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A study on wildfire impacts on greenhouse gas emissions and regional air quality in South of Orléans,France

Journal of Environmental Sciences 2024年第1期135卷 521-533页

作者： Chaoyang Xue Gisèle Krysztofiak Yangang Ren Min Cai Patrick Mercier Frédéric Le Fur Corinne Robin Benoit Grosselin véronique daele Max RMcGillen Yujing Mu valéry Catoire Abdelwahid Mellouki Laboratoire de Physique et Chimie de l’Environnement et de l’Espace(LPC2E) CNRS–UniversitéOrléans–CNES(UMR 7328)Orléans Cedex 245071France Institut de Combustion AérothermiqueRéactivitéEnvironnement(ICARE)CNRSOrléans Cedex 245071France Research Centre for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Lig’Air-Association de surveillance de la qualitéde l’air en région Centre-val de Loire Saint-Cyr-en-Val 45590France Mohammed v University RabatMorocco

Wildfire events are increasing globally which may be partly associated with climate change,resulting in significant adverse impacts on local,regional air quality and global *** September 2020,a small wildfire(burned area:36.3 ha)event occurred in Souesmes(Loiret-Cher,Sologne,France),and its plume spread out over 200 km on the following day as observed by the MOdIS *** on measurements at a suburban site(~50 km northwest of the fire location)in Orléans and backward trajectory analysis,young wildfire plumes were *** increases in gaseous pollutants(CO,CH_(4),N_(2)O,vOCs,etc.)and particles(including black carbon)were found within the wildfire plumes,leading to a reduced air *** factors,defined as EF(X)=ΔX/ΔCO(where,X represents the target species),of various trace gases and black carbon within the young wildfire plumes were determined accordingly and compared with previous *** in the ambient ions(such as ammonium,sulfate,nitrate,chloride,and nitrite in the particle-and gasphase)and aerosol properties(e.g.,aerosol water content,aerosol p H)were also quantified and ***,we estimated the total carbon and climate-related species(e.g.,CO_(2),CH_(4),N_(2)O,and BC)emissions and compared them with fire emission *** biomass burning emission inventories have uncertainties in estimating small fire burned areas and *** instance,we found that the Global Fire Assimilation System(GFAS)may underestimate emissions(e.g.,CO)of this small wildfire while other inventories(GFEd and FINN)showed significant *** that it is the first time to record wildfire plumes in this region,related atmospheric implications are presented and discussed.

关键词： Wildfire Air quality Emission factor Emission inventory vOLTAIRE supersite

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Electrostatic Interaction-directed Construction of Hierarchical Nanostructured Carbon Composite with dual Electrical Conductive Networks for Zinc-ion Hybrid Capacitors with Ultrastability

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Energy & Environmental Materials 2024年第1期7卷 188-196页

作者： Changyu Leng Zongbin Zhao Xuzhen Wang Yuliya v.Fedoseeva Lyubov G.Bulusheva Alexander v.Okotrub Jian Xiao Jieshan Qiu State Key Lab of Fine Chemicals School of Chemical Engineering Liaoning Key Lab for Energy Materials and Chemical Engineering Dalian University of Technology Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences College of Chemical Engineering Beijing University of Chemical Technology

Metal-organic framework(MOF)-derived carbon composites have been considered as the promising materials for energy ***,the construction of MOF-based composites with highly controllable mode via the liquid-liquid synthesis method has a great challenge because of the simultaneous heterogeneous nucleation on substrates and the self-nucleation of individual MOF nanocrystals in the liquid phase.

关键词： carbon composite electrostatic interaction metal–organic framework coating self-assembly zinc-ion hybrid capacitor

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Investigation of crack segmentation and fast evaluation of crack propagation, based on deep learning

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 516-535页

作者： Than v.TRAN H.NGUYEN-XUAN Xiaoying ZHUANG Institute of Photonics Leibniz University HannoverHannover 30167Germany CIRTech Institute HUTECH UniversityHo Chi Minh City 700000Vietnam College of Civil Engineering Tongji UniversityShanghai 200092China

Identifying crack and predicting crack propagation are critical processes for the risk assessment of engineering *** traditional approaches to crack modeling are faced with issues of high computational costs and excessive computing *** address this issue,we explore the potential of deep learning(dL)to increase the efficiency of crack detection and forecasting crack ***,there is no single algorithm that can fit all data sets well or can apply in all cases since specific tasks *** the paper,we present dL models for identifying cracks,especially on concrete surface images,and for predicting crack ***,SegNet and U-Net networks are used to identify concrete *** gradient descent(SGd)and adaptive moment estimation(Adam)algorithms are applied to minimize loss function during ***,time series algorithms including gated recurrent unit(GRU)and long short-term memory(LSTM)are used to predict crack *** experimental findings indicate that the U-Net is more robust and efficient than the SegNet for identifying crack segmentation and achieves the most outstanding *** evaluation of crack propagation,GRU and LSTM are used as dL models and results show good agreement with the experimental data.

关键词： deep learning crack segmentation crack propagation encoder−decoder recurrent neural network

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Energy-efficient joint UAv secure communication and 3d trajectory optimization assisted by reconfigurable intelligent surfaces in the presence of eavesdroppers

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defence Technology（防务技术） 2024年第1期31卷 537-543页

作者： Huang Hailong Mohsen Eskandari Andrey v.Savkin Wei Ni The department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Electrical Engineering and Telecommunications University of New South WalesSydney2052Australia data61 CSIROAustralia

We consider a scenario where an unmanned aerial vehicle(UAv),a typical unmanned aerial system(UAS),transmits confidential data to a moving ground target in the presence of multiple *** friendly reconfigurable intelligent surfaces(RISs) help to secure the UAv-target communication and improve the energy efficiency of the *** formulate an optimization problem to minimize the energy consumption of the UAv,subject to the mobility constraint of the UAv and that the achievable secrecy rate at the target is over a given *** present an online planning method following the framework of model predictive control(MPC) to jointly optimize the motion of the UAv and the configurations of the *** effectiveness of the proposed method is validated via computer simulations.

关键词： Unmanned aerial systems(UASs) Unmanned aerial vehicle(UAv) Communication security Eaves-dropping Reconfigurable intelligent surfaces(RIS) Autonomous navigation and placement Path planning Model predictive control

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Emission colour tuning in KLnF_(4):Yb^(3+),Er^(3+)/Ho^(3+)phosphor

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Journal of Rare Earths 2024年第1期42卷 57-65,I0002页

作者： Janani K Gayathri E vijayatha v Ramasubramanian S Thiyagarajan P department of Science and Humanities Nehru Institute of TechnologyKaliapuramThirumalayampalayamCoimbatoreIndia department of Sciences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatoreIndia department of Physics Anna UniversityChennaiIndia

KLnF_(4):Yb^(3+),Er^(3+)/Ho^(3+)(Ln=Y,Yb,Gd)phosphors were prepared by solid-state reaction *** each of the Yb^(3+)/Er^(3+)and Yb^(3+)/Ho^(3+)co-doped phosphors independently,phase confirmation and morphological examination were accomplished using the X-ray diffraction technique and scanning electron microscope analysis.X-ray photoelectron spectroscopy analysis shows the charge state and existence of lanthanides and *** luminescence emissions of green and red colour were detected for the synthesized *** changes in the upconverted emission intensities and colour output pertaining to the change of the lanthanide host matrix along with dopants were investigated for the prepared *** the upconversion luminescence,erbium-doped samples exhibit a predominance of red emission while holmium-doped samples display a prevalence of green *** rare-earth Er/Ho doped KYbF4shows strong red emission compared to other ***_(4):Yb,Er/Ho exhibits relatively significant green upconve rsion emissions,while Yb,Er-doped KGdF_(4)host displays a 10-fold increase in green/red emission ratio with an increase in the input power of 20-780 *** photoluminescence studies and decay curve analysis were carried out using Uv light excitation for the developed phosphors.A higher lifetime of 2.2 ms was measured for the downshifting red emission in the Ho doped KYbF_(4)*** study suggests a potential for colour tunability in the upconversion and downshifting emissions through host modifications to the fluoride phosphor.

关键词： Rare earths Energy transfer upconversion downshifting Colour coordinates

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Outcomes of long-acting injectable antipsychotics use in pregnancy:A literature review

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World Journal of Psychiatry 2024年第4期14卷 582-599页

作者： Ana v Pejčić Srdjan M Stefanović MilošN Milosavljević vladimir S Janjić Marko M Folić Nevena d Folić Jovana Z Milosavljević department of Pharmacology and Toxicology Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of Pharmacy Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of Clinical Pharmacology University Clinical Center KragujevacKragujevac 34000Serbia department of Psychiatry Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia Clinic for Psychiatry University Clinical Center KragujevacKragujevac 34000Serbia Center for Pharmaceutical and Pharmacological Research Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia department of Pediatrics Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia Pediatric Clinic University Clinical Center KragujevacKragujevac 34000Serbia department of Anatomy Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia

BACKGROUNd Women with a history of serious psychotic disorders are at increased risk of disease relapse during ***-acting injectable(LAI)antipsychotics have been widely used to improve adherence and prevent relapse in patients with various severe psychotic disorders,but there is a lack of high-quality data from previous research on the safety of LAI antipsychotics during *** To summarize relevant data on maternal,pregnancy,neonatal,and developmental outcomes from published cases of LAI antipsychotic use in *** A literature search was performed through November 11,2023,using three online databases:PubMed/MEdLINE,Scopus,and Web of *** reports or case series that reported information about the outcomes of pregnancy in women who used LAI antipsychotics at any point in pregnancy,with available full texts,were *** statistics,narrative summation,and tabulation of the extracted data were *** A total of 19 publications satisfied the inclusion criteria:3 case series,15 case reports,and 1 conference *** reported the outcomes of LAI antipsychotic use in 74 women and 77 *** use of secondgeneration LAI antipsychotics was reported in the majority(n=47;61.0%)of ***-generation LAI antipsychotics were administered during 30 pregnancies(39.0%).Most of the women(approximately 64%)had either satisfactory control of symptoms or no information about relapse,while approximately 12%of them had developed gestational diabetes mellitus.A minority of cases reported adverse outcomes such as stillbirth,spontaneous abortion,preterm birth,low birth weight,congenital anomalies,and neurological manifestations in ***,there were no reports of negative long-term developmental *** Currently available data seem reassuring,but further well-designed studies are required to properly evaluate the risks and benefits of LAI antipsychotic use during pregnancy.

关键词： Antipsychotic agents Long-acting injectable Pregnancy Outcome Review

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Snapshot imaging of ultrashort electron bunches

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Light(Science & Applications) 2024年第7期13卷 1226-1228页

作者： Andreas döpp Ludwig-Maximilian-Universität München Am Coulombwall 185748GarchingGermany Max Planck Institut für Quantenoptik Hans-Kopfermann-Strasse 1Garching85748Germany

New measurements combine spatial and temporal information from optical transition radiation to estimate the three-dimensional structure of electron bunches from a laser wakefield accelerator.

关键词： ultrashort Snapshot electron

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Electric tuning of plasmonic resonances in ultrathin gold nanoribbon arrays

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Photonics Research 2024年第08期12卷 1750-1759页

作者： ZHENXIN WANG ALEXEY v.KRASAvIN CHENXINYU PAN JUNSHENG ZHENG ZHIYONG LI XIN GUO ANATOLY v.ZAYATS LIMIN TONG PAN WANG State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and Engineering Zhejiang University department of Physics and London Centre for Nanotechnology King's College London Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging Intelligent Optics & Photonics Research Center Jiaxing Research Institute Zhejiang University

Ultrathin plasmonic nanostructures offer an unparalleled opportunity for the study of light–matter interactions at the nanoscale and realization of compact nanophotonic devices. In this study, we introduce an ultrathin gold nanoribbon array and demonstrate an electric approach to actively tuning its plasmonic resonance, which leveraging the extreme light confinement capability in the ultrathin plasmonic nanostructure and a robust nanoscale electro-optical effect in indium tin oxide. Optimizing the design(to a total thickness as small as 12 nm for a 2-nmthick gold nanoribbon array), we numerically demonstrate a spectral shift in the plasmonic resonance up to 36 nm along with an approximately 16% change in the transmission at a gate voltage below 1.7 v at the wavelength of1.47 μm. This work presents progress towards electric tuning of plasmonic resonances in ultrathin metallic nanostructures for various applications including surface-enhanced spectroscopy, spontaneous emission enhancement,and optical modulation.

关键词： Chemical sensors diffraction limit Electrooptical effects Indium tin oxide Light matter interactions Nanostructures

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A Key Ingredient for a Happy Workforce You can make a positive difference in the world

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空中英语教室（高级版．彭蒙惠英语） 2024年第10期 34-35,50页

作者： Hilary smith 不详

A ccording to the Gallup World Poll for the World Happiness Report 2024,America has fallen out of the top 2o happiest countries for the first *** is not surprising considering the rising costs of living,a daily barrage of unsettling news reports and the lingering effects of loneliness from the *** media has replaced much-needed in-person interactions and often creates a feeling of missing ***,while most of corporate America has returned to the office,we still find ourselves spending a disproportionate amount of time at our desks on Zoom calls,as opposed to gathering in a conference room.

关键词： gathering settling Work

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CoopAI-Route: dRL Empowered Multi-Agent Cooperative System for Efficient QoS-Aware Routing for Network Slicing in Multi-domain SdN

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2449-2486页

作者： Meignanamoorthi dhandapani v.vetriselvi R.Aishwarya College of Engineering Guindy Anna UniversityChennai600025India

The emergence of beyond 5G networks has the potential for seamless and intelligent connectivity on a global *** slicing is crucial in delivering services for different,demanding vertical applications in this ***-generation applications have time-sensitive requirements and depend on the most efficient routing path to ensure packets reach their intended ***,the existing IP(Internet Protocol)over a multi-domain network faces challenges in enforcing network slicing due to minimal collaboration and information sharing among network *** inter-domain routing methods,like Border Gateway Protocol(BGP),cannot make routing decisions based on performance,which frequently results in traffic flowing across congested paths that are never *** address these issues,we propose CoopAI-Route,a multi-agent cooperative deep reinforcement learning(dRL)system utilizing hierarchical software-defined networks(SdN).This framework enforces network slicing in multi-domain networks and cooperative communication with various administrators to find performance-based routes in intra-and ***-Route employs the distributed Global Topology(dGT)algorithm to define inter-domain Quality of Service(QoS)***-Route uses a dRL agent with a message-passing multi-agent Twin-delayed deep deterministic Policy Gradient method to ensure optimal end-to-end routes adapted to the specific requirements of network slicing *** evaluation demonstrates CoopAI-Route’s commendable performance in scalability,link failure handling,and adaptability to evolving topologies compared to state-of-the-art methods.

关键词： 6G multi-domain multi-agent routing dRL SdN

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