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CSEE Journal of Power and Energy Systems 2024年第1期10卷 302-313页

作者： Lei Dong Mengting Li Junjie Hu Sheng Chen Tao zhang Xinying Wang Tianjiao Pu school of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China Department of Artificial Intelligence Application Research China Electric Power Research InstituteBeijing 100192China Key Laboratory of Smart Grid of Ministry of Education Key Laboratory of Smart Energy&Information Technology of Tianjin MunicipalityTianjin UniversityTianjin 300072China

Regional integrated energy system(RIES)cluster,i.e.,multi-source integration and multi-region coordination,is an effective approach for increasing energy utilization *** hierarchical architecture and limited information sharing of RIES cluster make it difficult for traditional game theory to accurately describe their game ***,a hierarchical game approach considering bounded rationality is proposed in this paper to balance the interests of optimizing RIES cluster under privacy protection.A Stackelberg game with the cluster operator(CO)as the leader and multiple RIES as followers is developed to simultaneously optimize leader benefit and RIES utilization ***,a slight altruistic function is introduced to simulate the game behavior of each RIES agent on whether to cooperate or *** introducing an evolutionary game based on bounded rationality in the lower layer,the flaw of the assumption that participants are completely rational can be ***,for autonomous optimal dispatching,each RIES is treated as a prosumer,fexibly switching its market participation role to achieve cluster coordination *** studies on a RIES cluster verify effectiveness of the proposed approach.

关键词： Bounded rationality coordinated optimization evolutionary game regionaIilntegrated energysystem stackelberg game

野化放归丹顶鹤活动节律、家域特征和栖息地选择

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生态学报 2024年第4期44卷 1526-1538页

作者：陈浩王刚王成薛菲成海张亚楠江苏盐城湿地珍禽国家级自然保护区盐城224333 盐城师范学院城市与规划学院盐城224007 盐城师范学院苏北农业农村现代化研究院盐城224007 盐城师范学院盐城城乡融合发展研究院盐城224007 安徽农业大学经济管理学院合肥230036 盐城师范学院海洋与生物工程学院盐城224007

了解野放丹顶鹤的运动模式、家域和栖息地选择的时间节律特征对丹顶鹤种群保护和栖息地管理尤为重要。基于GPS-GSM跟踪数据,综合运用3S技术、动态布朗桥模型、栖息地选择指数,研究了盐城海滨湿地野放丹顶鹤在不同生活周期的活动节律、... 详细信息

了解野放丹顶鹤的运动模式、家域和栖息地选择的时间节律特征对丹顶鹤种群保护和栖息地管理尤为重要。基于GPS-GSM跟踪数据,综合运用3S技术、动态布朗桥模型、栖息地选择指数,研究了盐城海滨湿地野放丹顶鹤在不同生活周期的活动节律、家域的面积和重叠指数,以及栖息地选择。结果表明:(1)丹顶鹤日活动节律具有明显的周期性特征。丹顶鹤活动强度:育成期>越冬期>孵化期>育雏期,孵化期和育雏期日间活动强度平稳,育成期和越冬期呈“双峰”模式。(2)丹顶鹤95%家域面积均值介于(111.18±22.15)hm^(2)-(621.28±105.77)hm^(2),育成期((621.28±105.77)hm^(2))>育雏期((226.83±54.86)hm^(2))>孵化期((112.40±7.72)hm^(2))>越冬期((111.18±22.15)hm^(2));核心家域面积均值介于(0.53±0.26)-(45.78±6.66)hm^(2),育成期((45.78±6.66)hm^(2))>育雏期((12.73±3.67)hm^(2))>越冬期((5.18±1.59)hm^(2))>孵化期((0.53±0.26)hm^(2))。不同生活周期家域重叠值为31.08%-46.84%,不同年份重叠值为29.20%-76.21%。(3)家域尺度内,栖息地选择率具有周期性差异。孵化期选择中高覆盖度芦苇生境;育雏期选择水塘生境、中高覆盖度生境以及距水塘潮沟100 m以内生境;育成期选择水塘生境、低和中低覆盖度生境以及距离水塘0-100 m生境;越冬期选择水塘生境、中高覆盖度生境以及距水塘0-100 m生境。研究可为丹顶鹤种群保护和栖息地管理提供科学依据。

关键词：丹顶鹤活动节律家域栖息地选择盐城海滨湿地

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Application of GNSS-PPP on Dynamic Deformation Monitoring of Offshore Platforms

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China Ocean Engineering 2024年第2期38卷 352-361页

作者： YU Li-na XIONG Kuan GAO Xi-feng LI Zhi FAN Li-long zhang Kai Institute of Ocean Energy and Intelligent Construction Tianjin University of TechnologyTianjin 300384China China Railway Construction Bridge Engineering Bureau Group Co.LTD Tianjin 300300China School of Civil Engineering Tianjin UniversityTianjin 300072China Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong KongChina State Key Laboratory of Precision Blasting Jianghan UniversityWuhan 430056China

The real-time dynamic deformation monitoring of offshore platforms under environmental excitation is crucial to their safe *** Global Navigation Satellite System-Precise Point Positioning(GNSS-PPP)has been considered for this purpose,its monitoring accuracy is relatively ***,the influence of background noise on the dynamic monitoring accuracy of GNSS-PPP remains ***,it is imperative to further validate the feasibility of GNSS-PPP for deformation monitoring of offshore *** address these concerns,vibration table tests with different amplitudes and frequencies are *** results demonstrate that GNSS-PPP can effectively monitor horizontal vibration displacement as low as±30 mm,which is consistent with ***,the spectral characteristic of background noise in GNSS-PPP is similar to that of GNSS-RTK(Real Time Kinematic).Building on this observation,an improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN)has been proposed to de-noise the data and enhance the dynamic monitoring accuracy of *** monitoring application research is also undertaken,successfully extracting and analyzing the dynamic deformation of an offshore platform structure under environmental excitation using GNSS-PPP monitoring in conjunction with improved CEEMDAN *** comparing the de-noised dynamic deformation trajectories of the offshore platform during different periods,it is observed that the platform exhibits reversible alternating vibration responses under environmental excitation,with more pronounced displacement deformation in the direction of load *** research results confirm the feasibility and potential of GNSS-PPP for dynamic deformation monitoring of offshore platforms.

关键词： GNSS-PPP offshore platform dynamic deformation monitoring improved CEEMDAN de-noising

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Well-designed g-C_(3)N_(4)nanosheet incorporated Ag loaded Er_(0.05)La_(0.95)FeO_(3)heterojunctions for isoamyl alcohol detection

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Journal of Advanced Ceramics 2024年第6期13卷 736-745页

作者： Kaichun Xu Mengjie Han Zichen Zheng Zexin Yu Hanlin Liao Hui Sun Chao zhang College of Mechanical Engineering Yangzhou UniversityYangzhou 225127China Institute for Manufacturing Technologies of Ceramic Components and Composites(IMTCCC) University of StuttgartStuttgart 70569Germany ICB UMR 6303 CNRSUniv.Bourgogne Franche-ComtéUTBMBelfort 90010France School of Space Science and Physics Shandong UniversityWeihai 264209China

Because the volatile content of isoamyl alcohol increases sharply on the seventh day of wheat mildew infection,isoamyl alcohol can be used as an early biomarker of wheat mildew ***,only a few sensors for isoamyl alcohol detection have been reported,and these sensors still suffer from low sensitivity and poor moisture ***,the isoamyl alcohol sensitivity of 5 at%Er@LaFeO_(3)(ELFO)was enhanced by loading Ag nanoparticles on the surface of the ELFO microspheres,while the optimal operating temperature was *** moisture resistance of Ag/ELFO was improved by the incorporation of g-C_(3)N_(4)nanosheets(NSs)on the surface of Ag/ELFO through electrostatic *** the requirements for practical applications in grain granaries,the sensing behavior of a Ag/ELFO-based sensor incorporating g-C_(3)N_(4)NSs at 20%relative humidity(RH)was systematically studied,and the sensor demonstrated excellent repeatability,long-term stability,and superior selectivity(791 at 50 ppm)for isoamyl alcohol with a low limit of detection(LOD=75 ppb).Furthermore,the practical results obtained for wheat at different mildew stages further confirmed the potential of the g-C_(3)N_(4)/Ag/ELFO-based sensor for monitoring the early mildew stage of *** work may offer guidance for enhancing the moisture resistance of gas-sensitive materials through the strategy of employing composite nanomaterials.

关键词： Ag gas sensor moisture resistance isoamyl alcohol Er@LaFeO_(3)(ELFO) g-C_(3)N_(4)nanosheet(NS)

Multiple damage zones around hydraulic fractures generated by high-frequency pulsating hydraulic fracturing

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Petroleum Science 2024年第4期21卷 2688-2702页

作者： Yan Peng Sheng-Jie Wei Guang-Qing zhang Da-Wei Zhou Chuang-Chao Xu School of Petroleum Engineering China University of Petroleum PetroChina Changqing Oilfield Company

Pulsating hydraulic fracturing(PHF) is a promising fracturing method and can generate a dynamic periodic pressure. The periodic pressure can induce fatigue failure of rocks and decrease initiation pressure of fracture. If the frequency of periodic pressure exceeds 10 Hz, the distribution of pressure along the main fracture will be heterogeneous, which is much different from the one induced by the common fracturing method. In this study, the impact of this special spatial feature of pressure on hydraulic fracture is mainly investigated. A coupled numerical simulation model is first proposed and verified through experimental and theoretical solutions. The mechanism of secondary fracture initiation around the main fracture is then discovered. In addition, sensitivity studies are conducted to find out the application potential of this new method. The results show that(1) this coupled numerical simulation model is accurate. Through comparison with experimental and theoretical data, the average error of this coupled model is less than 1.01%.(2) Even if a reservoir has no natural fracture, this heterogeneous distribution pressure can also cause many secondary fractures around the main fracture.(3) The mechanism of secondary fracture initiation is that this heterogeneous distribution pressure causes tensile stress at many locations along the main fracture.(4) Through adjusting the stimulation parameters, the stimulation efficiency can be improved. The average and amplitude of pressure can increase possibility of secondary fracture initiation. The frequency of this periodic pressure can increase number of secondary fractures. Even 6 secondary fractures along a 100 m-length main fracture can be generated.(5) The influence magnitudes of stimulation parameters are larger than ones of geomechanical properties, therefore, this new fracturing method has a wide application potential.

关键词： Tight reservoir Reservoir stimulation Numerical simulation Secondary fracture Fracture initiation

Numerical simulation on gas-solid flow during circulating fluidized roasting of bauxite by a computational particle fluid dynamics method

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Particuology 2024年第7期90卷 179-188页

作者： Chengming Xie Rongbin Li Qijin Wei Fengqin Liu Hongliang Zhao Yongmin zhang Hong Yong Sohn State Key Laboratory of Green and Low-carbon Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China BGRIMM Technology Group Beijing 100160China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China Department of Materials Science and Engineering The University of UtahSalt Lake CityUT 84112USA

A full-cycle numerical simulation of a circulating fluidized bed(CFB)by the use of the computational particle fluid dynamics(CPFD)method has been *** effects of the presence or absence of the secondary air,different secondary air positions,and different secondary air ratios on the gas–solid flow characteristics were *** results show that the presence of the secondary air makes a core-annular structure of the velocity distribution of particles in the fluidized bed,which enhances the uniformity of particles’distribution and the stability of *** position and the ratio of the secondary air have a significant impact on the particle distribution,particle flow rate,and gas flow rate in the fluidized *** the secondary air position and ratio are optimal,the particles,particle flow rate,and air flow rate in the CFB are evenly distributed,the gas–solid flow state is good,and the CFB can operate stably.

关键词： Circulating fluidized bed CPFD method Secondary air position Secondary air ratio Gas–solid flow characteristics

Severe fever with thrombocytopenia syndrome virus infection attributed to cat contact:A case report in Beijing,China

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Virologica Sinica 2024年第3期39卷 513-515页

作者： Shuo zhang Yu Leng Fa-Xue zhang Bo-Kang Fu Bing-Zheng Wu Jia-Hao Chen Ning Cui Ning Zhao Wei Liu Hao Li College of Life Sciences Southwest Forestry UniversityKunming650224China State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyBeijing Key Laboratory of Vector Borne and Natural Focus Infectious DiseasesBeijing100071China School of Public Health Wuhan UniversityWuhan430071China The First Affiliated Hospital of Anhui Medical University Hefei230022China Xinyang 154 Hospital Xinyang464000China

Dear Editor,Severe fever with thrombocytopenia syndrome(SFTS)is an emerging tick-borne infectious disease caused by a novel bunyavirus called SFTS virus(SFTSV).It was initially identified in China in 2009(Yu et al.,2011).Since then,the number of reported SFTS cases has rapidly increased in China,South Korea,and Japan(Li,et al.,2018;Takahashi et al.,2014;Kim et al.,2018).Sporadic SFTS cases have also been identified in several other Asian countries,such as Vietnam,Pakistan,Myanmar,and Thailand(Takahashi et al.,2014;Tran et al.,2019;Li et al.,2021).This disease is recognized as a highly lethal viral hemorrhagic fever with a mortality rate ranging from 12%to 50%(Yu et al.,2011;Li et al.,2018;Takahashi et al.,2014;Kim et al.,2013).SFTS primarily spreads to humans through bites from ticks infected with SFTSV,with the Haemaphysalis longicornis tick acting as the predominant vector for SFTSV(Zhuang et al.,2018).

关键词： attributed initially predominant

刺五加中4个木脂素成分的药代动力学及生物利用度研究

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药物分析杂志 2024年第5期44卷 841-850页

作者：张锦钰李艳翠孙长海佳木斯大学药学院佳木斯154007

目的:建立超高效液相色谱-串联质谱(UPLC-MS/MS)方法测定大鼠血浆中刺五加提取液中7-羟基香豆素、秦皮素、异嗪皮啶、东莨菪内酯4个成分的含量,评价大鼠体内的药代动力学行为和生物利用度。方法:采用Thermo Scientific Hypersil GOLD a... 详细信息

目的:建立超高效液相色谱-串联质谱(UPLC-MS/MS)方法测定大鼠血浆中刺五加提取液中7-羟基香豆素、秦皮素、异嗪皮啶、东莨菪内酯4个成分的含量,评价大鼠体内的药代动力学行为和生物利用度。方法:采用Thermo Scientific Hypersil GOLD aQ色谱柱(100 mm×2.1 mm,1.9μm),以0.1%甲酸-水(A)和0.1%甲酸-乙腈(B)(82∶18)为流动相,流速0.30 mL·min^(-1),柱温40℃;质谱正离子模式扫描,进样量5μL;选取健康SD大鼠,单次灌胃10 mL·kg^(-1)(相当于原药1 g·kg^(-1)剂量)的刺五加提取液,测定给药后不同时间间隔的待测物质血浆浓度,利用DAS软件,经非房室模型拟合计算药代动力学参数。结果:7-羟基香豆素(r=0.9994)、秦皮素(r=0.9989)、异嗪皮啶(r=0.9993)、东莨菪内酯(r=0.9984)质量浓度在0.05~55μg·mL^(-1)范围内线性关系良好,精密度RSD均<15%,回收率均在85%~115%。绝对生物利用度均在59%~78%,相对生物利用度均在80%~87%。提取回收率、基质效应和稳定性均满足相关要求。结论:大鼠单次灌胃刺五加提取液后,4个待测物质均被大鼠吸收和消除,方法验证结果符合生物样本分析方法指导原则,可用于评价刺五加提取液在大鼠体内的药代动力学行为和生物利用度。

关键词：刺五加药物代谢动力学生物利用度 7-羟基香豆素秦皮素异嗪皮啶东莨菪内酯统计矩量法超高效液相色谱-串联质谱

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Decreasing productivity of pine forests on the southern edge of the Mongolian Plateau as indicated by tree rings

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Journal of Forestry Research 2024年第5期35卷 171-181页

作者： Zhuolan Shen Shijie Wang Feng Chen Heli zhang Xiaoen Zhao Youping Chen Mao Hu Yunnan Key Laboratory of International Rivers and Transboundary Eco‑Security Institute of International Rivers and Eco‑SecurityYunnan UniversityKunming 650500People’s Republic of China Southwest United Graduate School Kunming 650500People’s Republic of China Key Laboratory of Tree-Ring Physical and Chemical Research of China Meteorological Administration/Xinjiang Laboratory of Tree-Ring Ecology Institute of Desert MeteorologyChina Meteorological AdministrationÜrümqi 830002People’s Republic of China

Vegetation productivity on the southern edge of the Inner Mongolian Plateau,which plays a vital role in the ecological environment and in the arable and pasto-ral production in this region,can be characterized by the NDVI(normalized difference vegetation index).However,the observed NDVI data span only the last~40 *** growth of Pinus tabulaeformis *** strongly correlated with the NDVI,making it a valuable proxy for extend-ing the length of observed NDVI *** this study,we reconstructed an NDVI series for 1776–2021 for the Daqing Mountains,based on a tree-ring width *** reconstructed data accounted for 55%of the variance in the observed data,and its statistical characteristics and validation indicate that the reconstruction is *** correlation analysis demonstrated the consistency of climate signals in central Inner Mongolia in both the arable and pastoral *** results of superposed epoch analysis revealed a good temporal consistency between drought and flood events and the reconstructed NDVI sequence in this region.

关键词： Drought Semi-arid area Peru current Yinshan Mountains

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萨赫勒地区安全治理困境探源

国际关系研究 2024年第1期 87-111,M0005,M0006页

作者：张春杨琦云南大学国际关系研究院

利比亚战争结束以来,萨赫勒地区安全态势持续恶化,地区安全治理陷入长期性和结构性困境,主要体现为两个方面:一是地区安全和发展面临严峻挑战,从冲突陷阱到贫困陷阱,从气候陷阱再到治理陷阱,使该地区演变为典型的安全复合体;二是随着地... 详细信息

利比亚战争结束以来,萨赫勒地区安全态势持续恶化,地区安全治理陷入长期性和结构性困境,主要体现为两个方面:一是地区安全和发展面临严峻挑战,从冲突陷阱到贫困陷阱,从气候陷阱再到治理陷阱,使该地区演变为典型的安全复合体;二是随着地区不稳定因素的升级和扩散,各类治理行为体的纷纷涌入事实上造成了“安全拥堵”,非但没有缓解地区安全局势,反而制造了更大麻烦。萨赫勒地区安全治理困境的根本原因在于,内部自主治理和外部安全援助均严重忽视发展—安全—治理关联,其“治标不治本”的方法难以从根源上解决地区安全挑战。中国式现代化坚持发展优先、发展与安全统筹的成功经验,可为萨赫勒地区摆脱安全治理困境、迈向可持续稳定与和平提供重要启示。

关键词：地区安全复合体萨赫勒五国集团安全陷阱安全拥堵中国式现代化

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