DB's absolutely amazing sci/tech thread

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the innominate one
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Re: DB's absolutely amazing sci/tech thread

Post by the innominate one » 21 Nov 2017, 18:37

Very interesting, and there has previously been some discussion a few years ago about differences in model animals' reaction by the sex of the researchers. I wonder if the animals used in this experiment you linked were all-male, as is typical for research, and if the reaction to researcher sex is consistent or opposite between the sexes of the specimens.

Isn't this thus likely another case where mouse models don't apply to humans?
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau » 21 Nov 2017, 18:51

Let's talk about what REALLY matters: How can we fit this into American academia's fucked up "conversations" about gender and STEM?
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thoreau
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau » 21 Nov 2017, 18:54

More seriously, I wonder what other odors are affecting the results of mouse experiments. Does the lunch that the grad student ate before handling the mouse matter for certain experiments? What if the postdoc has a cat at home? What if the grad student is wearing perfume? Or a scented deodorant? The list could go on. There might be all sorts of sources of noise that we're not even aware of, experiments explained by the fact that the postdoc who handled the mice was taking care of a baby who threw up a lot.
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the innominate one
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Re: DB's absolutely amazing sci/tech thread

Post by the innominate one » 21 Nov 2017, 19:12

Good points. Maybe live animal specimens should consistently be handled in glove boxes, at a minimum.
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Re: DB's absolutely amazing sci/tech thread

Post by dbcooper » 02 Dec 2017, 20:24

Looking to cure Type 1 diabetes, investors front $114M to launch a pioneering human study at Semma
Three years ago, Harvard’s Doug Melton published a landmark study outlining how he had successfully used stem cells to create insulin-producing pancreatic beta cells that were inserted in bulk into mice and successfully protected from an immune response — a breakthrough in regenerative medicine that bore real promise to provide a curative approach for Type 1 diabetes that could conceivably end a lifetime of insulin shots.

It was the culmination of 23 years of lab work, launched when his son was diagnosed with Type 1 diabetes. And that achievement marked the beginning of something new in biotech.
26 years and counting of work ...
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JD
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 11 Dec 2017, 15:16

NASA and Google have some big announcement to make on Thursday, but they're being all coy about exactly what it is: http://www.popularmechanics.com/space/t ... -thursday/
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Re: DB's absolutely amazing sci/tech thread

Post by Kolohe » 11 Dec 2017, 16:28

JD wrote:
11 Dec 2017, 15:16
NASA and Google have some big announcement to make on Thursday, but they're being all coy about exactly what it is: http://www.popularmechanics.com/space/t ... -thursday/
Image
It's probably not aliens.
Image
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Re: DB's absolutely amazing sci/tech thread

Post by Aresen » 26 Jul 2018, 14:11

General Relativity passes another test
For more than 20 years, a team of astronomers has tracked a single star whipping around the supermassive black hole at the center of our galaxy at up to 25 million kilometers per hour, or 3% of the speed of light. Now, the team says the close encounter has put Albert Einstein’s theory of gravity to its most rigorous test yet for massive objects, with the light from the star stretched in a way not prescribed by Newtonian gravity. In a study announced today, the team says it has detected a distinctive indicator of Einstein’s general theory of relativity called “gravitational redshift,” in which the star’s light loses energy because of the black hole’s intense gravity.
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 27 Jul 2018, 14:49

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Re: DB's absolutely amazing sci/tech thread

Post by Eric the .5b » 27 Jul 2018, 18:43

That took me a second. :)

Now, I want to do some kind of story where manned interstellar travel is a bust, as FTL doesn't exist, hibernation isn't feasible for mammals, and generation ships all turn into North Korea without the foreign aid. Except, we find out that there are interstellar travelers—they're just all aliens evolved from nematodes, tardigrades, or other things that can be safely frozen or dehydrated for journeys.
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 21 Aug 2018, 14:29

This could potentially be quite significant:
Scientists believe they have found a reliable way to transform donor blood into the universal type needed for safe, emergency blood transfusions.

The discovery is enzymes from gut bacteria that can efficiently turn type-A human blood into type-O.
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau » 07 Sep 2018, 14:26

This is pretty cool: Lenses for concentrating water waves, to improve harvesting of offshore wave energy.

https://physics.aps.org/articles/v11/89
"ike Wile E. Coyote salivating over a "4000 Ways To Prepare Roadrunner" cookbook without watching his surroundings, the Road Runner of Societal Inertia snuck up on them both and beepbeeped them off the mesa."
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JD
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 07 Sep 2018, 14:51

thoreau wrote:
07 Sep 2018, 14:26
This is pretty cool: Lenses for concentrating water waves, to improve harvesting of offshore wave energy.

https://physics.aps.org/articles/v11/89
That is really cool. I think that ocean power generation is a field with a lot of potential, and it's good to see attention being paid to it.
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JD
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 14 Sep 2018, 12:47

The Northern mole vole, Ellobius talpinus, has X and Y chromosomes, and the chromosomes determine sex, as in humans. But its relative the Transcaucasian mole vole, E. lutescens, has no Y chromosome at all, and both sexes have XO chromosomes. And in the Zaisan mole vole, E. tancrei, both sexes have XX chromosomes. The Ryuku spiny rat and Tokunoshima spiny rat also have no Y chromosome anymore. Study of their genetics is ongoing: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5704219/
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau » 14 Sep 2018, 13:42

SCIENCE!!!!!111! PROVES THAT MALE AND FEMALE ARE CULTURAL CONSTRUCTS!!!!1!!!1!!11!
"ike Wile E. Coyote salivating over a "4000 Ways To Prepare Roadrunner" cookbook without watching his surroundings, the Road Runner of Societal Inertia snuck up on them both and beepbeeped them off the mesa."
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Re: DB's absolutely amazing sci/tech thread

Post by JD » 20 Sep 2018, 14:52

MDMA appears to affect octopuses similarly to how it affects humans. This is pretty amazing considering that they're not even in the same phylum as humans, we last shared a common ancestor about 800 million years ago (they are no more closely related to us than an earthworm or a butterfly is), and their brains are organized very differently from ours.
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Re: DB's absolutely amazing sci/tech thread

Post by Aresen » 20 Sep 2018, 16:10

TESS has discovered its first exoplanet, only days into its mission:

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Re: DB's absolutely amazing sci/tech thread

Post by JD » 28 Sep 2018, 16:03

A new invention could filter heavy metals out of water quickly and cheaply. It uses gallium to create porous sheets of aluminum oxide, which has a high affinity for heavy metals but allows water molecules to pass through. Aluminum is very cheap, and while gallium is rather more expensive, the cool thing is that it actually doesn't get used up in the process, so the overall cost should still be low.
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thoreau
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau » 28 Sep 2018, 16:07

Pores in aluminum? Do I need to tell you what the fuck you can do with an aluminum tube?

ALUMINUM!!!!
"ike Wile E. Coyote salivating over a "4000 Ways To Prepare Roadrunner" cookbook without watching his surroundings, the Road Runner of Societal Inertia snuck up on them both and beepbeeped them off the mesa."
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