Researchers at the Universitat Politècnica de València and partner institutes developed a cotton fabric finished with two photoactive compounds that generate reactive oxygen species under visible light, destroying microbes that contact the textile. In laboratory trials the material fully inactivated Escherichia coli within 60 minutes, Enterococcus faecalis within 20 minutes, and reduced Candida albicans within three hours. The finish retains substantial activity after repeated laundering, maintaining bactericidal efficacy above reference levels after 20 wash cycles, and the coating process is compatible with standard textile-finishing techniques, facilitating scale-up.
Hospital validation in 12 patient rooms compared treated fabric on bed rails (well lit) and mattresses (lower light) to untreated cotton controls. Fabrics exposed to regular room lighting accumulated 75% fewer microorganisms than controls, while fabrics in lower-light positions showed a 25% reduction, confirming light-dependent antimicrobial action; reduction of Gram-positive bacteria reached 77.5%. The material eliminates bacteria, fungi and viruses under routine illumination, reducing surface bioburden in healthcare settings without conventional chemical biocides. Results are reported in ACS Applied Materials & Interfaces.
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A crisis in mathematics is highlighted by Terry Tao, who calls for urgent efforts to address ongoing challenges in the field. The article explores the difficulties faced by mathematicians and possible solutions to improve the discipline. (nytimes.com)
Large language models are proving capable of generating mathematical proofs and accelerating scientific discovery. However, their integration must be carefully managed to prevent a future where human understanding diminishes and knowledge becomes concentrated and opaque. (terrytao.wordpress.com)
Neuroscientist Jared Cooney Horvath states that Gen Z is the first generation in modern history to score lower on standardized tests than the previous one, across multiple cognitive areas. He attributes this decline to increased screen time, which reduces attention and social interaction crucial for learning. (vice.com)
Researchers demonstrated that environmental memory in non-Markovian systems can be harnessed to extract work, surpassing energy stored in observable degrees of freedom. Using time-delayed measurements on an optically trapped particle, they showed that information backflow from hidden bath degrees of freedom enhances work extraction, revealing environmental memory as a thermodynamic resource. (nature.com)
A study investigates the link between handgrip strength and the risk of developing depression. Results suggest that lower grip strength is associated with higher depression incidence. (sciencedirect.com)
Ovaries remain biologically active and undergo structural and molecular changes decades after menopause. These changes include increased inflammation and a potential link to ovarian cancer, challenging the belief that postmenopausal ovaries are inactive. (news.northwestern.edu)
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