Corona virus

Discussion in 'Health & Fitness' started by Write4U, Feb 28, 2020.

  1. Write4U Valued Senior Member

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    No I just have a wider perspective on definitions than what is commonly used.
    The phrase "Natural Selection" does in no way point to procreation . It points to "selection by natural means".

    The virus is a perfect example. It is very successful, not because it can reproduce, but because it can use the host's reproductive abilities to multiply.
     
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  3. billvon Valued Senior Member

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    Natural selection: the process whereby organisms better adapted to their environment tend to survive and produce more offspring.

    Words mean things.
     
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  5. wegs Matter & Pixie Dust Valued Senior Member

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    If a mod is reading - can we bring the different coronavirus threads together under one? Thanks
     
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  7. Write4U Valued Senior Member

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    Means natural selection, no more , no less.
    Words mean things. If you want to add to the meaning of words then you add that additional qualification as you just did. And then you end up with the full definition of "Evolution by Natural Selection."
    http://bio1510.biology.gatech.edu/module-1-evolution/evolution-by-natural-selection-2/
     
  8. Write4U Valued Senior Member

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    So viruses depend on their hosts to reproduce, no? When the host develops immunity, the virus dies because it is unable to reproduce by itself.
    https://ucmp.berkeley.edu/alllife/virus.html

    p.s. I read that viruses and bacteria may have had a common ancestor, but that the bacteria evolved into greater complexity and the virus devolved into simpler complexity.
    Both ways must have been a result of natural selection, no?
     
    Last edited: Mar 19, 2020
  9. Write4U Valued Senior Member

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    An interesting tidbid. In several Eastern countries they are using infrared scanners on large crowds to detect people with elevated temperatures , which are immediately removed and tested for infection.

    In the US we could use marihuana spotting helicopters for the same purpose. This sounds an excellent scanning system for large crowds. This has been used in the past, but I haven't heard of it for the coronavirus

    How thermal-imaging cameras spot flu fevers
    Recordings show up on video screens with hotter objects looking brighter


    http://www.nbcnews.com/id/30523865/ns/technology_and_science-tech_and_gadgets/t/how-thermal-imaging-cameras-spot-flu-fevers/#.XnPs5KNKjb0
     
  10. billvon Valued Senior Member

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    Wrong wavelength, and it doesn't work outside.
     
  11. Write4U Valued Senior Member

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    Apparently you did not read the link.

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    A South Korean quarantine officer (L) monitors a thermal scanner as passengers from an international flight arrive at Incheon airport, west of Seoul on April 28, 2009.

    https://www.forbes.com/sites/jeremy...rared-fever-detection-equipment/#5f5159af60c9

    A drone over a stadium or large gathering might be very effective in spotting fever elevated body temperature. I thought it was extensively used by the military.
     
  12. billvon Valued Senior Member

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    I did. That's why I said wrong wavelength. In addition, it does not work outside.
     
  13. Write4U Valued Senior Member

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    OK, I'll accept that marijuana cameras are not suitable. What about military infra red drones or the scanners which are used in the other examples I cited?
     
  14. billvon Valued Senior Member

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    They will work well in indoor environments. Not really outdoor environments for several reasons.
     
  15. Write4U Valued Senior Member

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