nicholsz
nicholsz t1_j8td4oa wrote
Reply to Is blood toxic to neurons ? by AdEnvironmental8339
Yes, blood is toxic to neurons. We have a blood-brain barrier that only lets some things through (either passively if they're small enough like oxygen or alcohol, or actively for bigger molecules).
The brain sits in cerebrospinal fluid (CSF) rather than blood.
As for the actual mechanisms that blood will damage the brain -- first, if you've got a brain bleed, it'll increase intracranial pressure and make it harder for new oxygenated blood to get in, which will kill your neurons from simply lack of oxygen. Second, even a small bleed will kill neurons, because things like the sodium concentration in your CSF will get messed up, and then when the blood dies in your brain it'll leave behind a bunch of iron from hemoglobin which will also kill your neurons.
nicholsz t1_j7s8m75 wrote
Reply to What's your estimation for the minimum size of global population required for preserving modern civilization with advanced technology and medicine, and even progressing further? by Evgeneey
I think it depends on the framing. Do we pick certain people to keep, or is it random? Do they all just disappear and get Raptured one day, or do we have some time to prep?
I'd guess that we could probably get by with a few million without a massive drop in quality of life, but that's if we had time to prepare. Wiping out 99.99% of the human population all at once would not result in a good time for the survivors.
nicholsz t1_j728g2l wrote
Reply to comment by juanigp in [D] Understanding Vision Transformer (ViT) - What are the prerequisites? by SAbdusSamad
OS. Kernel. Bus. Processor. Transistor. p-n junction
nicholsz t1_j6zbtu8 wrote
Reply to comment by Max-Phallus in Do photons of different wavelengths combine to make complex wave forms? by Max-Phallus
>Is the output from that antenna a variable waveform photon, or is it multiple photons of different wavelengths being produced at once.
Not just multiple, preposterous numbers of photons are output by radio transmitters; numbers like 10^34 photons per second
The variable waveform isn't from approximating the signal with a series of sine waves like Fourier analysis. It's from changing the wavelength of the photons you're spewing out (in the case of FM), or from increasing / decreasing the number of photons you're spewing out (in the case of AM)
nicholsz t1_j6z1jgm wrote
Reply to comment by netw0rkf10w in [D] ImageNet normalization vs [-1, 1] normalization by netw0rkf10w
Oh I meant fitting to the statistics of ImageNet / the training dataset. There's always got to be some kind of normalization
nicholsz t1_j6yniui wrote
Reply to comment by puppet_pals in [D] ImageNet normalization vs [-1, 1] normalization by netw0rkf10w
With data augmentation techniques (especially contrast or luminance randomization), normalizing would end up being a no-op in the end, right?
nicholsz t1_j6y74ar wrote
Reply to comment by Hal-Har-Infigar in Israeli minister calls himself ‘fascist homophobe’ in leaked recording – but says he ‘won’t stone gays’ by Avicennaete
trump's name for him is "DeSanctimonious" since he's been using the same "I'm Jesus" religious iconography that Trump does
nicholsz t1_j44gxn1 wrote
Reply to comment by sabertoothedhedgehog in [D] Has ML become synonymous with AI? by Valachio
I mean it's the current reality.
AI meant something very, very different 30 years ago than it means now. Massive commercial success in a few areas will do that.
nicholsz t1_j442ph8 wrote
Reply to [D] Has ML become synonymous with AI? by Valachio
I think of AI as a subset of ML, focused on deep learning theory, architecture, and application.
nicholsz t1_ixzkndy wrote
Reply to comment by Celcey in Why do children with a higher bmi start puberty earlier? by -LoveMeMore
We understand that, but the endocrine system which evolved before Cheet-os doesn't.
nicholsz t1_ivzkhdz wrote
Reply to comment by [deleted] in [D] Current Job Market in ML by diffusion-xgb
I know some companies that haven't hit their hiring targets for ML, but they're in the B2B space
nicholsz t1_ivzjbok wrote
Reply to comment by [deleted] in [D] Current Job Market in ML by diffusion-xgb
That's just VC funding though, right? There's still a ton of investment from the big co's
nicholsz t1_j8x9pt8 wrote
Reply to comment by vibriojoey in Where do hormones for HRT and other therapies come from? by Lumpy-Spot
Yeah, this. We just put the genes to create whatever molecule we want in a bunch of e. Coli and grow them in vats then harvest the molecule.
It's super easy to put genes in e. Coli since they don't have a nucleus, you just shove the DNA in there and away they go.