🎓 Doc Freemo 🇳🇱 @freemo@qoto.org

Would anyone be interested in me posting a write up, or even a video, of how to do a semi-synthesis of THC from CBD? Its one of the more fun chemistry experiments IMO and can be done from home. Thankfully I'm in a location where it would be legal as well.

#Chemistry #Cannabis #Science

I feel like linear algebra should have a common operation, like transpose, that basically takes a Nx1 or 1xN vector and diagonalizes it (turns it into a NxN vector with the values across the diagonal)

#math #science

I got bored so i wanted to see if we could remember how to represent a multilayer perceptron using linear algebra. I think i summed it up fairly well.

#science #ai #neuralnetworks #programming

Ya know... looking back on the various algorithms I invented I'm not really sure how much of it is luck (trial and error) and how much of it comes from knowledge (math, algorithms, etc)... I have invented a few fairly well used algorithms that are novel and performant that were systematic trial and error in the end and don't resemble my original plans on paper at all. I have others that are a mathematical symphony that just git together well from the first go.

Then again I only create new algorithms when I'm learning new ideas or revisiting them, usually inspired by the thought process it takes for me to understand an idea and apply it in other somewhat abstract ways. So maybe invention is just an extension of learning in a way. Afterall i often find when I am learning I try to predict the next logical step, such as with math. Which is sort of like inventing the idea yourself if you haven't turned the page in the textbook yet to get the answer.

Perhaps the people who are inventors of anything are also the ones who learn through exploration rather than just repetition.

#science

New branch of particle physics maybe... Exciting!

https://www.quantamagazine.org/milestone-evidence-for-anyons-a-third-kingdom-of-particles-20200512/

#QotoJounal #Science #Physics

This

#science

This is kinda a big deal...

https://www.nature.com/articles/s41586-020-2177-0

#Science #QM #quantum #QuantumMechanics #Physics

The six polymorphs of chocolate

#science #chemistry #food #cooking

I have started working on my ROES SWR meter again. Hope to finish the v2 of the project in the next week and get some PCBs printed.

This has been int he making a long time now. Always wanted a super high-tech SWR meter.

#HAM #Engineering #RF #HamRadio #RF #EE #Science #Electronics #Arduino #AVR

Day 16 in quarantine....

Dough, an ingredient, a bread ingredient.

Ray, a graphical vector

Me, a group, a Methyl group

Far, a distance relative

Sow, a thing botanists do

La, is short for Lagrange point

T, we use it to mean time

and that will bring us back to dough dough dough....

#Science #humor #humour #funny #joke #jokes #covid #covid19 #coronavirus

In case you are curious this is what eggs look like when they are still developing inside a chicken.

#science #biology #chickens

YAY! #QOTO just passed 10,000 users today! So awesome. Thank you to all our users and friends it has been an amazing journey so far!

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#mastodon #fediverse #mastoadmin #science #STEM

I feel like its time to upgrade the Transmission Line I use in my shake... Overkill?

https://www.reddit.com/r/nextfuckinglevel/comments/fk1fpo/demonstrating_a_24kv_underground_line_splice/

#ham #HamRadio #AmateureRadio #Radio #RF #Science #Engineering #ElectricalEngineering #EE

So apparently one of my buddies is trying to train a Neural Network to identify if someone is asian or not from a photo of their feet...

Dude has got some serious problems...

Will be interesting to read the paper in the Science journal though, that's for sure :)

#science

Excellent indepth chapter on protein and RNA transcription

http://biology.kenyon.edu/courses/biol114/Chap05/Chapter05.html

#Science #Biology

Every researcher and their grandma is getting in on the COVID-19 craze. Its all over arXiv

#arxiv #covid19 #science

The biggest risk in the coronavirus epidemic in my non-expert opinion is going to be assortment. IF this happens with any of the strains already adapted to infect humans we might really be in trouble...

We already know that Coronaviruses int he wild are capable of recombination...

A good read and somewhat related:

Wong MC, Cregeen SJ, Ajami NJ, Petrosino JF (February 2020). "Evidence of recombination in coronaviruses implicating pangolin origins of nCoV-2019". bioRxiv (preprint). doi:10.1101/2020.02.07.939207.

#coronavirus #COVID #COVID19 #Biology #science

I'm not particularly scared of the Coronavirus.. yes a lot of people will die and it will be a tragedy and I wish it could be avoided, but its not the end of the world, most of us will make it through.

What scares me though is if this thing starts recombinating with the other coronavirus strains, plus there may already be two strains of the one causing the epidemic too.

If this thing start recombinating the problem is never going to go away and vaccines may never be possible. That is a scary though.

https://www.newscientist.com/article/2236544-coronavirus-are-there-two-strains-and-is-one-more-deadly/

#coronavirus #biology #science

Some really nice eye candy showing various quarantining and social distancing techniques and how it effects the spread of a virus.

Worth checking this out even if its just for the animations:

https://www.washingtonpost.com/graphics/2020/world/corona-simulator/

#coronavirus #science #math #maths #mathematics

Some Hard information on #COVID19 as compared to other epidemics in recent history.

==COVID-19==
R0 = 2.2
Global Mortality: 7%
Death Toll = 4,718 (and rising)

== 2009 Swine-flu ==
R0 = 1.5
Global Mortality: 0.04%
Death Toll = 500,000

== 2002 SARS ==
R0 = 3
Global Mortality: 9.6%
Death Toll = 349

== 1920 Spanish Flu ==
R0 = 2
Global Mortality: 2.5%
Death toll = 100 million

For those who don't know R0 is the average number of people who will contract the disease from an infected individual.

As you can see the numbers are very concerning. The only disease that had the same potential for damage as this would have been the SARS epidemic in 2002. Luckily it was contained early on and never spread. The big difference seems to be the 2002 SARS epidemic had very few if any asymptomatic individuals. So it was easy to stop the disease before it spread (artificially lowering the R0 effectively).

However the COVID-19 has a large portion of people with the disease whoa re asymptomatic. This causes the spread to go unhindered. Despite having a lower R0 and lower mortality rate the death toll is already more than 10x what it was for 2002 SARS.

The numbers are scary, it suggests to me, we are in for some really nasty times ahead...

#coronavirus #science #SARS