Browsing Engineering Journal of Qatar University - [From 1988 TO 2005] by Publication Date
Now showing items 41-60 of 221
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Control Algorithms Of Digital Automatic Voltage Regulators For Synchronous Generators
( Qatar University , 1990 , Article)The main concepts of the application of digital controllers to a power system as automatic voltage regulators are presented in this paper. An experimental study using a physical model of a limited size power system has ... -
Design Of A Simple Apparatus For Reaction Kinetics And Reactor Design Experiments
( Qatar University , 1990 , Article)Tubular reactor experiments arc an integral part of an undergraduate course in reaction kinetics and reactor design. However, the successful design of such experiments necessitates meeting a set of criteria regarding safety, ... -
On The Computational Efficiency Of Four Numerical Techniques For Solving The Practical Inverse Kinematics Problem Of Redundant Manipulators
( Qatar University , 1990 , Article)In this paper we compare the computational efficiency of four methods for solving the practical inverse kinematics problem of redundant manipulators. Two methods use recursive approaches for sequential determination of ... -
Pollution Analysis and Control in Petroleum Refineries
( Qatar University , 1990 , Article)Air, liquid and noise emissions from different equipment in petroleum refineries have been analyzed. Most data have been correlated or tabulated in order to make possible using them in estimating the impact of the different ... -
Hierarchical Floor Plan For Vlsi Integrated Circuits Based On Analytical Techniques
( Qatar University , 1990 , Article)The physical design of electronic circuits consists of transforming a design specification into a representation to be used in the manufacture of the physical circuits. At Very Large Scale Integration (VLSI) level it becomes ... -
An Improved Model Describing Mass Transfer In Three-Phase Fluidized Beds
( Qatar University , 1990 , Article)A model for describing mass transfer in three-phase fluidized beds has been developed and tested using experimental data. The presence of two distinguishable mass transfer zones in three-phase fluidized beds led to the ... -
A Review of Fatigue Testing Machines
( 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 ... -
Effects of acid smut production on Design of industrial chimneys
( Qatar University , 1990 , Article)Atmospheric, mechanical and chemical kinds of attacks on industrial chimneys constructed of brickwork, concrete and steel are discussed. Acid smut production in chimneys is described. Two of the factors, widely regarded ... -
Onset of Convection in a Liquid Film Flowing
( Qatar University , 1990 , Article)The thermal instability of a vicsious liquid film flowing down an inclined plane heated from below is studied analytically. The effects of Biot number at the free surface, the inclination, the Prandtl number and the Reynolds ... -
The Diffusion Diaphragm Cell: A State-Of-The-Art-Review
( 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 ... -
A novel push-pull machine for testing High cycle fatigue
( Qatar University , 1990 , Article)A novel machine designed and constructed to exert cyclic axial load for fatigue testing is herein reported. The main features of the test rig constitute the sinusoidal form of load wave and the stress - controlled, system ... -
Performance of Greenhouses in The Arabian Gulf
( Qatar University , 1990 , Article)This work is devoted to the gaining of insight into the operation of environmentally controlled greenhouse in hot and humid climates. Field data inside and outside the greenhouse, namely: solar radiation, dry and wet bulb ... -
Design Of An E-Mail System For Personal Computers
( 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 ... -
Rainfall Characterization In An Arid Area
( Qatar University , 1991 , Article)The objective of this work is to characterize the rainfall in Doha which lies in an arid region. The rainfall data included daily rainfall depth since 1962 and the hyetographs of the individual storms since 1976. The ... -
Experimental Measurement Of Drop Phase Mass Transfer Coefficients For The Carbon Tetrachloride-Acetic Acid-Water System
( Qatar University , 1991 , Article)The overall mass transfer coefficients of single drops of carbon tetrachloride falling in a stagnant continuous phase of water containing acetic acid as solute were measured experimentally for different dispersed phase ... -
Examination Of An Oil Separator Pressure Vessel (Case History)
( Qatar University , 1991 , Article) -
Microcomputer Aided Selection Of Robot Manipulators
( Qatar University , 1991 , Article)This paper presents two programs for microcomputer aided assessment of the performance of robot manipulators. The first program automatically generates robot models based on user-supplied kinematic parameters. The program ... -
Structural Design Of Arch Profile And Depth — A Computer-Aided Study
( Qatar University , 1991 , Article)This paper presents a comparative study of some of the best known and widely used arch profiles, in an endeavour to investigating their structural performance and to determining optimum arch form and depth. Arch profiles ... -
Heighting Accuracy Of Spot Imagery
( Qatar University , 1991 , Article)The SPOT imaging system is the first sensor with stereoscopic capability and global continuous coverage. Stereopairs with overlap and base to height ratio suitable for the extraction of height information with reasonable ... -
A Computer Aided Design Tool For Area Optimization Using Breadth First Search Technique
( Qatar University , 1991 , Article)Floorplanning is the process of partitioning an area on any surface such that the partitions guarantee minimum wasted area. The technique used to partition a given are depends on the requirements of the application. In an ...
