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| archels | "We have selected scientists like you, who have an enormous contribution in their respective field [..." | 03:38 |
|---|---|---|
| archels | you... you read my conference abstracts? *blushes* | 03:39 |
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| kanzure | nah there's a bunch of spam like that | 05:09 |
| Jawmare | archels, predatory publishers | 05:13 |
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| archels | don't ruin it for me | 05:23 |
| kanzure | r2d2 dies | 05:26 |
| archels | that's OK, I'm of the Trekkie conviction | 05:30 |
| kanzure | spock already died dude. he's gone for good. | 05:32 |
| archels | there is no already in a universe where time travel has been achieved | 05:33 |
| archels | (and let's not get into Tipler's Eternal Return) | 05:36 |
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| archels | haha missed this the first time around https://www.youtube.com/watch?v=RDZu04v7_hc | 06:46 |
| archels | .title | 06:46 |
| yoleaux | HappyHolidays - YouTube | 06:46 |
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| Alcyius | https://en.wikipedia.org/wiki/Henry_Moseley#Death_and_aftermath | 08:26 |
| Alcyius | Here's an interesting bit | 08:26 |
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| FourFire | losses here, there and everywhere | 08:34 |
| FourFire | no purpose in mourning that which could have been | 08:34 |
| maaku | jrayhawk: halting problem is a non-issue. nodes don't perform computation, they validate the a computation occured | 08:35 |
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| eudoxia | happy birthday kanzure | 09:32 |
| eudoxia | facebook notifications are good for something after all | 09:32 |
| kanzure | hi | 09:35 |
| andytoshi | if eudoxia's facebook is right, happy birthday! | 09:37 |
| kanzure | andytoshi: we should do food soon | 09:37 |
| kanzure | are you back yet? | 09:37 |
| andytoshi | kanzure: agreed. i'm in vancouver bc right now, headed to SF for real world crypto tomorrow | 09:37 |
| kanzure | bah | 09:37 |
| andytoshi | nope :/ | 09:37 |
| kanzure | whatever. | 09:38 |
| andytoshi | and it might be a little while | 09:38 |
| FourFire | kanzure, I heard you've survived yet another arbitrary orbit around the sun; may you endure yet tenfold more! | 09:42 |
| maaku | happy birthday indeed! | 09:57 |
| maaku | and i sure hope it is more than tenfold more | 09:57 |
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| andytoshi | well, if we all individually wish tenfold more | 09:58 |
| andytoshi | that should give kanzure enough time to find more friends who will also with tenfold more.. | 09:58 |
| maaku | you guys need to manufacture an excuse for me to be in Austin, and I'll buy the food | 09:59 |
| FourFire | I dunno... I'm not gonna maaku | 10:08 |
| maaku | haha i menat andytoshi and kanzure. you're someone in scandinavia, no? | 10:11 |
| pasky | happy birthday! but we should start working harder if it's to be tenfold more yet | 10:16 |
| kanzure | yeah i guess prioritizing better nootropics would make sense. | 10:17 |
| xentrac | this silicon oxycarbide stereolithography thing sounds kind of important actually: http://phys.org/news/2016-01-breakthrough-ceramics-3d-technology.html | 10:18 |
| xentrac | they are able to sinter the polymerized resin, which I guess is probably silicon carbide filled, to get fully dense ceramics. I'd like to read the paper | 10:19 |
| xentrac | no, no sintering; they're using a "preceramic polymer" | 10:23 |
| xentrac | (mercaptopropyl) methylsiloxane mixed with vinylmethosiloxane plus some additives for the stereolithography | 10:25 |
| xentrac | "Pyrolysis at 1000°C in argon was accompanied by 42% mass loss and 30% linear shrinkage" | 10:26 |
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| Alcyius | https://www.reddit.com/r/WritingPrompts/comments/3ze1ei/wp_aliens_find_earth_and_decide_that_our | 11:47 |
| kanzure | stop reading reddit | 11:53 |
| kanzure | it's rotting your brain | 11:53 |
| maaku | ain't that the truth | 11:58 |
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| juri_ | http://faikvm.com/20160102_184234.jpg | 12:05 |
| kanzure | not enough yellow tape | 12:09 |
| archels | it's huge | 12:14 |
| juri_ | a lot of yellow tape is out-of-frame. | 12:28 |
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| kanzure | "MusicXML has been transfered to the W3C in July 2015 and there is now a music notation community group: https://www.w3.org/community/music-notation/ " | 14:01 |
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| FourFire | kanzure, did you respond to my question about https://en.wikipedia.org/wiki/Rimonabant ? | 14:39 |
| kanzure | nope | 14:39 |
| kanzure | .wik rimonabant | 14:39 |
| yoleaux | "Rimonabant (also known as SR141716; trade name Acomplia) is an anorectic antiobesity drug that has been withdrawn from the market due to potentially serious side effects. It was approved for use in Europe and other countries, but never approved in the United States. Rimonabant is an inverse agonist for the cannabinoid receptor CB1." — https://en.wikipedia.org/wiki/Rimonabant | 14:39 |
| kanzure | dunno. | 14:40 |
| FourFire | I reckon, that I'm willing to risk "severe depression" and "intrusive thoughts" for short periods if the benefits are good enough | 14:40 |
| FourFire | in my experience my short term memory is... suboptimal, noticably causing social faux pas' and sometimes I've called someone or emailed them and not recalled it... | 14:41 |
| kanzure | i'm not convinced that you have pursued all social options. as i reclal you were still building up a good set of colleagues to work with. | 14:49 |
| xentrac | FourFire: have you ever experienced severe depression or intrusive thoughts? | 14:52 |
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| FourFire | xentrac, well I don't know about "severe". but I've overcome a depression which lasted over six months in the past, and with that followed suicidal thoughts (and quite a few occasions where I seriously contemplated suicide) | 14:58 |
| FourFire | kanzure, sure, just wondered whether you've come across it before. | 14:58 |
| xentrac | that sounds like mild clinical depression, rather than severe depression | 14:59 |
| FourFire | oh and I experience intrusive thoughts several every times week or so | 14:59 |
| FourFire | why just today, I was wondering how quickly I could ruin the metro driver's day by frying myself on the tracks ... | 15:00 |
| FourFire | really annoying that, but it's just something I have to deal with. | 15:00 |
| xentrac | have you ever been having an interesting conversation when suddenly you stopped talking because you were suddenly reminded of something you'd done wrong a year earlier? | 15:01 |
| kanzure | xentrac: my diagnosis is that FourFire needs better friends, a different social environment from what he was previously inserting himself into, and to pick better goals probably under the supervision of more experienced individuals | 15:03 |
| FourFire | xentrac, yeah :( | 15:03 |
| FourFire | but most of my conversation aren't very interesting, so it's more interesting at that point to explain to my s/victim/conversational partner/ exactly why them mentioning shoes made me grimace and pause | 15:04 |
| kanzure | was the thing you were going to say something like "i put my shoes on the wrong feet last year"? | 15:05 |
| xentrac | FourFire: all in all it sounds pretty unpleasant. maybe kanzure is right that better friends will help | 15:05 |
| FourFire | I think my goals are okay... I just need to make use of some sort of organizational structure which connects them to the present, and actions I can make on a day to day basis | 15:05 |
| xentrac | yeah, organizing our lives in alignment with our goals is hard | 15:06 |
| FourFire | I seem to be rather bad at setting short and medium term goals and actually reaching them... | 15:06 |
| FourFire | I should be sleeping now, talk later | 15:06 |
| kanzure | iirc the last goal you set was "solve protein folding" | 15:07 |
| kanzure | which is an interesting goal, but not necessarily the correct goal for you at the moment | 15:07 |
| FourFire | uh, now listen here, my goal isn't anywhere near that | 15:07 |
| kanzure | :-) | 15:07 |
| FourFire | it's "make a tool which can automate design of arbitrary proteins based on a fitness function" thus turning the design problem into "a whopping great big pile of computation" problem, which will be solve by a whole load of people much smarter and more competent than me, especially since it has a global economy pushing it forwards | 15:09 |
| FourFire | secondary goal is "use said tool to solve one problem in biology" | 15:10 |
| FourFire | that just happens to be the information loss in DNA problem, but low hanging fruit first, right? | 15:10 |
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| xentrac | yeah, protein folding in general is a much harder problem than that | 15:28 |
| xentrac | because you have to predict the folding of proteins that you didn't design | 15:28 |
| xentrac | if you're designing them you can restrict it to proteins that are easy to predict | 15:28 |
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| nmz787_i | sup | 15:58 |
| nmz787_i | did I miss anything in the past ~2 weeks? | 15:59 |
| kanzure | jules is working for your employer now | 16:00 |
| kanzure | some brain uploading startup paid the channel a visit | 16:00 |
| xentrac | nmz787_i: you can do stereolithography in silicon oxycarbide by using preceramic polymer resins | 16:01 |
| xentrac | nmz787_i: Ian Murdock killed himself after being beaten and raped by the police | 16:02 |
| xentrac | nmz787_i: webrecorder.io is a web service that will crawl sites you want to archive and generate a downloadable WARC file for you, which you can then view with pywb or similar tools | 16:03 |
| kanzure | and springer leak | 16:03 |
| xentrac | oh yeah, Springer released a hundred thousand books as open access | 16:04 |
| xentrac | then changed their mind | 16:04 |
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| xentrac | sci-hub got their domain back. we found out a lot about easy high-vacuum systems; a good overview is at http://www.belljar.net/2011_csl_vacuum_overview.pdf | 16:04 |
| kanzure | the science pirate fairy told me about 900 GB was retrieved | 16:04 |
| AdrianG | so that was actually official? | 16:05 |
| AdrianG | not a glitch? | 16:05 |
| xentrac | we have no reason to believe it was a glitch or that it was official | 16:05 |
| AdrianG | kanzure: are they on torrents now? | 16:05 |
| kanzure | no | 16:05 |
| xentrac | Sandia announced a 3D printing process with a ceramic slurry squeezed through a sponge: http://www.sandia.gov/media/robocast.htm | 16:05 |
| AdrianG | what a waste. | 16:05 |
| xentrac | we found a fabulous would-be SKDB component about vacuum technology as it historically developed: http://accounts.smccd.edu/mcomberj/AVS_Timeline.pdf | 16:06 |
| xentrac | there's an EDSL for GPGPU programming on the Raspberry Pi in Python: https://github.com/nineties/py-videocore | 16:06 |
| kanzure | jrayhawk: one of the papers i was looking at recently suggested that human cortex ballooning was because better cognitive control algorithm to better exploit existing cognitive cortical information processing functions. and then ballooning soon after once additional fitness benefit could be extracted in the first place. | 16:07 |
| xentrac | Argentina is releasing its exchange rate peg to the dollar, removing one significant Bitcoin constituency (did you know Coinbase was started here?) | 16:08 |
| jrayhawk | link plz | 16:08 |
| xentrac | and energy prices will probably stay low for a few years: ttp://www.juancole.com/2015/12/36barrel-democrats-presidency. | 16:09 |
| xentrac | uh http://www.juancole.com/2015/12/36barrel-democrats-presidency.html | 16:09 |
| xentrac | that's my summary of the past ≈2 weeks | 16:09 |
| kanzure | jrayhawk: and, also, motor control and automaticity (like from cerebellum) as innerveating cerebral cortex for fine-tuning and control of information processing (as a sort of cognitive regulation or homeostasis). | 16:09 |
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| kanzure | hm which paper was this... | 16:09 |
| xentrac | oh and SpaceX landed a rocket first stage after launching satellites to orbit from it | 16:10 |
| kanzure | jrayhawk: page 5 here is the one that mentions the increased innerveating compared to monkeys http://diyhpl.us/~bryan/papers2/neuro/Cerebellar%20networks%20with%20the%20cerebral%20cortex%20and%20basal%20ganglia.pdf | 16:14 |
| nmz787_i | kanzure: pinged jules, thx | 16:14 |
| kanzure | oh you are actually reading logs | 16:15 |
| nmz787_i | xentrac: I'm not sure how | 16:15 |
| kanzure | jrayhawk: maybe also http://diyhpl.us/~bryan/papers2/neuro/The%20cerebro-cerebellum:%20Could%20it%20be%20loci%20of%20forward%20models%3f.pdf | 16:16 |
| kanzure | jrayhawk: and page 17-18 (maybe last part of page 16) of http://diyhpl.us/~bryan/papers2/neuro/cognitiveconsilience/Cognitive%20consilience:%20Primate%20non-primary%20neuroanatomical%20circuits%20underlying%20cognition%20-%202011.pdf | 16:18 |
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| xentrac | I wonder what nmz787_i was not sure how about | 16:27 |
| kanzure | on a slightly related note, this was a neat paper that showed off mathematical modeling of different cortical information processing behavior through simulation of simplified representative equation http://diyhpl.us/~bryan/papers2/neuro/Selection%20of%20cortical%20dynamics%20for%20motor%20behaviour%20by%20the%20basal%20ganglia.pdf | 16:27 |
| chris_99 | https://media.ccc.de/v/32c3-7341-so_you_want_to_build_a_satellite#video was really interesting i thought | 16:38 |
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| nmz787_i | kanzure: no, just what you sent a few mins ago | 19:55 |
| nmz787_i | xentrac: I'm not sure how "high vacuum" that PDF is about... for the feedthrough section for example, it doesn't give any mention of pressures as far as I could tell. | 19:55 |
| nmz787_i | (i got disconnected as I sent that last message) | 19:56 |
| nmz787_i | it also only seems to cover diffusion pumps, which aren't necessarily high enough for molecular assembly, mass spec, FIB, electron beam nm scale beamwidth, etc | 19:57 |
| nmz787_i | when my connection died, I went to the lab where my SEM is being stored and replaced the caster wheels... it now wheels around a smooth floor with ease. I also learned there is a roughing pump installed in the cabinet with the diffusion pump. | 19:59 |
| nmz787_i | In bringing home the spare HV electronics module, spare roughing pump (without electric drive motor), and spare diffusion pump... I learned (or remembered) the roughing pump itself weighs something like 70 or 80 pounds. | 20:00 |
| nmz787_i | without the motor | 20:00 |
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| xentrac | nmz787_i: yeah, it only covers diffusion pumps. there's a good diagram on p.5 about what kinds of pumps can reach what kinds of pressures, and what kinds of pressures are needed for what kind of applications | 20:21 |
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| xentrac | in particular for SEM/TEM microscopy it says you need 10⁻⁷ torr (about 10 microspascals) and that all kinds of high-vacuum pumps can reach that | 20:23 |
| xentrac | although I guess you knew that because your SEM uses a diffusion pump ;) | 20:24 |
| xentrac | our discussion suggested that you could probably do mass spectrometry at an even lower vacuum if it's sufficiently small (which I guess also means a sufficiently high magnetic field?) | 20:25 |
| xentrac | WP says, "Although its use has been mainly associated within the high-vacuum range (down to 10−9 mbar), diffusion pumps today can produce pressures approaching 10−10 mbar when properly used with modern fluids and accessories." 10⁻¹⁰ mbar is 10 nanopascals | 20:27 |
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| xentrac | diffusion pumps do backstream, and that's a big problem for some applications | 20:28 |
| CaptHindsight | http://spectrum.ieee.org/biomedical/devices/dna-manufacturing-enters-the-age-of-mass-production | 20:29 |
| nmz787_i | CaptHindsight: not much new there, just downscaling existing and not much of an apparent breakthrough | 20:33 |
| xentrac | (which is off the top of the chart there on p.5) | 20:35 |
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| CaptHindsight | nmz787_i: happen to know their chemistry of choice? | 20:51 |
| nmz787_i | I think it's just gibson assembly | 20:59 |
| nmz787_i | or goldengate | 20:59 |
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| CaptHindsight | I was more surprised that someone built production equipment | 21:03 |
| CaptHindsight | not by any tech breakthrough | 21:03 |
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| nmz787_i | xentrac: my SEM is ~30 years old though... any decent unit today will come standard with a turbo pump and likely an ion getter pump too. The higher end models needing more resolution or less noise will forego the turbo for an oil diffusion pump with a cold trap for backdraft oil... but they all have the ion getter pumps (IGPs) | 21:33 |
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| nmz787_i | at least that's what I think... | 21:34 |
| xentrac | I don't know anything about IGPs | 21:34 |
| docl | I don't see anything about getters in the chart, for some reason. Ion is mentioned. | 21:34 |
| xentrac | it's talking about ion diffusion pumps, docl | 21:34 |
| docl | isn't ion separate from diffusion? | 21:35 |
| xentrac | getters (particularly in the form of cryopumps) predate all the more mechanical pumping methods of achieving high vacuum, which is how it was possible to build an Audion in 1903 or whenever it was | 21:35 |
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| xentrac | normally a "diffusion pump" is an oil diffusion pump | 21:35 |
| xentrac | originally it was a mercury diffusion pump, which worked the same way but used mercury; modern oils are better on a lot of axes | 21:36 |
| nmz787_i | IGPs are usually high voltage and cause molecules to oxidise and deposit on parallel plates | 21:36 |
| nmz787_i | well maybe they could also reduce and not just oxidise... idk | 21:36 |
| xentrac | I see | 21:36 |
| xentrac | well, they probably ionize ;) | 21:36 |
| xentrac | and once the negative ions land on the plates, they are reduced, and when the positive ions land, they are oxidized | 21:37 |
| docl | xentrac: sprengel pump was a diffusion pump, right? | 21:37 |
| xentrac | no | 21:37 |
| xentrac | the sprengel pump used liquid mercury, not mercury vapor | 21:37 |
| xentrac | it's basically a liquid piston pump | 21:37 |
| docl | ah, it has to be vapor to count as diffusion? | 21:37 |
| xentrac | I'm not sure how to answer that | 21:38 |
| xentrac | but oil and mercury diffusion pumps do use vapor | 21:38 |
| xentrac | the idea is that the gas molecules can't diffuse fast enough through the vapor to move upstream, and then you condense the vapor at the outlet of the diffusion pump, leaving just the gas | 21:39 |
| nmz787_i | hmm, I can't tell if some lower/entry level SEMs don't have ion pumps | 21:39 |
| xentrac | I think my "ion diffusion pump" doesn't exist | 21:40 |
| xentrac | and I was just confused | 21:40 |
| docl | nmz787_i: another topic we touched on while you were gone is drawing fibers as a way to achieve nanotech. | 21:46 |
| nmz787_i | or etching existing fibers with a continuosly diluted etchant | 21:48 |
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| xentrac | oh yeah, drawing preforms into glass fibers preserves their cross section limited mostly by surface tension, and you can get rid of that by making the preform out of two kinds of glass, one of which you chemically etch away after drawing | 21:50 |
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| xentrac | 10.1109/50.64916 | 21:52 |
| xentrac | "fine details with dimensions of down to 1 μm and below" | 21:53 |
| xentrac | although of course it matters a lot whether you can get down to 1 μm, 100 nm, or 10 nm | 21:54 |
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| xentrac | the difficulty of shaping existing fibers by selectively etching them is that you have to be able to position your etchant with nanometer precision if you are to get nanometer-scale features | 21:59 |
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| nmz787 | I gotta figure out slicing and g-code layer generation for my laser cutter | 22:13 |
| nmz787 | I know BRLCAD has some gcode export stuff out there | 22:13 |
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| xentrac | I'm skeptical about this idea of "G-code export" | 22:17 |
| xentrac | that sounds like a Verilog synthesis tool with an "FPGA bitstream export" | 22:18 |
| nmz787 | it must work with edges of the surfaces | 22:20 |
| xentrac | well, what I mean is that G-code nails down a lot more decisions than the ones in the solid model | 22:21 |
| xentrac | and, unlike what is typically the case with assembly code generation from a C compiler, you very often want to change those decisions because they sucked | 22:22 |
| xentrac | they depend at a minimum on what kind of material you're building things out of and the capabilities of your machinery | 22:23 |
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| nmz787 | ah, yeah, I am aiming to produce things for lithography using either a laser or some type of electron/ion beam | 22:56 |
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| juri_ | nmz787: you see my toy? http://faikvm.com/20160102_184234.jpg | 22:57 |
| juri_ | yes, i'm proud. :) | 22:57 |
| nmz787 | keeewwwwlllll! | 22:58 |
| juri_ | it's a lasercutter, and a 3d printer. | 22:58 |
| nmz787 | nice | 22:59 |
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| nmz787 | https://github.com/mbuesch/cnc/blob/master/tools/brlcad2gcode.sh | 23:04 |
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| --- Log closed Tue Jan 05 00:00:56 2016 | ||
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