Search results for "sds"

NEMIS, a predictive model of denitrification on the field scale

2000

Reassessement of the Kec coefficient of the fumigation-extraction method in a soil profile

1998

Regulation of bacterial and fungal MCPA degradation at the soil–litter interface

2010

Abstract Much is known about mechanisms and regulation of phenoxy acid herbicide degradation at the organism level, whereas the effects of environmental factors on the performance of the phenoxy acid degrading communities in soils are much less clear. In a microcosm experiment we investigated the small-scale effect of litter addition on the functioning of the MCPA degrading communities. 14 C labelled MCPA was applied and the functional genes tfdA and tfdAα were quantified to characterise bacterial MCPA degradation. We identify the transport of litter compounds as an important process that probably regulates the activity of the MCPA degrading community at the soil–litter interface. Two possi…

THE TRANS-ATLANTIC TRADE AND INVESTMENT PARTNERSHIP AND SOCIAL RIGHTS: WHAT KIND OF HARMONISATION?

2017

Il presente lavoro analizza il processo di negoziazione del Trattato di libero scambio tra USA ed Unione Europea, il Trans-Atlantic Trade and Investment Partnership (c.d. TTIP), con particolare riguardo all’impatto che potrebbe avere sui diritti sociali nel vecchio continente. Più in particolare, l’articolo analizza i rischi di abbassamento delle tutele che il TTIP avrebbe su contrattazione collettiva e licenziamenti, facendo leva su un argomento storico-giuridico: infatti le culture giuridiche degli Stati membri dell’Unione, nonostante presentino a volte marcate differenze, differiscono dal modello individualistico e liberale del diritto americano. In relazione al contenuto del TTIP viene …

Master-Slave Control of Battery/Supercapacitor Based Hybrid Energy Storage System for E-Vehicle Application

2022

In this paper, management and control problem of hybrid energy storage system (HESS) has been solved by master-slave control strategy. Heuristic fuzzy rules based algorithm is developed for optimal power sharing between different power sources. The master control is followed by a slave level controller, designed by using terminal synergetic control method for tracking. Moreover, the stability analysis of closed-loop system has been carried out by using lyapunov theory. Finally, the proposed method has been tested in MATLAB/Simulink environment under Worldwide Harmonised Light Vehicle Test Procedure (WLTP).

Influence of organic amendments on diuron leaching through an acidic and a calcareous vineyard soil using undisturbed lysimeters.

2008

9 pages; International audience; The influence of different organic amendments on diuron leaching was studied through undisturbed vineyard soil columns. Two composts (A and D), the second at two stages of maturity, and two soils (VR and Bj) were sampled. After 1 year, the amount of residues (diuron þ metabolites) in the leachates of the VR soil (0.19e0.71%) was lower than in the Bj soil (4.27e8.23%), which could be explained by stronger diuron adsorption on VR. An increase in the amount of diuron leached through the amended soil columns, compared to the blank, was observed for the Bj soil only. This result may be explained by the formation of mobile complexes between diuron and water-extrac…

Total petroleum hydrocarbons (TPH) determination in surfactant stabilized marine water emulsions

2022

Bilge waters are wastewaters produced on boats during navigation and usually contain hydrocarbons and oils. They cannot be released into the sea if not below certain hydrocarbon concentration limits set by current legislation. Surfactants are often used to improve the solubility of petroleum hydrocarbons in water and in this work, the analytical approach proposed is suitable to determine accurately the concentration of hydrocarbons in surfactant-rich waters, as found in bilge water or similar wastewater. The method relies on the surfactant precipitation by addition of potassium and calcium salts, which also promote TPH extraction through a “salting out” effect. This allows for an accurate d…

Erosion des sols viticoles et adaptation aux changements : vulnérabilité, diagnostic et stratégie d'adaptation. De l’adaptation des pratiques à la ré…

2018

International audience

Compost Effect on Diuron Retention and Transport in Structured Vineyard Soils

2015

12 pages; International audience; Diuron is frequently detected in surface- and groundwater under the vineyards, where organic amendments are often used, in Burgundy of France. Undisturbed column experiments were conducted to study the influence of three composted organic amendments on diuron leaching through columns of two vineyard soils from Vosne-Romanée (VR, calcareous Cambisol) and Beaujolais (Bj, sandy Leptosol), France. Bromide (used as non-reactive tracer) and diuron breakthrough curves (BTCs) were analyzed using convectivedispersive equation (CDE), two-region (mobile-immobile, MIM) and two-site models. No influence of the composts was observed on the bromide recovery rates. The CDE…

Soil moisture dynamic in the root-zone revealed by time-lapse electrical resistivity tomography:application to Corton Hill, Burgundy (France).

2012

4 pages; International audience