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481
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“…ObjectiveThe 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. MethodsFifty healthy teeth were collected from adult patients. …”
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482
Spatial, temporal, and demographic patterns in prevalence of chewing tobacco use in 204 countries and territories, 1990–2019: a systematic analysis from the Global Burden of Diseas...
Published 2021“…Among females, none of these 12 countries had significant decreases in prevalence of chewing tobacco use, whereas seven of 12 countries had a significant decrease in the prevalence of tobacco smoking use for the period. …”
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483
Supplementation of retrobulbar block with clonidine in vitreoretinal surgery
Published 2011“…Conclusions The addition of clonidine 0.5 μg/kg to the local anesthetics of a retrobulbar block for vitreoretinal surgery decreases the frequency of postoperative pain and prolongs the time of analgesia.…”
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484
Influence of co-current vapor flow on falling film over horizontal tube
Published 2021“…First, the liquid load is varied between 0.02 and 0.05 kg/(m·s), and its effects on the film thickness and the wetting time are calculated, presented and discussed. Afterwards, the impact of co-current vapor flow on film distribution, wetting time, minimum thickness and its location are quantified and examined by increasing the vapor velocity up to 6 m/s with 2 m/s intervals. …”
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485
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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486
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487
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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488
Quantitative Elastohydrodynamic Film-Forming for an Oil/ Refrigerant System
Published 2017“…It seems that only central film thicknesses have been experimentally measured for oil/refrigerant systems leaving these calculations as the only means of assessing the minimum.…”
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489
Impact of pharmacist-conducted anticoagulation patient education and telephone follow-up on transitions of care
Published 2021“…Results Two hundred patients were recruited in the study (100 patients in each study arm) with a mean age of 73.9 years. In the pharmacist-counseled group, more patients contacted their physician within 3 days (14% versus 4%; p = 0.010), received explicit elements of education (p < 0.001) and documentation in the chart was better (p < 0.05). …”
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490
Programming Effects of Short Prenatal Exposure to Dexamethasone in Sheep
Published 2002“…At 130 days of gestation, dexamethasone administered between 26 to 28 days of gestation (group DF; n8), resulted in an increased expression of angiotensinogen in hypothalamus (in arbitrary units: 2.5 0.3 versus 1.3 0.3 in the saline group [group SF], n10; P0.05). …”
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491
Shear behaviour of one-way high strength plain and FRC slabs reinforced with basalt FRP bars
Published 2022“…The model has accurately and conservatively predicted the experimental data with a mean experimental to predicted shear capacity of 1.10 and a coefficient of variation of 7.95 %.…”
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492
Sensitivity analysis and genetic algorithm-based shear capacity model for basalt FRC one-way slabs reinforced with BFRP bars
Published 2023“…<p dir="ltr">Fiber-reinforced polymer (FRP) composites are increasingly used in concrete structures owing to their superior corrosion resistance. …”
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493
Autism spectrum disorder in Qatar: Profiles and correlates of a large clinical sample
Published 2017“…There are currently no publications that clarify the mean age of diagnosis in Qatar, however, the present study showed that more than half of the diagnosed cases were among the ages of 7–14 years (56%). …”
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494
An additive manufacturing approach based on electrohydrodynamic printing to fabricate P3HT:PCBM thin films
Published 2023“…The EHDA printed thin-film’s topography, morphology and optical properties were systematically analyzed. The root-mean-square roughness was found to vary significantly with the annealing temperature and the flow rate and ranged from 1.938 to 3.345 nm. …”
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495
E-health literacy among university students amid a global pandemic
Published 2024“…The non-response rate was over 71%. The participants’ mean age was 25±7 years old. Almost 42% were Qatari and more than half of them (68.5%) were females. …”
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496
Prevalence of anxiety, sleep bruxism and temporomandibular disorders during COVID-19 in Qatari children and adolescents: a cross-sectional study
Published 2023“…An increased consumption of food, sweets and worsening of brushing habits were evident in 51.8%, 62.8% and 31.2%, respectively.…”
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497
In vitrocomparison of natural tooth-whitening remedies and professional tooth-whitening systems
Published 2023“…BackgroundAn increasing number of patients are using natural homemade remedies such as strawberries, banana peels, coconut oil rinse, basil, lemon, activated charcoal, apple cider vinegar, baking soda, and turmeric to obtain whiter teeth. …”
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498
PROACT: Parallel multi-miner proof of accumulated trust protocol for Internet of Drones
Published 2022“…In addition, we propose a new blockchain consensus mechanism in which several miners produce their blocks in parallel, which decreases the time needed to add transactions securely to the blockchain and meets the requirements of delay-sensitive applications. …”
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499
An experimental measurement of corona discharge using laser Dopplervelocimetry
Published 1998“…The corona wind velocity was measured by means of a laser Doppler velocimetry system implemented and calibrated in the laboratory. …”
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500
Research on the potential of photovoltaic technologies in reducing energy consumption in an urban mixed use residential community. A Case study for net zero energy community in Dub...
Published 2018“…This is mainly because most of its domestic energy needs are meet by subsidized electricity tariffs in Abu Dhabi also to blame for their high per capita GHG emissions. …”
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