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Now showing items 1471-1480 of 1577
Turning waste avocado stones and montmorillonite into magnetite-supported nanocomposites for the depollution of methylene blue: adsorbent reusability and performance optimization
(
Springer Nature
, 2023 , Article)
The existence of methylene blue (MB) in wastewater even as traces is raising environmental concerns. In this regard, the performances of four adsorbents, avocado stone biochar (AVS-BC), montmorillonite (MMT), and their ...
Co-doped zigzag graphene nanoribbon based gas sensor for sensitive detection of H2S: DFT study
(
Academic Press
, 2021 , Article)
In this work, we present a highly sensitive gas sensor for the detection of poisonous hydrogen sulfide gas (H2S) based on copper and zinc co-doped zigzag graphene nanoribbon (Cu/Zn-ZGNR). The electronic properties as well ...
Crisis of Democratisation in the Maghreb and North Africa
(
Taylor & Francis
, 2023 , Other)
Democratisation in revolutionary times matters to academia and to our social world. Reflecting on the urgent scholarly need among students of Arab and Middle Eastern politics to address the crisis of democratisation is ...
Efficient electrochemical conversion of CO2 into formic acid using colloidal NiCo@rGO catalyst
(
Elsevier
, 2024 , Article)
A simple approach was used to synthesize a catalyst based on colloidal NiCo with rGO support. The catalyst was uniformly deposited on acid-treated Sn foil using drop-casting method. The prepared NiCo@rGO catalyst was ...
Regulatory Mechanisms That Guide the Fetal to Postnatal Transition of Cardiomyocytes
(
Multidisciplinary Digital Publishing Institute (MDPI)
, 2023 , Article)
Heart disease remains a global leading cause of death and disability, necessitating a comprehensive understanding of the heart’s development, repair, and dysfunction. This review surveys recent discoveries that explore the ...
Academic self-concept and its relationship to academic achievement among university students.
(2022 , Article)
This research sought to study the academic self-concept and the relationship between the academic self-concept and students’ academic achievement among university Qatari students. Research of the academic self-concept is ...
Microstructure and mechanical behavior of hot extruded aluminum/tin-bismuth composites produced by powder metallurgy
(
MDPI AG
, 2020 , Article)
In this study, Al-BiSn composites were synthesized by a combination of microwave sintering and hot extrusion processes. The structural, morphological, mechanical, and thermal properties were investigated to elucidate the ...
Building a Local Sport Identity: The World Cup and its implications on community sports in Qatar and Saudi Arabia
(
Gulf Studies center - College of Arts & Sciences - Qatar University
, 2022 , Conference Paper)
The FIFA World Cup 2022 in Qatar has resulted in more engagement in Qatar to promote local and domestic sport on different levels. Driven by the overarching goal to enhance and improve physical activities among the Qatari ...
The effect of graphene on the activation energy of grain growth for the nanocrystalline thermoelectric n-type Bi2Te2.7Se0.3
(
Springer Nature
, 2022 , Article)
Even though bismuth telluride is frequently produced by mechanical alloying for thermoelectric materials, no data has been published addressing the thermal behavior and activation energy of the milled n-type Bi2Te2.7Se0.3 ...
The vowel system of Qatari Arabic: Evidence for peripheral/non-peripheral distinction between long and short vowels
(
Cambridge University Press
, 2023 , Article)
Arabic has a vowel system with three long and three short monophthongs. One of the
parameters that accounts for qualitative differences between long and short vowels across
languages is tenseness/laxness of vowels located ...