تصفح Engineering Journal of Qatar University - [From 1988 TO 2005] حسب تاريخ النشر
السجلات المعروضة 61 -- 80 من 221
-
Developing Binary Interaction Parameters For Equations Of State
( 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 ... -
Software For On-Line Monitoring Of E10-B Telephone Exchange
( Qatar University , 1991 , Article)The proposed software aims at enhancing the monitoring of the E10-B telephone exchange. It combines functions normally performed by two dedicated hardware devices and facilitates access to detailed maintenance information ... -
Experimental Investigation Of The Role Of Stabilizers In The Enhancement Of Automatic Voltage Regulators Performance
( Qatar University , 1991 , Article)In electrical power systems, dynamic stability problems may be solved through the application of power system stabilizers (PSS), which improve the performance of the main automatic voltage regulators (AVR's) of the synchronous ... -
Solidification Of Steel Billets In Continuous Casting
( Qatar University , 1991 , Article)For practical operation, it is necessary to know how the solidification of liquid steel progresses i.e. when and where a strand has completely solidified. Decisions on, the casting speed, the spray water flow rates and ... -
Ultrasonic C-Scan Inspection Of Composite Materials
( Qatar University , 1992 , Article)Ultrasonic technique using an automated C-scan has been established as the primary inspection method for composite materials. In this paper, the principles of ultrasonic inspection, the type of defects that may be generated ... -
Unsteady State Two Phase Flow Pressure Drop Calculations
( Qatar University , 1992 , Article)A method is presented to calculate unsteady state two phase flow in a gas-liquid line based on a quasi-steady state approach. A computer program for numerical solution of this method was prepared. Results of calculations ... -
Ultrasonic Pulse Velocity Versus Strength For Concrete In Qatar
( Qatar University , 1992 , Article)Compressive strength of concrete is widely accepted as a characteristic property indicating and representing its quality. The accuracy of both ultrasonic and mechanical strength is discussed and the advantages of ultrasonic ... -
Utilization Of The Desired Machined Surface Roughness Number As A Criterion For Cutting Tool Replacement Strategy
( Qatar University , 1992 , Article)Current research in metal removal processes does not provide predictive relationships vitally needed for the selection of machining conditions or specifying limitations on the cutting tool and work material responses. ... -
Determination Of Rheological Properties Of Polymer Solutions In Sandpacks
( 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 ... -
A Solar Pond For Air Conditioning A Small Family House In Qatar
( Qatar University , 1992 , Article)The concept of using a solar pond to provide air conditioning for a typical small family Qatari house is developed. Though the idea seems appealing for a number of reasons, the design study shows it to he technically ... -
Convection In A Rotating Fluid Over A Sloping Bottom, With Application To The Arabian Gulf
( Qatar University , 1992 , Article)Convective motions over a sloping bottom driven by evaporation and freshening are investigated by integrating the complete momentum and mass conservation equations. The problem is posed as an initial value problem in a ... -
Accelerating The Convergence Of Cubic Interpolation Method Using Concurrent Algorithm Based On The Transputer Technology
( Qatar University , 1992 , Article)This paper describes a concurrent method to speed up the convergence of the QIOM (Cubic Interpolation Optimization Method) to obtain the global minima for any nonlinear continuous function. The QIOM is a naturally slow, ... -
Prediction Of Refrigerant Thermodynamic Properties By Equations Of State
( 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 ... -
Potential Use Of Carbide Lime Waste As An Alternative Material To Conventional Hydrated Lime Of Cement-Lime Mortars
( Qatar University , 1992 , Article)The present study aimed at the possibility of using the carbide lime waste as an alternative material to the conventional lime used for cement-lime mortar. The waste is a by-product obtained in the generation of acetylene ... -
Operation And Maintenance Of Sewage Treatment Plant In Doha
( 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
( 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 ... -
Evaluation Of Corrosion Resistance Of A Duplex Stainless Steel "Ferralium" In Dead Sea Brine
( Qatar University , 1992 , Article)Corrosion behavior of Ferralium Alloy 255 during service in the environment of concentrated Dead Sea brine has been investigated. It was found that, the corrosion attack is intergranular and exists only in the weld heat ... -
Three Dimensional Analysis Of Skeletal Structures Considering Cracking
( Qatar University , 1992 , Article)A three dimensional computer model has been developed to analyze space structures containing cracked members. A new stiffness matrix for cracked space members has been obtained. This model takes into consideration crack ... -
Comparison Of Metal Corrosion Inhibition By Gravimetric And Linear Polarization Resistance Methods
( Qatar University , 1992 , Article)Studies were conducted to evaluate the effectiveness of various dosages of the selected silicate and phosphate compounds applied for corrosion inhibition of cast iron, copper, lead, and galvanized steel specimens. The ... -
Qualitative And Quantitative Assessment Of Drained Water From Urban Ground-Water
( Qatar University , 1992 , Article)Although the groundwater table in the State of Qatar peninsula is reducing, there is a persistent increasing level of groundwater in some areas in Doha city. This increasing tendency could be attributed to the topography ...