home.social

#piv — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #piv, aggregated by home.social.

  1. #FluidImage our suite for #PIV and other image algorithms in the #FluidDynamics world is at the end of the review process and will join the ranks of accepted packages by @pyOpenSci anytime soon.

  2. CW: Gender dysphoria; gatekeeping; lack of gender-affirming healthcare for trans+ folks; NHS England bullshit; possible inability to enjoy others' gender euphoria any more 😔

    We don't have the spoons for a detailed post. We've written other posts recently giving updates on some of our struggles, but we needed to get the thoughts out of our head before sleep tonight 🥺😔

    We're realistically facing a situation very soon where we'll officially be told that we're not going to get any gender-affirming surgeries from NHS England whatsoever, making the last nearly 5 years of trying to progress through this dehumanising, anxiety-inducing, decorating, belittling, gatekeeping, outdated process completely worthless :Sighing_Face:

    We already had to accept we could never get FFS.

    We tried twice to convince them to give us VFS, but they said no, and gave us no actual further voice training help.

    We knew that trying to get PPT vaginoplasty would be a longshot, but we never expected:

    • to have PPT basically badmouthed during a consultation;
    • to hear basic PIV or scrotal flap techniques described as the "gold standard" (!!!) for genital reconfiguration surgery (GRS);
    • to be told that the only surgeon who'd see us is one we'd never, ever trust or want anywhere near us, especially after having specifically requested another surgeon (the only one we'd trust in the UK for GRS); and
    • that we'd need to go back begging to our gender clinic -- which no longer responds to our emails at all -- to try to convince them to submit a funding request for a basic standalone bilateral orchidectomy and scrotectomy... which would have been required anyway as part of PIV or vulvoplasty!!!

    We've reached the point where we don't think we can get any joy from seeing other trans+ folks' joy and euphoria from making progress in their own transitions, particularly surgeries, as we can't help but feel so painfully sad crushingly jealous and upset that we cannot get even the most basic care after waiting even longer 😔

    And nope: we've zero chance of being able to ever even fund the cheapest of surgeries privately.

    Apologies for the sad dump. We needed to write it all out to have any chance at getting to sleep soon :BlobCatSad:

    #EOEGS #NHS #NHSEngland #FuckTheNHS #FuckEngland #FuckTheUK #GenderAffirmingSurgery #GenderAffirmingHealthcare #gatekeeping #trans #transgender #NonBinary #TransFem #GRS #GenderDysphoria #transition #PPT #PIV #FFS #VFS #orchidectomy #FML #queer #LGBTQ+ #LGBTQIA+ #LackOfTransJoy

  3. CW: Gender dysphoria; gatekeeping; lack of gender-affirming healthcare for trans+ folks; NHS England bullshit; possible inability to enjoy others' gender euphoria any more 😔

    We don't have the spoons for a detailed post. We've written other posts recently giving updates on some of our struggles, but we needed to get the thoughts out of our head before sleep tonight 🥺😔

    We're realistically facing a situation very soon where we'll officially be told that we're not going to get any gender-affirming surgeries from NHS England whatsoever, making the last nearly 5 years of trying to progress through this dehumanising, anxiety-inducing, decorating, belittling, gatekeeping, outdated process completely worthless :Sighing_Face:

    We already had to accept we could never get FFS.

    We tried twice to convince them to give us VFS, but they said no, and gave us no actual further voice training help.

    We knew that trying to get PPT vaginoplasty would be a longshot, but we never expected:

    • to have PPT basically badmouthed during a consultation;
    • to hear basic PIV or scrotal flap techniques described as the "gold standard" (!!!) for genital reconfiguration surgery (GRS);
    • to be told that the only surgeon who'd see us is one we'd never, ever trust or want anywhere near us, especially after having specifically requested another surgeon (the only one we'd trust in the UK for GRS); and
    • that we'd need to go back begging to our gender clinic -- which no longer responds to our emails at all -- to try to convince them to submit a funding request for a basic standalone bilateral orchidectomy and scrotectomy... which would have been required anyway as part of PIV or vulvoplasty!!!

    We've reached the point where we don't think we can get any joy from seeing other trans+ folks' joy and euphoria from making progress in their own transitions, particularly surgeries, as we can't help but feel so painfully sad crushingly jealous and upset that we cannot get even the most basic care after waiting even longer 😔

    And nope: we've zero chance of being able to ever even fund the cheapest of surgeries privately.

    Apologies for the sad dump. We needed to write it all out to have any chance at getting to sleep soon :BlobCatSad:

    #EOEGS #NHS #NHSEngland #FuckTheNHS #FuckEngland #FuckTheUK #GenderAffirmingSurgery #GenderAffirmingHealthcare #gatekeeping #trans #transgender #NonBinary #TransFem #GRS #GenderDysphoria #transition #PPT #PIV #FFS #VFS #orchidectomy #FML #queer #LGBTQ+ #LGBTQIA+ #LackOfTransJoy

  4. CW: Gender dysphoria; gatekeeping; lack of gender-affirming healthcare for trans+ folks; NHS England bullshit; possible inability to enjoy others' gender euphoria any more 😔

    We don't have the spoons for a detailed post. We've written other posts recently giving updates on some of our struggles, but we needed to get the thoughts out of our head before sleep tonight 🥺😔

    We're realistically facing a situation very soon where we'll officially be told that we're not going to get any gender-affirming surgeries from NHS England whatsoever, making the last nearly 5 years of trying to progress through this dehumanising, anxiety-inducing, decorating, belittling, gatekeeping, outdated process completely worthless :Sighing_Face:

    We already had to accept we could never get FFS.

    We tried twice to convince them to give us VFS, but they said no, and gave us no actual further voice training help.

    We knew that trying to get PPT vaginoplasty would be a longshot, but we never expected:

    • to have PPT basically badmouthed during a consultation;
    • to hear basic PIV or scrotal flap techniques described as the "gold standard" (!!!) for genital reconfiguration surgery (GRS);
    • to be told that the only surgeon who'd see us is one we'd never, ever trust or want anywhere near us, especially after having specifically requested another surgeon (the only one we'd trust in the UK for GRS); and
    • that we'd need to go back begging to our gender clinic -- which no longer responds to our emails at all -- to try to convince them to submit a funding request for a basic standalone bilateral orchidectomy and scrotectomy... which would have been required anyway as part of PIV or vulvoplasty!!!

    We've reached the point where we don't think we can get any joy from seeing other trans+ folks' joy and euphoria from making progress in their own transitions, particularly surgeries, as we can't help but feel so painfully sad crushingly jealous and upset that we cannot get even the most basic care after waiting even longer 😔

    And nope: we've zero chance of being able to ever even fund the cheapest of surgeries privately.

    Apologies for the sad dump. We needed to write it all out to have any chance at getting to sleep soon :BlobCatSad:

    #EOEGS #NHS #NHSEngland #FuckTheNHS #FuckEngland #FuckTheUK #GenderAffirmingSurgery #GenderAffirmingHealthcare #gatekeeping #trans #transgender #NonBinary #TransFem #GRS #GenderDysphoria #transition #PPT #PIV #FFS #VFS #orchidectomy #FML #queer #LGBTQ+ #LGBTQIA+ #LackOfTransJoy

  5. CW: Gender dysphoria; gatekeeping; lack of gender-affirming healthcare for trans+ folks; NHS England bullshit; possible inability to enjoy others' gender euphoria any more 😔

    We don't have the spoons for a detailed post. We've written other posts recently giving updates on some of our struggles, but we needed to get the thoughts out of our head before sleep tonight 🥺😔

    We're realistically facing a situation very soon where we'll officially be told that we're not going to get any gender-affirming surgeries from NHS England whatsoever, making the last nearly 5 years of trying to progress through this dehumanising, anxiety-inducing, decorating, belittling, gatekeeping, outdated process completely worthless :Sighing_Face:

    We already had to accept we could never get FFS.

    We tried twice to convince them to give us VFS, but they said no, and gave us no actual further voice training help.

    We knew that trying to get PPT vaginoplasty would be a longshot, but we never expected:

    • to have PPT basically badmouthed during a consultation;
    • to hear basic PIV or scrotal flap techniques described as the "gold standard" (!!!) for genital reconfiguration surgery (GRS);
    • to be told that the only surgeon who'd see us is one we'd never, ever trust or want anywhere near us, especially after having specifically requested another surgeon (the only one we'd trust in the UK for GRS); and
    • that we'd need to go back begging to our gender clinic -- which no longer responds to our emails at all -- to try to convince them to submit a funding request for a basic standalone bilateral orchidectomy and scrotectomy... which would have been required anyway as part of PIV or vulvoplasty!!!

    We've reached the point where we don't think we can get any joy from seeing other trans+ folks' joy and euphoria from making progress in their own transitions, particularly surgeries, as we can't help but feel so painfully sad crushingly jealous and upset that we cannot get even the most basic care after waiting even longer 😔

    And nope: we've zero chance of being able to ever even fund the cheapest of surgeries privately.

    Apologies for the sad dump. We needed to write it all out to have any chance at getting to sleep soon :BlobCatSad:

    #EOEGS #NHS #NHSEngland #FuckTheNHS #FuckEngland #FuckTheUK #GenderAffirmingSurgery #GenderAffirmingHealthcare #gatekeeping #trans #transgender #NonBinary #TransFem #GRS #GenderDysphoria #transition #PPT #PIV #FFS #VFS #orchidectomy #FML #queer #LGBTQ+ #LGBTQIA+ #LackOfTransJoy

  6. CW: Gender dysphoria; gatekeeping; lack of gender-affirming healthcare for trans+ folks; NHS England bullshit; possible inability to enjoy others' gender euphoria any more 😔

    We don't have the spoons for a detailed post. We've written other posts recently giving updates on some of our struggles, but we needed to get the thoughts out of our head before sleep tonight 🥺😔

    We're realistically facing a situation very soon where we'll officially be told that we're not going to get any gender-affirming surgeries from NHS England whatsoever, making the last nearly 5 years of trying to progress through this dehumanising, anxiety-inducing, decorating, belittling, gatekeeping, outdated process completely worthless :Sighing_Face:

    We already had to accept we could never get FFS.

    We tried twice to convince them to give us VFS, but they said no, and gave us no actual further voice training help.

    We knew that trying to get PPT vaginoplasty would be a longshot, but we never expected:

    • to have PPT basically badmouthed during a consultation;
    • to hear basic PIV or scrotal flap techniques described as the "gold standard" (!!!) for genital reconfiguration surgery (GRS);
    • to be told that the only surgeon who'd see us is one we'd never, ever trust or want anywhere near us, especially after having specifically requested another surgeon (the only one we'd trust in the UK for GRS); and
    • that we'd need to go back begging to our gender clinic -- which no longer responds to our emails at all -- to try to convince them to submit a funding request for a basic standalone bilateral orchidectomy and scrotectomy... which would have been required anyway as part of PIV or vulvoplasty!!!

    We've reached the point where we don't think we can get any joy from seeing other trans+ folks' joy and euphoria from making progress in their own transitions, particularly surgeries, as we can't help but feel so painfully sad crushingly jealous and upset that we cannot get even the most basic care after waiting even longer 😔

    And nope: we've zero chance of being able to ever even fund the cheapest of surgeries privately.

    Apologies for the sad dump. We needed to write it all out to have any chance at getting to sleep soon :BlobCatSad:

    #EOEGS #NHS #NHSEngland #FuckTheNHS #FuckEngland #FuckTheUK #GenderAffirmingSurgery #GenderAffirmingHealthcare #gatekeeping #trans #transgender #NonBinary #TransFem #GRS #GenderDysphoria #transition #PPT #PIV #FFS #VFS #orchidectomy #FML #queer #LGBTQ+ #LGBTQIA+ #LackOfTransJoy

  7. Circulation in a Capillary Network

    Today’s video shows red blood cells flowing through a capillary network in a rat’s skeletal muscle. At this resolution, our eyes can follow the paths of individual red blood cells squeezing through each capillary, as well as the faster blur of thicker capillaries where many cells can pass at once. Watching videos like this is a great way to build intuition for particle image velocimetry, streaklines, and other flow visualization methods as our brains can readily recognize where the cells are moving fast and where they are slower. (Video and image credit: Dr. G. McEvoy et al.; via Colossal)

    https://www.youtube.com/watch?v=dO8P9Qzhv2s&pp=0gcJCfYJAYcqIYzv

    #biology #bloodFlow #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  8. Circulation in a Capillary Network

    Today’s video shows red blood cells flowing through a capillary network in a rat’s skeletal muscle. At this resolution, our eyes can follow the paths of individual red blood cells squeezing through each capillary, as well as the faster blur of thicker capillaries where many cells can pass at once. Watching videos like this is a great way to build intuition for particle image velocimetry, streaklines, and other flow visualization methods as our brains can readily recognize where the cells are moving fast and where they are slower. (Video and image credit: Dr. G. McEvoy et al.; via Colossal)

    https://www.youtube.com/watch?v=dO8P9Qzhv2s&pp=0gcJCfYJAYcqIYzv

    #biology #bloodFlow #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  9. Circulation in a Capillary Network

    Today’s video shows red blood cells flowing through a capillary network in a rat’s skeletal muscle. At this resolution, our eyes can follow the paths of individual red blood cells squeezing through each capillary, as well as the faster blur of thicker capillaries where many cells can pass at once. Watching videos like this is a great way to build intuition for particle image velocimetry, streaklines, and other flow visualization methods as our brains can readily recognize where the cells are moving fast and where they are slower. (Video and image credit: Dr. G. McEvoy et al.; via Colossal)

    https://www.youtube.com/watch?v=dO8P9Qzhv2s&pp=0gcJCfYJAYcqIYzv

    #biology #bloodFlow #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  10. Circulation in a Capillary Network

    Today’s video shows red blood cells flowing through a capillary network in a rat’s skeletal muscle. At this resolution, our eyes can follow the paths of individual red blood cells squeezing through each capillary, as well as the faster blur of thicker capillaries where many cells can pass at once. Watching videos like this is a great way to build intuition for particle image velocimetry, streaklines, and other flow visualization methods as our brains can readily recognize where the cells are moving fast and where they are slower. (Video and image credit: Dr. G. McEvoy et al.; via Colossal)

    https://www.youtube.com/watch?v=dO8P9Qzhv2s&pp=0gcJCfYJAYcqIYzv

    #biology #bloodFlow #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  11. Circulation in a Capillary Network

    Today’s video shows red blood cells flowing through a capillary network in a rat’s skeletal muscle. At this resolution, our eyes can follow the paths of individual red blood cells squeezing through each capillary, as well as the faster blur of thicker capillaries where many cells can pass at once. Watching videos like this is a great way to build intuition for particle image velocimetry, streaklines, and other flow visualization methods as our brains can readily recognize where the cells are moving fast and where they are slower. (Video and image credit: Dr. G. McEvoy et al.; via Colossal)

    https://www.youtube.com/watch?v=dO8P9Qzhv2s&pp=0gcJCfYJAYcqIYzv

    #biology #bloodFlow #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  12. Biodegradable PIV Particles

    Particle image velocimetry–PIV, for short–is used to visualize fluid flows. The technique introduces small, neutrally-buoyant particles into the flow and illuminates them with laser light. By comparing images of the illuminated particles, computer algorithms can work out the velocity (and other variables) of a flow. Typical methods use hollow glass spheres or polystyrene beads as the particles that follow the flow, but these options have many downsides. They’re expensive–as much as $200/pound–and they can potentially harm test subjects, like animals whose swimming researchers are studying. Instead, researchers are now looking at biodegradable options for PIV particles.

    One study found that corn and arrowroot starches were good candidates, at least for applications using artificial seawater. The powders were close to neutrally-buoyant, had uniform particle sizes, and accurately captured the flow around an airfoil, live brine shrimp, and free-swimming moon jellyfish. (Image credit: M. Kovalets; research credit: Y. Su et al.; via Ars Technica)

    #biology #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  13. Biodegradable PIV Particles

    Particle image velocimetry–PIV, for short–is used to visualize fluid flows. The technique introduces small, neutrally-buoyant particles into the flow and illuminates them with laser light. By comparing images of the illuminated particles, computer algorithms can work out the velocity (and other variables) of a flow. Typical methods use hollow glass spheres or polystyrene beads as the particles that follow the flow, but these options have many downsides. They’re expensive–as much as $200/pound–and they can potentially harm test subjects, like animals whose swimming researchers are studying. Instead, researchers are now looking at biodegradable options for PIV particles.

    One study found that corn and arrowroot starches were good candidates, at least for applications using artificial seawater. The powders were close to neutrally-buoyant, had uniform particle sizes, and accurately captured the flow around an airfoil, live brine shrimp, and free-swimming moon jellyfish. (Image credit: M. Kovalets; research credit: Y. Su et al.; via Ars Technica)

    #biology #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  14. Biodegradable PIV Particles

    Particle image velocimetry–PIV, for short–is used to visualize fluid flows. The technique introduces small, neutrally-buoyant particles into the flow and illuminates them with laser light. By comparing images of the illuminated particles, computer algorithms can work out the velocity (and other variables) of a flow. Typical methods use hollow glass spheres or polystyrene beads as the particles that follow the flow, but these options have many downsides. They’re expensive–as much as $200/pound–and they can potentially harm test subjects, like animals whose swimming researchers are studying. Instead, researchers are now looking at biodegradable options for PIV particles.

    One study found that corn and arrowroot starches were good candidates, at least for applications using artificial seawater. The powders were close to neutrally-buoyant, had uniform particle sizes, and accurately captured the flow around an airfoil, live brine shrimp, and free-swimming moon jellyfish. (Image credit: M. Kovalets; research credit: Y. Su et al.; via Ars Technica)

    #biology #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  15. Biodegradable PIV Particles

    Particle image velocimetry–PIV, for short–is used to visualize fluid flows. The technique introduces small, neutrally-buoyant particles into the flow and illuminates them with laser light. By comparing images of the illuminated particles, computer algorithms can work out the velocity (and other variables) of a flow. Typical methods use hollow glass spheres or polystyrene beads as the particles that follow the flow, but these options have many downsides. They’re expensive–as much as $200/pound–and they can potentially harm test subjects, like animals whose swimming researchers are studying. Instead, researchers are now looking at biodegradable options for PIV particles.

    One study found that corn and arrowroot starches were good candidates, at least for applications using artificial seawater. The powders were close to neutrally-buoyant, had uniform particle sizes, and accurately captured the flow around an airfoil, live brine shrimp, and free-swimming moon jellyfish. (Image credit: M. Kovalets; research credit: Y. Su et al.; via Ars Technica)

    #biology #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  16. Biodegradable PIV Particles

    Particle image velocimetry–PIV, for short–is used to visualize fluid flows. The technique introduces small, neutrally-buoyant particles into the flow and illuminates them with laser light. By comparing images of the illuminated particles, computer algorithms can work out the velocity (and other variables) of a flow. Typical methods use hollow glass spheres or polystyrene beads as the particles that follow the flow, but these options have many downsides. They’re expensive–as much as $200/pound–and they can potentially harm test subjects, like animals whose swimming researchers are studying. Instead, researchers are now looking at biodegradable options for PIV particles.

    One study found that corn and arrowroot starches were good candidates, at least for applications using artificial seawater. The powders were close to neutrally-buoyant, had uniform particle sizes, and accurately captured the flow around an airfoil, live brine shrimp, and free-swimming moon jellyfish. (Image credit: M. Kovalets; research credit: Y. Su et al.; via Ars Technica)

    #biology #flowVisualization #fluidDynamics #particleImageVelocimetry #physics #PIV #science

  17. Non-Newtonian Effects in Magma Flows

    As magma approaches the surface, it forces its way through new and existing fractures in the crust, forming dikes. When a volcano finally erupts, the magma’s viscosity is a major factor in just how explosive and dangerous the eruption will be, but a new study shows that what we see from the surface is a poor predictor of how magma actually flows within the dike.

    Researchers built their own artificial dike using a clear elastic gelatin, which they injected water and shear-thinning magma-mimics into. By tracking particles in the liquids, they could observe how each liquid followed on its way to the surface. All of the liquids formed similar-looking dikes at a similar speed, but within the dike, the liquids flowed very differently. Water cut a central jet through the gelatin, then showed areas of recirculation along the outer edges. In contrast, the shear-thinning liquids — which are likely more representative of actual magma — showed no recirculation. Instead, they flowed through the dike in a smooth, fan-like shape.

    The team cautions that surface-level observations of developing magma dikes provide little information on the flow going on underneath. Instead, their results suggest that volcanologists modeling magma underground should take care to include the magma’s shear-thinning to properly capture the flow. (Image credit: T. Grypachevska; research credit: J. Kavanagh et al.; via Eos)

    #fluidDynamics #geophysics #magma #physics #PIV #science #volcano

  18. CW: Update on 4th appointment with the NHS EOEGS; 2nd surgery referral; discussion of trans fem gender-affirming surgeries

    Hey folks :FediverseSymbol:

    Per the details of this earlier post, we had our 4th appointment with the NHS East of England Gender Service (EOEGS) today.

    The worst thing about that appointment was that it was at 13:30-14:30, which put us into a kind of neurodivergent purgatory / paralysis, where we felt like we really couldn't get on with the day until the appointment, as it was all we could think about pretty much.

    We did manage to distract ourselves for a while by passing feedback to Union Medico over the syringe holders they provide for their 90° Super Grip auto-injector. We're planning to do a full review of that for everyone this week.

    Anyway, the appointment went well. The doctor (cis guy, he/him) pretty much made it clear that he just needed to gather more info for the referral, and that he didn't expect there to be any issues. He asked whether it would be okay for a trainee colleague to sit in on the call, which we were fine with, especially as we're pretty sure she was trans herself. At the very least, she gave off good vibes.

    Despite being anxious AF the whole time, and having to play the good-little-trans-patient to pass through the gatekeeping, it was just a serious of questions about medical history, what we were after, the risks, the reasons for wanting this, whether we had stored gametes etc.

    Despite the many risks (e.g., fistula; granulation tissue; prolapse; etc), long recovery time, and the need for very regular dilation for ages, we agree that the benefits are worth it.

    The doctor seemed suitably impressed by our knowledge and sources (e.g., Gender Construction Kit; TransActual), as well as the limited options on the figurative #NHS menu for trans gender-affirming surgeries.

    If you're trans fem, your options via the NHS are:

    • Penile inversion vaginoplasty (PIV).
      • Creates a neovagina using material from the penis turned inside out ("inverted").
    • Penoscrotal flap vaginoplasty.
      • Creates the vagina using material from both the penis and scrotum.
      • Typically done if you've not got much material to work with 😅
    • Cosmetic vaginoplasty.
      • Creates a vulva and labia (labiaplasty), and a clitoris (clitoroplasty) from the penis (and scrotum if needed), but without a neovagina.
      • Aka vulvoplasty or zero-depth.

    Please note the lack of:

    • Peritoneal pull-through (PPT) vaginoplasty.
      • A newer technique that involves several incisions into the abdomen and using internal peritoneal tissue to create the neovagina.
    • Penile-preserving vaginoplasty.
      • Creates a neovagina using peritoneal tissue, without removing the penis.
      • Aka penile preservation vaginoplasty, phallus-preserving vulvovaginoplasty, etc.
    • Standalone bilateral orchidectomy.
      • Removes the testes and scrotum.
      • Sometimes known as a bofa-ectomy.

    The NHS, as standard, also does not offer:

    There is a mere sliver of a fraction of a chance that we might get the NHS to fund some of our additional needs, which they don't currently provide: Individual Funding Requests (IFRs).

    We're not going to sugarcoat it: the IFR route is highly likely to fail for us :FaceExhaling: Your "clinical circumstances" must be "exceptional" and the benefit clear in order to "receive benefit from a treatment or service that isn’t routinely offered by the NHS".

    Even getting the EOEGS to accept that it was their responsibility to fill in any IFRs required us to contact NHS England's dedicated team for IFRs. They were not particularly happy about this.

    Despite making them aware of their IFR responsibilities in March 2024, they have seemingly still not put any procedure in place for IFRs.

    The doctor made notes about this during our appointment, along with our bespoke requests, and advised that he would follow this up with the first doctor involved, as well as the person in charge. (Can't remember the precise term. Service lead? Clinical lead?)

    Anyway, once we've got them to fill out the bleeping IFRs, those will then be submitted to our local Integrated Care Board (ICB).

    They used to be called Clinical Commissioning Groups (CCGs), but suddenly changed the name and structure back in July 2022.

    To make the structure even less clear, each ICB sits under a broader Integrated Care System (ICS).

    We'll continue to share info on how it all goes, but realistically we expect all our requests to be denied, as they likely won't want to set a precedent or cough up the funding.

    However, at least we'll then know that we've tried every official route we could before setting up any kind of crowdfunding campaign(s).

    #NHS #NHSEngland #trans #transgender #TransFem #healthcare #TransHealthcare #EOEGS #UnionMedico #gatekeeping #vaginoplasty #PIV #PPT #orchidectomy #BofaEctomy #FFS #VFS #FacialFeminisationSurgery #VoiceFeminisationSurgery #glottoplasty #HairRemoval #ICB #ICS #IFR #IndividualFundingRequest #IntegratedCareSystem #IntegratedCareBoard #queer #LGBTQ+ #LGBTQIA+ #LaserHairRemoval #LaserHairReduction #electrolysis #thermolysis #neurodivergent #neurodivergence

  19. CW: Update on 4th appointment with the NHS EOEGS; 2nd surgery referral; discussion of trans fem gender-affirming surgeries

    Hey folks :FediverseSymbol:

    Per the details of this earlier post, we had our 4th appointment with the NHS East of England Gender Service (EOEGS) today.

    The worst thing about that appointment was that it was at 13:30-14:30, which put us into a kind of neurodivergent purgatory / paralysis, where we felt like we really couldn't get on with the day until the appointment, as it was all we could think about pretty much.

    We did manage to distract ourselves for a while by passing feedback to Union Medico over the syringe holders they provide for their 90° Super Grip auto-injector. We're planning to do a full review of that for everyone this week.

    Anyway, the appointment went well. The doctor (cis guy, he/him) pretty much made it clear that he just needed to gather more info for the referral, and that he didn't expect there to be any issues. He asked whether it would be okay for a trainee colleague to sit in on the call, which we were fine with, especially as we're pretty sure she was trans herself. At the very least, she gave off good vibes.

    Despite being anxious AF the whole time, and having to play the good-little-trans-patient to pass through the gatekeeping, it was just a serious of questions about medical history, what we were after, the risks, the reasons for wanting this, whether we had stored gametes etc.

    Despite the many risks (e.g., fistula; granulation tissue; prolapse; etc), long recovery time, and the need for very regular dilation for ages, we agree that the benefits are worth it.

    The doctor seemed suitably impressed by our knowledge and sources (e.g., Gender Construction Kit; TransActual), as well as the limited options on the figurative #NHS menu for trans gender-affirming surgeries.

    If you're trans fem, your options via the NHS are:

    • Penile inversion vaginoplasty (PIV).
      • Creates a neovagina using material from the penis turned inside out ("inverted").
    • Penoscrotal flap vaginoplasty.
      • Creates the vagina using material from both the penis and scrotum.
      • Typically done if you've not got much material to work with 😅
    • Cosmetic vaginoplasty.
      • Creates a vulva and labia (labiaplasty), and a clitoris (clitoroplasty) from the penis (and scrotum if needed), but without a neovagina.
      • Aka vulvoplasty or zero-depth.

    Please note the lack of:

    • Peritoneal pull-through (PPT) vaginoplasty.
      • A newer technique that involves several incisions into the abdomen and using internal peritoneal tissue to create the neovagina.
    • Penile-preserving vaginoplasty.
      • Creates a neovagina using peritoneal tissue, without removing the penis.
      • Aka penile preservation vaginoplasty, phallus-preserving vulvovaginoplasty, etc.
    • Standalone bilateral orchidectomy.
      • Removes the testes and scrotum.
      • Sometimes known as a bofa-ectomy.

    The NHS, as standard, also does not offer:

    There is a mere sliver of a fraction of a chance that we might get the NHS to fund some of our additional needs, which they don't currently provide: Individual Funding Requests (IFRs).

    We're not going to sugarcoat it: the IFR route is highly likely to fail for us :FaceExhaling: Your "clinical circumstances" must be "exceptional" and the benefit clear in order to "receive benefit from a treatment or service that isn’t routinely offered by the NHS".

    Even getting the EOEGS to accept that it was their responsibility to fill in any IFRs required us to contact NHS England's dedicated team for IFRs. They were not particularly happy about this.

    Despite making them aware of their IFR responsibilities in March 2024, they have seemingly still not put any procedure in place for IFRs.

    The doctor made notes about this during our appointment, along with our bespoke requests, and advised that he would follow this up with the first doctor involved, as well as the person in charge. (Can't remember the precise term. Service lead? Clinical lead?)

    Anyway, once we've got them to fill out the bleeping IFRs, those will then be submitted to our local Integrated Care Board (ICB).

    They used to be called Clinical Commissioning Groups (CCGs), but suddenly changed the name and structure back in July 2022.

    To make the structure even less clear, each ICB sits under a broader Integrated Care System (ICS).

    We'll continue to share info on how it all goes, but realistically we expect all our requests to be denied, as they likely won't want to set a precedent or cough up the funding.

    However, at least we'll then know that we've tried every official route we could before setting up any kind of crowdfunding campaign(s).

    #NHS #NHSEngland #trans #transgender #TransFem #healthcare #TransHealthcare #EOEGS #UnionMedico #gatekeeping #vaginoplasty #PIV #PPT #orchidectomy #BofaEctomy #FFS #VFS #FacialFeminisationSurgery #VoiceFeminisationSurgery #glottoplasty #HairRemoval #ICB #ICS #IFR #IndividualFundingRequest #IntegratedCareSystem #IntegratedCareBoard #queer #LGBTQ+ #LGBTQIA+ #LaserHairRemoval #LaserHairReduction #electrolysis #thermolysis #neurodivergent #neurodivergence

  20. CW: Update on 4th appointment with the NHS EOEGS; 2nd surgery referral; discussion of trans fem gender-affirming surgeries

    Hey folks :FediverseSymbol:

    Per the details of this earlier post, we had our 4th appointment with the NHS East of England Gender Service (EOEGS) today.

    The worst thing about that appointment was that it was at 13:30-14:30, which put us into a kind of neurodivergent purgatory / paralysis, where we felt like we really couldn't get on with the day until the appointment, as it was all we could think about pretty much.

    We did manage to distract ourselves for a while by passing feedback to Union Medico over the syringe holders they provide for their 90° Super Grip auto-injector. We're planning to do a full review of that for everyone this week.

    Anyway, the appointment went well. The doctor (cis guy, he/him) pretty much made it clear that he just needed to gather more info for the referral, and that he didn't expect there to be any issues. He asked whether it would be okay for a trainee colleague to sit in on the call, which we were fine with, especially as we're pretty sure she was trans herself. At the very least, she gave off good vibes.

    Despite being anxious AF the whole time, and having to play the good-little-trans-patient to pass through the gatekeeping, it was just a serious of questions about medical history, what we were after, the risks, the reasons for wanting this, whether we had stored gametes etc.

    Despite the many risks (e.g., fistula; granulation tissue; prolapse; etc), long recovery time, and the need for very regular dilation for ages, we agree that the benefits are worth it.

    The doctor seemed suitably impressed by our knowledge and sources (e.g., Gender Construction Kit; TransActual), as well as the limited options on the figurative #NHS menu for trans gender-affirming surgeries.

    If you're trans fem, your options via the NHS are:

    • Penile inversion vaginoplasty (PIV).
      • Creates a neovagina using material from the penis turned inside out ("inverted").
    • Penoscrotal flap vaginoplasty.
      • Creates the vagina using material from both the penis and scrotum.
      • Typically done if you've not got much material to work with 😅
    • Cosmetic vaginoplasty.
      • Creates a vulva and labia (labiaplasty), and a clitoris (clitoroplasty) from the penis (and scrotum if needed), but without a neovagina.
      • Aka vulvoplasty or zero-depth.

    Please note the lack of:

    • Peritoneal pull-through (PPT) vaginoplasty.
      • A newer technique that involves several incisions into the abdomen and using internal peritoneal tissue to create the neovagina.
    • Penile-preserving vaginoplasty.
      • Creates a neovagina using peritoneal tissue, without removing the penis.
      • Aka penile preservation vaginoplasty, phallus-preserving vulvovaginoplasty, etc.
    • Standalone bilateral orchidectomy.
      • Removes the testes and scrotum.
      • Sometimes known as a bofa-ectomy.

    The NHS, as standard, also does not offer:

    There is a mere sliver of a fraction of a chance that we might get the NHS to fund some of our additional needs, which they don't currently provide: Individual Funding Requests (IFRs).

    We're not going to sugarcoat it: the IFR route is highly likely to fail for us :FaceExhaling: Your "clinical circumstances" must be "exceptional" and the benefit clear in order to "receive benefit from a treatment or service that isn’t routinely offered by the NHS".

    Even getting the EOEGS to accept that it was their responsibility to fill in any IFRs required us to contact NHS England's dedicated team for IFRs. They were not particularly happy about this.

    Despite making them aware of their IFR responsibilities in March 2024, they have seemingly still not put any procedure in place for IFRs.

    The doctor made notes about this during our appointment, along with our bespoke requests, and advised that he would follow this up with the first doctor involved, as well as the person in charge. (Can't remember the precise term. Service lead? Clinical lead?)

    Anyway, once we've got them to fill out the bleeping IFRs, those will then be submitted to our local Integrated Care Board (ICB).

    They used to be called Clinical Commissioning Groups (CCGs), but suddenly changed the name and structure back in July 2022.

    To make the structure even less clear, each ICB sits under a broader Integrated Care System (ICS).

    We'll continue to share info on how it all goes, but realistically we expect all our requests to be denied, as they likely won't want to set a precedent or cough up the funding.

    However, at least we'll then know that we've tried every official route we could before setting up any kind of crowdfunding campaign(s).

    #NHS #NHSEngland #trans #transgender #TransFem #healthcare #TransHealthcare #EOEGS #UnionMedico #gatekeeping #vaginoplasty #PIV #PPT #orchidectomy #BofaEctomy #FFS #VFS #FacialFeminisationSurgery #VoiceFeminisationSurgery #glottoplasty #HairRemoval #ICB #ICS #IFR #IndividualFundingRequest #IntegratedCareSystem #IntegratedCareBoard #queer #LGBTQ+ #LGBTQIA+ #LaserHairRemoval #LaserHairReduction #electrolysis #thermolysis #neurodivergent #neurodivergence

  21. CW: Update on 4th appointment with the NHS EOEGS; 2nd surgery referral; discussion of trans fem gender-affirming surgeries

    Hey folks :FediverseSymbol:

    Per the details of this earlier post, we had our 4th appointment with the NHS East of England Gender Service (EOEGS) today.

    The worst thing about that appointment was that it was at 13:30-14:30, which put us into a kind of neurodivergent purgatory / paralysis, where we felt like we really couldn't get on with the day until the appointment, as it was all we could think about pretty much.

    We did manage to distract ourselves for a while by passing feedback to Union Medico over the syringe holders they provide for their 90° Super Grip auto-injector. We're planning to do a full review of that for everyone this week.

    Anyway, the appointment went well. The doctor (cis guy, he/him) pretty much made it clear that he just needed to gather more info for the referral, and that he didn't expect there to be any issues. He asked whether it would be okay for a trainee colleague to sit in on the call, which we were fine with, especially as we're pretty sure she was trans herself. At the very least, she gave off good vibes.

    Despite being anxious AF the whole time, and having to play the good-little-trans-patient to pass through the gatekeeping, it was just a serious of questions about medical history, what we were after, the risks, the reasons for wanting this, whether we had stored gametes etc.

    Despite the many risks (e.g., fistula; granulation tissue; prolapse; etc), long recovery time, and the need for very regular dilation for ages, we agree that the benefits are worth it.

    The doctor seemed suitably impressed by our knowledge and sources (e.g., Gender Construction Kit; TransActual), as well as the limited options on the figurative #NHS menu for trans gender-affirming surgeries.

    If you're trans fem, your options via the NHS are:

    • Penile inversion vaginoplasty (PIV).
      • Creates a neovagina using material from the penis turned inside out ("inverted").
    • Penoscrotal flap vaginoplasty.
      • Creates the vagina using material from both the penis and scrotum.
      • Typically done if you've not got much material to work with 😅
    • Cosmetic vaginoplasty.
      • Creates a vulva and labia (labiaplasty), and a clitoris (clitoroplasty) from the penis (and scrotum if needed), but without a neovagina.
      • Aka vulvoplasty or zero-depth.

    Please note the lack of:

    • Peritoneal pull-through (PPT) vaginoplasty.
      • A newer technique that involves several incisions into the abdomen and using internal peritoneal tissue to create the neovagina.
    • Penile-preserving vaginoplasty.
      • Creates a neovagina using peritoneal tissue, without removing the penis.
      • Aka penile preservation vaginoplasty, phallus-preserving vulvovaginoplasty, etc.
    • Standalone bilateral orchidectomy.
      • Removes the testes and scrotum.
      • Sometimes known as a bofa-ectomy.

    The NHS, as standard, also does not offer:

    There is a mere sliver of a fraction of a chance that we might get the NHS to fund some of our additional needs, which they don't currently provide: Individual Funding Requests (IFRs).

    We're not going to sugarcoat it: the IFR route is highly likely to fail for us :FaceExhaling: Your "clinical circumstances" must be "exceptional" and the benefit clear in order to "receive benefit from a treatment or service that isn’t routinely offered by the NHS".

    Even getting the EOEGS to accept that it was their responsibility to fill in any IFRs required us to contact NHS England's dedicated team for IFRs. They were not particularly happy about this.

    Despite making them aware of their IFR responsibilities in March 2024, they have seemingly still not put any procedure in place for IFRs.

    The doctor made notes about this during our appointment, along with our bespoke requests, and advised that he would follow this up with the first doctor involved, as well as the person in charge. (Can't remember the precise term. Service lead? Clinical lead?)

    Anyway, once we've got them to fill out the bleeping IFRs, those will then be submitted to our local Integrated Care Board (ICB).

    They used to be called Clinical Commissioning Groups (CCGs), but suddenly changed the name and structure back in July 2022.

    To make the structure even less clear, each ICB sits under a broader Integrated Care System (ICS).

    We'll continue to share info on how it all goes, but realistically we expect all our requests to be denied, as they likely won't want to set a precedent or cough up the funding.

    However, at least we'll then know that we've tried every official route we could before setting up any kind of crowdfunding campaign(s).

    #NHS #NHSEngland #trans #transgender #TransFem #healthcare #TransHealthcare #EOEGS #UnionMedico #gatekeeping #vaginoplasty #PIV #PPT #orchidectomy #BofaEctomy #FFS #VFS #FacialFeminisationSurgery #VoiceFeminisationSurgery #glottoplasty #HairRemoval #ICB #ICS #IFR #IndividualFundingRequest #IntegratedCareSystem #IntegratedCareBoard #queer #LGBTQ+ #LGBTQIA+ #LaserHairRemoval #LaserHairReduction #electrolysis #thermolysis #neurodivergent #neurodivergence

  22. CW: Update on 4th appointment with the NHS EOEGS; 2nd surgery referral; discussion of trans fem gender-affirming surgeries

    Hey folks :FediverseSymbol:

    Per the details of this earlier post, we had our 4th appointment with the NHS East of England Gender Service (EOEGS) today.

    The worst thing about that appointment was that it was at 13:30-14:30, which put us into a kind of neurodivergent purgatory / paralysis, where we felt like we really couldn't get on with the day until the appointment, as it was all we could think about pretty much.

    We did manage to distract ourselves for a while by passing feedback to Union Medico over the syringe holders they provide for their 90° Super Grip auto-injector. We're planning to do a full review of that for everyone this week.

    Anyway, the appointment went well. The doctor (cis guy, he/him) pretty much made it clear that he just needed to gather more info for the referral, and that he didn't expect there to be any issues. He asked whether it would be okay for a trainee colleague to sit in on the call, which we were fine with, especially as we're pretty sure she was trans herself. At the very least, she gave off good vibes.

    Despite being anxious AF the whole time, and having to play the good-little-trans-patient to pass through the gatekeeping, it was just a serious of questions about medical history, what we were after, the risks, the reasons for wanting this, whether we had stored gametes etc.

    Despite the many risks (e.g., fistula; granulation tissue; prolapse; etc), long recovery time, and the need for very regular dilation for ages, we agree that the benefits are worth it.

    The doctor seemed suitably impressed by our knowledge and sources (e.g., Gender Construction Kit; TransActual), as well as the limited options on the figurative #NHS menu for trans gender-affirming surgeries.

    If you're trans fem, your options via the NHS are:

    • Penile inversion vaginoplasty (PIV).
      • Creates a neovagina using material from the penis turned inside out ("inverted").
    • Penoscrotal flap vaginoplasty.
      • Creates the vagina using material from both the penis and scrotum.
      • Typically done if you've not got much material to work with 😅
    • Cosmetic vaginoplasty.
      • Creates a vulva and labia (labiaplasty), and a clitoris (clitoroplasty) from the penis (and scrotum if needed), but without a neovagina.
      • Aka vulvoplasty or zero-depth.

    Please note the lack of:

    • Peritoneal pull-through (PPT) vaginoplasty.
      • A newer technique that involves several incisions into the abdomen and using internal peritoneal tissue to create the neovagina.
    • Penile-preserving vaginoplasty.
      • Creates a neovagina using peritoneal tissue, without removing the penis.
      • Aka penile preservation vaginoplasty, phallus-preserving vulvovaginoplasty, etc.
    • Standalone bilateral orchidectomy.
      • Removes the testes and scrotum.
      • Sometimes known as a bofa-ectomy.

    The NHS, as standard, also does not offer:

    There is a mere sliver of a fraction of a chance that we might get the NHS to fund some of our additional needs, which they don't currently provide: Individual Funding Requests (IFRs).

    We're not going to sugarcoat it: the IFR route is highly likely to fail for us :FaceExhaling: Your "clinical circumstances" must be "exceptional" and the benefit clear in order to "receive benefit from a treatment or service that isn’t routinely offered by the NHS".

    Even getting the EOEGS to accept that it was their responsibility to fill in any IFRs required us to contact NHS England's dedicated team for IFRs. They were not particularly happy about this.

    Despite making them aware of their IFR responsibilities in March 2024, they have seemingly still not put any procedure in place for IFRs.

    The doctor made notes about this during our appointment, along with our bespoke requests, and advised that he would follow this up with the first doctor involved, as well as the person in charge. (Can't remember the precise term. Service lead? Clinical lead?)

    Anyway, once we've got them to fill out the bleeping IFRs, those will then be submitted to our local Integrated Care Board (ICB).

    They used to be called Clinical Commissioning Groups (CCGs), but suddenly changed the name and structure back in July 2022.

    To make the structure even less clear, each ICB sits under a broader Integrated Care System (ICS).

    We'll continue to share info on how it all goes, but realistically we expect all our requests to be denied, as they likely won't want to set a precedent or cough up the funding.

    However, at least we'll then know that we've tried every official route we could before setting up any kind of crowdfunding campaign(s).

    #NHS #NHSEngland #trans #transgender #TransFem #healthcare #TransHealthcare #EOEGS #UnionMedico #gatekeeping #vaginoplasty #PIV #PPT #orchidectomy #BofaEctomy #FFS #VFS #FacialFeminisationSurgery #VoiceFeminisationSurgery #glottoplasty #HairRemoval #ICB #ICS #IFR #IndividualFundingRequest #IntegratedCareSystem #IntegratedCareBoard #queer #LGBTQ+ #LGBTQIA+ #LaserHairRemoval #LaserHairReduction #electrolysis #thermolysis #neurodivergent #neurodivergence

  23. Don't dismiss the #Yubico security advisory, but don't panic either. My hot take, pending further analysis of the full 88-page report, is that at present the problem is limited to ECC signing functions and doesn't provide a practical attack surface for keys that remain in your physical possession, use non-cached KDF for PINs, and aren't connected to untrusted hardware.

    1. Read yubico.com/support/security-ad to learn more about what's wrong, and the full 88-page technical report available from ninjalab.io/eucleak/.

    2. Stop here if you don't use the #FIDO2, #OpenPGP, or #PIV functions of the card.

    If you do have an affected firmware version AND are using elliptic curves for signing, there are some mitigations you can take.

    1. Run KDF setup if you haven't already, and then regenerate your PIN numbers for all affected protocols on vulnerable keys. NB: I couldn't find this in the advisory, but it makes sense if you stop and think about it.

    2. Add a PIN to your FIDO2 authentication on affected firmware versions.

    3. Disable the "touch cache" feature on the key to limit the potential window of exposure window on untrusted hardware.

    4. Switch all #ECDSA signing and attestation keys to use #RSA instead of an elliptic curve algorithm if possible. This is generally the default for most impacted functions, but may have been changed by advanced users or by organizational policy. NB: For OpenPGP, make sure you generate a revocation certificate for your signing key first before replacing the signature slot. This may impact other OpenPGP keys too if they were signed with the ECC key, so you might need to re-sign or regenerate your other keys as well.

    5. If you rely on FIDO2, supplement your FIDO2 authentication with an additional factor if possible.

    6. Revoke and replace keys that must use ECC algorithms for signing keys, use FIDO2 without an additional factor, are likely to be exposed to untrusted hardware, or that can't be used with a device PIN.

    The only thing that really makes this vulnerability inconvenient is that the firmware of affected keys can't be replaced. I have seen no announcements about whether or not Yubico will be offering some kind of replacement program to affected customers, but users of RSA signature keys, the default Yubico attestation certificates, or the #YubiOTP protocol do not appear to be impacted at this time.

  24. Waiting on a response from IdenTrust, but it appears that they don't support Yubikeys for ECA certs. This is pretty disappointing since they never say on their website which tokens they do support. Also, their retrieval app only works on Windows and MacOS (?x64/arm?). The US govt wants better security, but they keep pushing bad solutions.

    #yubikey #piv #eca #identrust

  25. (Disclaimer: I work there)

    Check out @nitrokey. we make Open Source software and hardware security keys that have pretty similar functionality with Yubikeys.

    #Fido #PGO and in progress #PIV

  26. Do you know any hardware keys, with fingerprint sensor, that support PIV with support for ed25519 and X25519? Any recommendations?

    I know #yubico announced the "YubiKey Bio Multi-protocol Edition". That sounds like what I want, but it appears to be only available as early access to enterprise customers.

    #pgp #yubikey #signature #piv #smartcard #cryptography

  27. I updated my crowd-sourced list of #openpgp, #fido, #u2f and #piv, #pki security tokens:

    l.0l.de/tokens

    Feel free to have a look if you are in the market for a new security token :-) Contributions and feedback are highly welcome :)

  28. 🔹#FluidSim our #CFD package also gets pre-compiled #Pythran extensions in wheels!

    🔹#FluidImage the scalable #PIV package gets its first release in many years, also gets wheels! Heads up for another minor release soon, with breaking changes:

    fluidimage.readthedocs.io/en/l

    🔹All this was made possible by the new #Meson support in #Transonic

    transonic.readthedocs.io/en/la

    and a bit of CI/CD stuff powered by #cibuildwheel

    #ThisMonthInFluiddyn

  29. I started to work on an exhaustive comparison of USB crypto tokens here: l.0l.de/tokens

    Contributions are very welcome :)

    #yubikey #nitrokey #fido #piv

  30. @fluiddyn The image case would be a good one for , given our origins of working with 2D slices of “3D images". Please don't hesitate to reach out if you could use assistance with plotting or trying to improve performance.

  31. ...and after #peerreview 🧐 the final version is now published @J_Exp_Biol 🥳 Bravo Vincent! doi.org/10.1242/jeb.245929 In the video: Q-criterion isosurfaces colored by the streamwise vorticity computed from volumetric velocimetry #PIV #fluiddynamics

  32. Over the last half year, I've spent time with PKCS #11 and PIV hardware security devices. In particular, using such devices in the context.

    Entry points for results of this work:

    - codeberg.org/heiko/openpgp-pkc
    - codeberg.org/heiko/openpgp-piv
    - codeberg.org/heiko/pkcs11-open

    One particular focus was building CI testing infrastructure (including gitlab.com/hkos/virtual-piv/), to make future work on these codebases easier (and hopefully fun).

    [This work was funded by @sovtechfund]

  33. I added a bit of documentation to my repository of "virtual PIV hardware tokens": gitlab.com/hkos/virtual-piv/

    (These virtual cards are useful for CI-testing of software that uses PIV devices.)

  34. I added a bit of documentation to my repository of "virtual PIV hardware tokens": gitlab.com/hkos/virtual-piv/

    (These virtual cards are useful for CI-testing of software that uses PIV devices.)

    #PIV #FIPS201 #HSM #OpenPGP

  35. I added a bit of documentation to my repository of "virtual PIV hardware tokens": gitlab.com/hkos/virtual-piv/

    (These virtual cards are useful for CI-testing of software that uses PIV devices.)

    #PIV #FIPS201 #HSM #OpenPGP

  36. I added a bit of documentation to my repository of "virtual PIV hardware tokens": gitlab.com/hkos/virtual-piv/

    (These virtual cards are useful for CI-testing of software that uses PIV devices.)

    #PIV #FIPS201 #HSM #OpenPGP

  37. I added a bit of documentation to my repository of "virtual PIV hardware tokens": gitlab.com/hkos/virtual-piv/

    (These virtual cards are useful for CI-testing of software that uses PIV devices.)

    #PIV #FIPS201 #HSM #OpenPGP

  38. 又忍不住吐槽一番,X.509 證書只能有一個簽發方,PIV 使用 X.509 證書,一個 PIV 設備只有一個認證證書槽,而 PIV 生態裡常見的用途(比如 FreeIPA 客戶端證書登錄)都要求使用服務方簽發的證書,這實質上導致了一個 PIV 設備僅能用於一個服務的一個身份,與現如今用戶的一般需求不相稱(用戶一般是使用一個設備對應很多個服務上的一個身份)。
    可能還是設計於較近時代的 FIDO2 更適合於這種場景,但是又會遇到一些其他的問題,比如平臺不支持 FIDO(點名批評 FreeIPA),比如 HTTPS 客戶端認證不支持 FIDO(FIDO 現階段在瀏覽器裡還是只能由網站通過 JS 調用)……
    mastodon.yuuta.moe/@coelacanth

    #PIV #X509 #FIDO

  39. Im @fedora #FedoraMagazine erschien am Freitag mein umfassender Artikel zu einigen Einsatzmöglichkeiten von #YubiKey|s (und vergleichbaren Hardware Security Tokens)

    fedoramagazine.org/how-to-use- (Englisch)

    #piv #fido #fido2 #u2f #webauthn #pam #sudo #openssh #ssh

  40. Im @fedora #FedoraMagazine erschien am Freitag mein umfassender Artikel zu einigen Einsatzmöglichkeiten von #YubiKey|s (und vergleichbaren Hardware Security Tokens)

    fedoramagazine.org/how-to-use- (Englisch)

    #piv #fido #fido2 #u2f #webauthn #pam #sudo #openssh #ssh

  41. Im @fedora #FedoraMagazine erschien am Freitag mein umfassender Artikel zu einigen Einsatzmöglichkeiten von #YubiKey|s (und vergleichbaren Hardware Security Tokens)

    fedoramagazine.org/how-to-use- (Englisch)

    #piv #fido #fido2 #u2f #webauthn #pam #sudo #openssh #ssh

  42. And this is basically how you can make experimental #fluiddynamics measurements such as #ParticleImageVelocimetry #PIV in fixed bed reactors used, e.g., as heterogenous catalytic reactors in the chemical industry.

    ---
    RT @TheSpaceGal
    Using the refractive index to make pennies float 🪄

    Impt safety note: dry water beads grow 100x their size (to what you see here), so be extra vigilant with the dry beads before they’ve grown around kids…
    twitter.com/TheSpaceGal/status

  43. And this is basically how you can make experimental #fluiddynamics measurements such as #ParticleImageVelocimetry #PIV in fixed bed reactors used, e.g., as heterogenous catalytic reactors in the chemical industry.

    ---
    RT @TheSpaceGal
    Using the refractive index to make pennies float 🪄

    Impt safety note: dry water beads grow 100x their size (to what you see here), so be extra vigilant with the dry beads before they’ve grown around kids…
    twitter.com/TheSpaceGal/status

  44. And this is basically how you can make experimental #fluiddynamics measurements such as #ParticleImageVelocimetry #PIV in fixed bed reactors used, e.g., as heterogenous catalytic reactors in the chemical industry.

    ---
    RT @TheSpaceGal
    Using the refractive index to make pennies float 🪄

    Impt safety note: dry water beads grow 100x their size (to what you see here), so be extra vigilant with the dry beads before they’ve grown around kids…
    twitter.com/TheSpaceGal/status

  45. And this is basically how you can make experimental #fluiddynamics measurements such as #ParticleImageVelocimetry #PIV in fixed bed reactors used, e.g., as heterogenous catalytic reactors in the chemical industry.

    ---
    RT @TheSpaceGal
    Using the refractive index to make pennies float 🪄

    Impt safety note: dry water beads grow 100x their size (to what you see here), so be extra vigilant with the dry beads before they’ve grown around kids…
    twitter.com/TheSpaceGal/status

  46. A so-called cross-correlation for two consecutive images will give you the direction and value of the flow velocity in the recorded flow field.

    Here's an example where I recorded the water movement surrounding a bubble rising through the field of view
    2/2

    ---
    RT @drlutzboehm
    So, I told you about the #bubble and #CFD (see 🧵). A couple of years later I used the LASER-based technique #ParticleImageVelocimetry #PIV to investigate the flow…
    twitter.com/DrLutzBoehm/status

  47. A so-called cross-correlation for two consecutive images will give you the direction and value of the flow velocity in the recorded flow field.

    Here's an example where I recorded the water movement surrounding a bubble rising through the field of view
    2/2

    ---
    RT @drlutzboehm
    So, I told you about the #bubble and #CFD (see 🧵). A couple of years later I used the LASER-based technique #ParticleImageVelocimetry #PIV to investigate the flow…
    twitter.com/DrLutzBoehm/status