Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 99 for “"OER"”.
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Supporting lifelong learning with Open Educational Resources (OER) among diverse users: motivations for and approaches to learning with different OER
… learning with Open Educational Resources (OER) among different users, and 2) What role OER play in supporting lifelong learning among different users. The activities of key international organisations promoting lifelong learning as significant in the context of globalisation, combined with …
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Mesoporous oxides as efficient catalysts for the electrocatalytic oxygen evolution reaction (OER)
… the slow kinetics of oxygen evolution reaction (OER). An increase in mass based OER activity is mandatory for a lower capital cost of electrolyser cells. In this thesis, synthesis routes are presented for new mesoporous metal oxide films used as catalytic layers for OER in alkaline or acidic …
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Thermodynamic stability and activity volcano for perovskite-based oxide as OER catalyst
… catalysts for the oxygen evolution reaction (OER) is crucial for the development of electrochemical conversion technologies. Recent experiments show that perovskite transition-metal oxides can exhibit high electro-catalytic activity for OER. Both binding strength of reaction intermediate and …
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Synthesis and Characterization of Bi-functional (ORR/OER) Nano-catalysts in Alkaline Media
… reactions (ORR) and oxygen evolution reactions (OER) at the cathode and anode, respectively. All catalysts have been derived from transition metal oxides; an analysis of the synthesis and characterization has been conducted. The objectives are: (i) explore synthetic approaches to achieving highly …
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Academic Librarian Experiences and Perceived Value of OER Professional Development: A Case Study
… for learning about open educational resources (OER) is needed to meet academic librarians' knowledge and training needs engaged in this area. This narrative case study examines the experiences and perceptions of academic librarians who completed a structured open education leadership program. …
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The Impact of Adopting OER Videos as Supplementary Resources on Student Scores and Engagement
<p>Open educational resources (OER) have gained immense popularity in recent years, due to their ability to offer students and educators access to high-quality, free-to-use educational materials. The widespread use of OER has also been driven by the increasing availability of digital resources and …
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s-, p-, and f-block metals-mediated novel iron-based compounds as precatalysts for efficient alkaline OER
… sluggish anodic oxygen evolution reaction (OER). Currently, the anodes used in industrial AWE systems incorporate OER catalysts based on non-noble transition metals (TMs). These catalysts, however, only achieve moderate performance. As a result, substantial research has focused on developing …
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The Perceived Value of Open Educational Resources (OER) by Francophone Linguistic Minority Students in a Post-Secondary Educational (PSE) Setting
… this inequity. Open educational resources (OER) are open learning materials that are typically free and easy to access. The purpose of this qualitative research with case study methodology was to capture the experiences of Francophone students using French language OER in their courses or …
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Educators' challenges and behavioural intention to adopt open educational resources : the case of Africa University, Zimbabwe
… confirms that Open Educational Resources (OER) initiatives have created free, openly licenced and high quality educational resources for anyone to use. However, these free, openly licensed and high quality educational resources appear to remain largely unused by Africa University academics …
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Surface structural changes of perovskite oxides during oxygen evolution in alkaline electrolyte
… catalysts for the oxygen evolution reaction (OER) in alkaline solution reported to date. In this work it is shown via high resolution transmission electron microscopy (HRTEM) and Raman spectroscopy that oxides such as BSCF82 rapidly undergoes amorphization at its surface under OER conditions, …
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Development of new pyrochlore-type electrocatalysts for oxygen evolution reaction in acid
… catalysts for the oxygen evolution reaction (OER). In addition to discovering new catalysts, a fundamental understanding of OER activity and stability origin is also critical. This dissertation focuses on: (1) identifying active and acid-stable OER catalysts in comparison to the …
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Explaining the relations between culture, structure and agency in lecturers' contribution and non-contribution to Open Educational Resources in a higher education institution
… sharing and use of Open Educational Resources (OER), sharing and use of OER is not a widely accepted practice in higher education. The reasons for lecturers' choices on whether or not to contribute OER are poorly understood. This thesis develops a theoretically-based explanation of both why …
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Designing novel multinary transition metal selenides as high-efficiency oxygen evolution reaction electrocatalysts and investigating surface properties
… expedite the anodic oxygen evolution reaction (OER) is a crucial task that needs to be addressed to boost the practical application of water splitting. This research focuses on the identification of OER electrocatalysts by systematically designing non-stochiometric mixed transition metal-based …
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NICKEL HYDROXIDE NANORIBBONS FOR EFFICIENT WATER SPLITTING AND DIRECT METHANOL FUEL CELL
Oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) are very important reactions in hydrogen harvesting system and direct methanol fuel cell (DMFC). However, these two reactions are sluggish processes, due to the multi-proton coupled reactions. In this work, we report the first …
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High-Performance Low-Cost Catalysts for Water Electrolysis: A Computational and Experimental Study
… is hindered by the oxygen evolution reaction (OER), which has slow kinetics and a high overpotential, and this issue remains unresolved. This thesis employs density functional theory (DFT) to rationally design and develop low-cost, highly active, and durable TMO catalysts prepared by …
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Atom-by-atom designs of metal oxide catalysts for the oxygen evolution reaction
… is essential. The oxygen evolution reaction (OER) holds great promise, as it enables the production of green chemicals, hydrogen gas, and pure metals electrolytically from their oxides, with oxygen as the sole byproduct. However, OER suffers from slow reaction kinetics and a lack of efficient …
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OPEN EDUCATIONAL RESOURCES INITIATIVE AT THE OPEN UNIVERSITY OF TANZANIA: CHALLENGES AND LESSONS LEARNED
… the process of designing and development of an OER based course titled Academic Digital Fluency for 21st Century Lecturers at the Open University of Tanzania. Through a descriptive research design approach, the study employed documentary analysis (particularly of the proceedings and records …
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Nanoscale heterojunctions of transition metal oxide and silicon for high-efficiency oxygen evolution reaction
… hydrogen, however, is oxygen evolution reaction (OER) because of its high overpoential and the complexity of surface structures and reaction mechanisms. To overcome these obstacles, researchers have approached in two ways: (i) searching for the best materials with the highest efficiency and (ii) …
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Synthesis, characterisation, and properties of powder metallurgy transition metal-based high entropy alloys for electrocatalytic application
… reactions namely oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). HER is a two-electron transfer process while OER is a four electron/proton transfer process. Hence OER is energy intensive and affects the overall efficiency of water electrolysis. To improve the …
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