Orientation-dependence of incipient plasticity in a coarse-grained Mg revealed by nanoindentation pop-ins by Moein Imani Foumani, Syed Taha Khursheed, Yushun Liu, Guo-zhen Zhu

“…The estimated activation volume of the first pop-in was approximately 27–40 ų (involving about ∼2 atoms), aligning with reported atomistic simulations of the surface dislocation semi-loop nucleation. While indented near the ⟨c⟩-axis, grains exhibit higher first pop-in loads and successive pop-ins, implying the possibility of a cross-slip nucleation mechanism to accommodate ⟨c⟩-axis deformation.…”
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Characterizing Superflares in HR 1099 Using Temporal and Spectral Analysis of XMM-Newton Observations by Shweta Didel, Jeewan C. Pandey, A.K. Srivastava

“…We have conducted a comparative analysis of coronal abundances with previous studies and found evidence supporting the i-FIP effect. The derived flare semi-loop lengths of 6–8.9 × 10 ^10 cm were found to be comparable to the other flares detected on HR 1099; however, they are significantly larger than typical solar flare loops. …”
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