buds and roots than in other tissues. The expression patterns of ScCaM1 suggested that it was involved in responses to various abiotic stresses in sugarcane via different hormonal signaling pathways. Noteworthily, its expression levels appeared relatively stable during the cold exposure in the cold-tolerant variety but significantly suppressed in the cold-susceptible variety. Moreover, the recombinant yeast (Pichia pastoris) overexpressing ScCaM1 grew better than the wild-type yeast strain under cold and oxidative stresses. It was revealed that the ScCaM1 played a positive role in reactive oxygen species scavenging and conferred enhanced cold and oxidative stress tolerance to cells. Conclusion This study provided comprehensive information on the CaM gene family in Saccharum and would facilitate further investigation of their functional characterization.
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