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ng decrease » _ decrease (Expand Search)
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50 ng » 10 ng (Expand Search), 50 μg (Expand Search)
ng decrease » _ decrease (Expand Search)
w decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
50 ng » 10 ng (Expand Search), 50 μg (Expand Search)
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Wind energy potential along the onshore and offshore Qatar
Published 2020“…Among the select locations, the highest annual mean wind power density is obtained in the o?shore Ruwais (152 W/m2), followed by o?shore Ras La?an (134 W/m2) and land area of Al Khor (120 W/m2). …”
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An Improved Fault Tolerant Five-Phase Induction Machine Using A Combined Star/Pentagon Single Layer Stator Winding Connection
Published 2015“…A 1kW prototype machine is used for experimental verification.…”
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Enhanced oil recovery using hyperbranched polyglycerol polymer-coated silica nanoparticles
Published 2021“…dem improved as the Csur and pH decreased, with maximum values of 98.8% and 98.5% achieved at Csur = 0.05 g/L and a pH = 4, respectively. …”
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Application of magnetic nanoparticles for the removal of oil from oil-in-water emulsion: Regeneration/reuse of spent particles
Published 2021“…This change is due to the decrease in the emulsion stability and the formation of fine oil droplets. …”
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Application of Fe3O4 magnetite nanoparticles grafted in silica (SiO2) for oil recovery from oil in water emulsions
Published 2021“…Using an MDdose as low as 10 mg/L attained a %ηdem in the range of 93%–94.3% for O/W mixtures with Coil < 2000 mg/L, which slightly decreased to ∼90% for higher concentrations. …”
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Functionalization of silica-coated magnetic nanoparticles as powerful demulsifier to recover oil from oil-in-water emulsion
Published 2021“…This study presents an innovative approach for the preparation of Fe3O4 nanoparticles covered with SiO2 shell (denoted as Fe–Si-MNP), which were used to recover oil recovery from oil-in-water emulsion (O/W-emul). The Fe–Si-MNP were prepared with differing silica layer thicknesses (5 nm [Fe–Si-1], 8 nm [Fe–Si-2], 10 nm [Fe–Si-3], and 15 nm [Fe–Si-4]) and tested for the percentage of oil separation (%Soil) under different dosages (DMNP), oil concentration (Doil), surfactant dosages (Dsur), and pH. …”
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Mercury pollution in doha (Qatar) coastal environment
Published 1994“…1). Organic Hg (0.6 ng L?1) contributed only 5.0% of total Hg. Mercury showed a strong tendency to be associated with suspended matter in Doha coastal waters, as it represented about 73.0% of the total. …”
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Dynamics of Neisseria gonorrhoeae transmission among female sex workers and clients: A mathematical modeling study
Published 2024“…Increasing condom use from 10 % to 50 % lowers NG prevalence among FSWs, clients, and their spouses from 12.2 % to 6.4 %, 1.2 % to 0.5 %, and 0.4 % to 0.2 %, respectively. …”
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Effect of outdoor temperature on the power-conversion efficiency of newly synthesized organic photosensitizer based dye-sensitized solar cells
Published 2018“…The results indicate that DSSC shows power conversion efficiency of 2.58% at 25 °C under air mass (AM) 1.5 G illumination at 100 mW/cm2. It has also been found out that the efficiency of DSSCs drops with the rise of temperature. …”
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Thermoelectric properties of SbNCa3 and BiNCa3 for thermoelectric devices and alternative energy applications
Published 2014“…The maximum values of thermal conductivity are 92×1014 W/m K s and 88×1014 W/m K s for SbNCa3 and BiNCa3 respectively at a temperature of 900 K. …”
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