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Now showing items 201-205 of 205
Studies on Soil Cements : 2 — Physicochemical Properties of the Hardened Soil Cement Pastes.
(
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 ...
Blood Gases of some Skink Lizards
(
Qatar University
, 1982 , Article)
(1) Po2 and Pco2 of arterial and venous blood are studied in three skink lizards:
the bean skink, Mabui quinquetaeniata, inhabiting the cultivated areas, and
the two burrowing desert lizards; the ocellated skink, Chalcides ...
The Complexation of Lanthanides by Azo-B-Diketones Stability Constants
(
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), ...
Neutron Diffraction and Mossbauer Effect Study of a Cobalt Substituted Zinc Ferrite
(
Qatar University
, 1982 , Article)
The mixed cubic ferrite Zno.g5 €00.15 Fez 04 is studied by neutron diffraction and Mossbauer effect techniques at the temperature range 4.2 - 293 °K. The obtained spectra by both methods at low temperature show a long range ...
17- Hydroxylation Of Progesterone By Cunninghamella Echinulata On A Laboratory Fermentor Scale
(
Qatar University
, 1985 , Article)
The mircrobiological transformation of progesterone by a local isolate of Cunninghamella echiiiulata using a laboratory fermentor was studied. Progresterone (10-50 g/1) wetted by Tween 80 was added to 48-hour old culture ...