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

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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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evaluation of Water Losses by evaporation in the Nakanbe Basin

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Atmospheric and Climate Sciences 2024年第1期14卷 29-41页

作者： Bayala Alfred Kabre Sayouba Yonli Hamma Fabien Chesneau Xavier thierry Sikoudouin Maurice Ky Zeghmati Belkacem Kieno P. Florent Kam Sié unité de Formation et de Recherche en Sciences exactes et appliquées (UFR/SeA) Laboratoire d’Energies Thermiques Renouvelables (LETRE) Université Joseph KI-ZERBO Ouagadougou Burkina Faso unité de Formation et de recherche en Science exactes et appliquées Centre Universitaire de Kaya (CU-K) Perpignan France Laboratoire de Modélisation Pluridisciplinaire et Simulation Université de Perpignan Via Domitia Perpignan France unité de Formation et de Recherche en Sciences exactes et appliquées (UFR/SeA) Laboratoire de Matériaux et Environnement Uni-versité Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire de Physique et chimie de l’ environnement (LPCe) Université Joseph KI-ZERBO Ouagadougou Burkina Faso

A numerical approach to heat and mass transfer in a large water reservoir is presented. this water reservoir is likened to a parallelepiped reservoir whose vertical and lower walls are adiabatic and impermeable. the equations that govern natural convection in water are solved by the finite volume method and thomas’salgorithm. the adequacy between the velocity and pressure fields is ensured by the SIMPLe algorithm. We are going to evaluate the water losses by evaporation from three dams in the Nakanbé basin in Burkina Faso for a period of thirty years, that is to say from January 1, 1991, to March 15, 2020. the three dams have a rate of evaporation greater than 40% of the volume of water stored. Indeed the rate of evaporation in each dam increases with the water filling rate in the reservoir: we have observed the following results for each dam in the Nakanbé basin;for the date of 02/27/1988 to 03/13/2020., the Loumbila dam received a total volume of stored water of 22.02 Mm3 and 10.57 Mm3 as the total volume of water evaporated at the same date. At the Ouaga dam (2 + 3), it stored a water volume of 4.06 Mm3 and evaporated 2.03 Mm3 of its storage volume from 01/01/1988 to 05/07/2016. Finally, with regard to the Bagré dam, it stored 745.16 Mm3 of water and 365.13 Mm3 as the volume of water evaporated from 01/01/1993 to 03/31/2020.

关键词： Numerical Study evaporation Meteorological Data Natural Convection Basins Dams

Simulation and Performance Analysis of Six Types of Sun Tracker Approaches:A Comparative Analysis for Solar Concentrating Technology Application at Burkina Faso

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Journal of energy and Power engineering 2024年第1期18卷 1-8页

作者： Stanislas Sanfo Serge Dimitri Bazyomo Tizane Daho Abdoulaye Ouedraogo Laboratoire de Physique et de chimie de l’environnement(LPCe) Departement de PhysiqueUnitéde Formation et de Recherche en Sciences Exactes et AppliquéesUniversitéJoseph KI-ZERBOOuagadougouBP 7021Burkina Faso Laboratory of thermal and Renewable energies department of Physics Unit of Training and Research on Exact and Applied SciencesUniversity Joseph KI-ZERBOOuagadougouBP 7021Burkina Faso Laboratoire Recherche Développement(LAReD) Universitéde OuahigouyaBurkina Faso

Modelization equations of six approaches for tracking the sun are recalled and used to evaluate the constraints and performances to which they lead *** geographical study case is taken for the specific latitude of 12 North that is a good matching with the location of the country of Burkina *** decisive periods were locally established in order to consider the different travels of the sun on sky during one *** work presents some technical data which facilitates the choice of sun tracking approaches with concern of a concentrator limits such as its angle of acceptance,its motion control card interpolation model,or its minimum irradiation level for energy conversion effectiveness.

关键词： Solar radiation sun tracker Burkina Faso experimental data

Fluorophosphates and fluorosulfates cathode materials: Progress towards high energy density sodium-ion battery

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Nano Research 2024年第3期17卷 1427-1440页

作者： Mohammed Hadouchi Jingrong Hou Toshinari Koketsu Abdelilah Lahmar Jiwei Ma Laboratoire de chimie appliquée des Matériaux Centre des Sciences des MatériauxFaculty of ScienceMohammed V University in RabatAvenue Ibn BattoutaBP 1014RabatMorocco Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804China Battery Materials development Section Business Creation Sector R&D CenterMitsui Mining&Smelting Co.Ltd.362-0021 SaitamaJapan Laboratoiry of Condensed Matter Physics University of Picardie Jules Verne33 Rue Saint-Leu 80039AmiensFrance

the rapid diffusion of renewable energy boosts the wide deployment of large-scale energy storage *** the low cost and high crustal abundance,sodium-ion battery(SIB)technology is expected to become a dominant technology in that area in the *** the practical application,novel cathode materials are urged to develop that show high energy density without sacrificing their cost and benignity to the *** the years of many studies,this still remains a huge challenge to battery *** this review,we discuss recent breakthroughs in SIB cathode materials with high energy density,namely fluorphosphates and *** design of materials,the crystal structure,the electrochemical performance,and the underlaying intercalation mechanism are systematically *** strategies and research directions are also provided to advance future high-energy,low-cost,and ecofriendly cathode materials for next generation SIB.

关键词： fluorophosphates fluorosulfates crystal structure intercalation mechanism high energy density sodium-ion battery

experimental Study of the Anti-Corrosion Performance of Montmorillonite K-10 on Rebar in HCl environment: Application in Mortar for the Rehabilitation of Reinforced Concrete degraded by Corrosion

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Open Journal of Civil engineering 2024年第2期14卷 155-167页

作者： Malang Bodian Mariétou Barro Diop-Fall Dame Keinde el-Hadji Dieye Modou Gningue Diop Modou Fall Laboratoire de chimie Physique Organique et dAnalyse environnementales (LCPOAe) Dpartement de Chimie Univ Cheikh Anta Diop de Dakar Dakar Senegal Laboratoire de Matriaux de Gnie Civil (LMGC) Ecole Suprieure Polytechnique de Dakar Univ Cheikh Anta Diop Dakar Sngal

this work first investigates the corrosion-inhibiting behavior of montmorillonite K-10 on reinforcing steel. the corrosion-inhibiting power of the clay (Montmorillonite) is determined in a medium HCl (C = 1N) using free corrosion potential monitoring, Tafel potentiodynamic polarization curves and electrochemical impedance spectroscopy. the results of this study showed a satisfactory corrosion-inhibiting efficiency of around 72.665% for the optimum content of 1%. this is due to the presence of a stable oxide layer that protects the metal against corrosion. To validate the concept of montmorillonite as a corrosion inhibitor in repair mortar, we now turn to the influence of montmorillonite on the mechanical properties of mortars in the hardened state. In this part, montmorillonite K-10 is added to the mortar by partial substitution of the cement by 5% and 10% of the cement mass. the aim of this study is to ensure that the addition of this clay to the mortar composition will not have a negative effect on its compressive and flexural strengths. the results of the compression and flexural tests showed that the presence of montmorillonite in the mortar improved flexural and compressive strengths for the different compositions studied.

关键词： Clay Reinforced Concrete Corrosion Inhibitor Rehabilitation electrochemical Methods

Phytochemical Screening and Assays of Phenolic Compounds in Senna occidentalis L. Leaf and Seed extracts

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Food and Nutrition Sciences 2024年第7期15卷 499-508页

作者： edmond Antoine Badock Lahat Niang Abdoulaye Dramé Célestine Nkounkou-Loumpangou Omar Touré Omar Sokhna Nicolas Cyrille Ayessou Mady Cissé ecole Suprieure Polytechnique Laboratoire Eau Energie Environnement et Procds Industriels (LE3PI) Universit Cheikh Anta Diop Dakar Sngal ecole Suprieure Polytechnique Centre dEtudes sur la Scurit Alimentaire et les Molcules Fonctionnelles (CESAM-RESCIF) Universit Cheikh Anta Diop Dakar Sngal Laboratoire de Valorisation des Produits de la Biomasse Dpartement de Chimie Universit Cheikh Anta Diop de Dakar Dakar Sngal unit de chimie du Vgtal et de la Vie Facult des Sciences et Techniques Universit Marien NGOUABI Brazzaville Republic of the Congo Laboratoire de chimie Organique et Bio-Organique Dpartement de Chimie Facult des Sciences et Techniques/UCAD Universit Cheikh Anta Diop Dakar Sngal

Phytochemical screening and assay of secondary metabolites, crude extracts with distilled water, aqueous methanol, aqueous acetone and aqueous ethanol of leaves and seeds of Senna occidentalis L. were studied in this work. the aim was to verify the distribution of secondary metabolites according to S. occidentalis organs. Four leaf samples from four different localities (South, east, West and Central Senegal) and a mixed sample of seeds were used. Functional molecules such as polyphenols, flavonoids and tannins were then assessed in the leaves and seeds using various standard methods. the results show that Senna occidentalis L. leaf and seed samples display an identical and homogeneous profile, regardless of locality. they contain secondary metabolites and the polyphenol content of extracts from southern, eastern, western and central leaves is: 0.620 - 0.539 - 0.811 - 0.573 g GAe/100 g DM;flavonoids: 0.064 - 0.074 - 0.130 - 0.101 g Ce/100 g DM and tannins: 0.326 - 0.264 - 0.269 - 0.494 g TAe/100 g DM. the efficacy of S. occidentalis L. infusions in therapy is thus justified by the presence of these metabolites, whose biological properties are well known. It is then possible to explore isolation of active principles of Senna occidentalis L. leaves and even seeds for producing medicines.

关键词： Senna occidentalis L. Total Polyphenols Flavonoids Tannins

One-step controlled electrodeposition nickel sulfides heterointerfaces favoring the desorption of hydroxyl groups for efficient hydrogen generation

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Rare Metals 2024年第9期43卷 4377-4386页

作者： Ru-Chun Li Xin-Yue Zhang Ze-Yue Qu Feng-Yi Liu Quan-Qing Xu Zhao-Xia Hu Jing-Wei Li Mohamed-Nawfal Ghazzal Jin-Li Yu Faculty of Chemistry and Chemical engineering Yunnan Normal University Foshan Gaoke Hechuang Technology Co. Ltd. School of Chemistry and Chemical engineering Guangzhou University Universite′Paris-Saclay UMR 8000 CNRSInstitut de Chimie Physique department of Chemistry City University of Hong Kong

the heterointerface engineering involving different components or phases represents a desirable strategy for enhancing the sluggish kinetics of hydrogen evolution reaction （HeR）.However,constructing desired heterointerfaces and elucidating the reaction mechanisms on the interface remains a considerable *** this work,we propose a straightforward electrochemical synthesis strategy to prepare the nickel sulfide-based heterointerfaces for *** mechanism of electrochemical synthesis is revealed,wherein metal-thiourea species can be formed at the cathode potential and subsequently oxidized to nickel sulfides at the anode *** this mechanism,a range of nickel sulfides,including NiS,Ni3S2/NiS,Ni/Ni3S2and Ni3S2,have been successfully synthesized by tuning the potential range of cyclic *** these,the obtained Ni3S2/NiS@CC（CC:carbon cloth） exhibits the smallest overpotential of84 mV at 10 mA·cm-2and high *** calculations further reveal that the combination of NiS and Ni3S2induces electron redistribution at the interface,and thus the Volmer process is effectively promoted with faster water dissociation and OH desorption ***,the simplicity method coupled with a clear synthesis mechanism and outstanding HeR performance highlights its promising potential for practical applications.

关键词： electrochemical synthesis Heterointerfaces Hydrogen evolution reaction OH desorption kinetics

Application of in-situ characterization techniques in modern aqueous batteries

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Rare Metals 2024年第8期43卷 3553-3575页

作者： Jia-Hao Wu Hong-Wei Cai Zhao-Hui deng Jean-Jacques Gaumet Yu Bao Wen Luo department of Physics State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Laboratoire de chimie et Physique:Approche Multi-echelles Des Milieux Complexes(LCP-A2MC)Institut Jean BarriolUniversitéde Lorraine57070MetzFrance department of Medicinal Chemistry Hubei College of Chinese MedicineJingzhou 434020China

the development of high-performance aqueous batteries calls for an in-depth knowledge of their chargedischarge redox and failure mechanism,as well as a systematic understanding of the dynamic evolution of microstructure,phase composition,chemical composition,and local chemical environment of the materials for ***-situ characterization technology is expected to understand and reveal the problems faced by aqueous rechargeable batteries,such as the dissolution of electrode materials,the growth of metal negative electrode dendrites,passivation,corrosion,side reactions and a series of *** on this,typical in-situ characterization techniques and their basic mechanisms are summarized,including in-situ optical visualization,in-situ microscopy techniques(in-situ scanning electron microscopy(SeM),in-situ transmission electron microscopy(TeM)),in-situ X-ray techniques(in-situ X-ray diffraction(XRD),in-situ X-ray photoelectron spectroscopy(XPS),in-situ near-edge structural X-ray absorption spectroscopy(XANeS)),and in-situ spectroscopy techniques(in-situ Raman spectroscopy,in-situ Fourier transform infrared(FTIR)).Moreover,some emerging techniques concerning aqueous battery research,especially gas evolution and materials dissolution issues,such as in-situ electrochemical quartz crystal microbalance(eQCM).in-situ fiber-optic sensing,in-situ gas chromatography(GC) are *** last,the applications of advanced in-situ characterizations in future research of aqueous batteries are emphasized and discussed,along with some of the remaining challenges and possible solutions.

关键词： Aqueous battery In-situ characterization Phase transformation Solid electrolyte interphase Zinc dendrite growth

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Mitochondria-targeted atovaquone promotes anti-lung cancer immunity by reshaping tumor microenvironment and enhancing energy metabolism of anti-tumor immune cells

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Cancer Communications 2024年第3期44卷 448-452页

作者： Donghai Xiong Zheng Yin Mofei Huang Yian Wang Micael Hardy Balaraman Kalyanaraman Stephen T Wong Ming You Center for Cancer Prevention Houston Methodist Neal Cancer CenterHouston Methodist HospitalWeill Cornell MedicineHoustonTexasUSA department of Systems Medicine and Bioengineering Houston Methodist Cancer CenterHouston Methodist HospitalWeill Cornell MedicineHoustonTexasUSA Aix Marseille Univ Centre Nationaldela Recherche Scientifique(CNRS)Institut de Chimie Radicalaire(ICR)UnitéMixte de Recherche(UMR)7273MarseilleFrance department of Biophysics Medical College of WisconsinMilwaukeeWisconsinUSA

dear editor,Atovaquone(ATO),a mitochondrial inhibitor,has anti-cancer effects[1].Based on ATO,we developed mitochondria-targeted atovaquone(Mito-ATO)that had even stronger anti-tumor efficacy than ATO[2].We syn-thesized Mito-ATO by attaching the bulky triphenylphos-phonium(TPP)group to ATO via a ten-carbon alkyl chain(Supplementary file of methods;Supplementary Figure S1).

关键词： metabolism immunity targeted