Publications by authors named "R Borup"
Determining the p values of various C-H sites in organic molecules offers valuable insights for synthetic chemists in predicting reaction sites. As molecular complexity increases, this task becomes more challenging. This paper introduces pKalculator, a quantum chemistry (QM)-based workflow for automatic computations of C-H p values, which is used to generate a training dataset for a machine learning (ML) model.
View Article and Find Full Text PDFPolymer-electrolyte-membrane fuel cells (PEMFCs) hold great promise for applications in clean energy conversion, but cost and durability continue to limit commercialization. This work presents a new class of catalyst/electrode architecture that does not rely on Pt particles or carbon supports, eliminating the primary degradation mechanisms in conventional electrodes, and thereby enabling transformative durability improvements. The coaxial nanowire electrode (CANE) architecture consists of an array of vertically aligned nanowires, each comprising an ionomer core encapsulated by a nanoscale Pt film.
View Article and Find Full Text PDFMetal alloy catalysts (e.g., Pt-Co) are widely used in fuel cells for improving the oxygen reduction reaction kinetics.
View Article and Find Full Text PDFArticle Synopsis
- This research identifies 290 genetic factors linked to ovarian ageing by analyzing the age at natural menopause in 200,000 European women, highlighting how genetics can influence reproductive lifespan.* -
- The study reveals that these genetic variants are connected to DNA damage response processes that impact ovarian reserve and depletion rates, suggesting potential therapeutic targets.* -
- Manipulating these pathways in experimental models showed promise in boosting fertility and extending reproductive longevity, while also indicating benefits and risks for women's overall health, such as improved bone health but increased cancer risk.*
Article Synopsis
- PGM-free catalysts offer a low-cost solution for polymer electrolyte fuel cells, but their lower activity requires thicker electrodes than PGM-based ones, leading to issues with transport resistance and water management.
- The study focuses on improving water management in PGM-free electrodes to boost fuel cell performance, using in-operando neutron imaging to analyze water content across the fuel cell.
- Performance enhancements are achieved through three strategies: a new microporous layer to assist water removal, innovative gas diffusion layers in the anode, and increasing catalyst porosity to reduce water saturation.