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nn decrease » _ decrease (Expand Search)
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744
Evacuated tube heat pipe solar collector for Encontech engine-driven reverse osmosis solar desalination
Published 2020“…The maximum energetic efficiency of 52.5% is obtained for h vacuum (1 W/m2 K). Obtained results further demonstrate that the energetic and exergetic performances of the ETHPSC are higher at T i = 50°C. …”
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745
Utilization of Emergency Services by Children with Asthma in Qatar
Published 2022“…Background: Asthma is a leading chronic disease in children worldwide, which if left untreated or poorly controlled, can lead to altered lung function and poor quality of life. 1 Early detection and improved control of asthma are recommended to decrease utilization of emergency services and hospitalizations. …”
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Heat transfer measurements of Polyalpha-Olefin- boron nitride nanofluids for thermal management and lubrication applications
Published 2020“…Heat transfer experiments are conducted for both the PAO base fluid and nanofluid as a function of Reynolds number. It is found that PAO/hBN nanofluids exhibit Newtonian behavior as a function of temperature (from −20 to 70 °C) and volume concentration (0.25–1%). …”
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748
Extraction and characterization of biofunctional lignocellulosic fibers from Pulicaria undulata plant and the effect of alkali treatment on their bio-physicochemical properties
Published 2024“…The raw fibers of P. undulata were rich in cellulose (36.2 %), followed by hemicellulose (30.3 %), lignin (16.2 %), moisture (11.1 %), and pectin (3.9 %). …”
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749
Responses of lichen communities to 18 years of natural and experimental warming
Published 2017“…Key Results Between 1993 and 2013, mean annual temperature increased about 2 °C. Both site and experimental warming had a significant effect on cover, species richness, effective number of species evenness of lichens, and total plant canopy cover. …”
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750
Effects of Combined Calcium Hypochlorite and Chlorine Dioxide on Drinking Water Quality in Qatar and Disinfection by Products Formation
Published 2016“…The bottles were spiked with Ca(ClO)2 in sequence to give concentration of 0.2, 0.4, 0.6, 0.8, 1.0, and 1.2 mg/l as free chlorine. …”
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Improvement of ternary recycled polymer blend reinforced with date palm fibre
Published 2014“…Maleic anhydride (MA) was used as the compatabilizer (1 and 2wt%) and the effect of compatabilizer on the blend matrix composites was studied. …”
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754
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Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
Published 1995“…A monotonic decrease in the sheet rcsostance with increasing energy density for all values of E > 10 J/cm2. …”
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Pd nanocrystals encapsulated in MOF-derived Ni/N-doped hollow carbon nanosheets for efficient thermal CO oxidation: unveiling the effect of porosity
Published 2023“…The obtained Pd/Ni-MOF-HNC possesses hollow carbon sheets with a great surface area (153.05 m2 g−1), pore volume (0.12 cm3 g−1), rich Pd/Ni-Nx active sites, Ni-metal defects, rich N-content (7.53 at%), mixed Pd/Ni-oxide phases, and uniformly distributed ultra-small Pd nanocrystals (7.03 ± 1.10 nm); meanwhile, Pd/Ni-MOF-NC formed without etching had no porosity and less Ni-metal defects. …”
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Influenza prevalence and vaccine efficacy among diabetic patients in Qatar
Published 2023“…Among DM patients, influenza was the most prevalent respiratory pathogen at 48.9%. Influenza virus A (IVA) was the most circulating type, contributing to 38.4%, followed by IVB contributing to 10.4% of total respiratory infections. …”
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