College of Arts & Sciences: Recent submissions
Now showing items 261-280 of 3535
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Assessment of carbon footprint in Qatar's electricity sector: A comparative analysis across various building typologies
( Elsevier , 2023 , Article)Carbon footprint (CF) estimation has emerged as an integral tool for greenhouse gas (GHG) management, providing direction for emission reduction strategies and verification processes. Since capturing the full lifecycle ... -
UAVs for improving seasonal vegetation assessment in arid environments
( Frontiers Media SA , 2024 , Article)In the last few decades, revegetation strategies for ecosystem restoration have received great attention in dryland studies, especially those related to the restoration and revegetation of native desert plants to combat ... -
Navigating Cyclone Threats: A Forecast Approach Using Water Streams’ Physical Characteristics as an Indicator to Predict High Risk Potential Areas in the Sultanate of Oman
( Springer Nature , 2024 , Article)Tropical cyclone is a natural disaster phenomenon that is considered one of the main challenges for human populations in many countries across the globe. This study investigates the Tropical Cyclone “Shaheen” that hit Oman ... -
Navigating the confluence of artificial intelligence and education for sustainable development in the era of industry 4.0: Challenges, opportunities, and ethical dimensions
( Elsevier , 2024 , Article)The emergence of Industry 4.0 marks a transformative era for businesses and industries, characterized by advanced technologies like automation, Internet of Things (IoT), artificial intelligence (AI), smart factories, and ... -
Evaluating the impact of the COVID-19 pandemic on the geospatial distribution of buildings' carbon footprints associated with electricity consumption
( Elsevier , 2024 , Article)The carbon footprint (CF) linked to electricity consumption in buildings has become a significant environmental issue because of its significant role in greenhouse gas emissions. This study seeks to assess and examine the ... -
Geospatial assessment of the carbon footprint of water and electricity consumption in residential buildings in Doha, Qatar
( Elsevier , 2024 , Article)The process of estimating the carbon footprint (CF) has become a key method for managing greenhouse gas (GHG) emissions, guiding strategies for emission reduction and validating those strategies. Given the complexity of ... -
Examining the potential and effectiveness of water indices using multispectral sentinel-2 data to detect soil moisture as an indicator of mudflow occurrence in arid regions
( Elsevier , 2024 , Article)This study aims to evaluate the performance and effectiveness of six spectral water indices - derived from Multispectral sentinel-2 data - to detect soil moisture and inundated area in arid regions to be used as an indicator ... -
Enhancing vulnerability assessment through spatially explicit modeling of mountain social-ecological systems exposed to multiple environmental hazards
( Elsevier , 2024 , Article)The evaluation of the vulnerability of coupled socio-ecological systems is critical for addressing and preventing the adverse impacts of various environmental hazards and devising strategies for climate change adaptation. ... -
Biolubricant Synthesis by Additization and Chemical Modification from Lipid-Rich Brackish Coelastrella sp. Using a Biorefinery Approach
( American Chemical Society , 2023 , Article)With a sizable market share and widespread use in automotive and industrial applications, biolubricants are produced from the oils of terrestrial plants that have undergone chemical modification or additive addition. ... -
Corrigendum to "Microalgae: A potential bioagent for treatment of emerging contaminants from domestic wastewater" [Chemosphere 351, March 2024, 1-16 141245] (Chemosphere (2024) 351, (S0045653524001383), (10.1016/j.chemosphere.2024.141245))
( Elsevier , 2024 , Other)Authors would like an amendment in the Acknowledgement section as per our open access funder policies. Kindly add the below statement in acknowledgement section. <Acknowledgement: The authors would like to acknowledge the ... -
An exploratory study on medications in Qatar homes
( Dove Medical Press Ltd , 2011 , Article)Background: Drug therapy is the most often used intervention for treatment and prevention of disease. However, if used inappropriately, drugs can cause more harm than good. Improper drug storage and disposal can have a ... -
Ion beam modification of surface properties of polyethylene
( Elsevier , 2003 , Conference Paper)Improvement of polymer tribological properties is an essential issue for their application when used as parts of machines or artificial human joints. Ion implantation is a very promising technique in this respect. This ... -
Mechanical and thermal properties of gamma-ray irradiated polyethylene blends
( Elsevier , 2003 , Conference Paper)In this work, the results obtained by gamma-ray irradiation of polyethylene (PE) blends are presented. The blends were produced by injection molding at 220°C with different compositional ratios, i.e. 100/0, 15/85, 25/75, ... -
Compositional transformations in ion implanted polymers
( Elsevier , 2005 , Conference Paper)Changes of surface layer composition produced by ion bombardment of polyethylene and polypropylene samples were studied. These materials are under consideration for load bearing surfaces in biological and technical ... -
Study on ferroelastic characteristics of gamma irradiated lithium potassium sulfate crystal
( Elsevier , 1999 , Article)A detailed study of the optical absorption vs. γ-irradiation dose for lithium potassium sulfate crystal, LiKSO4 cut out perpendicular to x, y and z directions is presented. The optical density was measured within the ... -
Temperature and electric field effects on the dielectric dispersion of modified polyvinyl chloride
( Elsevier , 2003 , Article)The effect of electric field on the dielectric dispersion of modified polyvinyl chloride (PVC) has been investigated. The applied direct current (DC) field strength was ranging from 0 to 104 V cm−1. The complex permitivity ... -
Surface layer modification of ion bombarded HDPE
( Elsevier , 2004 , Article)Press-moulded, high density polyethylene (HDPE) samples were subjected to ion bombardment and effects of the modification studied. He+ ions of energy 100 keV or Ar+ ions of energy 130 keV were applied in the range of dose ... -
The effects of ion bombardment of ultra-high molecular weight polyethylene
( Elsevier , 2006 , Article)Ion bombardment is a suitable tool to improve tribological properties of polymers. In this study UHMWPE samples were bombarded with 130keV He ions to the fluences ranging from 1×1014 to 2×1016cm−2. RBS and NRA techniques ... -
Effectiveness of two and three doses of COVID-19 mRNA vaccines against infection, symptoms, and severity in the pre-omicron era: A time-dependent gradient
( Elsevier , 2024 , Article)BackgroundVaccines were developed and deployed to combat severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. This study aimed to characterize patterns in the protection provided by the BNT162b2 and ... -
Eutrophication in the coastal waters of Alexandria following the increase in phosphorus load
( Parlar Scientific Publications , 1996 , Article)Samples from the coastal waters of Alexandria during 1991-1993 indicate a remarkable increase in the phosphorus load from 870 to 1140 kg y-1 compared to 567 kg y-1 in 1986 raising the average phosphorus from 1.01 to 1.47 ...