A5026140245- Advanced Mathematical Modeling in Engineering
- Nonlocal and gradient elasticity in micro/nano structures
- Elasticity and Material Modeling
- Composite Material Mechanics
- Drilling and Well Engineering
- Soil and Unsaturated Flow
- Pesticide Exposure and Toxicity
- Thermoelastic and Magnetoelastic Phenomena
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
- Carcinogens and Genotoxicity Assessment
- Geotechnical Engineering and Soil Mechanics
- Solidification and crystal growth phenomena
- Geotechnical Engineering and Underground Structures
- Grouting, Rheology, and Soil Mechanics
- Lattice Boltzmann Simulation Studies
- Numerical methods in engineering
- Hydraulic Fracturing and Reservoir Analysis
- Rock Mechanics and Modeling
- Toxic Organic Pollutants Impact
- Dam Engineering and Safety
- Geotechnical Engineering and Analysis
- Fluid Dynamics Simulations and Interactions
- Air Quality and Health Impacts
- Seismic Imaging and Inversion Techniques
Institut de Recherche en Génie Civil et Mécanique
2011-2024
École Centrale de Nantes
2017-2024
Centre National de la Recherche Scientifique
2018-2024
Nantes Université
2019-2024
Sapienza University of Rome
2008-2019
University of Perugia
2019
University of Siena
1988-2017
Universitat Politècnica de Catalunya
2017
University of Rome Tor Vergata
2017
Tecnologia Energia Ambiente Materiali (Italy)
2005-2010
In the spirit of Germain most general objective stored elastic energy for a second gradient material is deduced using literature result Fortuné & Vallée. Linear isotropic constitutive relations stress and hyperstress in terms strain strain-gradient are then obtained proving that these materials characterized by seven moduli generalizing previous studies Toupin, Mindlin Sokolowski. Using suitable decomposition strain-gradient, it found necessary sufficient condition, to be verified...
Second gradient theories have to be used capture how local micro heterogeneities macroscopically affect the behavior of a continuum.In this paper configurational space for solid matrix filled by an unknown amount fluid is introduced.The Euler-Lagrange equations valid second poromechanics, generalizing those due Biot, are deduced means Lagrangian variational formulation.Starting from generalized Clausius-Duhem inequality, in framework theories, existence macroscopic skeleton deformation...
The determination of urinary alkylphosphates monitors occupational exposure to organophosphorus pesticides and insecticides. This paper describes a method for the quantitative following metabolites: O,O-dimethylphosphate (DMP), O,O-diethylphosphate (DEP), O,O-diethyldithiophosphate (DETP), O,O-dimethyldithiophosphate (DMDTP), (DEDTP), O,O-dimethylthiophosphate (DMTP). compounds are derivatized with pentafluorobenzylbromide into pentafluorobenzyl esters which determined by gas chromatography...
The second gradient model of poromechanics, introduced in Part I, is here linearized the neighborhood a prestressed reference configuration to be applied one-dimensional consolidation problem originally considered by Terzaghi and Biot.Second models allow for description boundary layer effects both vicinity external surface impermeable wall.The formulated differential involves linear pencils ordinary operators on finite interval, with conditions depending spectral parameter.Taking into...
In 1999, the European Union proclaimed hardwood dust carcinogenic based on classification of International Agency for Research Cancer (IARC) issued in 1995. The operational exposure limit (OEL) inhalable wood has been set to 5 mg m-3 by EU directives, though different countries OEL ranges from 1 m-3. objective this study was determine forest workers chainsaw cutting and processing suggest possible countermeasures. took into consideration silvicultural treatments (coppice clear cut, conifer...
The results of environmental (11 subjects) and biological (57 monitoring exposure to mancozeb, ethylenethiourea (ETU), dimethoate are reported for employees a firm producing commercial formulations containing these active ingredients. Urinary excretion [GM(GSD)] ETU (microg/g creatinine) alkylphosphates [dimethylphosphate (DMP) + dimethylthiophosphate (DMTP) dimethyldithiophosphate (DMDTP)] (nmol/g was 65.3(4.8) 419.2(2.1), respectively, engaged in the formulation product 80% mancozeb (n =...
To investigate the validity of empirical models exposure to bitumen fume and benzo(a)pyrene, developed for a historical cohort study asphalt paving in Western Europe.Validity was evaluated using data from USA, Italy, Germany not used develop original models. Correlation between observed predicted exposures examined. Bias precision were estimated.Models imprecise. Furthermore, tended be lower (-70%) than concentrations found during USA. This apparent bias might attributed differences European...
Abstract Granular soils subjected to seepage flow may suffer suffusion, ie, a selective internal erosion. Extending the classical approach of poromechanics, we deduce new form Clausius‐Duhem inequality accounting for dissipation due and restrictions on constitutive laws soil. We suggest (a) possible coupling between forces suffusion kinetics (b) an extension existing elastoplastic model skeleton mechanical behaviour. Numerical integrations are carried out under drained axisymmetric triaxial...
Flows involving immiscible displacement of one fluid by another in a porous media are known to destabilize and form fingering. When the non-wetting is highly mobile gas (air) wetting an in-compressible liquid (water) classical macroscopic theory unable describe fingered flow. In Part I this study we have introduced model that interprets mixture fluids within pore space as single saturating non-uniform characterized phase field parameter, which considered be saturation degree fluid. current...
The behavior of a partially saturated soil during surface-water infiltration is analyzed by means an elasto-plastic constitutive model formulated in terms effective stress and extended to unsaturated conditions. calibrated considering laboratory-scale experimental results under suction-controlled wetting process two collapsing soils, initially loaded at situ stresses, simulated imposing different boundary conditions: surface ponding water flow. paths resulting from the imbibition are points...