Why is COVID-19 so serious in some people but not in others? Updated 2025-07-16
There are a few possibilities:
- genetics
- bibliography:
- www.science.org/doi/10.1126/scitranslmed.abj7521 Identification of driver genes for critical forms of COVID-19 in a deeply phenotyped young patient cohort by Carapito et al. (2021)
- bibliography:
- state of the immune system based on disease history
- age
Positive definite matrix Updated 2025-07-16
The dot product is a positive definite matrix, and so we see that those will have an important link to familiar geometry.
Pythagorean triple Updated 2025-07-16
Tearjerker Updated 2025-07-16
Why is COVID-19 more serious than the flu? Updated 2025-07-16
csvtool Updated 2025-07-16
A compiled executable under
/usr/bin/csvtool
, has an Ubuntu 23.04 package: manpages.ubuntu.com/manpages/lunar/en/man1/csvtool.1.htmlThere seems to be no sane filtering mechanism however: stackoverflow.com/questions/46540752/using-csvtool-call-to-filter-csv-in-bash
Electronvolt Updated 2025-07-16
Filter (signal processing) Updated 2025-07-16
Homeobox gene Updated 2025-07-16
Intermediate filaments Updated 2025-07-16
Linux Unified Key Setup Updated 2025-07-16
Alpha decay Updated 2025-07-16
Most of the helium in the Earth's atmosphere comes from alpha decay, since helium is lighter than air and naturally escapes out out of the atmosphere.
Wiki mentions that alpha decay is well modelled as a quantum tunnelling event, see also Geiger-Nuttall law.
As a result of that law, alpha particles have relatively little energy variation around 5 MeV or a speed of about 5% of the speed of light for any element, because the energy is inversely exponentially proportional to half-life. This is because:
Quantum tunnelling and the Alpha particle Paradox by Physics Explained (2022)
Source. - youtu.be/_f8zeEI0oys?t=796 George Gamow and Edward Condon proposed the quantum tunnelling explanation
- youtu.be/_f8zeEI0oys?t=1725 worked out example that predicts the half-life of polonium-210 based on its emission energy
AlphaGo Zero Updated 2025-07-16
AlphaGo Zero cheat sheet by David Foster (2017)
Source. Alpha Investments Updated 2025-07-16
Very good channel that gives some idea of the behind the scenes of working with card stores and secondary market trading.
Such lessons can have applicability in business and investment outside of the Magic The Gathering context as well. Yet another example that usefulness can come out of uselessness.
AlphaPhoenix Updated 2025-07-16
www.youtube.com/watch?v=qiMR6yAFfyA He obtained PhD from UCSB in Materials, exploring, among other things, growth of a semiconductor called lead selenide.
Firmware Updated 2025-07-16
Fujitsu Updated 2025-07-16
The japanese name literally means:
- 富士 fushi, from Mount Fuji, which itself has unknown origin
- 通 tong: telecommunications
Knowledge graph Updated 2025-07-16
Many people believe that knowledge graphs are a key element of AGI: Knowledge graph as a component of AGI.
Bibligraphy:
Quantum Mechanics for Engineers by Leon van Dommelen (2011) Updated 2025-07-16
Looks very impressive! Last update marked 2011 as of 2020.
Goes up to "A.15 quantum field theory in a Nanoshell", Ciro have to review it to see if there's anything worthwhile in that section.
Personal page says he retired as of 2020: www.eng.fsu.edu/~dommelen/ But hopefully he has more time for these notes!
And he appears to have his own lightweight markup language that transpiles to LaTeX called l2h: www.eng.fsu.edu/~dommelen/l2h/
There are unlisted articles, also show them or only show them.