Results 51 to 60 of about 4,418,447 (183)

Preparation of Au-Doped Two-Phase TiO2 Nanoparticles by One-Step Method as Photocatalytic Applications

open access: yesIndonesian Journal of Chemistry
The synthesis of pure TiO2 and X% Au/TiO2 NPs was achieved via a sol-gel technique. The influence of Au concentration on structural, morphological, and optical features, as well as photocatalytic activity, was studied.
Rasha Jameel Neama   +4 more
doaj   +1 more source

UN and Regional Actors in Somalia: A Quest for New Modes of Interaction [PDF]

open access: yesУченые записки Института Африки Российской академии наук
Over the past decades, the security situation in Somalia has been a matter of global concern. Since 1991, Somalia has remained a virtually fragmented country with de facto no proper governance.
Tishkov Sergey Aleksandrovich   +1 more
doaj   +1 more source

African Regional and Sub-Regional Organisations’ Security Policies: Challenges and Prospects

open access: yesAkademik İncelemeler Dergisi, 2014
This article will examine peace and security policies and strategies of the African Union (AU), the Intergovernmental Authority for Development (IGAD), the Economic Community Of West African States (ECOWAS), and the Southern African Development Community
Abdurrahim Siradag
doaj  

Central Africa’s Security Paradox: Active International Intervention amid Protracted Conflict

open access: yesVestnik RUDN. International Relations
Despite its considerable potential and growth rates, the African continent has not yet overcome its main challenge: con icts, which have become almost chronic in some countries. Given the tangible consequences of these con icts for both African countries
Tatiana N. Kirikova   +1 more
doaj   +1 more source

Management of a posterior mediastinal Gardner fibroma causing critical airway stenosis in a resource limited setting

open access: yesJournal of Pediatric Surgery Case Reports, 2017
In developed countries, surgeons and anesthesiologists approach the mediastinal mass causing airway compression with prudence and trepidation. Resource-limited settings provide unique challenges in the diagnosis and management of patients with critical ...
Katie Clouthier, DO   +8 more
doaj   +1 more source

Immobilization and structural transformations of Ir-based oxygen evolution reaction catalysts supported on porous transport electrodes for proton-exchange membrane water electrolysis

open access: yesNano Research
The advancement of cost-effective, energy-efficient, and durable proton-exchange membrane water electrolysis (PEMWE) devices is essential for the conversion and utilization of renewable electricity.
Feng He   +3 more
doaj   +1 more source

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