Search
Now showing items 31-40 of 651
Indecomposable Representations Of Order Of E6
(
Qatar University
, 1985 , Article)
The extended Dynkin diagram
is a valued graph. We are going to construct a Baechstrom order A associateed to Eg. We prove, by constructions, that the order A of infinite lattice-type but can be listed (tame-type), i.e., ...
Translation - invariant Positive-definite Generalized Kernels of Infinite Number of Variables
(
Qatar University
, 1981 , Article)
In the theory of spectral analysis of positive-definite j<.ernels, there exist well-developed
methods based on the ideas of Krein connected with the construction of a Hilbert space
by means of a kernel [ 1, 11]. In the ...
Stratigraphy And Petrology Of The Eocene Rocks At Maghagha (East And West), Nile Valley, Egypt
(
Qatar University
, 1985 , Article)
Combined paleontological and petrological studies on the Eocene rocks at Maghagha revealed that the succession belongs to one biostratigraphic zone; the Numrnulites gizehensis gizehensis zone. Nummulites striatus was ...
Mesozoic Igneous Activity In Egypt
(
Qatar University
, 1986 , Article)
A geochronological sequence of the main phases of igneous activity in Egypt during the Mesozoic is presented in this paper. This is essentially based on scrutinized isotopic age data. New K / Ar ages are also included.
Three ...
A New Tetrafluoroborate Liquid Membrane Electrode For Selective Determination Of Boron
(
Qatar University
, 1986 , Article)
The construction and performance characteristics of a new liquid membrane electrode selective for BF^ion are herein described. The electrode incorporates nitron-tetrafluoroborate ion pair complex in nitrobenzene as a liquid ...
By-Catch Of Commercial Bottom Trawl Fishery From Qatar Waters, Arabian Gulf
(
Qatar University
, 1989 , Article)
The by-catch of the bottom trawl fishery from Qatar water, Arabian Gulf was analysed during the year (1987) on bimonthly basis. It was estimated that 496-635 tons were discarded as by-catch which included a lot of commercialy ...
Middle-Upper Devonian And Lower Carboniferous Miospore Assemblages From Western Desert Of Egypt
(
Qatar University
, 1985 , Article)
Important morphological features of some spore assemblages from Middle-Upper Devonian and Lower Carboniferous of Western Desert of Egypt are described. Comparing the present assemblages with those obtained from other ...
Influence Of Surface Finish Parameters On Corrosion Of Zinc
(
Qatar University
, 1989 , Article)
The effect of surface parameters on corrosion behaviour of pure zinc in sodium sulphate solution was investigated. Surface parameters were determined using a Talysurf surface analyzer, and corrosion testing was performed ...
Pyrrolizidine Alkaloids From Senecio Aegyptius L.
(
Qatar University
, 1988 , Article)
Investigation of the alkaloidal constituents of Senecio aegyptius L. resulted in the isolation and identification of senecionine, dehydrosenkirkine and probably an isomer of seneciphylline. TLC, HPLC and GLC showed the ...
Algal Nitrogen Fixation In The Northwestern Part Of The Arabian Gulf
(
Qatar University
, 1988 , Article)
Nitrogen fixation and cell counts of blue-green algae and diatoms in the northwestern area of the Arabian Gulf were assayed during the (period, 7-20 November, 1984. Spatial variations indicated that the maximum rate of ...