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RTN<a href="https://chaos.social/tags/taz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#taz</a>: " Anbiederungen an Elon Musk Der deutsche KriecherDie Unterwürfigkeit hiesiger Pseudoliberaler gegenüber Elon Musk scheint anlasslos und bizarr. Überlegungen zur Untertanenmentalität. " <a href="https://taz.de/Anbiederungen-an-Elon-Musk/!6057145/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://taz.de/Anbiederungen-an-Elon-Musk/!6057145/</a>8.1.2025<a href="https://chaos.social/tags/Anbiederung" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Anbiederung</a> <a href="https://chaos.social/tags/Autorit%C3%A4rerLibertarismus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AutoritärerLibertarismus</a> <a href="https://chaos.social/tags/B%C3%BCckling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Bückling</a> <a href="https://chaos.social/tags/DerUntertan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DerUntertan</a> <a href="https://chaos.social/tags/Deutschland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Deutschland</a> <a href="https://chaos.social/tags/Imponiergehabe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Imponiergehabe</a> <a href="https://chaos.social/tags/Macht" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Macht</a> <a href="https://chaos.social/tags/Musk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Musk</a> <a href="https://chaos.social/tags/SocialMedia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SocialMedia</a> <a href="https://chaos.social/tags/Twitter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Twitter</a> <a href="https://chaos.social/tags/Untertan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Untertan</a> <a href="https://chaos.social/tags/W%C3%BCrde" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Würde</a> <a href="https://chaos.social/tags/X" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#X</a>

Nicole SharpSome seabirds, including gannets and boobies, feed by plunge diving. From high in the air, they fold their wings and dive like darts into the water, impacting at speeds around 24 m/s to help them reach the depths where their prey swim. With their narrow beaks and necks, the critical moments in this feat come when the bird’s head is submerged but its body remains out of the water. At this point, the bird’s head is decelerating quickly and its body is still moving at full speed; if the neck cannot withstand this combination of forces, it will buckle.But plunge divers, it turns out, have a secret weapon that helps them handle impact: their head shape. A <a href="https://iopscience.iop.org/article/10.1088/1748-3190/ab38cc" rel="nofollow noopener noreferrer" target="_blank">study of water entry dynamics</a> using 3D-printed models of birds’ heads found that plunge divers have a shape that increases the amount of time it takes to enter the water. The impact forces stretch out over that longer period of contact, which also stretches out the time it takes for the bird to reach its maximum deceleration. The end result? That extended contact time protects birds from unsafe levels of deceleration, just like a crumple-zone in a crashing car keeps its occupants from experiencing the worst decelerations. (Image credit: <a href="https://www.birdpoty.com/2024-winners" rel="nofollow noopener noreferrer" target="_blank">K. Zhou/BPOTY</a>; research credit: <a href="https://iopscience.iop.org/article/10.1088/1748-3190/ab38cc" rel="nofollow noopener noreferrer" target="_blank">S. Sharker et al.</a>; via <a href="https://www.thisiscolossal.com/2024/09/bpoty-2024-winners/" rel="nofollow noopener noreferrer" target="_blank">Colossal</a>)<a href="https://fyfluiddynamics.com/2024/10/immersion/" class="" rel="nofollow noopener noreferrer" target="_blank">https://fyfluiddynamics.com/2024/10/immersion/</a><a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/biology/" target="_blank">#biology</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/birds/" target="_blank">#birds</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/buckling/" target="_blank">#buckling</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/diving/" target="_blank">#diving</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/fluid-dynamics/" target="_blank">#fluidDynamics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/physics/" target="_blank">#physics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/plunge-diving/" target="_blank">#plungeDiving</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/science/" target="_blank">#science</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/water-entry/" target="_blank">#waterEntry</a>

Jocelyn Etienne<a href="https://botsin.space/@mechanobio" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@mechanobio</a> So <a href="https://scicomm.xyz/tags/actin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#actin</a> would be able to start the <a href="https://scicomm.xyz/tags/lumen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lumen</a> opening, and then a switch to <a href="https://scicomm.xyz/tags/osmotic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#osmotic</a> pressure driven growth would allow further opening before <a href="https://scicomm.xyz/tags/buckling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#buckling</a> of actin. Interesting.

Jocelyn Etienne<a href="https://biologists.social/@preLights" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@preLights</a> And we also had a variant of your pathway C of <a href="https://scicomm.xyz/tags/epithelial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#epithelial</a> fold formation : folding by *tensile* mechanical <a href="https://scicomm.xyz/tags/buckling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#buckling</a>(Note: these are my hands on the photo, so technically this is my own's only and single published experiment!)<a href="https://scicomm.xyz/tags/epithelium" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#epithelium</a>

Jocelyn Etienne<a href="https://mstdn.social/@DudinLab" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@DudinLab</a> bioRxiv link is broken in tour cross-post, so here you go without :birdsite: : <a href="https://www.biorxiv.org/content/10.1101/2023.01.17.524456v1" rel="nofollow noopener noreferrer" target="_blank">https://www.biorxiv.org/content/10.1101/2023.01.17.524456v1</a>Looks like a great <a href="https://scicomm.xyz/tags/buckling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#buckling</a> and/or <a href="https://scicomm.xyz/tags/cavitation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cavitation</a> story! <a href="https://scicomm.xyz/tags/biophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#biophysics</a> <a href="https://scicomm.xyz/tags/mechanobiology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mechanobiology</a> <a href="https://a.gup.pe/u/mechanobiology" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@mechanobiology</a>

⎯ΘωΘ⟶<a href="https://mathstodon.xyz/tags/Micro" class="mention hashtag" rel="tag">#Micro</a> <a href="https://mathstodon.xyz/tags/filaments" class="mention hashtag" rel="tag">#filaments</a> are usually about 7 nm in <a href="https://mathstodon.xyz/tags/diameter" class="mention hashtag" rel="tag">#diameter</a> and <a href="https://mathstodon.xyz/tags/made" class="mention hashtag" rel="tag">#made</a> up of <a href="https://mathstodon.xyz/tags/two" class="mention hashtag" rel="tag">#two</a> <a href="https://mathstodon.xyz/tags/strands" class="mention hashtag" rel="tag">#strands</a> of <a href="https://mathstodon.xyz/tags/actin" class="mention hashtag" rel="tag">#actin</a>. Microfilament <a href="https://mathstodon.xyz/tags/functions" class="mention hashtag" rel="tag">#functions</a> <a href="https://mathstodon.xyz/tags/include" class="mention hashtag" rel="tag">#include</a> <a href="https://mathstodon.xyz/tags/cytokinesis" class="mention hashtag" rel="tag">#cytokinesis</a>, <a href="https://mathstodon.xyz/tags/amoeboid" class="mention hashtag" rel="tag">#amoeboid</a> <a href="https://mathstodon.xyz/tags/movement" class="mention hashtag" rel="tag">#movement</a>, <a href="https://mathstodon.xyz/tags/cell" class="mention hashtag" rel="tag">#cell</a> <a href="https://mathstodon.xyz/tags/motility" class="mention hashtag" rel="tag">#motility</a>, <a href="https://mathstodon.xyz/tags/changes" class="mention hashtag" rel="tag">#changes</a> <a href="https://mathstodon.xyz/tags/in" class="mention hashtag" rel="tag">#in</a> <a href="https://mathstodon.xyz/tags/cell" class="mention hashtag" rel="tag">#cell</a> <a href="https://mathstodon.xyz/tags/shape" class="mention hashtag" rel="tag">#shape</a>, <a href="https://mathstodon.xyz/tags/endocytosis" class="mention hashtag" rel="tag">#endocytosis</a> and <a href="https://mathstodon.xyz/tags/exocytosis" class="mention hashtag" rel="tag">#exocytosis</a>, <a href="https://mathstodon.xyz/tags/cell" class="mention hashtag" rel="tag">#cell</a> <a href="https://mathstodon.xyz/tags/contractility" class="mention hashtag" rel="tag">#contractility</a>, and <a href="https://mathstodon.xyz/tags/mechanical" class="mention hashtag" rel="tag">#mechanical</a> <a href="https://mathstodon.xyz/tags/stability" class="mention hashtag" rel="tag">#stability</a>. <a href="https://mathstodon.xyz/tags/Microfilaments" class="mention hashtag" rel="tag">#Microfilaments</a> are <a href="https://mathstodon.xyz/tags/flexible" class="mention hashtag" rel="tag">#flexible</a> and <a href="https://mathstodon.xyz/tags/relatively" class="mention hashtag" rel="tag">#relatively</a> <a href="https://mathstodon.xyz/tags/strong" class="mention hashtag" rel="tag">#strong</a>, <a href="https://mathstodon.xyz/tags/resisting" class="mention hashtag" rel="tag">#resisting</a> <a href="https://mathstodon.xyz/tags/buckling" class="mention hashtag" rel="tag">#buckling</a> by <a href="https://mathstodon.xyz/tags/multi" class="mention hashtag" rel="tag">#multi</a> <a href="https://mathstodon.xyz/tags/piconewton" class="mention hashtag" rel="tag">#piconewton</a> <a href="https://mathstodon.xyz/tags/compressive" class="mention hashtag" rel="tag">#compressive</a> <a href="https://mathstodon.xyz/tags/forces" class="mention hashtag" rel="tag">#forces</a> and filament <a href="https://mathstodon.xyz/tags/fracture" class="mention hashtag" rel="tag">#fracture</a> by <a href="https://mathstodon.xyz/tags/nanonewton" class="mention hashtag" rel="tag">#nanonewton</a> <a href="https://mathstodon.xyz/tags/tensile" class="mention hashtag" rel="tag">#tensile</a> <a href="https://mathstodon.xyz/tags/forces" class="mention hashtag" rel="tag">#forces</a>.

Jocelyn EtienneBuckling tissue to a ...straight line! Not the sort of <a href="https://scicomm.xyz/tags/buckling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#buckling</a> we're used to, in <a href="https://scicomm.xyz/tags/Drosophila" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Drosophila</a> mesoderm <a href="https://scicomm.xyz/tags/actomyosin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#actomyosin</a> narrows <a href="https://scicomm.xyz/tags/tissue" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tissue</a> in DV and tension builds up along AP until forming a wire that indents embryo... like a cheese wire. Now in NComms: <a href="https://rdcu.be/cPnZT" rel="nofollow noopener noreferrer" target="_blank">https://rdcu.be/cPnZT</a> <a href="https://scicomm.xyz/tags/xp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#xp</a>

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