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541
The Triple “S” Impact of COVID-19: Nationwide Evidence of the Impact of the Stress Associated With Restrictive Measures on Substance Use, Sleep, and Social Connectedness in Qatar...
Published 2023“…Of tobacco users in our sample, 36% reported increased tobacco use since the start of home confinement, while 41.6% of alcohol users reported decreased alcohol use. Concerning sleep, 46.1% reported an increase in average sleep duration per day (0.77 h mean increase, 95% CI: 0.66-0.88, P<0.001), and a third of participants reported poorer sleep quality. …”
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542
Healthcare Professionals' Attitudes Toward Patients With Mental Illness: A Cross-Sectional Study in Qatar
Published 2022“…</p> <h3>Results</h3> <p>A total of 406 nurses and 92 doctors participated in the study. The nurses' mean MICA score was significantly higher than that of the physicians. …”
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543
Synergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes
Published 2021“…All membranes were characterized in terms of chemical structure, morphology, hydrophilicity, porosity and mean pore size. Cross-section SEM images showed the distribution of GO and rGO-DDA between the pores and on the polymer walls. …”
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544
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. …”
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545
One-year experience of hybrid closed-loop system in children and adolescents with type 1 diabetes previously treated with multiple daily injections: drivers to successful outcomes
Published 2022“…HbA1c decreased from 8.2 ± 1.4% (66 ± 15.3 mmol/mol) at baseline, to 6.7 ± 0.5% (50 ± 5.5 mmol/mol) at 3 months (p = 0.02) and remained stable to 7.1 ± 0.6 (54 ± 6.6 mmol/mol) at 12 months (p = 0.02). …”
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546
The effect of Hydrogen Peroxide treatments on dental enamel porosity and protein structure and its long-term implications on tooth hardness and optical properties
Published 2025“…<h3>Objective</h3><p dir="ltr">The aim of this study is to investigate how hydrogen peroxide (HP) treatments affect enamel porosity and protein structure, as well as their impact on tooth shade and hardness over time. </p><h3>Methods</h3><p dir="ltr">Fifty healthy teeth were collected from adult patients. …”
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547
Intravenous administration of gold nanoparticles in rats exhibit alterations in sphingomyelins, bile acids, sphingolipids, and cholesterol esters levels
Published 2024“…Annotation of metabolites was determined by retention times and specific MRMs for each compound. Results indicate that AuNPs treatment significantly impacted several metabolic pathways. …”
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548
Clinical characteristics and outcome of children with acute cryptorchid testicular torsion: A single-center, retrospective case series study
Published 2024“…Preoperative color Doppler ultrasonography revealed absent or decreased testicular blood flow in the affected testes in 7/8 of patients. …”
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549
Nonlinear Control of Brushless Dual-Fed Induction Generator With a Flywheel Energy Storage System for Improved System Performance
Published 2025“…After optimization, the SMC settling time was significantly reduced from 0.7 seconds to 19.97 milliseconds, achieving a 96.9% improvement in response speed, while its steady-state error decreased from 0.48 to 0.06, marking an 87.5% reduction in tracking error. …”
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550
Optimization of Vapor Compression Refrigeration Cycles with Clathrate Hydrates Thermal Energy Storage
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doctoralThesis -
551
Vitamin D association with coagulation factors in polycystic ovary syndrome is dependent upon body mass index
Published 2021“…In addition, coagulation variables such as thrombin-activatable fibrinolysis inhibitor, plasminogen activator inhibitor-1 (PAI-1), D-dimer, Antithrombin and thrombomodulin have been reported to be elevated in PCOS compared to control subjects, and the functional coagulation tests including prothrombin time, thrombin time and fibrin degradation products may be predictive of PCOS. …”
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552
Assessing the risk of angiotensin receptor blockers on major cardiovascular events: a systematic review and meta-analysis of randomized controlled trials
Published 2020“…</p><h3>Results</h3><p dir="ltr">Forty-five RCTs comprising of 170,794 participants were included in the analysis. …”
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553
Effects of financial turmoil on financial integration and risk premia in emerging markets
Published 2016“…Accordingly, we estimate a variant of the International Asset Pricing Model developed by Carrieri et al. (2007), allowing for time-varying stock market integration, in which we include the foreign currency risk. …”
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554
The effect of the local inertial term on the fluid flow in channels partially filled with porous material
Published 2001“…Also, it is found that the deviation between the predictions of the transient and the quasi-steady models is more significant in the porous domain and the deviation decreases as the time proceeds.…”
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555
Peripheral inflammatory and metabolic markers as potential biomarkers in treatment-resistant schizophrenia: Insights from a Qatari Cohort
Published 2024“…Multivariate analysis highlighted significant differences in platelet count, mean platelet volume (MPV), TG, HbA1c, BMI, neutrophil/lymphocyte ratio (NLR), monocyte/lymphocyte ratio (MLR), and ferritin among the groups. …”
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556
Brain microstructural changes support cognitive deficits in HIV uninfected children born to HIV infected mothers
Published 2020“…Decreased FA along with both increased and decreased MD in different brain regions was present in HUC compared to CHNM. …”
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article -
557
Enhanced PSO-Based NN for Failures Detection in Uncertain Wind Energy Systems
Published 2023“…The proposed methodology improves the diagnosis abilities, reduces the computation time, and decreased the storage cost. The presented experimental results prove the high performance of the suggested paradigms in terms of computation time and accuracy.…”
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558
Graph-Guided Regularized Regression of Pacific Ocean Climate Variables to Increase Predictive Skill of Southwestern U.S. Winter Precipitation
Published 2021“…Physics-based deterministic models show limited ability to predict precipitation as the lead time increases, due to imperfect representation of physical processes and incomplete knowledge of initial conditions. …”
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559
Efficacy of Cannabidiol Combination with Cisplatin or Paclitaxel against Platinum-Resistant Ovarian Cancer Cell Lines
Published 2022“…Monotherapy with CBD demonstrated a dose-dependent tumor growth inhibition at 72h, with the IC50 being 12.5 μg/ml for OVCAR-3 cell line and 12.3 μg/ml for SK-OV-3 cell line. …”
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masterThesis -
560
The global burden of cancer attributable to risk factors, 2010–19: a systematic analysis for the Global Burden of Disease Study 2019
Published 2022“…Reducing exposure to these modifiable risk factors would decrease cancer mortality and DALY rates worldwide, and policies should be tailored appropriately to local cancer risk factor burden.…”