Showing 61 - 80 results of 500 for search '(( 5 ((fold decrease) OR (mean decrease)) ) OR ( 50 ((per decrease) OR (a decrease)) ))', query time: 0.19s Refine Results
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    Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris by Alketife, Ahmed M.

    Published 2017
    “…1 and the maximum biomass produced was decreased more than three-fold to 0.5 g/L. The Box Behnken experimental design and response surface method were used to study the effects of the initial concentrations (P, N and C) on P and N removal efficiencies. …”
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    Preparation and characterization of chemically synthesized polyaniline–polystyrene blends as a carbon dioxide gas sensor by J., Bhadra

    Published 2013
    “…The SEM results of the above polymerized blends reflect the formation of spherical nanoparticles with diameter ranging from 50nm to 90nm with a decrease in PS concentration that facilitates the formation of clusters. …”
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  7. 67

    Environment Degradation and Economic Growth in the Qatar Economy: Evidence from a Markov Switching Equilibrium Correction Model by Charfeddine, Lanouar

    Published 2016
    “…After reaching a critical level of income, the spending on environment protection is increased, and hence environment degradation tend to decrease. …”
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  8. 68

    Turning point in COVID-19 severity and fatality during the pandemic: a national cohort study in Qatar by Chemaitelly, Hiam

    Published 2023
    “…The post-first omicron phase saw a drastic drop to 0.10 (95% CI 0.08 to 0.14) per 1000 person years, a 95.4% reduction. …”
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    Optimization of cultivation conditions for combined nutrient removal and CO2 fixation in a batch photobioreactor by Al Ketife, Ahmed MD

    Published 2017
    “…At 22% CO2 the Rc and μ decreased by around an order of magnitude, and nutrient removal also decreased to 79% and 50% for N and P, respectively. …”
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    The effect of density in larval rearing of the pullet carpet shell Venerupis corrugata (Gmelin, 1791) in a recirculating aquaculture system by Joaquim, S.

    Published 2014
    “…The mean survival, growth and metamorphic rate of V. corrugata larvae in RAS was higher (11.1%; 71.3 μm; 21.6% respectively) than in the Batch system, in all tested densities. …”
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  15. 75

    Dynamics of Neisseria gonorrhoeae transmission among female sex workers and clients: A mathematical modeling study by Houssein H., Ayoub

    Published 2024
    “…Increasing asymptomatic treatment coverage among FSWs from 0 % to 50 % decreases prevalence from 8.2 % to 0.4 %, 0.6 % to 0.1 %, and 0.2 % to 0.0 %, respectively, with very low prevalence when coverage exceeds 50 %. …”
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  16. 76

    A reliable and cost-effective planning framework of rural area hybrid system considering intelligent weather forecasting by Abazari, A.

    Published 2021
    “…Moreover, the growth of fuel cost causes an increase in the production of renewable energy resources (RESs) and a decrease in the usage of diesel engine generators. …”
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  17. 77

    Investigating the blood-host plasticity and dispersal of Anopheles coluzzii using a novel field-based methodology by Orsborne J.

    Published 2019
    “…Results: A collection strategy utilising a transect of mosquito traps placed at 50 m intervals allowed the collection of blood-fed Anopheles coluzzii from a malaria-endemic village of southern Ghana where human host availability ranged from zero (a cattle pen), increasing until humans were the dominant host choice (the middle of the village). …”
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  18. 78

    Dairy Wastage Footprint Analysis: A Farm-to-Fork Life Cycle Approach Across Dairy Supply Chain. by Al-Obadi, Muna

    Published 2021
    “…Although the dairy sector is a primary source of milk, cheese, yogurt, and cream, livestock's supply chain, including their wastes, releases a considerable greenhouse gas such as methane, nitrous oxide, and carbon dioxide. …”
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    Investigating the effect of the air inlet temperature on the combustion characteristics of a spark ignition engine fueled by biogas by Ebrahemi, Abdullah Ebrahem

    Published 2020
    “…The effect of varying the air manifold temperature from 25 to 50°C on the combustion characteristics as well as engine performance under full load condition in a SI engine fueled by gasoline and biogas mixtures has been investigated. …”
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