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Does ash dieback affect the reproductive ecology of Fraxinus excelsior L.?

Journal of Forestry Research 2024年第2期35卷 54-69页

作者： Anna‑Katharina Eisen Lisa Buchner Barbara Fussi Susanne Jochner‑Oette Physical Geography/landscape Ecology and Sustainable Ecosystem Development Catholic University of Eichstätt-Ingolstadt85072 EichstättGermany Bavarian Office for Forest Genetics(AWG) 83317 TeisendorfGermany

Forest tree species reproduction is a key factor in maintaining the genetic diversity of future generations and the stability of forest *** ongoing ash dieback disease could affect the reproductive ecology of Fraxinus excelsior *** have a major impact on the quantity and quality of pollen and *** this study,we investigated pollen production and viability of pollen and seeds of ash trees with different health status from 2018 to *** were collected from 105 trees(pollen production),pollen from 125 trees(pollen viability),and seeds from 53 trees(seed quality)in two seed orchards and in one floodplain forest in southern *** all parameters were examined at every site every *** average pollen production per tree was estimated at 471.2±647.9 billion pollen *** addition,we found that a high number of inflorescences did not equate to high pollen production per *** production of healthy and diseased trees did not differ significantly,although only 47%of severely diseased male trees(vs.72%for healthy trees)produced *** regards to pollen viability,the TTC test showed an average viability of 73%±17%.Overall,there was a slight tendency for diseased trees to have less viable ***,a significant difference could only be calculated for trees in the floodplain *** percentage of germinable seeds in 2018 was 38%in the floodplain forest and 57%in one of the seed *** percentage of viable seeds(TTC test)ranged from 17 to 22%in the orchards in ***-viable seeds were usually heavily infested by *** general,seed quality was not significantly different between healthy and diseased *** results indicate that ash dieback affects flower formation and pollen viability but not pollen production or seed ***,the fact that hardly any flowering was observed,especially for trees that were seriously affected,suggests a negative effect of ash dieback on reproductive per

关键词： Common ash Seed orchard Floodplain forest Pollen production Viability TTC test Seed stratification Phenology

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Directives and references in selected coronavirus-motivated internet memes

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Language and Semiotic studies 2024年第2期10卷 245-266页

作者： Ayo Osisanwo Toluwalope Mary Falade Department of English University of IbadanIbadanNigeria institute of English studies Leuphana UniversitätLüneburgGermany Department of English and General studies Ladoke Akintola UniversityOgbomosoNigeria

The use of directives in communicating the nature of the pandemic and reference to social experiences were promoted using images on social media *** images or memes are used to create awareness and reinforce the criteria for safety during the *** studies on internet memes have concentrated on humor generation,speaker-hearer shared knowledge,neologism,and multimodality among others,with insufficient attention paid to the use of directives and references in such coronavirus-motivated *** paper,therefore,examines how directives and references are employed in conveying expected social responsibilities through coronavirus-motivated internet memes in Nigeria and other socio-cultural *** data,one hundred coronavirus-motivated memes were purposively selected from Facebook,and eight representative memes were subjected to pragmatic analysis using aspects of Jacob Mey’s(***:An introduction,2nd ***:Blackwell Publishing)pragmatic acts theory to unearth insights from *** paper observes that the various spheres of life that are relatable to an online audience help to express what the pandemic is about and enhance the meaning of the pandemic with the context of the use of the memes,giving clearer perspectives on the *** and references are useful tools for conveying social responsibilities to online audience.

关键词： directives references coronavirus internet memes social responsibilities

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Whose Aid is Beneficial to Firms'Exports?Evidence from a Post-disaster Aid Experiment in China

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China & World Economy 2024年第2期32卷 73-96页

作者： Tan Li Qing Liu Lihe Xu School of International Business Southwestern University of Finance and EconomicsChina School of Economics Renmin University of ChinaChina institute of studies for the Greater Bay Area Guangdong University of Foreign StudiesChina

Post-disaster aid is widely regarded as important in helping local recovery and *** paper examines the effectiveness of post-disaster aid on exports,which are a driving factor of economic *** reports a natural experiment in China–the case of post-disaster aid following the Wenchuan earthquake in 2008–to examine how donors'experiences affected the exports of manufacturing firms in disaster-stricken *** export experience of the donor was *** coming from donors with more export experience was more beneficial to the exports of firms in recipient counties than aid from less experienced donors.“Learning from the donor”is a potential channel through which this effect *** is,firms in recipient counties learned from donors'export experience by exporting more products similar to those of donors,exporting more to the destination countries of donors,and participating in the donors'supply-chain networks by exporting more of the donors'***“learning from the donor”effects show that knowledge spillover can occur between spatially distant parties,which complements the literature.

关键词： China export knowledge spillover post-disaster aid

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Major-Countries Competition and Pivot to the Asia-Pacific:the Strategic Transformation and Influence of“Global NATO”

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Contemporary World 2024年第4期 30-33页

作者： Jin Ling Department for European studies at the China institute of International studies

As a product of the Cold War,NATO did not disintegrate with the end of it,but rather,it has sought to become“global NATO”through continuous expansion and transformation,in order to hold wider sway in international *** its 75-year history,NATO has made numerous moves including adopting confrontational security thinking,building exclusive alliances,conducting humanitarian intervention and crisis management,expanding eastward and northward and involving in the Asia-Pacific.

关键词： NATO Transformation integrate

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Species profile and reactivity of volatile organic compounds emission in solvent uses,industry activities and from vehicular tunnels

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Journal of Environmental Sciences 2024年第1期135卷 546-559页

作者： Haimei Huang Zhangwei Wang Chunhao Dai Hai Wu Jia Guo Chunjie Wang Xiaoshan Zhang State Key Laboratory of urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Hunan Agricultural University Changsha 430106China National institute of Metrology Beijing 100029China

A survey was conducted of the volatile organic compounds(VOCs)released from sources of solvent use,industry activities and vehicle emissions in Guiyang,a capital city of *** were collected by canisters and analyzed by *** species profiles of VOCs emitted from sources were *** showed that xylenes,ethylbenzene,acetone and dichloromethane were the characteristics species for painting,2-propanol and ethyl acetate for printing,α-pinene for solid wood furniture manufacturing,and 2-butanone for biscuit *** characteristics species could be as tracers for the sources *** most of samples from the solvent use,the benzene/toluene(B/T)ratio was less than 0.3,indicating that the ratio could be as the indicator for tracing the solvent use related *** results also suggested that the toluene/xylene(T/X)ratio be as the indicator to distinguish the VOCs sources of painting(2).Aromatics contributed the most to ozone formation potential(OFP)of most painting and non-paper printing sources,and oxygen-containing VOCs(OVOCs)were major species contributing to OFP of the sources from food production and paper *** OFP of the VOCs emissions from vehicle in tunnels and from other manufactures were dominated by both aromatics and ***α-pinene could explain 56.94%and 32.54%of total OFP of the VOCs sources from filing cabinet and solid wood furniture manufacturing,which was rarely been involved in previous studies of VOCs source profiles,indicating that the species of concern for VOCs sources are still insufficient at present.

关键词： Volatile organic compounds(VOCs) Species profile BTEX ratio Source reactivity

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Pollen analysis reveals the effects of uncovered interactions,pollen-carrying structures,and pollinator sex on the structure of wild bee-plant networks

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Insect Science 2024年第3期31卷 971-988页

作者： Clément Tourbez Carmelo Gómez-Martínez MiguelÁngel Gonzalez-Estévez Amparo Lazaro Mediterranean institute for Advanced studies(UIB-CSIC) Global Change Research GroupEsporlesBalearic IslandsSpain Department of Biology Ecology AreaUniversity of the Balearic/slandsPalmaSpain

Pollination networks are increasingly used to model the complexity of interactions between pollinators and flowering plants in *** methods exist to sample these interactions,with direct observations of plant-pollinator contacts in the field being by far the most *** the identification of pollen carried by pollinators allows uncovering interactions and increasing sample sizes,the methods used to build pollen-transport networks are variable and their effect on network structure remains *** understand how interaction sampling influences the structure of networks,we analyzed the pollen found on wild bees from eight communities across Mallorca Island and investigated the differences in pollen loads between bee body parts(scopa ***)and *** then assessed how these differences,as well as the uncovered interactions not detected in the field,influenced the structure of wild bee-plant *** identified a higher quantity and diversity of pollen in the scopa than in the rest of the female body,but these differences did not lead to differences in structure between plant-pollination(excluding scopa pollen)and bee-feeding interaction(including scopa pollen)***,networks built with pollen data were richer in plant species and interactions and showed lower modularity and specialization(H2'),and higher nestedness than visitation networks based on field *** interactions with plants were stronger compared to those of males,although not ***,females were more generalist(low d')and tended to be more central in interaction networks,indicating their more key role structuring pollination networks in comparison to *** study highlights the importance of palynological data to increase the resolution of networks,as well as to understand important ecological questions such as the differences between plant-pollination and bee-feeding interaction networks,and the role of sexes in pollination.

关键词： palynology pollen-transport networks pollination role of bee sexes sampling methodology visitation networks

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Attitude control of multi-spacecraft systems on SO(3)with stochastic links failure

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Chinese Journal of Aeronautics 2024年第3期37卷 320-331页

作者： KANG Zeyu SHEN Qiang WU Shufan Chris J.DAMAREN MU Zhongcheng School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China institute for Aerospace studies University of TorontoTorontoOntario M3H 5T6Canada

In this paper,for Multi-Spacecraft System(MSS)with a directed communication topology link and a static virtual leader,a controller is proposed to realize attitude consensus and attitude stabilization with stochastic links failure and actuator ***,an MSS attitude error model suitable for a directed topology link and with a static virtual leader based on SO(3)is derived,which considers that the attitude error on SO(3)cannot be defined based on algebraic ***,we design a controller to realize the MSS on SO(3)with attitude consensus and attitude stabilization under stochastic links failure and actuator ***,the simulation results of a multi-spacecraft system with stochastic links failure and a static virtual leader spacecraft are demonstrated to illustrate the efficiency of the attitude controller.

关键词： Multi-spacecraft systems Attitude consensus Attitude stabilization Stochastic links failure Super-martingale convergence

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A Survey on Type-3 Fuzzy Logic Systems and Their Control Applications

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IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1744-1756页

作者： Oscar Castillo Fevrier Valdez Patricia Melin Weiping Ding Tijuana institute of Technology/Tecnologico Nacional de Mexico Division of Graduate StudiesCalzada Tecnologico S/NTijuana 22414Mexico School of Information Science and Technology Nantong UniversityJiangsu 226019China

In this paper,we offer a review of type-3 fuzzy logic systems and their applications in *** main objective of this work is to observe and analyze in detail the applications in the control area using type-3 fuzzy logic *** this case,we review their most important applications in control and other related topics with type-3 fuzzy *** algorithms have been receiving increasing attention in control and for this reason a review in this area is *** paper reviews the main applications that make use of Intelligent Computing ***,type-3 fuzzy logic *** aim of this research is to be able to appreciate,in detail,the applications in control systems and to point out the scientific trends in the use of Intelligent Computing *** is done with the construction and visualization of bibliometric networks,developed with VosViewer Software,which it is a free Java-based program,mainly intended to be used for analyzing and visualizing bibliometric *** this tool,we can create maps of publications,authors,or journals based on a co-citation network or construct maps of keywords,countries based on a co-occurrence networks,research groups,etc.

关键词： Applications control systems optimization review type-3 fuzzy logic.

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Investigation of HO_(2) uptake mechanisms onto multiple-component ambient aerosols collected in summer and winter time in Yokohama,Japan

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Journal of Environmental Sciences 2024年第3期137卷 18-29页

作者： Jun Zhou Yukiko Fukusaki Kentaro Murano Tania Gautam Yu Bai Yoshimi Inomata Hiroaki Komatsu Mayuko Takeda Bin Yuan Min Shao Yosuke Sakamoto Yoshizumi Kajii institute for Environmental and Climate Research Jinan UniversityGuangzhou 511443China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation forEnvironmental Quality Guangzhou 511443China Graduate School of Global Environmental studies Kyoto UniversityKyoto606-8501Japan Yokohama Environmental Science Research institute Yokohama Kanagawa 221–0024Japan Department of Chemistry University of AlbertaAlbertaEdmonton T6G 2G2Canada Graduate School of Human and Environmental studies Kyoto UniversityKyoto 606-8501Japan Kanagawa Environmental Research Center Kanagawa 254-0014Japan Center for Regional Environmental Research National Institute for Environmental StudiesIbaraki305-8506Japan

The heterogeneous loss of HO_(2)radicals onto ambient aerosols plays an important role in tropospheric ***,sparse investigation of the dominating parameters controlling the HO_(2)uptake coefficients onto ambient aerosols(γHO_(2))has largely hindered the application of the measuredγHO_(2)to the global spatial *** we induced an offine method using LFP-LIF technique to measure the kinetics of HO_(2)uptake onto ambient aerosols collected in summertime and wintertime in Yokohama city,a regional urban site near Tokyo,*** controlling the dominating parameters which infuenceγHO_(2),we were able to investigate the detailed HO_(2)uptake *** characterized the chemical composition of the collected ambient aerosols,including organics,inorganics,transition metals ions,*** modeledγHO_(2)using different *** show thatγHO_(2)increased with the increase in RH,and the aerosol states(“dry”or wet/aqueous)have large effects onγHO_(2).With fixed RH and aerosol chemical composition,γHO_(2)was highly dependent on pH and inversely correlated with[HO_(2)]_*** combing the measuredγHO_(2)values with the modeled ones,we found that both the HO_(2)self-reaction and transition metal-catalyzed reactions should be accounted for to yield a single parameterization to predictγHO_(2),and different chemical compositions may have collective effects onγHO_(2).Results may serve for extending theγHO_(2)values measured at one observation site to different environmental conditions,which will help us to achieve more accurate modeling results concerning secondary pollutant formation(i.e.,ozone).

关键词： HO_(2)uptake kinetics Offine method Impacting factors Mechanism

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Spatial continuous modeling of early Cenozoic carbon cycle and climate

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National Science Review 2024年第4期11卷 30-32页

作者： Yonggang Liu Jian Zhang Haoyue Zuo Zhilin He Jiaqi Guo Qifan Lin Haonan Yu Jiawenjing Lan Jing Han Zhihong Song Zihan Yin Liang Zhao Yongyun Hu Zhengtang Guo Laboratory for Climate and Ocean-Atmosphere studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

The partial pressure of atmospheric CO2（pCO2） is determined by the carbon cycle that involves climate, biogeochemistry, and plate tectonics. In this cycle,atmospheric CO2is converted into organic carbon and carbonates by biological activities and silicate weathering, and buried as sediments. The sediments on the ocean floor are subducted into the Earth’s interior, and subsequently converted back into CO2and outgassed into the atmosphere.

关键词： ATMOSPHERIC CO2

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