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Receptor-like Kinases in Root Development:Current Progress and Future Directions

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Molecular Plant 2021年第1期14卷 166-185页

作者： yang ou Hong Kui Jia Li Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou UniversityLanzhou 730000China

Cell-to-cell and cell-to-environment communications are critical to the growth and development of *** surface-localized receptor-like kinases(RLKs)are mainly involved in sensing various extracellular signals to initiate their corresponding cellular *** important vegetative organs for higher plants to adapt to a terrestrial living situation,roots play a critical role for the survival of *** has been demonstrated that RLKs control many biological processes during root growth and *** this review,we summarize several key regulatory processes during Arabidopsis root developm ent in which RLKs play critical *** also put forward a number of relevant questions that are required to be explored in future studies.

关键词： receptor-like kinase root development Arabidopsis

Electrochemically promoted N-heterocyclic carbene polymercatalyzed cycloaddition of aldehyde with isocyanide acetate

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Science China Chemistry 2022年第10期65卷 1873-1878页

作者： Chu-Hong ou Ying-ming Pan Hai-Tao Tang State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences of Guangxi Normal UniversityGuilin 541004China

N-heterocyclic carbene(NHC) is a potent organic small-molecule ***,its high synthetic price and frequent use in combination with excess oxidants have limited its utilization in industrial *** designed and synthesized a porous organic polymer with NHC as the core structure to solve the above *** catalytic performance of the polymer was tested in this *** polymer can successfully catalyze the cycloaddition reaction of aldehyde and ethyl isocyanoacetate under *** results showed that the polymer catalyst can be recycled and had higher catalytic activity than homogeneous *** developed catalytic system(organic electrochemistry and NHC polymer) solves the existing problems of NHC catalysis and provides a reference for the development of new green catalytic systems.

关键词： NHC catalysis electrochemistry heterogeneous catalysis cycloaddition

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The Impact of Relative Humidity and Atmospheric Pressure on Mortality in Guangzhou, China

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Biomedical and Environmental Sciences 2014年第12期27卷 917-925页

作者： ou Chun Quan yang Jun ou Qiao Qun LIU Hua Zhang LIN Guo Zhen CHEN Ping Yan QIAN Jun GUO Yu ming State Key Laboratory of Organ Failure Research Department of Biostatistics School of Public Health and Tropical Medicine Southern Medical University National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Guangzhou First People's Hospital Guangzhou Medical University Guangzhou Center for Disease Control and Prevention Department of Mathematics and Physics School of Biomedical Engineering Southern Medical University Department of Epidemiology and Biostatistics School of Population Health The University of Queensland

Objective Although many studies have examined the effects of ambient temperatures on mortality, little evidence is on health impacts of atmospheric pressure and relative humidity. This study aimed to assess the impacts of atmospheric pressure and relative humidity on mortality in Guangzhou, China. Methods This study included 213,737 registered deaths during 2003-2011 in Guangzhou, China. A quasi-Poisson regression with a distributed lag non-linear model was used to assess the effects of atmospheric pressure/relative humidity. Results We found significant effect of low atmospheric pressure/relative humidity on mortality. There was a 1.79% （95% confidence interval： 0.38%-3.22%） increase in non-accidental mortality and a 2.27% （0.07%-4.51%） increase in cardiovascular mortality comparing the 5th and 25th percentile of atmospheric pressure. A 3.97% （0.67%-7.39%） increase in cardiovascular mortality was also observed comparing the 5th and 25th percentile of relative humidity. Women were more vulnerable to decrease in atmospheric pressure and relative humidity than men. Age and education attainment were also potential effect modifiers. Furthermore, low atmospheric pressure and relative humidity increased temperature-related mortality. Conclusion Both low atmospheric pressure and relative humidity are important risk factors of mortality. our findings would be helpful to develop health risk assessment and climate policy interventions that would better protect vulnerable subgroups of the population.

关键词： Relative humidity Atmospheric pressure Temperature Mortality

Navigation jamming signal recognition based on long short-term memory neural networks

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Journal of Systems Engineering and Electronics 2022年第4期33卷 835-844页

作者： FU Dong LI Xiangjun Mou Weihua MA ming ou Gang College of Electronic Science and Technology National University of Defense TechnologyChangsha 410005China

This paper introduces the time-frequency analyzed long short-term memory(TF-LSTM) neural network method for jamming signal recognition over the Global Navigation Satellite System(GNSS) receiver. The method introduces the long shortterm memory(LSTM) neural network into the recognition algorithm and combines the time-frequency(TF) analysis for signal preprocessing. Five kinds of navigation jamming signals including white Gaussian noise(WGN), pulse jamming, sweep jamming, audio jamming, and spread spectrum jamming are used as input for training and recognition. Since the signal parameters and quantity are unknown in the actual scenario, this work builds a data set containing multiple kinds and parameters jamming to train the TF-LSTM. The performance of this method is evaluated by simulations and experiments. The method has higher recognition accuracy and better robustness than the existing methods, such as LSTM and the convolutional neural network(CNN).

关键词： satellite navigation jamming recognition time-frequency(TF)analysis long short-term memory(LSTM)

APPLYING PROCESS MINING APPROACH TO SUPPORT THE VERIFICATION OF A MULTI-AGENT SYSTEM

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Journal of Systems Science and Systems Engineering 2010年第2期19卷 131-149页

作者： C.ou-yang Yeh-Chun JUAN Depart.of Industrial Management National Taiwan University of Science and Technology Depart.of Industrial Engineering and Management Ming Chi University of Technology

Using agent development tools to construct an agent-based system is a well applied approach. However, the development tools usually do not have the function to check the feasibility about the workflow of the agent system during it implementation stage. Therefore, to develop an evaluation approach to analyze the feasibility of a developing agent system such that the improper workflow of an agent system can be found in the early design stage is a necessary task to reduce the risk of implementation. In this research, a Petri Net （PN） based three-stage evaluation approach was developed. In the conceptual stage, the pitfall of the current agent system developing process was examined and an improvement analysis process was specified. Then, in the system design stage, an evaluation approach which extracted the process log file from a developing agent system into a PN model in terms of a process mining approach-or algorithm was proposed. This model was simulated in a PN simulation package. The agent system performance was evaluated in terms of analyzing the deadlock phenomena of the PN model. Finally, in the implementation stage, the proposed concept was implemented by using an agent developing tool JADE and a PN simulation tool CPN. An agent-based robotic assembly system was used to examine the possible deadlock of the agent system.

关键词： Agent-based systems workflow feasibility process mining Petri Nets

Stabilization Parametric Region of Distributed PID Controllers for General First-Order Multi-Agent Systems With Time Delay

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IEEE/CAA Journal of Automatica Sinica 2020年第6期7卷 1555-1564页

作者： Xinyi Yu Fan yang Chao Zou Linlin ou Department of Automation Zhejiang University of TechnologyHangzhou 310023China

The stabilization problem of distributed proportional-integral-derivative(PID)controllers for general first-order multi-agent systems with time delay is investigated in the *** closed-loop multi-input multi-output(MIMO)framework in frequency domain is firstly introduced for the multi-agent *** on the matrix theory,the whole system is decoupled into several subsystems with respect to the eigenvalues of the Laplacian *** that the eigenvalues may be complex numbers,the consensus problem of the multi-agent system is transformed into the stabilizing problem of all the subsystems with complex *** each subsystem with complex coefficients,the range of admissible proportional gains is analytically ***,the stabilizing region in the space of integral gain and derivative gain for a given proportional gain value is also obtained in an analytical *** entire stabilizing set can be determined by sweeping proportional gain in the allowable *** proposed method is conducted for general first-order multi-agent systems under arbitrary topology including undirected and directed graph ***,the results in the paper provide the basis for the design of distributed PID controllers satisfying different performance *** simulation examples are presented to check the validity of the proposed control strategy.

关键词： Consensus frequency domain multi-agent systems stability time delay

Facile Preparation of NiO@graphene Nanocomposite with Superior Performances as Anode for Li-ion Batteries

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Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 212-222页

作者： Junke ou Shugen Wu Lin yang Hao Wang Institute for Advanced Study Chengdu UniversityChengdu 610106China Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science and EngineeringZigong 643000China Zhanglan Honors College Chengdu UniversityChengdu 610106China School of Medicine Chengdu UniversityChengdu 610106China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

Transition metal oxides gain considerable research attentions as potential anode materials for lithium ion batteries,but their applications are hindered due to their poor electronic conductivity,weak cycle stability and drastic volume ***,a NiO@graphene composite with a unique 3D conductive network structure is prepared through a simple *** applied as anode material for Li-ion batteries,at 50 mA g^(−1),the NiO@graphene displays a high reversible capacity of 1366 mAh g^(−1) and a stable cyclability of 205 mAh g^(−1) after 500 *** at a high rate of 10 A g^(−1),it displays a favorable reversible capacity of 711 mAh g^(−1).Remarkably,when it recovers back to 0.05 A g^(−1),a reversible capacity of 1741 mAh g^(−1) is ***,the NiO@graphene composite with 3D structure shows good application prospects as an alternative anode for advanced lithium ion batteries.

关键词： Lithium ion batteries 3D conductive network structure NiO@graphene composite Alternative

Preparation and properties of bifunctional Gd_(2)O_(3)/GQD composite nanoparticles

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Journal of Rare Earths 2022年第7期40卷 1118-1125页

作者： Chengjie Xu Meigui ou Hao Zhou Chunlin yang College of Materials and Metallurgy University of GuizhouGuiyang 550025China National Local Co-construction Engineering Laboratory for High Performance Metal Structure Material and Manufacture Technology Guiyang 550025China College of Chemistry and Materials Engineering Guiyang UniversityGuiyang 550003China

Nanocomposites of graphene quantum dots(GQDs)modified gadolinium oxide(Gd_(2)O_(3))particles were successfully *** addition,the effects of the amount of GQDs and the particle size of Gd_(2)O_(3)on the properties of nanocomposites were *** structures and properties of nanoparticles were characterized by X-ray diffraction,X-ray photoelectron spectroscopy,Fourier transform infrared spectroscopy,field emission scanning electron microscopy,transmission electron microscopy,photoluminescence spectrometry,and magnetic resonance *** results show that the synthesized particles Gd_(2)O_(3)/GQD are spherical with a diameter of approximately 40 nm and have excellent fluorescence and magnetic property,and its relaxation rate(r_(1)=25.18(mmol/L)^(-1)/s)is higher than that of the typical commercial contrast agents Gd-DTPA(r_(1)=4.5(mmol/L)^(-1)/s),The fluorescence property of Gd_(2)O_(3)/GQD is optimized by varying the V_(GQDs):V_(Gd2O3)ratio,and 1:1 ratio of V_(GQDs):V_(Gd2O3)results in the best fluorescence *** large particles of Gd_(2)O_(3)improve the relaxation property of ***,the nanocomposites Gd_(2)O_(3)/GQD with magnetic and fluorescence characteristics can be used in biological imaging,drug targeting,and in-vivo diagnostic analysis.

关键词： Gd_(2)O_(3)/GQD Magnetic Fluorescence Magnetic resonance imaging(MRI) Rare earths

Dynamical-Symmetry Breaking, Mechanism and Characterization Behaviour

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Chinese Physics Letters 2001年第5期18卷 625-627页

作者： XU Gong-ou XU ming-Jie XING Yong-Zhong yang Ya-Tian Department of Physics Nanjing UniversityNanjing 210093 Department of Geoscience Nanjing UniversityNanjing 210093 Center of Theoretical Nuclear Physics National Laboratory of Heavy-Ion AcceleratorLanzhou 730000 Institute of Theoretical Physics Chinese Academy of SciencesBeijing 10008 Department of Physics Fujian Normal UniversityFuzhou 350007 Department of Physics Tianshui Normal CollegeTianshui 741000

The integrability of quantum systems is charactized by the algebraic notion of dynamical symmetry,hence the nonintegrability of quantum systems should be discussed topologically in reference to corresponding integrable ones.A topological approach is *** topological map in general is shown to be constituted of the piecewise diffeomorphic maps interrupted by sudden nondiffeomorphic maps and thus has the similar typical feature of stretching-folding stretching......as the Smale horse-shoe map.

关键词： topological stretching integrable