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General science thread

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November 27th, 2020 at 11:21:16 AM permalink
rxwine
Member since: Oct 24, 2012
Threads: 146
Posts: 10971
Heck I wouldn't be surprised to see a vintage looking film of President Kennedy looking dead on table, pulling off the wound makeup to his head then getting up and thanking everyone and walking out of the surgery room one day.
If your candidate is losing, it's because you didn't put enough flags on your truck.
December 6th, 2020 at 10:17:51 PM permalink
rxwine
Member since: Oct 24, 2012
Threads: 146
Posts: 10971
Quote:
Harvard Medical School scientists have successfully restored vision in mice by turning back the clock on aged eye cells in the retina to recapture youthful gene function.

The team’s work, described today (December 2, 2020) in Nature, represents the first demonstration that it may be possible to safely reprogram complex tissues, such as the nerve cells of the eye, to an earlier age.

In addition to resetting the cells’ aging clock, the researchers successfully reversed vision loss in animals with a condition mimicking human glaucoma, a leading cause of blindness around the world.

The achievement represents the first successful attempt to reverse glaucoma-induced vision loss, rather than merely stem its progression, the team said. If replicated through further studies, the approach could pave the way for therapies to promote tissue repair across various organs and reverse aging and age-related diseases in humans.


https://scitechdaily.com/scientists-reverse-the-aging-clock-restore-age-related-vision-loss-through-epigenetic-reprogramming/
If your candidate is losing, it's because you didn't put enough flags on your truck.
December 15th, 2020 at 11:59:59 AM permalink
rxwine
Member since: Oct 24, 2012
Threads: 146
Posts: 10971
Quote:
Researchers say if you can climb four flights of stairs (defined as 60 individual stairs) in under a minute, your heart and cardiovascular system are in great shape.

Not sure where you stand when it comes to heart health? A new study just released by the European Society of Cardiology suggests testing yourself on the nearest staircase.



Of course, if you then die, that’s bad news.
If your candidate is losing, it's because you didn't put enough flags on your truck.
December 15th, 2020 at 5:49:38 PM permalink
Pacomartin
Member since: Oct 24, 2012
Threads: 995
Posts: 11670
Quote: OnceDear
That looks like an awful lot of lead shot into the air, most of which missed. Lucky there wasn't a city in that direction $:o)'




Phalanx is designed to fire a lot of lead shot into the air. The hope is that some of it will hit and destroy the incoming missile even if most of it misses.

It is actually a fairly common design of weapons.
December 22nd, 2020 at 6:14:13 AM permalink
odiousgambit
Member since: Oct 28, 2012
Threads: 115
Posts: 3009
Just heard that we all should have learned one lesson from the Chelyabinsk Meteor event in Russia:

If you look out the window and see a big bright flash in the sky, what should you not do?

You should not go to the window and gawk, and you should instead get away from that window. Forgetting about the possibility of the later arriving not just sound but terrific shock wave, people instead did just the opposite. "Most of the injured were hurt by the secondary blast effects of shattered, falling or blown-in glass" per wikipedia page
Beware of Old Wive's Tales. And you better watch what your younger wives are saying too.
January 3rd, 2021 at 7:40:46 PM permalink
rxwine
Member since: Oct 24, 2012
Threads: 146
Posts: 10971
Quote:
A team of scientists at Freie Universität Berlin has developed an artificial intelligence (AI) method for calculating the ground state of the Schrödinger equation in quantum chemistry.


https://scitechdaily.com/artificial-intelligence-solves-schrodingers-equation-a-fundamental-problem-in-quantum-chemistry/
If your candidate is losing, it's because you didn't put enough flags on your truck.
January 4th, 2021 at 6:15:34 AM permalink
odiousgambit
Member since: Oct 28, 2012
Threads: 115
Posts: 3009
The AI was able to determine that a dead cat is a dead cat.

Actually , Schrodinger's equation has nothing to do with cats but "is a linear partial differential equation that governs the wave function of a quantum-mechanical system" acc to wikipedia article. The math might as well be hieroglyphics for me ... as far as the rest of it, stare at this graph for about 24 hours and see if a light comes on

Beware of Old Wive's Tales. And you better watch what your younger wives are saying too.
January 4th, 2021 at 3:39:12 PM permalink
Pacomartin
Member since: Oct 24, 2012
Threads: 995
Posts: 11670
Quote: odiousgambit
Actually , Schrodinger's equation has nothing to do with cats ..


The really tough problem is Navier Stokes which express conservation of momentum and conservation of mass for Newtonian fluids. AI is making headway here as well.

Navier Stokes
+ mass conservation:
an equation of state to relate p and ρ, e.g. for an incompressible flow:

The 7 Major Unsolved Mathematical Problems
  1. Navier–Stokes Existence and Smoothness.
  2. Poincaré Conjecture.
  3. Birch and Swinnerton-Dyer Conjecture.
  4. Hodge Conjecture.
  5. P Versus NP Problem.
  6. Riemann Hypothesis.
  7. Yang-Mills Existence and Mass Gap.
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