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alyx commented on Toothpaste made with keratin may protect and repair damaged teeth: study   kcl.ac.uk/news/toothpaste... · Posted by u/sohkamyung
buybackoff · 7 months ago
The picture says "enamel-mimicking" and the text says "protective coating that mimics the structure and function of natural enamel", so it looks like a protective layer, not true repair. I've been using a paste with novamin lately, it also creates a protective layer and is also marketed as "repair". I like it and feel some heat when it contacts with teeth, so the chemical reaction must be working. But the marketing leaves a bad taste in the mouth.
alyx · 7 months ago
Never heard of Novamin but doesn't look promising?

https://pmc.ncbi.nlm.nih.gov/articles/PMC7068624/

Conclusion Review shows that Novamin has significantly less clinical evidence to prove its effectiveness as a remineralization agent in treating both carious and non-carious lesion. Hence, better designed clinical trials should be carried out in the future before definitive recommendations can be made.

alyx commented on Wuhan lab samples hold no close relatives to virus behind Covid   nature.com/articles/d4158... · Posted by u/rntn
alyx · a year ago
4 years later? lol
alyx commented on Memories are not only in the brain, human cell study finds   medicalxpress.com/news/20... · Posted by u/vivekd
alyx · a year ago
The physical body is what the mental state (ex, memories) "looks like" from a third person perspective.
alyx commented on First observation of a virus attaching to another virus   umbc.edu/stories/first-ob... · Posted by u/wjSgoWPm5bWAhXB
COGlory · 2 years ago
Diffusion is typically passive, sometimes (rarely) guided. But actual genome delivery usually requires energy stored in the capsid. For membraneous viruses, it's usually energy stored in the spike/fusion protein, plus some help from the host.

Note: I'm talking about energy stored in the 3D structure, not ATP molecules.

alyx · 2 years ago
Where does the energy stored in the 3D structure come from? How does it get infused with said energy?
alyx commented on First observation of a virus attaching to another virus   umbc.edu/stories/first-ob... · Posted by u/wjSgoWPm5bWAhXB
quonn · 2 years ago
The propagate by entering cells that do produce their energy?

Theoretically not producing spendable energy would not exclude activity either as long as some previously made energy is spent.

alyx · 2 years ago
How do you "enter a cell" without exerting energy?
alyx commented on First observation of a virus attaching to another virus   umbc.edu/stories/first-ob... · Posted by u/wjSgoWPm5bWAhXB
fsckboy · 2 years ago
The smallest things in your body that have a metabolism are your cells. Cells are much much bigger than viruses. The things in your body that are the same size as viruses also do not have a metabolism.

It's sort of like there's an engine in your car. But there's not an engine in your engine, there are just parts that together make an engine. None of those parts have car-ness, but together they do. Your car has many parts all working together to make a comfortable and useful car. But the parts of the car if they are separated and just sitting on the bench, just sit there.

Viruses are like those parts, car parts. When they are not in a cell, they just sit there. But if a virus part gets into your car, it gets to participate in the metabolism of the whole car, by acting like one of the other parts and just contributing its part-in-the-system. Unfortunately, the virus part's part-in-the-system is to turn your car into a factory/machine that makes more virus parts. This is how it spreads. This is why you do not want to get a virus.

In this news story, a virus that is missing a piece of how to be a functioning part in your car, attaches to another virus that has that missing piece, and together they behave like a part that knows how to become one of your car parts.

alyx · 2 years ago
Okay so following your analogy, viruses are like subcomponents of an engine.

How are subcomponents of an engine moving in space without ever exerting energy? I can imagine how this can happen infrequently but can't see how this propagation (movement without energy) is sustainable.

alyx commented on First observation of a virus attaching to another virus   umbc.edu/stories/first-ob... · Posted by u/wjSgoWPm5bWAhXB
alyx · 2 years ago
I really do not understand viruses.

Given that viruses do not have a metabolism and are not able to produce their own energy, how do these satellite viruses then survive off of other viruses?

I don't even understand how without energy producing mechanisms viruses can survive, propagate, etc.

Can anybody recommend any good books on the matter?

alyx commented on Bee and butterfly numbers are falling, even in undisturbed forests   science.org/content/artic... · Posted by u/pseudolus
alyx · 3 years ago
Maybe they are just moving to beyond-the-ice-wall.
alyx commented on Ask HN: Who operates at scale without containers?    · Posted by u/disintegore
alyx · 4 years ago
Windows, bare metal, 800+ processes, no containers. Guess the service ;)
alyx commented on Is Consciousness Everywhere?   thereader.mitpress.mit.ed... · Posted by u/fortran77
namero999 · 5 years ago
For a superb and rigorous account of the ontological basis of consciousness, and why it might be superior to panpsychism while being more in line with scientific evidence, check "The idea of the world" by Bernardo Kastrup (or any of his work/youtube interview). Really compelling case.

He used to work at CERN, and was the youngest executive at ASML, till recent when he decided to dedicate himself solely to philosophy. He's not your regular wanna be woo-guru for sure.

alyx · 5 years ago
I also vouch for Bernardo. I have read all his books.

His approach, reasoning and explanations have been very appealing to my analytical Mind.

u/alyx

KarmaCake day462March 19, 2008View Original