Browsing by Author "Saidi, M"

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    CORROSION BEHAVIOR OF API N80 STEEL MATERIAL IN ALBIEN WATER
    (2018-09-01) Chelgham, F; Bouzid, N; Saidi, M; Boumaza, A; Taabouche, A.; Boudjema, S
    At Hassi-Messaoud, the recuperation of oil is assisted by injection of water extracted from Albian aquifer. To increase the injection capacity of the water, API N80 concentric has been installed along production wells, the difference between the temperature of the water wells and that of the water injected into the concentric generates a temperature gradient ΔT varying in depth and up to 16°C. The present study endeavors to examine, first the effect of tempering temperature on the corrosion behavior of API N80 pipe in Albian water at different temperature gradients and then to determine the nature of corrosion deposit. Polarizations results for samples tested at different ∆T shows a general decline in corrosion rate values with increase in tempering temperature. FTIR and XRD analysis revealed that corrosion scale is heterogeneous; the formation of various compounds depends strongly on temperature.
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    INFLUENCE OF PHENOLIC COMPOUNDS ON ANTIOXIDANT CAPACITY OF LEAVES EXTRACTS OF MORINGA OLEIFERA FROM TAMANRASSET REGION
    (university of el oued/جامعة الوادي, 2019-01-01) Djemoui, D; Saidi, M; Rahmani, Z; Djemoui, A
    In the present research the crude extract and all fractions of Moringa oleifra leaves grown in Tamanrasset, were examined for its antioxidant activities by using three different assays such as DPPH scavenging activity, superoxide anion scavenging activity and phosphomolybdenum capacity.The quantitative estimation of total phenolics, flavonoids and tannins content additionally was calculated by spectrophotometric methods.The results showed that the extracts contained total phenolic compound at concentration of 32.985±0.07 to 309.418 ± 0.71 (mg GAE/g EW) and higher total flavonoids contents of 5.192 ± 0.17 to 44.695 ± 0.23 (mg QE/g EW), for total tannins contents of 3.864 ±0.07 to 15.148 ± 0.66 (mg/g). It also this experiment found out that each extract confirmed a good antioxidant. Consequently, it can be concluded that the phenolic compounds content may be answerable for the good activities of Moringa oleifra leaves.