Is the universe 13.8 billion years old everywhere? |
- Is the universe 13.8 billion years old everywhere?
- I heard some electron microscopes use gallium. How is this gas used in an electron microscope?
- What is the technical difference between Cheek and Nasal PCR Covid tests?
- What starts the coagulation cascade during blood stasis?
| Is the universe 13.8 billion years old everywhere? Posted: 12 Jan 2022 06:36 PM PST |
| I heard some electron microscopes use gallium. How is this gas used in an electron microscope? Posted: 12 Jan 2022 05:14 PM PST |
| What is the technical difference between Cheek and Nasal PCR Covid tests? Posted: 12 Jan 2022 02:47 PM PST What are the technical difference(s) between the PCR Covid tests which use a sample from your cheek/throat versus a shallow nasal swab? Are they generally interoperable? Is there a different solution (whatever I put the fancy q-tip in) or different fancy q-tip? What would happen if I took a throat/cheek sample using a nasal kit? Near me (Los Angeles County, California) almost all of the PCR tests offered are the shallow nasal swabs. Those aren't super comfortable, and my children HATE them to the point of needing to restrain them to swab them. Works great at a drivethrough testing site, but less so at a walk up. I'm curious why testing centers overall haven't moved to the far easier to collect cheek swabs. [link] [comments] |
| What starts the coagulation cascade during blood stasis? Posted: 12 Jan 2022 02:20 PM PST I understand that stasis of blood increases the likelihood of forming blood clots due to the accumulation of the numerous clotting factors/proteins in a somewhat localized spot. However, how is factor XII activated in this situation to actually initiate the coagulation cascade? [link] [comments] |
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