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Cake day: June 13th, 2023

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  • Linnce@lemmy.worldtoMicroblog Memes@lemmy.worldOldie but a goldie
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    3 months ago

    I had to present this paper for a fluid mechanics class during COVID and yes, the particles do spread. The radius of contamination was almost 1,5m.

    Shared bathrooms in hospitals, rehabilitation centers, or assisted living facilities are used by patients who might be infected, thus making them a likely source of indoor cross-contamination. The pathogen-spreading potential of toilet flushes was investigated in toilets seeded with microorganisms that were later recovered from surfaces and in the air after flushing. The organisms in the bowl could not be fully cleared even after repeated flushing, and the droplets produced by flushing harbored the organisms that were used for seeding, which remained airborne and viable.

    Recently, Johnson et al. (2013a) investigated different toilet designs and found that up to 145,000 sampled particles can be produced per flush.

    Analysis of more recent data revealed that a large number of droplet emissions are not visible to the naked eye (d < 100 µm) (Figure 6b). These emissions account for more than 6 mL and can remain suspended in the air for a long time compared to the larger visible drops (with diameters up to 6 mm) that end up on surfaces.

    The larger visible drops settle on surfaces within milliseconds, whereas the smaller, invisible drops are advected by local airflow (on the order of a few centimeters per second). Droplets settling on surfaces can be tackled in accordance with surface decontamination procedures of local infection control protocols. However, no system or protocol currently addresses air contamination. Furthermore, usual cleaning solutions not effective in neutralizing the most resistant pathogens, such as the spores of C. difficile, may even contribute to their dissemination by effectively lowering the surface tension, for example, down to 30 mN/m, compared to water at 72 mN/m, increasing the local Weber number and thus promoting fragmentation into either more or smaller droplets, depending on the fragmentation mechanism.

    https://www.annualreviews.org/content/journals/10.1146/annurev-fluid-060220-113712


  • Earlier this year, Moraes ordered X to block certain accounts, as he investigates so-called “digital militias” that have been accused of spreading fake news and hate messages during the government of far-right former President Jair Bolsonaro.

    These people are the equivalent of Trump’s cult followers, although I’m not on Twitter myself I am sure they are spreading fake news and any fight against it is a win in my point of view. I myself see these Bolsonaro lovers all the time and it’s crazy how they are brainwashed. I know plenty of people who didn’t take the COVID vaccine because of him.



  • Linnce@lemmy.worldtoMicroblog Memes@lemmy.worldSorry hun
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    3 months ago

    I wish my parents did this. I have such a mental block on cursing that I can’t bring myself to say it out loud, even though I’m thinking about it and it’s the perfect choice of words for the moment. I also feel socially left out by people around me because of that, as in they can be themselves and I have to restrain myself.

    Funny enough this is only in my native language. Since I grew up watching YouTube videos from english speaking people that cursed a lot, that feels very comfortable and natural.

    The other day I was rewatching some adventure time on hbo max and saw they were censoring the word idiot. I’m pretty sure they were censoring a bunch of other cartoons that weren’t censored back in the day. That pissed me off so much, they are just limiting our vocabulary more and more for words that have a somewhat negative connotation.