🧵 man compares human to chimp (genetics)
Anonymous at Tue, 16 Apr 2024 20:00:26 UTC No. 16132012
a lot of Finnish individuals vs. a chimp
are Finns close to chimpanzee?
turns out it is impossible to find out which human is closer to chimpanzee than some other human because all humans were practically clones of each other in this scope of comparison
altough the tree doesnt make it look like apparent, even the chimpanzee is not extremely distant from humans, but in any case all humans are almost clones
it is mitochondrial DNA, the last human and chimpanzee ancestor lived 5.5 million years ago and was the last woman ever to have mitochondrion that was ancestral to both human and chimpanzee
later on Y-dna might have been swapped between humans and chimpanzees but its impossible to tell from a mitochondrion which is inherited only from mothers
mitochondrion is also the only sensible way to compare a human to a frog, etc.
🗑️ 🧵 Meta-thread: how email verification can fix sci
Anonymous at Tue, 16 Apr 2024 19:00:04 UTC No. 16131926
I know a lot of board users have been upset in recent years by the declining quality of threads on sci and the increase in trolls and conspiracy theorists. Obviously a lot of the other 4chan boards have faced similar problems in the past, and we've always struggled to find solutions to the sorts of problems on 4chan, but there's a new email verification policy that has been really successful on biz and I think it might be worth considering to address some of the similar issues that sci has to deal with. This would involve requiring all posters to register their email before posting.
There are two main reasons for doing something like this:
1. It will help reduce the number of bot posts, since it forces all posters to register an email which makes it more difficult and time consuming for people trying to set up bots, and
2. It provides us with a better means of identifying and tracking where bots and internet trolls are posting from. This can help to combat paid bot farms and hostile foreign governments that have an incentive to manipulate social media content and promote disinformation that serves their interests.
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Anonymous at Tue, 16 Apr 2024 17:16:14 UTC No. 16131818
opinions on Riemann's hypothesis
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Anonymous at Tue, 16 Apr 2024 15:52:54 UTC No. 16131752
What if there is a pretender particle?
Hidden in plain sight running the cosmos
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Saint. Barkon at Tue, 16 Apr 2024 14:42:13 UTC No. 16131652
What if we all farted? Would that be too much of a fart syntax?
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Saint. Barkon at Tue, 16 Apr 2024 14:30:59 UTC No. 16131622
Is 'NPC' rude to NPC's or do they have reigns on this conversation?
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Saint. Barkon at Tue, 16 Apr 2024 13:41:03 UTC No. 16131537
I farted.
What's the science behind this event?
Why do we fart?
🧵 /sqt/ - stupid questions thread (aka /qtddtot/)
Anonymous at Tue, 16 Apr 2024 13:12:34 UTC No. 16131491
Previous thread: >>16109209
>what is /sqt/ for?
Questions regarding maths and science. Also homework.
>where do I go for advice?
>>>/sci/scg or >>>/adv/
>where do I go for other questions and requests?
>>>/wsr/ >>>/g/sqt >>>/diy/sqt etc.
>how do I post math symbols (Latex)?
rentry.org/sci-latex-v1
>a plain google search didn't return anything, is there anything else I should try before asking the question here?
scholar.google.com
>where can I search for proofs?
proofwiki.org
>where can I look up if the question has already been asked here?
warosu.org/sci
eientei.xyz/sci
>how do I optimize an image losslessly?
trimage.org
pnggauntlet.com
>how do I find the source of an image?
images.google.com
tineye.com
saucenao.com
iqdb.org
>where can I get:
>books?
libgen.rs
annas-archive.org
stitz-zeager.com
openstax.org
activecalculus.org
>articles?
sci-hub.st
>book recs?
sites.google.com/site/scienceandmat
4chan-science.fandom.com/wiki//sci/
math.ucr.edu/home/baez/physics/Admi
>online courses and lectures?
khanacademy.org
>charts?
imgur.com/a/pHfMGwE
imgur.com/a/ZZDVNk1
>tables, properties and material selection?
www.engineeringtoolbox.com
www.matweb.com
www.chemspider.com
Tips for asking questions here:
>avoid replying to yourself
>ask anonymously
>recheck the Latex before posting
>ignore shitpost replies
>avoid getting into arguments
>do not tell us where is it you came from
>do not mention how [other place] didn't answer your question so you're reposting it here
>if you need to ask for clarification fifteen times in a row, try to make the sequence easy to read through
>I'm not reading your handwriting
>I'm not flipping that sideways picture
>I'm not google translating your spanish
>don't ask to ask
>don't ask for a hint if you want a solution
>xyproblem.info
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Saint. Barkon at Tue, 16 Apr 2024 12:58:04 UTC No. 16131471
What is the furthest dimension from our own, is it central or abridged?
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Anonymous at Tue, 16 Apr 2024 11:47:32 UTC No. 16131407
Scientists have developed a new solar-powered system to convert saltwater into fresh drinking water which they say could help reduce dangerous the risk of waterborne diseases like cholera.
Via tests in rural communities, they showed that the process is more than 20% cheaper than traditional methods and can be deployed in rural locations around the globe.
Building on existing processes that convert saline groundwater to freshwater, the researchers from King’s College London, in collaboration with MIT and the Helmholtz Institute for Renewable Energy Systems, created a new system that produced consistent levels of water using solar power, and reported it in a paper published recently in Nature Water.
https://www.kcl.ac.uk/news/solar-po
https://www.nature.com/articles/s44
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Anonymous at Tue, 16 Apr 2024 11:23:36 UTC No. 16131373
Intellectual Functioning and Personality Traits
Higher scores on Wechsler scales are generally associated with better intellectual functioning, such as higher IQ scores. While these scales do not directly measure personality traits, there can be indirect correlations between intellectual abilities and certain personality dimensions. For example, individuals with higher intellectual abilities might demonstrate traits like openness to experience, curiosity, and a willingness to explore complex ideas.
Emotional Regulation
There's a connection between cognitive abilities and emotional regulation. People with stronger cognitive skills may be better equipped to understand and regulate their emotions, leading to a more balanced personality. On the other hand, deficits in cognitive functioning, as measured by Wechsler scales, could be associated with difficulties in emotional regulation, potentially leading to symptoms like anxiety or depression.
Psychopathology
While Wechsler scales are not diagnostic tools for psychiatric conditions, certain patterns of cognitive strengths and weaknesses can be associated with different clinical symptoms. For instance, specific cognitive profiles may be linked to conditions such as attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), or specific learning disabilities. These conditions can influence aspects of personality and behavior.
Cognitive Styles
The way individuals process information, solve problems, and approach tasks can also be linked to personality dimensions. For example, someone with a highly analytical cognitive style might exhibit traits like skepticism or a preference for detailed, structured thinking. These cognitive styles can intersect with personality traits and influence how individuals respond to various situations.
🧵 it's 2024 and we still don't know how movement works
Anonymous at Tue, 16 Apr 2024 10:38:57 UTC No. 16131316
"In a race, the quickest runner can never overtake the slowest, since the pursuer must first reach the point whence the pursued started, so that the slower must always hold a lead."
how would you respond without sounding mad
🧵 this worth anything to you guys?
Anonymous at Tue, 16 Apr 2024 10:30:11 UTC No. 16131311
I asked chatgtp to create a new mathematical concept
https://sl.bing.net/jXDiMZCX70K
🧵 insects and humans share some genes
Anonymous at Tue, 16 Apr 2024 09:53:18 UTC No. 16131281
due to sharing an ancestor that lived on the sea 660 million years ago
The degree of overall homology and the conservation of regulatory complexity between vertebrate and insect Hox complexes is simply amazing.
In posterior regions of the embryo, miR-196 is transcribed by promoter elements of paralog 10, processed, and bound to the 3′-untranslated region of Hox-8 mRNAs.
Hox-C8 mRNA and miR-196 have a single mismatch over the 22 nucleotide microRNA sequence, and binding triggers degradation by RNA interference (RNAi). More anterior mRNAs in Hox-7 and Hox-6 paralogous groups also bind to miR-196 but with more mismatches, causing translational inhibition instead of mRNA degradation.
This translational repression mechanism ensures that anterior Hox proteins are not translated posteriorly, explaining earlier observations that some mouse Hox proteins were not expressed in posterior regions of the embryo, whereas their transcripts were expressed all the way to the tip of the tail.
In the Bithorax gene complex of Drosophila, the infra-abdominal 4 (iab-4) gene is found at the equivalent location of miR-196. The iab-4 gene encodes a microRNA that binds to and inhibits Ultrabithorax mRNA translation and is expressed in abdominal segments; when miR-iab4 is overexpressed in the haltere it causes homeotic transformations into a wing.
In the Antennapedia complex a second microRNA, miR-10, has been mapped between Deformed and Sex combs reduced and at homologous positions in the mammalian Hox-B and Hox-D complexes.
Translational repression by microRNAs probably explains the enigmatic phenomenon of “posterior dominance” observed in Hox function.
Such an intricate machinery dedicated to specify identities along the A-P axis would, in all probability, not have evolved in the same way twice.
>For this reason, the inescapable conclusion is that a Hox complex was already functioning in Urbilateria (the ancestor of both human and insect).
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Anonymous at Tue, 16 Apr 2024 08:25:19 UTC No. 16131208
What do you autists know about mass spectrometry engineering as a field?
🗑️ 🧵 Untitled Thread
Anonymous at Tue, 16 Apr 2024 08:17:48 UTC No. 16131202
Why is contemporary medical science so obsessed with murdering people?
Why would anyone in their right mind trust their health to a profession that is determined to commit as much murder as it can possibly get away with?
🧵 Insanity and Mathematics
Anonymous at Tue, 16 Apr 2024 07:24:43 UTC No. 16131161
Serious question, why is insanity or madness so common among mathematicians?
Assuming the genius mind is merely a thing that exists, then why is it in mathematics where is becomes most vulnerable to insanity?
I think of the movie [math]\pi[/math]. Like somehow knowledge becomes dangerous not just externally but internally.
The schizos on /sci/ are all obsessed with math.
I was once seduced by mathematics and it terrified me to the bone. It was not something for the sane minded, I knew that well and so I abandoned it so that I might remain somewhat bliss. Yet, I am still scarred by it. It haunts me ever, as if it were a curse.
It allures you with beauty, but when you traverse beyond the pale you are meet with a black ocean. I stood there and turned away.
So I stayed in finance, pretending none of it happened, like everything was normal.
If God is anywhere he is within the vast of that stygian ocean where no man belongs.
Am I a coward for being a afraid of mathematics? I don't want to become shattered like even the greatest mathematicians. I am made humble.
Even if it's just the insane drawn towards it (which it cannot be uniquely) then why?
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Anonymous at Tue, 16 Apr 2024 03:08:43 UTC No. 16131010
How long of a stretch of water hose would I need in order to have it in the sun and have continuous hot water?
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Anonymous at Tue, 16 Apr 2024 02:43:09 UTC No. 16130987
Was she bought? Why is she doing all this DEI/ESG science propaganda now.
🧵 NEW POLYNOMIAL COMPOSITION ALGORITHM
Anonymous at Tue, 16 Apr 2024 00:44:53 UTC No. 16130873
Apparently a couple of days ago some very smart asians (I believe japanese and chinese) wrote a paper on power series composition which runs in [math]O(n\log^2 n)[/math] outperforming (supposedly even in practice) the current ones by a lot.
I wouldn't believe that you can get composition so fast (and in fact I need to go over the paper to be 100% sure).
Do you believe this will be the endgame of new and efficient power series algorithms?
🧵 Reminder that we will never travel faster than light.
Anonymous at Mon, 15 Apr 2024 23:56:51 UTC No. 16130818
>Alcubierre Drive bro!
The idea that a ship could bend spacetime around it in order to move through said spacetime seems to me to be analagous to trying to lift a chair while you are sitting on it. But lets say that a warp bubble is produced independantly of the ship, and then sent on a pre-determined path with the ship inside. Even this seems impossible, because once again it involves manipulating a substance that are are innately a part of. How exactly can a three dimensional creature that cannot willingly control it's time dimension hope to manipulate spacetime in this way? It's like a 2D creature trying to manipulate 3D space.
But lets say it is possible. Clearly we can manipulate spacetime in some way. Get enough energy together and you can create gravity, which is just the warping of spacetime, but so far as we know, gravity propagates at a max speed just below the speed of light. So a warp drive based on bending space like this would not feasibly end up accelerating to FTL speeds anyway.
Literally the only FTL phenomena that people can point to is the expansion of the universe itself. This is the fundamental difference between simply bending spacetime as gravity does (or is) and the actual expansion and contraction of space itself. It is likely the latter is never going to be possible because of what I said earlier, that we are beings who can not manipulate spacetime in such a way. We are three dimensional with no control over our time dimension. We are sitting on the chair we are trying to lift.
🧵 proofs for the pythagorean theorem
Anonymous at Mon, 15 Apr 2024 23:30:36 UTC No. 16130801
that's the only proof i could come up with on my own , i'm a high school student so excuse me if i sound stupid , i'm trying to prove it using calculus but i got stuck
🧵 Moving cities for health\ longevity
Anonymous at Mon, 15 Apr 2024 22:51:25 UTC No. 16130786
I need medical-grade advice here on achieving the maximum possible longevity\ anti-aging lifestyle benefits and stats. How do I pick a city that's the best in terms of : Air quality, water quality, lack of pollution (noise pollution mainly, but also everything else) , access to truly healthy foods, no contamination on the soil, etc?
Im even willing to move to another Country. Also, inside my own house : Should I buy some sort of electric air-cleaners, protection from atmospheric or air-bond hazards, strong filters for shower and tap water, etc?
>Is it retarded to do stuff like regular Hyperbaric Chamber visits, sleeping on an electric mat, etc?