A major path helping agriculture achieve the dual challenges of production and environmental preservation, consists transitioning from current, external input-based, conventional farming systems to a biodiversity-based agricultural system that rely more on ecosystem services. One lever this transition diversifying agri-food using practices such as rotation extension, intercropping (IC), multipl...

With the properties of laterites being related to nature rock from which they are derived, twenty vertical electrical surveys and boreholes for geotechnical tests, distributed in two units (plutonic green belt zones) Ntem complex located at northern limit Congo Craton, were implemented study formation process this geological structure. The inversion geoelectrical data plutonic area resulted thr...

Mineral trace elements (MTE) constitute an environmental restriction on the recycling of municipal solid waste incineration-bottom ash (MSWI-BA). The study speciation MTE and factors that control their release allows to predict behavior under different conditions and, consequently, suggest actions expand management MSWI-BA.A geochemical modeling led a better understanding MTE. In this study, ta...

Wetting front instability (fingered flow) accelerates solute transport through the unsaturated zone to the groundwater table. Whether fingers widen or dissipate close to the groundwater is unclear. Water flow in a two-dimensional artificial capillary fringe below a dry layer exhibiting fingered flow was investigated. The flow diverged strongly in the wet soil, suggesting that fingers dissipate....

Human activities worldwide menace beneficial soil ecosystem services, but long-term anthropogenic impacts on properties and processes are often difficult to assess in field conditions. Here we exploited INRAE’s patrimonial ‘42-plots’ bare-fallow experiment, an unique long term experiment the world created 1928 Versailles (France), emphasize of annual inputs NPK fertilizers (ammonium, phosphate,...

RésuméUn profil d’altération développé sur chloritoschistes de la zone Bengbis (Sud Cameroun) a été choisi pour quantifier l’intensité l’altération et comprendre le comportement des terres rares. Les valeurs l’indice mafique combinées aux diagrammes ternaires du système Al – Fe Mg Ca Na K montrent que l’hydrolyse feldspaths est proportionnelle à celle minéraux mafiques (pertes en Mg), bien plag...

Baltasar-George Sage (1740-1824), a conflictive chemist and mining engineer, and one of the last supporters of the phlogiston theory and the old chemical nomenclature, carried on a large number of metallurgical researches, discovered hypophosphoric acid and solid potassium ferrocyanide. His most achievement was the foundation of the School of Mines of Paris. LIFE AND CAREER In his biography Bal...