Why does it take 2 weeks for the Covid vaccine to take effect? Would immune-suppressing drugs affect vaccine effectiveness if taken during these two weeks? |
- Why does it take 2 weeks for the Covid vaccine to take effect? Would immune-suppressing drugs affect vaccine effectiveness if taken during these two weeks?
- Why are Marie Curie's possessions kept in lead boxes?
- When did the most recent common ancestor of coronaviruses and influenza viruses exist?
- How do forbidden quantum transitions happen?
- Why do high pressure cylinders most often have rounded bottoms?
- Have any typical brain fog treatments been studied for people who have covid-induced brain fog?
- Is your risk of developing myocarditis from the COVID-19 vaccine greater if you have been previously diagnosed?
- How is sea level throughout geologic time determined?
- We often hear about the fastest land animal on Earth being the cheetah. But what would the fastest land animal be over a distance of a marathon? How high would the top human runners rank?
- How long does live prey live in the gullet of a predator for, and what is the cause of death?
- Why does weather radar only use one spinning dish?
- If sleep cycles are approximately 90 minutes, why is the recommended amount of sleep 8 instead of 9 hours?
| Posted: 31 Jul 2021 10:52 AM PDT Immune suppressing drugs such as acetaminophen, ibuprofen, alcohol, cannabis etc. (Not seriouser stuff like chemo and steroids) ETA: I'm wondering specifically about the MRNA vaccines. And I'm referring to common anti-inflammatories like the ones listed, not the immunosuppressive drugs used in cancer treatments or organ transplants. ETA2: I don't know why comments keep getting deleted. I'm not the one deleting them??? [link] [comments]  |
| Why are Marie Curie's possessions kept in lead boxes? Posted: 31 Jul 2021 09:35 PM PDT I keep seeing posts like this saying her body and belongings are so radioactive that they're kept in lead boxes. The Radium isotope with the longest half life is Ra256, which is an alpha emitter. The longest lived Polonium isotope has a half life of 4 months and is also an alpha emitter. She worked with Uranium and Thorium - much longer lived but also alpha emitters. So you should be able to store them in a cardboard box - you just don't want to handle them in ways that might cause you to ingest or breathe in radioactive material. So what are they contaminated with that requires a lead box? [link] [comments]  |
| When did the most recent common ancestor of coronaviruses and influenza viruses exist? Posted: 31 Jul 2021 01:02 PM PDT In some quarters comparisons between covid and the flu have been taken so far as to claim that covid is a flu. Such claims seem patently incorrect, as the viruses belong to different taxa - but just how wrong is it? Would it be comparable to claiming that cats are dogs, or more akin to equating cats and nematodes? I'm assuming here that all viruses have a shared ancestry, as it seems to be the case for all organisms conventionally considered alive (bacteria, archaea, eukaryotes). Do we know for sure that this is the case for viruses, or is it possible that they appeared more than once? [link] [comments]  |
| How do forbidden quantum transitions happen? Posted: 31 Jul 2021 03:02 PM PDT Ok, so I majored in (bio)chemistry and work in chemistry for my job. I have an introductory knowledge of quantum physics and how it is different from classical models, but not a deep mathematical understanding. One thing that spectroscopists mention often is "forbidden" quantum transitions. I gather that these are supposedly against the rules of physics, so in my understanding they should never occur, but they very much do. So, they are much longer lived quantum states because of their "forbidden" nature disallowing an "allowed" path to relax back to ground state, but they still manage to do so, but slower. I don't understand how something can be against the laws of physics and still happen. Wouldn't that imply that our understanding of what's happening incomplete and we need a better model? [link] [comments]  |
| Why do high pressure cylinders most often have rounded bottoms? Posted: 31 Jul 2021 11:51 AM PDT |
| Have any typical brain fog treatments been studied for people who have covid-induced brain fog? Posted: 31 Jul 2021 04:25 PM PDT It's my understanding that brain fog can be caused by a variety of different things. Some people with ADHD, CFS, etc. experience brain fog. Brain fog can also appear due to lack of sleep, illness, etc. It's also my understanding that treatments like amphetamines (Adderall) can usually effectively reduce brain fog symptoms, regardless of cause. So my question is has anyone studied the effect of amphetamines or other stimulants on covid brain fog? [link] [comments]  |
| Posted: 31 Jul 2021 09:48 AM PDT |
| How is sea level throughout geologic time determined? Posted: 31 Jul 2021 07:39 PM PDT Many geologists since the dawn of sequence and seismic stratigraphy have attempted to craft sea level curves for the last 540 million years (Phanerozoic). How are these made? Is it a matter of calculating the proportion of marine vs. continental sedimentary units in a specific place? Or does it have to do with systems tracts? [link] [comments]  |
| Posted: 30 Jul 2021 05:24 PM PDT |
| How long does live prey live in the gullet of a predator for, and what is the cause of death? Posted: 30 Jul 2021 04:49 PM PDT I'm thinking of live prey that has been swallowed whole without envenomation, as in a pelican swallowing fish. [link] [comments]  |
| Why does weather radar only use one spinning dish? Posted: 30 Jul 2021 04:56 PM PDT I get that it only scans one line so it needs to sweep to get a complete picture, but that means that the sampling rate for any given direction is equal to the RPM of the dish. So why not have 3 dishes 120 degrees out of phase so you get an effective sample rate of 3 times the RPM? I would imagine in meteorology the finer resolution you could achieve would have a great effect on accuracy? [link] [comments]  |
| Posted: 30 Jul 2021 09:56 AM PDT Basically title. Five 90 minutes cycles would be 7 hours 30 minutes, and six 90 minute cycles would be 9 hours. Is there any reason 8 hours of sleep is the decided upon number? Or just good 'middle ground'? Thanks! [link] [comments]  |
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