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496 results on '"Zhang, Guobin"'

2. Effects of silicon on water metabolism and photosynthetic characteristics of Cucurbita pepo L. seedlings under salt stress

Author

WANG Guoshuai, ZHAO Jianuo, WEI Haotai, WANG Peng, LUO Shilei, and ZHANG Guobin

Subjects
cucurbita pepo l., silicon, salt stress, water metabolism, photosynthetic characteristics, Biology (General), QH301-705.5, Botany, QK1-989
Abstract

[ Objective ] This study aims to explore the protective mechanism of exogenous silicon on water metabolism and photosynthesis of Cucurbita pepo L. seedlings under salt stress , and to provide theoretical reference for salt resistance of C . pepo L.. [ Methods ] Using “ Hanlu 7042 ” C . pepo L. variety as the test material and hydroponic experiment , four treatments were set : Control , silicon treatment ( 0.3 mmol / L Na 2 SiO 3 · 9H 2 O ), salt stress ( 150 mmol / L NaCl ), salt stress+silicon treatment ( 0.3 mmol / L Na 2 SiO 3 · 9H 2 O+150 mmol / L NaCl ) . After 10 days of treatment , root morphology and activity , leaf water con- tent and water potential , photosynthetic parameters , chlorophyll content , chlorophyll fluorescence param- eters , and expression of aquaporin genes were determined. [ Results ] Salt stress inhibited the growth of C . pepo L. seedling roots , and decreased root activity , leaf water content , and leaf water potential and tran- spiration. Salt stress also affected the photosynthetic system , net photosynthetic rate , stomatal conduct- ance , chlorophyll content , and PSⅡ photochemical efficiency. Exogenous silicon improved the root mor- phology and activity of C . pepo L. seedlings under salt stress , also improved plant water status , and leaf water content , leaf water potential , and transpiration by promoting the expression of genes PIP1 ; 2 , PIP1 ; 3 , PIP1 ; 5 , PIP1 ; 7 , PIP2 ; 1 , PIP2 ; 4 , PIP2 ; 6 , and PIP2 ; 8 , PIP2 ; 9 and PIP2 ; 12 . The exogenous silicon also increased the stomatal conductance , chlorophyll content , net photosynthetic rate , PSⅡ maximum photochemical efficiency , PSⅡ actual photochemical efficiency , and photochemical quenching coefficient , decreased intercellular carbon dioxide concentration and non-photochemical quench- ing coefficient , enhanced the photosynthesis of seedlings under salt stress. [ Conclusion ] 0.3 mmol / L sili- con could improve the water metabolism and photosynthesis of C . pepo L. seedlings under salt stress , and thus enhance the ability of C . pepo L. seedlings to resist salt stress.

Published
2024
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3. Interfacial Charge-transfer Excitonic Insulator in a Two-dimensional Organic-inorganic Superlattice

Author

Liu, Yang, Zhu, Hongen, Lv, Haifeng, Guo, Yuqiao, Zhao, Yingcheng, Lin, Yue, Tai, Xiaolin, Zhao, Jiyin, Yuan, Bingkai, Liu, Yi, Zhang, Guobin, Sun, Zhe, Wu, Xiaojun, Xie, Yi, and Wu, Changzheng

Subjects
Condensed Matter - Materials Science
Abstract

Excitonic insulators are long-sought-after quantum materials predicted to spontaneously open a gap by the Bose condensation of bound electron-hole pairs, namely, excitons, in their ground state. Since the theoretical conjecture, extensive efforts have been devoted to pursuing excitonic insulator platforms for exploring macroscopic quantum phenomena in real materials. Reliable evidences of excitonic character have been obtained in layered chalcogenides as promising candidates. However, owing to the interference of intrinsic lattice instabilities, it is still debatable whether those features, such as charge density wave and gap opening, are primarily driven by the excitonic effect or by the lattice transition. Herein, we develop a novel charge-transfer excitonic insulator in organic-inorganic superlattice interfaces, which serves as an ideal platform to decouple the excitonic effect from the lattice effect. In this system, we observe the narrow gap opening and the formation of a charge density wave without periodic lattice distortion, providing visualized evidence of exciton condensation occurring in thermal equilibrium. Our findings identify spontaneous interfacial charge transfer as a new strategy for developing novel excitonic insulators and investigating their correlated many-body physics.

Published
2022

4. Ultrahigh ion diffusion in oxide crystal by engineering the interfacial transporter channels

Author

Li, Liang, Hu, Min, Hu, Changlong, Li, Bowen, Zhao, Shanguang, Zhang, Guobin, Li, Liangbin, Jiang, Jun, and Zou, Chongwen

Subjects
Condensed Matter - Materials Science, Physics - Chemical Physics
Abstract

The mass storage and removal in solid conductors always played vital role on the technological applications such as modern batteries, permeation membranes and neuronal computations, which were seriously lying on the ion diffusion and kinetics in bulk lattice. However, the ions transport was kinetically limited by the low diffusional process, which made it a challenge to fabricate applicable conductors with high electronic and ionic conductivities at room temperature. It was known that at essentially all interfaces, the existed space charge layers could modify the charge transport, storage and transfer properties. Thus, in the current study, we proposed an acid solution/WO3/ITO structure and achieved an ultrafast hydrogen transport in WO3 layer by interfacial job-sharing diffusion. In this sandwich structure, the transport pathways of the protons and electrons were spatially separated in acid solution and ITO layer respectively, resulting the pronounced increasing of effective hydrogen diffusion coefficient (Deff) up to 106 times. The experiment and theory simulations also revealed that this accelerated hydrogen transport based on the interfacial job-sharing diffusion was universal and could be extended to other ions and oxide materials as well, which would potentially stimulate systematic studies on ultrafast mixed conductors or faster solid-state electrochemical switching devices in the future., Comment: 23 pages, 5 figures

Published
2022
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16. Exhaustive drainage versus fixed-time drainage for chronic subdural hematoma after one-burr hole craniostomy (ECHO): study protocol for a multicenter randomized controlled trial

Author

Wu, Liang, Ou, Yunwei, Zhu, Bingcheng, Guo, Xufei, Yu, Xiaofan, Xu, Long, Li, Jinping, Feng, Enshan, Li, Huaqing, Wang, Xiaodong, Chen, Huaqun, Sun, Zhaosheng, Liu, Zaofu, Yang, Dawei, Zhang, Hongbing, Liu, Zhigang, Tang, Jie, Zhao, Shangfeng, Zhang, Guobin, Yao, Jiemin, Ma, Dongming, Sun, Zelin, Zhou, Hui, Liu, Baiyun, and Liu, Weiming

Published
2023
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35. Effects of intensive blood pressure lowering on cerebral ischaemia in thrombolysed patients: insights from the ENCHANTED trial

Author

Chen, Chen, Ouyang, Menglu, Ong, Sheila, Zhang, Luyun, Zhang, Guobin, Delcourt, Candice, Mair, Grant, Liu, Leibo, Billot, Laurent, Li, Qiang, Chen, Xiaoying, Parsons, Mark, Broderick, Joseph P., Demchuk, Andrew M., Bath, Philip M., Donnan, Geoffrey A., Levi, Christopher, Chalmers, John, Lindley, Richard I., Martins, Sheila O., Pontes-Neto, Octavio M., Venturelli, Paula Muñoz, Olavarría, Verónica, Lavados, Pablo, Robinson, Thompson G., Wardlaw, Joanna M., Li, Gang, Wang, Xia, Song, Lili, and Anderson, Craig S.

Published
2023
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41. Pulmonary redox imbalance drives early fibroproliferative response in moderate/severe coronavirus disease-19 acute respiratory distress syndrome and impacts long-term lung abnormalities

Author

Yang, Chun, primary, Tan, Yuanyuan, additional, Li, Zihao, additional, Hu, Lei, additional, Chen, Yuanyuan, additional, Zhu, Shouliang, additional, Hu, Jiawei, additional, Huai, Tingting, additional, Li, Mingqing, additional, Zhang, Guobin, additional, Rao, Dewang, additional, Fei, Guanghe, additional, Shao, Min, additional, and Ding, Zhenxing, additional

Published
2024
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