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Journal of Systems Science & Complexity 2023年第6期36卷 2364-2381页

作者： LIN bo LUO Shixian jiang Yan Guangxi Key Laboratory of Disaster Prevention and Engineering Safety Guangxi UniversityNanning530004China School of Electrical Engineering Guangxi UniversityNanning530004China

This paper studies the output consensus problem of heterogeneous linear stochastic multiagent systems with multiplicative noises in system parameters and measurements,where the system noise in each agent is allowed to be *** employing stochastic output regulation theory and the stochastic Lyapunov function approach,a composite controller embedded with stochastic output regulator equations(SOREs)and a stochastic dynamic compensator is designed to achieve the meansquare output consensus of the multi-agent *** implement the consensus algorithm,a sufficient condition for feasible solutions of the SOREs is first established in terms of Lyapunov and Selvester *** the time-varying SOREs are approximated by the Euler-Maruyama method combined with an a-posteriori partial estimation of the increments of the Brownian motion.A numerical example illustrates the theoretical results.

关键词： Heterogeneous multi-agent systems multiplicative noise output consensus stochastic output regulation

Effects of Magnetic Fields on Morphology and Nanostructure Evolution of Incipient Soot Particles from n-heptane/2,5-dimethylfuran Inverse Diffusion Flames

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Journal of Thermal Science 2020年第3期29卷 820-839页

作者： jiang bo WANG Pengfei LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China jiangsu Province Key Laboratory of Aerospace Power System Nanjing 210016China

Differences of the morphology and nanostructure evolution of incipient soot particles generated in n-heptane/2,5-dimethylfuran(DMF)inverse diffusion flames(IDFs)with/without magnetic fields were *** a high resolution transmission electron spectroscopy,the morphology and nanostructures of soot sampled from spatial locations at different heights in IDFs were *** graphitization and the oxidation reactivity of soot were tested by an X-ray diffraction and a thermogravimetric analyzer,*** demonstrated that the magnetic force on paramagnetic species,such as oxygen molecules,can modify the soot formation and *** incipient soot particles with larger diameters appeared in chains or branches or tufted forms on the flame wing region and the higher position than that on the flame centerline region and the lower *** magnetic fields,greater amounts of clustered soot particles displayed more crowded distribution and larger *** particles with typical structures of the core-shell were promoted to own more orderly bordered lamellae with longer fringe length and smaller fringe tortuosity by the magnetic force acting on oxygen at the same sample *** modifications resulted in relatively larger diffraction angle of the peak,higher graphitization degree and slightly lower oxidation reactivity of soot.

关键词： magnetic fields incipient soot particle n-heptane/DMF morphology nanostructure evolution

Eco-friendly aqueous foam stabilized by cellulose microfibers with great salt tolerance and high temperature resistance

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Petroleum Science 2023年第4期20卷 2499-2511页

作者： Li-Li Yang Xian-bo He Yi-Xiu Cheng Guan-Cheng jiang ze-Yu Liu Shi-bo Wang Shi-Xin Qiu Jian-Hua Wang Wei-Guo Tian MOE Key Laboratory of Petroleum Engineering State Key Laboratory of Petroleum Resources and EngineeringChina University of Petroleum(Beijing)Changping DistrictBeijing102249China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering PlasticsInstitute of Chemistry Chinese Academy of Sciences(CAS)Haidian DistrictBeijing100190China MOE Key CNPC Drilling Research Institute Changping DistrictBeijing102206China

A low-cost eco-friendly aqueous foam,especially the robust foam with great tolerance to high salinity and high temperature,is in great demand in the oil industry,e.g.,oil and gas well or geothermal well ***,an ultra-stable aqueous foam was developed using the biodegradable cellulose microfiber(CMF)as a foam *** foam stabilized by CMF shows excellent tolerance to the high concentration of NaCl(6.0 wt%)and CaCl_(2)(0.25 wt%)and the related drainage half-life times(T_(0.5))reach 1750 and 2340 s *** contrast,the foams without CMF are completely drained(T_(0.5)=0 s)when NaCl concentration is greater than 6.0 wt%or CaCl_(2) concentration is greater than 0.20 wt%.Notably,T0.5 of the foams stabilized by CMF at these saline concentrations still can maintain above 1000 s even after aging at 120℃ for 16 h,exhibiting an outstanding foam-stabilizing performance at high *** results suggest that the salt and high-temperature tolerance of CMF in foam stabilization is attributed to the electrically uncharged surfaces,the formation of a gel-like structure and the excellent thermal *** work not only provides a promising candidate of aqueous foam stabilizer to deal with high temperature and high salinity but also presents a natural-based solution for an environmentally friendly drilling industry in the future.

关键词： Aqueous foam Foam stabilizer Cellulose microfiber Salt tolerance Sustainable

Spatial resolution and image processing for pinhole camera-based X-ray fluorescence imaging: a simulation study

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Nuclear Science and Techniques 2022年第5期33卷 135-153页

作者： ze He Ning Huang Peng Wang Zi-Han Chen bo Peng Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China

Spatial resolution and image-processing methods for full-field X-ray fluorescence(FF-XRF)imaging using X-ray pinhole cameras were studied using Geant4simulations with different geometries and algorithms for image *** main objectives were:(1)calculating the quantum efficiency curves of specific cameras,(2)studying the relationships between the spatial resolution and the pinhole diameter,magnification,and camera binning value,and(3)comparing image-processing methods for pinhole camera *** results were obtained using a point and plane source as the X-ray fluorescence emitter and an array of 100×100 silicon pixel detectors as the X-ray *** quantum efficiency of a back-illuminated deep depletion(BI-DD)structure was above 30%for the XRF energies in the 0.8–9 keV range,with the maximum of 93.7%at 4 *** best spatial resolution of the pinhole camera was 24.7μm and 31.3 lp/mm when measured using the profile function of the point source,with the diameter of 20μm,magnification of 3.16,and camera bin of 1.A blind deconvolution algorithm with Gaussian filtering performed better than the Wiener filter and Richardson iterative methods on FF-XRF images,with the signal-to-noise ratio of 7.81 dB and improved signalto-noise ratio of 7.24 dB at the diameter of 120μm,magnification of 1.0,and camera bin of 1.

关键词： Full-field X-ray fluorescence(FF-XRF) X-ray pinhole camera Spatial resolution Image processing

Debye Screening Mass at Next-to-Leading Order and Charmonium Deconfinement in the Quark-Gluon Plasma

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Chinese Physics Letters 1998年第11期15卷 787-789页

作者： CHEN Hong LIU bo HE ze-jun Department of Physics Southwest China Normal UniversityChongqing 400715 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039 Shanghai Institute of Nuclear Research Chinese Academy of SciencesShanghai 201800

Debye screening mass at the next-to-leading order is studied by the resummation method based on perturbation theory at finite *** find that the critical temperature for the J/ψdissociation is 0.211 *** contributions from the next-to-leading order are important,and critical temperature and chemical potential are shifted lower values.

关键词： temperature Debye critical

降雨诱发国道G326顺层滑坡破坏与运动过程研究

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三峡大学学报（自然科学版） 2025年第1期47卷 44-49页

作者：刘仕洪宋琨郭磊曹俊姜波贵州省铜仁公路管理局贵州铜仁554200 三峡大学防灾减灾湖北省重点实验室湖北宜昌443002 贵州省交通规划勘察设计研究院股份有限公司贵阳550081

贵州省国道G326松桃县甘龙镇石板村田堡组顺层滑坡是2020年强降雨诱发的滑坡灾害.在对滑坡变形破坏特征调查的基础上,分析了强降雨诱发滑坡滑动破坏的成因.采用物质点法(materialpointmethod,MPM)进行了滑坡运动过程的模拟,揭示了滑坡... 详细信息

贵州省国道G326松桃县甘龙镇石板村田堡组顺层滑坡是2020年强降雨诱发的滑坡灾害.在对滑坡变形破坏特征调查的基础上,分析了强降雨诱发滑坡滑动破坏的成因.采用物质点法(materialpointmethod,MPM)进行了滑坡运动过程的模拟,揭示了滑坡运动的速度和冲击荷载等变化规律.结果表明:国道G326滑坡是受2020年7月8日的强降雨诱发的中型顺层岩质滑坡,在8日4时的小时降雨量为96.2mm后约3h发生整体滑移破坏;物质点法能够较真实地模拟滑坡的运动、堆积过程,模拟的堆积体形态与滑坡破坏调查情况基本一致;滑坡岩土体的最大滑动速度为27m/s,最大滑动动能为1.8×109J(15s左右),最大冲击力为37.98×106kN,位于距滑坡后缘约230m处.该研究对国道G326沿线类似滑坡灾害的风险防控具有参考价值和工程借鉴意义.

关键词：降雨滑坡顺层滑动运动过程模拟物质点法冲击荷载

Growth of Ag/g-C_(3)N_(4) nanocomposites on nickel foam to enhance photocatalytic degradation of formaldehyde under visible light

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Journal of Environmental Sciences 2024年第3期137卷 432-442页

作者： ze Wang Zhi Huang jiang Yu Xiao Shao Weidong Peng Jie Yu Yinying jiang Department of Environmental Science and Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Institute of New Energy and Low Carbon Technology Sichuan UniversityChengdu 610065China School of Agriculture and Environment University of Western AustraliaPerth 6907Western AustraliaAustralia Yibin Institute of Industrial Technology Sichuan UniversityYibin 644000China

Formaldehyde is a pollutant that significantly affects the indoor air ***,conventional remediation approaches can be challenging to deal with low-concentration formaldehyde in an indoor *** this study,Photocatalysts of Ag/graphitic carbon nitride(g-C_(3)N_(4))/Ni with 3D reticulated coral structure were prepared by thermal polymerization and liquid phase photo-deposition,using nickel foam(NF)as the *** demonstrated that when the Ag concentration was 3%,and the relative humidity was 60%,the Ni/Ag/g-C_(3)N_(4)showed the maximum degradation rate of formaldehyde at 90.19%under visible light irradiation,and the formaldehyde concentration after degradation was lower than the Hygienic standard stated by the Chinese *** porous structure of Ni/Ag/g-C_(3)N_(4)and the formation of Schottky junctions promoted the Adsorption efficiency and degradation of formaldehyde,while the nickel foam carrier effectively promoted the desorption of degradation ***,the degradation rate was only reduced by3.4%after 16 recycles,the three-dimensional porous structure extended the lifetime of the *** study provides a new strategy for the degradation of indoor formaldehyde at low concentrations.

关键词： Graphitic carbon nitride(g-C_(3)N_(4)) Nickel foam(NF) Ag Formaldehyde Photocatalysis

Possible Contribution of Mature γ-ray Pulsars to Cosmic-ray Positrons

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Chinese Journal of Astronomy and Astrophysics 2008年第1期8卷 87-95页

作者： Quan-Gui Gao ze-Jun jiang Li Zhang National Astronomical Observatories / Yunnan Observatories Chinese Academy of Sciences Kunming 650011 Department of Physics Yunnan University Kunming 650091

We restudy the possible contribution of mature gamma-ray pulsars to cosmic ray positrons based on the new version of outer gap model. In this model, the inclination angle and average properties of the outer gap are taken into account, and more mature pulsars can have the outer gap and emit high energy photons. Half of the primary particles in the outer gaps will flow back toward the star surface and emit synchrotron photons, which can produce electron/positron pairs by the cascade of pair production. Some of these pairs will escape from the light cylinder and be accelerated to relativistic energies in the pulsar wind driven by low-frequency electromagnetic waves. Using a Monte Carlo method, we obtain a sample of mature gamma-ray pulsars and then calculate the production of the positrons from these pulsars. The observed excess of cosmic positrons can be well explained by this model.

关键词： stars pulsars general - acceleration of particles - ISM cosmic rays

Adaptive beam forming for time-variant channels with a multi-beam antenna

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The Journal of China Universities of Posts and Telecommunications 2008年第3期15卷 37-40页

作者： jiang ze MEI Yuan-yuan RUAN Wei College of Electronic Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China

A multi-beam adaptive antenna is investigated by considering the adaptive beam forming performance for time-variant channels on the focus of mobile to base station or reverse link. This antenna is constructed by Fresnel zone phase-correcting plane （FZP） focusing element and uniformly spaced feeds array. An estimator for the beamforming weight vector in the presence of angle spreads is derived using a code filtering approach. Owing to the time-varying nature of the channels, a recursive method for computing and tracking the above optimal weight vector solution that is easy to implement is applied. The effects of angle spread, maximum Doppler frequency, and forgetting factor are studied. Simulation results showed that this type of adaptive antenna is capable of performing adaptive beam forming for time-variant channels effectively.

关键词： adaptive antenna adaptive beam forming FZP mismatch loss

Aerobic glycolysis and high level of lactate in cancer metabolism and microenvironment

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Genes & Diseases 2017年第1期4卷 25-27页

作者： bo jiang Department of Oncology Avis General HospitalBeijingChina

Metabolic abnormalities is a hallmark of *** 100 years ago,Nobel laureate Otto Heinrich Warburg first described high rate of glycolysis in cancer *** more and more novel opinions about cancer metabolism supplement to this hypothesis,consist of glucose uptake,lactic acid generation and secretion,acidification of the microenvironment and cancer immune *** we briefly review metabolic pathways generating lactate,and discuss the function of higher lactic acid in cancer microenvironments.

关键词： Aerobic glycolysis Cancer metabolism Glucose metabolism Immune escape Lactate