Now showing items 50-69 of 221

    • Design Of An E-Mail System For Personal Computers 

      El Hadidi, M. T.; Mohammad, Sultan A.; Metwally, Mostafa S. ( Qatar University , 1991 , Article)
      The design of an Electronic-Mail system that can operate in a personal computer (PC) environment is presented. The underlying philosophy is based on a centralized mailbox approach, wherein a dedicated SERVER stores the ...
    • Design of Smoke Generator for Flow Visualisation 

      Shahin, M. M ( Qatar University , 1988 , Article)
      Described in this paper is an alternative method for smoke generation for flow visualisation in low speed (subsonic) wind tunnel work. This method makes use of the smoke generating characteristics of Ammonia and Sulphur ...
    • Designing Air Intake Ducts for High Speed Flight 

      Kamal, W. A.; Anwar, Anwar E. M. ( Qatar University , 1988 , Article)
      A proven duct flow model is used to examine the influence of the intake duct geometric and inlet flow parameters on the pressure recovery performance of intake ducts for high speed flight. The geometric parameters include: ...
    • Determination Of Petrophysical And Mechanical Properties Interrelationship For Simulated Sands 

      Al Homadhi, E. S.; Hamada, G.M. ( Qatar University , 2003 , Article)
      In the evaluation of a petroleum reserve, it is necessary to determine accurately certain petrophysical properties such as porosity and permeability of the reservoir rocks. These properties are affected by the relevant ...
    • Determination Of Rheological Properties Of Polymer Solutions In Sandpacks 

      Hamada, G. M ( Qatar University , 1992 , Article)
      There is a correlation between mobility ratio and oil recovery by water displacement in homogeneous and heterogeneous reservoirs. Because of this correlation, it is essential to develop a mobility control process which ...
    • Determination of Sara constituents of southwestern Nigerian tars sands and their Physical properties 

      Bello, O. O.; Macaulay, S. R. A.; Adebiyi, F. M.; Sonibare, J. A. ( Qatar University , 2005 , Article)
      Utilization potentials of Nigerian massive crude bitumen and associated heavy oil represent a promising source of security and economic benefits for the nation. However, production and processing technology of tar sands ...
    • Developing Binary Interaction Parameters For Equations Of State 

      Moshfeghian, Mahmood; Maddox, R. N. ( Qatar University , 1991 , Article)
      Binary interaction parameters are routinely developed to improve the accuracy of equation of state estimations for binary mixtures. For a given data set, the numerical value of the vapor-liquid equilibrium constant varies ...
    • Differential Amplitude Phase Shift Keying (Dapsk): A New Modulation Method For A Turbo Code In Digital Radio Broadcasting 

      Sayhood, K. H.; Nan, Wu Le ( Qatar University , 2003 , Article)
      The multilevel modulation techniques of M–Differential Amplitude Phase Shift Keying (DAPSK) have been proposed in combination with Turbo code scheme for digital radio broadcasting bands below 30 MHz radio channel. Comparison ...
    • The Diffusion Diaphragm Cell: A State-Of-The-Art-Review 

      Vavanellos, T. D. ( Qatar University , 1990 , Article)
      The diffusion diaphragm cell is considered one of the simplest and most reliable devices for measuring liquid-phase diffusivities. The design of such diaphragm cells has passed through many stages of refinement over the ...
    • Drag On Non-Spherical Particles In Non-Newtonian Fluids 

      Farag, Hassan A.; El-Manaa, Nawaf H. ( Qatar University , 1996 , Article)
      The drag coefficient (CD ) was determined for three different non-spherical particles (cubes, rectangles and cylinders) of different sizes falling in two different non-Newtonian fluids (glycerol and polymer - paraffin ...
    • Dynamic Analysis Of A Novel Manpowered Transportation Vehicle With High Mechanical Efficiency 

      Abdel Rahman, T. M; Al-Salem, Nabeel A. ( Qatar University , 2002 , Article)
      This paper evaluates the dynamics of a novel manpowered transportation vehicle. The vehicle has a novel mechanism that maximizes the mechanical input work and utilizes the weight of the rider for propulsion. The rider ...
    • Economic Analysis of Corrosion Control In Petroleum Refineries 

      Salem, A. B. ( Qatar University , 1988 , Article)
      Economic analysis of corrosion problems and their prevention or control was found to gain very little importance in the last 10 years according to the published work surveyed. This article surveys the most important work ...
    • Economic And Thermal Performance Of Thermostone In Qatar 

      Selmi, M.; Tag, Ismail A. ( Qatar University , 1996 , Article)
      This paper is concerned with the performance characteristics of thermostone as a building material, and their comparison with those of hollow concrete blocks. Carrier Advanced Load Program (E20-II) was used to estimate the ...
    • Educational Performance of Students In A New College Of Engineering: A Computer-Aided Study 

      Sheirah, M. A.; Shawki, G.S.A. ( Qatar University , 1989 , Article)
      A data-base computer package is herein developed to provide an effective tool lor llie studv. evaluation and rectification of tile academic performance of university students. As a test case, the newly established Faculty ...
    • Effect Of Aspect Ratio On Torsional Capacity Of High-Strength Plain Concrete Deep Beams 

      Samman, Tamim A.; Radain, Talal A. ( Qatar University , 1993 , Article)
      Twenty high-strength plain concrete deep beams were tested under torsion. The variables were concrete strength and depth/width (aspect) ratio. Concrete strengths of 51.01, 58.53, 76.60 and 83.66 MPa and depth/width (aspect) ...
    • Effect Of Drilling Fluids Contaminations On Saudi Reservoir Rock Wettability 

      El Sayed, Abdel Alim H.; Al-Awad, Mosaed N. J.; Al-Sadiqqi, M. A.; Al-Blehed, M. S. ( Qatar University , 1998 , Article)
      Wettability is a key parameter that affects the petrophysical properties of reservoir rocks. Mud nitrate during drilling pay zone causes a significant change in rock wettability that will affect the oil production and ...
    • Effect Of Field Environmental Exposure Conditions On The Properties Of Hardened Concrete 

      Al Khaja, Waheeb A.; Al-Bastaki, N. M.; El-Haddad, M. H.; Mohamed, A. S.; Padmore, P. ( Qatar University , 1993 , Article)
      The effects of harsh field environmental exposure conditions on compressive, tensile and flexural strengths and durability aspects of concrete such as chloride penetration, sulphate attack and carbonation were investigated ...
    • The Effect Of Initial Temperature On Burning Velocity Of Methane, Propane, Lpg And Iso Butane - Air Mixtures 

      Hamid, M. N.; Said, Arkan F. ( Qatar University , 2001 , Article)
      In present work, the burning velocity of a fuel - air mixtures varies with equivalence ratio, temperature and number of carbon atoms. Laminar flame speed have been measured experimentally inside a tube using the optical ...
    • Effect Of Production Induced Stresses On Reservoir Productivity 

      Al Awad, Musaed N. J. ( Qatar University , 2001 , Article)
      The importance of permeability sensitivity to the changes in pore pressure drop or effective overburden stress increase has been examined at laboratory using two types of rocks, sandstone and limestone. Whereas the ...
    • Effect Of Sand Blasting On Soda Lime Glass Properties 

      Bousbaa, C.; Madjoubi, M. A.; Hamidouche, Z.; Bouaouadja, N. ( Qatar University , 2003 , Article)
      The present work is based on a simulation in laboratory of the erosion of a soda lime glass caused by sand blasting during sandstorms. It deals with the effects of sand blasting duration (from 0 to 60 min) and impact angle ...