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Optical Properties Of Oxidated Blown Asphalt Films
(
Qatar University
, 1996 , Article)
Films of purified blown asphalt of high grades of oil and the accompanied adulterated particles derived from its manufacturing process, that is, it was purified 98%. This study focused on optical properties in the wavelength ...
Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
(
Qatar University
, 1995 , Article)
Laser - induced diffusion of various dopant elements into intransic germanium based on the dipping of Ge into dopant solution, have been used to produce doped ge layer using yag pulse laser with 300us duration ( A, = 1.664(1 ...
Design And Implementation Of A Microprocessor Controlled Digital Filter
(
Qatar University
, 1991 , Article)
The construction and implementation of a microprocessor controlled real time recursive digital filter have been given. The system designed could also be applied to a variable coefficients system such as ADAPTIVE FILTER and ...
Effects of the electric field and gamma Radiation on the optical properties of Modified low density polyethylene
(
Qatar University
, 1997 , Article)
The effect of electric field and gamma radiation on the optical properties of low density polyethylene LDPE grade CD 0230 have been studied. The samples were irradiated at gamma doses of 0-100 Mrad and varying electric ...
y - Irradiation Effect On The Ferroelastic High Temperature Phase In LiKSO4 Crystals
(
Qatar University
, 1992 , Article)
The effect of •y -irradiation on the thermodynamic parameters of LiKSC>4 single crystals, in the high temperature range 300-1000 K, is investigated. The results show that T,; as well as Cp decrease with dose rate. However, ...
Characterization of Polymers in Dilute Solutions
(
Qatar University
, 1997 , Article)
Basic moleculer characterisitics of polymers are: molecular architecture, molecular weight and size, and their distributions. All these characterisitics are derived from measurements of very dilute solutions. Methods of ...
Measurements Of Radon Permeability Through Some Membranes
(
Qatar University
, 1994 , Article)
The diffusion of 222Rn through different types of membranes has been studied by an equilibrium method using a Si surface barrier a-detector with a resolution of 14 keV FWHM for ^'Am. The permeability constant for Aluminized ...
Effects of electric and magnetic fields on the energy levels of a hydrogenic impurity in GaAs/Gal-xAl x As heterjunction
(
Qatar University
, 1997 , Article)
Variational method within the effective — mass approximation is used to calculate the shallow impurities states in GaAs / Gai_xAl^As heteroj unctions. Modified Fang-Howard wavefunction is used as the trial wavefunction. ...
A comparative study of the mechanical properties of low Density polyethylene (ldpe)
(
Qatar University
, 1997 , Article)
Mechanical properties of engineering polymers which are the most important properties for design and construction purposes are diverse. This has been proved by investigation tensile properties of different grades of LDPE ...
Calculation Of Mass Yield Distributions In Fission Induced By High Energy Protons
(
Qatar University
, 1991 , Article)
An analytical expression is obtained for the mass-yield distribution in fission induced by high-energy protons, using a two-step model. In the first step, the incident proton penetrates the target nucleus, knocking out ...