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Evaluating the Spatial Uncertainty of Future Land Abandonment in a Mountain Valley(Vicdessos, Pyrenees-France): Insights from Model Parameterization and Experiments

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Journal of Mountain Science 2015年第5期12卷 1095-1112页

作者： Thomas Houet Laure Vacquié David Sheeren GEOde UMR 5602 CNRS –UT2J Université Toulouse Jean Jaurès Maison de la recherche 5 allées Antonio Machado31058 Toulouse Cedex Dynafor UMR 1201 INRA/INPT-ENSAT Ecole Nationale Supérieure Agronomique de Toulouse Avenue del’Agrobiopole B.P. 32607 - Auzeville-Tolosane 31326 - Castanet-Tolosan Cédex

European mountains are particularly sensitive to climatic disruptions and land use *** latter leads to high rates of natural reforestation over the last 50 years. Faced with the challenge of predicting possible impacts on ecosystem services,LUCC models offer new opportunities for land managers to adapt or mitigate their *** the spatial uncertainty of future LUCC is crucial for the definition of sustainable land use strategies. However, the sources of uncertainty may differ, including the input parameters, the model itself, and the wide range of possible futures. The aim of this paper is to propose a method to assess the probability of occurrence of future LUCC that combines the inherent uncertainty of model parameterization and the ensemble uncertainty of the future based scenarios. For this purpose, we used the Land Change Modeler tool to simulate future LUCC on a study site located in the Pyrenees Mountains(France) and two scenarios illustrating two land use strategies. The model was parameterized with the same driving factors used for its calibration. The definition of ‘static vs. dynamic' and ‘quantitative ***(discretized)' driving factors, and their combination resulted in four parameterizations. The combination of model outcomes produced maps of the spatial uncertainty of future LUCC. This work involves adapting the definition of spatial uncertainty in the literature to future-based LUCC studies. It goes beyond the uncertainty of simulation models by integrating the uncertainty of the future to provide maps to help decision makers and land managers.

关键词： Land use Land cover Scenario Model Mountainous reforestation Land abandonment Landmanagement

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NUMERICAL STUDY OF FLOW AROUND AN OSCILLATING DIAMOND PRISM AND CIRCULAR CYLINdeR AT LOW KEULEGAN-CARPENTER NUMBER

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Journal of Hydrodynamics 2012年第5期24卷 767-775页

作者： GHOZLANI Belgacem HAFSIA Zouhaier MAALEL Khlifa ecole nationale d'Ingénieurs de Tunis Laboratoire de Modélisation en'Hydraulique et EnvironnementB.P.37.Le Belvédère1002 TunisTunisia

In order to identify the influence of shape comers on the instantaneous forces in the case of oscillating bodies, the simula- ted flow field is compared for two kinds of cross sections： diamond prism and circular cylinder. For these two flow configurations, the same Reynolds number and a Keulegan-Carpenter are considered. To compute the dynamic flow field surrounding the body, the Navier-Stokes transport equations in a non-inertial reference frame attached to the body are considered. Hence, a source term is added locally to the momentum equation to take into account the body acceleration. The proposed model is solved using the PHOENICS code. For the oscillating circular cylinder, the simulated results are in good agreement with the experimental data availa- ble in the litterature. After validation of this proposed model, flow field for diamond prism is determined. For both bodies, the pro- cess of the vortex formation is similar, with the formation of a recirculation zone in the near-wake containing a symmetric pair of vortices of equal strength and opposite rotation. The length of recirculation zone varies approximately linearly with time. However, the in-line force coefficient of the oscillating diamond prism is found to be greatest, since the recirculation zone is longer compared with that of the oscillating circular cylinder.

关键词： oscillating cylinder diamond prism body shape non-inertial frame numerical simulation in-line and transverse forcecoefficient

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Kinetic degradation of amoxicillin by using the electro-Fenton process in the presence of a graphite rods from used batteries

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Chinese Journal of Chemical Engineering 2021年第4期34卷 183-190页

作者： Hakima Kadji Idris Yahiaoui Zehira Garti Abdeltif Amrane Farida Aissani-Benissad Laboratoire de Genie de l'Environnement(LGE) Faculte de TechnologieUniversite de Bejaia06000 BejaiaAlgeria ecole nationale Superieure de Chimie de Rennes Universite RenneslCNRSUMR 622611 allee de BeaulieuCS 50837France

This study reports the removal of amoxicillin(AMX)in aqueous media using the electroFenton process in the presence of a graphite cathode recovered from used *** impact of the relevant parameters on the electroFenton process,namely the applied current intensity,the temperature,the initial concentration of AMX and the initial concentration of ferrous ions were *** results showed that the optimal values were:I=600 mA,T=25℃,[AMX]_(0)=0.082 mmol·L^( 1) and[Fe^(2+)]=1 mmol·L^(1),leading to 95%degradation and 74%*** model parameters of AMX mineralization were determined using nonlinear methods,showing that it follows a pseudosecondorder *** Energy consumption(EC)calculated under the optimal values was found to be 0.79 kWhg 1,which was of the same order of magnitude of those reported in other findings;while it is noteworthy that the electrodes used in our study are of a lower cost.

关键词： Wastewater Amoxicillin Electro-Fenton Pharmaceuticals Solid waste recovery Kinetic modelling

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Exergo-Environmental Study of a Recent Organic Solar Hybrid Heat Pump

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Fluid Dynamics & Materials Processing 2023年第4期19卷 991-1001页

作者： Rabeb Toujani Nahla Bouaziz Universitéde Tunis El Manar Ecole Nationale D’Ingénieurs de TunisUnitéde Recherche Energ tique et EnvironnementTunis1002Tunisie

A hybrid heat pump(compression/absorption)with an integrated thermal photovoltaic unit is *** considered working fluids are organic mixtures:R245fa/DMAC and R236fa/DMAC,chosen for their low Global Warming *** main objective is the optimization of energy efficiency in order to minimize the environmental impact through the implementation of a sustainable *** is shown that Exergy Analysis itself is a valuable tool in energy *** the imposed framework of minimizing total annual costs,entropy analysis can be instrumental in determining the optimal plant concept,optimizing energy conversion and use,and improving *** present results are discussed under the optimistic hope that they may help to define new energy and environmental policies.

关键词： Impact environmental exergy analysis CO_(2)emissions solar hybrid heat pump

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Seroprevalence of Bluetongue Virus Antibody in Ruminants from Grenada

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Open Journal of Veterinary Medicine 2016年第6期6卷 99-103页

作者： Ravindra Nath Sharma Sureni Beckford Keshaw Tiwari Elodie Vinet derek Thomas Claude de Allie Alfred Chikweto School of Veterinary Medicine St. George’s University St. George’s Grenada ecole nationale vererinaire de toulouse Toulouse France Veterinary Section Ministry of Agriculture Fisheries Land and Environment Grenada

The aim of the present study was to estimate the seroprevalence of antibodies to bluetongue virus (BTV) among domestic ruminants of Grenada. Sera samples from cattle (133), goat (314) and sheep (481) were tested using competitive Enzyme-linked immunosorbent assay (c-ELISA). Of the total of 928 samples tested, the overall BTV seroprevalence was 78.4% (95% confidence interval (CI ± 2.65). The seropositivity of ovine, caprine and bovine was found to be 71.7% (95% CI, 67.67% to 75.73%), 80.2% (95% CI, 75.79% to 84.61%) and 98.5% (95% CI, 96.43% to 100.57%), respectively. There was statistical significance in the seroprevalence of BTV among bovine, caprine and ovine (p dent from this study that blue tongue virus is endemic in Grenada.

关键词： Blue Tongue Virus c-ELISA Seroprevalence Grenada Ruminants

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Control of light emission of quantum emitters coupled to silicon nanoantenna using cylindrical vector beams

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Light(Science & Applications) 2023年第10期12卷 2248-2255页

作者： Martin Montagnac Yoann Brûlé Aurélien Cuche Jean-Marie Poumirol Sébastien J.Weber Jonas Müller Guilhem Larrieu Vincent Larrey Franck Fournel Olivier Boisron Bruno Masenelli Gérard Colas des Francs Gonzague Agez Vincent Paillard CEMES-CNRS Universitéde ToulouseToulouseFrance ICB Universitéde BourgogneCNRSDijonFrance LAAS-CNRS Universitéde ToulouseToulouseFrance CEA-LETI UniversitéGrenoble-AlpesGrenobleFrance Universitéde Lyon UniversitéLyon 1CNRS UMR 5510ILMVilleurbanneFrance Universitéde Lyon INSA LyonCNRSEcole Centrale de LyonUniversitéLyon 1CPEUMR 5270INLVilleurbanneFrance Bruno Masenelli

Light emission of europium(Eu^(3+))ions placed in the vicinity of optically resonant nanoantennas is usually controlled by tailoring the local density of photon states(LDOS).We show that the polarization and shape of the excitation beam can also be used to manipulate light emission,as azimuthally or radially polarized cylindrical vector beam offers to spatially shape the electric and magnetic fields,in addition to the effect of silicon nanorings(Si-NRs)used as *** photoluminescence(PL)mappings of the Eu^(3+)transitions and the Si phonon mappings are strongly dependent of both the excitation beam and the Si-NR *** experimental results of Raman scattering and photoluminescence are confirmed by numerical simulations of the near-field intensity in the Si nanoantenna and in the Eu^(3+)-doped film,*** branching ratios obtained from the experimental PL maps also reveal a redistribution of the electric and magnetic emission *** results show that it could be possible to spatially control both electric and magnetic dipolar emission of Eu^(3+)ions by switching the laser beam polarization,hence the near field at the excitation wavelength,and the electric and magnetic LDOS at the emission *** paves the way for optimized geometries taking advantage of both excitation and emission processes.

关键词： excitation cylindrical spatially

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Preparation of solar-enhanced AlZnO@carbon nano-substrates for remediation of textile wastewaters

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Journal of Environmental Sciences 2020年第6期32卷 52-68页

作者： Esraa M.El-Fawal Sherif A.Younis Yasser M.Moustafa Philippe Serp Central Laboratories Analysis and Evaluation DepartmentEgyptian Petroleum Research InstituteNasr CityCairo 11727Egypt Laboratoire de Chimie de Coordination(LCC) Unite Propre de Recherche(UPR)Du Centre National de La Recherche Scientifique(CNRS)8241Composante de L’Ecole Nationale D’Ingenieurs en Arts Chimiques et Technologiques(ENSIACET)Universite de ToulouseUniversite Paul Sabatier(UPS)Institut National Polytechnique(INP)-LCC4 Allee Emile Monso31030Toulouse Cedex 4France

Photoactive aluminum doped ZnO(AlZnO)was synthesized by sol-gel *** that,AlZnO photocatalyst was deposited on five carbon-based materials(CBMs)using ultrasonic route followed by solid-state mixing using ball *** CBMs used were poly aniline(PANI),carbon nitride(CN),carbon nanotubes(CNT),graphene(G),and carbon nanofibers(CNF).The crystal phases,elemental compositions,morphological,and optical properties of the AlZnO@CBMs composites were *** results revealed that two of AlZnO@CBMs composites exhibited superior bleaching efficiency(100%removal)and photocatalytic stability(three cycles)for 50μmol/L Methylene Blue(MB)contaminated water after 60 min irradiation in visible light at pH 6.5,0.7%H2O2,and 5 g/L inorganic *** optimum conditions,AlZnO@CBMs nanocomposites were employed for the treatment of mixed dyestuffs composed of MB,Methyl Orange(MO),Astrazone Blue FRR(BB 69),and Rhodamine B(RhB)dyes under dark,ultraviolet,visible,and direct *** mixed dyestuffs,the AlZnO@G achieved the highest dye sorption capacity(60.91μmol dye stuffs/g)with kinetic rate 8.22×10^-3 min^-1 in 90 min via multi-layer physisorption(Freundlich isotherm)on graphene *** additions,AlZnO@CN offered the highest photo-kinetic rate(Kphoto)of^54.1×10^-3 min^-1(93.8%after 60 min)under direct ***,the selective radical trapping experiment confirmed that the holes and oxidative superoxide radicals are crucial on dyes photodegradation *** to their superior performance,AlZnO@G and AlZnO@CN nanocomposites can offer an effective in-situ solar-assisted adsorption/photocatalytic remediation of textile wastewater effluents.

关键词： Carbon nanomaterials AlZnO photocatalyst Hybrid adsorption/photo-catalysis Kinetic and isotherm modeling Textile wastewater remediation

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An evolutionary computational framework for capacity-safety trade-off in an air transportation network

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Chinese Journal of Aeronautics 2019年第4期32卷 999-1010页

作者： Md.Murad HOSSAIN Sameer ALAM Daniel deLAHAYE School of Engineering and Information Technology University of New South Wales School of Mechanical and Aerospace Engineering Nanyang Technological University MAIAA Laboratory Ecole Nationale de l'Aviation Civile

Airspace safety and airport capacity are two key challenges to sustain the growth in Air Transportation. In this paper, we model the Air Transportation Network as two sub-networks of airspace and airports, such that the safety and capacity of the overall Air Transportation network emerge from the interaction between the two. We propose a safety-capacity trade-off approach,using a computational framework, where the two networks can inter-act and the trade-off between capacity and safety in an Air Transport Network can be established. The framework comprise of an evolutionary computation based air traffic scenario generation using a flow capacity estimation module(for capacity), Collision risk estimation module(for safety) and an air traffic simulation module(for evaluation). The proposed methodology to evolve air traffic scenarios such that it minimizes collision risk for given capacity estimation was tested on two different air transport network topologies(random and small-world) with the same number of airports. Experimental results indicate that though airspace collision risk increases almost linearly with the increasing flow(flow intensity) in the corresponding airport network, the critical flow depend on the underlying network configuration. It was also found that, in general, the capacity upper bound depends not only on the connectivity among airports and their individual performances but also the configuration of waypoints and mid-air interactions among conflicts. Results also show that airport network can accommodate more traffic in terms of capacity but the corresponding airspace network cannot accommodate the resulting traffic flow due to the bounds on collision risk.

关键词： Airport network Airspace capacity Airspace safety Collision risk Flow intensity

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A low power consumption control scheme:application to a piezostack-based active mount

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Frontiers of Mechanical Engineering 2013年第4期8卷 383-389页

作者： T.LOUKIL O.BAREILLE M.N.ICHCHOU M.HADDAR LTDS Ecolc Centrale de Lyon36 Avenue Guy de Collongue U2MP Ecole Nationale d'lngenieurs de Sfax

Piezostack-based active mounts have shown great efficiency for vibration control in a wide frequency *** this paper,we investigate the performances of the global semi-active control strategy presented by Ichchou et al.[1]for a control system consisting of an active mount and a supported *** control strategy allows extracting vibrations energy of the supported mass,storing it in accumulators to be reused for powering in part the actuators(two piezostacks).Consequently,energy needs are reduced versus good control performances comparable to those of the active control based on the negative velocity *** performances of the controller are evaluated in both frequency(transmitted force)and time(acceleration)domains which show that vibrations of the supported mass due to base excitations are efficiently attenuated with the proposed *** energetic analysis confirms the reduced energy requirement compared to the active scheme.

关键词： hybrid mount energy control piezoelectric harvesting

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Organic transistor platform with integrated microfluidics for in-line multi-parametric in vitro cell monitoring

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Microsystems & Nanoengineering 2017年第1期3卷 184-195页

作者： Vincenzo F.Curto Bastien Marchiori Adel Hama Anna-Maria Pappa Magali P.Ferro Marcel Braendlein Jonathan Rivnay Michel Fiocchi George G.Malliaras Marc Ramuz Róisín M.Owens department of Bioelectronics Ecole Nationale Supérieure des MinesCMP-EMSEMOC880 Avenue de MimetGardanne 13541France Flexible Electronics department Ecole Nationale Supérieure des Mines CMP-EMSEMOC880 Avenue de MimetGardanne 13541France department of Biomedical Engineering Northwestern UniversityEvanstonIL 60208USA

Future drug discovery and toxicology testing could benefit significantly from more predictive and multi-parametric readouts from in vitro *** the recent advances in the field of microfluidics,and more recently organ-on-a-chip technology,there is still a high demand for real-time monitoring systems that can be readily embedded with *** addition,multi-parametric monitoring is essential to improve the predictive quality of the data used to inform clinical studies that *** we present a microfluidic platform integrated with in-line electronic sensors based on the organic electrochemical *** goals are twofold,first to generate a platform to host cells in a more physiologically relevant environment(using physiologically relevant fluid shear stress(FSS))and second to show efficient integration of multiple different methods for assessing cell morphology,differentiation,and *** include optical imaging,impedance monitoring,metabolite sensing,and a wound-healing *** illustrate the versatility of this multi-parametric monitoring in giving us increased confidence to validate the improved differentiation of cells toward a physiological profile under FSS,thus yielding more accurate data when used to assess the effect of drugs or ***,this platform will enable high-content screening for in vitro drug discovery and toxicology testing and bridges the existing gap in the integration of in-line sensors in microfluidic devices.

关键词： bioelectronics in-line sensors in vitro microfluidics

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