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Ecological Studies On The Bottom Fauna Of Lake Manala, Egypt
(
Qatar University
, 1990 , Article)
An ecological survey has been conducted for the benthic Community in Lake Manzala during May and June, 1985. The diversity and distribution of organisms are largely determined by salinity. Mean abundance of benthic fauna ...
Nitrogen fixation in polluted sea water of Alexandria coast, Egypt.
(
Qatar University
, 1990 , Article)
The inshore area of the Mediterranean water, west of Alexandria, Egypt, is subjected to different types of pollutants. Nitrogen fixation rate was studied in this area in relation to some environmental factors such as pH, ...
Phytochemical Studies On The Marine Algae Of Qatar, Arabian Gulf
(
Qatar University
, 1990 , Article)
The most dominant twenty three algal species representing the main three groups of benthic macroalgae, Chlorophyceae, Phaeophyceae and Rhodophyceae were collected from the coastal zones of the Qatar peninsula. These algae ...
Lineament Analysis Of Qatar Peninsula Based On Landsat Imagery
(
Qatar University
, 1990 , Article)
Photo-interpretation of Landsat MSS images of Qatar Peninsula reveals several surface lineaments of different types, extentions and trends. Some of these photo-lineaments are of structural nature while others represent ...
A Class Of Functions Stronger Than M-Precontinuity, Preirresolute And A-Functions
(
Qatar University
, 1990 , Article)
We propose a definition for a new class of functions that may be stronger than the previous types. Some of its characterizations, connections with known ones and the effect of them on some topological spaces are studied .
Studies On Catch Rates Of Bottom Trawlers In Qatar Waters, Arabian Gulf
(
Qatar University
, 1990 , Article)
Data pertaining to catch, effort, time, space, landing, commercial value, by-catch and some environmental parameters covering the period from 1983 to 1988 were used in this regard. The results conformed that; the CPUE ...
Nannobiostrat1graphy Of The Late Cretaceous Paleocene Succession In Esh El-Mallaha Range, Eastern Desert, Egypt
(
Qatar University
, 1990 , Article)
This paper emphasis the biostratigraphic significance of thirty nannofossil species recorded from the Maestrichtian - Paleocene succession in Esh El-Mellaha Range, Eastern Desert, Egypt. These species participated in making ...
Collineations Of Polar Spaces
(
Qatar University
, 1990 , Article)
In this paper we consider general embeddable polar spaces with Witt index at least three.
If π : S( ξ) —> S( ξ’) be a thick collineation between polar spaces with i( ξ) =i( ξ’) ≥3. Then there exists a place Ø: k—> k' U ...
Annealing Behaviour, Tcr Values And Defect Density For "Cold-Condensed" Silver Films
(
Qatar University
, 1990 , Article)
Thin silver films were deposited under vacuum of 10^ -6 Torr by thermal evaporation onto cooled glass substrates kept at low temperatures. Pure argon gas prevailed as residual gas. Annealing behaviour of the electrical ...
Geology, Petrography, Geochemistry And Petrogenesis Of The Egyptian Younger Granites
(
Qatar University
, 1990 , Article)
One hundred and thirty nine new chemical analyses of major and trace elements for 26 plutons and masses pertaining to the Egyptian Younger Granites are presented together with the chemical analyses of 13 biotites, 32 ...