How are blood vessels connected in a partial liver transplant? |
- How are blood vessels connected in a partial liver transplant?
- AskScience AMA Series: We are evolutionary biologists from the University of Tennessee celebrating Darwin Day. Ask Us Anything!
- How significant is fever in suppressing virus outbreaks?
- Is coughing an evolutionary advantage? If so, why do we try to suppress it with cough syrup ?
- Why is it that the AstraZeneca vaccine has a reduced efficacy on the B1351 Corona strand?
- Is lithium that common in the earth's crust? and nickel?
- Is peripheral vascular resistance different from systemic vascular resistance?
- Post translational removing of methionine?
- Presence of SRP in LUCA?
- In theory, could heavier metals that are either magnetic or paramagnetic (e.g. chromium, copper, iron, manganese, etc.), accumulated in the bone or tissue of a person, be affected by an MRI scan, either causing heating or movement of tissue?
- How did early human discovered the uses of fire, and How do they make a fire at the first place? People said that early human made a fire from striking flint with a minerals called "Pyrite", but how did they know that striking those things would make a fire?
- How are public/private cryptographic key pairs actually generated?
- Why are the target northern and southern latitudes for a Mars sample return mission not equal?
- How do aerospace engineers protect the solar shield and fragile components on the JWST from tiny meteoroids?
- Moderna vs Pfizer/Biontech BNT162b1 vs BNT162b2?
- mRNA vaccines work by introducing an mRNA sequence which is coded for a disease specific antigen. Is it possible to introduce an mRNA sequence that directly codes for the antibody?
- How did theropods support their weight on two legs?
- Why is Flash photography not allowed in museums?
| How are blood vessels connected in a partial liver transplant? Posted: 14 Feb 2021 08:25 PM PST The liver has several crucial blood vessel connections. How are transplants 'hooked up' to them? They can't be just sewn on can they? Isn't there a rather large size difference between the primary vessels and the vessels present in the donated organ? [link] [comments]  |
| Posted: 15 Feb 2021 06:14 AM PST Hello! We are evolutionary biologists from the University of Tennessee with a wide variety of research backgrounds. We are here celebrating a belated Darwin Day, which commemorates the birthday of Charles Darwin each year on February 12. Joining us today are:
Ask us anything! We will be answering questions starting around 5pm Eastern Time, 10 UTC. [link] [comments]  |
| How significant is fever in suppressing virus outbreaks? Posted: 15 Feb 2021 07:21 AM PST I was recently sick in Covid 19, during the sickness i developed a slight fever. How much, if any, effect does fever have on how long you are sick? [link] [comments]  |
| Is coughing an evolutionary advantage? If so, why do we try to suppress it with cough syrup ? Posted: 14 Feb 2021 05:19 PM PST Coughing is the way our body tries to get rid of foreign bodies out of our lungs. I wonder why we should prevent our body to cough, even if it allows us to get rid of some virus. I understand that it slows down the spreading of the disease, however I don't understand, from an evolutionary point of view, why this feature was kept. If it is so disadvantageous, why would this trait survive ? If it's advantageous, why do we suppress it ? [link] [comments]  |
| Why is it that the AstraZeneca vaccine has a reduced efficacy on the B1351 Corona strand? Posted: 15 Feb 2021 04:54 AM PST As far as I know both types of vaccines, mRNA and vector, accomplish the exact same response from the human body, producing the spike protein present on the SARS-cov-2 virus. Therefore I find it strange, that the mRNA vaccines show higher efficacy than the Vector vaccine by AstraZeneca. [link] [comments]  |
| Is lithium that common in the earth's crust? and nickel? Posted: 15 Feb 2021 04:58 AM PST Hi I heard Elton Musk say in a podcast that lithium is one of the most common elements on earth, and that we could find it anywhere. Nickel was a little more difficult. After a brief survey he obtained the information that lithium is number 32 and nickel 23, in terms of abundance in the earth's crust. Can anyone clarify me about this? Could Elon Musk be wrong? Thanks [link] [comments]  |
| Is peripheral vascular resistance different from systemic vascular resistance? Posted: 15 Feb 2021 06:56 AM PST In StatPearls at NCBI website, they have 2 different but connected chapters explaining each. Is there a difference between the usage of these terms? [link] [comments]  |
| Post translational removing of methionine? Posted: 15 Feb 2021 06:53 AM PST
I wonder is there statistics about how many percent of the proteins have their N-terminal methionine removed in all organisms and for example in human? I can infer it's like almost all? [link] [comments]  |
| Posted: 15 Feb 2021 06:51 AM PST Signal recognition particle (SRP) is ribonucleoprotein. Does presence of RNA and fact, that no organism evolved protein-only SRP, say that LUCA could have this ribonucleoprotein? [link] [comments]  |
| Posted: 15 Feb 2021 04:38 AM PST There seem to have been some reports of metals in tatoos possibly being affected, but what about those metals in tissues or bone, accumulated either through a lifetime of diet or by toxic exposure. [link] [comments]  |
| Posted: 14 Feb 2021 10:13 AM PST |
| How are public/private cryptographic key pairs actually generated? Posted: 14 Feb 2021 12:45 PM PST Everything I read seems to always be really heavy on simple example theory and totally empty on real world implementation. Like how does my computer know what massive primes to use? How does it even know they are prime? If there is a list of primes to use then aren't there tables that would easily break public keys? [link] [comments]  |
| Why are the target northern and southern latitudes for a Mars sample return mission not equal? Posted: 14 Feb 2021 10:30 AM PST Proposed landing sites for MSR missions appear to target a latitude range of -5 degrees to 25 degrees. Why wouldn't these two values be equal and opposite? Sources for clarification- https://www.lpi.usra.edu/planetary_news/2014/04/04/scientists-favor-four-exomars-landing-sites/ https://mepag.jpl.nasa.gov/meeting/2011-06/P3_GRANT_Landing_Sitesv3.pdf Page 9: -14.9 degrees stresses southern latitude limit [link] [comments]  |
| Posted: 14 Feb 2021 03:13 PM PST |
| Moderna vs Pfizer/Biontech BNT162b1 vs BNT162b2? Posted: 14 Feb 2021 02:39 PM PST There are people that says that the Moderna vaccine should work as well as Pfizer/Biontech because they uses the same spike. Do anyone know how much difference there are between Moderna and BNT162b2 compared to between BNT162b1 and BNT162b2? What was the problem with BNT162b1 that made it fail before phase 3? [link] [comments]  |
| Posted: 14 Feb 2021 10:54 AM PST |
| How did theropods support their weight on two legs? Posted: 14 Feb 2021 03:50 AM PST There are a lot of incredibly large theropods like T-Rex, giganotosaurus, spinosaurus, etc. which seem to exceed large animals like elephants in weight, even though elephants are quadrupedal. I'd like to know how the leg bones of theropods were able to support the weight of these animals on two legs. I have read that hollow bones, as seen in birds and theropods, are supposed to be very strong, but I've also read that large animals like elephants and sauropods have almost entirely solid leg bones to support their weight. [link] [comments]  |
| Why is Flash photography not allowed in museums? Posted: 14 Feb 2021 04:49 AM PST Tagging physics but it might be chemistry. What's the story about the flash that damaged the old things? Or is it more a social thing so that everyone gets the same experience? [link] [comments]  |
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