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481
Foamed phase change materials based on recycled polyethylene/paraffin wax blends
Published 2021“….% of paraffin wax (PW) and foamed by 1,1′-azobiscarbamide. The protection of pores’ collapse during foaming process was insured through chemical cross-linking by organic peroxide prior foaming. …”
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482
Conversion of Organic Municipal Wastes into Biochars and their Effect on Fertility Parameters of Normal and Sabkha Soils of Qatar
Published 2016“…To each pot, sufficient amount of 0.25-mm sieved biochar was mixed with soil to yield carbon to soil ratios of 0, 1, and 2% (wt/wt). Box-Behnken experimental design was used instead of the full factorial to decrease the number of treatments to a manageable level (126 treatments) with three replications at the center. …”
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483
Green handover with a hybrid satisfaction mechanism
Published 2013“…Green communications have emerged as one of the most important trends in wireless communications because of its several advantages of interference reduction, battery life increase and electrical bill cut. …”
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484
Low levels of Vitamin D during pregnancy associated with gestational diabetes mellitus and low birth weight: results from the MAASTHI birth cohort
Published 2024“…For every one-unit increase in Vitamin D levels, Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) decreased by nearly 18%. …”
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485
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486
Thermal and mechanical characterization of injection moulded high density polyethylene/paraffin wax blends as phase change materials
Published 2014“…The blends were prepared from 5 to 50vol. % of paraffin wax employing a twin-screw extruder. …”
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487
Improvement of both lipid and biomass productivities of Qatar Chlorocystis isolate for biodiesel production and food security
Published 2018“…Indeed, culturing QUCCCM14 using f/2 medium with 10× NaH2PO4 (0.15 g L−1 NaNO3 and 5.6 mg L−1 NaH2PO4) resulted in an improvement of 3.178 folds the lipid productivity reaching 56.121 mg L−1 day−1 and enhanced the biomass productivity reaching 141.363 mg L−1 day−1, simultaneously. …”
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488
Synthesis of High-Antifouling and Antibacterial Ultrafiltration Membranes Incorporating Low Concentrations of Graphene Oxide
Published 2020“…The pure water permeability (PWP) decreased with loadings of GO from 181.7 L.m-2.h-1.bar-1 of pure PSF to 181.1 and 167.4 L.m-2.h-1.bar-1 with 0.02 and 0.1 wt.% GO respectively. …”
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489
Individual and Synergic Effects of Phosphorus and Gibberellic Acid on Organic Acids Exudation Pattern, Ultra-Structure of Chloroplast and Stress Response Gene Expression in Cu-Stre...
Published 2022“…Results revealed that C. capsularis tolerated up to 200 mg kg−1 Cu concentration without a significant (P < 0.05) decrease in biomass, plant height and root length but further increase in Cu concentration from 400 mg kg−1 exhibited a significant reduction in plant height, root length, stem fresh weight, stem dry weight, plant fresh weight and plant dry weight. …”
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490
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491
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492
Thermally conductive polyethylene/expanded graphite composites as heat transfer surface: Mechanical, thermo-physical and surface behavior
Published 2020“…This enhanced surface wettability was retained over a long time with only a 9% and 18% decrease in RF and corona plasma-treated samples' surface energy after two months. …”
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493
STRUCTURAL AND FUNCTIONAL APPROACHES TOWARD ACTIVITY RESTORATION OF NOVEL CYSTATHIONINE BETA-SYNTHASE MUTATIONS
Published 2024“…This reduced activity is consistent with both in vitro and in silico evidence, which indicates that the studied CBS mutations, except p.K72I, significantly decrease the overall protein's stability, which may represent the underlying cause of their pathogenicity. …”
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494
Optimizing nutrient removal of moving bed biofilm reactor process using response surface methodology
Published 2020“…Under optimized conditions (HRTtotal = 12.8 hr and R = 1.5) significant chemical oxygen demand removal (%CODremoval), %TNremoval and %TPremoval of 95.5%, 96.2%, 94.70% were attained. …”
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495
Removal of toxic pollutants from produced water by phytoremediation: Applications and mechanistic study
Published 2019“…This conclusion is verified by the shifting or disappearance in transmission bands at 1028, 1334, 2852 and 2921 cm−1. After PW treatment, the soil with sandy-loam texture used in this study showed a huge accumulation of sodium ions up to 17.6 × 103 mg/Kg. …”
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496
Outdoor scale-up of Leptolyngbya sp.: Effect of light intensity and inoculum volume on photoinhibition and -oxidation
Published 2021“…Indoor, the strain was capable of growing at light intensities of up to 5600 µmol photons/m2/s, at inoculation densities as low as 0.1 g/L (10% inoculation volume vol/vol). Levels of chlorophyll and phycocyanin showed a significant decrease within the first 24 h, indicating some level of photooxidation, however, both were able to recover within 72 h. …”
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497
Cultivating microalgae in desert conditions: Evaluation of the effect of light‐temperature summer conditions on the growth and metabolism of nannochloropsis qu130
Published 2021“…In the Qatar desert the temperature varies widely, typically between 10° and 45 °C There are also wide variations in light intensity, with values of over 1500 μmolhν.m−2s−1 in summer. A study of the effects of these thermal and light fluctuations is therefore essential for large‐scale outdoor production systems, especially during the summer when temperature and light fluctuations are at their highest. …”
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498
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499
Concrete Pavement Truck Equivalence Factors For Upgrades
Published 1999“…Presented in this paper are the upgrade truck equivalence factors for single unit trucks of type, 1.2 and 1.22 which are not covered by AASHTO. The equivalency factors for front and rear axles of single unit trucks were developed using AASHO Road Test equation after considering the decrease in front axle load and the increase in rear axle load due to the axle load redistribution on upgrades. …”
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500
Changes in Copepod Community Structure in Response to Land-Based Activities along Alexandria Coastline, Mediterranean Sea
Published 2000“…Industrial discharge exerted the highest impact on the copepod population by decreasing its density to less than 500 ind./m3. Despite the decrease m copepod abundance during high flow of sewage, the impacted area sustained the maximum copepod density low discharge i.e. 11,222 ind.…”
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