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Showing 1–6 of 6 results
Advanced filters: Author: Julio M. Ottino Clear advanced filters

  • Mixing two different types of grains in a revolving tumbler produces several radial streaks as the grains segregate. Unexpectedly though, after hundreds of revolutions, only one streak remains.

    • Steven W. Meier
    • Diego A. Melani Barreiro
    • Richard M. Lueptow
    Research
    Nature Physics
    Volume: 4, P: 244-248

  • Understanding mixing in yield stress materials, such as paint and sand, is complicated due to the coexistence of solid-like and fluid-like regimes. Zaman et al. examine mixing in a granular material in three dimensions and find persistent complex non-mixing structures within the chaotic flowing regime.

    • Zafir Zaman
    • Mengqi Yu
    • Paul B. Umbanhowar
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Mentors influence the future success of their protégés, but to what extent do those protégés emulate their mentors? Here, one aspect of mentor emulation is studied, namely fecundity — the number of protégés a mentor trains. Analysis of data from the Mathematics Genealogy Project shows that although mentorship fecundity correlates with success, those mentors who maintain a small fecundity go on to train protégés with a larger fecundity. Moreover, the mentor's career stage influences the eventual fecundity of their protégés.

    • R. Dean Malmgren
    • Julio M. Ottino
    • Luís A. Nunes Amaral
    Research
    Nature
    Volume: 465, P: 622-626

  • Exciting new illustration technologies should be used with care.

    • Julio M. Ottino
    Comments & Opinion
    Nature
    Volume: 421, P: 474-476