Machine go brrrrrrr brrrrrrrrrrr br br br br br br brbrbrbrb

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• Hirom@beehaw.org ⁨22⁩ ⁨minutes⁩ ago

  Antimatter remind me of this Fringe scene: www.youtube.com/watch?v=XdoO5tCCOms

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• alzymologist@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

  I remember my senior advisor student tellimg me a story how she went to industrial lab internship in a hospital with these things.

  They had their own little collider there. They made synthetic radioactive cocaine to study something in the brain.

  They didn’t measure the drug dosage, they just filled the syringe and waited holding it near a radiation counter for radiation to drop to desired level.

  Once she spilled something and dipped her hand in it. She was told to hold a hand away rfom the body for a day - on a train ride home, in shower, in sleep - to protect internal organs. Next day, radiation was gone, down to natural level.

  These things are amazing.

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  • Tomassci@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

    “synthetic radioactive cocaine” is a hell of a phrase.

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    • Bronzebeard@lemmy.zip ⁨1⁩ ⁨day⁩ ago

      It’s pretty rad.

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    • SaveTheTuaHawk@lemmy.ca ⁨1⁩ ⁨day⁩ ago

      Many drugs are made as radiochemicals to see how they distribute in the body. It’s mostly the liver. Some drugs work specifically as radiochemicals to bring ionizing radiation to tumors to kill them.

      fusionpharma.com/targeted-alpha-therapeutics/

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    • Blaster_M@lemmy.world ⁨1⁩ ⁨day⁩ ago

      new band name

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    • MutantTailThing@lemmy.world ⁨1⁩ ⁨day⁩ ago

      No cheap ass crack for me. I splurge for the good stuff.

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    • Viking_Hippie@lemmy.dbzer0.com ⁨1⁩ ⁨day⁩ ago

      Would also make for a hell of a band name if not for the first two words sounding clunky together 🤔

      Nuked coke, illegitimate?
      Irradiated faux-coke?
      Nuked Fauxke? 🤷

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  • janus2@lemmy.zip ⁨1⁩ ⁨day⁩ ago

    That liquid must have had a hell of an ability to be absorbed into skin if she wasn’t able to remove the contamination by just washing her hand.

    The fact that they let her leave the controlled area makes me think the activity was low enough that holding her hand away from her was probably overkill. If you’re contaminated enough that it’s a risk to your organs, most radiation safety officers aren’t going to let you leave the controlled area lol

    At the radiopharm manufactory I used to work at, we had a guy accidentally inject his finger with the QC sample. Fortunately it was low enough activity that he was able to leave by the end of his shift. It was really stupid that the QC sample syringe was capped with a needle instead of a blunt syringe cap, but changing the manufacturing protocol to allow capping with a new type of device would have required FDA oversight.

    The first thing I always did during my QC testing was remove the needle entirely, fuuuuck that.

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    • Droggelbecher@lemmy.world ⁨21⁩ ⁨hours⁩ ago

      I’m sometimes slightly radioactive for medical reasons. Most people will be fine with a certain dosis, but little kids and pregnant people (well, their foetus) won’t. So they tell you to stay away from people because you don’t know who’s pregnant. Maybe that contributes.

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    • Aqarius@lemmy.world ⁨14⁩ ⁨hours⁩ ago

      I kinda wonder if it was a “Tell her to keep her arm raised until tomorrow, it’ll teach her to be more careful next time.” situation.

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    • MehBlah@lemmy.world ⁨12⁩ ⁨hours⁩ ago

      I once spent several hours stuck in decon on a reactor shutdown because I had breathed in … Its been thrity years… I think boron gas from the reactor. It had a short half life measured in seconds but I got enough dose that it took a while for it to drop down low enough for me to be passed by the machine. Nothing to do in decon but stand around. No restrooms, food or water. No chairs either. It could have been worse. One guy got a hot particle on them. A microscopic piece of fuel rod. It finally ended up his nethers and they used duct tape pull it off. Hair and all. He left in a set of scrubs with his boots and everything else taken.

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    • alzymologist@sopuli.xyz ⁨22⁩ ⁨hours⁩ ago

      Oh, I forgot to mention that my story was happening in Moscow. Radiation safety rules there are… unusual. You get slapped for handling a thorium chunk in an explicitly hot environmental lab outside of fume hood, then dump ion exchange resin flush down the drain. You get strict access control in Kurchatov institute with weeks prior to entry to submit documents just to get to a meeting room, but then the same area has radioactive waste dumped between the trees in forested area (yes, it’s in center of the city with many times more people than my whole country).

      And then it’s regular ALARA. For that girl, that is, screw them those bystanders on the train. Clearly the fancy hospital with all that gear was one of those damned places where government and oligarchs get patched up and regular people are only experimental test samples, and they made no secret out of that.

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• agent_nycto@lemmy.world ⁨14⁩ ⁨hours⁩ ago

  Can someone ELIF this for me?

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  • janus2@lemmy.zip ⁨12⁩ ⁨hours⁩ ago

    Some atoms don’t like being the way they are (mood tbh), and we call them unstable. Some unstable atoms spit out something called a positron in order to become the atom they want to be.

    A positron is an anti-electron, and when it collides with an electron (easy since those are everywhere) they annihilate each other, turning into a bunch of energy in the process, in the form of gamma radiation. The gamma radiation from annihilation is special because it always comes out as two rays going in the opposite direction from each other.

    That means, if you can detect when those two rays hit a ring that encircles the point of annihilation, you can use math to figure out where that point is in the ring. That’s because you know the speed of the rays and the difference in the times that both rays struck the ring.

    The aforementioned ring is a PET scanner’s detector array. (The machine at the bottom of this meme is a PET scanner.) So if you put a living thing in the PET scanner that has eaten or been injected with something that is undergoing positron emission, you can tell where in their body the position emission is happening.

    This is useful because you can use chemistry to attach something that emits positions to something that a body will move to specific locations based on what it is. For example, if you want to find cancer cells: they absorb way more glucose than normal cells. So you can attach unstable fluorines to glucose molecules and inject them into a cancer patient to find the cancer.

    Wherever you see way more positron emission happening than normal, that’s where the glucose is going. So if we know cancer cells are absorbing glucose at an abnormal rate, now we know where in the body the cancer is.

    (That’s more or less how I explained my previous job to my 4-year old niece, but with more drawings and smaller words.)

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    • agent_nycto@lemmy.world ⁨6⁩ ⁨hours⁩ ago

      Dang that’s rad as hell I had no idea, thanks!

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    • Krzd@lemmy.world ⁨11⁩ ⁨hours⁩ ago

      That’s actually such a great explanation, thank you!

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• Evil_Shrubbery@thelemmy.club ⁨13⁩ ⁨hours⁩ ago

  Which Enterprise is that?

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• First_Thunder@lemmy.zip ⁨1⁩ ⁨day⁩ ago

  Referring to PET I suppose?

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  • PostsFromWikipedia@piefed.blahaj.zone ⁨1⁩ ⁨day⁩ ago

    PSA:

    PET is a common imaging technique, a medical scintillography technique used in nuclear medicine. A radiopharmaceutical—a radioisotope attached to a drug—is injected into the body as a tracer. When the radiopharmaceutical undergoes beta plus decay, a positron is emitted, and when the positron interacts with an ordinary electron, the two particles annihilate and two gamma rays are emitted in opposite directions.^[6] These gamma rays are detected by two gamma cameras to form a three-dimensional image.

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  • call_me_xale@lemmy.zip ⁨1⁩ ⁨day⁩ ago

    It fucking blew my mind when I realized what the “P” in that acronym stood for.

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    • captainlezbian@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Wait is it fucking positron‽

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    • Scolding7300@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Penis?

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  • ryedaft@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

    Are there other antimatter imaging methods?

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    • Gust@piefed.social ⁨1⁩ ⁨day⁩ ago

      Pedantically, I think you could call muon tomography an antimatter imaging method. It doesnt explicitly use antimatter as a probe, but you do often measure products of antimatter decay or decay products that are antimatter themselves when doing it (depending on how much fidelity you need on the structure being imaged). I say pedantically because I assume you meant medical imaging methods and muon tomography doesnt have medical applications afaik

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    • justme@lemmy.dbzer0.com ⁨1⁩ ⁨day⁩ ago

      www.frontiersin.org/journals/physics/…/full (I didn’t read the article, I just remembered that this was under consideration)

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• somerandomperson@lemmy.dbzer0.com ⁨18⁩ ⁨hours⁩ ago

  :(

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