Do Covid-19 vaccines also protect against SARS-COV-1? |
- Do Covid-19 vaccines also protect against SARS-COV-1?
- Why does "red hepatization" occur in pneumonia, but pleural effusions are often clear or cloudy/not red?
- How well can humans perceive pitch?
- Where does helium go?
- How long does it take for the adaptive immune system to produce antibodies to a reinfection?
- Are all food flavours just different combinations of the main tastes? (Sweetness, saltiness, spiciness, sourness and bitterness)
- Why are Blue Holes anoxic?
- Can people have different, naturally developed, antibodies for the same diseases?
- Is the coronavirus pandemic expected to have a noticeable impact on global population growth in the medium to long run?
- How do scientists determine the exact chemical formula and composition of a certain substance (especially for the complex carbon-based compound)?
- Does talking use more oxygen than just breathing?
- How do you 'wire up' transplant organs?
| Do Covid-19 vaccines also protect against SARS-COV-1? Posted: 30 Apr 2021 04:26 AM PDT |
| Posted: 30 Apr 2021 07:33 AM PDT I'm not sure how clear the question is, but here goes: So, in lobar pneumonia, microbes get into the lungs, start an inflammatory response, and this attracts fluid, right? So there is congestion in the lobe of the lung because fluid has accumulated. I get that the blood vessels become very full, and so do the alveoli, so I get why exudate would come out of the vessels. But I don't understand why "red hepatization" of the lungs occurs - why have red blood cells also come out? When pretty much the same thing happens in pleural effusion - when pulmonary hypertension leads to pleural effusion - the fluid isn't red? How come red blood cells leak out in one case, but not the other? [link] [comments]  |
| How well can humans perceive pitch? Posted: 29 Apr 2021 04:30 PM PDT For the most part, if you played two consecutive notes, a person should be able to identify which is higher pitch and which is lower pitch, right? And if you played three consecutive notes, you should be able to identify the same thing between notes 1 and 2, and then 2 and 3, simply because those notes were played adjacent to each other, so the comparison is the same. But if you played 3 consecutive notes, would a person be able to tell which was higher pitched, note 1 or 3, completely ignoring note 2? The reason I ask is because they're interrupted by note 2, so it isn't a side by side comparison. The method a person typically uses to identify the difference in pitch between two notes (comparing them side by side) doesn't apply to here, so could a person still do it? [link] [comments]  |
| Posted: 29 Apr 2021 12:50 PM PDT We know that helium rises because it is lighter than most of the atmosphere. However, it should still be held around the earth due to gravity. So, is there a region of the atmosphere that is mostly helium or has a greater concentration of it, or does something else happen to it once it reaches higher altitudes? [link] [comments]  |
| How long does it take for the adaptive immune system to produce antibodies to a reinfection? Posted: 29 Apr 2021 09:12 PM PDT For example, getting an infection from a virus after a vaccine or a 2nd infection of the common cold [link] [comments]  |
| Posted: 29 Apr 2021 08:17 AM PDT Sort of like how colours are made up of red, blue and yellow [link] [comments]  |
| Posted: 29 Apr 2021 04:30 AM PDT I've been reading up on blue holes and discovered that DO levels start depleting around the rim of the sinkhole and eventually become anoxic at depths. For example, Amberjack Hole on the Florida continental shelf shows oxygen depletion beginning at the holes rim (32m of depth), with a hypoxic zone (40-70m), and an anoxic layer from 80m to the bottom of the hole (Gulf of Mexico blue hole harbors high levels of novel microbial lineages ). Why does this occur? The only conclusions I have been able to draw are that the inability for turnover means oxygen cannot permeate down into it's depths, or that there is something do with the surrounding limestone blocking DO. Are either of these the case, or is there a completely different reason? [link] [comments]  |
| Can people have different, naturally developed, antibodies for the same diseases? Posted: 29 Apr 2021 07:44 AM PDT Some time ago there was a post saying that the number of random mutations of our antibodies rises greatly when we are sick, so we can develop immunity to novel pathogens. So I started wondering if when people catch, for example, Covid and then beat it naturally, or even through vaccine, do they develop antibodies that are effective, but built differently than those of other people? [link] [comments]  |
| Posted: 29 Apr 2021 06:49 AM PDT I'm interested in both the direct impacts (reduction in population because of increase in deaths) and the indirect impacts (decrease in birth rates over the next few years because of parents deciding against having children in this environment). [link] [comments]  |
| Posted: 28 Apr 2021 09:02 PM PDT Also, how do chemists create a working procedure/method to synthetically produce a certain chemical in laboratory setting? Is it purely by trial and error? [link] [comments]  |
| Does talking use more oxygen than just breathing? Posted: 28 Apr 2021 08:39 PM PDT It's a trope you've seen in movies and TV: Our heroes are trapped and rapidly running out of air. One starts talking, but the other shushes them, "Don't talk. We need to conserve oxygen." Really, though? Aside from the muscles necessary for speech, your body wouldn't use any more oxygen than breathing normally, would it? [link] [comments]  |
| How do you 'wire up' transplant organs? Posted: 28 Apr 2021 06:02 PM PDT Organs generally have quite complicated blood, lymph and nerve supplies/innervations/drainage. When you transplant an organ, do these connections eventually reform in the body? If so, how long does this take? Or do you need to manually stitch together blood vessels and nerves of the recipient with those of the donor organ? [link] [comments]  |
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