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Arabidopsis Blue light Receptor Phototropin 1 Undergoes Blue light-Induced Activation in Membrane Microdomains

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Molecular Plant 2018年第6期11卷 846-859页

作者： Yiqun Xue Jingjing Xing Yinglang Wan Xueqin lv Lusheng fan Yongdeng Zhang Kai Song li Wang Xiaohua Wang Xin Deng Frantisek Baluska John M. Christie Jinxing lin Institute of Botany Chinese Academy of Sciences Beijing 100093 China University of Chinese Academy of Sciences Beijing 100049 China Department of Botany and Plant Sciences University of California Riverside CA 92521 USA Department of Cell Biology Yale University School of Medicine New Haven CT 06520 USA Institute of Cellular and Molecular Botany University of Bonn 53115 Bonn Germany Institute of Molecular Cell and Systems Biology University of Glasgow Bower Building Glasgow G12 8QQ UK College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 China

Phototropin （phot）-mediated signaling initiated by blue light （BL） plays a critical role in optimizing photosyn- thetic light capture at the plasma membrane （PM） in plants. However, the mechanisms underlying the regu- lation of phot activity at the PM in response to BL remain largely unclear. In this study, by single-particle tracking and stepwise photobleaching analysis of photl-GFP proteins we demonstrated that in the dark photl proteins remain in an inactive state and mostly exist as monomers. Dimerization and the diffusion rate of photl-GFP increased in a dose-dependent manner in response to BL. In contrast, BL did not affect the lateral diffusion of kinase-inactive photlD806N-GFP but did enhance its dimerization, suggesting that photl dimerization is independent of phosphorylation. Forster resonance energy transfer-fluorescence life- time imaging microscopy analysis revealed that the interaction between photl-GFP and a marker of sterol- rich lipid environments, AtRem1.3-mCherry, was enhanced with increased time of BL treatment. However, this BL-dependent interaction was not obvious in plants co-expressing phot1D806N-GFP and AtRem1.3- mCherry, indicating that BL facilitates the translocation of functional photl-GFP into AtRem1.3-1abeled microdomains to activate phot-mediated signaling. Conversely, sterol depletion attenuated photl-GFP dynamics, dimerization, and phosphorylation. Taken together, these results indicate that membrane micro- domains act as organizing platforms essential for the proper function of activated photl at the PM.

关键词： photl VA-TIRFM spatiotemporal dynamics blue light signaling membrane microdomains

An ultrafast carrier dynamics system from oxygen vacancies modified SnO_(2)QDs and Zn_(2)SnO_(4)heterojunction for deeply photocatalytic oxidation of NO

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Journal of Materials Science & Technology 2023年第34期165卷 85-93页

作者： Yuhan li Min Zhang Bangfu Chen Ping Ouyang Youyu Duan Kangle lv fan Dong Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing 400067China Nanchang Institute of Technology Nanchang 33044China College of Physics and Center of Quantum Materials and Devices Chongqing UniversityChongqing 401331China Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission College of Resources and Environmental ScienceSouth-Central Minzu UniversityWuhan 430074China

Deeply photocatalytic oxidation of NO-to-NO_(3)holds great promise for alleviating NO_(x) *** major challenge of NO photo-oxidation is the highly in-situ generated NO_(2) concentration,and the formation of unstable nitrate species causes desorption to release NO_(2).In this study,SnO_(2) quantum dots and oxygen vacancies co-modified Zn_(2)SnO_(4)(ZSO-SnO_(2)-OVs)were prepared by a one-step hydrothermal procedure,the NO photo-oxidation was investigated by a combination of solid experimental and theoretical ***,spectroscopic measurements indicate that fast carrier dynamics can be achieved due to the electron transfer efficiency of ZSO-SnO_(2)-OVs reaching 99.99%,far outperforming the counterpart and previously reported *** NO oxidation,molecular NO/O_(2) and H2O are efficiently adsorbed/activated around OVs and SnO_(2) QDs,***-situ infrared measurements and calculated electron localized function disclose two main findings:(1)richly electrons enable NO promptly form NOinstead of toxic NO_(2) or NO^(+);(2)the generation of stable and undecomposed bidentate NO_(3)rather than bridging or monodentate one benefits the deep oxidation of NO via shifting reaction sites from O terminals for original ZSO to Sn ones for ZSO-SnO_(2)-*** synergistic action of SnO_(2) QDs and OVs positively contributes to the NO oxidation performance enhancement(60.6%,0.1 g of sample)and high selectivity of NO to NO_(3)(99.2%).Results from this study advance the mechanistic understanding of NO photooxidation and its selectivity to NO_(3)over photocatalysts.

关键词： Zn_(2)SnO_(4) Modification NO photo-oxidation Charge transfer efficiency Reaction mechanism

MoS_(2)/Co_(9)S_(8)/MoC heterostructure connected by carbon nanotubes as electrocatalyst for efficient hydrogen evolution reaction

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Journal of Materials Science & Technology 2021年第20期79卷 29-34页

作者： Meng Wang Kailiang Jian Zepeng lv Dong li Gangqiang fan Run Zhang Jie Dang College of Materials Science and Engineering Chongqing UniversityChongqing400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing400044China

High-performance multifunctional materials for water splitting driven by low voltage are crucial for hydrogen evolution reaction(HER),but developing such materials is ***,a simple strategy was designed to build a MoS_(2)/Co_(9)S_(8)/MoC@CNT-N(MCM@CNT-N)heterostructure with a large number of *** the HER,the synthesized MCM@CNT-N heterostructure catalyst showed high efficiency and stable electrocatalytic performance,with a low overpotential of 174.2 mV and a small Tafel slope of 84.7 mV dec^(-1) at a current density of 10 mA cm^(-2) in 0.5 M H_(2)SO_(4).In addition to the function of heterojunctions,the excellent activity is also attributed to the introduction of Co and N atoms and the formation of carbon *** work provides a new approach to build efficient and low-cost electrocatalysts for electrochemical reactions.

关键词： MoS_(2) Heterostructure Hydrogen Electrocatalysis CNT

Effect of high stirring speed on the agglomerate behaviors for cohesive SiO_(2) powders in gas fluidization

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Particuology 2023年第9期80卷 192-201页

作者： fan liu Zhan Du Qingshan Zhu Xiaojun Guo Hebang Shi Pengpeng lv Hongzhong li School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChina Academy of SciencesBeijing100190China

The effects of superficial gas velocity and mechanical stirring speed on the precise regulation of flow regimes for cohesive SiO2 powders(mean diameter is 16μm)were experimentally investigated in a stirring-assisted fluidized *** results showed that compared with the agglomerates formed in the non-assisted fluidization of cohesive SiO2 powders,the introduction of mechanical stirring could effectively reduce the size of agglomerates and well disperse the agglomerates during *** best regulation range of agglomerate particulate fluidization can be achieved at 600 rpm when agglomerate sizes were reduced to below 200μ*** investigation based on the operational phase diagram revealed that transformations of flow regimes were dominated by both stirring speed and gas *** stirring applied enlarges the operational range of agglomerate particulate fluidization(APF)with a delayed onset of bubbling for cohesive ***,the exorbitant speed increases the collision velocity and contact area between small agglomerates,which results in the formation of unstable agglomerates and the whirlpool of powder.

关键词： Cohesive powders Stirring-assisted fluidized bed Agglomerate size Agglomerate particulate fluidization

Operative timing of liver transplantation for patients with severe hepatitis

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Hepatobiliary & Pancreatic Diseases International 2009年第5期8卷 479-482页

作者： cai, Qiu-Cheng Jiang, Yi lv, li-Zhi Hu, Huan-Zhang Zhang, Xiao-Jin Chen, Yong-Biao Chen, Shao-Hua Zhang, Kun Yang, fang Wei, Wei-Ming Pan, fan Zhang, Shao-Geng lin, Hua Fuzhou Gen Hosp Inst Hepatobiliary Surg Fuzhou 350025 Peoples R China

BACKGROUND: Fulminant hepatic failure manifests a rapid onset, serious complications, and a high mortality, but still there is a possibility of recovery. Once the patient is able to pass a crisis, the liver is able to regenerate completely and regain its normal function. Therefore it is of vital importance to determine the eligible timing for transplantation. Premature surgery might result in a loss of the chance of internal medical treatment and misuse of liver resources, whereas delayed surgery might increase the difficulty of treatment in the preoperative period and the possibility of complications and medical expense, which eventually result in decreased rate of success and survival. This problem remains worldwide how to choose the optional timing of operation. METHODS: Thirty-six patients with severe hepatitis were treated by orthotopic liver transplantation. The distribution of MELD scores in these patients was: 10-19 in 8 patients, 20-29 in 10, 30-39 in 11, and 40 in 7. They were divided into two groups: MELD score = 30. Parameters (1-year survival rate, complications, preoperative use of artificial liver, operative time, volume of bleeding and blood transfusion, and average hospital costs) were examined as prognostic factors after liver transplantation. RESULTS: The I-year survival rate of the MELD score = 30 group (77.8% and 33.3%, P=0.007), and the rate of complications in the liver treatment, operative time, operative hemorrhage, and transfusion between the two groups (P=0.742). But the average daily hospital cost in the MELD score >= 30 group was higher (P=0.008). CONCLUSION: This study shows that when the MELD score is liver transplantation for patients with severe hepatitis.

关键词： liver transplantation severe hepatitis operative time

MXenes as noble-metal-alternative co-catalysts in photocatalysis

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Chinese Journal of Catalysis 2021年第1期42卷 3-14页

作者： Kaining li Sushu Zhang Yuhan li Jiajie fan Kangle lv Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Enducation College of Resources and Environmental ScienceSouth-Central University for NationalitiesWuhan 430074HubeiChina Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing 400067China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina

Photocatalysis has become a focal point in research as a clean and sustainable technology with the potential to solve environmental problems and energy *** loading of noble-metal co-catalysts can substantially improve the photocatalytic efficiency of *** the high cost and scarcity of noble metals markedly limit their large-scale applications,finding a noble-metal-alternative co-catalyst is ***,a novel 2D transition metal material,has attracted considerable attention as a promising substitute for noble metal co-catalysts owing to its cost-efficiency,unique 2D layered structure,and excellent electrical,optical,and thermodynamic *** review focuses on the latest advancements in research on MXenes as co-catalysts in relatively popular photocatalytic applications(hydrogen production,CO2 reduction,nitrogen fixation,and organic pollutant oxidation).The synthesis methods and photocatalytic mechanisms of MXenes as co-catalysts are also summarized according to the type of MXene-based ***,the crucial opportunities and challenges in the prospective development of MXene-based photocatalysts are *** emphasize that modern techniques should be used to demonstrate the effects of MXenes on photocatalysis and that the photocatalytic activity of MXene-based photocatalysts can be further improved using defective engineering and recent phenomena such as the localized surface plasmon resonance effect and single-atom catalysis.

关键词： MXenes Photocatalytic degradation Hydrogen production CO2 reduction Nitrogen fixation

鲁西南区域性高温干旱复合事件特征及危险性分析

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中国农业气象 2024年第6期45卷 657-668页

作者：李瑞英吕桂恒郝晓雷樊杰江晓东山东省气象防灾减灾重点实验室济南250031 山东省菏泽市气象局菏泽274000 江苏省农业气象重点实验室/南京信息工程大学应用气象学院南京210044

基于山东西南部28个气象观测站1991-2022年3-10月逐日气温和降水量数据,根据区域性高温过程等级划分标准和区域性干旱过程监测评估方法,识别区域性高温、干旱及高温干旱复合事件,并开展相应的发生特征和致灾危险性分析。结果表明:(1)山... 详细信息

基于山东西南部28个气象观测站1991-2022年3-10月逐日气温和降水量数据,根据区域性高温过程等级划分标准和区域性干旱过程监测评估方法,识别区域性高温、干旱及高温干旱复合事件,并开展相应的发生特征和致灾危险性分析。结果表明:(1)山东西南部区域性高温事件发生频次显著增多,开始日期显著提前,高温强度呈微弱增强变化;区域性干旱事件具有连发特征,发生频次增加,干旱强度趋于减弱;高温干旱复合事件集中发生于6-7月,发生频次增加,开始日期有所提前。(2)高温致灾危险性分布区域与高温强度分布区域基本一致,自西向东递减,高危险性区域主要分布在西部;干旱致灾危险性分布区域与干旱强度分布区域基本一致,自南向北递减,高危险性区域主要分布在南部;高温干旱复合致灾危险性分布区域与高温危险性区域分布规律较为相似,危险性自西向东递减。(3)随着气候变暖,山东西南部未来发生高温、干旱和高温干旱复合事件的风险加大。

关键词：高温干旱复合特征信息扩散理论危险性

Community characteristics of macrobenthos in the Huanghe(Yellow River) Estuary during water and sediment discharge regulation

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Acta Oceanologica Sinica 2016年第8期35卷 74-81页

作者： REN Zhonghua li fan WEI Jiali li Shaowen lv Zhenbo GAO Yanjie CONG Xuri Shandong Provincial Key Laboratory of Restoration for Marine Ecology Shandong Marine Resource and Environment Research Institute Institute of Marine Science Shanghai Ocean University Institute of Fisheries and life Science Shanghai Ocean University

The community characteristics of macrobenthos in the Huanghe（Yellow River） Estuary is influenced by a combination of natural and anthropogenic factors. Here, we investigated short-term changes（1-month） in macrobenthic community structure in response to water and sediment discharge regulation（WSDR） in ***, we sampled the macrobenthos at 18 sampling stations situated at four distances（5, 10, 20, and 40 km）from the mouth of the Huanghe Estuary before（mid-June）, during（early-July）, and after（mid-July） WSDR. The results showed that a total of 73, 72, and 85 species were collected before, during, and after WSDR, ***, 13, 1, and 16 dominant species were detected at this three periods. Four phyla were primarily detected at all three periods（Annelida, Mollusca, Arthropoda, and Echinodermata）. However, while Mollusca and Annelida were the most important phyla in our study, Echinodermata and Annelida were the most important phyla in 1982,demonstrating major changes to community structure over a 3-decadal period. All stations were of high quality BOPA index before WSDR, whereas two and three stations were of reduced quality BOPA index during and after WSDR, respectively. The results of ABC curves showed that had incurred disturbed conditions after human activities WSDR. Most important of all, multivariate analyses and RDA analysis indicated that the structure of the macrobenthic community was closely linked to environment factors, including that organic content factor caused the distribution of macrobenthic community mostly during WSDR, while water depth after WSDR affected the macro benthos community structure seriously, and during WSDR, the environment factor influencing it was not single, including organic content, sulfide content, Hg and As. These differences may have been due to changes in water transparency negatively impacting the growth and development of macrobenthos, due to specific lifehistory requirements. Our results demonstrate that ant

关键词： macrobenthos Huanghe(Yellow River) Estuary ecology community structure environment factors

Evidence for particle acceleration approaching PeV energies in the W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： Cao, Zhen Aharonian, F. Axikegu Bai, Y.X. Bao, Y.W. Bastieri, D. Bi, X.J. Bi, Y.J. Bian, W. Bukevich, A.V. Cao, Q. Cao, W.Y. Cao, Zhe Chang, J. Chang, J.F. Chen, A.M. Chen, E.S. Chen, H.X. Chen, liang Chen, lin Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S. Chen, S.H. Chen, S.Z. Chen, T.L. Chen, Y. Cheng, N. Cheng, Y.D. Cui, M.Y. Cui, S.W. Cui, X.H. Cui, Y.D. Dai, B.Z. Dai, H.L. Dai, Z.G. Danzengluobu Dong, X.Q. Duan, K.K. fan, J.H. fan, Y.Z. fang, J. fang, J.H. fang, K. Feng, C.F. Feng, H. Feng, L. Feng, S.H. Feng, X.T. Feng, Y. Feng, Y.L. Gabici, S. Gao, B. Gao, C.D. Gao, Q. Gao, W. Gao, W.K. Ge, M.M. Geng, L.S. Giacinti, G. Gong, G.H. Gou, Q.B. Gu, M.H. Guo, F.L. Guo, X.L. Guo, Y.Q. Guo, Y.Y. Han, Y.A. Hasan, M. He, H.H. He, H.N. He, J.Y. He, Y. Hor, Y.K. Hou, B.W. Hou, C. Hou, X. Hu, H.B. Hu, Q. Hu, S.C. Huang, D.H. Huang, T.Q. Huang, W.J. Huang, X.T. Huang, X.Y. Huang, Y. Ji, X.L. Jia, H.Y. Jia, K. Jiang, K. Jiang, X.W. Jiang, Z.J. Jin, M. Kang, M.M. Karpikov, I. Kuleshov, D. Kurinov, K. li, B.B. li, C.M. li, Cheng li, Cong li, D. li, F. li, H.B. li, H.C. li, Jian li, Jie li, K. li, S.D. li, W.L. li, X.R. li, Xin li, Y.Z. li, Zhe li, Zhuo liang, E.W. liang, Y.F. lin, S.J. liu, B. liu, C. liu, D. liu, D.B. liu, H. liu, H.D. liu, J. liu, J.L. liu, M.Y. liu, R.Y. liu, S.M. liu, W. liu, Y. liu, Y.N. Luo, Q. Luo, Y. lv, H.K. Ma, B.Q. Ma, L.L. Ma, X.H. Mao, J.R. Min, Z. Mitthumsiri, W. Mu, H.J. Nan, Y.C. Neronov, A. Ou, L.J. Pattarakijwanich, P. Pei, Z.Y. Qi, J.C. Qi, M.Y. Qiao, B.Q. Qin, J.J. Raza, A. Ruffolo, D. Sáiz, A. Saeed, M. Semikoz, D. Shao, L. Shchegolev, O. Sheng, X.D. Shu, F.W. Song, H.C. Stenkin, Yu.V. Stepanov, V. Su, Y. Sun, D.X. Sun, Q.N. Sun, X.N. Sun, Z.B. Takata, J. Tam, P.H.T. Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University of Chinese Academy of Sciences Beijing 100049 China TIANFU Cosmic Ray Research Center Chengdu China Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland Max-Planck-Institut for Nuclear Physics P.O. Box 103980 Heidelberg 69029 Germany School of Physical Science and Technology & School of Information Science and Technology Southwest Jiaotong University Chengdu 610031 China School of Astronomy and Space Science Nanjing University Nanjing 210023 China Center for Astrophysics Guangzhou University Guangzhou 510006 China Tsung-Dao Lee Institute & School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Institute for Nuclear Research of Russian Academy of Sciences Moscow 117312 Russia Hebei Normal University Shijiazhuang 050024 China University of Science and Technology of China Hefei 230026 China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy & Key Laboratory of Radio Astronomy Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210023 China Research Center for Astronomical Computing Zhejiang Laboratory Hangzhou 311121 China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China School of Physics and Astronomy Yunnan University Kunming 650091 China Key Laboratory of Cosmic Rays (Tibet University) Ministry of Education Lhasa 850000 China National Astronomical Observatories Chinese Academy of Sciences Beijing 100101 China School of Physics and Astronomy (Zhuhai) & School of Physics (Guangzhou) & Sino-French Institute of Nuclear Engineering and Technology (Zhuhai) Sun Yat-sen University Zhuhai 519000 & Guangzhou 510275 Guangdong China Institute of Frontier and

The γ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays (CRs) accelerated by the shock of supernova remnant (SNR) W51C and the dense molecular clouds in the adjacent star-forming region, W51B. However, the maximum acceleration capability of W51C for CRs remains elusive. Based on observations conducted with the Large High Altitude Air Shower Observatory (LHAASO), we report a significant detection of γ rays emanating from the W51 complex, with energies from 2 to 200 TeV. The LHAASO measurements, for the first time, extend the γ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of TeV. By combining the "π0-decay bump" featured data from Fermi-LAT, the broadband γ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision model. The observed spectral bending feature suggests an exponential cutoff at ∼400 TeV or a power-law break at ∼200 TeV in the CR proton spectrum, most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV regime. Additionally, two young star clusters within W51B could also be theoretically viable to produce the most energetic γ rays observed by LHAASO. Our findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs. © 2024 Science China Press

关键词： Cosmic rays