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Now showing items 5531-5540 of 5570
Hybrid fuzzy sliding mode for stick-slip suppression in drill string systems
(
Korean Society of Mechanical Engineers
, 2022 , Article)
Stick-slip vibration is one of the main factors that contribute greatly to reducing the service life of drill string equipment and decreasing the efficiency of the overall drilling system. Thus, it would be very desirable ...
Review of innovative approaches of thermo-mechanical refrigeration systems using low grade heat
(
Hindawi
, 2020 , Article)
Cooling and refrigeration systems consume around 17% of the world-wide electricity. Enhancing the performance of these systems, using renewable energy resources and waste heat recovered from industrial processes, will lead ...
Synergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes
(
Elsevier
, 2021 , Article)
The potential use of dodecylamine-functionalized graphene oxide (rGO-DDA) nanoparticles as an antifoulant and antibacterial nanofiller was investigated. GO and rGO-DDA were analyzed using Raman spectroscopy, FTIR, SEM, ...
A modified niching crow search approach to well placement optimization
(
Multidisciplinary Digital Publishing Institute (MDPI)
, 2021 , Article)
Well placement optimization is considered a non-convex and highly multimodal optimization problem. In this article, a modified crow search algorithm is proposed to tackle the well placement optimization problem. This article ...
Innovation in north african agriculture and food
(
Bononia University Press
, 2021 , Article)
Innovation plays an essential role in addressing the interlinked environmental, social, and economic challenges facing the agri-food sectors in the North Africa region. This systematic review analyses the state of research ...
Toward New Architecture for Persian Gulf Order, Necessity of Overlapping the Human Security and State Security
(
Gulf Studies center - College of Arts & Sciences - Qatar University
, 2021 , Conference Paper)
The security regimes in the Persian Gulf are mainly based on the realism that emphasizes statism. Accordingly, the security regimes have been trying to ensure the security of the state, and in its reduced form, the security ...
Application of Pineapple Leaves as Adsorbents for Removal of Rose Bengal from Wastewater: Process Optimization Operating Face-Centered Central Composite Design (FCCCD)
(
Multidisciplinary Digital Publishing Institute (MDPI)
, 2020 , Article)
Adsorptive removal of rose bengal (RB) from contaminated water samples was approached using pineapple leaves (PAL). Three adsorbents were utilized for that purpose; raw pineapple leaves (RPAL) and the thermally activated ...
The World Cup and Human Rights in Qatar: A Catalyst for Change?
(
Gulf Studies center - College of Arts & Sciences - Qatar University
, 2022 , Conference Paper)
Hosting massive sporting events like the World Cup is a massive accomplishment for a state like Qatar. Regardless of the economic benefits, it forces Qatar to create infrastructure and improve the nation's landscape, but ...
Les représentations de la langue/culture française chez les étudiantes qatariennes inscrites en mineure de français à l’Université du Qatar
(
Slovenska Vzdelavacia a Obstaravacia s.r.o
, 2021 , Article)
Cette recherche s’intéresse aux représentations que se font les étudiantes qatariennes,
inscrites en mineure de français à l’université du Qatar, de la langue/culture française.
Son objectif est d’analyser ces représentations ...
Characteristic MicroRNAs Linked to Dysregulated Metabolic Pathways in Qatari Adult Subjects With Obesity and Metabolic Syndrome.
(
Frontiers
, 2022 , Article)
Obesity-associated dysglycemia is associated with metabolic disorders. MicroRNAs (miRNAs) are known regulators of metabolic homeostasis. We aimed to assess the relationship of circulating miRNAs with clinical features in ...