Browsing by Title
Now showing items 10172-10191 of 49774
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Experimental investigation of the influence of grain geometry on residual NAPL using synchrotron microtomography
( Elsevier B.V. , 2014 , Article)The objective of this work was to investigate the impact of grain geometry (size and shape) of porous media on the morphology of residual NAPL. Synchrotron microtomography was used to obtain maps of residual NAPL in ... -
Experimental investigation of the laminar flame speeds of GTL fuel blends
( American Institute of Aeronautics and Astronautics Inc, AIAA , 2016 , Conference Paper)This work investigates the laminar flame speed of GTL fuel and its 50%-50% blend with conventional diesel, in a cylindrical bomb capable of measuring laminar flame speed, SN, at different initial temperatures and equivalence ... -
Experimental Investigation of the N-Pbs/P-Si Heterojunction Band Lineup with I-V and C-V Measurements
( Qatar University , 2005 , Article)In this paper we present experimental investigation of band lineup of near ideal PbS/Si heterojunction diode using I-V and C-V measurements. The C-V measurements show that the fabricated diodes were abrupt type, and the ... -
EXPERIMENTAL INVESTIGATION OF THE PERFORMANCE OF TRANSFORMER-BASED PREDICTION MODELS FOR REMAINING USEFUL LIFE
(2023 , Master Thesis)Remaining Useful Life (RUL) prediction is an essential task in predictive maintenance. This study aims to improve the performance of deep learning models for predicting the RUL of turbojet engines using the C-MAPSS dataset. ... -
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 ... -
Experimental Investigation of the Vibration Control of Nonrotating Periodic Drill Strings
( American Society of Mechanical Engineers , 2021 , Article)During the drilling process in oil and gas fields, slender drill strings often experience a multitude of complex and simultaneous vibrational phenomena. Drill string vibrations hinder the drilling process and can cause ... -
Experimental investigation of volume fraction in an annulus using electrical resistance tomography
( Society of Petroleum Engineers , 2019 , Conference Paper)Horizontal drilling technology has shown to improve the production and cost-effectiveness of the well by generating multiple extraction points from a single vertical well. The efficiency of hole cleaning is reduced because ... -
Experimental investigation on solar still with nanomaterial and dripping arrangement
( Bellwether Publishing, Ltd. , 2020 , Article)The scarcity of potable water for drinking purpose is everywhere in the world. The solar still can be used to provide potable water for the drinking purpose, but it has a daily yield of 3 litres/day. The experimental ... -
Experimental investigation on the compressibility of Al/Al2O3 nanocomposites
( Inderscience Publishers , 2016 , Article)The scientific importance of nanocomposites is being increased due to their improved properties. This paper introduces an experimental investigation on the relationship between the reinforcement weight fraction and ... -
Experimental Investigation on the Flexural Capacity of Reinforced Concrete Beams with Treated Wastewater and Recycled Concrete Aggregates
( Qatar University Press , 2023 , Conference Paper)Eco-friendly concrete is the most recommended sustainable option to reduce the excessive diminution of concrete natural resources and the high generation of greenhouse gas emissions. Therefore, the present study explores ... -
Experimental investigation on the influences of acetone organic compound additives into the diesel/biodiesel mixture in CI engine
( Elsevier Ltd , 2020 , Article)The problems of the depleting the worldwide fossil fuel and increasing concern on the environmental regulations force the researchers to look forward to a new source of clean source of energy such as biodiesel. Diesel fuel ... -
Experimental investigation on the performance of a novel thermo-mechanical refrigeration system driven by an expander-compressor unit
( Elsevier , 2022 , Article)Operating thermos-mechanical refrigeration (TMR) ejector-based and organic Rankine cycle-based refrigeration systems at ultra-low temperature heat source (60 °C to 100 °C) is challenging and limited by their low coefficient ... -
Experimental investigation on the thermal properties of NiO-nanofluids
( American Scientific Publishers , 2019 , Article)Performance parameters and thermal stability of lubricants are highly temperature dependent as it degrades twice for every 10 °C of temperature rise. Generally, the nanofluids have enhanced thermo-physical behavior as long ... -
Experimental investigation on the yield of solar still using manganese oxide nanoparticles coated absorber
( Elsevier Ltd , 2021 , Article)Present research expresses an experimental investigation on nanoparticle use to enhance Solar still (SS) yield. Manganese Oxide (MNO2) is selected as a nanoparticle material and used in SS. The nanomaterial is added with ... -
EXPERIMENTAL INVESTIGATIONS AND COMPUTATIONAL FLUID DYNAMIC PREDICTIONS OF PRESSURE DROP CHARACTERISTICS IN MULTIPHASE FLOW FOR CONCENTRIC INCLINED ANNULI IN NEAR HORIZONTAL WELLS
(06-2 , Master Thesis)In oil and gas sectors, the accuracy of pressure drop predictions plays significant role in designing multiphase flow systems. In recent decades, there is a considerable amount of theoretical and experimental studies dealing ... -
Experimental investigations of atmospheric water extraction device under different climatic conditions
( Elsevier Ltd , 2020 , Article)To help address this emergency, an atmospheric water extracting (AWE) device is developed and investigated as a part of present work. The AWE device is working on vapour compression refrigeration cycle. The air moisture ... -
Experimental Investigations of Gas Kick for Single and Two-Phase Gas-liquid Flow in near Horizontal Wells
( Qatar University Press , 2021 , Poster)Multiphase flow in pipelines is of great importance and broadly used in several industries for various applications. A multiphase flow is a complex physical phenomenon where more than one phase occurs. In oil and gas ... -
Experimental investigations on spray flames and emissions analysis of diesel and diesel/biodiesel blends for combustion in oxy-fuel burner
( John Wiley and Sons Ltd , 2019 , Article)Present research work shows the emissions and flame analysis of oxy-fuel combustion of diesel and diesel/biodiesel blends in the experimental test burner manufactured in Mechanical power engineering laboratory at Tanta ... -
Experimental investigations on the performance of a thermo-mechanical refrigeration system utilizing ultra-low temperature waste heat sources
( Elsevier , 2023 , Article)Experimental studies that investigate the utilization of ultra-low temperature (between 48 °C and 120 °C) waste heat, which forms 25 % of the global unrecovered waste heat, to drive thermal cooling systems are rare. Thus, ... -
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 ...
