In vacuum outgassing and vacuum-volumetric gas sorption instruments, sample elutriation should be prevented to extend the life of instrument components and ensure measurement accuracy.
In this report, simple ways to prevent sample elutriation are discussed, including hardware for samples that are particularly problematic.
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Radio wave weapon knocks out drone swarms
I hope they have assessed how easy it is to shield a drone against the attack. Hopefully the shielding would add too much weight.