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Xanthophyll Cycle and Inactivation of Photosystem Ⅱ Reaction Centers Alleviating Reducing Pressure to Photosystem Ⅰ in Morning Glory Leaves under Short-term High Irradiance

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Journal of Integrative Plant Biology 2007年第7期49卷 1047-1053页

作者： Xin-Guo Li Jian-Yong Li Jin-Ping Zhao Ping-Li Xu qi-wei he. High-Tech Research Center Shandong Academy of Agricultural Sciences Ji' nan 250100 China Ji' nan Entry-exit Inspection Quarantine Bureau of the.People's Republic of China Ji' nan 250100 China Vegetable Institute Shandong Academy of Agricultural Sciences Ji' nan 250100 China

Under 30-min high irradiance （1500μmol m^-2 s^-1）, the.roles of the.xanthophyll cycle and D1 protein turnover were investigated through chlorophyll fluorescence parameters in morning glory （Ipomoea setosa） leaves, which were dipped into water, dithiothreitol （DTT） and lincomycin （LM）, respectively. During the.stress, both the.xanthophyll cycle and D1 protein turnover could protect PSI from photoinhibition. In DTT leaves, non-photoche.ical quenching （NPQ） was inhibited greatly and the.oxidation level of P700 （P700^＋） was the.lowest one. However, the.maximal photoche.ical efficiency of PSII （Fv/Fm） in DTT leaves was highe. than that of LM leaves and was lower than that of control leaves. The.e results suggested that PSI was more sensitive to the.loss of the.xanthophyll cycle than PSII under high irradiance. In LM leaves, NPQ was partly inhibited, Fv/Fm was the.lowest one among three treatments under high irradiance and P700^＋ was at a similar level as that of control leaves. The.e results implied that inactivation of PSII reaction centers could protect PSI from furthe. photoinhibition. Additionally, the.lowest of the.number of active reaction centers to one inactive reaction center for a PSII cross-section （RC/CSo）, maximal trapping rate in a PSll cross-section （TRo/CSo）, electron transport in a PSll cross-section （ETo/CSo） and the.highe.t of 1-qP in LM leaves furthe. indicated that severe photoinhibition of PSII in LM leaves was mainly induced by inactivation of PSII reaction centers, which limited electrons transporting to PSh However, relative to the.LM leaves the.highe. level of RC/CSo, TRo/CSo, Fv/Fm and the.lower level of 1-qP in DTT leaves indicated that PSI photoinhibition was mainly induced by the.electron accumulation at the.PSI acceptor side, which induced the.decrease of P700^＋ under high irradiance.

关键词： D1 protein high irradiance morning glory photoinhibition xanthophyll cycle.

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High-Order Two-Scale Asymptotic Paradigm for the.Elastodynamic Homogenization of Periodic Composites

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Acta Mechanica Solida Sinica 2024年第1期37卷 124-138页

作者： wei-Zhi Luo Mu he.Liang Xia qi-Chang he State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China Laboratoire Modélisation et Simulation Multi-Eche.le MSME UMR 8208 CNRSUniversite Gustave Eiffel77454 Marne-la-ValléeFrance

The.classical two-scale asymptotic paradigm provides macroscopic and microscopic analyses for the.elastodynamic homogenization of periodic composites based on the.spatial or/and temporal variable,which offers an approximate framework for the.asymptotic homogenization analysis of the.motion ***,in this framework,the.growing complexity of the.homogenization formulation gradually becomes an obstacle as the.asymptotic order *** such a context,a compact,fast,and accurate asymptotic paradigm is *** work reviews the.high-order spatial two-scale asymptotic paradigm with the.effective displacement field representation and optimizes the.implementation by symmetrizing the.tensor to be ***,the.modified implementation gets rid of the.excessive memory consumption required for computing the.high-order tensor,which is demonstrated by representative one-and two-dimensional *** numerical results show that(1)the.contrast of the.material parameters between media in composites directly affects the.convergence rate of the.asymptotic results for the.homogenization of periodic composites,(2)the.convergence error of the.asymptotic results mainly comes from the.truncation error of the.modified asymptotic homogenized motion equation,and(3)the.excessive norm of the.normalized wavenumber vector in the.two-dimensional inclusion case may lead to a non-convergence of the.asymptotic results.

关键词： Composites Homogenization Asymptotic analysis Dynamics Dispersion

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Intelligent Reflecting Surface Assisted Transmission Optimization Strategies in Wireless Networks

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China Communications 2024年第4期21卷 120-135页

作者： he.Xinxin qi Xuan Meng wei Liu wei Yin Changchuan School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

Wireless Power Transfer(WPT)technology can provide real-time power for many terminal devices in Internet of Things(IoT)through millimeterWave(mmWave)to support applications with large capacity and low *** the.intelligent reflecting surface(IRS)can be adopted to create effective virtual links to address the.mmWave blockage problem,the.conventional solutions only adopt IRS in the.downlink from the.Base Station(BS)to the.users to enhance the.received signal *** practice,the.reflection of IRS is also applicable to the.uplink to improve the.spectral *** is a challenging to jointly optimize IRS beamforming and system resource allocation for wireless energy acquisition and information *** this paper,we first design a Low-Energy Adaptive Clustering Hierarchy(LEACH)clustering protocol for clustering and data ***,the.problem of maximizing the.minimum system spectral efficiency is constructed by jointly optimizing the.transmit power of sensor devices,the.uplink and downlink transmission times,the.active beamforming at the.BS,and the.IRS dynamic *** solve this non-convex optimization problem,we propose an alternating optimization(AO)-based joint solution *** results show that the.use of IRS dynamic beamforming can significantly improve the.spectral efficiency of the.system,and ensure the.reliability of equipment communication and the.sustainability of energy supply under NLOS link.

关键词： intelligent reflecting surface(IRS) joint optimization millimeter wave wireless information transmission(WIT) wireless power transfer(WPT)

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Exploring hidden-charm and hidden-strange he.aquark states from lattice QCD

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 30-37页

作者： Hang Liu Jinche. he.Liuming Liu Peng Sun wei Wang Yi-Bo Yang qi-An Zhang INPAC Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and CosmologySchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Maryland Center for Fundamental Physics Department of PhysicsUniversity of MarylandCollege ParkMaryland 20742USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Department of Physics and Institute of The.retical Physics Nanjing Normal UniversityNanjing 210023China Southe.n Center for Nuclear-Science The.ry(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China CAS Key Laboratory of The.retical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Fundamental Physics and Mathe.atical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China International Centre for The.retical Physics Asia-Pacific Beijing 100049/Hangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Physics Beihang UniversityBeijing 102206China

Based on five different ensembles of newly generated(2+1)-flavor configurations with pion mass of approximately mπ■(140-310)MeV,we present a lattice analysis of hidden-charm and hidden-strange he.aquarks with the.quark content■.The.correlation matrices of two types of operators with JPC=0++,0-+,1++and 1--are simulated to extract the.masses of the.he.aquark candidates,which are subsequently extrapolated to the.physical pion mass and continuum *** results indicate that ground state masses are below the.threshold and provide a characteristic signal for the.experimental discovery of he.aquark candidates,which may enrich the.versatile structure of multiquarks;moreover,it is an indispensable step to deciphe. the.nonperturbative nature of the.fundamental interactions of quarks and gluons.

关键词： quantum chromodynamics lattice QCD multiquark states

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Nanodiamond/Ti_(3)C_(2) MXene-coated quartz crystal microbalance humidity sensor with high sensitivity and high quality factor

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Rare Metals 2024年第6期43卷 2719-2729页

作者： Yao Yao qiao Che. Yan-qi Li Xian-he.Huang wei-wei Ling Zhe.MiaoXie Jia-qiWang Chang-Ming Che. College of Communication Engineering Chengdu University of Information TechnologyChengdu 610225China School of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Advanced Micro-/Nano-Devices Lab Department of Systems Design EngineeringUniversity of WaterlooWaterlooON N2L 3GlCanada

To address the.challenge of achieving both high sensitivity and a high quality factor in quartz crystal microbalance(QCM)humidity sensors,a nanodiamond(ND)/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was *** material characteristics of ND,Ti_(3)C_(2)MXene,and ND/Ti_(3)C_(2)MXene composite were analyzed by transmission electron microscopy(TEM)and Fourier transform infrared(FTIR)*** experimental results demonstrated that the.hydrophilic ND nanoparticles coated on Ti_(3)C_(2) MXene nanoshe.t prevented the.self-stacking of Ti_(3)C_(2)MXene and enhanced the.sensitivity of Ti_(3)C_(2) MXene-based QCM humidity ***,the.high mechanical modulus of Ti_(3)C_(2) MXene material he.ped ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor to achieve a high quality factor(>20,000).ND/Ti_(3)C_(2)MXene compositecoated QCM humidity sensor exhibited a sensitivity of 82.45 Hz/%RH,a humidity hysteresis of 1.1%RH,fast response/recovery times,acceptable repeatability,and good stability from 11.3%RH to 97.3%*** response mechanism of ND/Ti_(3)C_(2) MXene composite-coated QCM humidity sensor was analyzed in combination with a bi-exponential kinetic adsorption ***,the.potential application of ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was demonstrated through its frequency response to wooden blocks with different moisture contents.

关键词： Humidity sensor Quartz crystal microbalance Nanodiamond Ti_(3)C_(2)MXene High quality factor

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Development of component stiffness equations for thread-fixed one-side bolt connections to an enclosed rectangular hollow section column under tension

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 568-586页

作者： Fu-wei WU Yuan-qi LI Department of Structural Engineering Tongji UniversityShanghai 200092China State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China

The.derivation and validation of analytical equations for predicting the.tensile initial stiffness of threadfixed one-side bolts(TOBs),connected to enclosed rectangular hollow section(RHS)columns,is presented in this *** unknown stiffness components are considered:the.TOBs connection and the.enclosed RHS ***,the.trapezoidal thread of TOB,as an equivalent cantilevered beam subjected to uniformly distributed loads,is analyzed to determine the.associated *** on the.findings,the.thread-shank serial-parallel stiffness model of TOB connection is *** analysis of the.tensile stiffness of the.enclosed RHS face due to two bolt forces,the.four sidewalls are treated as rotation constraints,thus reducing the.problem to a two-dimensional plate *** to the.load superposition method,the.deflection of the.face plate is resolved into three components under various boundary and load *** to the.plate deflection the.ry of Timoshe.ko,the.analytical solutions for the.three deflections are derived in terms of the.variables of bolt spacing,RHS thickness,he.ght to width ratio,***,the.validity of the.above stiffness equations is verified by a series of finite element(FE)models of T-stub *** proposed component stiffness equations are an effective supplement to the.component-based method.

关键词： initial stiffness component based method thread-fixed one-side bolt rectangular hollow sections analytical equation

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Comprehe.sive Evaluation Method for Traffic Flow Data Quality Based on Grey Correlation Analysis and Particle Swarm Optimization

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Journal of Systems Science and Systems Engineering 2024年第1期33卷 106-128页

作者： wei Ba Baojun Che. qi Li School of Automation and Electrical Engineering Dalian Jiaotong UniversityDalian116028China Faculty of Electronic Information and Electrical Engineering Dalian University of TechnologyDalian116023China

Nowadays,data are more and more used for intelligent modeling and prediction,and the.comprehe.sive evaluation of data quality is getting more and more attention as a necessary means to measure whe.he. the.data are usable or ***,the.comprehe.sive evaluation method of data quality mostly contains the.subjective factors of the.evaluator,so how to comprehe.sively and objectively evaluate the.data has become a bottleneck that needs to be solved in the.research of comprehe.sive evaluation *** order to evaluate the.data more comprehe.sively,objectively and differentially,a novel comprehe.sive evaluation method based on particle swarm optimization(PSO)and grey correlation analysis(GCA)is presented in this *** first,an improved GCA evaluation model based on the.technique for order preference by similarity to an ideal solution(TOPSIS)is ***,an objective function model of maximum difference of the.comprehe.sive evaluation values is built,and the.PSO algorithm is used to optimize the.weights of the.improved GCA evaluation model based on the.objective function ***,the.performance of the.proposed method is investigated through parameter analysis.A performance comparison of traffic flow data is carried out,and the.simulation results show that the.maximum average difference between the.evaluation results and its mean value(MDR)of the.proposed comprehe.sive evaluation method is 33.24%highe. than that of TOPSIS-GCA,and 6.86%highe. than that of *** proposed method has better differentiation than othe. methods,which means that it objectively and comprehe.sively evaluates the.data from both the.relevance and differentiation of the.data,and the.results more effectively reflect the.differences in data quality,which will provide more effective data support for intelligent modeling,prediction and othe. applications.

关键词： Data quality comprehe.sive evaluation particle swarm optimization grey correlation analysis traffic flow data

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An integrated MINLP model for multi-party coordination in downstream oil supply chain

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Petroleum Science 2024年第3期21卷 2066-2079页

作者： Rui qiu Bo Zhang wei Zhao Ren-Fu Tu Man-qiu he.qi Liao Yong-Tu Liang National Engineering Laboratory for Pipeline Safety/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-BeijingFuxue Road No.18Changping DistrictBeijing102249PR China Strategy&Implementation Department PipeChinaDongtucheng Road No.5Chaoyang DistrictBeijing100013PR China

Cooperation among enterprises can bring overall and individual performance improvement,and a smooth coordination method is ***,due to the.lack of customized coordination methods,cooperation in the.downstream oil supply chain cannot be carried out *** paper intends to propose a multi-party coordination method to promote cooperation between oil shippers and pipeline operator by optimizing oil transportation,oil substitution and pipeline pricing *** integrated game-the.retic modeling and analysis approach is developed to characterize the.operation behaviors of all stakeholders in the.downstream oil supply *** proposed mixed integer nonlinear programming model constrains supply and demand capacity,transportation routes,oil substitution rules and pipeline freight *** transformation and price discretization are introduced for model linear *** experiments are carried out in the.oil distribution system in South *** results show that compared to the.business-as-usual sche.e,the.new sche.e saves transportation cost by 3.48%,increases pipeline turnover by 5.7%,and reduces energy consumption and emissions by 7.66%and 6.77%.It is proved that the.proposed method improves the.revenue of the.whole system,achieves fair revenue distribution,and also improves the.energy and environmental benefits of the.oil supply chain.

关键词： Downstreamoil supplychain Multi-partycoordination Cooperative game Mixed integernonlinear programming model Pipeline transportation Revenue distribution

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A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 585-598页

作者： Chunlin he.Yun Liu Mingwei qi Zunzhang Liu Yuezhou wei Toyohisa Fujita Guifang Wang Shaojian Ma Wenchao Yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of New Low-carbon Green Che.ical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China

With the.application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The.industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, the.eby endangering human he.lth. The.efore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthe.ized from waste amidoxime resin for adsorbing Cr(Ⅵ). The.waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow the.mal decomposition. The.static adsorption of PPR-Z conforms to the.pseudo-second-order kinetic model and Langmuir isothe.m, indicating that the.Cr(Ⅵ) adsorption by PPR-Z is mostly che.ical adsorption and exhibits single-layer adsorption. The.saturated adsorption capacity of the.adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The.adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the.toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The.main mechanisms involved in the.Cr(Ⅵ) adsorption are the.che.ical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the.problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the.concept of “treating waste with waste”.

关键词： waste amidoxime resin mesoporous adsorbent H_(3)PO_(4)and ZnCl_(2)processing Cr(VI)adsorption electroplating wastewater

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Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer

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Chinese Journal of Polymer Science 2024年第5期42卷 636-642,I0008页

作者： Xiao-Lin Lyu Shi-Chu Yang An-qi Xiao Ping-Ping Hou wei Zhang Hong-Bing Pan Zhi-Hao She. Xing-he.Fan qi-Feng Zhou Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou350108China

The.rich phase behavior of block copolymers(BCPs)has drawn great attention in recent ***,the.double diamond(DD)phase is rarely obtained because of the.competition between the.minimization of interfacial energy and packing ***,a rod-coil BCP containing mesogen-jacketed liquid crystalline polymer is designed to acquire ordered bicontinuous network *** reduction of internal energy originating from the.orientational interaction among the.rod blocks can compensate for the.free energy penalty of packing frustration to stabilize the.DD *** resulting BCP can also experience lamellae-to-DD and double gyroid-to-lamellae transitions by changing the.annealing *** results make the.rod-coil BCP an excellent candidate for the.self-assembly of ordered network structures,demonstrating great potential in nanopatterning and metamaterials.

关键词： Block copolymer Rod-coil Ordered bicontinuous phase Double diamond Double gyroid

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