Browsing by Subject "Nitrogen"
Now showing items 1-13 of 13
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A mathematical model for carbon fixation and nutrient removal by an algal photobioreactor
( Elsevier Ltd , 2016 , Article)A comprehensive mathematical modeling method for Chlorella vulgaris (Cv) has been developed to assess the influence of nutrient concentration (total nitrogen TN= 28-207 and total phosphorus TP= 6-8mgL 1) and irradiation ... -
A template-catalyzed: In situ polymerization and co-assembly strategy for rich nitrogen-doped mesoporous carbon
( Royal Society of Chemistry , 2018 , Article)N-doped mesoporous carbon materials are greatly useful in adsorption, catalysis and energy storage. Controlled synthesis of such materials with both high nitrogen content and desired pore structures remains a great challenge. ... -
Assessment of algae-based wastewater treatment in hot climate region: Treatment performance and kinetics
( Institution of Chemical Engineers , 2020 , Article)This study evaluated the use of microalgae for wastewater treatment in hot climate regions. The growth rates of C. vulgaris (C.v.) and N. oleoabundans (N.o.) at 36 °C were studied in primary effluent (PE), secondary effluent ... -
Characteristics-based model predictive control of selective catalytic reduction in diesel-powered vehicles
( Elsevier Ltd , 2016 , Article)In heavy-duty diesel exhaust systems, selective catalytic reduction (SCR) is used to reduce NOx to nitrogen to meet environmental regulations. Diesel exhaust after-treatment involves a set of components that are best ... -
Detection of DNA Bases via Field Effect Transistor of Graphene Nanoribbon with a Nanopore: Semi-empirical Modeling
( Institute of Electrical and Electronics Engineers , 2021 , Article)DNA sequencing techniques are critical in order to investigate genes’ functions. Obtaining fast, accurate, and affordable DNA bases detection makes it possible to acquire personalized medicine. In this article, a ... -
Helium separation through polymeric membranes: selectivity targets
( Elsevier , 2016 , Article)Gas separation membranes have the potential to recovery and purify helium from natural gas. This can be through direct separation of helium from methane or as part of a natural gas liquefaction process where helium is ... -
Investigating chlorophyll and nitrogen levels of mangroves at Al-Khor, Qatar: an integrated chemical analysis and remote sensing approach. Environmental Monitoring and Assessment
( Springer Verlag , 2016 , Article)Mangroves are unique ecosystems that dominate tropical and subtropical coastlines around the world. They provide shelter and nursery to wide variety of species such as fish and birds. Around 73 species of mangroves were ... -
Nonenzymatic nitrogen-doped carbon nanofber-supported NiOx glucose sensor
( M Y U Scientific Publishing Division , 2017 , Article)The glucose electrooxidation reaction at NiOx nanoparticles loaded on a nitrogen-doped carbon nanofber (N-CNF)-modifed glassy carbon electrode (NiOx@N-CNF/GCE) in an alkaline medium was studied. The N-CNF was produced by ... -
Outwelling from arid mangrove systems is sustained by inwelling of seagrass productivity
( Inter-Research , 2014 , Article)Mangrove forest productivity is normally sustained by nutrients from terrestrial runoff, with freshwater inputs driving the resulting outwelling of production, but arid mangroves lack this input. The movement of material ... -
Performance Of Chlorella Vulgaris, Neochloris Oleoabundans, and mixed indigenous microalgae for treatment of primary effluent, secondary effluent and centrate
( Elsevier B.V. , 2016 , Article)The objective of this study was to investigate and compare the growth rate and treatment efficiency of Chlorella vulgaris, Neochloris oleoabundans and mixed indigenous microalgae for the removal of organic carbon, nitrogen ... -
Potential for green algae spirulina to capture carbon dioxide from gas stream
( TechConnect , 2016 , Conference Paper)This study evaluated the use of green algae Spirulina microalgae as a C02 capturing technology at different temperatures. The growth of Spirulina at 25 and 30◦C were studied in synthetic wastewater and its performance in ... -
Selective adsorption of carbon dioxide, methane and nitrogen using resorcinol-formaldehyde-xerogel activated carbon
( Springer New York LLC , 2017 , Article)Resorcinol–formaldehyde xerogel was prepared, carbonized and activated in specific conditions to form resorcinol–formaldehyde activated carbon xerogel (RF-ACX) that was to produce microporous nanoparticles. RF-ACX was used ... -
Tomato (Solanum lycopersicum) yield response to drip irrigation and nitrogen application rates in open-field cultivation in arid environments
( Elsevier , 2024 , Article)A field experiment at Qatar University's Agricultural Research Center examined how varying drip irrigation water and nitrogen levels affect tomato yield, quality, and water-use efficiency. The study employed a split-plot ...