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| kanzure | fenn: an oxygen generator | 06:07 |
|---|---|---|
| kanzure | so, how does it work? | 06:07 |
| kanzure | you don't mean a tank? | 06:07 |
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| kanzure | blah, I don't think I should be sitting around doing nothing | 09:24 |
| kanzure | although I suspect that this is an understatement | 09:25 |
| kanzure | it's pretty nice being able to bookmark stuff in under a second | 09:25 |
| kanzure | http://heybryan.org/shots/2008-07-02.png | 09:26 |
| kanzure | http://www.sciencedirect.com.ezproxy.lib.utexas.edu/science?_ob=ArticleURL&_udi=B6SYV-407GKGG-B&_user=108429&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000059713&_version=1&_urlVersion=0&_userid=108429&md5=76224196978ef67b4985546db4aef99d "... reflecting a reduction of attentional effort" (due to increases in cortical acetylcholine) | 10:18 |
| kanzure | "Furthermore, the effects of the distracter stimulus provide evidence for a direct relationship between attentional effort and cortical ACh release." | 10:19 |
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| kanzure | Hey jm|earth. | 13:36 |
| fenn | an oxygen generator pumps air into a zeolite-filled tank, causing nitrogen to dissolve into the zeolite, then bleeds off the air in the cylinder which regenerates the zeolite | 13:38 |
| fenn | its low pressure, like 20 psi | 13:39 |
| jm|earth | hi. can't talk much atm. | 13:43 |
| kanzure | http://network.nature.com/boston/news/Q&A/2008/07/01/backyard-biology | 14:02 |
| kanzure | So theoretically | 14:02 |
| kanzure | if we get 30 people to show up for our stuff | 14:02 |
| kanzure | we should get into Nature? | 14:02 |
| kanzure | why don't they mention the projects in the community | 14:04 |
| kanzure | like the biotank/bioreactor | 14:04 |
| kanzure | it's not like it doesn't exist | 14:04 |
| kanzure | and it's been mentioned extensively on the mailing list | 14:04 |
| kanzure | what the hell? | 14:04 |
| kanzure | > Part of the reason I ask is this: | 14:08 |
| kanzure | > | 14:08 |
| kanzure | > "Really, for digital logic, all we need is a relay (switch). But the | 14:08 |
| kanzure | > problem is that if you have 20 relays connected in sequence, you get | 14:08 |
| kanzure | > voltage drop-off eventually (obviously) and the circuit just fails | 14:08 |
| kanzure | > completely." | 14:09 |
| kanzure | > | 14:09 |
| kanzure | > Relays have problems, particularly they are slow, but this | 14:09 |
| kanzure | > demonstrates a complete misunderstanding of how you hook up a | 14:09 |
| kanzure | > relay. If you have one relay switching the power for the next one, | 14:09 |
| kanzure | > you can put 20 (or any number) in logical sequence and the final one | 14:09 |
| kanzure | > closes just as solidly as the first. | 14:09 |
| kanzure | fenn: what do you think? | 14:09 |
| fenn | doesnt know what 'digital' means | 14:10 |
| fenn | the whole point is to regenerate the signal at each step to keep it over a threshold level | 14:11 |
| kanzure | are we sure | 14:11 |
| kanzure | I mean, that still makes sense to me | 14:11 |
| kanzure | but it's Keith Henson | 14:11 |
| kanzure | and he might know what he's talking about | 14:11 |
| kanzure | "really, for digital logic" was me | 14:12 |
| kanzure | sometime in 2007 | 14:12 |
| fenn | hm, i guess relays do use the main power bus, there's no build up of resistance | 14:13 |
| ybit | so bryan, what'd conclusions did you draw from "Equipment acquisition for homebrewers"? | 14:39 |
| kanzure | ybit: lemme find/upload a file | 14:41 |
| kanzure | http://heybryan.org/docs/2008-06-29_finding_stuff.txt | 14:42 |
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| wrldpc2 | Ahoy the bridge. | 16:34 |
| wrldpc2 | yo | 16:35 |
| kanzure | yarr | 16:47 |
| wrldpc2 | yo | 16:50 |
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| wrldpc2 | i ordered the golden helix today | 17:11 |
| wrldpc2 | i'd never heard of this author before | 17:11 |
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| kanzure | So, was I supposed to double check if the PSU fits in the case before I ordered? | 22:41 |
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