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السجلات المعروضة 211 -- 220 من 451
Sponges (Porifera) In Submarine Caves
(
Qatar University
, 1999 , Article)
Sponges (phylum Porifera) have the most simple and probably the most ancient body plan of the multicellular animals. They are, however, very successful in most benthic ecosystems. They are dominant in submarine caves, where ...
Synthesis And Spectroscopic Properties Of Some Mixed-Ligand Complexes Of Nickel (II), Copper (II), Zinc (II) And Palladium (II) With Biologically Active Nitrogen-Sulphur Containing Molecules
(
Qatar University
, 1990 , Article)
The reaction of the biologically active complexes, chloro-2-acetylpyridinehyd-razinecarbothiopiperidinamide metal (II) and chloro-2-acetylpyridinecar-bothiomorpholinamide metal (11),^, (M=Ni (II), Cu (II), Zn (II) and Pd ...
Tail Regeneration after Autotomy in the Geckonid Lizard Bunopus Tuberculatus
(
Qatar University
, 1993 , Article)
Tail regeneration in the geckonid lizard, Banopus tuberculatus was morphologically and histologically studied after induced atutomy. Seventy percent of the tail of each animal, by length, was removed by autotomy. Regeneration ...
Human Resources Development and Institutional Arrangements for Managing Coastal Resources and Environments in the UAE, From Concept to Practice
(
Qatar University
, 1999 , Article)
The coastal area of UAE contains some of the world's richest ecosystems including extensive oil reservoirs, coral reefs and mangrove forests. UAE in fact faces an acute shortage of personnel having the necessary knowledge, ...
Biochemical Composition Of The Squid (Loligo Vulgaris) (Mollusca) From The Mediterranean Waters Off Alexandria, Egypt
(
Qatar University
, 1996 , Article)
The seasonal biochemical variations of the squid Loligo vulgaris from the Egyptian Mediterranean waters off Alexandria were studied during November 1989 through August 1990. Water, lipid, protein and ash contents were ...
Numerical Abundance And Species Diversity Of Surface Zooplankton In The Coastal Waters Of United Arab Emirates On The Arabian Gulf A Preliminary Study
(
Qatar University
, 1999 , Article)
Surface zooplankton of the coastal waters of the United Arab Emirates was studied bimonthly during the period September 1997 to July 1998. Species diversity, numerical abundance and seasonal dynamics were analyzed , at six ...
Synthesis And Reactivity Of Substituted Chromones
(
Qatar University
, 1992 , Article)
The synthesis of 2-methyl-and 2-Styryl-6-bromo-7, 8-benzochromone and 2, 6-Dimethylchromone and their reactivity towards cyclo-addition reaction under Diels-Alder conditions and towards nucleophilic and electrophilic ...
New Contributions To The Geology, Geochemistry And Tectonic Setting Of The Aswan Granites, Southern Egypt
(
Qatar University
, 1990 , Article)
The Aswan granitic rocks occupy a region in southern Egypt between the stable Archaean craton of the south Western Desert and the less stable Pan-African belt of the south Eastern Desert. They include light-grey medium ...
Lithofacies and depositional environments Of the lower jurassic sediments In central Saudi Arabia
(
Qatar University
, 1999 , Article)
The lithofacies, microfacies and sedimentary environments of the surface Lower. Jurassic sediments in central Saudi Arabia are studied. The Lower Jurassic is represented by the marine clastic Marrat Frormation which is ...
On an inverse scattering problem with a discontinuous coefficient On the whole line
(
Qatar University
, 1994 , Article)
This paper is devoted to study the inverse scattering problem of a generalized Sturm-Liouville equation on the whole line.The solutions of the considered problem and their asymptotic behaviour are presented.The expansion ...