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Now showing items 11-20 of 21
Multielement Analysis Of Suspended Particulates In Doha (Qatar) Air Before And During The Gulf War
(
Qatar University
, 1994 , Article)
Efforts have been made to study the effect on Qatar atmosphere from the burning of Kuwait oil fields during the Gulf war. Analysis of suspended air particulates was done by X-ray fluorescence technique. Eight elements were ...
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 ...
Thermoluminescence induced by gamma radiation In LiCsSO4 Ferroelastic crystal doped With different heavy metals
(
Qatar University
, 1994 , Article)
Thermoluminescence (TL) glow curves of lithium cesium sulphate ferroelastic crystals LiCsSO4 doped with 0.5% of Os, Tb, Eu and Tl have been studied in the temperature range from room temperature to 300"C. Three peaks are ...
Impulse Breakdown Characteristics In Air In The Presence Of A Local Spark
(
Qatar University
, 1996 , Article)
In this paper, we study the flashover phenomena in air gaps containing floating metallic objects. The effect of a local spark on the impulse breakdown characteristics of a model gap arrangement which simulating a gas ...
A Study Of Atmospheric Transparency Over Qena In Upper Egypt
(
Qatar University
, 1995 , Article)
Atmospheric transparency over Qena/Egypt has been studied for direct solar radiation values . which were calculated from global and diffuse solar radiation measurements . The mean monthly of the instantaneously transparency ...
Integration technique for neutron source standardization inside A cylindrical water tank
(
Qatar University
, 1993 , Article)
This work deals with the evaluation of neutron irradiation facility. Two (Pu-Be) sources and two (Ra-Be) sources are used. Integration technique by a BF3 detector for neutron source standardization is used. The necessary ...
Thermoluminescence (TL) Response Of Gamma-Irradiated Raw Material And The Influence Of Doping By Different Activators
(
Qatar University
, 1994 , Article)
Thermoluminescence of raw materials has been frequently employed to determine the exposure dose as well as effective energy of gamma radiation. In this work, thermoluminescence (TL) properties of cement clinker (C) and its ...
Diffuse Phase Transition In Non-Stoichiometric LiRbSO4 Crystals
(
Qatar University
, 1992 , Article)
The influence of changing the ratio of Li2S04 on the structure transition of (RbxLi1-x)2S04 , LRS crystals, where x ranged from 0.1 to 0. 7, was studied by thermal analysis techniques in the temperature range 300 - 600 K. ...
Global And Ultravoilet Radiation Over Kuwait
(
Qatar University
, 1999 , Article)
The data of six spectral bands of solar radiation over Kuwait were measured locally, during the period of time starting May 1, 1995 until February 5,1998.
Near ultraviolet spectral band (315-380) nm, shows very week ...
Magnetic Studies on High - Tc Bi - Pb- Sr - Ca - Cu - O Ceramics
(
Qatar University
, 1997 , Article)
The superconducting material with a nominal composition BiI 6 Pb0 4 Sr2 Ca2 Cu3 Ox has been recently synthesized and characterized by the authors using the Q- factor method. The Q-factor data reported in this work shows ...