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1. Radio frequency plasma capacitor can increase rates of seeds imbibition, germination, and radicle growth

   https://doi.org/10.1071/FP20293  

   Volkov, Alexander G.; Bookal, Asya; Hairston, Jewel S.; Patel, Darayas (January 2020, Functional Plant Biology)

   null (Ed.)
2. Planting Seeds for Community

   Eischen, Ellen; Hsu, Catherine (November 2022, Notices of the American Mathematical Society)
3. Planting Seeds for Community

   Eischen, Ellen; Hsu, Catherine (November 2022, Notices of the American Mathematical Society)

   An article that gives tips on how to build community in mathematics communities. 

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4. Seeds don’t sink: even massive black hole ‘seeds’ cannot migrate to galaxy centres efficiently

   https://doi.org/10.1093/mnras/stab2713  

   Ma, Linhao; Hopkins, Philip F; Ma, Xiangcheng; Anglés-Alcázar, Daniel; Faucher-Giguère, Claude-André; Kelley, Luke Zoltan (October 2021, Monthly Notices of the Royal Astronomical Society)

   ABSTRACT Possible formation scenarios of supermassive black holes (BHs) in the early universe include rapid growth from less massive seed BHs via super-Eddington accretion or runaway mergers, yet both of these scenarios would require seed BHs to efficiently sink to and be trapped in the Galactic Centre via dynamical friction. This may not be true for their complicated dynamics in clumpy high-z galaxies. In this work, we study this ‘sinking problem’ with state-of-the-art high-resolution cosmological simulations, combined with both direct N-body integration of seed BH trajectories and post-processing of randomly generated test particles with a newly developed dynamical friction estimator. We find that seed BHs less massive than $$10^8\, \mathrm{M}_\odot$$ (i.e. all but the already-supermassive seeds) cannot efficiently sink in typical high-z galaxies. We also discuss two possible solutions: dramatically increasing the number of seeds such that one seed can end up trapped in the Galactic Centre by chance, or seed BHs being embedded in dense structures (e.g. star clusters) with effective masses above the mass threshold. We discuss the limitations of both solutions. 

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5. ALGEBRAIC SEEDS FOR GRAPHING FUNCTIONS

   López, MA; Strachota, S; Brizuela, BM; Pérez-Martos, MC; Gardiner, AM; Blanton, M (July 2024, PME)

   Evans, T; Marmur, O; Hunter, J; Leach, G; Jhagroo, J (Ed.)

   This case study of one first grade student involves the analysis of three interviews that took place before, during, and after classroom teaching experiments (CTEs). The CTEs were designed to engage children in representing algebraic concepts using graphs. Using a knowledge-in-pieces perspective, our analysis focused on identifying students’ natural intuitions and ways of thinking algebraically about a functional relationship represented using graphs. Findings reveal four seeds, two of which were identified in prior studies, and how the activation and coordination of these seeds results in students' production of function graphs. 

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