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السجلات المعروضة 8625 -- 8644 من 49308
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Effect of Trace 100 vppm H2S on the Corrosion Behaviour of Plain Carbon and Microalloyed Steels in a Predominant Sweet Environment in High Flow Regime
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)We investigate the effects of the presence of trace (100 vppm) H2S on the corrosion behaviour of plain carbon steel and its various micro-alloyed counterparts in a CO2 saturated (sweet) brine (0.5 M NaCl) environment, in ... -
THE EFFECT OF TREATED WASTE WATER (TWW) ON THE RHIZOSPHERE MICROBIOMES AND THEIR IMPACT ON ARUGULA
(2016 , Master Thesis)Qatar needs to achieve water and food security in an arid climate and maintain its fossil-fuel energy exporting status. Treated wastewater (TWW) can be an alternative source for vegetable crops irrigation in Qatar; however, ... -
The effect of triiodothyronine on maturation and differentiation of oligodendrocyte progenitor cells during remyelination following induced demyelination in male albino rat
( Elsevier, Ltd , 2016 , Article)Demyelination was induced by two weeks cuprizone treatment. Rats of +ve control and triiodothyronine (T3) then received three subcutaneous injections of either saline or T3 day after day and sacrificed at the end of the ... -
Effect of Two Different Types of Olympic Rotation Order on Cardiovascular and Metabolic Variables in Men's Artistic Gymnastics
( Polish Academy of Science, Committee of Physical Culture , 2018 , Article)The rotation sequence-order differs from a gymnast to another according to the draw at the time of the qualifying competitions in men's artistic gymnastics. Only the six best gymnasts start on the floor exercises, the ... -
The effect of two substituents on different Organoselenides and tellurides to form new charge - transfer complexes
( Qatar University , 1999 , Article)Different organotellurides and selenides were prepared as electron donors and reacted with p-Benzoquinone (p-BQ) and m-Dinitrobenzene (m-DNB) as electron acceptors. The resulted molecules were considered as new charge ... -
The effect of two substituents on different organoselenides and tellurides to form new charge-transfer complexes
( Qatar University , 2004 , Article)Different organotellurides and selenides were prepared as electron donors and reacted with p-Benzoquinone (p-BQ) and m-Dinitrobenzene (m-DNB) as electron acceptors . The resulted molecules were considered as new ... -
Effect of two types of graphene nanoplatelets on the physico-mechanical properties of linear low-density polyethylene composites
( Taylor and Francis Ltd. , 2016 , Article)The influence of two types of graphene nanoplatelets (GNPs) on the physico-mechanical properties of linear low-density polyethylene (LLDPE) was investigated. The addition of these two types of GNPs - designated as grades ... -
Effect of U-turns and heavy vehicles on the saturation flow rates of left-turn lanes at signalized intersections
( MDPI , 2020 , Article)© 2020 by the authors. The Saturation Flow Rate (SFR) is a primary measure that can be used when estimating intersection capacity. Further, the efficiency of signal control parameters also depends on the accuracy of assumed ... -
Effect Of Unfed Female Weight On The Biology Of Hyalomma (Hyalomma) Impeltatum Schulze and Schlottke (Acari: Ixodidae)
( Qatar University , 1989 , Article)Unfed female Hyalomma (Hyalomma) impeltatum Schuize and Schlottke in 4 different weight groups of 2.6-5.0, 6.2-10.0, 10.3-14.7 and 15.2-22.3 mg, respectively, were investigated for the effect of unfed female weight (UFW) ... -
The Effect of Using Applied Mathematics Lessons On 7th Grade Students’ Attitudes Towards Mathematics
(2020 , Master Thesis)This study aims to explore the effect of using applied mathematics lessons on 7th grade students’ attitudes towards mathematics in Qatari preparatory governmental schools. It investigates the change in students’ attitudes ... -
Effect of using Cement Kiln Dust as a nano-material on the strength of cement mortars
( Springer Verlag , 2017 , Article)In this experimental study, the effects of using nano-sized Cement Kiln Dust (CKD) as a partial replacement for Ordinary Portland Cement (OPC) on the strength of cement mortars is investigated. The CKD was milled up to 4 ... -
Effect of using multiple fabric plies on the tensile behaviour of carbon textile reinforced mortar
( University of Cantabria - Building Technology R&D Group , 2020 , Conference Paper)Recently, textile reinforced mortar (TRM) has emerged as a viable strengthening material for reinforced concrete (RC) and masonry structures. Understanding the TRM tensile behaviour is important to achieve an accurate ... -
Effect of Utilizing a Novel Intake Manifold Design on Smoke Emissions and Particulate Size Distributions of a Gas-to-Liquid Diesel Engine
( American Society of Mechanical Engineers (ASME) , 2021 , Article)Smoke emissions and particulate matter (PM) size distributions were investigated on a direct-injection (DI) single-cylinder diesel engine running on both gas-to-liquid (GTL) and diesel fuels utilizing a novel spiral-helical ... -
Effect of UV/ozone treatment on surface hydrophilicity and humidity sensing properties of PVDF-BaTiO3 composite films
( Qatar University Press , 2021 , Poster)In this research work, we have studied the impact of UV/ozone treatment on the hydrophilicity of the PVDF-BaTiO3 nanocomposite film. We have prepared the nanocomposite solution by mixing PVDF (2.5 wt% kept constant) and ... -
Effect of vehicle safety recalls on the perception towards other vehicles from the same country of origin
( Periodical Offices of Chang- an University , 2019 , Article)A vehicle safety recall significantly impacts the demand for these specific manufacturer vehicles. The effect of this recall on the other manufacturers from the same country of origin (COO) that are not involved in the ... -
Effect of verbal instruction on motor learning ability of anaerobic and explosive exercises in physical education university students
( Frontiers Media S.A. , 2019 , Article)This study investigated the effect of motor learning with informational feedback into response to anaerobic exercises with and without motor learning tasks in handball physical education university students. Participants ... -
Effect of very long-term storage and multiple freeze and thaw cycles on 11-dehydro-thromboxane-B(2) and 8-iso-prostaglandin F(2α,) levels in human urine samples by validated enzyme immunoassays
( Springer Nature , 2024 , Article)Biological samples are often frozen and stored for years and/or thawed multiple times, thus assessing their stability on long-term storage and repeated freeze–thaw cycles is crucial. The study aims were to assess:—the ... -
The Effect of Visual Impairment and Its Severity on Vision-Related and Health-Related Quality of Life in Jordan: A Comparative Cross-Sectional Study
( Dove Medical Press , 2023 , Article)Purpose: To assess the effect of visual impairment (VI), its severity, and ocular diseases on vision-related and health-related quality of life (QoL) in Jordan. Patients and Methods: A comparative, cross-sectional, ... -
Effect of Voltage Level on the Performance of Silicone Rubber in the Inclined Plane Tracking and Erosion Test
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)This paper investigates the effect of the test voltage level on the performance of silicone rubber in inclined plane tracking and erosion test. Silicone rubber composites, filled with either alumina tri-hydrate or ground ... -
Effect of vortex order on helical-phased donut mode launch in multimode fiber
( American Scientific Publishers , 2015 , Article)Optical fiber sensors based on mode division multiplexing (MDM) play an increasingly vital role for real-time multi-parameter measurements. For multimode fibers, the central core region typically has defects in the refractive ...
