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141
The impact of COVID-19 pandemic on tobacco use: A population-based study
Published 2023“…Results The prevalence of smoking was 33.3%, 46.1%, and 21.1% for cigarettes (Cg), waterpipe (Wp), and E-cigarettes (ECg), respectively. Among the smokers, 38.5-45.8% reported a "no-change,"while 32.1-41.7% reported a "decrease"in SH during confinement. …”
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142
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143
Resistive room temperature LPG sensor based on a graphene/CdO nanocomposite
Published 2019“…The electrical resistance measurement at a constant bias voltage of 0.5 V. The sensor of type CdO/graphene (1 wt.%) exhibits a sensitivity of 600 ppm of LPG at 27 C. …”
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144
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145
Textile-Reinforced Mortar (TRM) System as a Strengthening Technique on Reinforced Concrete Beams
Published 2016“…The cement-based mortar used in TRM acts as a barrier against chloride ions penetration thus protecting the main reinforcing bars from corrosion attack. …”
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146
Qatar Culture Collection of Microalgae: A Sustainable Source for Biodiesel Production and Omega Fatty Acid Compounds
Published 2016“…In addition, we observed the presence of the omega-3 and 9 long-chain polyunsaturated fatty acids (LC-PUFAs), such as eicosapentaenoic (EPA, 20:5 n-3), docosahexaenoic (DHA, 22:6 n-3) and Nervonic Acid (C24:1 n-9) acids, which have a high commercial value and are known for their beneficial effects on human health…”
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147
Impact of Draw Solution Concentration on Forward Osmosis Process: A Simulation Study
Published 2020“…Also, while increasing concentration of draw solution, energy consumption decreased. The maximum recovery rate of 33% was achieved using (0.5M NaCl) draw solution and a flow rate of 40000 m3/day. …”
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148
Tailoring optical absorption in silicon nanostructures from UV to visible light: A TDDFT study
Published 2016“…(ii) The exciton binding energy is seen to decrease by approximately 45% from 0.67 eV to about 0.3 eV with length increase, for a nanostructure with a cross-section diameter of approximately 12 Å. …”
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149
Sorption of benzene and naphthalene on (semi)-arid coastal soil as a function of salinity and temperature
Published 2018“…The sorption of naphthalene was not affected by the change in salinity but increased by 18% when the temperature decreased from 35 to 5 �C. A sorption kinetic model was also applied to define the sorption behavior of benzene and naphthalene for the coastal soil collected in Qatar and the best fits were achieved with the Langmuir sorption isotherm.…”
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A new process for the recovery of ammonia from ammoniated high-salinity brine
Published 2021“…The initial ammonia concentration in a Solvay effluent of 13,700 mg/L N was decreased to 190 mg/L N. …”
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152
Effect of using Cement Kiln Dust as a nano-material on the strength of cement mortars
Published 2017“…The CKD was milled up to 4 hours in a planetary ball mill. In addition to the control cement mortar mixture with 0% CKD, a total of 28 concrete mortar mixtures were prepared with four different replacement percentages of nano-CKD (5, 10, 15, and 20 %), and seven different milling times (1, 1.5, 2, 2.5, 3, 3.5, and 4 hours). …”
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153
Influence of natural gas composition on adsorption in calcite Nanopores: A DFT study
Published 2021“…The nanopores absorbed up to 28 and 24 molecules of CH4 and CO2, respectively, and the adsorption energy decreased to −0.0062 and −0.0075 eV/Å2 for each. Although the nanopore was filled spatially by the molecules, its surface still has an affinity to absorb more gas molecules energetically. …”
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154
Partial characterization Of an alkalophilic extracellular Crude pectinases from a bacillus Polymyxa strain
Published 1999“…Chelating agents such as lmM EDTA caused a decrease in pectate lyase activity by about 48%, nitrilotriacetate (NTA) also caused a decrease in activity of pectin lyase and pectate lyase by about 35% and 53% respectively. …”
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The Effects of Statin Treatment on Serum Ferritin Levels: A Systematic Review and Meta-Analysis
Published 2022“…Results: The meta-analysis of nine studies (1611 patients) analyzing the effects of statins on serum ferritin levels that were included showed a significant decrease in circulating ferritin levels caused by statins. …”
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158
Socket Shield Technique to Improve the Outcomes of Immediate Implant: A Systematic Review and Meta-Analysis
Published 2023“…Additionally, SST had a significant increase in implant stability (MD = 3.46, 95 % CI [1.22, 5.69], p = 0.002) and pink esthetic score (MD = 1.60, 95% CI [0.90, 2.30], p < 0.0001). …”
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159
Aldehyde dehydrogenase expression in Metaphire posthuma as a bioindicator to monitor heavy metal pollution in soil
Published 2016“…The ALDH activity was found to be highest in worms cultured in 5 ppm heavy metal contaminated soils. Although, ALDH activities decreased as the heavy metal concentration in soil increased, they were significantly higher when compared to control worms cultured in uncontaminated soils. …”
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