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السجلات المعروضة 3451 -- 3470 من 4689
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Relationship Between Tree Size, Sediment Mud Content, Oxygen Levels, and Pneumatophore Abundance in the Mangrove Tree Species Avicennia Marina (Forssk.) Vierh
( MDPI , 2021 , Article)Mangroves are important in protecting and stabilizing coastal zones. Pneumatophores of the mangrove species Avicennia marina can form a large aboveground complex of aerial roots, which are important in supporting mangrove ... -
Relative contribution of plant traits and soil properties to the functioning of a temperate forest ecosystem in the Indian Himalayas
( Elsevier , 2020 , Article)© 2020 Elsevier B.V. Plant-soil interactions are a major determinant of changes in forest ecosystem processes and functioning. We conducted a trait-based study to quantify the contribution of plant traits and soil properties ... -
Relative infectiousness of SARS-CoV-2 vaccine breakthrough infections, reinfections, and primary infections.
( Springer , 2022 , Article)SARS-CoV-2 breakthrough infections in vaccinated individuals and in those who had a prior infection have been observed globally, but the transmission potential of these infections is unknown. The RT-qPCR cycle threshold ... -
A reliability-based weather-responsive variable speed limit system to improve the safety of rural highways
( Elsevier , 2022 , Article)Weather-responsive Variable Speed Limit (WRVSL) systems treat speed limits as weather-dependent random variables, as opposed to the conventional static speed limits. This study (i) evaluates drivers’ response to a fixed ... -
Remarkable improvement in properties of NI-B coatings by the addition of mixed oxide nanoparticles
( Association for Iron and Steel Technology, AISTECH , 2015 , Conference Paper)A comparison of properties of Ni-B and Ni-B-ZrO2-Al2O3 nanocomposite coatings synthesized through electrodeposition process is presented to elucidate the beneficial role of addition of mixed nanoparticles of ZrO2 and Al2O3 ... -
Remote sensing of desertification and study of temporal variability of aeolian deposits in parts of the Arabian Desert for sustainable development in an arid environment
( Academic Press Inc. , 2023 , Article)Aeolian deposit in part of the Arabian Desert is mapped using ASTER data to understand desertification, land encroachment, and degradation, and to assess agricultural development in arid regions. In this study, the ... -
Remote sensing of inland Sabkha and a study of the salinity and temporal stability for sustainable development: A case study from the West coast of Qatar
( Elsevier , 2021 , Article)The inland sabkha of the Arabian Gulf is important to study for the occurrence of minerals, rocks, soil salinity, and stability of the sabkha due to the high demand for infrastructure and agriculture development region. ... -
Remotely induced storm effects on the coastal flooding along the southwest coast of India
( Elsevier , 2023 , Article)The southwest coast of India is exposed to long-period swells propagated from the South Indian Ocean during pre- and post-monsoon seasons. Although swells from the Southern Ocean and Atlantic Ocean were identified in the ... -
Removal of heavy metals from wastewater by aerogel derived from date palm waste
( Elsevier , 2024 , Article)Cellulose that has been sourced from date palm leaves as a primary component was utilised. This cellulose served as the foundational material for the development of an aerogel composite. During this process, MXene (Ti3C2Tx) ... -
Removal of Lead Ions from Aqueous Solutions Using Polyaniline Polystyrene Nanocomposites
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Water pollution is an issue of grave importance worldwide, especially in countries that boast of a large number of industries. High concentration of heavy metal ions such as lead, nickel, etc are often found in industrial ... -
Removal of metronidazole from wastewater by Fe/charcoal micro electrolysis fluidized bed reactor
( Elsevier Ltd , 2019 , Article)The aim of the research was to investigate the removal of metronidazole from aqueous solutions by Fe/charcoal micro-electrolysis fluidized bed reactor. The effective variables influencing the metronidazole removal including ... -
Removal of nitrates from water through the use Chia seed
( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)In this research, Chia seeds will be collected from local food manufacturers; Chia seeds were used and treated by natural methods “Green process” then converted into new material. The experimental conditions will be optimized ... -
Removal of Oil Content from Oil-Water Emulsions Using Iron Oxide/Bentonite Nano Adsorbents
( Elsevier Ltd , 2020 , Article)Water scarcity is a challenge that is faced worldwide to secure sustainable good quality water resources. Produced water, associated with the production of gas and oil, usually comes as oil contaminated water, creating ... -
Removal of toxic pollutants from produced water by phytoremediation: Applications and mechanistic study
( Humana Press Inc , 2019 , Article)Elsevier Ltd In this study, a greenhouse experiment of complete randomized design with three replications was conducted to investigate the potential of Medicago sativa, Zea mays, Helianthus annus, Sorghum bicolor, Phragmites ... -
Renegotiating the Ruling Bargain: Selling Fiscal Reform in the GCC
( Middle East Institution , 2016 , Article)Built upon depletable reservoirs of oil and natural gas, the petro-states of the Arab Gulf have, since their beginning, always had one eye fixated on the end: the exhaustion of their life-giving natural resources, and ... -
Repair of Heat-Damaged RC Beams Using Micro-concrete Modified with Carbon Nanotubes
( Korean Society of Civil Engineers , 2021 , Article)This paper investigates the use of micro-concrete modified with carbon nanotubes (CNTs) for the repair of heat-damaged reinforced concrete (RC) beams. Ten RC beams were cast and then subjected to elevated temperature of ... -
Reporting of RT-PCR cycle threshold (Ct) values during the first wave of COVID-19 in Qatar improved result interpretation in clinical and public health settings
( Microbiology Society , 2022 , Article)Introduction. The cycle threshold (Ct) value in real-time PCR (RT-PCR) is where a target-specific amplification signal becomes detectable and can infer viral load, risk of transmission and recovery. Use of Ct values in ... -
Representation learning using deep random vector functional link networks for clustering: Representation learning using deep RVFL for clustering
( Elsevier Ltd , 2022 , Article)Random Vector Functional Link (RVFL) Networks have received a lot of attention due to the fast training speed as the non-iterative solution characteristic. Currently, the main research direction of RVFLs has supervised ... -
Reprint of “The effect of site-specific spectral densities on the high-dimensional exciton-vibrational dynamics in the FMO complex”
( Elsevier B.V. , 2018 , Article)© 2017 Elsevier B.V. The coupled exciton-vibrational dynamics of a three-site model of the FMO complex is investigated using the Multi-layer Multi-configuration Time-dependent Hartree (ML-MCTDH) approach. Emphasis is put ... -
Reproductive effort of the European clam Ruditapes decussatus (Linnaeus, 1758): influence of different diets and temperatures
( Taylor & Francis , 2016 , Article)Ruditapes decussatus is a species of importance to aquaculture. For hatcheries to consistently produce spat it is essential to develop broodstock conditioning techniques. Food and temperature are the main factors that ...
