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Wavebreakers in excitable systems and possible applications for corrosion mitigation.
Chaos
January 2025
Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA.
Traveling waves of excitation arise from the spatial coupling of local nonlinear events by transport processes. In corrosion systems, these electro-dissolution waves relay local perturbations across large portions of the metal surface, significantly amplifying overall damage. For the example of the magnesium alloy AZ31B exposed to sodium chloride solution, we report experimental results suggesting the existence of a vulnerable zone in the wake of corrosion waves where local perturbations can induce a unidirectional wave pulse or segment.
View Article and Find Full Text PDFUsing feminist methodologies to explore female genital mutilation/cutting and child marriage in low- and middle-income contexts.
Front Res Metr Anal
December 2024
Gender and Adolescence: Global Evidence (GAGE), Amman, Jordan.
This paper discusses how harmful practices such as child marriage and female genital mutilation/cutting (FGM/C) can be effectively explored through feminist methodologies that center the lived experiences of girls and young women affected by these issues. Eliminating harmful practices, which are rooted in gender inequality and have myriad life-course consequences for those who experience them, has become a global priority in recent years. However, dominant conceptualizations of the drivers and consequences of child marriage and FGM/C often fail to adequately engage with or reflect adolescent girls' own nuanced experiences and perceptions.
View Article and Find Full Text PDFEvaluation of the quality of depression-related information on Chinese websites and video platforms: a cross-sectional comparative analysis.
Front Psychiatry
December 2024
Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China.
Objectives: We aimed to assess the quality of information regarding depression on Chinese websites and popular video platforms.
Methods: We conducted searches on website platforms (Baidu, Bing) and video platforms (Bilibili, Douyin) using search terms "depression", "depressive disorder", "depression treatment", "depressive anxiety", "depressed patient", and "depressive symptoms". We collected the first 50 results with each search term in each platform.
Polymerization potential of a bacterial CotA-laccase for β-naphthol: enzyme structure and comprehensive polymer characterization.
Front Microbiol
November 2024
Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
Introduction: Laccases are blue-multicopper containing enzymes that are known to play a role in the bioconversion of recalcitrant compounds. Their role in free radical polymerization of aromatic compounds for their valorization remains underexplored. In this study, we used a pBAD plasmid containing a previously characterized CotA laccase gene (abbreviated as -Lacc) from strain ATCC 9945a to express this enzyme and explore its biotransformation/polymerization potential on β-naphthol.
View Article and Find Full Text PDFThe time dependent influence of curvature and topography of biomaterials in the behavior of corneal endothelial cells.
Front Bioeng Biotechnol
September 2024
Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Barcelona, Spain.
Among the different layers of the cornea, the corneal endothelium, which is composed of corneal endothelial cells (CEC), plays a key role in the maintenance of cornea transparency. Based on the donor shortages and the limitations associated with transplantation, in this work we have developed collagen hydrogels with different patterned structures on the surface to provide topographies in ranges similar to the natural environment that CEC sense. This aimed at stimulating cells to maintain a typical CEC phenotype and provide alternatives to corneal transplantation.
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