--- Log opened Fri Jun 05 00:00:41 2020
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03:56 < L29Ah> hey peeps, what's your position on DHEA supplementation?
03:59 < darsie> Dehydroepiandrosterone (DHEA), also known as androstenolone, is an endogenous steroid hormone precursor.
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04:55 < archels> https://www.cell.com/cell/pdf/S0092-8674(20)30555-9.pdf
04:55 < archels> "Preventing ROS accumulation in the gut allows survival without sleep in flies"
05:03 < L29Ah> S0092-8674(20)30555-9.pdf: HTML document, UTF-8 Unicode text, with very long lines
05:03 < L29Ah> great pdf, man
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05:56 < nsh> L29Ah, what does DHEA supplementation promote/enhance?
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07:04 < docl> .tw https://twitter.com/lsparrish/status/1268670300973039616
07:04 < saxo> @CJHandmer I think you're not seeing the whole picture. Dollars aren't really the same kind of thing as kWh of energy. If you spend 1000x as many dollars worth of energy in a mfg plant for space based solar cells, the kWh of those is worth 1000x as many dollars if put on commsats *or* mfg. (@lsparrish, in reply to tw:1268666302568120320)
07:11 < fenn> wow what a stupid argument
07:12 < fenn> "with a ballpark estimate of $1000 of revenue per orbit" what does that have to do with anything?
07:12 < fenn> this is like estimating the price of canvas by looking at fine art sales
07:13 < fenn> it's also trivial to calculate the cost of launching a solar panel
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07:42 < fenn> also it seems like you both agree on the point of the article, that solar power in space will be used in space, not on earth
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07:48 < nsh> glad that got cleared up
07:55 < docl> well, I have arguments to the contrary of that, but I didn't go into them.
07:56 < docl> specifically, mirrors are cheap and reflect ~100%, it's just spread out which makes it only suitable at high scale.
07:58 < docl> so for LEO you are looking at a minimum spot size of 2-4 km wide. and you can reflect down as much as you can handle -- for a big solar plant, even just getting noon levels 24/7 would be a huge multiplier for the effectiveness of the equipment on the ground.
07:58 < nsh> mirrors can't reflect 100%
07:58 < nsh> (photons impart momentum)
07:59 < fenn> you can balance radiation pressure with gravity (statite)
07:59 < fenn> mirrors commonly reflect 95%
08:01 < docl> the idea is being explored, newly funded thing at u of glasgow: https://www.gla.ac.uk/news/headline_717322_en.html
08:02 < fenn> FltAdmVonSpitz has been talking about that for a couple years now
08:02 < docl> colin mcinnes looks like he picks interesting stuff to work on: https://www.gla.ac.uk/schools/engineering/staff/colinmcinnes/#publications
08:02 < fenn> it's certainly worth looking into
08:03 < fenn> asteroid disassembly using the orbital siphon effect was a nice paper
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08:14 < docl> tricky bit with the mirrors is if you do it from lower orbits you can't see the sun as much of the time, but more distant means wider minimum spot
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08:21 < docl> wide spot could be useful for other things than power plants maybe. say someone wants to grow a 10 billion sqm paulownia forest for carbon capture. it could happen maybe 5x as fast with 24/7 sunlight spread over 100km wide area (possible with 10,000 km distance sats). main issue would be that this is enough energy to affect weather/climate. (weather/climate modification would be another use for it.)
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11:17 < lsneff> .t https://collaborate.princeton.edu/en/publications/asc-automatically-scalable-computation
11:17 < saxo> ASC: Automatically scalable computation     — Princeton University
11:19 < lsneff> This is really cool.
11:19 < lsneff> Automatically scale sequential computation onto many cores with a substantial speedup
11:26 < lsneff> 256x speedup running completely sequential speedup on 1024 cores
11:26 < lsneff> Wow that was bad grammer
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14:05 < gnusha> https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=d37f7c95 Michael Folkson: Add Alekos on Magical Bitcoin >> http://diyhpl.us/diyhpluswiki/transcripts/la-bitdevs/2020-05-21-alekos-filini-magical-bitcoin/
14:05 < gnusha> https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=e2e0f6a4 Bryan Bishop: Merge pull request #112 from michaelfolkson/add-alekos-labitdevs >> http://diyhpl.us/diyhpluswiki/
14:06 < kanzure> backup your data
14:07 < lsneff> I saw your tweets about that
14:07 < lsneff> Were you affected?
14:09 < kanzure> nope
14:09 < kanzure> in fact, i have been able to provide a partial backup thanks to my pathological data hoarding
14:10 < lsneff> Of course haha
14:10 < lsneff> Do you store everything locally?
14:18 < kanzure> stored in my mind
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14:36 < lsneff> Right
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--- Log closed Sat Jun 06 00:00:42 2020