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Properties, Advantages, and Prospects of Using Cobalt-Free Composites Based on Tungsten Carbide in Industry.
Materials (Basel)
December 2024
Center of Excellence "VERITAS", D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk 070004, Kazakhstan.
This paper reviews recent advances in the synthesis of cobalt-free high-strength tungsten carbide (WC) composites as sustainable alternatives to conventional WC-Co composites. Due to the high cost of cobalt, limited supply, and environmental concerns, researchers are exploring nickel, iron, ceramic binders, and nanocomposites to obtain similar or superior mechanical properties. Various synthesis methods such as powder metallurgy, encapsulation, 3D printing, and spark plasma sintering (SPS) are discussed, with SPS standing out for its effectiveness in densifying and preventing WC grain growth.
View Article and Find Full Text PDFBackground: Antibiomania is the manifestation of manic symptoms secondary to taking an antibiotic, which is a rare side effect. In these cases, the antibiotics most often incriminated are macrolides and quinolones, but to our knowledge, there are no published cases of antibiomania secondary to cotrimoxazole. Furthermore, we also provide an update of pharmacovigilance data concerning antibiomania through a search of the World Health Organization (WHO) database.
View Article and Find Full Text PDFTired of being tired: Black college students' experiences of racial battle fatigue from highly publicized anti-Black violence.
Am J Orthopsychiatry
January 2025
Raymond A. Kent School of Social Work, University of Louisville.
The highly publicized murders of Breonna Taylor, George Floyd, and Ahmaud Arbery in 2020 sparked public outrage and widespread discussion around anti-Black violence. While some studies have examined the effects of anti-Black violence exposure on mental health outcomes, there is a paucity of research that explores how these racially charged events contribute to cumulative stress and "weathering" for Black people, particularly. Informed by racial battle fatigue theory, this in-depth qualitative study explored the lived experiences of 30 Black male and female undergraduate college students (aged 18-28) exposed to highly publicized acts of anti-Black violence.
View Article and Find Full Text PDFTowards a 'people and nature' paradigm for biodiversity and infectious disease.
Philos Trans R Soc Lond B Biol Sci
January 2025
Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment,, University College London, London WC1E 6BT, UK.
Zoonotic and vector-borne infectious diseases are among the most direct human health consequences of biodiversity change. The COVID-19 pandemic increased health policymakers' attention on the links between ecological degradation and disease, and sparked discussions around nature-based interventions to mitigate zoonotic emergence and epidemics. Yet, although disease ecology provides an increasingly granular knowledge of wildlife disease in changing ecosystems, we still have a poor understanding of the net consequences for human disease.
View Article and Find Full Text PDFExpressed disapproval does not sustain long-term cooperation as effectively as costly punishment.
Evol Hum Sci
December 2024
Department of Psychology, University of Guelph, Guelph, ON, Canada.
Punishment plays a role in human cooperation, but it is costly. Prior research shows that people are more cooperative when they expect to receive negative feedback for non-cooperation, even in the absence of costly punishment, which would have interesting implications for theory and applications. However, based on theories of habituation and cue-based learning, we propose that people will learn to ignore expressions of disapproval that are not clearly associated with material costs or benefits.
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