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581
Assessment of the use of dolomite for the recovery of ammonia from field landfill leachate. (c2019)
Published 2019“…Using dissolved dolomite along with Na3PO4·12H2O as a phosphate source at a molar ratio of 1.25:1.0:1.25 (Mg2+:NH4+:PO43-) and a pH of 9.5 resulted in an ammonia removal efficiency of 90%. …”
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masterThesis -
582
STEM: spatial speech separation using twin-delayed DDPG reinforcement learning and expectation maximization
Published 2025“…In this paper, a novel speech separation algorithm is proposed that integrates the twin-delayed deep deterministic (TD3) policy gradient reinforcement learning (RL) agent with the expectation maximization (EM) algorithm for clustering the spatial cues of individual sources separated on azimuth. …”
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583
Grid integration of renewable energy in Qatar: Potentials and limitations
Published 2021“…The results show that large-scale installations of renewable energy technologies can decrease the emission rate from electricity production at a relatively lower cost. …”
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584
Dispatchable capacity optimization strategy for battery swapping and charging station aggregators to participate in grid operations
Published 2023“…Also, the aggregator does not worsen the original power load while meeting the EV swapping demand and can decrease the daily load fluctuations by 0.65% and 12.89%, reduce the peak–valley difference by 5.81% and 7.80%, and increase the load rate by 3.67% and 4.08% in working and non-working day situations through providing the dynamic dispatchable capacity for the grid.…”
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585
Unraveling the future productivity burden of cardiovascular disease in Qatar: Investigating the modifiable risk factors control in type 2 diabetes
Published 2025“…However, implementing interventions to decrease the T2D incidence, lower SBP, reduce the number of smokers, and improve the total cholesterol could yield gains of 200,408, 198,173, 194,725, and 113,462 PALYs, respectively. …”
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586
Isolation and study of Lipase activity of an olive oil degrading Thermoactionomyces SP. (c2002)
Published 2002“…The isolate grew optimally at a temperature of 60°C, a pH of 7.3, and an orbital shaking of 250 r.p.m. It showed an efficient olive oil degrading ability. …”
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masterThesis -
587
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588
Changes in Physical Activity and Sedentary Behavior Amid Confinement: The BKSQ-COVID-19 Project
Published 2020“…Among the participants who were regularly involved in PA, the majority (41.8–42.2%) of the participants reported a “decrease” (p<0.05) in walking, jogging, and sports while the majority (46.3–53.1%) reported a “no change” (p<0.05) in swimming, cycling, and weight lifting. …”
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589
Leveraging sentiment analysis of Arabic Tweets for the 2022 FIFA World Cup insights, incorporating the gulf region
Published 2024“…After data cleaning, a refined dataset of 43,658 tweets, was categorized into positive, neutral, and negative sentiments based on sentiment scores.</p><h3>Findings</h3><p dir="ltr">Arabic tweets, initially held a positive sentiment towards the World Cup, which increased during the tournament, accompanied by a decrease in negative sentiment.…”
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590
IoT‐based mock oxygenator for extracorporeal membrane oxygenation simulator
Published 2023“…For the context of simulation-based training (SBT) oxygenators are often expensive and cannot be recycled owing to contamination issues.</p> <h3> Methods</h3> <p>Consequently, it is advised that the training process include a simulated version of oxygenators to optimize reusability and decrease training expenses. …”
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591
Reducing terrorism with development ; the United Nations' new path. (c2009)
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masterThesis -
592
An Exploration of Smoking Patterns Among People with Serious Mental Illness Attending an Outpatient Clinic in Qatar
Published 2022“…<h3>Background</h3><p dir="ltr">Studies have shown that tobacco use is exceptionally high in people affected with serious mental illness (SMI). …”
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593
Performance analysis of a small-scale Orthopter-type Vertical Axis Wind Turbine
Published 2018“…Wind tunnel experiments were carried out to measure the torque of two-, three, and four-bladed turbine, each at a set of different wind speeds and blade aspect ratios. …”
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594
ACTB Loss-of-Function Mutations Result in a Pleiotropic Developmental Disorder
Published 2017“…<i>ACTB</i> mRNA expression levels in lymphoblastic lines and fibroblasts derived from affected individuals were decreased in comparison to those in control cells. …”
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595
Walking around the preferred speed: examination of metabolic, perceptual, spatiotemporal and stability parameters
Published 2024“…Thirty-four young sedentary adults (18 women) volunteered to walk at seven speeds relative to their PWS in 3-min trials interspaced with 3-min rest intervals. …”
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596
Coping strategies, optimism, and resilience factors associated with mental health outcomes among medical residents exposed to coronavirus disease 2019 in Qatar
Published 2023“…Strategies promoting optimism, resilience, and approach coping styles can decrease the mental health burden of the pandemic on medical residents.…”
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597
Effect of anions on the structural, morphological and dielectric properties of hydrothermally synthesized hydroxyapatite nanoparticles
Published 2019“…The εʹ and dielectric loss (εʹʹ) values for the HA nanoparticles decrease with increase in the applied frequency as well. …”
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598
Fluid-Structure-Acoustic coupling analysis for external laminar and turbulent fluid flows
Published 2023“…The results indicate that the transmission loss is 27% more at the elastic plate’s highest position. By decreasing the length of the elastic plate by 50%, the mean transmission loss is reduced by 9%. …”
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599
Healthcare Professionals' Attitudes Toward Patients With Mental Illness: A Cross-Sectional Study in Qatar
Published 2022“…<h3>Background</h3> <p>Negative attitudes toward mental illness by Health Care Professionals (HCP) have been reported in many countries across the world. …”
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600
Evaluating the impact of the Minimization of Aggression and Violence (MoAV) intervention on mechanical restraint use in Qatar's acute mental health setting
Published 2025“…The percentage of restrained patients decreased from 25 % to 4 %, p = (<0.001). The mean duration of restraint incidents slightly increased from 59.1 min in 2016 to 61.3 min in 2021, though this change was not statistically significant. …”