Moved here from lemmy.world. Long live piracy!

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Cake day: August 16th, 2023

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  • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8901252/

    It is difficult to provide a valid estimation of real frequency. There are only a few own observations in the literature and a lot of citations.

    We performed a search in our radiologic database, looking for situs inversus as key words in the results. Between 2006 and 2020, 217,646 imaging examinations (ultrasound, CT and plain radiography) were performed at the Department of Transplantation and Surgery, Semmelweis University. Out of them, 21 cases were found, which represents a 1:10,000 frequency. This hospital-based prevalence rate best reflects Adams et al in 1937 (23:232,113), and Lin et al in 2000 (20:201,084) from Massachusetts, as data from own observations.26 This rate is similar as well to the population-based Baltimore-Washington Infant Study.12 SIT is slightly more frequent in males: 1.5:1.27

    https://www.healthline.com/health/situs-inversus#symptoms

    Because the condition seldom causes symptoms and is so rare, a person may not know they have it. And it may not be discovered until visiting a doctor for a different reason.

    https://my.clevelandclinic.org/health/diseases/23486-situs-inversus

    You may not develop any symptoms with situs inversus. Although your organs are reversed, they’re often still functional. So you wouldn’t notice any signs or complications.

    Of course, trying to estimate how many people don’t know about a disease is a difficult task, but the general consensus is the condition is rare and often doesn’t produce any symptoms, as such there are definitely many people with the condition that haven’t even ever heard of it.


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    5 months ago

    In fact many of them don’t, since the body is mostly symmetrical and apart from cutting them open or doing an MRI, you can’t really tell (which isn’t a big deal in most cases, because most medical procedures work regardless of this condition). Also, the heart is located almost in the middle, so there is not much difference.


  • Except the first assumption that e^x = its own integral, everything else actually makes sense (except the DX are in the wrong powers). You simply treat the “1” and “integral dx” as operators, formally functions from R^R into R^R and “(0)” as calculating the value of the operator on a constant-valued function 0. EDIT: the step 1/(1-integral) = the limit of a certain series is slightly dubious, but I believe it can be formally proven as well. EDIT 2: I was proven wrong, read the comments










  • Niche? Are you a lunatic? The 3D printing industry is one of the fastest growing fields in the world. 3D printing is getting cheaper and cheaper compared to eg. CNC machining. The industry is a very important one, because it allows you to create accurate parts much more quickly that to drill a block of metal. And all this not even mentioning that this required mostly general computer science skill, I hope you won’t call the computer science field niche?