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    Inhibitory effect of sodium nitrite on corrosion of lead in 0.1 M sodium hydroxide solution 

    Mourad, M.Y.; Abd El-Wahaab, S.M.; Soliman, S.A.; El-Gaber, A.S. ( Council of Scientific and Industrial Research , 1988 , Article)
    The effect of NaNO2 as an inhibitor for corrosion of lead in 0.1 M NaOH solution has been investigated at different temperatures using the Tafel plot technique. The concentrations of NaNO2 employed are in the range 1-5×10-5. ...
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    Polarization resistance study of inhibition of corrosion of lead by sodium benzoate in 0.1 M sodium hydroxide solution 

    Mourad, M.Y.; El Gaber, A.S. ( Council of Scientific and Industrial Research , 1989 , Article)
    The effect of sodium benzoate (SB) as an inhibitor of corrosion of lead in 0.1 M NaOH solution has been investigated by using the polarization resistance technique. The concentrations of SB employed are in the range 1-5 × ...
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    Constituents of plants growing in Qatar part XV. Chemical investigation and pharmacotoxicity of pyrrolizidine alkaloids of moltikiopsis ciliata 

    Rizk, A. M.; Hammouda, F. M.; Ismail, S. I.; Hassan, N. M.; Hosseiny, H. A.; Roeder, E.; Wiedenfeld, H.; Ghaleb, H. A.; Madkour, M. K.... more authors ... less authors ( Taylor & Francis , 1988 , Article)
    Chemical study of the alkaloidal constituents of Moltikiopsis ciliata resulted in the isolation and identification of heliotrine and echinatine, in addition to other minor alkaloids. Pharmacological experiments revealed: ...
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    Constituents of plants growing in Qatar VII an examination of certain plants for anti-inflammatory activity 

    Rizk, A. M.; Williamson, E. M.; Evans, F. J. ( Taylor & Francis , 1985 , Article)
    Six desert plants native to the State of Qatar were successively extracted with hexane, chloroform and ethanol. These extracts were examined for their ability to inhibit aggregation of rabbit blood platelets induced by ...
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    Occurrence of pyrrolizidine alkaloids in Heliotropium bacciferum Forssk. Constituents of plants growing in Qatar XIII 

    Rizk, A. M.; Hammouda, F. M.; Roder, E.; Wiedenfeld, H.; Ismail, S. I.; Hassan, N. M.; Hosseiny, H. A.... more authors ... less authors (1988 , Article)
    N/A.
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    Constituents of plants growing in Qatar 

    Rizk, A. M.; Heiba, H. I.; Ma'ayergi, H. A.; Batanouny, K. H. ( Elsevier , 1986 , Article)
    N/A.

    Constituents of plants growing in qatar V. Constituents of the volatile oil of cymbopogon parkeri 

    A.M., Rizk; Heiba, H.I.; Sandra, P.; Mashaly, M.; Bicchi, C. ( Elsevier , 1983 , Article)
    Analysis of the volatile oil of Cymbopogon parkeri has been carried out by capillary gas chromatography-mass spectrometry. To facilitate identification, prefractionation of the oil by adsorption high-performance liquid ...

    Sesquiterpene lactones from Pulicaria sicula 

    Zdero, C.; Bohlmann, F.; Rizk, A. M. ( Elsevier , 1988 , Article)
    The aerial parts of Pulicaria sicula afforded the known xanthanolides 1-6, the guaianolides 7 and 8 as well as two new ones, the lactone 9 and the corresponding epoxide 10. Furthermore nerylisobutyrate and the thymol ...
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    Constituents of plants growing in Qatar IX. The antispasmodic components of cymbopogon parkeri stapf. Parkeri stapf 

    Rizk, A. M.; Rimpler, H.; Ghaleb, H.; Heiba, H. I. ( Taylor & Francis , 1986 , Article)
    Investigation of the lipid fraction of Cymbopogon parkeri revealed the presence of several active constituents, one of which possesses an antispasmodic activity and was identified as cryptomeridiol. Study of the other ...
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    Amphetamine Selective Electrodes Based on Dibenzo-18-crown-6 and Dibenzo-24-crown-8 Liquid Membranes 

    Hassan, Saad S. M.; Elnemma, Eman M. ( American Chemical Society , 1989 , Article)
    Two novel membrane electrodes highly sensitive and selective for amphetaminium cation are developed and electrochemically evaluated according to IUPAC recommendations. These electrodes Incorporate amphetamine-dibenzo-18-crown-6 ...
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      Rizk, A. M. (9) Nour, E.M. (8) Fayek, M. K. (4) Hammouda, F. M. (4) ... View More
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      Article (48) Conference (1)
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      Qatar (3) Astronomy (2) Computer Hardware & Networks (2) Corrosion (2) ... View More
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      1988 (15) 1989 (13) 1986 (8) 1982 (3) 1985 (3) 1987 (3) 1983 (2) 1981 (1) 1984 (1)
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      2020 - 2024 (25) 2010 - 2019 (17) 2009 - 2009 (7)
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