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السجلات المعروضة 14593 -- 14612 من 51431
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Investigation of Proton Diffusion Coefficient for PbO2 Prepared from Intermediate Oxides
( Pleiades Publishing , 2019 , Article)Lead dioxide was extracted from used batteries, and used to synthesize the following intermediate oxides by heating at different temperatures: Pb12O19, Pb12O17, and Pb3O4. Each of the prepared intermediate oxide was subject ... -
Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process
( Elsevier Ltd , 2022 , Article)This work presents a novel Mixed-Integer Non-linear Program (MINLP) that accounts for the presence of multiple fuels in tri-generation systems. The key novelty of this work pertains to the use of hybrid energy systems in ... -
Investigation of sensorless capacitor voltage balancing technique for modular multilevel converters
( IEEE , 2014 , Conference Paper)Modular Multilevel converters (MMC) have become one of the most promising topologies for DC-AC conversion in recent years. Capacitor voltage balancing is a vital issue for proper operation of the MMC. Generally, conventional ... -
Investigation Of Single-Update Memoryless Cg-Methods
( Qatar University , 1996 , Article)Two new CG-methods are proposed in this work for nonlinear unconstrained optimization problems which are considered as memoryless Variable Metric (VM) methods. They are derived for the inexact line searches and evaluated ... -
Investigation of solar PV performance under Doha weather using a customized measurement and monitoring system
( Elsevier Ltd , 2016 , Article)A key factor in future eco-friendly and reliable energy systems for network stability is energy prediction of renewable resources. However, the climate-induced performance degradation represents a major drawback to solar ... -
Investigation of Spatial and Cultural Features in Contemporary Qatari Housing
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Housing is a basic human need and a fundamental component of settlement status. The architectural form and spatial provisions of housing evolve in line with—and transform to meet—a specific era’s needs. Globalization has ... -
INVESTIGATION OF SPATIAL AND SEASONAL MICROBIOME DYNAMICS AND ASSOCIATED ANTIBACTERIAL ACTIVITY IN SCLERACTINIAN CORAL PLATYGYRA DAEDALEA IN THE ARABIAN GULF
(2022 , Master Thesis)Corals have critical interactions with their associated microbes, which play an integral part in maintaining coral health and stability. Environmental factors can influence the microbial community of the coral resulting ... -
INVESTIGATION OF SPATIOTEMPORAL VARIABILITY AND CONTAMINATION OF PLASTIC MARINE DEBRIS IN QATAR’S COASTAL WATERS
(2015 , Master Thesis)There has been a tremendous proliferation in plastic production in the last five decades due to its low cost and versatile applications. Plastic debris dominates the marine litter globally and has been found in the most ... -
Investigation of Spatiotemporal Variability of Microplastics in Qatar's Cstal Environment
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)There has been a tremendous proliferation in plastic production in the last five decades due to its low cost and versatile applications. Plastic debris dominates the marine litter globally and has been found in the most ... -
INVESTIGATION OF TEMPORAL VARIABILITY OF CORALS REVEALED BY ROV VIDEOS AT OIL PLATFORMS IN THE ARABIAN GULF
(2023 , Master Thesis)The study was conducted at AL-Shaheen oil field within the Arabian Gulf using remotely operated vehicle (ROV) footages in different oil platforms to investigate the impact of platform depth, age, and weight on coral relative ... -
An investigation of the causality links in the balanced scorecard: The case of the Gulf Cooperation Council hospitality industry
( Elsevier Ltd , 2022 , Article)In order to link different aspects of the balanced scorecard (BSC), i.e., learning, innovation, internal business, customer, and financial perspectives, Kaplan and Norton developed the concept of strategy maps to help ... -
Investigation of the effect of Al-8B master alloy and strain-induced melt activation process on dry sliding wear behavior of an Al–Zn–Mg–Cu alloy
( Elsevier, Ltd , 2014 , Article)Abstract This study was undertaken to investigate the influence of Al–8B master alloy and modified strain-induced melt activation process on the structural characteristics and dry sliding wear behavior of Al–12Zn–3Mg–2.5Cu ... -
Investigation of the effect of anticoagulant usage in the flow diverter stent treatment of the patient-specific cerebral aneurysm using the Lagrangian coherent structures
( Elsevier , 2021 , Article)Anticoagulants are prescribed to the flow diverter treated patients to diminish the risk of embolism in the arteries. In the present study, digital subtraction angiography images of a 49-year-old female patient with a left ... -
Investigation of the Effect of Imatinib and Hydroxyurea Combination Therapy on Hematological Parameters and Gene Expression in Chronic Myeloid Leukemia (CML) Patients
( MDPI , 2022 , Article)(1) Background: Chronic myeloid leukemia is defined as the neoplastic development of mostly myeloid cells in the bone marrow. Several treatments, including chemotherapy, radiation, hormone treatment, and immunological ... -
Investigation of the Effect of Larestan's Pipeline Water on the Mechanical Properties of Concretes Containing Granite Aggregates
( Hindawi Limited , 2019 , Article)In this study, the compressive strength of the concretes made by the pipeline water of Larestan has been investigated. Although the used water for the concretes must be clean, standard, and generally drinkable water, in ... -
Investigation of the effect of PD-L1 blockade on triple negative breast cancer cells using fourier transform infrared spectroscopy
( MDPI AG , 2019 , Article)Interactions between programmed death-1 (PD-1) with its ligand PD-L1 on tumor cells can antagonize T cell responses. Inhibiting these interactions using immune checkpoint inhibitors has shown promise in cancer immunotherapy. ... -
Investigation of the effect of polyelectrolyte structure and type on the electrokinetics and flocculation behavior of bentonite dispersions
( Elsevier B.V. , 2017 , Article)The influence of surface charge type and density, and molecular weight of cationic, anionic and amphoteric polyacrylamide (PAM) on the electrokinetics, adsorption and flocculation behavior of highly stable bentonite ... -
Investigation of the effect of surfactant on the electrokinetic treatment of PFOA contaminated soil
( Elsevier , 2022 , Article)Perfluorooctanoic acid (PFOA) is a persistent, nonbiodegradable environmental pollutant progressively becoming more problematic. Due to its ubiquitous use, PFOA is one of the PFAS chemicals frequently detected in the ... -
Investigation of the Effect of the Force-Frequency on the Behaviour of a New Viscous Damper for Railway Applications
( Qatar Univesrity Press , 2020 , Conference Paper)The primary purpose of this work is to experimentally investigate the damping coefficient of a viscous damper, intended to be used in railway applications to reduce noise emission. The viscous shock absorber used in this ... -
Investigation of the Effect of The Temperature and Magnetization Pattern on Flux Density, Instantaneous Torque, Unbalanced Magnetic Forces of a Surface Inset PMM
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)Electrical machines utilized in domestic applications such as ceiling fans should have low losses and cost. Permanent magnets are used instead of rotor excitation to reduce losses. Therefore, not only the losses of the ...
