Browsing Research Units by Title
Now showing items 668-687 of 4974
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Charge-trapping capability and AC conductivity at different humidities of poly(ethyleneimine)-TiO2-anthocyanin modified cellulose fibres.
( Springer Verlag , 2018 , Article)Modified cellulose materials are finding increasing application in electronics, because of the need for more environmental-friendly electronic circuits. The papers prepared from poly(ethyleneimine)–TiO2–anthocyanin-modified ... -
Chemical Characterization and Source Identification of Beached Oil from Two Areas Along the North-Western Coast of Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Over the years there have been several reports of oil spills affecting particularly the northern coast of Qatar. In most cases, the source of oil spills is not identified. The spilled oils are very resistant to degradation ... -
Chemical composition of indoor and outdoor PM2.5 in the eastern Arabian Peninsula
( Springer , 2024 , Article)Water-soluble and trace metal species in fine particulate matter (PM2.5) were determined for indoor and outdoor environments in Doha, Qatar. During the study period, PM2.5 concentrations showed significant variability ... -
Chemical Composition, Antibacterial Activity using Micro-broth Dilution Method and Antioxidant Activity of Essential Oil and Water Extract from Aerial Part of Tunisian Thymus algeriensis Boiss. & Reut.
( Taylor & Francis , 2021 , Article)In this study, we investigated the chemical composition, antioxidant and antibacterial activities of essential oil and aqueous extract from Thymus algeriensis Boiss. & Reut growing in Tunisia. GC/MS analysis of essential ... -
Chemical Composition, Antioxidant Capacity, and Anticancerous Effects against Human Lung Cancer Cells of a Terpenoid-Rich Fraction of Inula viscosa
( MDPI , 2024 , Article)Inula viscosa is a widely used plant in traditional Mediterranean and Middle Eastern medicine for various illnesses. I. viscosa has been shown to have anticancer effects against various cancers, but its effects against ... -
Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine
( John Wiley and Sons Ltd , 2020 , Article)In the present study, the reaction kinetics of carbon dioxide (CO2) with two blends of N-methyldiethanolamine; potassium salts of taurine and potassium salts of glycine were investigated. The experiments were performed ... -
Chemical modification of graphene with grape seed extract: Its structural, optical and antimicrobial properties
( Elsevier Ltd , 2019 , Article)Herein, we modified for the first time thermally reduced graphene oxide (TRG) using grape seed extract (GSE), by simple probe sonication method. The effect of GSE on the structural changes of TRG has been carefully analyzed ... -
Chemical properties of garnet nanofluids
( Elsevier Ltd , 2020 , Conference Paper)A lubricant is a substance introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. The lubricating property of lubricating oils is increased by ... -
Chemically synthesized carbon nanorods with dual polarized emission
( American Chemical Society , 2019 , Article)We realized the synthesis of carbon nanorods—monodisperse colloidal particles with a length of 50 nm and a width of 20 nm—which can be considered an addition to the family of light-emitting carbon-based nanostructures. ... -
Chemokine-cytokine networks in the head and neck tumor microenvironment
( MDPI , 2021 , Article Review)Head and neck squamous cell carcinomas (HNSCCs) are aggressive diseases with a dismal patient prognosis. Despite significant advances in treatment modalities, the five-year survival rate in patients with HNSCC has improved ... -
Childcare in Bahrain: The Role of Extended Family and Domestic Workers
( Gulf Studies center - College of Arts & Sciences - Qatar University , 2023 , Conference Paper)This paper explores the role of extended family and domestic workers in childcare among Bahraini families, delving into parental responsibilities, childcare arrangements, and individuals' navigation between family, care, ... -
China in the Middle East: Foreign Direct Investment, Economic Transformation, and Regional, Development
( Gulf Studies center - College of Arts & Sciences - Qatar University , 2020 , Conference Paper)This paper unpacks the complicated manners in which Chinese investment has taken shape in the Middle East, especially the member states of the Gulf Cooperation Council (GCC). Rather than focusing on highly emotive (but ... -
China's economic and political presence in the Middle East and South Asia
( Routledge , 2022 , Book)This book explores a range of key issues connected to China's relations with countries in the Middle East and South Asia. It discusses economic and political connections, and projects which have arisen as part of China's ... -
Chitin-based nanomaterials
( Elsevier , 2021 , Book chapter)Chitin- and chitosan-based materials have been increasingly used in various scientific advancements specifically in the field of nanotechnology for their therapeutic potential. They are biopolymeric polysaccharides with ... -
Chitosan as natural coagulant in hybrid coagulation-nanofiltration membrane process for water treatment
( Elsevier Ltd , 2016 , Article)Water treatment industries are exploring the possibility to use environmental friendly chemicals and to discover the potential of advanced treatment technology in order to achieve sustainable development. Hybrid ... -
Chitosan gold nanoparticles for detection of amplified nucleic acids isolated from sputum
( Elsevier , 2017 , Article)A platform for nucleic acid detection employing chitosan and chitosan coated gold nanoparticles (AuNPs) was developed. Mycobacterium tuberculosis (MTB) was used as a model target. MTB DNA was extracted from sputum using ... -
Chitosan/lignosulfonate nanospheres as "green" biocide for controlling the microbiologically influenced corrosion of carbon steel
( MDPI AG , 2020 , Article)In this work, uniform cross-linked chitosan/lignosulfonate (CS/LS) nanospheres with an average diameter of 150-200 nm have been successfully used as a novel, environmentally friendly biocide for the inhibition of mixed ... -
Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs
( American Chemical Society , 2022 , Article)The rheology of a gel system composed of polyacrylamide (PAM) and chitosan is studied under typical reservoir conditions. The impacts of the degree of chitosan deacetylation, temperature, and salinity on the gelation ... -
Chlorophyll-a concentrations in the Arabian Gulf waters of arid region: A case study from the northern coast of Qatar
( Elsevier , 2022 , Article)Remote sensing of spectrally active Chlorophyll-a (Chl-a) in the gulf water of an arid region is important to understand the spatial and temporal variations of phytoplankton and biomass in the water. This study characterizes ... -
Choice and expenditure: A double hurdle model of private tutoring in Qatar
( Elsevier , 2021 , Article)Deciding whether to use private tutoring services is now a common choice many households are facing globally. This paper presents new evidence for Qatar's case to shed light on the demand for private tutoring. The household ...