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السجلات المعروضة 1185 -- 1204 من 4830
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Dry mesophilic anaerobic co-digestion of vegetable wastes with animal manures using leach bed reactor
( Springer Science and Business Media Deutschland GmbH , 2023 , Article)Anaerobic digestion is an environmentally sustainable technology for converting a variety of organic solid feedstocks to energy in the form of methane. To improve methane yield, the digestion of more than one waste is ... -
Dry sliding tribological properties of a hard anodized aa6082 aluminum alloy
( MDPI AG , 2020 , Article)The applications of aluminum and its alloys are still limited by low hardness and low wear resistance properties. Surface modifications, such anodizing and plasma electrolytic oxidation, represent a feasible way to overcome ... -
DSC investigation of the gelation kinetics of emulsified PAM/PEI system: Influence of surfactants and retarders
( Springer Netherlands , 2015 , Article)Water production in the oilfields has a negative impact on the production and economy. It is highly desired to shut off water paths without affecting the hydrocarbon zones. Polymer gels are frequently used for water control ... -
Dual cationic modified high Ni-low co layered oxide cathode with a heteroepitaxial interface for high energy-density lithium-ion batteries
( Elsevier , 2021 , Article)Lithium-ion batteries (LIBs) with high energy density, safety with longer service life, cost-effectiveness, and superior cycling stability is a demand to achieve the driving range of 300 miles per charge in electric vehicles ... -
Dual donor bulk-heterojunction to realize a quick and more sensitive organic visible photodector
( Springer , 2018 , Article)© 2018, Springer Science+Business Media, LLC, part of Springer Nature. We present herein, an interpenetrating organic dual donor bulk-heterojunction platform for promising visible light sensing utility. The photoactive ... -
Dual Role of Lanthanum Oxide Nanoparticles Functionalized Co-Polymeric Micelle for Extended Anti-Cancer Drug Delivery
( Wiley-Blackwell , 2019 , Article)In this study, the paclitaxel (PTX) - loaded A?B type di-block polymeric micelles poly xylitol sebacate-poly methylmethacrylic acid/Lanthanum Oxide/paclitaxel (PXS-PMAA/LO/PTX) were designed and Lanthanum oxide nanoparticles ... -
The Dual Specificity Role of Transcription Factor FOXO in Type 2-diabetes and Cancer
( Bentham Science Publishers , 2018 , Article Review)The FOXO (Forkhead box O) transcription factors are implicated in several signaling pathways and play a vital role in various cellular and physiological processes include for instance, ROS (reactive oxygen species) response, ... -
Dual targeting of carbonic anhydrase and vascular endothelial growth factor as an innovative approach in developing potential cancer-fighting candidates for the management of hypoxic malignancies
( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)Cancer poses a global challenge, and the Middle East is not immune to its impact. According to a 2020 published study, nearly half a million new cancer cases were detected in Arab countries, which equates to approximately ... -
Durability and Microstructure of Cement Composites Containing Qatar's Municipal Wastes
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Qatar produces more than 2.5 million tons of municipal waste per year with an average waste generation rate of 1.8 kg/day/capita which is one of the highest rates in the world. The rapid growth of municipal solid waste has ... -
Durability characteristics of high and ultra-high performance concretes
( Elsevier , 2021 , Article)Durability characteristics of high-performance concrete (HPC) and ultra-high performance concrete (UHPC) are evaluated in comparison to normal strength concrete (NSC). HPC and UHPC are cast using commonly available materials ... -
Durability of plain concrete prism strengthened with galvanized steel mesh and CFRP laminates under harsh environmental conditions
( Elsevier , 2021 , Article)This paper investigates the bond durability of recently developed galvanized steel mesh (GSM) strengthening systems compared to the carbon fiber-reinforced polymer (CFRP) composites under severe environments. Plain concrete ... -
Durability of Reinforced Concrete Beams Externally Strengthened with CFRP Laminates under Harsh Climatic Conditions
( American Society of Civil Engineers (ASCE) , 2021 , Article)This paper addresses the durability of reinforced concrete beams strengthened with carbon fiber-reinforced polymer (CFRP) laminates under natural and saline environments in the Arabian Gulf. Beam specimens were conditioned ... -
Duration of immune protection of SARS-CoV-2 natural infection against reinfection.
( Oxford University Press , 2022 , Article)The future of the SARS-CoV-2 pandemic hinges on virus evolution and duration of immune protection of natural infection against reinfection. We investigated duration of protection afforded by natural infection, the effect ... -
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar.
( Nature Research , 2022 , Article)SARS-CoV-2 Omicron BA.1 and BA.2 subvariants are genetically divergent. We conducted a matched, test-negative, case-control study to estimate duration of protection of the second and third/booster doses of mRNA COVID-19 ... -
Dynamic ensemble deep echo state network for significant wave height forecasting
( Elsevier Ltd , 2023 , Article)Forecasts of the wave heights can assist in the data-driven control of wave energy systems. However, the dynamic properties and extreme fluctuations of the historical observations pose challenges to the construction of ... -
Dynamic mechanical analysis and broadband electromagnetic interference shielding characteristics of poly (vinyl alcohol)-poly (4-styrenesulfonic acid)-titanium dioxide nanoparticles based tertiary nanocomposites
( Taylor and Francis Inc. , 2020 , Article)Novel tertiary nanocomposite films comprising of poly (vinyl alcohol) (PVA), poly (4-styrenesulfonic acid) (PSSA) and titanium dioxide (TiO2) nanoparticles (NPS) were prepared using simple solvent casting method. The ... -
Dynamic mechanical properties of PLA/PHBV, PLA/PCL, PHBV/PCL blends and their nanocomposites with TiO2 as nanofiller
( Elsevier , 2015 , Article)The effect of blending and the addition of small amounts of TiO2 nanoparticles on the dynamic mechanical properties of PLA/PHBV, PLA/PCL and PHBV/PCL blends is reported in this paper. The storage modulus of the PLA/PHBV ... -
Dynamic Parametric and Nonparametric Hedging: Evidence from the Arab Gulf Equity Markets
( EuroJournals , 2017 , Article)This paper examines the optimal hedging strategies in the Arab Gulf equity markets using a parametric and a nonparametric dynamic approaches in modeling the conditional variances and covariances of equity returns. The ... -
Dynamic security metrics for measuring the effectiveness of moving target defense techniques
( Elsevier Ltd , 2018 , Article)Moving Target Defense (MTD) utilizes granularity, flexibility and elasticity properties of emerging networking technologies in order to continuously change the attack surface. There are many different MTD techniques proposed ... -
Dynamic travel information strategies in advance traveler information systems and their effect on route choices along highways
( Elsevier , 2020 , Article)Advance Traveler Information Systems (ATIS) inform drivers about traffic incidences and expected travel times/ delays en-route. An online computer study was conducted in Qatar to investigate drivers' willingness ...