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421
Sustainable Detoxification of Methylene Blue in Wastewater via Tea Residue Adsorption: Optimization and Kinetics
Published 2025“…The impact of various parameters on MB removal was assessed, including solution pH, adsorbent dosage, pollutant concentration, and contact time. Optimal conditions were identified as pH 10, a dosage of 4 g/L, a concentration of 100 mg/L, and a contact time of 2 h, achieving nearly 99% removal efficiency at 25 °C. …”
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422
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423
Throughput of ARQ protocols over Rician, Nakagami and MIMO block fading channels
Published 2020“…Keywords: ARQ, throughput, error probability, fading channels, space-time, multiple antennas, transmit diversity, MIMO, Rician, Nakagami.…”
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424
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425
Fixed-interval versus OCT-guided variable dosing of intravitreal bevacizumab in the management of neovascular age-related macular degeneration
Published 2012“…Results Compared to baseline, variable dosing had a mean improvement in BCVA of 11.0 letters after 12 months vs 9.2 letters for fixed-interval dosing (P = .81). …”
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426
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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427
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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428
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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429
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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430
Using Data Mining and Text Mining Techniques in Predicting the Price of Real Estate Properties in Dubai
Published 2014“…It is found that the results of linear regression prediction have been improved significantly after adding text mining to the experiments. The root mean squared errors RMSEs for all data subsets have decreased leading to enhancing the accuracy of prediction. …”
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431
The Effect of High Dose Isoflavone Supplementation on Serum Reverse T3 in Euthyroid Men With Type 2 Diabetes and Post-menopausal Women
Published 2018“…Thyroid stimulating hormone (TSH) serum concentrations increased while free thyroxine (fT<sub>4</sub>) concentrations decreased with 3 months of SPI compared to SP supplementation for both men and women. rT<sub>3</sub> correlated with TSH in both studies (<i>p</i> = 0.03) but not with either fT<sub>3</sub> or fT<sub>4</sub>. fT<sub>3</sub> levels did not differ between the SPI and SP preparations.…”
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432
Novel proteins implicated in lipid metabolism disorders
Published 2016“…</p><p>ANGPTL4 is a protein that is activated during fasting, decreasing the release of free fatty acids from circulating triglyceride-rich lipoproteins. …”
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433
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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434
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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Phase state of secondary organic aerosol in chamber photo-oxidation of mixed precursors
Published 2021“…Although less important than RH and MR<sub>org/inorg</sub>, the SOA composition plays a second-order role, with differences in the liquid-to-nonliquid transition at moderate MR<sub>org/inorg</sub> of ∼ 1 observed between biogenic-only (anthropogenic-free) and anthropogenic-containing VOC systems. Considering the combining role of the RH and chemical composition in aerosol phase state, the BF decreased monotonically with increasing hygroscopic growth factor (GF), and the BF was ∼ 0 when GF was larger than 1.15. …”
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437
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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438
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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439
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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Outcomes of POCUS‐Guided Peripheral Intravenous Access in Difficult Venous Access Patients: A Systematic Review and Meta‐Analysis
Published 2025“…A systematic review of 15 studies with 1485 patients, sourced from five databases, including PubMed, Cochrane Library, MEDLINE, Web of Science, and Google Scholar, showed POCUS significantly improved success rates (OR: 4.25), first‐attempt success (OR: 5.31), reduced attempts (MD: −0.83), and decreased procedure time (MD: −9.75 min). Fewer complications (OR: 0.49) observed with POCUS compared to standard techniques. …”