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Kerr black hole shadows cast by extraordinary light rays with Weyl corrections

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 18-26页

作者： Songbai chen Jiliang Jing Department of Physics Institute of Interdisciplinary StudiesKey Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of EducationSynergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

We investigate the equation of motion for photons with Weyl corrections in a Kerr black hole spacetime in a small coupling *** results show that Weyl corrections yield phenomena of *** light rays propagating in the spacetime are separated into the ordinary rays and the extraordinary rays,and the propagation of the latter depends on the *** probe the effects of Weyl corrections on the Kerr black hole shadows casted by the extraordinary rays and find that such corrections result in a weak stretching or squeezing in the vertical direction for the black hole ***,we also study the change of the length of the Near-Horizon Extremal Kerr line(NHEK line)with Weyl *** features could help us to understand the electrodynamics with Weyl corrections from black hole shadows.

关键词： correction light stretching

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Balancing Exploration–Exploitation of Multi-verse Optimizer for Parameter Extraction on Photovoltaic Models

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Journal of Bionic Engineering 2024年第2期21卷 1022-1054页

作者： Yan Han Weibin chen Ali Asghar Heidari Huiling chen Xin Zhang College of Computer Science and Artificial Intelligence Wenzhou UniversityWenzhou325035China School of Surveying and Geospatial Engineering College of EngineeringUniversity of TehranTehranIran School of Biomedical Engineering National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China Key Lab of Biohealth Materials and Chemistry of Wenzhou Wenzhou UniversityWenzhouChina Key Laboratory of Intelligent Informatics for Safety&Emergency of Zhejiang Province Wenzhou UniversityWenzhouChina

Extracting photovoltaic(PV)model parameters based on the measured voltage and current information is crucial in the simulation and management of PV *** accurately and reliably extract the unknown parameters of different PV models,this paper proposes an improved multi-verse optimizer that integrates an iterative chaos map and the Nelder–Mead simplex method,*** experiments verified that the proposed INMVO fueled by both mechanisms has more affluent populations and a more reasonable balance between exploration and ***,to verify the feasibility and competitiveness of the proposal,this paper employed INMVO to extract the unknown parameters on single-diode,double-diode,three-diode,and PV module four well-known PV models,and the high-performance techniques are selected for *** addition,the Wilcoxon signed-rank and Friedman tests were employed to test the experimental results *** evaluation metrics,such as root means square error,relative error,absolute error,and statistical test,demonstrate that the proposed INMVO works effectively and accurately to extract the unknown parameters on different PV models compared to other *** addition,the capability of INMVO to stably and accurately extract unknown parameters was also verified on three commercial PV modules under different irradiance and *** conclusion,the proposal in this paper can be implemented as an advanced and reliable tool for extracting the unknown parameters of different PV *** that the source code of INMVO is available at https://***/woniuzuioupao/INMVO.

关键词： Photovoltaic models Multi-verse optimizer Nelder-Mead simplex Iterative chaos map

Background and Research Prospect of Geo-ecological Survey and Monitor in the Critical Zone of Black Soil

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Acta Geologica Sinica(English Edition) 2019年第S1期93卷 126-129页

作者： LI Zhizhong WANG Daming DAI Huimin WANG Xisheng LIANG Shuai XU Jiang YANG Jiajia WANG Lei chen shengbo A lecos DEMETRIADES Veronika KOPACKOVA Igor SAVIN Douglas A.HOWARD Timothy FILLEY GENG Xiaoyuan Shenyang Geological Survey of China Geological Survey Shenyang 110030LiaoningChina China Geological Survey Beijing 100000China Institute of Geomechanics Chinese Academy of Geological SciencesBeijing 100000China British Geological Survey Ctr Environm SciNottingham NG125GGEngland Jilin University Institute of Geology and Mineral Exploration Olympic VillageChangchun 130026JilinChina Czech Geological Survey Remote Sensing DepartmentPrague11821Czech Republic Russian Academy of Sciences Kirensky Institute of Physics Krasnoyarsk660036Russia Department of Geology Arizona State University TempeArizona85287-1404USA Purdue Univ Dept Earth Atmospher&Planetary Sci550 Stadium Mall DrW LafayetteIN 47907USA Kentville Research and Development Centre Agriculture and Agri-Food CanadaKentvilleNS B4N 1J5Cancda

The American Science journal,on the occasion of its 125 publication anniversary,in 2016,released 125 of the most challenging scientific issues(Kennedy et al.,2005)to the *** to the basics,breadth and the influence,25 of the issues which considered to be the most important were screened,including"How many people can the Earth carry?"(Stokstad,2005;Dailyg et al.,1992;Cohen,1995)and"How high will the greenhouse effect make the earth temperature?

关键词： black soils resource black soil critical zone earth critical zone

UAV-assisted data collection for wireless sensor networks with dynamic working modes

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Digital Communications and Networks 2024年第3期10卷 805-812页

作者： Jie chen Jianhua Tang Shien-Ming Wu School of Intelligent Engineering South China University of TechnologyGuangzhou511442China

Wireless Sensor Network(WSN)is a cornerstone of Internet of Things(IoT)and has rich application *** this work,we consider a heterogeneous WSN whose sensor nodes have a diversity in their Residual Energy(RE).In this work,to protect the sensor nodes with low RE,we investigate dynamic working modes for sensor nodes which are determined by their RE and an introduced energy ***,we employ an Unmanned Aerial Vehicle(UAV)to collect the stored data from the heterogeneous *** aim to jointly optimize the cluster head selection,energy threshold and sensor nodes’working mode to minimize the weighted sum of energy con-sumption from the WSN and UAV,subject to the data collection rate *** this end,we propose an efficient search method to search for an optimal energy threshold,and develop a penalty-based successive convex approximation algorithm to select the cluster *** we present a low-complexity iterative approach to solve the joint optimization problem and discuss the implementation *** results justify that our proposed approach is able to reduce the energy consumption of the sensor nodes with low RE significantly and also saves energy for the whole WSN.

关键词： Unmanned aerial vehicle Wireless sensor networks Cluster heads Dynamic working modes

Atmospheric oxidation capacity and O_(3) formation in a coastal city of southeast China:Results from simulation based on four-season observation

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Journal of Environmental Sciences 2024年第2期136卷 68-80页

作者： Gaojie chen Taotao Liu Jinsheng chen Lingling Xu Baoye Hu chen Yang Xiaolong Fan Mengren Li Youwei Hong Xiaoting Ji Jinfang chen Fuwang Zhang Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Minnan Normal University Zhangzhou 363000China College of Harbour and Coastal Engineering Jimei UniversityXiamen 361021China Environmental Monitoring Center of Fujian Fuzhou 350013China

The pollution of atmospheric ozone in China shows an obvious upward trend in the past ***,the studies on the atmospheric oxidation capacity and O_(3)formation in four seasons in the southeastern coastal region of China with the rapid urbanization remain ***,a four-season field observation was carried out in a coastal city of southeast China,using an observation-based model combining with the Master Chemical Mechanism,to explore the atmospheric oxidation capacity(AOC),radical chemistry,O_(3)formation pathways and *** results showed that the average net O_(3)production rate(14.55 ppbv/hr)in summer was the strongest,but the average O_(3)concentrations in autumn was *** AOC and ROx levels presented an obvious seasonal pattern with the maximum value in summer,while the OH reactivity in winter was the highest with an average value of 22.75 sec^(-1).The OH reactivity was dominated by oxygenated VOCs(OVOCs)(30.6%-42.8%),CO(23.2%-26.8%),NO_(2)(13.6%-22.0%),and alkenes(8.4%-12.5%)in different *** photolysis dominated OH primary source on daytime in winter,while in other seasons,HONO photolysis in the morning and ozone photolysis in the afternoon contributed *** analysis indicated that O_(3)production was controlled by VOCs in spring,autumn and winter,but a VOC-limited and NOx-limited regime in summer,and alkene and aromatic species were the major controlling factors to O_(3)***,the study characterized the atmospheric oxidation capacity and elucidated the controlling factors for O_(3)production in the coastal area with the rapid urbanization in China.

关键词： Atmospheric oxidation capacity Radical chemistry Ozone production Sensitivity analysis

Remodel the perifollicular microenvironment via Minoxidil-loaded microneedle patch and cold atmospheric plasma for treating androgenetic alopecia

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Nano Research 2024年第7期17卷 6411-6419页

作者： Hao chen Xianzhe Tang Yueye Huang chen chen Yuheng Yang Chaojie Hao Wenqi Xie Tingjing Huang Xiaofeng cheng Qingnan Xu Shicong Huang Zhi Ye Xucong Lin Zhaowei chen Zhitong chen MOE Key Laboratory for Analytical Science of Food Safety and Biology and New Cornerstone Science LaboratoryCollege of ChemistryFuzhou UniversityFuzhou 350108China Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Advanced Therapeutic Center National Innovation Center for Advanced Medical DevicesShenzhen 518000China Department of Chemistry University College LondonLondon WC1H 0AJUK Engineering Technology Research Center on Reagent and Instrument for Rapid Detection of Product Quality and Food Safety in Fujian Province College of ChemistryFuzhou UniversityFuzhou 350108China Key Laboratory of Biomedical Imaging Science and System Chinese Academy of SciencesShenzhen 518055China

Androgenetic alopecia(AGA)is a chronic and progressive form of hair loss characterized by vascular degeneration in the perifollicular microenvironment,leading to cell apoptosis and eventual loss of hair follicles(HFs).Traditional therapeutic formulations,such as Minoxidil(MXD)tincture,have limitations in reshaping the perifollicular microenvironment and exhibit limited ***,we report a multi-synergistic therapeutic platform for high-performance hair regeneration *** platform combines microneedle(MN)patches loaded with MXD-encapsulated nanostructured lipid carriers(MXD-NLC-MNs)and cold atmospheric plasma(CAP).The MNs’mechanical strength enables efficient transdermal delivery of MXD to the targeted dermal papilla cells,promoting cell ***,in collaboration with MXD,the mechanical stimulation exerted by MN application synergistically upregulates the expression of vascular endothelial growth factor,leading to ***,the transient microchannels in the skin created by MNs facilitate the transdermal delivery of CAPgenerated nitric oxide(NO)to the sites of HF lesions,whereby the synergistic interaction between MXD and NO boosts perifollicular ***,the perifollicular microenvironment can be effectively reshaped to accelerate hair regeneration in AGA murine *** multi-synergistic combination therapy strategy would hold great promise for effectively treating AGA and promoting hair regrowth.

关键词： nanomedicine androgenetic alopecia microneedle cold atmospheric plasma drug delivery

苏子河流域土地利用变化对大伙房水库水量的影响

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吉林大学学报（地球科学版） 2023年第1期53卷 320-327页

作者：张斌陈圣波张梦娇张玉峰张澜赵秀影吉林大学地球探测科学与技术学院长春130026 空军航空大学长春130022

土地利用变化影响着地表径流,分析其变化规律与驱动力有利于实现土地资源与水资源的合理利用。本研究以大伙房水库上游苏子河流域为研究对象,运用转移矩阵分析法、相关分析法等分析方法,评估了气候因素、人为因素及土地利用变化对大伙... 详细信息

土地利用变化影响着地表径流,分析其变化规律与驱动力有利于实现土地资源与水资源的合理利用。本研究以大伙房水库上游苏子河流域为研究对象,运用转移矩阵分析法、相关分析法等分析方法,评估了气候因素、人为因素及土地利用变化对大伙房水库水量的影响,并主要从土地利用角度进行了分析,探讨水库水域面积增加的原因。结果表明:2000—2020年,水库水域面积呈逐年增加趋势,流域内最主要的两种土地利用变化为林地面积增加、农田面积减少,且两者均对流域产水量起到正效应;同时,气候因素的变化也对水库水量的增加起到正效应。

关键词：土地利用转移矩阵相关分析水量驱动力大伙房水库苏子河流域

基于地面实测光谱的水系沉积物重金属含量反演

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吉林大学学报（地球科学版） 2014年第4期44卷 1388-1394页

作者：陈圣波李鑫龙陈磊吉林大学地球探测科学与技术学院长春130026

水系沉积物中的重金属元素含量调查是矿区环境受污染程度的重要依据，同时水系沉积物的物源组成也是近年来找矿突破的重要环节之一。通过分析水系沉积物中羟基官能团与重金属游离态阳离子之间的吸附反应，结合地面实测高光谱数据，发现... 详细信息

水系沉积物中的重金属元素含量调查是矿区环境受污染程度的重要依据，同时水系沉积物的物源组成也是近年来找矿突破的重要环节之一。通过分析水系沉积物中羟基官能团与重金属游离态阳离子之间的吸附反应，结合地面实测高光谱数据，发现与重金属元素含量相关性较好的波谱波段为500～780 nm 与2100～2300 nm，建立基于地面实测光谱技术反演水系沉积物中重金属元素含量的回归方程，最后利用反距离权重方法成功提取碾子沟-洛金洼多金属矿区3条冲沟水系沉积物中 Cu、Zn 等重金属元素含量。结果显示：重金属 Cu 和 Zn 模型检验精度（R 2）分别为0．618和0．636；研究区内冲沟源头山地林地附近流域沉积物中的重金属含量相对中下游矿区周边农用地较低，同时沉积土壤中的重金属含量随着冲沟流向呈升高趋势。重金属含量较高的中游农用地附近应加以治理，含量异常的中下游区域为今后的找矿方向。

关键词：高光谱水系沉积物土壤重金属光谱特征参数反演

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利用嫦娥二号微波辐射计数据的全月亮温制图

武汉大学学报（信息科学版） 2015年第6期40卷 732-737页

作者：连懿陈圣波孟治国张莹吉林大学地球探测科学与技术学院吉林长春130021

中国嫦娥绕月卫星在世界上首次搭载了微波辐射计,用于获取不同深度月壤的微波辐射亮温,而这正是月壤厚度研究和月壤表层参数信息反演的基础。基于嫦娥二号的微波辐射计2C级数据,建立4个频率通道(3.0、7.8、19.35、37.0GHz)在不同纬度下... 详细信息

中国嫦娥绕月卫星在世界上首次搭载了微波辐射计,用于获取不同深度月壤的微波辐射亮温,而这正是月壤厚度研究和月壤表层参数信息反演的基础。基于嫦娥二号的微波辐射计2C级数据,建立4个频率通道(3.0、7.8、19.35、37.0GHz)在不同纬度下的亮温日变化模型,并通过该模型对亮温数据进行时角校正,得到了正午时刻的全月微波亮温图。结合CCD影像和DEM数据比较的结果表明,处理后的亮温数据很好地反映了月球的地形特征及月表的反射率信息。基于高频的亮温数据对月球亮温异常区域进行了分析,发现其都是哥白尼纪的新鲜撞击坑。

关键词：嫦娥二号卫星微波辐射计亮温时角