Mo's moderately interesting sci/tech thread

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Warren
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Re: Mo's moderately interesting sci/tech thread

Post by Warren » 15 Nov 2019, 14:09

Hugh Akston wrote:
15 Nov 2019, 14:03
thoreau wrote:
15 Nov 2019, 13:51
Biodegrading in 4-6 weeks? Seems a little short for a lot of applications.
If it's food-safe then that's a perfect timeframe for a lot of packaging. Likewise plastic straws and other high-volume single uses. It's not going to solve all the problems, but it will solve a lot of them.
I RTFA my understanding is it doesn't degrade until you compost it.
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Re: Mo's moderately interesting sci/tech thread

Post by Hugh Akston » 15 Nov 2019, 14:48

Warren wrote:
15 Nov 2019, 14:09
Hugh Akston wrote:
15 Nov 2019, 14:03
thoreau wrote:
15 Nov 2019, 13:51
Biodegrading in 4-6 weeks? Seems a little short for a lot of applications.
If it's food-safe then that's a perfect timeframe for a lot of packaging. Likewise plastic straws and other high-volume single uses. It's not going to solve all the problems, but it will solve a lot of them.
I RTFA my understanding is it doesn't degrade until you compost it.
That was my read too, which is even better.
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Re: Mo's moderately interesting sci/tech thread

Post by Aresen » 15 Nov 2019, 16:04

Warren wrote:
15 Nov 2019, 14:09
Hugh Akston wrote:
15 Nov 2019, 14:03
thoreau wrote:
15 Nov 2019, 13:51
Biodegrading in 4-6 weeks? Seems a little short for a lot of applications.
If it's food-safe then that's a perfect timeframe for a lot of packaging. Likewise plastic straws and other high-volume single uses. It's not going to solve all the problems, but it will solve a lot of them.
I RTFA my understanding is it doesn't degrade until you compost it.
Does 'composting' = 'somewhere way in the back of my fridge'?
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Re: Mo's moderately interesting sci/tech thread

Post by thoreau » 15 Nov 2019, 16:16

OK, if it only degrades in 4-6 weeks under specific conditions, and otherwise is stable, I think this is an amazing invention.
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Re: Mo's moderately interesting sci/tech thread

Post by Warren » 15 Nov 2019, 16:24

MarinaTex is unique for multiple reasons. Compared to its main competitor plastic, MarinaTex can fully biodegrade in home food recycling bins or home composts without leaching toxic chemicals into the environment. Another competitor is PLA bioplastics. These bioplastics can only be composted in specialised industrial facilities and have been contaminating mainstream facilities resulting in compostable waste being sent to landfill. MarinaTex will not contaminate these facilities due to different chemical structure.
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Re: Mo's moderately interesting sci/tech thread

Post by Hugh Akston » 15 Nov 2019, 16:27

No wait it's the opposite:
It biodegrades on its own in four to six weeks, which gives it a major sustainability advantage over traditional bioplastics, most of which require industrial composters to break down.
But with the volume of plastic lids and straws that the fast food industry goes through, 4-6 weeks is plenty of time.
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Re: Mo's moderately interesting sci/tech thread

Post by Eric the .5b » 15 Nov 2019, 19:13

thoreau wrote:
15 Nov 2019, 16:16
OK, if it only degrades in 4-6 weeks under specific conditions, and otherwise is stable, I think this is an amazing invention.
And if it can actually be manufactured at scale at competitive prices, etc. But it is cool.
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Re: Mo's moderately interesting sci/tech thread

Post by Warren » 15 Nov 2019, 19:38

Hugh Akston wrote:
15 Nov 2019, 16:27
No wait it's the opposite:
It biodegrades on its own in four to six weeks, which gives it a major sustainability advantage over traditional bioplastics, most of which require industrial composters to break down.
But with the volume of plastic lids and straws that the fast food industry goes through, 4-6 weeks is plenty of time.
I don't know that it can be made ridged for those applications. It looks too pliable.
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Re: Mo's moderately interesting sci/tech thread

Post by dbcooper » 19 Nov 2019, 20:08

Slip inside a sleeping bag.

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Re: Mo's moderately interesting sci/tech thread

Post by JasonL » 19 Nov 2019, 20:12

dbcooper wrote:How to recognize AI snake oil:

https://www.cs.princeton.edu/~arvindn/t ... akeoil.pdf
That’s really cool thanks!

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Re: Mo's moderately interesting sci/tech thread

Post by JasonL » 19 Nov 2019, 20:16

And, I’ve said this for years, but the reason HR is gullible is because they in most roles across the public sphere can’t predict success through any mechanism other than “has already succeeded at this role”. They still use educational signals because they are something. They have success stories from all walks of life but can’t tell who is who prospectively.

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Re: Mo's moderately interesting sci/tech thread

Post by Jasper » 20 Nov 2019, 08:58

Re: biodegradabiity - yes, the term in industry-speak means hitting certain targets in standardized tests. You basically take the material, mix it with bioactive sludge (basically composting) and then measure the CO2 given off by the microbes as they eat the material, and convert the readings into a "percent biodegradable" over standard time frames. 28 and 56 days are standard 'check points' during the test.

Newer 16-section SDS will sometimes have biodegradability data in the environmental impact section, and will say something like '83% at 28 days'.

This is a very interesting discovery, which hits close to some of the work I've been doing lately.
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Re: Mo's moderately interesting sci/tech thread

Post by JD » 05 Dec 2019, 13:36

Biologist manages to reproduce results that had been published in a paper 100 years ago and subsequently dismissed, showing that even single-celled organisms display more complex behavior than usually thought: https://www.the-scientist.com/news-opin ... ions-66818
I sort of feel like a sucker about aspiring to be intellectually rigorous when I could just go on twitter and say capitalism causes space herpes and no one will challenge me on it. - Hugh Akston

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Re: Mo's moderately interesting sci/tech thread

Post by thoreau » 08 Dec 2019, 12:03

Bone marrow transplant recipients have DNA from their donors and it matters in criminal investigations.

https://www.nytimes.com/2019/12/07/us/d ... ur2qSHTd0V
"They were basically like D&D min maxers, but instead of pissing off their DM, they destroyed the global economy. Also, instead of their DM making a level 7 paladin fight a beholder as punishment, he got a +3 sword of turning."
--Mo

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Re: Mo's moderately interesting sci/tech thread

Post by Aresen » 08 Dec 2019, 16:48

thoreau wrote:
08 Dec 2019, 12:03
Bone marrow transplant recipients have DNA from their donors and it matters in criminal investigations.

https://www.nytimes.com/2019/12/07/us/d ... ur2qSHTd0V
The really curious part is the DNA in his semen.
If Trump supporters wanted a tough guy, why did they elect such a whiny bitch? - Mo

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Re: Mo's moderately interesting sci/tech thread

Post by JD » 10 Dec 2019, 15:17

Researchers test children's ability to communicate concepts without speech, using improvised sign language, and discover that purely symbolic communication and grammar both occur very naturally even to small children.
https://arstechnica.com/science/2019/12 ... -language/
I sort of feel like a sucker about aspiring to be intellectually rigorous when I could just go on twitter and say capitalism causes space herpes and no one will challenge me on it. - Hugh Akston

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Re: Mo's moderately interesting sci/tech thread

Post by JasonL » 10 Dec 2019, 15:25

No blank slate yo

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Re: Mo's moderately interesting sci/tech thread

Post by Aresen » 10 Dec 2019, 21:16

JD wrote:
10 Dec 2019, 15:17
Researchers test children's ability to communicate concepts without speech, using improvised sign language, and discover that purely symbolic communication and grammar both occur very naturally even to small children.
https://arstechnica.com/science/2019/12 ... -language/
Their first clue was the extended middle finger one infant gave them when they didn't change her diaper.
If Trump supporters wanted a tough guy, why did they elect such a whiny bitch? - Mo

Those who know history are doomed to deja vu. - the innominate one

Never bring a knife to a joke fight" - dhex

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