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السجلات المعروضة 2441 -- 2460 من 3454
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Rational design of porous binary Pt-based nanodendrites as efficient catalysts for direct glucose fuel cells over a wide pH range
( Royal Society of Chemistry , 2017 , Article)The development of porous bi-metallic Pt-based nanocrystals (NCs) as efficient catalysts for the glucose oxidation reaction (GOR) over a wide pH range is still a grand challenge. Triggered by this challenge, we report the ... -
Rational one-pot synthesis of ternary PtIrCu nanocrystals as robust electrocatalyst for methanol oxidation reaction
( Elsevier B.V. , 2020 , Article)Development of self-assembled nanoarchitectures of tailored morphology and composition for diversified applications have received great interest in the last decades. Pt-based nanocrystals (NCs) exhibited enhanced catalytic ... -
Rational one-step synthesis of porous PtPdRu nanodendrites for ethanol oxidation reaction with a superior tolerance for CO-poisoning
( Royal Society of Chemistry , 2017 , Article)Precise fabrication of porous ternary Pt-based nanodendrites is very important for electrochemical energy conversion owing to high surface area and great molecular accessibility of these nanodendrites. Herein, PtPdRu porous ... -
Rational synthesis of ternary PtIrNi nanocrystals with enhanced poisoning tolerance for electrochemical ethanol oxidation
( Elsevier Inc. , 2019 , Article)The development of highly efficient and durable anode materials for ethanol electro-oxidation remains a challenge. Herein, we report the synthesis of Pt1−x−yIrxNiy nanocrystals via one-step procedure by ultrasonic-assisted ... -
Re-emission of slow positrons from tungsten at elevated temperatures
( Elsevier , 2002 , Conference Paper)A series of measurements have been made on the dependence of the intensity and energy spectrum of slow positrons re-emitted from polycrystalline tungsten foil held at temperatures of up to 500 °C. Irrespective of target ... -
Re-Evaluating Early Memorization of the Qurʾān in Medieval Muslim Cultures
( MDPI , 2022 , Article)In medieval Islam, traditional primary educational practices laid special emphasis on learning the Qurʾān by heart. Ideally, a pupil was primed to memorize the entirety of the Holy Book―a feat known as khatma or ḥadhqa. ... -
Re-visioning Germany's democracy promotion in the Arab World
( GIGA German Institute of Global and Area Studies , 2022 , Article)This article briefly investigates German democracy promotion in the Arab world since the 2011 popular uprisings and revolutions. It seeks a parsimonious discourse analysis, looking at Germany's "democracy-promotion speak" ... -
Reading Strategies Used by Undergraduate University General Education Courses for Students in US and Qatar
( Taylor and Francis Group , 2021 , Article)This study assessed the metacognitive awareness of reading strategies of undergraduate university students in US and Qatar in reading academic materials. To achieve this, the participants were administered the Metacognitive ... -
Real-Time PCR Quantification of Metallothionein Gene Expression in Sprague–Dawley Rats Chronically Exposed to Cd
( American Association for Laboratory Animal Science , 2012 , Presentation)Toxicologic impact of Cd leads to multiple human pathologic conditions, and its effect on humans and animals has been extensively studied. Physiologic function of metallothionein (MT1) is not completely understood, but ... -
Realizing algae value chains in arid environments: an Arabian Peninsula perspective
( Elsevier , 2022 , Article)Algae are a promising feedstock for the sustainable production of feed, fuels, and chemicals. Especially in arid regions such as the Arabian Peninsula, algae could play a significant role in enhancing food security, economic ... -
Recent advance in synthesis and application of heteroatom zeolites
( Elsevier B.V. , 2021 , Article)Incorporation of heteroatoms into the framework of zeolites has become a significant strategy to improve their performance in catalysis and adsorption, because the obtained heteroatom zeolites exhibit quite different ... -
Recent advances and applications of municipal solid wastes bottom and fly ashes: Insights into sustainable management and conservation of resources
( Elsevier B.V. , 2021 , Article)Waste destruction through incineration has widely become an acceptable and popular choice globally. Despite being regarded as a sustainable option, if not operated and managed properly, it can be one of the least environmentally ... -
Recent advances in applications of active constituents of selected medicinal plants of dhofar, sultanate of oman
( Innovare Academics Sciences Pvt. Ltd , 2018 , Article Review)The Dhofar region of Oman is extremely opulent in plant biodiversity in comparison to other parts of the country. Most of the cultivated, medicinal and wild plants of the region are available in the mountainous side and ... -
Recent advances in synthesis of functionalized β-lactams through cyclization of N-propargyl amine/amide derivatives
( Bentham Science Publishers B.V. , 2018 , Other)β-lactams have attracted a significant attention due to their potential biological activities and wide variety of synthetic applications. Developing novel and efficient methods for construction of functionalized β-lactams ... -
Recent advances in targeting protein arginine methyltransferase enzymes in cancer therapy
( Taylor and Francis Ltd , 2018 , Article Review)Introduction: Exploration in the field of epigenetics has revealed the diverse roles of the protein arginine methyltransferase (PRMT) family of proteins in multiple disease states. These findings have led to the development ... -
Recent advances in the treatment of PAHs in the environment: Application of nanomaterial-based technologies
( Elsevier B.V. , 2022 , Article)Polycyclic aromatic hydrocarbons (PAHs) are one of the most frequent petroleum hydrocarbons detected in the environment. PAHs are receiving global attention due to their toxicity, environmental persistence, and potential ... -
Recent Developments in Nanomaterials-Based Drug Delivery and Upgrading Treatment of Cardiovascular Diseases
( MDPI , 2022 , Article)Cardiovascular diseases (CVDs) are the leading causes of morbidity and mortality worldwide. However, despite the recent developments in the management of CVDs, the early and long outcomes vary considerably in patients, ... -
Recent developments in ultrafiltration membrane technology for the removal of potentially toxic elements, and enhanced antifouling performance: A review
( Elsevier , 2023 , Article)The presence of high concentrations of heavy metals (potentially toxic elements) in water bodies generates serious environmental issues and health problems that led to a dramatic increase in wastewater treatment costs. ... -
Recent overviews in functional polymer composites for biomedical applications
( MDPI AG , 2018 , Article Review)Composite materials are considered as an essential part of our daily life due to their outstanding properties and diverse applications. Polymer composites are a widespread class of composites, characterized by low cost, ... -
Recent progress and multifunctional applications of 3D printed graphene nanocomposites
( Elsevier Ltd , 2021 , Article Review)This review provides a comprehensive analysis of available peer-reviewed literature in which graphene and/or its derivatives are incorporated into a polymer matrix in order to enhance the final properties and functionalities ...