تصفح Research Units حسب العنوان
السجلات المعروضة 2311 -- 2330 من 4652
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Investigating the behavior of railroad ballast in a box test under sinusoidal & simulated train loading
( National Technical University of Athens , 2019 , Conference Paper)The use of railway transportation systems has been increased throughout the years. Conventional ballasted tracks have been widely used in many countries around the world. Ballast material is the basic element in ballasted ... -
Investigating the biodiversity and current status of the historically renowned oyster beds of Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2015 , Conference Paper)The "Pearl Oyster" Pinctada radiata has long been associated with the nation of Qatar. Historically pearl oysters were harvested in huge quantities in the Arabian Gulf with Qatari pearls making up a large percentage of the ... -
Investigating the concomitant removal of hydrocarbons and heavy metals by highly adapted Bacillus and Pseudomonas strains
( Qatar University Press , 2021 , Poster)This study investigates the concomitant removal of hydrocarbons and heavy metals by highly adapted Bacillus and Pseudomonas strains. In regions characterized by harsh conditions such as Qatar, the weathering processes would ... -
Investigating the Effect of a Proposed Educational Robot on Students‘ Motivation and Learning of Thermodynamic Concepts
(2024 , Conference Paper)Research in Morocco shows a decrease in motivation and learning of physics subjects for Moroccan middle school students, which negatively impacts their school achievement. The present study aims to identify the effect of ... -
Investigating the Efficiency and Safety of Signalized Intersections Under Mixed Flow Conditions of Autonomous and Human-Driven Vehicles
( Springer , 2020 , Article)© 2020, King Fahd University of Petroleum & Minerals. Field experiments of autonomous driving systems have already been started in several countries around the world. However, investigations on the performance of signalized ... -
Investigating the impact of a novel active gap metering signalization strategy on driver behavior at highway merging sections
( Elsevier Ltd , 2021 , Article)A safe headway to the lead vehicle is important to reduce conflicts with merging vehicles from highway on-ramps. Previous research has outlined the advantage of gap metering strategies to yield sufficient space to merging ... -
Investigating the impact of dynamic merge control strategies on driving behavior on rural and urban expressways – A driving simulator study
( Elsevier Ltd , 2019 , Article)Harsh decelerations and abrupt lane changes of drivers on the outer expressway lane in response to merging platoon vehicles from on-ramps increase the crash- and congestion risk on expressways. Several merge control ... -
Investigating the impact of innovative treatments on driving behavior at school bus stops: A driving simulator study
( Qatar University Press , 2021 , Poster)The illegal overtaking/crossing of stopped school buses has been identified as one of the leading causes of students' injuries and fatalities. The likelihood of students in getting involved in a school bus-related crash ... -
Investigating the Impacts of Graphical Route Information Panel Layouts on Drivers’ Comprehension and Response Time
( Springer Verlag , 2019 , Article)Graphical route information panels (GRIPs) are an alternative to conventional text-based variable message signs to address different traveler information needs. Since drivers are traveling at higher speeds on the motorways, ... -
Investigating the potential of using solid waste generated from stone cutting factories for phenol removal from wastewater: A study of adsorption kinetics and isotherms
( Elsevier , 2023 , Article)Remarkably toxic, phenol requires efficient elimination from water. This study investigates the utilization of solid waste generated by stone-cutting factories for extracting phenol from wastewater. The solid waste underwent ... -
Investigating the quality and efficiency of biosolid produced in qatar as a fertilizer in tomato production
( MDPI , 2021 , Article)This study evaluated biosolid quality over time and the efficiency of using amounts (5 and 7 kg/m2) of municipal class A biosolids in Qatar to fertilize tomato plants (Solanum lycopersicum). Random samples were subjected ... -
Investigation and Application of Bacillus licheniformis Volatile Compounds for the Biological Control of Toxigenic Aspergillus and Penicillium spp
( American Chemical Society , 2019 , Article)The present study was designed to investigate the antagonistic activity of Bacillus licheniformis BL350-2 against mycotoxigenic strains of Aspergillus and Penicillium. In vitro coincubation for 5 days indicated Aspergillus ... -
Investigation and performance analysis of Scheffler reflector solar cooking system integrated with sensible and latent heat storage materials
( Taylor and Francis Ltd. , 2020 , Article)In this present research work, Scheffler reflector is taken to supply heat to specially designed cooker having sensible and latent heat storage materials. Here, three different types of sensible heat storage materials like ... -
Investigation and performance analysis of solar still with energy storage materials: An energy- exergy efficiency analysis
( Elsevier Ltd , 2022 , Article)Researchers have attempted different Energy storage materials (ESM) in solar stills (SS) to improve distillate yield. In this experimental work, an attempt was made to increase the distillate yield & efficiency of SS, using ... -
Investigation and performance analysis of water-diesel emulsion for improvement of performance and emission characteristics of partially premixed charge compression ignition (PPCCI) diesel engines
( Elsevier Ltd , 2019 , Article)Partially premixed charge compression ignition (PPCCI) engine is a promising technique as compared with the conventional diesel engine. The present research paper shows the use of water-diesel emulsion at varying concentrations ... -
Investigation into mechanical, surface and adhesive properties of date palm wood-polyolefin micro composites
( Technical University in Zvolen , 2020 , Article)Wood-plastic composites are composite materials made of wood fibre or other lignocellulosic materials and thermoplastic(s). Date palms are one of the potential replacements of insufficient timber sources in the Middle ... -
Investigation of antimicrobial properties and in-vitro bioactivity of Ce3+-Sr2+dual-substituted nano hydroxyapatites
( Blackwell Publishing Inc. , 2019 , Article)Dual doped calcium apatite has been widely focused as it enhances the osteoconductive property for the possible applications in orthopedic and dental implants. In this work, we investigate the antimicrobial and bioactive ... -
Investigation of beech wood modified by radio-frequency discharge plasma
( Elsevier Ltd , 2015 , Article)Low-temperature plasma was used to improve the surface and adhesive properties of wood. The pre-treatment of wood surfaces using radio-frequency (RF) discharge plasma is attractive for various wood applications, mainly ... -
Investigation of Biochemical Alterations in Ischemic Stroke Using Fourier Transform Infrared Imaging Spectroscopy-A Preliminary Study.
( MDPI , 2019 , Article)Brain damage, long-term disability and death are the dreadful consequences of ischemic stroke. It causes imbalance in the biochemical constituents that distorts the brain dynamics. Understanding the sub-cellular alterations ... -
Investigation of factors affecting turn signal usage at modern roundabouts in State of Qatar
( Informa UK Limited - Taylor & Francis , 2023 , Article)Drivers are expected to use turn signals to indicate other drivers of their intentions of taking turns, lane changing, merging or diverging indicating safe driving behaviour. This study investigated the rates of turn signal ...
