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The bio-interactions between plants,insecticides and fertilizers:an innovative approach for the research of xenobiotic substances

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Natural Products and Bioprospecting 2022年第1期12卷 678-684页

作者： Frédéric Darriet Institute of Research for Development(IRD delegation Occitanie) Maladies Infectieuses et VecteursÉcologieGénétiqueÉvolution et Contrôle(MIVEGEC)Universitéde MontpellierIRDCNRSBP 64501911 Avenue Agropolis34394 Montpellier Cedex 5France

In this experiment carried out on Caribbean chili pepper plants(Capsicum chinensis),the bio-insecticide azadirachtin in combination with an NPK fertilizer proved to have a greater lethal impact on the larvae of Aedes albopictus than each substance on its *** synergistic effect is noticeably important when both inputs are sprayed directly on the leaves of the plant(foliar application).While the plants treated with azadirachtin or NPK alone cause a 33.6%and 36.4%mortal-ity respectively of the *** larvae,the combination of the two inputs induces a 74.4%mortality on the mosquito *** account for this synergistic effect phenomenon inside the plant,the azadirachtin+NPK combination most likely interacts with the capsaicinoid compounds naturally produced by the *** only does this study carried out on azadirachtin reveal major results but the methodology itself offers a most interesting approach on how to boost the agricultural inputs within the *** a matter of fact,this research axis demands developing since the control of pests harmful to men has been dramatically lacking insecticide molecules acting on new targets over the past three decades.

关键词： Chili pepper plant Azadirachtin bio-insecticide NPK fertilizer Capsaicinoid compounds Xenobiotic substance Aedes albopictus Innovative research

Time-dependent behaviour of the Callovo-Oxfordian claystone-concrete interface

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第1期12卷 89-101页

作者： Eleni Stavropoulou Matthieu Briffaut Frédéric Dufour Guillaume Camps Univ.Grenoble Alpes CNRSGrenoble INP3SRF-38000GrenobleFrance Agence Nationale pour la gestion des Déchets Radioactifs(Andra) Chatenay-MalabryFrance

In the context of the Cigeo project,the French National Radioactive Waste Management Agency(Andra)is studying the behaviour of a deep geological facility for radioactive waste deposit in the CallovoOxfordian(COx)*** assessment of durability of this project requires the prediction of irreversible strain over a large time *** mechanical interaction of the host rock and the concrete support of tunnels must be investigated to ensure the long-term sustainability of the *** instantaneous and time-dependent behaviour of the claystone-concrete interface is experimentally investigated with direct shear tests and long-duration shear tests of a few *** mechanical and structural state of the claystone which is affected after interaction with concrete reflects to the response of the claystone-concrete interface,and thus different types of COx claystone-concrete interfaces are *** delayed deformation of the interface is found to be linked to the level of the normal loading and the loading history while a different response of the interface was observed from the short-and long-duration tests,indicating a possible progressive modification of interface under long-duration loadings.

关键词： Callovo-Oxfordian(COx)claystone Interfaces Time-dependent behaviour

The formation of orthogonal joint systems and cuboidal blocks:New insights gained from flat-lying limestone beds in the region of Havre-Saint-Pierre(Quebec,Canada)

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第12期15卷 3079-3093页

作者： Shaocheng Ji Yvéric Rousseau Denis Marcotte Noah John Phillips Département des Génies Civil Géologique et des MinesÉcole Polytechnique de MontréalMontréalQuébecH3C 3A7Canada Department of Geology Lakehead UniversityThunder BayOntarioP7B 5E1Canada

Vertical orthogonal joints are a common feature in shallow crustal *** are several competing theories for their formation despite the *** examined the exceptional exposures of orthogonal joints in flat-lying Ordovician limestone beds from the Havre-Saint-Pierre Region in Quebec,Canada(north shore of Saint-Lawrence River)to test conceptual models of joint formation in a natural *** the region,the spacing of cross-joints is consistently larger than the spacing of systematic joints by a factor of 1.5 *** joint-spacing-to-bed-thickness ratios(s/t)are much larger in these beds(s/t=4.3 for systematic joints,and 6.4 for cross-joints)than those in higher strained strata along the south shore of the Saint-Lawrence River(s/t=1),highlighting the effect of tectonic strain in decreasing fracture spacing and block *** high values of s/t indicate that cross-joint formation was unlikely caused by a switch from compression to tension once a critical s/t ratio for systematic joints was reached(as hypothesized in previous studies).We proposed a new model for the formation of orthogonal joint systems where the principal stress axes locally switch during the formation of systematic *** presence of ladder-shaped orthogonal joints suggests a state of effective stress withσ_(1)^(∗)≫0>σ_(2)^(∗)>σ_(3)^(∗)and whereσ_(2)^(∗)-σ_(3)^(∗)is within the range of fracture strength variability at the time of *** research provides a new mechanical model for the formation of orthogonal joint systems and cuboidal blocks.

关键词： Plato's cuboids Orthogonal joints Fracture spacing Limestone Layered rock mechanics Appalachian geology

Effect of Electrolyte Nature on Micellar Soft-Template Electropolymerization in Organic Solvent to Form Nanoporous Polymer Films with a Bioinspired Strategy

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Journal of Bionic Engineering 2022年第2期19卷 547-553页

作者： Caroline Fradin Francois Orange Sonia Amigoni Frédéric Guittard Thierry Darmanin NICE Lab UniversitéCote d’Azur06100 NiceFrance Centre Commun de Microscopie Appliquée(CCMA) UniversitéCote d’Azur06100 NiceFrance

Here,using a bioinspired approach,the soft-template electropolymerization of naphtho[2,3-b]thieno[3,4-e][1,4]dioxine(NaphDOT)was conducted in dichloromethane with different water content,and using different supporting *** role of the electrolytes in the formation of reverse micelles that constitutes the soft template is *** reverse micelles stabilized by the electrolyte and the monomer were observed by TEM and related to the various porous nanostructures of the obtained polymer *** show that the nature of the electrolyte is not only fundamental for the formation of reverse micelles and thus porous nanostructures,but also plays a huge role in the good deposition of the oligomers upon the soft *** with nanostructures such as nanotubes,nanorings or nanomembranes were realized.

关键词： Electropolymerization Soft template Reverse micelles Porous nanostructures

Optimal Port Design Minimizing Standing Waves with A Posteriori Long Term Shoreline Sustainability Analysis

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China Ocean Engineering 2021年第6期35卷 802-813页

作者： Megan COOK Frédéric BOUCHETTE Bijan MOHAMMADI Léa SPRUNCK Nicolas FRAYSSE BRL Ingénierie Nı̂mes 30000France GEOSCIENCES-M University of MontpellierCNRSMontpellier 34090France GLADYS University of MontpellierCNRSLe Grau du Roi 30240France IMAG University of MontpellierCNRSMontpellier 34090France

Optimization theory is applied to a coastal engineering problem that is the design of a *** approach was applied to the redesign of La Turballe Port in order to increase the exploitable surface area and simultaneously reduce the occurrence of long waves within the *** defined the cost function as a weighted function of wave amplitude and with the chosen parameterization of the port,results show that an extended jetty and a widened mole yield a unique optimal *** work demonstrates that numerical optimization may be quick and efficient in the identification of port solutions consistent with classic engineering even in the context of complex problems.

关键词： optimization coastal engineering harbour design hydrodynamics shoreline analysis

Filtered Backprojection Reconstruction with Depth-Dependent Filtering

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Tsinghua Science and Technology 2010年第1期15卷 17-24页

作者： Frank Dennerlein Holger Kunze Frédéric Noo Siemens AG Healthcare SectorForchheim 91301Germany UCAIR Department of RadiologyUniversity of UtahSalt Lake CityUT 84108USA

A direct filtered-backprojection （FBP） reconstruction algorithm is presented for circular cone-beam computed tomography （CB-CT） that allows the filter operation to be applied efficiently with shift-variant band-pass characteristics on the kernel function. Our algorithm is derived from the ramp-filter based FBP method of Feldkamp et al. and obtained by decomposing the ramp filtering into a convolution involving the Hilbert kernel （global operation） and a subsequent differentiation operation （local operation）. The differentiation is implemented as a finite difference of two （Hilbert filtered） data samples and carried out as part of the backprojection step. The spacing between the two samples, which defines the low-pass characteristics of the filter operation, can thus be selected individually for each point in the image volume. We here define the sample spacing to follow the magnification of the divergent-beam geometry and thus obtain a novel, depth-dependent filtering algorithm for circular CB-CT. We evaluate this resulting algorithm using computer-simulated CB data and demonstrate that our algorithm yields results where spatial resolution and image noise are distributed much more uniformly over the field-of-view, compared to Feldkamp＇s approach.

关键词： computed tomography (CT) reconstruction filtered backprojection circular cone-beam CT

Ways and waves of MALT1 paracaspase activation

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Cellular & Molecular Immunology 2018年第1期15卷 8-11页

作者： Laura Israël Frédéric Bornancin Novartis Institutes for BioMedical Research Novartis CampusBaselCH-4002Switzerland

Mucosa-associated lymphoid tissue lymphoma translocation protein 1(MALT1),also known as paracaspase 1,is a ubiquitous protease with homology to caspases.1 The function of MALT1 is best understood in immune cells,in particular lymphocytes,in which MALT1 controls signaling downstream of antigen receptors,for example,nuclear-factor-kappa-B(NF-κB)and mitogen-activated protein kinase *** of MALT1 paracaspase activity has been shown to require the assembly of a tripartite signaling complex termed CBM(CARD11/BCL10/MALT1),which is formed following the phosphorylation and conformational change of caspase recruitment domain 11(CARD11)that is induced by antigen-receptor stimulation.

关键词： MALT1 caspase lymphocytes

Thermal bridging of graphene nanosheets via covalent molecular junctions: A non-equilibrium Green's functions-density functional tightbinding study

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Nano Research 2019年第4期12卷 791-799页

作者： Diego Martinez Gutierrez Alessa ndro Di Pierro Alessa ndro Pecchia Leon ardo Medra no San donas Rafael Gutierrez Mar Bernal Bohayra Mortazavi Gianaurelio Cuniberti Guido Saracco Alberto Fina Dipartimento di Scienza Applicata e Tecnologia Politecnico di Torino 15121 Alessandria Italy Consiglio Nazionale delle ricerche ISMN 00017 Monterotondo Italy Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden 01062 Dresden Germany Center for Advancing Electronics Dresden TU Dresden 01062 Dresden Germany Institute of Structural Mechanics Bauhaus- Universitat Weimar D-99423 Weimar Germany Dresden Center for Computational Materials Science TU Dresden 01062 Dresden Germany

Despite the uniquely high thermal conductivity of graphene is well known,the exploitation of graphene into thermally conductive nanomaterials and devices is limited by the inefficiency of thermal contacts between the individual nanosheets.A fascinating yet experimentally challenging route to enhance thermal conductance at contacts between graphene nanosheets is through molecular junctions,allowing covalently connecting nanosheets,otherwise interacting only via weak Van der Waals *** the bare existence of covalent connections,the choice of molecular structures to be used as thermal junctions should be guided by their vibrational properties,in terms of phonon transfer through the molecular *** this paper,density functional tight-binding combined with Green's functions formalism was applied for the calculation of thermal conductance and phonon spectra of several different aliphatic and aromatic molecular junctions between graphene *** of molecular junction length,conformation,and aromaticity were studied in detail and correlated with phonon tunnelling *** theoretical insight provided by this work can guide future experimental studies to select suitable molecular junctions,in order to enhance the thermal transport by suppressing the interfacial thermal *** is attractive for various systems,including graphene nanopapers and graphene polymer nanocomposites,as well as related *** a broader view,the possibility to design molecular junctions to control phonon transport currently appears as an efficient way to produce phononic devices and controlling heat management in nanostructures.

关键词： thermal conductance molecular junctions Green's functions density functional tight-binding (DFTB) graphene heat transport phonon transmission function

Lattice Boltzmann Simulation of Mixed Convection Heat Transfer in a Driven Cavity with Non-uniform Heating of the Bottom Wall

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Communications in Theoretical Physics 2015年第1期63卷 91-100页

作者： Soufiene Bettaibi Ezeddine Sediki Frdric Kuznik Sauro Succi UR: Rayonnement Thermique Facult des Sciences de Tunis Universit de Tunis El Manar 2092 Tunis Tunisia INSA-Lyon CETHIL F-69621 Villeurbanne France Universit de Lyon CNRS UMR5008 F-69622 Villeurbanne France Research Director IAC-CNR Rome Via dei Taurini 19 00185 Roma

The goal of this article is to study numerically the mixed convection in a differentially heated rid-driven cavity with non-uniform heating of the bottom wall. The velocity field is solved by a hybrid scheme with multiple relaxation time Lattice Boltzmann （MRT-LBM） model, while the temperature field is obtained by resolution of the energy balance equation using the finite difference method （FDM）. First, the model is checked and validated using data from the riterature. Validation of the present resuJts with those available in the literature shows a good agreement. A good efficiency in time simulation is confirmed. Thereafter, the model has been applied to mixed convection in a driven cavity with non-uniform heating wall at the fixed Grashof number Gr = 106. It is found that, the heat transfer is weakened as the richardson number is augmented. For Gr = 106, we note the appearance of secondary vortices at different positions of the cavity corners.

关键词： lattice Boltzmann method (LBM) finite difference method (FDM) heated Lid-driven cavity mixed convection non-uniform heating wall