English
Lemhaar
552 posts
Lemhaar
@lemhaar
For someone who doesn’t believe in magic, the whole world seems like physics. Timespender.
Katılım Mart 2019
33 Takip Edilen16 Takipçiler
@leecronin @patriciacraja Creativity is exploration (construction and stochastic search), experimentation (implementation and observation) and continuous learning (integration and self improvement)
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When we understand creativity we will understand intelligence.
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@RaminNasibov Desire.
The concept of "want".
He has no creative impulse or goals beyond the given mathematical functions.
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@tarou_ymd_ It's amazing how nature hedged her bets.
The body adapts its offspring to the environment literally on the fly, using RNA as a RAM.
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精子は、父親の遺伝子を卵子に運ぶだけじゃなくて、途中でmRNAも拾ってそれが胚、つまり受精卵に受け渡されることがマウスでわかったらしい。精子が小さなRNA断片を介して、父親の食事・ストレス・運動の影響を子に伝えることは報告されてましたが、こういう経路もあるんですね。
News from Science@NewsfromScience
Sperm have long been thought of as streamlined DNA delivery vehicles, carrying little more than a father’s genes to the egg. But a new study shows that in mice, sperm may transmit the father’s influence in another way. During their passage through the epididymis, the coiled tube where they mature after leaving the testes, sperm pick up messenger RNAs (mRNAs), RNA transcripts of genes that contain the genetic instructions for making proteins. These mRNAs seem to be transferred to the fertilized egg, where they may affect the developing embryo. Learn more: scim.ag/41Qq7ir
日本語
❌Traditional view:
Only the "blueprint" (DNA) is inherited.
✅New view:
Along the way, the sperm "packs up" additional instructions (RNA), which can change how this blueprint is read in the embryo.
やまだ@研究者@tarou_ymd_
精子は、父親の遺伝子を卵子に運ぶだけじゃなくて、途中でmRNAも拾ってそれが胚、つまり受精卵に受け渡されることがマウスでわかったらしい。精子が小さなRNA断片を介して、父親の食事・ストレス・運動の影響を子に伝えることは報告されてましたが、こういう経路もあるんですね。
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@SpencerKlavan Writing is writing.
Writing CAUSES thinking.
Thinking creates imagination.
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Writing is thinking, exhibit one million. I tell students: you don’t have ideas you “just need to put into words.” You have vague subterranean inklings, and putting them into words is how you turn them into ideas. If you let AI do it, your own thoughts remain a squishy paste.
Tricia Dearborn@TriciaDearborn
If you're thinking about using gen-AI to "write" books, this 🧵 is for you. I’m a highly experienced editor who’s been in the biz a long time. Recently I’ve had manuscripts come to me where the author has used gen-AI – not for writing, I’ve been assured, but for
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@tarou_ymd_ Notably, KAT expression is higher in oxidative muscle fibers (type I and IIa) and correlates with mitochondrial density, suggesting a preference for prolonged, moderate-intensity aerobic exercise.
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運動が老化に効く理由は、筋肉が増えるからだけではないかも？
トリプトファンは、体内でキヌレニン、セロトニン、インドールなどに変換されます。炎症やストレスではキヌレニン経路が乱れ、脳・筋肉・免疫の老化と関わります。
運動はこの流れを調整し、筋肉でキヌレニンをより安全な代謝物へ変えることで、脳や全身の炎症環境を守る可能性があります。
つまり運動はカロリー消費ではなく、老化に関わる代謝の交通整理でもある、という話ですね。
sciencedirect.com/science/articl…
日本語
Yes, but the location of the walk matters.
The sea is unsuitable for insights and "spark thoughts" - it pulls the psyche into default-mode relaxation and contemplation rather than an active, analytical state.
Ramin Nasibov@RaminNasibov
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Neurons:
- "Let me through, I need to get to my prefrontal cortex urgently..."
- "Hey, don't push ahead, my impulse takes priority!"
- "Hey, hey, where are you going guys?! I was first in line for the synapse, what's going on?"
Astrocyte:
Trends in Neurosciences@TrendsNeuro
'Head direction and the evolutionary origins of spatial representation' by Marcel Sayre, Ajay Narendra, Stanley Heinze & Andrew Barron cell.com/trends/neurosc…
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So the definition of life is:
"a non-equilibrium dissipative autocatalytic system that maintains self-reproducing organization through an external energy flux and is capable of replication with heritable variation enabling Darwinian evolution."
@NASA
@QuantaMagazine
Quanta Magazine@QuantaMagazine
Biologists have been unpacking the mystery of the flagellar motor for decades. It wasn’t until this year that the final pieces of its dynamic puzzle finally fell into place. “My lifelong quest is now fulfilled,” said Mike Manson, a professor emeritus of biophysics at Texas A&M University who started studying the flagellar motor in the 1970s. “I finally understand how this thing I’ve been studying for 50 years actually works. That’s about as satisfying as can be.” quantamagazine.org/what-physical-…
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