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Now showing items 141-150 of 205
Functions Near Of Na-Continuity
(
Qatar University
, 1989 , Article)
In 1986, the concept of Na-continuity was initiated by Chae et al., this leads us to introduce two classes of functions, namely strongly Na-continuity and weakly Na-continuity. We characterize these new types. Several ...
A New Liquid Membrane Electrode For Selective Determination Of Caffeine
(
Qatar University
, 1984 , Article)
A new liquid membrane electrode for caffeine prepared from a solution of caffeine-picrylsulfonate ion-pair complex in n-octanol is developed. It exhibits Nernstian response in the range of 10'2 to lO^M caffeine with a ...
On a mixed boundary value problem for elliptic equations
(
Qatar University
, 1988 , Article)
In this work, a general form of linear and quasilinear elliptic equations is considered. In the presence of boundary singularities, some estimations for the error, according to the net method, are obtained.
Water Conditions And Proline Content In Shade And Sun Plants
(
Qatar University
, 1984 , Article)
Different parameters of the water conditions (Water content, water saturation deficit, osmotic pressure of the cell sap and partial osmotic pressure due to sugars), chlorophyll and proline contents were investigated in sun ...
Blood Gases Of The Water Snake, Natrix Tesselluta, And The Desert Snake, Eryx Colubrinus
(
Qatar University
, 1983 , Article)
1. This comparative study examines 0^ dissociation curves of blood of two colobrine snakes: an aquatic snake, Natrix tesselluta, and a desert snake, Eryx colubrinus.
2. In the case of the whole blood of the aquatic snake, ...
Selectivity Coefficient Of Wire Basket Traps For Tilapia Nilotica
(
Qatar University
, 1984 , Article)
Most methods of estimating growth and mortality rates require samples representative of the population with respect to size of one or more age groups. There is no fishing gear that exhibits equal selectivity towards fish ...
Aeromagnetic Geophysical Investigation In El-Faiyum District, Western Desert, Egypt
(
Qatar University
, 1985 , Article)
The present paper deals with the interpretation of the aeromagnetic survey executed over the Faiyum area. Western Desert, Egypt. Qualitative as well as quantitative interpretation of the aeromagnetic data were carried out ...
Nomograms For Interpreting Gravity Anomalies Above A Finite Horizontal Cylinder
(
Qatar University
, 1985 , Article)
The present study gives a new method for solving the inverse problem of the gravitational anomalies related to a finite horizontal cylinder, by the use of the downward continuation method. Master curves have been obtained ...
Petrophysical Studies For Some Lower Cretaceous Formations, Western Desert, Egypt
(
Qatar University
, 1988 , Article)
The Kharita, the Dahab and the Alamein Formations are representing the upper part of the Lower Cretaceous rock sequence in the northern part of the Egyptain Western Desert. Some core samples have been obtained from these ...
The effect of doping crystals of tgs with some di- and trivalent ions on its: (i) dielectric constant and a.c. Conductivity
(
Qatar University
, 1987 , Article)
The problem of the existence of a new ferroelectric phase transition at low temperatures in TGS crystals is discussed. The influence of some inorganic divalent and trivalent ions presented in the lattice of TGS on dielectric ...