| --- Day changed Fri May 01 2009 | ||
| genehacker | hey do you know how we can get flourescenet labeled bases | 00:18 |
|---|---|---|
| genehacker | because if we can we can make a DNA sequencer using a microfluidic chip | 00:18 |
| kanzure- | fluorophores.org | 00:31 |
| kanzure- | pyrosequencing, you mean? | 00:31 |
| genehacker | you look at the DNA under a microscope as it passes through the channel | 00:33 |
| kanzure- | based off of the color? | 00:33 |
| genehacker | yeah | 00:33 |
| kanzure- | there's a company that makes tags for different amino acid sequences | 00:33 |
| kanzure- | but the problem is that it is still experimental | 00:33 |
| genehacker | yeah | 00:39 |
| genehacker | did you hear about this one company that has made tags for all 4096 combinations of 6 letter DNA | 00:39 |
| genehacker | also you might want to check out pressure driven microfluidics in the library | 00:42 |
| kanzure- | but how do you establish a pressure without big pumps | 00:46 |
| kanzure- | I guess you can do a twisting screw pressure system | 00:46 |
| kanzure- | but then you need a mechanism to twist/untwist the screw | 00:46 |
| genehacker | there's a book on that in the engineering library | 00:56 |
| genehacker | concerned with the design of micropumps, microvalves, and other microfluidic stuff | 00:56 |
| genehacker | so I'm wondering about thinking about visualizing DNA as images | 01:05 |
| genehacker | each pixel of the image would be one of 4 different colors | 01:06 |
| genehacker | http://www.physics.rutgers.edu/ugrad/387/388s06/film_deposition/Musgraves05.pdf | 01:11 |
| genehacker | :) | 01:11 |
| -!- any40932005 is now known as katsmeow | 01:13 | |
| genehacker | microscope + projector= maskless litho machine | 01:18 |
| genehacker | and guess what? | 01:18 |
| genehacker | DLP projectors have a uv filter | 01:18 |
| genehacker | you know what that means! | 01:18 |
| kanzure- | didn't fenn suggest using a projector a few weeks ago? | 01:21 |
| genehacker | not only that but projectors use mercury lamps!! | 01:27 |
| genehacker | that's exactly what we need | 01:28 |
| kanzure- | genehacker: did you see the spiderman-suit paper? | 02:10 |
| genehacker | yeah | 03:04 |
| genehacker | why | 03:04 |
| genehacker | still reading it | 03:04 |
| genehacker | what's the holding force per area? | 03:05 |
| genehacker | IE area a of nanotubes supports how much weight? | 03:05 |
| kanzure- | that's something based off of van der Waals adhesion forcesz | 03:08 |
| genehacker | yeah I know | 03:09 |
| genehacker | but what did they get it? | 03:10 |
| genehacker | or what's a typical value for nanotube based adhesion film | 03:10 |
| genehacker | 100 newtons per square centimeter in the shear direction | 03:14 |
| genehacker | not bad | 03:14 |
| genehacker | for a 300 lb person this means an area of 13 cm is required to support them while climbing(not hanging from ceiling) | 03:16 |
| genehacker | cm^2 | 03:17 |
| genehacker | so about a 4 cm side square of this stuff could support you | 03:18 |
| genehacker | if you didn't hang from the ceiling | 03:18 |
| genehacker | that's about the area of your hand | 03:20 |
| genehacker | hmmm... | 03:20 |
| kanzure- | in the gecko, the feet pads "peel back" to disconnect, but if you are using your hand, I don't think you could "peel" your hand off like that. your hand doesn't *bend* that way. | 03:21 |
| genehacker | to hang from the ceiling you need 133 square centimeters | 03:22 |
| genehacker | that works out to a square 12 cm squared | 03:22 |
| genehacker | not bad | 03:22 |
| genehacker | so something about the size of a glove could hold you up with one hand | 03:23 |
| genehacker | this is with a low safety factor though | 03:24 |
| genehacker | so increase the area a bit | 03:24 |
| genehacker | wonder what the safety factor of climbing rope is? | 03:25 |
| genehacker | hmmmm... something about the size of a silicon wafer should do | 03:27 |
| genehacker | how do you make hierachially branched nanotubes | 03:29 |
| kanzure- | is that what you need? | 03:33 |
| kanzure- | I thought you just need a CNT forest of some sort | 03:33 |
| kanzure- | hrm. Random file I just found. "How to make a BOM with GNU make.html" | 03:34 |
| genehacker | yeah | 03:34 |
| genehacker | or something like that | 03:34 |
| kanzure- | so you're effectively asking how to make CNTs? :p | 03:34 |
| kanzure- | http://heybryan.org/books/papers/2009-03-21_CNTs.zip | 03:35 |
| genehacker | so if we coat about 4 wafers of some sort of flexible material with these nanotubes | 03:35 |
| genehacker | then we could scale RLM | 03:35 |
| kanzure- | RLM? | 03:35 |
| genehacker | the big building near the engineering buildings | 03:36 |
| kanzure- | oh. the building. | 03:36 |
| genehacker | tallest building on campus | 03:36 |
| genehacker | the one with the telescope on top and the petawatt laser in the basement | 03:36 |
| kanzure- | real-time dynamic prediction, visualization and modulation of human brain gene expression via 3D laser-targeted gene silencing | 03:49 |
| genehacker | interesting | 03:49 |
| kanzure- | sorry, doesn't exist yet :) | 03:49 |
| genehacker | ah man | 03:50 |
| genehacker | why do you want to manipulate gene expression in brain cells? | 03:50 |
| kanzure- | brain augmentation | 03:50 |
| genehacker | oh | 03:50 |
| genehacker | have you figured out what you need to augment? | 03:51 |
| kanzure- | I think it might be possible to make it possible to "flip a switch" to change states of mind | 03:51 |
| kanzure- | for instance, if you record the expression of mRNA responsible for "holy shit my most brilliant moment", or something, | 03:51 |
| kanzure- | or "holy shit, I feel great" or "holy shit, this feels piss-terrible" | 03:51 |
| kanzure- | then you could tweak things more to those states | 03:52 |
| kanzure- | there have been studies of gene expression in parts of the human cortex, but not anything about real-time stuff. | 03:52 |
| kanzure- | although there has been some implant studies or something | 03:52 |
| kanzure- | where different mRNA samples are taken at different times | 03:53 |
| kanzure- | it's a microdialysis machine. er, that's not the right name, but it's kinda like that | 03:53 |
| kanzure- | anyway, it's not very portable | 03:53 |
| genehacker | how do you record the RNA responsible | 03:53 |
| kanzure- | tiny micropipette | 03:54 |
| genehacker | hmmmm... there was something in that microfluidics book I read today about microfluidic neural interfacing | 03:54 |
| kanzure- | wow I don't have any papers on this? wtf | 03:54 |
| genehacker | or something like that | 03:54 |
| genehacker | it involved needles | 03:54 |
| kanzure- | right | 03:55 |
| kanzure- | it's like patch-clamp | 03:55 |
| genehacker | http://books.google.com/books?id=WZDOAAAACAAJ&source=gbs_ViewAPI | 03:57 |
| genehacker | argh | 03:57 |
| kanzure- | Following whole-cell patch-clamp recording, mRNA can be harvested from living cells by aspirating the cytoplasm into the patch-clamp pipette. Transcripts expressed in the recorded neuron can then be amplified by RT-PCR. | 03:57 |
| genehacker | that's teh book I read | 03:57 |
| genehacker | damn not available online | 03:57 |
| genehacker | oops wrong book | 03:58 |
| genehacker | i think | 03:58 |
| genehacker | http://www.google.com/url?sa=t&source=web&ct=res&cd=1&url=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Db0BTNNlzc9QC%26pg%3DRA1-PA207%26lpg%3DRA1-PA207%26dq%3Dmicrofluidic%2Bexternal%2Bflow%2Bcontrol%26source%3Dbl%26ots%3DRvzlk7FR8r%26sig%3DLZMLWjaDsUVlyJJs-yanhFob8bE%26hl%3Den%26ei%3DVHP6SZOwHKKatAPis-jhAQ%26sa%3DX%26oi%3Dbook_result%26ct%3Dresult%26resnum%3D1&ei=VHP6SZOwHKKatAPis-jhAQ&usg=AFQjCNG | 03:59 |
| genehacker | YkonrKl7Sr77mtCtBKpRzlF8fxQ&sig2=y80gA-EnkVyORd04Fav5lw | 03:59 |
| genehacker | woo internet | 03:59 |
| genehacker | they don't have the whole thing? | 04:01 |
| kanzure- | "RNAi-Induced Gene Silencing by Local Electroporation in Targeting Brain Region" | 04:05 |
| kanzure- | sounds like a bad idea | 04:05 |
| kanzure- | they were doing it to V1 | 04:05 |
| genehacker | V1? | 04:06 |
| kanzure- | visual area V1 | 04:08 |
| genehacker | in humans? | 04:09 |
| kanzure- | rtats | 04:12 |
| kanzure- | rats | 04:12 |
| genehacker | ok | 04:13 |
| fenn_ | i really doubt brain gene expression has any effect on how you feel | 04:23 |
| -!- fenn_ is now known as fenn | 04:23 | |
| kanzure- | er, regulation of neurotransmitter production? | 04:30 |
| kanzure- | they aren't coming from nowhere | 04:32 |
| -!- katsmeow is now known as katsmeow-afk | 04:45 | |
| kanzure- | although the point isn't really feeling-modulation | 04:46 |
| kanzure- | but if you can't tell that something is different, what's thep oint? | 04:46 |
| kanzure- | *point | 04:46 |
| fenn | there could be objective differences even if not any subjective differences | 04:52 |
| -!- fenn_ is now known as fenn | 07:14 | |
| fenn | "Scientists from Delft University of Technology in the Netherlands harnessed energy from the wind by flying a 10-sq metre kite tethered to a generator, producing 10 kilowatts of power." | 07:40 |
| fenn | 1kW/square meter of 'stuff' is pretty damn good by any measure | 07:40 |
| fenn | that's better than orbital monocrystalline solar panels | 07:41 |
| faceface | fenn: that sounds awesome | 07:46 |
| faceface | linky? | 07:46 |
| fenn | sorry i closed the window; guardian fluff article | 07:49 |
| fenn | see http://en.wikipedia.org/wiki/Laddermill | 07:49 |
| fenn | http://www.guardian.co.uk/environment/2008/aug/03/renewableenergy.energy | 07:49 |
| genehacker | yeah | 07:53 |
| genehacker | it is have you seen the ted talk on kite power | 07:54 |
| genehacker | wait a second 100 megawatts? | 07:55 |
| genehacker | how big? | 07:55 |
| genehacker | and how much? | 07:55 |
| genehacker | 480 megawatts is about how much a decent sized powerplant puts out | 07:56 |
| fenn | tu delft webpage on laddermill leaves much to be desired | 07:57 |
| fenn | the movie doesn't even show it working, just a pan/orbit shot around the scene | 07:57 |
| genehacker | well ted talk about kite power shows a video | 07:58 |
| genehacker | worked on a windy california coast though | 07:58 |
| fenn | yes, that's makani | 07:58 |
| fenn | gosh.. they have video from an airplane of their stupid kite | 08:00 |
| genehacker | so what are the specs on the ladder mill? | 08:02 |
| fenn | omg wind tunnel testing of a kite? | 08:02 |
| genehacker | it's true | 08:04 |
| genehacker | they do that | 08:04 |
| genehacker | so don't winds continously blow above some height? | 08:04 |
| fenn | yes, more or less | 08:05 |
| fenn | it's like 95% | 08:05 |
| genehacker | oh yeah the jetstream | 08:06 |
| genehacker | what do you mean 95% | 08:06 |
| faceface | can we make a space ladder? | 08:07 |
| genehacker | yeah sure | 08:07 |
| genehacker | 100 megawatts they say | 08:07 |
| faceface | electricity for 100,000 homes - I heard a physicist who was angry about that term | 08:07 |
| genehacker | hmmm... | 08:08 |
| genehacker | my thermo professor doesn't like that term either | 08:08 |
| faceface | 'homes' - a very misleading unit | 08:08 |
| faceface | so the blades of a regular wind turbine are in the air? or teh electricity is generated by the tug? | 08:09 |
| * faceface checks wiki | 08:09 | |
| faceface | yeah, that movie was seeming to suggest that you would haul up blades ... my mistake | 08:11 |
| genehacker | they're in the air | 08:11 |
| faceface | kites | 08:11 |
| genehacker | http://en.wikipedia.org/wiki/File:Vestasturbine.jpg | 08:17 |
| genehacker | you see this wind turbine? | 08:17 |
| genehacker | it only puts out 660 kw | 08:18 |
| genehacker | and was very expensive | 08:18 |
| fenn | there is lots of stupidity in the renewable energy field | 08:20 |
| fenn | faceface: the kites just pull on that rope which turns a winch | 08:21 |
| faceface | fenn: right | 08:22 |
| faceface | how much would the rope cost to get to the really fast winds? | 08:22 |
| genehacker | so I wonder what you do about atmospheric turbulence | 08:23 |
| genehacker | what happens when your kites fly into a storm cloud | 08:23 |
| faceface | DON'T CROSS THE BEAMS! | 08:23 |
| faceface | what happens when you hit one in a plane? | 08:23 |
| genehacker | you don't | 08:24 |
| faceface | good idea | 08:24 |
| genehacker | you don't fly planes near it | 08:24 |
| faceface | but I got the impression they would be well above storm clouds | 08:24 |
| genehacker | or you have some weird system that flys the kite away from planes | 08:24 |
| genehacker | no | 08:25 |
| faceface | wut altitude? | 08:26 |
| faceface | wut roap for dat? | 08:26 |
| genehacker | steel cable | 08:26 |
| faceface | how high can you go with that? | 08:26 |
| genehacker | dunno | 08:26 |
| genehacker | use google | 08:26 |
| faceface | think for myself? you you insane? | 08:27 |
| fenn | steel would weigh too much | 08:34 |
| fenn | you want something like dyneema/spectra | 08:35 |
| fenn | high specific tensile strength | 08:35 |
| fenn | of course the idea is to do it reasonably cheaply, so perhaps "normal" materials like kevlar or nylon would be suitable | 08:35 |
| fenn | faceface: there's another version called 'flying windmill' that is basically a tethered electric helicopter driven in reverse | 08:36 |
| fenn | http://www.skywindpower.com/ | 08:37 |
| faceface | does the sun produce much in the way of microwaves? | 08:40 |
| fenn | um, good question | 08:44 |
| fenn | what do you mean 'much'? | 08:44 |
| fenn | as a portion of total power output? | 08:45 |
| fenn | i think the sun only produces microwave as a result of 'churning' in coronal mass ejections | 08:49 |
| fenn | so, that is to say, not very much | 08:49 |
| faceface | no, just enough to focus into some kind of dynamical plama-hydrodynamic structure | 08:49 |
| fenn | less than radio, and far far less than infrared | 08:49 |
| fenn | what are you writing a sci-fi novel now? | 08:50 |
| faceface | ;-) | 08:50 |
| faceface | probably | 08:50 |
| faceface | but plasma absorbs microwaves... I guess you can't get a plasma in a vacuum | 08:50 |
| fenn | i suggested to my mom for one of her novels in which the sun was 'alive' and conscious and communicating to earthlings via maser-induced acoustic hallucinations | 08:50 |
| faceface | cool | 08:51 |
| faceface | azimov wrote something similar | 08:51 |
| fenn | dunno if she ever got around to writing it | 08:51 |
| faceface | ;-) | 08:51 |
| fenn | asimov wrote about everything and butchered half of it | 08:51 |
| faceface | hehe | 08:51 |
| fenn | btw the sun is 99% plasma | 08:51 |
| faceface | fenn: but it has some mass to hold it in once place | 08:52 |
| fenn | if it werent plasma it couldnt emit microwaves or radio | 08:52 |
| faceface | one | 08:52 |
| faceface | I'm thinking of an orbital generator | 08:52 |
| fenn | orbiting what? earth? | 08:52 |
| faceface | yeah, or some remote planet | 08:52 |
| fenn | and capturing microwave radiation? | 08:52 |
| faceface | generating electricity from microwaves | 08:53 |
| fenn | i think you've got it somewhat backwards | 08:53 |
| faceface | ;-) | 08:53 |
| fenn | all the solar power proposals from the 70's were based on capturing visible to ultraviolet light, converting to electricity and then beam via phased array to a huge microwave receiver on earth | 08:53 |
| faceface | right | 08:54 |
| faceface | as asimov wrote | 08:54 |
| fenn | oh shut up about asimov | 08:54 |
| faceface | lol | 08:54 |
| faceface | but I was thinking that plasma-magnetodynamics would be one way to convert light to electrical curent | 08:55 |
| fenn | if i ever build a time machine i'm so going to assassinate reagan | 08:55 |
| * faceface makes a mental note - don't support fenn tachion research | 08:55 | |
| fenn | no, plasma doesn't have the bandwidth to absorb light energy | 08:56 |
| faceface | I read about tachions first in a book by azi...never mind | 08:56 |
| faceface | fenn: right, it absorbes microwaves | 08:56 |
| fenn | i'd like to make a distinction here between 'light' and 'microwave' so as to retain some clarity of communication | 08:56 |
| fenn | 'light' being something you can see | 08:57 |
| faceface | fenn: isn't it all electro magnetic radiation? /me checks his useless physics | 08:57 |
| fenn | sure but so is everything | 08:57 |
| fenn | e = mc^2 = h*lambda | 08:57 |
| faceface | smarty pants | 08:57 |
| fenn | lies! | 08:58 |
| faceface | I'm talking about a magnetic field entangled with an electric one that propagates though space at top speed | 08:58 |
| fenn | you were talking about a plasma rectenna | 08:59 |
| fenn | or susceptor | 08:59 |
| faceface | erm... not sure really... hence 'probably sci-fi' | 08:59 |
| fenn | hint: metals have much higher conductivity at realistic temperatures and pressures | 09:00 |
| faceface | I think they're doing it wrong | 09:01 |
| fenn | you know, a light sail kite generator would actually be pretty efficient in terms of mass to power ratio | 09:01 |
| faceface | you don't apply the magnetic field, you guide the one that the plasma generates spontainiously | 09:01 |
| faceface | thats why I wonder about the cost of rope | 09:02 |
| fenn | well, what is 'cost' anywya | 09:02 |
| fenn | i mean, anything in orbit costs more than its weight in gold | 09:02 |
| * faceface prices himself in raw material terms | 09:03 | |
| fenn | so does it make sense to drop that platinum asteroid into the outback or not? | 09:03 |
| * faceface goes off to sell a kidney | 09:03 | |
| fenn | well, you'd weigh less :P | 09:03 |
| faceface | you can grow multiple kidneys | 09:03 |
| faceface | some people | 09:03 |
| faceface | I mean like 4 | 09:03 |
| faceface | anyway, nice talking to you | 09:04 |
| fenn | hrmph | 09:04 |
| faceface | boosh! | 09:05 |
| genehacker | faceface read this: | 09:33 |
| genehacker | http://www.prometheus2.net/ | 09:33 |
| faceface | ty | 09:33 |
| genehacker | if you are into plasma | 09:33 |
| genehacker | or any alexander bolonkin paper on arxiv | 09:33 |
| faceface | tyty | 09:34 |
| faceface | I'd like to run some plasmamagnitodynmics simulations | 09:34 |
| faceface | "compound plasma configuration" - sounds cool | 09:42 |
| faceface | genehacker: awesome | 09:44 |
| genehacker | plasma that supposedly can support aneutronic fusion | 09:44 |
| faceface | wutsz that? | 09:45 |
| genehacker | fusion without the nasty neutrons | 09:45 |
| faceface | I'm really bad a parsing words like that | 09:45 |
| genehacker | you also extract energy from the plasma by bouncing it through a coil of wire at 60 hz | 09:46 |
| faceface | aneu-tronic | 09:46 |
| faceface | right | 09:46 |
| genehacker | passing it through a coil removes some of the internal energy of the plasma | 09:46 |
| faceface | just the kind of thing I was thinking | 09:46 |
| faceface | (only naturally I didn't have any details in mind) | 09:46 |
| fenn | gene are there places on campus to fly kites? | 09:47 |
| faceface | up? | 09:47 |
| fenn | up and around | 09:47 |
| fenn | up, up and away, in my beautiful, beautiful balloon | 09:55 |
| fenn | (for future reference) lyrics brought to you care of the prodigy: http://www.youtube.com/watch?v=QvmGbkYDWz4 | 10:04 |
| genehacker | no not really | 10:08 |
| genehacker | unless you go to the top of some buildings | 10:09 |
| genehacker | 2.3382 × 1013 joules | 10:10 |
| genehacker | 2.3382 × 10^13 joules per meter | 10:10 |
| genehacker | http://en.wikipedia.org/wiki/Compressed_air_energy_storage | 10:10 |
| genehacker | putting compressed air into bags at 1970 ft below water | 10:11 |
| fenn | per meter what | 10:12 |
| fenn | 1m^3*gravity*1g/cc*1970ft = 5.88MJ | 10:14 |
| genehacker | per meter cubed | 10:17 |
| fenn | sry u r wrong | 10:17 |
| genehacker | your displacing water so you have to take that into account | 10:17 |
| fenn | dude, that's 10 terajoules | 10:18 |
| fenn | that's like a supernova or something | 10:18 |
| fenn | 23 terajoules | 10:18 |
| fenn | heh supernova = 10^46 J | 10:19 |
| genehacker | terajoules what now? | 10:20 |
| fenn | 2.3382 × 10^13 joules = 23.382TJ | 10:20 |
| genehacker | whoa | 10:20 |
| fenn | UNITS | 10:21 |
| genehacker | 6950 megawatt hours per cubic meters is what they said | 10:21 |
| genehacker | 6945 excuseme | 10:23 |
| fenn | again cubic meters of what.. air changes volume as it is compressed | 10:23 |
| genehacker | air | 10:23 |
| fenn | god dammit read what i said | 10:23 |
| genehacker | exactly | 10:23 |
| fenn | is it compressed volume or expanded volume? | 10:23 |
| fenn | not like it fucking matters since the numbers are so totally wrong anyway | 10:23 |
| genehacker | air at 866 psi | 10:24 |
| fenn | whatever dude. do the math yourself if it really matters | 10:25 |
| genehacker | calculate energy it takes to life a column of water 1970ft deep 1 meter in diameter 1 meter | 10:25 |
| fenn | 1 meter in diameter by 1 meter cylinder is not 1 cubic meter | 10:26 |
| fenn | it's 0.785... m^3 | 10:27 |
| genehacker | column is 600 meters high* 1 meter sq diameter*1027 kg/m3 saltwater(of course you're gonna have weird salinity depth changes but I'm not taking that into account) *9.8*1 | 10:29 |
| fenn | gravity*1m*pi*(0.5m)^2*1970ft*1g/cc = 4.62MJ | 10:30 |
| genehacker | =6038760 joules | 10:30 |
| genehacker | huh | 10:30 |
| fenn | you keep changing the numbers around, stop it | 10:30 |
| genehacker | maybe they are? | 10:30 |
| fenn | square diameter.. that's a new one :) | 10:32 |
| genehacker | doesn't matter | 10:32 |
| genehacker | it's in meters squared | 10:32 |
| fenn | why are you suddenly interested in compressed air storage anyway? | 10:33 |
| genehacker | kites might have trouble in storms | 10:34 |
| fenn | certainly | 10:34 |
| genehacker | 23 TJ per cubic meter would be cool | 10:34 |
| fenn | yes but unfortunately those numbers are wrong, remember? | 10:34 |
| genehacker | I guess | 10:34 |
| genehacker | maybe there is some factor I'm not taking into account | 10:35 |
| fenn | you just calculated it yourself and got 6MJ/m^3 | 10:35 |
| genehacker | the bags are cone shaped | 10:36 |
| fenn | "the Mariana Trench is 11033 meters" -> 0.111TJ/m^3 | 10:36 |
| fenn | so it aint gonna happen on earth | 10:37 |
| fenn | and anyway, its not like you can release all that energy instantly | 10:37 |
| fenn | you have to let it rise to the surface in order to expand | 10:37 |
| fenn | or else have some super crush resistant shell | 10:37 |
| fenn | one problem you might not be aware of is that air heats up as it is compressed | 10:39 |
| fenn | so you have to thermally insulate your air tank or else you lose all that energy | 10:39 |
| genehacker | http://en.wordpress.com/tag/seamus-garvey/ | 10:39 |
| genehacker | here's his blog | 10:39 |
| fenn | aw man a professor | 10:40 |
| fenn | ok point me to the numbers | 10:40 |
| genehacker | bags are cone shaped | 10:41 |
| genehacker | 50 meters wide min | 10:41 |
| genehacker | 80 meters wide max | 10:41 |
| genehacker | cone has top cut off | 10:42 |
| fenn | why does robert kyriades have seamus garvey's picture? | 10:42 |
| fenn | +kakaka | 10:42 |
| * fenn grumbles about stupid blogs and lazy engineers and goes to read a nice science fiction book | 10:43 | |
| faceface | A single-molecule method for sequencing DNA that does not require fluorescent labelling could reduce costs and increase sequencing speeds. An exonuclease enzyme might be used to cleave individual nucleotide molecules from the DNA, and when coupled to an appropriate detection system, these nucleotides could be identified in the correct... | 10:49 |
| faceface | http://seqanswers.com/forums/showthread.php?t=1281 | 10:49 |
| genehacker | yup | 11:04 |
| genehacker | wikipedia is wrong | 11:04 |
| genehacker | At a depth of around 600 meters, Professor Garvey calculates that the bags would be able to store 25 megajoules of energy for every meter cubed | 11:05 |
| genehacker | close to the energy density of gasoline | 11:06 |
| genehacker | per liter | 11:06 |
| fenn | there, fixed. | 11:07 |
| fenn | garvey is still off by a factor of 5 | 11:07 |
| genehacker | factor of 5? | 11:08 |
| fenn | factor of 4.25 | 11:08 |
| fenn | 25/5.88 | 11:08 |
| fenn | where do you see that quote | 11:08 |
| genehacker | oh | 11:09 |
| genehacker | I see what they did | 11:09 |
| genehacker | damn those brits | 11:09 |
| fenn | were they using 'british meters'? | 11:10 |
| genehacker | http://www.sustdev.org/index.php?option=com_content&task=view&id=2479&Itemid=35 | 11:10 |
| genehacker | no 6,450 Megawatt hours british | 11:11 |
| genehacker | is really 6.450 megawatt hours american | 11:11 |
| genehacker | comma is decimal in europe | 11:11 |
| genehacker | meme rot | 11:11 |
| fenn | it's still totally bogus | 11:11 |
| genehacker | so what can store energy in terajoules | 11:12 |
| genehacker | per m3 | 11:12 |
| fenn | um, gasoline apparently | 11:12 |
| fenn | 1.3 × 108 J/gallon = 0.03TJ/m^3 | 11:13 |
| fenn | ok not quite | 11:13 |
| genehacker | (1 terajoule) per (cubic meter) = 1 000 000 000 000 pascals | 11:15 |
| genehacker | ??? | 11:15 |
| genehacker | young's modulus of carbon nanotubes 1 terapascal | 11:17 |
| fenn | antimatter, unrealistic superconductors, black hole energy storage, relativistic thingamabobs | 11:18 |
| fenn | fusion, fission, and other non-chemical energy conversion | 11:18 |
| fenn | of course you dont say what shape your 1m^3 volume has to be | 11:19 |
| genehacker | what do you mean by unrealistic superconductors? | 11:19 |
| fenn | i mean realistic superconductors break down after a certain amount of current | 11:19 |
| fenn | metallic hydrogen might do it | 11:20 |
| genehacker | oh really? | 11:20 |
| genehacker | I was thinking the same | 11:20 |
| genehacker | exists at terapascal pressures | 11:20 |
| genehacker | could one even build a container for it? | 11:21 |
| fenn | meta-helium | 11:21 |
| genehacker | hmmm | 11:21 |
| fenn | what about your bolonkin tubes | 11:22 |
| fenn | a cubic meter of tungsten in orbit around earth would have 0.95TJ kinetic energy | 11:24 |
| genehacker | nuclear isomers | 11:24 |
| genehacker | yeah that | 11:24 |
| genehacker | electrons have to be moving fast in order for super conductance to occur | 11:24 |
| fenn | o rly | 11:25 |
| fenn | the idea of metastable helium is this: | 11:35 |
| fenn | Three helium atoms are aligned in a metastable state. | 11:35 |
| fenn | When it reverts to normal state it releases 0.48 giga joules per kilogram. | 11:35 |
| fenn | only problem is that it tends to decay spontaneously, with a lifetime of a mere 2.3 hours. | 11:35 |
| fenn | N20... not nitrous oxide, but Nitrogen-twenty. Basically a buckeyball composed not of carbon but of nitrogen. The story was that the stuff would hold together, and could contain within the buckeysphere other metastable propellents, but if you taunt the Happy Fun Buckeyball, it would explode and provide all kinds of impulse. | 11:37 |
| -!- any07342458 is now known as katsmeow-afk | 14:41 | |
| faceface | you guys scan plos one for interest? | 15:07 |
| -!- duzt|sleep is now known as duzt | 15:13 | |
| wrldpc_ | off to the venter lecture | 15:17 |
| wrldpc_ | i'll report back | 15:17 |
| wrldpc_ | http://www.cfa.harvard.edu/events/2009/crossroads/SCHEDULE_.html | 15:17 |
| kanzure | faceface: http://heybryan.org/books/papers/Rapid%20sequencing%20of%20individual%20DNA%20molecules%20in%20graphene%20nanogaps.pdf | 15:58 |
| kanzure | http://heybryan.org/books/papers/fenn_nanopore_sequencing.png | 15:59 |
| kanzure | http://heybryan.org/books/papers/Cheap%20third-generation%20sequencing%20-%20nanopores%20-%20cyclodextrin%20-%20hemolysin%20-%202009.pdf | 15:59 |
| kanzure | http://heybryan.org/books/papers/Reverse%20DNA%20translocation%20through%20a%20solid-state%20nanopore%20by%20magnetic%20tweezers.pdf | 15:59 |
| faceface | yeah, I knew you had projects or material on this, but that particular paper passed me by | 15:59 |
| fenn | man i never know how to fill out job applications | 16:14 |
| fenn | maybe i should go to goodwill and find some of these mythical LCD monitors to repair | 16:44 |
| kanzure | fenn: what job application are you filling out? | 16:54 |
| fenn | sun harvest, it's a little hippie grocery store close by | 17:00 |
| kanzure | I live right behind sun harvest. | 17:02 |
| kanzure | or, I will be living right behind sun harvest | 17:02 |
| wrldpc | nice | 17:02 |
| kanzure | across the street is harbor freight. don't know how much money I'm going to be wasting there. | 17:03 |
| fenn | i'd recommend not buying anything from harbor freight except perhaps solid lumps of metal | 17:04 |
| fenn | their hammers are great :) | 17:04 |
| fenn | every once in a while you'll get a good tool, but overall it's a net loss | 17:05 |
| wrldpc | lol | 17:27 |
| wrldpc | is it the quality of the tools is lacking? | 17:27 |
| wrldpc | i don't know how you could really buy a bad screwdriver | 17:27 |
| fenn | obviously he's never bought a bad screwdriver before | 17:30 |
| fenn | kanzure: do you want to share a room at the shop? | 17:34 |
| fenn | the fabratory | 17:34 |
| kanzure | probably | 17:38 |
| kanzure | yes, on the condition that we get an internet connection there. | 17:41 |
| -!- any93479388 is now known as katsmeow-afk | 18:17 | |
| -!- duzt|sleep is now known as duzt | 21:28 | |
| kanzure- | go back to sleep | 21:30 |
| kanzure | uh | 22:04 |
| kanzure | does anyone have "Biology Complete" ? | 22:04 |
| xp_prg | http://www.newscientist.com/article/dn8718 | 22:29 |
| kanzure- | http://www.newscientist.com/article/dn16124-solarpowered-sea-slug-harnesses-stolen-plant-genes-.html | 22:33 |
| kanzure- | Solar-powered sea slug harnesses stolen plant genes | 22:33 |
| xp_prg | that is cool! | 22:40 |
| kanzure- | heh, "Targeting gene expression in the wool follicle in transgenic sheep" | 22:46 |
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