What happens to the DNA in donated blood? |
- What happens to the DNA in donated blood?
- AskScience AMA Series: I am a research professor who teaches about produce food safety and conducts food safety training workshops for growers. AMA!
- How aiming works in new weapons?
- How much of the population typically has *flu* antibodies before flu transmission collapses?
- Why can you not generate DC current from a rotating generator without a commutator?
- How long does it take to produce a vaccine?
- How will quarantine affect our immune systems, not being exposed to day to day germs now?
- What is the life cycle of a cloud? Do they drop rain consistently until they're depleted?
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- How did monkeys get to the New World?
- Why do we assume light takes the path of least time?
- How can Le Chatelier's principle be proved mathematically?
- Why is there supersonic wind on Neptune and how do we know about it?
- If the coronavirus (or any virus for that matter) is so contagious and can be found on surfaces or in the air for long periods of time, then why do you need to swab so deep in your nasal cavity?
- As the average global temperature increases, do we observe the earth's atmosphere increase in volume or pressure?
- Did The Plumages of Feathered Dinosaurs Change During Breeding Season Like Modern Birds' Do?
- Can a sum of powers of natural numbers be expressed as a sum of different powers of the same number?
- How close is a vaccine that works on Monkeys to that of one that works on Humans?
- Why is the night sky dark, instead of being lit up by stars, if there are so many of them around Earth?
- If I had a blood transfusion from someone with antibodies from a virus, do I also have the antibodies from then on out?
- Do objects that dock with the International Space Station affect the ISS's orbit?
- If someone is asymptomatic, can they still die from Covid-19?
- Are there meaningful differences in the properties of different elements in a plasma?
| What happens to the DNA in donated blood? Posted: 29 Apr 2020 12:33 AM PDT Does the blood retain the DNA of the donator or does the DNA somehow switch to that of the receiver? Does it mix? If forensics or DNA testing were done, how would it show up? [link] [comments]  |
| Posted: 29 Apr 2020 04:00 AM PDT Hi Reddit! I'm Keith Schneider, a professor in the Food Science and Human Nutrition Department in the Institute for Food and Agricultural Sciences at the University of Florida. With concerns raised over the spread of COVID-19, consumers are worried about how to handling their grocery store purchases. Right now, UF / IFAS is working to educate consumers and growers alike on the facts that are tied to taking care of produce during a global pandemic. More about me: I received my PhD in Food Science and Human Nutrition, from the University of Florida, my Masters in Public Health from the University of South Florida and a Bachelors in Biology from the University of Florida. I have been working with Extension offices in Florida to help educate growers for over 20 years. Since 2005, I have reviewed various journals on produce safety, food science, microbiology, nutrition and quality. I'll be on at 1 pm ET (17 UT), AMA! Username: UFExplore [link] [comments]  |
| How aiming works in new weapons? Posted: 29 Apr 2020 12:46 AM PDT I don't know how to explain this well and I don't speak much English either. I'm going to try to ask as clearly as possible. Also, I think it goes in Maths, because it is related to geometry. Sorry if I am wrong. I see an ancient weapon, it has two points that line up, form a straight line and I put my eye on that line. The bullet will follow that line, at least in theory. Through two points it passes a single line and on that line I put my eye. I see a modern weapon. It has a red dot and through a dot infinite straight lines pass, so, if I move my eye, the straight line changes. But if I don't move the gun, the bullet's destination point doesn't change. How can you aim a holographic weapon then? I want to stress that I've never seen a gun in real life, I've only seen guns in video games. [link] [comments]  |
| How much of the population typically has *flu* antibodies before flu transmission collapses? Posted: 29 Apr 2020 06:09 AM PDT I hear statistics like NYC may have approximately 30% of its population exhibiting CoV antibodies, but I'm having a hard time contextualizing it to understand the significance. I assume that 100% of a population doesn't need to have antibodies in order for a virus to effectively be unable to spread, based on probability and network dynamics. But I just don't know where that tipping point actually is. That's why I'm asking about the flu virus for context, which is somewhat like CoV and better studied. I'm also asking for the percentage of the population that exhibits antibodies and NOT the percentage that gets the flu, because immunity can be acquired from flu shots. So, I'm assuming the stats I find saying that 5-20% of the population that get the flu annually is likely well below the number I'm looking for. [link] [comments]  |
| Why can you not generate DC current from a rotating generator without a commutator? Posted: 29 Apr 2020 08:25 AM PDT My understanding of power generation as it stands is that the reason a rotating generator makes AC power is because the positive and negative side of the magnet pass over the coil of wire and this the current flows one way or the other depending on which is passing over the coil at that time. So if you wanted to generate DC power directly without a commutator, why can't you have static magnets with only their positive side towards the coil? Wouldn't that prevent the current from switching directions? My understanding of this is all relatively flimsy and I can't find any solid answers online so I would love for people to correct me on this. Thanks! [link] [comments]  |
| How long does it take to produce a vaccine? Posted: 29 Apr 2020 06:10 AM PDT This is a follow up to a previous question I asked. Instead of making an educated guess on which strain of flu to produce a vaccine for, why not wait for the first infections to come out, then test for the strain, and then produce the correct vaccine? [link] [comments]  |
| How will quarantine affect our immune systems, not being exposed to day to day germs now? Posted: 29 Apr 2020 09:35 AM PDT Since we are in quarantine, for the most part we don't leave our houses now. And when we do, we are preventing contact with germs with face masks and washing our hands. Given this, I'd assume our immune systems are getting much less practice now. Does that mean they are getting weaker the longer we quarantine? [link] [comments]  |
| What is the life cycle of a cloud? Do they drop rain consistently until they're depleted? Posted: 29 Apr 2020 02:34 AM PDT I live in a city several hundred kilometers west of another city, which usually gets almost identical weather 24 hours later, including rainfall. Is this a misconception on my behalf, or are there reasons two cities might share weather? [link] [comments]  |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 29 Apr 2020 08:10 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments]  |
| How did monkeys get to the New World? Posted: 28 Apr 2020 01:28 PM PDT |
| Why do we assume light takes the path of least time? Posted: 28 Apr 2020 06:55 PM PDT I'm reading Feynman's lectures on quantum electrodynamics, and they're so far understandable (Feynman's knack for explanation is uncanny). One thing I fail to understand, however, is that the theory seems to rely on photons taking the path with the least amount of time required to get to the detector a majority of the time. Why do we assume this? And how can a photon know what path takes the least time? If we don't assume the presence of a detector, there's no "destination" to measure for, right? I don't know how much of this question is actually answerable lol, but anything is appreciated! [link] [comments]  |
| How can Le Chatelier's principle be proved mathematically? Posted: 28 Apr 2020 09:34 PM PDT You can prove it practically but I was wondering if there was any mathematical proof to why this principle applies. [link] [comments]  |
| Why is there supersonic wind on Neptune and how do we know about it? Posted: 28 Apr 2020 10:23 PM PDT |
| Posted: 28 Apr 2020 11:39 AM PDT I have not personally had a test for COVID-19 but I have seen the procedure. The swab seems to go much deeper than that of a standard flu test. If the virus can be found in most of our mucus membranes why do they need to swab so deep? [link] [comments]  |
| Posted: 28 Apr 2020 02:07 PM PDT Basically the title. The question comes from what I imagine might be an impact of climate change and warming global temperatures. [link] [comments]  |
| Did The Plumages of Feathered Dinosaurs Change During Breeding Season Like Modern Birds' Do? Posted: 28 Apr 2020 09:25 PM PDT |
| Can a sum of powers of natural numbers be expressed as a sum of different powers of the same number? Posted: 29 Apr 2020 12:29 AM PDT For example, can 53 + 50 be expressed as 5a + 5b where a, b is not equal to 3 or 0? [link] [comments]  |
| How close is a vaccine that works on Monkeys to that of one that works on Humans? Posted: 28 Apr 2020 01:34 PM PDT |
| Posted: 28 Apr 2020 04:30 PM PDT Distant stars are little white dots in the sky, and, if there are more than billions of them in our galaxy alone, anywhere we look we should see a white dot. Then why isn't the sky much brighter? [link] [comments]  |
| Posted: 28 Apr 2020 06:49 PM PDT Could the blood of virus "survivors" be used to cure others? [link] [comments]  |
| Do objects that dock with the International Space Station affect the ISS's orbit? Posted: 28 Apr 2020 01:28 PM PDT I had not thought about this until now, but I can't see how this isn't the case unless they have something to prevent this. Or the change in orbit is negligible. [link] [comments]  |
| If someone is asymptomatic, can they still die from Covid-19? Posted: 28 Apr 2020 09:18 PM PDT This may seem like a stupid question but I've googled it and only found that a lot of people are asymptomatic, but no reports about of any have died. [link] [comments]  |
| Are there meaningful differences in the properties of different elements in a plasma? Posted: 28 Apr 2020 10:49 AM PDT For solid, liquid and gas states, differences between different atoms and molecules are very abundant. But that's the thing - all I know of chemistry is confined to these three states. With plasma you obviously don't get any big, complicated molecules because everything is really, really hot, but are there any interesting meaningful differences between the elements in a plasma? Heavier elements are heavier, obviously, but other than that, any meaningful differences? Or is hydrogen plasma mostly the same as helium plasma, and mercury plasma and tungsten plasma (Although good luck even making that on Earth, I guess)? [link] [comments]  |
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