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181
Natural aging of shape stabilized phase change materials based on paraffin wax
منشور في 2017"…The addition of 15 wt% of EG to shape stabilized phase change materials (SSPCMs) containing 50 wt% of wax caused a decreasing in the leakage of wax by 50% over 210 days of natural aging. …"
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182
Investigation of Spatiotemporal Variability of Microplastics in Qatar's Cstal Environment
منشور في 2016"…Adsorbed PCBs and PAHs concentration showed a steady decrease with time, suggesting that contaminated pellets ending in the marine environment release their adsorbed contaminants in less contaminated seawaters revealing a complex OPs dynamic between plastics an seawater as a function of differential concentrations of pollutants and environmental conditions. …"
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183
Evidence by ac-conductivity for the higher mobility of boron (over aluminium)-associated Brønsted sites in boron-modified HZSM-5
منشور في 1996"…Therefore, for this particular sample the electric data have been discussed in greater detail. Ruling out the perturbing role of dc-conduction, by analysis at both high frequencies and low temperatures where the dc-conduction is minimum, reveals conductivity increasing in the order: B1ZSM-5<B2ZSM-5<B3ZSM-5<B4ZSM-5 and activation energy decreasing in the order: B1ZSM-5>B2ZSM-5>B3ZSM-5>B4ZSM-5. …"
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184
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185
Assessing Desalination Governance and the Promise of Technology in the Arabian Peninsula
منشور في 2023"…Sustainable desalination should address environmental problems across the entire lifecycle of desalination plants, and embed desalination activities within a larger good governance view. This chapter maps out solutions and best practices relevant for the desalination industry using the case study of the Arabian Peninsula. …"
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186
Sea water salinity detection using circular fringes formation based on diffraction of laser light
منشور في 2018"…The proposed system has more than 98% accuracy and 99% linearity. ? 2017 IEEE.…"
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187
Time Delay and Cost Overrun in Qatari Public Construction Projects
منشور في 2016"…On the other hand, cost overruns for drainage projects decreased with increasing contract prices. A significant effort was spent in collecting data on cost overruns and delays in public construction projects. …"
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188
Use and assessment of “e-plastics” as recycled aggregates in cement mortar
منشور في 2019"…The rest of the examined specimens’ physical properties measured (ρ, Φ, and WA) indicated, also, greater strength but lower ductility than the reference (standard) specimen. …"
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189
The Rise of Shale oil and Gas and the Renewables and the Prospects for the Future of GCC Energy Sector
منشور في 2019"…The rise of shale oil and gas, particularly in the United States, and its emergence as the largest producer of oil and an exporter of natural gas and a modest amounts of oil, has transformed the US as the net importer of oil and gas to an exporter in a short span of time. …"
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190
Application of Fe3O4 magnetite nanoparticles grafted in silica (SiO2) for oil recovery from oil in water emulsions
منشور في 2021"…Using an MDdose as low as 10 mg/L attained a %ηdem in the range of 93%–94.3% for O/W mixtures with Coil < 2000 mg/L, which slightly decreased to ∼90% for higher concentrations. …"
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191
Pore-scale simulation of fine particles migration in porous media using coupled CFD-DEM
منشور في 2022"…A faster and larger reduction in permeability was observed when a suspension of polydisperse particles was injected as opposed to a monodisperse suspension. 2022 The Authors…"
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192
Molecular dynamics of CH4/CO2 on calcite for enhancing gas recovery
منشور في 2022"…In fact, from pure methane to 20/80 CO2/CH4, methane adsorption increases linearly with pressure. For gas mixtures with a CO2 concentration higher than 40%, higher pressure has less impact on methane adsorption. …"
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193
Novel paclitaxel formulations solubilized by parenteral nutrition nanoemulsions for application against glioma cell lines
منشور في 2016"…The zeta potential of linoleic had a greater negative value than that of Intralipid.Loading efficiencies for paclitaxel were 70.4–80.2% and 44.2–57.4% for Clinoleic and Intralipid formulations, respectively. …"
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194
Trends of use of SGLT2 inhibitors in Qatar
منشور في 2021"…Background: Type 2 diabetes mellitus (T2DM) represents a growing health challenge in Qatar and worldwide. …"
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195
Novel techniques for improving NNetEn entropy calculation for short and noisy time series
منشور في 2023"…The NNetEn entropy calculation errors are less than 10% when SNR is greater than 30 dB, and entropy decreases with an increase in the bias component. …"
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196
Theoretical insight into effect of cation–anion pairs on CO2 reduction on bismuth electrocatalysts
منشور في 2020"…The adsorption energy (Eads) and work function (Wf) of the anions increases with decreasing anion size (i.e., Cl− > Br− > I−). On the other hand, the larger the cation size is, the higher is the Eads (i.e., Li+ < K+ < Cs+) but the lower is the Wf (i.e., Cs+ < K+ < Li+). …"
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197
Arabic gum as green agent for ZnO nanoparticles synthesis: properties, mechanism and antibacterial activity
منشور في 2017"…Lower amounts of Arabic gum showed a greater effect on the size and morphology as well as on the properties of ZnO NPs prepared by a sol–gel method. …"
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198
Location privacy preservation in secure crowdsourcing-based cooperative spectrum sensing
منشور في 2016"…The existing solutions present a high level of complexity which decreases the performance of the systems. …"
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199
Spectrofluorometric investigations on the solvent effects on the photocyclization reaction of diclofenac
منشور في 2023"…The solvent effects were qualitatively and quantitatively assessed employing various solvatochromic models, including multi-parameter linear regression analysis (MLRA). Interestingly, the MLRA results (R = 0.99) revealed that the photoconversion rate increases with increasing solvent polarizability (π*) and H-bond donor capability (α), whereas the rate decreases with increasing hydrogen-bond acceptor capability (β). …"
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200
Plant growth, metabolism and adaptation in relation to stress conditions. Vii. Respiration, nitrogen and proline contents in french bean and maize plants as influenced by salinity
منشور في 1989"…Thus, whereas proline as well as amino- and total soluble -N contents increased, contents of protein- and total -N decreased; the magnitude of these changes appeared to be a function of the concentration of Na2S04 used. …"
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