Viewing profile — aurelwu

Take a look at indoorco2map.com and you will find plenty of places in Germany with bad air measured in a crowd data collection effort. Most notably doctor‘s offices are often very …

(commented this on the other post which gained no traction at all already:) It's good to see more money flowing towards this totally underfunded area. However I think it's an odd c…

It's good to see more money flowing towards this totally underfunded area. However I think it's an odd choice of them to focus on filtration, UV-inactivation and other things and a…

Anyone can already buy those certificates - but as its an artificial market where rules can be changed politically it's actually way more resistant to such things than regular mark…

I do think even the most amateur of amateurs would be able to recognize instantly that a chess board with 64 pieces on it is a invalid game state.

you can get a ESP32 and a CO2-Sensor, easiest would be to use a development kit like a m5-stickC and the Sensirion SCD41 and with some small arduino scripts you are good to go to s…

Hi, I developed indoorco2map.com which is a an app-supported crowd-data-science project where users can submit CO2-Data they measure when going shopping or to restaurants or wherev…

I built IndoorCo2map.com and the accompanying (open source, MIT licensed) App with the goal to create a large free dataset about CO2 levels in public accessible Buildings and publi…

I don't know if it's been the first time in fiction where that concept was described but in Heinleins "The Moon is a harsh Mistress" this was what the Moon Colonists did.

Some non-orthodox chess variants have a piece which combines Queen+Knight: https://en.wikipedia.org/wiki/Amazon_(chess) very old variants often had such compound pieces like for ex…

21 reactors under construction even with a short build time of 7 years is just 3 finished per year, and with China having ~15x the population of Germany that would amount to 0,2 re…

Business associations do however.

the lines are what shows the energy amount, the boxes have a minimal size for readability and are acting as the legend of the chart.

end-of-life Battery usage will compete with recycling them and especially as material needed per kWh is going to keep going down it might be more economical to recycle them into a …

twitter policy talks about private information, but they seem to also take issue with public information (which is made somewhat more accessible if put into a tweet but still was p…

it's rather strange they suggest red-green as an alternative given that this combination is affected by the most common form of color-weakness/blindness.

air conditioning is one of the smallest issues (somewhat ironically), as the demand from it is the highest when sun is shining, meaning there is lots of PV Electricity available (a…

so what you are saying is that there is a market for a drone which recharges wireless security cameras?

The upper value of 12acres/hr for $150/hr translates into $12,5/acre, which isn't too far off for an emerging technology if the value is accurate.

https://unfccc.int/sites/default/files/resource/28_EASAC%20R... This document from EASAC (European Academies' Science Advisory Council) is a pretty nice and well sourced overview o…

Direct reduction of iron ore with Hydrogen can eliminate most of the process emissions of smelting: https://en.wikipedia.org/wiki/Direct_reduced_iron . Production of secondary stee…

Great work, a friend of mine is molecular biologist and she is furious about how in germany they don't use alternative methods for RNA Extraction like Phenol/Chloroform (labor inte…

The statement from the hospital management boggles my mind: "In addition, there are different parts to a patient bill. One part is what the hospital charges the insurance company, …

China has a flu every year, their reaction to the current outbreak is vastly different from a flu. That suggests that they consider it a bigger threat than the flu.

iron seeding can increase amount of cyanobacteria which recently have been identified as potentially being methanogenic, thus this might not be a good idea. Unintended side effects…