Score
Title
381
AskScience Panel of Scientists XVII
693
Help us fight for net neutrality!
10921
From my kid: Can you put a marshmallow on a stick out into space and roast it with the sun?
3363
Hein et al (2017) have explored scenarios for sending a spacecraft to the recently confirmed interstellar asteroid "Oumuamua". What payloads and capabilities would we wish to prioritize on the exploration of this strange and peculiar object?
24
On my bike: is it more efficient to pedal fast in a low gear or slower in a high gear?
12
Is deep-earth nuclear fission heating the Earth's interior?
5
What exactly is the Van Allen radiation belt?
3
Ask Anything Wednesday - Engineering, Mathematics, Computer Science
3
How are doctors able to determine genetic abnormality in a fetus, by testing the mother’s blood?
6
Why can't powerbanks charge while being charged?
6
Can blue light cause cancer? What about UVA? Where is the threshold?
5
How, or why, do refraction and dispersion occur?
4
Is it a coincidence that the moons rotation around its axis matches the duration for its revolution around the earth? Or is there some scientific explanation on how these aligned in such a fashion?
2
Are all prime numbers smaller than the biggest prime number discovered?
4
How does restricting Internet work?
1
Are electrostatic interactions photon-mediated?
21
Why are radio waves and microwaves more damaging to the human body than light waves?
2
How does your body heal cuts?
11
In my Psychology textbook it says that cortisol (a result of stress) reduces telomerase activity, therefore speeding up the aging process, however, I know that exercise also releases cortisol, yet is known to combat aging - how?
1
Why children with adenoditis fall behind in their neurophychiatric development and do they recover in that aspect after the inflammation is gone?
1
Why does the index of refraction of water change with temperature?
2
I measured an imaginary component of Earth's magnetic field?
11
Why do planets orbit in planes?
3
Why don't electrons in a superconductor radiate away their energy?
2
Why does water behave like a mirror?
1
Do cephalopods control their camouflage consciously, if yes how exactly can an animals thought's change it's cells?
113
Why does the infinite series 1/n diverge?
1
How do they know 'Oumuamua is elongated vs of assymetric albedo? (Bonus Question: Is the assumed rotation stable?)
1
Why do antiparticles go back in time? For example, when using Feynman diagrams.
13
Do we create memories of every single event that happens to us?
1
Which is more biologically dangerous, X-rays or Gamma rays?
6
Can dogs, in theory, talk?
1
Is there any specific unit or measurement system for poisoning levels in general?
8
Do people with bionic limbs still experience phantom pain?
323
Why, when you are paralyzed from the neck down, are your involentary organs not paralyzed as well?
4
How is voltage created in a battery cell and how is it maintained at a ~constant value throughout its life/usage?
4069
Why are solar-powered turbines engines not used residentially instead of solar panels?
0
Why don't the absorption lines and emission lines in stars cancel out?
5
why can't crystalline solids bond back together after cracking apart?
37
Is attraction caused by us wanting to reproduce with peoole with better genetics in areas we lack?
2
What is "Reduced Iron" found as an ingredient in food?
2078 [deleted] [removed]
165 tbird1134 I have experience with surgically implanting radio telemetry tags in the abdomen of different species of fish, they're made of metal encased in a cylindrical tube of clear hard plastic. Multiple times I've taken them out of fish (living and dead) that have had them in for a year or two. What I've found is that their bodies actually absorb the object and begin calcifiing and attaching flesh to the object. I have no idea if that's the same with humans but it happens in fish.
25 Sounkeng One thing that is missing from the responses so far is that these objects can (and typically do) result in a low grade chronic inflammatory response that typically results in the formation of a fibrous capsule surrounding the implant. Also if particulates break off or form with the degradation of the material than it can result in macrophages being unable to destroy that particulate matter and so they fuse with other macrophages resulting in the formation of giant cells to try and destroy it resulting in frustrated phagocytosis. As others have said certain materials are better and are used a lot as implants because they have minimal degradation, have minimal interference with biological processes among a number of other desirable properties. But even these materials (think Silicone for breast implants) still result in fibrous capsule formation.
79 NilacTheGrim Our immune response largely targets proteins and other organic compounds. This is for good reason -- generally the things trying to kill us are all viruses (coated in proteins) or bacteria (also coated in some proteins). We don't really have much of an immune response to things like metals or non-reactive inorganic compounds. Our immune systems largely ignore these things. Coating the chips properly with a suitable material will almost guarantee 0 immune response, basically.
10 dyneine There is ongoing research for better threads (sticking materials ) and coatings that are more bio compatible and don't get attacked by the immune system or are harmful to the cells. This is not done for micro chips, but for implants . Like for example hip or knee implants where the whole bone or parts of it needs to be replaced
2073 0 [deleted] [removed]
164 0 tbird1134 I have experience with surgically implanting radio telemetry tags in the abdomen of different species of fish, they're made of metal encased in a cylindrical tube of clear hard plastic. Multiple times I've taken them out of fish (living and dead) that have had them in for a year or two. What I've found is that their bodies actually absorb the object and begin calcifiing and attaching flesh to the object. I have no idea if that's the same with humans but it happens in fish.
24 0 Sounkeng One thing that is missing from the responses so far is that these objects can (and typically do) result in a low grade chronic inflammatory response that typically results in the formation of a fibrous capsule surrounding the implant. Also if particulates break off or form with the degradation of the material than it can result in macrophages being unable to destroy that particulate matter and so they fuse with other macrophages resulting in the formation of giant cells to try and destroy it resulting in frustrated phagocytosis. As others have said certain materials are better and are used a lot as implants because they have minimal degradation, have minimal interference with biological processes among a number of other desirable properties. But even these materials (think Silicone for breast implants) still result in fibrous capsule formation.
79 0 NilacTheGrim Our immune response largely targets proteins and other organic compounds. This is for good reason -- generally the things trying to kill us are all viruses (coated in proteins) or bacteria (also coated in some proteins). We don't really have much of an immune response to things like metals or non-reactive inorganic compounds. Our immune systems largely ignore these things. Coating the chips properly with a suitable material will almost guarantee 0 immune response, basically.
10 0 dyneine There is ongoing research for better threads (sticking materials ) and coatings that are more bio compatible and don't get attacked by the immune system or are harmful to the cells. This is not done for micro chips, but for implants . Like for example hip or knee implants where the whole bone or parts of it needs to be replaced