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Omarion Miller made this left-handed one-handed catch through contact look WAY too easy 😳 It’s safe to say the No. 2 WR from the transfer portal from Colorado has been lighting up ASU’s first two spring practices. SunDevilSource.com

139,790 просмотров • 5 месяцев назад •via X (Twitter)

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Most chiral molecules arise from carbons being bonded to 4 different atoms, which are called sterocenters. The makes the molecule have a different mirror image that cannot arise from simple rotation. But, you can have chiral molecules not from stereocenters. You can have chirality that doesn't come from a single point in the molecule. It comes from some global property. The classic example is helicene, which doesn't have any stereocenters, but has chirality because of hits helical structure. This means you cannot capture this molecule with a graph, and thus SMILES or a string representation cannot capture this. Of course natural language comes to the rescue (just say in words if it's left-handed or right-handed helix), but it's an interesting failure mode for viewing molecules as just a graph. Another example of a molecule with helical chirality is DNA. DNA is actually chiral in two ways, which is kind of confusing. It has both helical structure and stereocenters. You won't find the stereocenters ever flipped, but left-handed helical DNA can exist (called Z-DNA). Interestingly, making the flipped stereocenter of DNA could be part of an entire mirror organism (mirror RNA, DNA, AAs, sugars) that would then be potentially invisible to our immune systems. This has been recently proposed as a "mechanism" for how a runaway AI system could cause harm to Earth. I find it to be a pretty tedious and difficult way to cause harm, but it is intellectually cool. Anyway - this came up in a PhD defense and I have a lot of arcane knowledge about this I wanted to dump.

Andrew White 🐦‍⬛

15,039 просмотров • 5 месяцев назад

As tensions escalate in Bangladesh, Gaushala broken into in Tripura, 10 gauvansh rescued from the Indo-Bangladesh border stolen from Dhyan Foundation's Debipur Gaushala As tensions escalate in #Bangladesh whose international border is merely 2 kms away, 2100 gauvansh rescued by #BSF jawans from the border rehabbed in Gaushalas in the region, face increased threats to their lives and property from Bangladeshi mafia and their local goons in the inhospitable regions of #Tripura... But permissions to shift them to Dhyan's safer, well-equipped Gaushala in #Jharkhand have been held up by senior officials for months. Not just that, even funds sanctioned by the गृहमंत्री कार्यालय, HMO India itself to move the gauvansh to safer territory have been held up! This is despite repeated attacks and thefts on the Gaushalas and due intimation to BSF IG Tripura on the same, time & again. We fear some officials are involved in this, otherwise why will permissions to shift them to safer territory be held up? Instead, rescued gauvansh are handed over to fake Gaushalas, which openly admit to disposing of them. ...Now where are the cattle which were handed over to the fake Gaushalas? There have been continuous efforts to force this organization Dhyan Foundation to backstep so smuggling can continue, with holding up of permissions being yet another attempt. However, this time it has put 2100 innocent gauvansh's lives at open risk of attack from Bangladeshi mafia goons. CMO Tripura | Sepahijala District Police

Gau Gyan Foundation

31,256 просмотров • 2 лет назад