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Novel Wire Gripper for Robotics Picking of Small Green Parts From Powder Bed of Binder Jet Metal Additive Manufacturing
منشور في 2025"…The adaptable gripper system fits different part geometries to decrease the chance of component deformation or fracturing. …"
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Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy‐combustion supercritical CO<sub>2</sub> intercooled and reheated cycles under design and off‐d...
منشور في 2022"…<p dir="ltr">This study presents comprehensive energetic, exergetic, exergoeconomic, and economic (4E) performance analyses for four direct oxy‐combustion (DOC) supercritical carbon dioxide (sCO2) power cycles at design, off‐design, and part‐load conditions. These cycles include the dual recuperator cycle (DRC), intercooling cycle (ICC), partial intercooling cycle (PIC), and reheating cycle (RHC). …"
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Part II.: Dissimilar friction stir welding of nickel titanium shape memory alloy to stainless steel – microstructure, mechanical and corrosion behavior
منشور في 2021"…Tensile testing of the weld showed a small initial plateau region, characteristic of shape memory alloys (SMAs) arising from NiTi part of the weld. Importantly, the transformation temperatures of NiTi, measured by differential scanning calorimetry (DSC) from different weld zones, varied by no more than 4 °C. …"
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Psychological inoculation against problematic social media use among adolescents: An experimental study
منشور في 2025"…<p dir="ltr">This research investigated whether an attitudinal inoculation intervention can build resistance against problematic social media use (PSMU) in adolescents. This experimental study assessed PSMU levels and attitudes toward PSMU before and after the intervention. …"
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Pore-scale simulation of fine particles migration in porous media using coupled CFD-DEM
منشور في 2022"…<p dir="ltr">Transport of fine particles in porous media has attracted a considerable interest over the past several decades given its importance to many industrial and natural processes. …"
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Colloid retention and mobilization mechanisms under different physicochemical conditions in porous media: A micromodel study
منشور في 2021"…<p dir="ltr">Clear understanding of pore-scale mechanisms that control transport and retention of colloids in porous media at different physicochemical conditions is critical to improve design and efficient cleanup methodologies of filter beds. …"
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Release of colloids in saturated porous media under transient hydro-chemical conditions: A pore-scale study
منشور في 2021"…The intensity of colloid deposition and release decreases as the favorability of colloids decreases and as the ionic strength decrease for unfavorable colloids. …"
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Screening the growth inhibition mechanism of sulfate reducing bacteria by chitosan/lignosulfonate nanocomposite (CS@LS) in seawater media
منشور في 2021"…We investigated in detail the inhibition mechanism of SRBs by CS@LS in seawater media. Stable CS@LS-1:1 with 150–200 nm average size, and zeta potential of + 34.25 mV was synthesized. …"
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On the Performance of the Node Control Volume Finite Element Method for Modeling Multi-phase Fluid Flow in Heterogeneous Porous Media
منشور في 2020"…<p>In this paper, we critique the performance of the node control volume finite element (NCVFE) method for modeling multi-phase fluid flow in heterogeneous media. The NCVFE method solves for the pressure at the vertices of elements and a control volume mesh is constructed around them. …"
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World Cups apart: comparing <i> </i><i>New York Times</i> coverage of the 2018 Russia and 2022 Qatar World Cup tournaments
منشور في 2024"…While the New York Times’ negative directionality of the Russian World Cup decreased over time, coverage of the Qatar World Cup showed the opposite pattern, as negative directionality increased drastically post-event. …"
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A kinetic evaluation of nutrient and organic matter removal in greywater for green Walls: Assessing the performance of Mineral-Based, Organic, and Waste-Derived plant support media
منشور في 2024"…However, when accounting for leaching, which was significant in some organic media but expected to decrease with time, most organic media (SCG, date seeds, coco coir and bone) achieved around 80 % TOC removal. …"
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Global, regional, and national burden of upper respiratory infections and otitis media, 1990–2021: a systematic analysis from the Global Burden of Disease Study 2021
منشور في 2024"…The global incidence rate of otitis media was 4958·9 per 100 000 (3705·4 to 6658·6) in 2021, a decrease of 16·3% (–18·1 to –14·0) from 1990, when the incidence rate was 5925·5 per 100 000 (4371·8 to 8097·9). …"
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Qatar’s Evolving National Identity in Schools: A Twitter Perspective from 2015 to 2019
منشور في 2022"…This thesis examines to explore nationalism in education through the prism of social media. This study aims to examine how nationalism has changed in Qatar from 2015–2019. …"
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Investigating the Impact of Salinity Variations on Aerobic Granules and Activated Sludge Flocs: Emphasis on Performance Monitoring and Identification of Influential Salinity Compon...
منشور في 2022"…Increase in M/D ratio led to decreased polysaccharide production, higher hydrophobicity and lower SVI irrespective of the type of monovalent cation in the reactor. …"
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Impact of Life-coaching on Students' Wellbeing and Engagement Levels in a Preparatory School in Qatar
منشور في 2019"…The coaching program was part of a coaching club established for the purposes of this study. …"
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Economic consequences of the covid 19 outbreak
منشور في 2021"…The last part of the project is talking about the lockdown in UAE and the decrease of cases of covid and the people in UAE should always have the green pass to access the public sectors finally all the UAE citizens must be vaccinated in order to be safe .…"
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Sleeping habits during COVID-19 induced confinement: A study from Jordan
منشور في 2021"…Being a male is associated with a “decrease” and being a female is associated with an “increase” in nighttime sleeping hours (p < 0.05). …"
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An overview of carbon capture technology
منشور في 2012"…Additionally, the presence of CO<sub>2</sub> in the natural gas could decrease its calorific value and increase its transportation cost. …"
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Hyper-Hypo study: A Retrospective Observational Study of Neonatal Hypoglycemia Related to Maternal Hypertension
منشور في 2023"…Neonates of hypertensive women were significantly more preterm, had lower birth weight and part of multiple pregnancies. These neonates were exposed to either single or combined antihypertensive therapy. …"