Waleed Mohammed
Khartoum, Sudão
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Sou Waleed Mohammed, jornalista de vídeo do Sudão. Trabalhei para vários sites de notícias, agências de notícias e canais via satélite. Sou bom tanto em fotografia quanto em edição.
Visto em Activerain, Mdpi
The Influence of Nanocoatings on the Wear, Corrosion, and Erosion Properties of AISI 304 and AISI 316L Stainless Steels: A Critical Review Regarding Hydro Turbines
Estilo de reportagem, Informativo: Predominantly evidence-based technical review, with evaluative comparisons and recommendations for future coating research.
The review examines failures affecting hydro turbine blades, including sediment erosion, cavitation, erosion–corrosion, and fatigue, with particular attention to AISI 304 and AISI 316L stainless steels. It compares coating technologies such as HVOF, HVAF, plasma spraying, laser surface modification, PVD, and CVD, and finds that nanostructured coatings generally provide better hardness, adhesion, wear resistance, corrosion protection, and cavitation resistance than conventional coatings. WC-based cermets, alumina–titania, aluminide, TiN, Ti–SiC, NiTi–ZrO₂, and chromium nitride systems are reviewed for turbine repair and protection. The authors recommend further development and testing of multilayer or composite coatings combining nano-alumina and titanium carbide to extend turbine component life, increase overhaul intervals, and reduce repair costs.
Requirements for NYS Real Estate License?
Estilo de reportagem, Informativo: Informative with some guidance and encouragement
The article outlines the steps required to obtain a New York State Real Estate License, including submitting an application, completing 77 hours of approved education, passing the NYS Real Estate Salesperson examination, being sponsored by a licensed broker, and having a current NYS photo ID. It also mentions additional requirements such as fingerprinting. The article aims to guide aspiring real estate agents through the licensing process.






