Search
Now showing items 21-30 of 61
Compressive And Tensile Strength Of Concrete Loaded And Soaked In Crude Oil
(
Qatar University
, 2000 , Article)
Effect of crude oil on compressive, splitting-tensile, and flexural-tensile strength of concrete under short-term and Lr.^-term loading, were investigated. Results show that the rate of crude oil absorption is high at early ...
Calcium Nitrite Effect On Setting Of Cement At Various Temperatures
(
Qatar University
, 2000 , Article)
Calcium Nitrite, which is used as corrosion inhibitor, accelerates stiffening rates of cement. This paper deals with the effect of calcium nitrate on setting times of cement pastes at various curing temperatures. Four ...
Transmission Of Compressed Video Signals Through A Spread Spectrum Channel
(
Qatar University
, 2001 , Article)
This research studies the feasibility of devising a compression scheme for video sequences that is robust to fading errors in a spread spectrum environment. Schemes like subband coding and pyramid coding are inherently ...
LQRr Real-Time Control For Plants With Variable Parameters
(
Qatar University
, 2002 , Article)
This paper deals with real-time optimal LQR control of plants that experience sudden changes in their parameters and states. The technique is based on real-time LQR control problem. Riccati equation is solved recursively ...
Causes For Delays In Construction Projects In Kuwait
(
Qatar University
, 2002 , Article)
The paper presents a study based on a research that analyzes and ranks the causes of delays in building and housing type projects undertaken by governmental agencies in Kuwait. The study was based on a survey with the ...
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 ...
Stability Analysis Of Digital Pd Control Applied To Flexible Systems
(
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 ...
Thermal and catalytic cracking of petroleum residue oil
(
Qatar University
, 2005 , Article)
Thermal and catalytic cracking over synthesized nickel-molybdenum supported on aluminum borate (NiMo/AB) catalysts were studied. A series of aluminum borate supports with various aluminum borate (A/B) weight ratios were ...
On The Solution Of The Job-Shop Scheduling Problem Under Fuzzy Environment
(
Qatar University
, 2002 , Article)
This paper presents a solution algorithm for solving the job-shop scheduling problem involving fuzzy parameters in the constraints. It is considered that the processing times are those fuzzy parameters and the maximum ...
Experimental And Modeling Of Friables And Stone Oil Reservoirs Consolidation Using Steel Making Slag
(
Qatar University
, 2001 , Article)
A mathematical model was developed simulating the process of sand production in under downhole stress state. The model was derived based on Mohr-Colomb failure criterion, Darcy equation for radial flow and reservoir stress ...