Will a second covid infection necessarily be milder? |
- Will a second covid infection necessarily be milder?
- Does air-conditioning spread covid?
- How does the immune system defend from airborne infections?
- What are the solutions to prevent/reduce wildfires?
- How much, if at all, have covid vaccines been improved since public release?
- Why is Fosbury-flop the most efficient way to do high jump ?
- Can Bats Catch the Latest Variants of COVID-19?
- What was wrong with the design of the control rods in the Chernobly reactor?
- Why are the elements between polonium and radium (“abyss of instability”) so much more radioactive than the elements on either side?
- What differiantes psilocybin from a typical ssri?
- What age does collagen production peak at?
- What don’t mosquitos carry HIV?
- What caused the largest earthquake and what was its magnitude?
| Will a second covid infection necessarily be milder? Posted: 08 Aug 2021 01:57 PM PDT If someone gets infected with mild illness, recovers and also 6 months pass (no more antibodies) and then get infected again, will the immune system still necessarily react better (mild/even milder illness)? What if the second infection was a new (more dangerous) variant? [link] [comments]  |
| Does air-conditioning spread covid? Posted: 09 Aug 2021 12:35 AM PDT I live in India and recently in my state gyms have opened but under certain restrictions, the restrictions being "gyms are supposed to operate at 50 per cent of capacity, shut down at 4 pm, and function without air-conditioning" I don't have problem with the first 2 but Working out without ac is extremely difficult especially when the avg temps is about 32C here with 70-90% humidity. It gets extremely hot and is impossible to workout. Now my main concern is does air-conditioning really spread covid? is there any scientific evidence for this? Also my gym has centralized air-conditioning [link] [comments]  |
| How does the immune system defend from airborne infections? Posted: 08 Aug 2021 02:24 PM PDT If I understand things correctly: COVID-19 attaches to ACE2 receptors available in your airway. So it doesn't need to go through your bloodstream at any point to cause an infection, then once it infects a cell, it releases a protein that suppresses that cell's ability to release cytokines, which is responsible for signalling the immune system. So does that mean that each successful infection is able to complete its life-cycle, or does the body have a way of defending from this? Also, does immunity/antibodies play a factor in such cases? [link] [comments]  |
| What are the solutions to prevent/reduce wildfires? Posted: 09 Aug 2021 02:54 AM PDT Obviously there is a lot of talk that this is all prompted by climate change and we should reduce our emissions, but that's something that won't stop wildfires occuring next year for example. I'm just wondering if Greece/California/etc could do some activity to reduce wildfires from occuring next year, once they get the current ones under control. [link] [comments]  |
| How much, if at all, have covid vaccines been improved since public release? Posted: 08 Aug 2021 07:33 AM PDT This question applies to the vaccines available to the public. Are we still on version 1.0? Have formulas been improved as more variants are researched? Have we even made it to 1.0 considering that they were released under emergency release guidelines? Here in the US I only hear about Pfizer, AstraZeneca, and J&J. What are other promising vaccines and how do they stack up to the 3 I mentioned? Are other less reputable countries, like China and Russia, reporting advances in their vaccines and has anyone been able to verify the claims? [link] [comments]  |
| Why is Fosbury-flop the most efficient way to do high jump ? Posted: 08 Aug 2021 02:18 PM PDT While doing some research about it I saw that it allows the jumper to keep his center of mass below the bar. But in pole vault they also keep their center of mass below the bar but with their body facing the bar. If one approach is more efficient than the other to keep its center of mass below the bar, why does high jumper don't adopt the technique of pole vaulter (or vice versa) ? [link] [comments]  |
| Can Bats Catch the Latest Variants of COVID-19? Posted: 08 Aug 2021 02:41 PM PDT My understanding is the COVID-19 originally jumped from bats to humans. Is it possible for the latest variants, like delta or lambda, to be transmitted to bats? [link] [comments]  |
| What was wrong with the design of the control rods in the Chernobly reactor? Posted: 08 Aug 2021 11:33 PM PDT As far as I understand, the control rods were made of boron, a strong neutron absorber, and their tips, which were seperated by a small space from the boron part, were made of graphite. The graphite slows the neutrons and thus increases the reactivity when it is between the fuel rods. According to what I see in the images on the internet, when the control rods were fully withdrawn the graphite tips were still inside the reactor and acted as moderators favouring the reactivity. As soon as the SCRAM button was pressed, the rods started travelling downwards and the boron parts started to enter the space between the fuel rods. I read that the graphite tips created a local temperature increase at the bottom of the reactor which started the catastrophic chain of events. My question is: why were there no such a local temperature increase prior to SCRAM if the graphite tips were still inside the reactor, between the fuel rods. Am I wrong by saying that the tips were already in the reactor somewhere in the middle before the SCRAM started? [link] [comments]  |
| Posted: 08 Aug 2021 08:36 AM PDT The elements astatine, radon and francium have longest lived half-lives billions to trillions of times less than the heavier, more stable elements like thorium and uranium. What causes this to be the case and how is it related to "islands of stability"? [link] [comments]  |
| What differiantes psilocybin from a typical ssri? Posted: 08 Aug 2021 08:42 AM PDT Psilocybin seems to affect the reuptake of serotonin but it is not something you take everyday as opposed to a ssri [link] [comments]  |
| What age does collagen production peak at? Posted: 08 Aug 2021 07:48 AM PDT |
| What don’t mosquitos carry HIV? Posted: 07 Aug 2021 03:11 PM PDT |
| What caused the largest earthquake and what was its magnitude? Posted: 07 Aug 2021 07:47 PM PDT The strongest measured earthquake was 9.5 on the Richter scale (Valdivia earthquake, 1960). This event triggered numerous tsunamis across the Pacific, including a 25 meter (80 ft) tsunami in Chile, and an 11 meter (35 ft) tsunami in Hawai'i. Nearly 1700 people died (including casualties from the tsunamis) and more than 2 million people were rendered homeless. But this isn't the worst earthquake we know about. Millions of years ago, a magnitude 12 earthquake permanently altered the shape of our planet and triggered volcanic eruptions around the globe. It can be difficult to imagine how devastating a magnitude 12 earthquake is, so consider this: any place you could have stood on Earth that day would have felt like a magnitude 9 earthquake. This event is known as the Chicxulub Impact, and people remember it for wiping out three quarters of the species on Earth—including the dinosaurs. But that still isn't the biggest earthquake Earth may have experienced. The Giant Impact Hypothesis says that the earth's moon may have been formed when a Mars-sized planet ("Theia") collided with proto-Earth around 4.5 billion years ago. Here's an animation of what that might have looked like. Sources don't really describe this event in earthquake terms, but I have a difficult time imagining an earthquake larger than one which could create a moon. What was the magnitude (Richter scale) of the largest earthquake, and (if it wasn't the Theia Impact) what caused it? [link] [comments]  |
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