تصفح Engineering Journal of Qatar University - [From 1988 TO 2005] حسب العنوان
السجلات المعروضة 55 -- 74 من 221
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Determination of Sara constituents of southwestern Nigerian tars sands and their Physical properties
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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
( 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 ... -
Effect Of Series Resistance On Photovoltaic Properties Of In-Doped Cdte(P) Thin Film Homojunction Structure
( Qatar University , 2001 , Article)The photovoltaic properties of In-doped CdTe(p) thin film homojunction structure have been investigated, specially the effect of the series resistance on the short-circuit current at low and high light intensities has been ... -
Effect of sulphates in cement (containing 5% pozzolana) and in sand on the correlation between compressive strength and u.p.v. of concrete of different mixes
( Qatar University , 1990 , Article)Sulphates may be found in any of the raw materials of cement. Sand contaminated with sulphates is currently a local problem because of the difficulty in obtaining well-graded sand which could be used in concrete that has ... -
Effective Moment Of Inertia And Deflections Of Reinforced Concrete Beams Under Long-Term Loading
( Qatar University , 1995 , Article)The paper presents a method for estimating long-term deflections of reinforced concrete beams by considering creep and shrinkage effects separately. Based on equilibrium and compatibility conditions a method is developed ... -
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 ... -
Electrical Conductivity Of Aluminum Reinforced Graphite Electrodes
( Qatar University , 1993 , Article)Composite, disc-like aluminum reinforced graphite electrodes were prepared, and an integrated parametric analysis has been performed to investigate the effect of some processing parameters on the electrical conductivity ...