Do organs ever get re-donated? |
- Do organs ever get re-donated?
- Do we know of any diseases dinosaurs could have been infected with?
- Does the atmosphere get pushed up with sea level rise?
- What is the mechanism behind the rate of Radioactive Decay?
- Telomeres - what are they and what do they really do?
- There's a type of blood which is "universal donor" blood. Can we possibly genetically engineer an organ that is universally suitable for transportation?
- Can a hot body in front of a fan cause the fan to blow warm air?
- Does water always freeze at 32 F or can it be colder and still be a liquid?
- Why is bare, non-insulated wires still the norm for electric transmission lines?
- Do all animals have an internal compass? How does it work? How come humans don't have this ability?
- How many years after the last reported "wild" polio case, will polio be declared to be eradicated the way smallpox is?
- If someone can have COVID19 symptoms for months, can they be asymptomatic or mild symptoms for months too?
- We have active cancer cells in labs that have been grown since the 50s and don't experience senescence, would it be possible to utilise this 'immortality' to grow organs?
- What causes the rotational speeds of planets to differ so greatly?
- Does a plane have to slow down after dropping a payload?
- Why didn't tigers spread west of the urals?
- do ants take fall damage?
- Does dreaming with food/eating produces stomach acid?
| Do organs ever get re-donated? Posted: 20 Jun 2020 08:21 AM PDT Basically, if an organ transplant recipient dies, can the transplanted organ be used by a third person? [link] [comments]  |
| Do we know of any diseases dinosaurs could have been infected with? Posted: 20 Jun 2020 05:45 PM PDT I get that paleontology doesn't get much in the way of soft tissue or the ability to look at micro organisms, but I thought I'd ask. Maybe some of the same diseases that birds get today? [link] [comments]  |
| Does the atmosphere get pushed up with sea level rise? Posted: 21 Jun 2020 05:47 AM PDT Is atmospheric pressure dependant upon the sea level, and if so does the atmosphere get 'pushed up' if the sea level rises? So at the moment it's almost impossible to breath at the top of Mount Everest because of the thin atmosphere. But if the sea level were to rise to near the top, would it then be possible to breath normally at the top of Mount Everest? Does that make sense? [link] [comments]  |
| What is the mechanism behind the rate of Radioactive Decay? Posted: 20 Jun 2020 08:10 AM PDT I was taught that after one half-life period, one half of the initial mass will break down. But when I asked why doesn't it consistently decays, meaning after 2 half-lives, all of the matter will be gone, my teacher didn't give an appropriate answer and I had to take that for granted. What is the mechanism behind Radioactive decay that makes it works that way? Why does the presence of more radioactive matter causes more atoms to decay? [link] [comments]  |
| Telomeres - what are they and what do they really do? Posted: 20 Jun 2020 09:00 PM PDT I've heard from a popular podcast that some of modern medicine is based off of tests done with mice (common?) which are bred in captivity, as many testing animals are, I think. Said mice are said to have "elongated" telomeres compared to wild, or natural, mice and therefore are not representative of any population other than a population "being bred for testing". In other words, they have artificially elongated telomeres just by the fact that they are being bred for scientific research. I am of limited I understanding of what telomeres do and of what they are, so I am seeking a proper explanation. I will be consulting friends/family for professional references in addition to this post. My question is this: Are there studies showing that telomeres are in fact, or even just reasonably considered as part of being, shown to govern in some respect the longevity of cells and their replication? And if so, has this been addressed? [link] [comments]  |
| Posted: 21 Jun 2020 03:55 AM PDT Pretty much in the title. If I remember correctly there are a number of antigens on cell membrane which tells leucocytes that those cells belong to the organism. Is it at least in theory possible to make neutral cells so we can grow a surplus of spare organs and stop relying on donor transplants in urgent cases? [link] [comments]  |
| Can a hot body in front of a fan cause the fan to blow warm air? Posted: 20 Jun 2020 10:31 PM PDT Hopefully someone can help me clear this up. Tonight my partner was laying in front of a fan, and I was laying directly next to them. They adjusted the fan so it was blowing directly on them. I then felt warmer air blowing on me and commented that the fan was blowing their hot body heat onto me. They dismissed this and said it was impossible for this to happen. When I tried to discuss it further they told me I was "objectively wrong" and muttered something about wattage and has since continued to refuse to provide any info as to why this is a scientific impossibility. Now, they got mad enough at me for arguing with them to get up and leave, and since then the air the fan is blowing is the same as it was before their hot body had gotten in front of it. They were the only variable, so far as I can tell. There are no heat - generating appliances running, there's no hot food around, the cat was on the other side of the room, the fan was not catching fire, etc. I have no idea why this would be impossible and I don't have any clue what to even look up to try and prove it. I know that when you put a hot pie in front of a fan it'll blow warm air, and I know from growing up without AC that if you put a bowl of ice in front of a fan that it will blow cool air. Can anyone tell me why or why not a human body and a fan wouldn't interact the same way? For context, we had just been outside walking around and it's pretty warm out, and in. This feels kind of crazy to even be asking because A) I definitely experienced the sensation of warm air blowing on me as soon as the fan was adjusted to blow on them and B) it seems like common sense. Arguments like this happen a lot with this person and they are never quick to provide evidence for their insistences and are usually bothered when I try to understand...like now. So will someone here help me? I'm very curious and also a little bothered because I feel like I'm being a tiny bit gaslighted. I'd be delighted to learn that I'm not and that this person is actually right. Thanks! [link] [comments]  |
| Does water always freeze at 32 F or can it be colder and still be a liquid? Posted: 20 Jun 2020 09:38 PM PDT I'm just wondering, can water go below 32 degrees and still be liquid? Like I have my cup of water and it feels really to me, but it still could be above. But like in the arctic it's really cold and there is still water. [link] [comments]  |
| Why is bare, non-insulated wires still the norm for electric transmission lines? Posted: 20 Jun 2020 11:24 PM PDT Is it just cost? I live in an area that's fairly forested and there are fairly frequent power failures due to trees falling onto the power lines. I notice that some streets have insulated, twisted power lines instead - even the Is seems that this has benefits for safety and for reliability in case something falls on the line. Is it just cost that makes this the exception and not the norm? [link] [comments]  |
| Do all animals have an internal compass? How does it work? How come humans don't have this ability? Posted: 20 Jun 2020 10:36 AM PDT Always wondered how birds and fish never got lost while migrating. Anyone know why? [link] [comments]  |
| Posted: 20 Jun 2020 10:34 AM PDT |
| Posted: 20 Jun 2020 10:42 AM PDT I'm reading lately about how some patients are in hospital for months, either needing oxygen for months, or ventilation. Is it possible for people to not have symptoms, or mild symptoms for months and be able to transmit it? [link] [comments]  |
| Posted: 20 Jun 2020 10:17 AM PDT |
| What causes the rotational speeds of planets to differ so greatly? Posted: 20 Jun 2020 10:04 AM PDT I noticed that the rotational speeds of planets vary greatly as they get further from the Sun. Venus takes 243 days to complete one rotation while Jupiter only takes 9 hours. What are the factors that influence rotational speed of planets and why does it differ so much between the inner planets and the outer planets? [link] [comments]  |
| Does a plane have to slow down after dropping a payload? Posted: 20 Jun 2020 09:55 AM PDT If a plane drops a heavy payload while in flight (nuclear bomb? idk), wouldn't a sudden imbalance in the forces propel the plane up suddenly? Then does the plane have to decelerate suddenly? [link] [comments]  |
| Why didn't tigers spread west of the urals? Posted: 20 Jun 2020 06:29 AM PDT The mountains don't look high enough to be an actual hindrance for a tiger. [link] [comments]  |
| Posted: 20 Jun 2020 01:18 AM PDT i didnt know how else to phrase it, but will ants get hurt if they fall from a height? this might be a stupid question my apologies. [link] [comments]  |
| Does dreaming with food/eating produces stomach acid? Posted: 20 Jun 2020 12:58 AM PDT I just had a dream that I was eating and my stomach is hurting. I already suffer with acid reflux and gastritis, but after dreaming of eating I woke up with a stronger pain. So, does dreaming with food/eating produces more stomach acid? [link] [comments]  |
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