بدائل البحث:
_ bed » _ red (توسيع البحث)
_ fe » _ e (توسيع البحث)
decrease » decreased (توسيع البحث), increase (توسيع البحث)
_ bed » _ red (توسيع البحث)
_ fe » _ e (توسيع البحث)
decrease » decreased (توسيع البحث), increase (توسيع البحث)
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Correlating the rheological and magneto-optical properties of cobalt substituted magnetite ferrofluids (Co<sub>x</sub>Fe<sub>1−x</sub>Fe<sub>2</sub>O<sub>4</sub>) with theoretical...
منشور في 2023"…An environmental friendly method of co-precipitation is applied to generate Co<sub>x</sub>Fe<sub>1−x</sub>Fe<sub>2</sub>O<sub>4</sub> with variable dopant concentration (x = 0–0.8), which is deeply investigated by structural and functional property analyses of the ferrofluids. …"
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Numerical analysis of spatial distribution of carbon in methane dry reforming over supported nickel catalyst in a packed bed reactor
منشور في 2024"…This study investigates carbon deposition during methane dry reforming over a nickel-based catalyst supported on alumina in a laboratory-scale fixed-bed reactor. Approximately 23.75 g of catalyst was used, and simulations were performed using COMSOL 6.2 software. …"
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Numerical analysis of spatial distribution of carbon in methane dry reforming over supported nickel catalyst in a packed bed reactor
منشور في 2025"…<p dir="ltr">This study investigates <u>carbon deposition</u> during <u>methane dry reforming</u> over a nickel-based catalyst supported on <u>alumina</u> in a laboratory-scale fixed-bed reactor. Approximately 23.75 g of catalyst was used, and simulations were performed using COMSOL 6.2 software. …"
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Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites
منشور في 2022"…Thus, by performing the present study, the potential of Fe<sub>3</sub>O<sub>4</sub>/zeolite imidazolate framework nanoparticles (Fe<sub>3</sub>O<sub>4</sub>@ZIF-8) was evaluated for the adsorption of benzene and toluene. …"
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A new insight into the separation of oil from oil/water emulsion by Fe<sub>3</sub>O<sub>4</sub>–SiO<sub>2</sub> nanoparticles
منشور في 2021"…For the oil recovery process, the Fe<sub>3</sub>O<sub>4</sub> was applied for the inhibition (i.e., decrease) of oil sedimentation, and the SiO<sub>2</sub> NPs were applied for wettability alteration and IFT reduction. …"
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Global, regional, and national burden of household air pollution, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021
منشور في 2025"…We first estimated the mean fuel type-specific concentrations (in μg/m3) of fine particulate matter (PM2·5) pollution to which individuals using solid fuels for cooking were exposed, categorised by fuel type, location, year, age, and sex. …"
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Application of Fe<sub>3</sub>O<sub>4</sub> magnetite nanoparticles grafted in silica (SiO<sub>2</sub>) for oil recovery from oil in water emulsions
منشور في 2021"…<p dir="ltr">In this study, an innovative magnetic demulsifier (MD) was prepared by grafting a silica layer onto the surface of the Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (MNPs) using the modified Stober process. …"
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Application of Zn-ferrite towards thermochemical utilization of carbon dioxide: A thermodynamic investigation
منشور في 2021"…The decrease in the reduction temperature is significant when the ratio of the molar flow rate of inert sweep gas to the molar flow rate of ZnFe<sub>2</sub>O<sub>4</sub> increases from 10 to 30. …"
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Rapid mercury removal using living indigenous microalgal communities for water treatment applications
منشور في 2025"…Kinetic studies showed superior correlation with the pseudo-second-order model (R<sup>2</sup> > 0.996), with rate constants decreasing systematically from 767.5 to 216.0 g/mg·min as concentration increased, suggesting secondary chemical interactions may also contribute to the overall mechanism. …"
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Insights on the effect of water content in carburizing gas mixtures on the metal dusting corrosion of iron
منشور في 2022"…At later stage, the formation of oxide scale leads to an elevated concentration of H<sub>2</sub>O/OH molecules on the surface due to the decrease in Fe affinity to dissociate water. This results into blocking the Fe catalytic sites leading to lower C and O diffusion to the bulk of the sample.…"
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Ferroelectric Properties and Electrocaloric Effect in Dy2O3 Substitution on Lead-Free (Na0.5 Bi0.5)0.94 Ba0.06TiO3 Ceramic
منشور في 2023"…Higher stability of the ferroelectric (FE) phase was obtained at room temperature for the compositions y = 0.01, 0.02 and 0.05, with optimum values for y = 0.02 as remanent polarization Pr = 32µC/cm2, as well as piezoelectric coefficients d33 = 137 pC/N, kp = 0.27 and kt = 0.16, whereas a higher content of Dy (y = 0.08) induced a remarkable decrease of the ferroelectric and piezoelectric properties. …"
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13
Control of the Speed of a Light-Induced Spin Transition through Mesoscale Core-Shell Architecture
منشور في 2018"…A series of photomagnetic coordination polymer core-shell heterostructures, based on the light-switchable RbaCob[Fe(CN)6]c·mH2O (RbCoFe-PBA) as core with the isostructural KjNik[Cr(CN)6]l·nH2O (KNiCr-PBA) as shell, are studied using temperature-dependent powder X-ray diffraction and SQUID magnetometry. …"
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Enhanced oil recovery using hyperbranched polyglycerol polymer-coated silica nanoparticles
منشور في 2021"…<p dir="ltr">Functionalized Fe<sub>3</sub>O<sub>4</sub>–SiO<sub>2</sub> magnetic nanoparticles (Fe–Si-MNPs) coated with hyperbranched polyglycerol polymer were prepared and tested for oil recovery from oil in water (O/W) emulsions. …"
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The Effect of Experimental Recuperative and Appetitive Post-lunch Nap Opportunities, With or Without Caffeine, on Mood and Reaction Time in Highly Trained Athletes
منشور في 2021"…<h3>Purpose</h3><p dir="ltr">To investigate the effects of placebo (PLA), 20 min nap opportunity (N20), 5mg·kg<sup>−1</sup> of caffeine (CAF), and their combination (CAF+N20) on sleepiness, mood and reaction-time after partial sleep deprivation (PSD; 04h30 of time in bed; <i>study 1</i>) or after normal sleep night (NSN; 08h30 of time in bed; <i>study 2</i>).…"
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Recyclable polyaspartate-coated magnetic nanoparticles for sustainable control of calcite and barite scales in oilfield operations
منشور في 2026"…<p dir="ltr">Scale formation is a major challenge in hydrocarbon production, leading to decreased efficiency, equipment damage, and increased operational costs. …"
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Numerical investigation of MIL-101(Cr)/GrO composite performance in adsorption cooling systems
منشور في 2017"…The thermodynamic cycle performance of a two-bed adsorption system was evaluated using Simulink software to assess the performance of each composite. …"
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Evaluating the Successful Initiation of a New Dialysate Potassium Management Protocol: “Reduced Emergency Department Admission with Hyperkalemia in Hamad General Hospital Dialysis...
منشور في 2024"…It reduced ED and hospital admissions, reducing the bed crisis and financial costs.</p>…"
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Hyper-Hypo study: A Retrospective Observational Study of Neonatal Hypoglycemia Related to Maternal Hypertension
منشور في 2023"…</p> <h3>Method</h3> <p>The study was carried out at the tertiary Neonatal Intensive Care Unit (112 beds) of the Women’s Wellness and Research Center of Hamad Medical Corporation, Doha, Qatar. …"
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