2009-06-12.log

--- Day changed Fri Jun 12 2009
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kanzureforgot to cd in to the right dir to run the nightly svn zip file thingy on adl.serveftp.org :(08:02
kanzure(fixed)08:02
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kanzurevarious scripts from ADL that I've written: http://adl.serveftp.org/dokuwiki/scripts10:13
kanzureapparently Henry Gates, Sr. is currently having his genome sequenced (Bill's father)10:16
kanzurefenn: since you're reading about brains, do you remember my brain builder app? before I started working on it, what I was trying to do was figure out a way to organize the information on [[Sustained_attention]] on the mediawiki installation. 10:23
kanzurethe problem that I kept running into was that there were too many different regions of the brain and not enough .. er, organization of information10:23
kanzureso I couldn't just immediately map some research to some region of the brain because I didn't have a good data structure10:23
kanzureone way to do it might be to use a coordinate system for the brain (there are a few mentioned in the literature, one is the most popular standard but I don't recall it)10:23
kanzure"mapping the brain with GIS"10:24
kanzurewhat most people do is just get a brain scan via MRI or fMRI and then call it quits and use that for local coordinate crap10:24
kanzurebut that doesn't really help with trying to do standard coordinates for different regions10:25
kanzurepersonally I'm not convinced that all brain atlas cartographers or anatomists really know what regions of the brain they are looking at.10:25
kanzure"that's clearly the such and such region!"10:25
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ybithmm, thinking about making rubber with a dandelion today, that XOR sharpie microfluidics10:32
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kanzureybit: XOR? what?10:58
kanzurerubber with a dandelion would be a good project for the day, ybit10:58
kanzureoh, didn't see "sharpie"11:06
kanzureanyway, if you can make a rubber microfluidics device from dandelion latex, you win teh internets11:07
ybitnot quite as scientific, seems we are making jelly and wine with dandelions and muskedimes11:42
ybitas well as rubber... 11:42
ybita rubber microfluidics device? :)11:42
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kanzurewho is making jelly?12:43
kanzureI must not be understanding your context, ybit12:43
kanzurealso, whistling seems to damage my neuroreceptors12:43
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ybitwe = my dad and myself, but i'll probably be making the jelly myself, but we will both partake in the creation of wine from muskedimes which it seems come in july14:04
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ybithas anyone actually tried making a rubber band from dandelions yet? it's difficult to extract much sap14:20
ybiti've got a whole bunch dandelions and am having difficulty getting any sap from them14:20
ybitvery little has come out14:20
kanzurearen't you supposed to centrifuge it or something?14:26
kanzureare you reading the email that I sent to diybio?14:26
ybitkanzure: yeah14:27
ybiti'm reading the email but it doesn't mention centrifuge14:28
kanzureokay14:28
kanzureit probably doesn't because I'm confusing that with another memory14:28
kanzureyou should read the links I mention in it, which is from where I found the dandelion/latex stuff14:29
kanzureSTUFF!14:29
kanzureSCIENCE!14:29
ybithttps://kb.osu.edu/dspace/bitstream/1811/35948/1/OS_ENG_v26_i05_020.pdf14:30
ybitAgriculture's Rubber, from Ohio State University14:30
ybitthere's only one link and it mentions ohio state getting a large grant to make rubber from a russian dandelion14:31
ybityou can apparently make rubber from soybeans14:31
ybit                              However, the plant14:32
ybitproduces an appreciable amount of rubber only14:32
ybitwhen there is an approximately equal wet and dry14:32
ybitseason, and the wet season cannot be very wet14:32
ybit                              However, the plant14:32
ybitproduces an appreciable amount of rubber only14:32
ybitwhen there is an approximately equal wet and dry14:32
ybitseason, and the wet season cannot be very wet14:32
ybitwhoops14:32
ybitFrom accumulating evidence it is believed that14:33
ybitguayule stores rubber under its bark only through14:33
ybita rainless season. Nevertheless, it requires mois-14:33
ybitture for growth, and locations suitable for its cul-14:33
ybitture are few.14:33
ybitnote, guayule != dandelion14:35
ybitand the it seems the russian dandelion, wait for it.. native to russia14:36
ybitso i'm guessing not just any dandelion will do14:36
ybiton a positive note:   The alkale deserts of six western states hold14:36
ybit500,000,000 pounds of natural rubber—sufficient14:36
ybitto last the United States for five months—avail-14:36
ybitable for immediate harvesting, according to Uni-14:36
ybitversity of California scientists.14:36
ybit""14:37
ybitso, scratch that idea for today14:42
ybiti'll try a few other diybio ideas floating around just as soon as i get time this afternoon14:43
kanzure7-up as protoslow might be sufficiently easy if you have a microscope nearby14:54
kanzureor if you want to construct a microscope with a water drop and some glass slides and some wood frame thingy (or maybe made out of cardboard if you have some of that laying around)14:54
ybitthinking i might do something like the water droplet microscope and plan on making a thermocycler this weekend15:00
ybitor at least start construction tomorrow15:01
ybitor tonight, depends on how much time i have and how long it takes to decide on a plan15:01
ybitlooking at the heybryan.org/~bbishop/docs.thermocycler.pdf doc right now15:01
ybit/docs/ **15:02
kanzureoh really? I thought hte server was down.15:05
kanzurein fact, I know it is.15:05
kanzurehm. I need the definitions of f-circuit and f-cutset that I pasted in here a while back.15:18
* kanzure goes to dig through logs15:18
ybiti have mirroring heybryan.org15:21
ybithave been*15:22
kanzurehrm. maybe you're the one who has been causing me troubles. 15:28
kanzurehave you been doing it daily recently?15:28
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ybitnope, it was a weekly thing around sunday15:38
ybitbut my computer want by shooting for your server this weekend, it's f'd 15:38
ybitand all it does now is check to see if anything has changed, it's grabbed mostly everything there15:39
kanzureeh well I had to turn it off because I was only getting 5 KB/sec outgoing at home15:39
ybitsunday @ 1am i believe15:39
kanzure"turn it off" as in, not connect it to port 815:39
ybityikes15:39
kanzure8015:39
fennhttp://www.logarithmic.net/pfh/blog/01194868073   web of science (for realz)15:39
* ybit is off to compare workbenches at lowe's and home depot to the ones i've already found15:41
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ybitthe $25 thermocycler isn't a bad option17:11
fennindeed17:11
ybiteven thought it's roughly $10017:12
fennbut it needs a fan and possibly a valve to let the air out17:12
ybitthough*17:12
kanzurefenn and his ninja magic17:13
kanzurehe just got here and hasn't typed anything17:13
kanzureand yet I see things from him17:13
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ybitirc on cell phone perhaps?17:44
* ybit is considering purchasing http://www.amazon.com/exec/obidos/tg/detail/-/B000HDG0AO/ref=ord_cart_shr?%5Fencoding=UTF8&m=AKJ57Q9VZBBO8&v=glance17:45
ybitAoyue 968 SMD Digital Hot Air Rework Station17:46
ybitnot the best, but it's the only decent soldering station i can find with a hot air gun and still relatively cheap17:46
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fennhttp://www.theonion.com/content/video/experts_agree_giant_razor_clawed?utm_source=a-section18:23
fennExperts Agree Giant, Razor-Clawed Bioengineered Crabs Pose No Threat18:23
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kanzurewhen I bring my giant razor-clawed bioengineered crabs to them, we'll see who's who.18:25
fennwho's who in mad science?18:29
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ybitthe urinomics projects/spectrophotometer, i like it18:31
ybiti have an extra arduino lying around18:31
kanzurehttp://science.slashdot.org/story/09/06/12/0352217/Teen-Diagnoses-Her-Own-Disease-In-Science-Class?art_pos=2018:31
kanzureteen diagnoses herself, doesn't die18:31
fennwhy? it barely works. are they even getting quantitiative data from it?18:31
ybiti don't think they have produced anything yet18:32
fennit's just some LED's stuck to an arduino18:32
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kanzureblink blink blink18:44
kanzurelook, science!18:44
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ybitmaking the microscope right now19:05
ybitwow, i need my glasses to see through that tiny hole19:11
ybityou know your hand can magnify as well, right?19:11
kanzurewith water on it19:11
ybityou = anyone19:11
ybitno water required19:13
ybithaving a tough time finding a link19:14
ybitmay just have to take a pic of my hand formation19:14
ybitall you do is curl your fingers into a fist and use the hole as the magnifying glass, may take a little practice, but it does magnify about 1.5x19:15
kanzurehttp://code.google.com/p/python-graph/19:15
kanzureI've done that before. doesn't seem to work much though.19:16
ybitalright, time to go test out the paperclip microscopes :)19:16
ybitit works19:29
ybita pita to use though :P19:29
ybiti'm about to be blown away by the storm here19:30
ybitanyone have the pdfs linked to from http://groups.google.com/group/diybio/browse_thread/thread/bf7f21047d4499e7/489c2e38afd56d82?lnk=raot&pli=119:34
ybit"microscopes out of water"19:35
ybiti'd also like http://heybryan.org/books/papers/Capillary%20flow%20control%20using%20hydrophobic%20patterns.pdf20:06
ybitnm, on the serverftp.org site20:07
ybitnot the water microscope papers though20:11
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ybitprobably behind, but wow: http://citsci.blogspot.com/2009/05/for-diybio-lab.html21:03
ybitthat's a lot interesting ideas for a la21:03
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ybitit gave me an idea, when i get the neorunner in october, maybe it can be my oscillope21:06
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kanzure- count the number of incoming edges for each node. O(n+e)21:18
kanzure- put each node with 0 incoming edges in a set S. O(n)21:18
kanzure- while S has nodes:21:18
kanzure- take a node n from S.21:18
kanzure- delete n and update the number of incoming edges of the nodes connected to n. if any of those nodes now have 0 incoming edges, put them in S.21:18
kanzure- endwhile O(n+e)21:18
kanzure- if S is empty put there are still nodes left, you have cycle.21:18
drazak_can someone explain me the difference between weight and mass, and why this difference is important?21:21
kanzureweight is a force that results from the action of gravity on a mass21:27
drazak_hmph21:31
drazak_I mean21:31
drazak_I knew that21:31
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drazak_in absense of gravity, how does one measure mass?21:32
kanzureprobably by accelerating it to the speed of light or something21:33
kanzuremaybe mass isn't the right idea in the first place?21:34
kanzuregravity is one of those sketchy thingies21:34
drazak_so in absense of gravity, I can't measure reactions for chemistry?21:35
kanzurewhat?21:35
drazak_er21:35
drazak_reactants, for a chemical reaction21:36
kanzuremass spec?21:36
drazak_that seems way too complicated21:36
ybitkanzure: can you link me to the papers linked from https://mail.google.com/mail/?shva=1#inbox/12024144c38c1dd621:37
kanzurewhat the fuck is that link21:37
ybitit's your 'microscopes out of water' diybio post21:38
ybitlooking for the papers mentioned @ the bottom21:39
ybitWater-drop projector21:39
ybithttp://heybryan.org/books/papers/Water-drop%20projector.pdf21:39
ybitWater droplet lens microscope and microphotographs21:39
ybithttp://heybryan.org/books/papers/Water%20droplet%20lens%20microscope%...21:39
ybitFast focusing using a pinned-contact oscillating liquid lens21:39
kanzureyeah that should be on http://adl.serveftp.org/papers/21:39
ybithmmm21:39
kanzureor not21:39
ybit:)21:39
ybityeah, already looked21:40
kanzurewell it's in the .tar file in there21:40
ybitah, okay.. then i wasn't looking in the correct place on me puter21:42
ybitCapillary flow control using hydrophobic patterns.pdf21:50
ybitack21:50
ybitnot finding Water-drop-projector.pdf21:50
ybitmaybe i chroot into the machine and use locate21:51
ybitnope, that didn't show anything21:52
kanzuredid you look in the tar file?21:54
kanzureanyway it's a drop of water on the bottom of a syringe21:55
kanzureand a laser attached to it21:55
kanzureso it's a shadow-based projector of whatever the hell is in the water drop21:55
ybityeah, i had extracted the files to a particular location previously21:58
ybitanywho21:58
ybitbtw, bryan, i went ahead and removed the mirror heybyran.org cron task 22:17
fenndrazak_: resonance frequency depends on mass and is easily measured23:13
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fennit's how quadrupole mass spec's work actually23:14
fennbut you'd probably be doing something with springs (super fancy quartz springs no doubt)23:15
genehackerhmmmm....23:15
fenndon't get too excited now23:15
genehackernow where can I get thin film polyethylene sandwiching a layer of metal...23:19
fennthey dont make polyethylene with enough purity for high voltage insulation since the 60's23:19
fennsorry dude23:19
fennget a better dielectric. barium titanate might be up to it23:20
genehackeris barium titanate flexible?23:21
fennno23:21
genehackererrr... just metal coated polyethylene23:21
fennwell.. everything is rather flexible if you make it thin enough23:21
genehackerguess23:21
genehackerso23:21
genehackerthis one company makes flexible diamond sheets23:22
genehackerreally really thin films23:26
genehackerI wonder if you can make flexible barium titanate films23:33
genehackeron plastic or metal23:33
fennwhat do people do for fun on the weekends?23:34
fennin austin, in summer23:34
genehackerI'm not sure23:35
fennsurely someone must know23:35
genehackeri'm trying translate a patent into a useful algorithm for generating gear profiles23:39
genehackerhttp://www.google.com/patents?id=VzkhAAAAEBAJ&printsec=abstract&zoom=4&source=gbs_summary_r&cad=0_0#PPA19,M123:39
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