The city of Tulear is undergoing environmental degradation. wastewater heavily polluted, the average values observed for biological oxygen demand (282,347 ± 76,907 mg.L-1), chemical (579,302 161,102 and suspended solids (859,114 816,707 mg.L-1) are above standard discharge values. This study allowed us to design a treatment system make technical, economic, social assessment plant. Thus, method ...

Cette contribution vise à « déplier » le concept didactique de communauté discursive disciplinaire scolaire, l’articulation la théorie historique et culturelle psychologie des apprentissages, travaux sociologues, philosophie du langage sciences langage, pour ébaucher une modélisation l’enseignement / apprentissage l’école, susceptible d’orchestrer l’hétérogénéité discours classe. Le CDDS crista...

Pour penser les environnements capacitants, il apparaît nécessaire de clarifier le rôle des objets matériels et leurs usages normatifs dans la situation telle qu’elle est vécue par sujet. En quoi favorisent-ils leur pouvoir d’agir ? L’étude a pour ambition documenter contraintes corporelles, sociales, motrices ou cognitives rencontrées en éducation physique sportive à travers relation sujet-obj...

In studies conducted in 2017-2020. It has been proved that the erosion and of Amu Darya's banks, which occur due to rapid uneven changes its channel, requires large expenditures for bringing water Amu-Bukhara channel with a damless intake. An analysis pumping station data shows uninterrupted movement system intake-distribution-channel-sediment retention system-system-fore-chamber-suction pipes-...

Clean water is one of the most significant challenges for our society. Efficient reuse effluent after treatment can becomes an effective solution to shortage resources. The focus this study investigate use Eichhornia crassipes plants post clarified municipal residential sewage under natural conditions using a small pilot Laboratory Water Hyacinth Clarifier system. Twelve are used total phosphor...

nowadays, food industries by- product is one of the best choice for functional and novel food products. bitter compound is the main problem to use lemon juice by-product.in this study, press peel and clarifier pulp residues were used to produce marmalade and drink.the vacuum method was proved to be the best debittering process.this pulp contains considerable amount of pectin and acid which appr...

Au début des années 1990 naissait un nouveau champ didactique résolument plurilingue et européen, celui de l'intercompréhension. Depuis, lieux produits formation recherche se sont multipliés (Galatea, Galanet, Galapro, Eurocomcenter, Redinter, Miriadi...). Si dans la première phase son développement, toute une série définitions ont surgi sans que l’on parvienne à s’accorder sur formule optimale...

Microbial fuel cells (MFCs) have been used to produce electricity from different compounds, including acetate, lactate, and glucose. We demonstrate here that it is also possible to produce electricity in a MFC from domestic wastewater, while atthe same time accomplishing biological wastewater treatment (removal of chemical oxygen demand; COD). Tests were conducted using a single chamber microbi...

Experiments were carried out to establish whether nitrous oxide (N2O) could be used as a non-invasive early warning indicator for nitrification failure. Eight experiments were undertaken; duplicate shocks DO depletion, influent ammonia increases, allylthiourea (ATU) shocks and sodium azide (NaN3) shocks were conducted on a pilot-scale activated sludge plant which consisted of a 315 L completely...