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Wyszukujesz frazę "Souissi, M." wg kryterium: Autor

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    Wyświetlanie 1-2 z 2
    Tytuł:
    Control strategies for the grid side converter in a wind generation system based on a fuzzy approach
    Autorzy:
    Harrabi, N.
    Kharrat, M.
    Aitouche, A.
    Souissi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/331304.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    wind energy conversion system
    DC link
    DC-AC converter
    Mamdani fuzzy controller
    T–S fuzzy controller
    elektrownia wiatrowa
    przekształtnik DC-AC
    regulator rozmyty typu Mamdaniego
    Opis:
    Two techniques for the control of a grid side converter in a wind energy conversion system. The system is composed of a fixed pitch angle wind turbine followed by a permanent magnet synchronous generator and power electronic converters AC-DC-AC. The main interest is in how to control the inverter in order to ensure the stability of the DC link voltage. Two control methods based on the fuzzy approach are applied and compared. First, a direct Mamdani fuzzy logic controller is presented. Then, a T–S fuzzy controller is elaborated based on a T–S fuzzy model. The Lyapunov theorem and H-infinity performance are exploited for stability analysis. Besides, the feedback controller gains are determined using linear matrix inequality tools. Simulation results are derived in order to prove the robustness of the proposed control algorithms and to compare their performances.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2018, 28, 2; 323-333
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological and biochemicals changes modulated by seeds’ priming of lentil (Lens culinaris L.) under salt stress at germination stage
    Autorzy:
    Bouallègue, A.
    Souissi, F.
    Nouairi, I.
    Souibgui, M.
    Abbes, Z.
    Mhadhbi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/12304629.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    lentil
    Lens culinaris
    seed priming
    physiological change
    biochemical change
    antioxidant enzyme
    germination
    salinity
    salt stress
    Opis:
    Seed priming is one of the potential physiological approaches to enhance the seed germination under the salinity stress. The present study examined the role of two seed priming molecules: salicylic acid (SA) and hydrogen peroxide (H2O2), in enhancing the salt tolerance of lentil seeds at germination stage. Salinity stress caused significant decrease in germination percentage and primary root elongation. This decrease was associated with significant increase in lipid peroxidation and total lipid (TL) contents in embryonic axis. The catalase (CAT), guaiacol peroxydase (GPOX) and superoxide dismutase (SOD) activities remained unchanged or decreased significantly under the influence of salt stress, in both embryonic axis and cotyledons. Starch mobilization was not affected by the salt stress. The two priming treatments effectively alleviated the negative effects of salinity stress. SA and H2O2 applications after dose optimization resulted in a significant enhancement of germination percentage and primary root elongation. No significant changes in starch, soluble sugars contents and SOD activity were detected following SA and H2O2 treatments. Seed priming treatments triggered the activities of GPOX and CAT and caused the reduction in lipid peroxidation, especially in embryonic axis. TL content and especially the fatty acid C18:3 increased after SA applications. Better performance under salt stress of primed lentil seeds was associated with lower lipid peroxidation, and activation of enzymatic antioxidative defense system. Obtained results confirm the potential for using SA and H2O2 to improve germination and plant growth under salt stress conditions.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 27-38
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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