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A histological study on the neuroendocrinal system of a coleopterous insect, cy3ister tripunctatus africanus cast.
(
Qatar University
, 1983 , Article)
Four different types of neurosecretory cells were identified in the brain of the adult water beetle, Cybister tripunctatus africanus Cast. These cells were identified into A, B, C, & D types according to their morphological ...
Subsurface geothermal investigation in the nile delta, egypt.
(
Qatar University
, 1983 , Article)
The Nile Delta area is geothermally studied to define the behaviour of geothermal gradient in different wells and to determine the distribution of heat in some interesting rock formations. The geothermal investigation of ...
Apical dominance in vicia faba l.
(
Qatar University
, 1983 , Article)
A side-effect of plant surgery was an interference with apical dominance. From the results of three experiments involving plant surgery, decapitation and the usage of "C-IAA, it appeared that the movement of the apically ...
Developmental anatomy of the central nervous system of the cotton leaf worm, spodoptera littoralis boisd.
(
Qatar University
, 1983 , Article)
The central nervous system, C. N. S., of the cotton leaf worm, Spodoptera littoralis (B.) develops from a median row of embryonic neuroblasts which divide repeatedly to form a double ganglionic chain. The two chains fuse ...
Contribution To The Sedimentology Of The Bahariya Formation Of Gebel El-Dist, Bahariya Oasis, Western Desert, Egypt
(
Qatar University
, 1983 , Article)
Combined microscopic, grain-size and heavy-mineral analyses were carried out on the Bahariya Formation at Gebel El-Dist (type section), Bahariya Oasis. These studies revealed that the formation is composed of moderately ...
Neutron Diffraction And Mossbauer Effect Study On A Mixed Rare Earth Garnet
(
Qatar University
, 1983 , Article)
A powder sample of Y^YbFesO,; was prepared using the ceramic technique. X-ray diffraction pattern showed a single phase of the garnet type structure with a lattice constant 12.323 A". Specific heat for this composition was ...
On The Existence And Uniqueness Of Solutions Of A Functional Differential Equation
(
Qatar University
, 1983 , Article)
On Dirichlet Problem With Singular Integral Boundary Condition
(
Qatar University
, 1983 , Article)
In this paper a Dirichlet problem, with singular integral condition, is studied. It is shown that such problem can be reduced to a regular equation which allows us to construct the solution.
Some Aspects Of The Autecology Of Panicum Turgidum Forsk
(
Qatar University
, 1983 , Article)
The germination of Panicum turgidum seeds was tested under different conditions. They showed ability to germinate under a range of temperatures from 25-42°C. The maximum percentage of germination was 45%, at 30°C. The ...
Subsurface Geothermal Study In The Central Part Of The Northern Western Desert, Egypt
(
Qatar University
, 1983 , Article)
Geothennal investigation of the studied area was carried out using the bottom hole temperatures recorded in deep wells drilled for petroleum exploration. The study revealed interesting data regarding the geothennal gradient ...