Engineering Journal of Qatar University - [From 1988 TO 2005]: المرسلات الحديثة

السجلات المعروضة 121 -- 140 من 221

    • Simplified Method For Plate Deflection Calculation 

      Al Ansari, Mohammed S. ( Qatar University , 1997 , Article)
      This paper presents a simplified method for the calculation of thin-plate deflections. The method, which deals with uniformly loaded plates, uses the stiffness method to obtain plate deflection equations for specified ...

    • 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 ...

    • Qualitative Assessment Of Bottled Water In The Middle East 

      Ahmad, S; Saleem, Abdul ( Qatar University , 1996 , Article)
      Many brands of bottled water are being produced in the Middle East including the Gulf Cooperation Council (GCC) countries. Over fourteen brands of bottled water could be found in the market of Doha. Use of bottled water ...

    • Three Dimensional Analysis Of Space Imageries 

      Diefallah, M. A. M. ( Qatar University , 1994 , Article)
      Space imageries with their low costs and availability for every one, provide a good opportunity for topographic mapping of unmapped or poorly mapped areas around the world particularly in the developing countries. The ...

    • Examination Of An Oil Separator Pressure Vessel (Case History) 

      Kandeil, A. Y. ( Qatar University , 1991 , Article)

    • Prediction Of Refrigerant Thermodynamic Properties By Equations Of State 

      Moshfeghian, Mahmood Moshfeghian, Mahmood ( Qatar University , 1992 , Article)
      The ability of three equations of state (EOS) for calculating the thermodynamic properties of refrigerants has been studied for 35 pure component refrigerants. Three equations of state studied were the Soave-Redlich-Kwong ...

    • Material Behaviour Under Corrosive Environment — Guide For Material Selection 

      Kandeil, A. Y.; Shawki, G. S. A. ( Qatar University , 1988 , Article)
      In this paper, the behaviour of engineering materials as influenced by fluid velocity, operating temperature, humidity and duration of exposure to chemical and/or electro-chemical action is carefully studied, corrosive ...

    • A Review of Fatigue Testing Machines 

      Shawki, G. S. A. ( Qatar University , 1990 , Article)
      In this paper fatigue testing facilities are first classified in accordance with a number of features which include purpose, type of loading, method of load application and transmittal as well as control system. Owing to ...

    • Stability Analysis Of Digital Pd Control Applied To Flexible Systems 

      Fanni, Mohamed; Al-Salem, N. ( Qatar University , 2002 , Article)
      The work shows that the sampling in a digital PD controller of a flexible system may cause instability, while the continuous PD control system is stable. A procedure is introduced to define the stability regions analytically ...

    • The Onset Of Resonance In Two-Immiscible Fluids Inside A Spinning And Coning Cylinder 

      Selmi, M. ( Qatar University , 1993 , Article)
      Resonance of the motion of two fluids inside a cylinder that spins about its axis and rotates (cones) about an axis that passes through its center of mass is known to occur for low-viscosity fluids (high Reynolds number ...

    • A Spreadsheet Teaching Tool For Analysis Of Pipe Networks 

      El-Bahrawy, Aly Nabih ( Qatar University , 1997 , Article)
      Spreadsheets are used widely in engineering to perform several analysis and design calculations. They are also very attractive as educational tools due to their flexibility and efficiency. This paper demonstrates the use ...

    • Optimum Design Of Concrete Slab Forms 

      Senouci, Ahmed B. ( Qatar University , 1996 , Article)
      This paper presents a design optimization method for concrete slab forms. This procedure was formulated to provide a safe slab form design with minimum cost. The proposed method considers in its design process the cost of ...

    • Investigation of the Fouling Mechanisms in the Heat Exchangers of a Hydrotreater 

      Ibrahim, Hassan Al-haj; Safwat, Ahmad; Hussamy, Nadra ( Qatar University , 2005 , Article)
      The problem of fouling on heat exchanger surfaces has been one of the major unresolved problems of the hydrotreatment unit at the Homs oil refinery in Syria. In this unit, a feed stream of straight-run naphtha is preheated ...

    • Measurement Of Thermal Conductivity Of Thermally Low-Conducting Materials 

      Selmi, M. ( Qatar University , 1995 , Article)
      The thermal conductivity of a building material is a necessary parameter in estimating the cooling load of a building. Cooling load estimates are quite important in selecting building materials especially in hot-climate ...

    • Estimates of Potential Evapotranspiration Over The State of Qatar 

      Bazaraa, A. S. ( Qatar University , 1989 , Article)
      Several methods for the estimation of potential evapotranspiration are reported in the literature covering a wide variation in the complexity of calculation and nature of climatic data required. Five of the more commonly ...

    • Analysis Of The Coupling Gap Between Microstrip Antennas 

      Hindy, Moataza A.; Mitkees, Abdela Aziz A. ( Qatar University , 1997 , Article)
      The accurate and efficient Galerkin's method was developed in the spectral domain for analyzing gap discontinuities in patch antenna array. Using new current distribution the problem is solved using full wave approach ...

    • New Algorithms For Digital Analysis Of Power Intensity Of Non Stationary Signals 

      Al Faouri, M. F.; Al Zoubi, A. Y. ( Qatar University , 1998 , Article)
      Discrete and continues time-frequency algorithms of the power intensity of non-stationary signals are proposed. Results show that the power intensity waveform analysis performed well in both discrete and continuous ...

    • Recent Advances In Coring And Core Analysis Technology New Technique To Improve Reservoir Evaluation 

      Al Saddique, M.A; Hamada, G. M.; Al-Awad, M. N. ( Qatar University , 2000 , Article)
      The main goal of core analysis is to reduce uncertainty in reservoir evaluation by providing data representative of the reservoir at in situ conditions. Basic core analysis measurements are unchanged, but advances in core ...

    • Operation And Maintenance Of Sewage Treatment Plant In Doha 

      Shadid, Fawzi T.; Ahmed, Shamim ( Qatar University , 1992 , Article)
      The sewage treatment plant in Doha-South uses primary, secondary and tertiary treatment units for treating predominantly domestic sewage. The treated effluent, is used in irrigating agricultural farms for growing animal ...

    • Random Distributed Algorithms For Clock Synchronization 

      Nakai, Shoichiro ( Qatar University , 1992 , Article)
      This paper proposes clock synchronization algorithms based on the idea in which randomly chosen m out of the total N processors cooperate to perform the clock adjustment of all processors in a distributed system. Selection ...