Laboratoire Eau Environnement et Systèmes Urbains (Leesu)

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907.
titre
COVID lockdown significantly impacted microplastic bulk atmospheric deposition rates
auteur
Max Beaurepaire, Johnny Gasperi, Bruno Tassin, Rachid Dris
article
, 2024, 344, pp.123354. ⟨10.1016/j.envpol.2024.123354⟩
titre
Fate of nitrogen in French human excreta: Current waste and agronomic opportunities for the future
auteur
Thomas Starck, Tanguy Fardet, Fabien Esculier
article
, 2024, 912, pp.168978. ⟨10.1016/j.scitotenv.2023.168978⟩
titre
The role of turbulence in the deposition of intrinsically buoyant MPs
auteur
Marziye Molazadeh, Guilherme Calabro-Souza, Fan Liu, Bruno Tassin, Lorenzo Rovelli, Andreas Lorke, Rachid Dris, Jes Vollertsen
article
, 2024, 911, pp.168540. ⟨10.1016/j.scitotenv.2023.168540⟩
titre
Straightforward Way to Provide Antibacterial Properties to Healthcare Textiles through N -2-Hydroxypropyltrimethylammonium Chloride Chitosan Crosslinking
auteur
Julie Fouilloux, Samir Abbad Andaloussi, Valérie Langlois, Lasâad Dammak, Estelle Renard
article
, 2024, 9 (5), pp.5440-5451. ⟨10.1021/acsomega.3c06832⟩
titre
Microplastic accumulation in sewer sediments and its potential entering the environment via combined sewer overflows: a study case in Paris
auteur
Minh Trang Nguyen, Ngoc Nam Phuong, Mohamed Saad, Bruno Tassin, Thomas Gillet, Sabrina Guérin-Rechdaoui, Sam Azimi, Vincent Rocher, Johnny Gasperi, Rachid Dris
article
, 2024, ⟨10.1007/s11356-023-31734-8⟩

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Séminaire d’Allen Hunt le 14 mars 2011

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Séminaire d’Allen Hunt le 14 mars 2011

Dans le cadre des séminaires du LEESU, le professeur Allen Hunt, de l’université Wright State (USA) a fait une intervention intitulée "Solute dispersion in porous media" le lundi 14 mars à l’École des Ponts ParisTech, à Champs sur Marne.

Le résumé de son séminaire est :

Percolation cluster statistics and critical path analysis can be combined to generate the probability that a given volume of a porous medium can be covered by a network of paths with a given minimum conductance value. The topology of percolation clusters can then be applied to find the time required for solutes to cross such clusters. An appropriate probabilistic identity gives the probability that solute will arrive at, say, the right end of the volume if it enters the left end at a given time. The calculation yields the observed distribution of arrival times in simulations as well as the long-time tail of the distribution in fracture flow. The spatial moments are obtained from an analogous calculation for the spatial distribution at an instant in time. When the input distribution of local conductance values is monomodal with a single scale of heterogeneity and in the case that diffusive processes are explicitly neglected, the output distribution of dispersivity values matches a compilation of 2200 observation over ten orders of magnitude of length scale. This result requires a complete rethinking of the role of multiple scales of heterogeneity as well as a reevaluation of the appropriateness of stochastic subsurface hydrology and the role of diffusion-like processes in dispersion.