Actually, LLNL (the site of El Capitan) has a process for requesting Dedicated Application Time (a DAT) where you use up to a whole machine, usually over a weekend. They occur fairly regularly. Mostly it's lots of individual users and jobs, like you said though.
Steels can undergo a transition to becoming brittle when they get cold (called a “ductile-to-brittle” transition). It’s important to know what the properties would be like in this regime and -70C is enough to get there (even 0C can be enough, depending on the alloy).
The reason this person may have thought the -70C test eqs stupid is because a sub will never be working in conditions much colder than the freezing temperature of water (which is not strongly pressure dependent, btw), since the water would want to freeze - not good for the boat.
It's not "initial conditions" as in time=0. Thermodynamic state variables are path independent, so "initial conditions" in this context means the conditions of the reference point in the process from the point you start measuring.
At least for the AR-15 platform (the weapons pictured in the article), only the part that bears the serial number is regulated. Everything else can be bought freely and legally. For the AR-15, that part is the lower receiver.
A project I work on has a `RELEASING.rst` in the repo, which I include in the docs [1]. It contains a checklist of steps with the code. The actual deployment is automated with a GitHub Action to deploy to PyPI.
The checklist makes sure I hit all the things I need to do. There's still places to screw up the manual steps, replacing the right versions, etc. It's not perfect and there's a bunch of things I want to improve still. I try to write it clearly enough so that someone who's never released a project ever just needs to follow the steps.
> Due to the inhibition of van der Waals adhesion at the liquid interface, the electrode was remarkably resistant to deactivation via coking caused by solid carbonaceous species.
MOXIE is solid state technology and having solid C reaction products would very likely deactivate the cell by clogging up the triple phase boundaries where the reactions occur.
I use Goodreads, but only like a letterboxd for books. Anyone have a recommendation of something with a better experience than goodreads where I can track my read, reading and wanting to read?
Recommendations are not that important to me and “social” features even less so.