--- Log opened Sat Jun 26 00:00:48 2021
01:01 < maaku> kanzure: the weird anime movie? yes
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05:44 < fenn> https://tickrepellent.net/why-are-there-more-ticks/#:~:text=Climate%20Change%20and%20Ticks
05:46 < L29Ah> because hummies don't kill their natural hosts
05:46 < fenn> deer and mice?
05:47 < L29Ah> deer, yes; ok, didn't know mice are also affected, as they're quite agile and sensitive
05:47 < fenn> seems like their natural hosts are just about everything
05:48 < L29Ah> everything big used to be human food
05:48 < fenn> bring back the wolf
05:48 < L29Ah> and now you can't just shoot a deer you see in a forest
07:04 < fenn> http://newatlas.com/tick-rover-robot/28410/
07:10 < L29Ah> CO2 huh
07:10 < L29Ah> i wonder if they tried to warm up the cloth
07:11 < fenn> seems better to put some dry ice on the rover than dragging tubes everywhere
07:13 < fenn> finally a use for RC cars :D
07:16 < fenn> i wonder why there aren't chewable tick repellents for humans
07:18 < fenn> "because we bathe more regularly than dogs do"
07:26 < L29Ah> chewable? do you mean edible?
07:26 < fenn> yeah. the bathing thing was about once a month application
07:27 < L29Ah> i'm pissed that the best insect repellent substance on the market that is suitable for topical use on humans dissolves spandex
07:28 < fenn> how about picaridin. supposedly it lasts 12 hours vs 2-5 for DEET (against ticks)
07:29 < fenn> it seems repellents are divided into "things applied to skin" and "things applied to clothing and gear"
07:29 < L29Ah> i'm yet to find a formulation of picaridin that doesn't contain DEET, but it's probably okay
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12:16 < kanzure> "Epigenetic clocks reveal a rejuvenation event during embryogenesis followed by aging" https://advances.sciencemag.org/content/7/26/eabg6082
12:16 < kanzure> "The notion that the germ line does not age goes back to the 19th-century ideas of August Weismann. However, being metabolically active, the germ line accumulates damage and other changes over time, i.e., it ages. For new life to begin in the same young state, the germ line must be rejuvenated in the offspring. Here, we developed a multi-tissue epigenetic clock and applied it, together with ...
12:16 < kanzure> ...other aging clocks, to track changes in biological age during mouse and human prenatal development. This analysis revealed a significant decrease in biological age, i.e., rejuvenation, during early stages of embryogenesis, followed by an increase in later stages. We further found that pluripotent stem cells do not age even after extensive passaging and that the examined epigenetic age dynamics ...
12:16 < kanzure> ...is conserved across species. Overall, this study uncovers a natural rejuvenation event during embryogenesis and suggests that the minimal biological age (ground zero) marks the beginning of organismal aging."
12:19 < fenn> "pluripotent stem cells do not age" sounds highly convenient
12:21 < fenn> guh stupid websites these days.
12:22 < fenn> https://advances.sciencemag.org/content/advances/7/26/eabg6082.full.pdf ^above paper in pdf form
12:47 < L29Ah> so can we just say that cell division and growth brings rejuvenation?
12:47 < L29Ah> just by dilution of garbage in newly produced pristine stuff
12:50 < L29Ah> alright, nvm, read into the actual paper, and it seems like i should read into the markers they used
12:59 < fenn> i think epigenetics is only half the story
12:59 < fenn> if you learn anything interesting from the paper, please share
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20:30 < lsneff> What's the current state-of-the-art in artificial muscle?
20:35 < mrdata> shape memory alloy (muscle wire) isnt so terrible but i am not sure 
20:54 < fenn> ray baughmann coiled monofilament is pretty good
20:54 < fenn> electrostatic carbon fiber actuators are ludicrous power to weight ratio but require high voltages
20:56 < fenn> i have a fondness for mckibben actuators (festo fluidic muscle, a rubber tube in a braided cable sleeve, and so on)
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22:29 < mrdata> neat
22:41 < fenn> for the lazy http://en.wikipedia.org/wiki/Pneumatic_artificial_muscles
--- Log closed Sun Jun 27 00:00:49 2021