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Implementation of a double trigger condition system based on charge comparison and TOF measurement for the NEDA detector array

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Nuclear Science and Techniques 2025年第2期36卷 40-48页

作者： J.M.Deltoro A.Goasduff F.J.Egea V.González A.Gadea R.M.Pérez-Vidal I.Lazarus M.Kogimtzis L.McNicholl M.Palacz G.Jaworski J.J.Valiente-Dobón J.Nyberg S.Casans A.E.Navarro-Antón E.Sanchis A.Boujrad E.Clément T.Hüyük R.Illicachi O.Stezowski V.Modamio Department of Electronic Engineering University of ValenciaBurjassotValenciaSpain Istituto Nazionale di Fisica Nucleare Laboratori Nazionali di LegnaroLaboratori Nazionali di LegnaroLegnaroPadovaItaly Instituto de Física Corpuscular CSIC-Universidad de ValenciaCSIC-Universidad de Valencia46980 PaternaValenciaSpain Science and Technology Facilities Council DaresburyUK Heavy Ion Laboratory University of Warsaw02-093 WarsawPoland Department of Physics and Astronomy Uppsala UniversityUppsalaSweden Grand Accélérateur National d’Ions Lourds(GANIL) CEA/DRF-CNRS/IN2P3CEA/DRF-CNRS/IN2P3CaenFrance Universitéde Lyon UniversitéLyon-1CNRS/IN2P3UMR5822IP2IIP2I4 Rue Enrico Fermi69622 Villeurbanne CedexFrance Department of Physics University of Oslo0316 OsloNorway

The NEutron Detector Array(NEDA)is designed to be coupled to gamma-ray spectrometers to enhance the sensitivity of the setup by enabling reaction channel selection through counting of the evaporated *** article presents the implementation of a double trigger condition system for NEDA,which improves the acquisition of neutrons and reduces the number of gamma rays *** independent triggers are generated in the double trigger condition system:one based on charge comparison(CC)and the other on time-of-flight(TOF).These triggers can be combined using OR and AND logic,offering four distinct trigger *** developed firmware is added to the previous one in the Virtex 6 field programmable gate array(FPGA)present in the system,which also includes signal processing,baseline correction,and various trigger logic *** performance of the trigger system is evaluated using data from the E703 experiment performed at *** four trigger modes are applied to the same data,and a subsequent offline analysis is *** is shown that most of the detected neutrons are preserved with the AND mode,and the total number of gamma rays is significantly *** with the CC trigger mode,the OR trigger mode allows increasing the selection of *** addition,it is demonstrated that if the OR mode is selected,the online CC trigger threshold can be raised without losing neutrons.

关键词： Neutron detector Neutron-gamma discrimination Pulse shape analysis Time-of-flight Charge comparison

Central role of altered phosphodiesterase 2-dependent signaling in the pathophysiology of cognition-based brain disorders

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Neural Regeneration Research 2025年第8期20卷 2302-2303页

作者： Asma Boulksibat Alessandra Tempio Barbara Bardoni Institut de Pharmacologie Moléculaire et Cellulaire CNRS UMR7275Inserm U1323ValbonneFrance

The second messengers 3',5'-cyclic adenosine monophosphate(cAMP)and 3',5'-cyclic guanosine monophosphate(cGMP)modulate molecular pathways that are involved in a large variety of cellular *** the brain,these processes include neurogenesis,neuronal differentiation,activation and function of microglia,and synaptic plasticity,finally resulting in memory formation.

关键词： formation processes finally

Feature selection strategy optimization for lithium-ion battery state of health estimation under impedance uncertainties

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Journal of Energy Chemistry 2025年第2期101卷 87-98页

作者： Xinghao Du Jinhao Meng Yassine Amirat Fei Gao Mohamed Benbouzid UMR cnrs 6027 IRDL University of Brest School of Electrical Engineering Xi'an Jiaotong University LbISEN ISEN Yncréa Ouest School of Energy and Computer Science University of Technology of Belfort-Montbeliard

Battery health evaluation and management are vital for the long-term reliability and optimal performance of lithium-ion batteries in electric *** impedance spectroscopy(EIS) offers valuable insights into battery degradation analysis and ***,previous studies have not adequately addressed the impedance uncertainties,particularly during battery operating conditions,which can substantially impact the robustness and accuracy of state of health(SOH) *** by this,this paper proposes a comprehensive feature optimization scheme that integrates impedance validity assessment with correlation *** utilizing metrics such as impedance residuals and correlation coefficients,the proposed method effectively filters out invalid and insignificant impedance data,thereby enhancing the reliability of the input ***,the extreme gradient boosting(XGBoost) modeling framework is constructed for estimating the battery degradation *** XGBoost model incorporates a diverse range of hyperparameters,optimized by a genetic algorithm to improve its adaptability and generalization *** validation confirms the effectiveness of the proposed feature optimization scheme,demonstrating the superior estimation performance of the proposed method in comparison with four baseline techniques.

关键词： Lithium-ion battery State of health Electrochemical impedance spectroscopy Extreme gradient boosting

The Potential of Wacapou (Vouacapoua americana) Extracts to Develop New Biobased Protective Solutions for Low-Durability Wood Species

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Journal of Renewable Materials 2025年第1期13卷 79-100页

作者： Emma Kieny Kévin Candelier Louis Milhe Yannick Estevez Cyrielle Sophie Romain Lehnebach Jérémie Damay Daniela Florez Emeline Houël Marie-France Thévenon Julie Bossu CIRAD Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCNRSINRAEUniversitéde GuyaneKourou97379France CIRAD UPR BioWooEBMontpellierF-34398France BioWooEB Universitéde MontpellierCIRADMontpellierF-34398France cnrs Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCIRADINRAEUniversitéde GuyaneKourouGuyane Française97379France Sorbonne Université CNRSLaboratoire de Biodiversitéet Biotechnologies MicrobiennesLBBMObservatoire OcéanologiqueBanyuls-sur-Mer66650France

The valorization of Amazonian wood residues into active chemical compounds could be an eco-friendly,cost-effective and valuable way to develop wood preservative formulations to enhance the decay and termite resistance of low-durable wood ***(Vouacapoua americana.,Fabaceae)is a well-known Guianese wood spe-cies commonly used in local wood construction due to its outstanding natural durability,which results from the presence of a large panel of extractives *** addition,its industrial processing generates large amounts of *** residues were extracted by maceration using four different solvents(water/ethanol,ethyl acetate,hexane and dichloromethane/methanol),separately and *** yield of each extractive fraction was determined,and their chemical compositions were analyzed by Liquid Chromatography-Mass Spectrometry(LC-MS).Ethyl acetate led to the highest extraction yield,and the active compounds were identiﬁed in the obtained extractive *** this sense,the fungicidal and termite-repellent properties of these extractives were then tested using a screening laboratory(with temperate and tropical microorganisms),according to the solution concentration(1%,2.5%,5%,8%and 10%).Finally,Virola michelii Heckel wood samples(low durable species)were impregnated with the 8%concentration *** impregnated wood samples were then exposed to a soil bed *** results highlighted that the nature of the solvent used during wood maceration affects the con-tent of the obtained extractive ***-Performance Liquid Chromatography–High-Resolution Mass Spectrometry(UHPLC-HRMS)analyses showed the inﬂuence of extraction parameters on the nature of the extracted *** extracts(from ethyl acetate maceration)showed good anti-fungal and anti-termite ***,the concentration in extractives had an impact on the anti-termite activity level for Reti-culitermesﬂavipes and Cryptotermes *** based on W

关键词： Anti-fungal and anti-termite activities conferred durability extractives French Guiana impregnation guianese species wood by-products

Strong resistance toβ-cyfluthrin in a strain of the beetle Alphitobius diaperinus:a de novo transcriptome analysis

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Insect Science 2025年第1期32卷 209-226页

作者： Gwenola Gouesbet David Renault Stéphane APDerocles HervéColinet cnrs ECOBIO(EcosystèmesBiodiversitéÉvolution)—UMR 6553University of RennesRennesFrance Institut Universitaire de France 1 rue DescartesCEDEX 05ParisFrance

The lesser mealworm,Alphitobius diaperinus,is an invasive tenebrionid beetle and a vector of *** to the emergence of insecticide resistance and consequent outbreaks that generate significant phytosanitary and energy costs for poultry farmers,it has become a major insect pest *** better understand the molecular mechanisms behind this resistance,we studied a strain of *** from a poultry house in Brittany that was found to be highly resistant to theβ-*** strain survivedβ-cyfluthrin exposures corresponding to more than 100 times the recommended *** used a comparative de novo RNA-Seq approach to explore genes expression in resistant versus sensitive *** de novo transcriptomic analyses showed that responses toβ-cyfluthrin likely involved a whole set of resistance *** related to detoxification,metabolic resistance,cuticular hydrocarbon biosynthesis and proteolysis were found to be constitutively overexpressed in the resistant compared to the sensitive ***-up enzymatic assays confirmed that the resistant strain exhibited high basal activities for detoxification enzymes such as cytochrome P450 monooxygenase and *** in-depth analysis of differentially expressed genes suggests the involvement of complex regulation of signaling *** knowledge of these resistance mechanisms is essential for the establishment of effective pest control.

关键词： Alphitobius diaperinus de novo transcriptome insecticide resistance P450 xenobiotic metabolism

A weak formulation of heterogenous viscoacoustic wave propagation in infinite domain

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 31-51页

作者： Xie Zhinan Zheng Yonglu Paul Cristini Alexis Bottero Shan Zhendong Lu Jianqi Zhang Xubin Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake AdministrationKey Laboratory of Earthquake Disaster MitigationMinistry of Emergency ManagementHarbin 150080China Laboratoire de Mecanique et d’Acoustique du cnrs Aix Marseille Univ.CNRSMarseille F-13353France Marine Physical Laboratory Scripps Institution of OceanographyUniversity of CaliforniaSan Diego 92093USA

The accurate simulation of wave propagation in real media requires properly taking the attenuation into account,which leads to wave dissipation together with its causal companion,wave *** this study,to obtain a weak formulation of heterogenous viscoacoustic wave propagation in an infinite domain,the viscoacoustic medium is first characterized by its frequency-dependent complex bulk compliance instead of the classically used complex bulk ***,a mechanical model using serially connected standard linear solids(SSLS)is built to obtain the rational approximation of the complex bulk compliance whose parameters are calculated via an adapted nonlinear optimization *** the obtained bulk compliance-based constitutive relation,a novel second-order viscoacoustic wave equation in the frequency domain is derived,of which the weak formulation can be physically explained as the virtual work equation and can thus be discretized using a continuous spectral element method in ***,a new method is introduced to address the convolution terms involved in the inverse Fourier transform,whose accurate time integration can then be achieved using an explicit time scheme,which avoids the transient growth that exists in the classical *** resulting full time-space decoupling scheme can handle wave propagation in arbitrary heterogeneous ***,to treat the wave propagation in an infinite domain,a perfectly matched layer in weak formulation is derived for the truncation of the infinite domain via complex coordinate stretching of the virtual work *** only minor modification,the resulting perfectly matched layer can be implemented using the same time scheme as for the wave equation inside the truncated *** accuracy,numerical stability,and versatility of the new proposed scheme are demonstrated with numerical examples.

关键词： viscoacoustic wave standard linear solid complex bulk compliance heterogenous media perfectly matched layer Legendre spectral element method

Plasmonics of regular shape particles,a simple group theory approach

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Nano Research 2020年第6期13卷 1597-1603页

作者： Sarra Mitiche Sylvie Marguet Fabrice Charra Ludovic Douillard Université Paris-Saclay CEACNRSSPECF-91191Gif sur YvetteFrance Université Paris-Saclay CEACNRSNIMBEF-91191Gif sur YvetteFrance

A simple hand calculation method based on group theory is proposed to predict the near field maps of finite metallic nanoparticles(MNP)of canonical geometries:prism,cube,hexagon,disk,sphere,*** to low order localized surface plasmon resonance *** this article,we report the principles of the group theory approach and demonstrate,through several examples,the general character of the group theory method which can be applied to describe the plasmonic response of particles of finite or infinite symmetry point *** validation is achieved by collection of high-resolution subwavelength near-field maps by photoemission electron microscopy(PEEM)on a representative set of Au colloidal particles exhibiting either finite(hexagon)or infinite(disk,sphere)symmetry point groups.

关键词： surface plasmon resonance group theory hexagon disk sphere photoemission electron microscopy(PEEM)

Electrochemical reactivity of In-Pb solid solution as a negative electrode for rechargeable Mg-ion batteries

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Journal of Energy Chemistry 2021年第4期30卷 124-128页

作者： Lucie Blondeau Suzy Surble Eddy Foy Hicham Khodja Magali Gauthier UniversitéParis-Saclay CEACNRSNIMBELEEL91191Gif-sur-YvetteFrance UniversitéParis-Saclay CEACNRSNIMBELAPA-IRAMAT91191Gif-sur-YvetteFrance

A composite In-Pb:carbon was successfully synthetized by a two-step mechanochemical synthesis in order to obtain an adequate particles size and structure to investigate the electrochemical reactivity of the In-Pb solid solution towards Mg.A potential synergetic coupling of electroactive elements In and Pb was examined using electrochemical and ex situ X-ray diffraction *** potential profile of the solid solution indicates the formation of Mg_(2)Pb and Mg ***,the diffraction study suggests a peculiar electrochemically-driven amorphization of Mg In during the magnesiation,in strong contrast to Mg In crystallization in In-based and In Bi-based electrodes reported in the *** In and Pb favors the amorphization of Mg In and a high first magnesiation capacity of about 550 m Ah g^(-1),but is thereafter detrimental to the material’s *** results emphasize the possible influence of electrochemically-driven amorphization and crystallization processes on electrochemical performance of battery materials.

关键词： Magnesium battery Negative electrode Alloy Amorphization

Multiscale modeling of thermo-hydromechanical behavior of clayey rocks and application to geological disposal of radioactive waste

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Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 1-19页

作者： Jianfu Shao Zhan Yu Minh-Ngoc Vu University of Lille CNRSEC LilleLaMcubeUMR901359000LilleFrance Institut Universitaire de France(IUF) ParisFrance Andra Chatenay MalabryFrance

This work is devoted to numerical analysis of thermo-hydromechanical problem and cracking process in saturated porous media in the context of deep geological disposal of radioactive *** fundamental background of thermo-poro-elastoplasticity theory is first *** emphasis is put on the effect of pore fluid pressure on plastic deformation.A micromechanics-based elastoplastic model is then presented for a class of clayey rocks considered as host *** on linear and nonlinear homogenization techniques,the proposed model is able to systematically account for the influences of porosity and mineral composition on macroscopic elastic properties and plastic yield *** initial anisotropy and time-dependent deformation are also taken into *** induced cracking process is described by using a non-local damage model.A specific hybrid formulation is proposed,able to conveniently capture tensile,shear and mixed *** particular,the influences of pore pressure and confining stress on the shear cracking mechanism are taken into *** proposed model is applied to investigating thermo-hydromechanical responses and induced damage evolution in laboratory tests at the sample *** the last part,an in situ heating experiment is analyzed by using the proposed *** results are compared with experimental data and field measurements in terms of temperature variation,pore fluid pressure change and induced damaged zone.

关键词： Radioactive waste Geological disposal Thermo-hydromechanical coupling Clayey rocks Damage and cracking Phase-field modeling