Detailed geomorphological study of the Nagada region, west of-the Nile enables us to better understand the main landfonns in this part of Upper Egypt. Six geomorphic features are recognized including: the Thebaid plateau; ...

The shrimp fishery in Qatar is carried out by artisanal crafts, operating from Doha and Al Khor on the East coast. The fishing is restricted to the 2-6 Fm depth range and Penaeus semisulcatus forms about 95 % of the shrimp ...

The influences of these different vegetable plant hosts on the biological response of Brevicoryne brassicae (L) and Aphis gossypii (Glover) were studied. The results obtained for B. brassicae (L) indicated that the lowest ...

The study was based on the data available from Fishery Resources Survey in the Gulf and Gulf of Oman, conducted by F.A.O., between 1975 and 1979 and the samplings of the fish production in Qatar during 1980/81. The survey ...

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 ...

The origin and environment of deposition of the Alamein Dolomite in the El-Razzak Oil Field have been investigated by means of petrographic, chemical and X-ray analysis. The studied rocks are composed of dolomite with ...

In this paper a generalized form of Airy's function has been estimated and an asymptotic expansion for one of its types is obtained. Furthermore, an improved formula could be induced to acquire the asymptotic expansion of ...

Mossbauer spectra have been measured for the hydrated blast-furnace slag cement and Portland cement pastes at different times of hydration of 1. 3. 7. 28 and 90 days. The spectra showed the existence of iron atoms, Fe3 (T) ...