Browsing by Author "عبد المعز, محمد سمير"
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The Complexation of Lanthanides by Azo-B-Diketones Stability Constants
Abdel Moez, M. S.; El-Anani, G. A.; Ramadan, A. A.; El-Shetary, B. A.; عبد المعز, محمد سمير; العناني, جابر; رمضان, عاطف; الشطيري, بشير... more authors ... less authors ( Qatar University , 1982 , Article)The stability constants of the complexes between the trivalent lanthanide series of cations and series of azo-B-diketone ligands are reported. The measurements were conducted at 30°C and zero ionic strength (free KN03), ... -
Stability Constants of Lanthanide Complexes with some Structurally Related Organic Ligands
Abdel Moez, M. S.; Al-Anany, G.A.; Ramadan, A.A.; Zahra, A.M.; عبد المعز, محمد سمير; العناني, جابر; رمضان, عاطف; زهرة, أحمد... more authors ... less authors ( Qatar University , 1982 , Article)The stability constants of the complexes formed between trivalent lanthanide ions and related carboxyphenylhydrazo-B-diketones ligands are repoted, at 30 °C and at constant ionic strength (0.1 KN03), in 75 % dioxane-water. ... -
Studies on Soil Cements : 2 — Physicochemical Properties of the Hardened Soil Cement Pastes.
Abo El Enein, A.; Abdel-Moez, M.S.; Mikhail, R. Sh.; Hekal, E.E.; أبو العينين, صلاح عبد الغني; عبد المعز, محمد سمير; ميخائيل, رؤوف شاكر; هيكل, عيسى السيد... more authors ... less authors ( Qatar University , 1982 , Article)Various hardened soil-cement pastes were prepared from dry mixtures of montmorillonite clay and portland cement clinker by using different W/C ratios of 0.20, 40, 0.60 and 0.80 and cured in air for various ages. Compressive ... -
Studies on Soil Cements: 1 - Role of Hydrated Lime and Dolomitic Monohydrate in Montmorillonite Stabilization
Abo El Enein, A.; Abdel-Moez, M.S.; Mikhail, R. Sh.; Hekal, E.E.; أبو العينين, صلاح عبد الغني; عبد المعز, محمد سمير; ميخائيل, رؤوف شاكر; هيكل, عيسى السيد... more authors ... less authors ( Qatar University , 1982 , Article)Montmorillonite clay was stabilized by either hydrated lime or the dolomitic monohydrate (Ca(OH)2. MgO) during suspension hydration at 25 and 60°C for 45 days. The distinct phases produced from the hydration of each ...