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InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)J
Posts
2
Comments
140
Joined
3 yr. ago

I mean no harm.

  • arxiv.org: a pre-print source, this is not peer-reviewed yet. So, until other papers refer to this paper, it has low significance in the literature. The paper has references to other papers and to previous corpus of knowledge on the subject, which is good. However, this paper is based on simulations only.

    Crucially, the scheme identified here does not negatively impact electricity production, and is also compatible with the challenging tritium breeding requirements of fusion power plant design because (n, 2n) reactions of 198Hg drive both transmutation and neutron multiplication

    Monte Carlo transport calculations show that neutrons produced in a tokamak power plant can convert the abundant isotope 198Hg to stable 197Au via the (n,2n) channel, yielding several tonnes of gold per plant-year without compromising the tritium breeding ratio.

    The decommissioned blanket material would increase in value, and the Mercury-198 in the blanket doesn't majorly impact its effectiveness in transmuting lithium to tritium.

    The "worst" gold isotope half-life is less than a year, so only a modest cool-down is needed for the output:

    197Au to be Class 7 when activity concentration is > 2700 pCi/g, which is reached after 13.7 years for the initial concentration listed.

    An even more stringent constraint can be applied for any gold that will be regularly handled by the general population. As a highly conservative requirement, we can stipulate that this gold must be less radioactive than a banana. Due to 40K content, bananas have an activity of ∼ 3520 pCi/kg, or about 420 pCi for a single banana. To meet this requirement, a troy ounce of gold with the initial isotope mix shown in Table 2 must sit for about 17.7 years to be below a banana equivalent level of activity.

    What strikes me here with this paper is the suggested liquid blanket, so this would be a kin of D-T Fusion MSR. We now have two proposed technologies behind being able handle hot radioactive liquids.

  • genius

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  • This is a kind of part you want a single metallic-crystal of.. anything less would we subpar and jesus. So no uncontrolled cooling of the cast for you. (or the rotor can decide this is a good day for a extra slow spin and no-flight.)

  • Caw caw

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  • If I had published a popular library under LGPL, and then found out that a chip company stole my code by ignoring/removing the license (change to less restrictive in attribution) I would perhaps go as far as subtly block my code from ever properly functioning on the company's chips, until the license is respected.

    People might have forgot what happened in linux kernel with the "nvidia shim module". Those were actually banned, non-gpl compatible kernel module cannot use gpl-only symbols from the kernel. What happened here is even worse, straight up violating the license from the authors.

    GPL license should have a version that could cheaply be defended by the victim of the license violation, if a verbatim violating copy is found. Some €€/month bill could pileup while a violating copy is proven to be distributed.

    edit: minor fixes.

  • Manage

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  • After using dnf a bit:

    • All the default answers are backwards to me, so dnf quite literally ignores my input.
    • dnf search did not show, by default, if a matching package is already installed.
    • Perfect perhaps for newbies, since dnf asks you trice.

    yeah.. arch is not leaving me anytime soon. The option to makepkg from source a few custom packages is very neat.

  • Fresh PWR fuel is ~4% U-235 and the rest is non-fissile uranium/cladding. ~95% of the potential energy still locked in the "waste" after spending ~2 years in the reactor. Breeder reactors would mean converting greater fraction of this mass into usable energy.

    Running PWR core has be at +150 Bar to have +300*C outlet temp - so if something goes wrong it goes wrong like Fukushima. The fuel can stay in the core only until economics say running the plant at less than 100% design power isn't profitable. Every 18/24 months the plant is needs to shutdown for maintance few a weeks to months. I don't like PWRs.

    "regular, i.e. non-breeder" MSRs that would just use uranium would be a massive improvement - both in safety and efficiency. Heat a massive silo of (secondary coolant) salt to +500*C with MSR, do the reactor repairs while this reserve runs the turbines, resume MSR. The issue is - politics, fear, and too little research in handling molten salts.

  • The scientists didn't joke about that tokamaks will be a great neutron factory/highest neutron flux available. Yes, neutron activation of the reactor walls/components is a problem that we need to solve. However, transmutation of lithium to tritium is required for the reactor to work in the long term, so having a high neutron flux source is a plus in this regard. (and a negative in all aspects of structural integrity...)

    The volume amount of activated material that would come out from tokamaks is a fraction compared to the literal tens of tons half-burnt uranium that takes way too long to decay to safe level. The more angrier the radioactivity, the less time it takes to decay away.

  • My level:

    7 - 8

    18446744073709551615, 4294967295, 65535, 255 what is this witchcraft?!

    A lot of sevens in octal, and now your clipboard is full of Fs. /j ::: spoiler ... /toohigheffort

  • I have heard that Windows tends to 'nuke' the EFI boot partition if it's shared with Linux. I'm not sure if it's valid to have two EFI partitions on the same disk, but if the box can handle a second EFI boot partition, that would be a safer option.

    There is also the issue that normal windows shutdown does not mean shutdown, but "hibernate". In this state, touching any of the partitions the windows was previously using could corrupt them if mounted in Linux. (The same applies in reverse, and would be even more dangerous.) This doesn't prevent dual-booting, but some care should be taken that the swiched-from-OS was actually shutdown.

  • Be in one fraction at once. H2O consist of differerent quantum-mechanical portions: para-water and ortho-water.

    And it only gets weirder.

    No. Don't google para-hydrogen. You will break your brain.

  • Now, provide an example that you cannot, is impossible, to translate into French.

    And I'll accept your claim of unknowing is better than knowing.

  • That implements a ******* VM in which all of the byte code runs in, and rest of source is just byte code listings that the linker magically gathers into a working program.

  • LOL

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  • Just do sysrq+s, sysrq+c (triggers panic) and flip the power switch for instant power off.

  • zsh-history-substring-search

    I lazily type part of the thing I want like "sys" and then ctrl+⬆️/⬇️ and sudo systemctl start libvirtd etc. appear like magic.

  • Every technology invented is a dual edge sword. Other edge propulses deluge of misinformation, llm hallucinations, brain washing of the masses, and exploit exploit for profit. The better side advances progress in science, well being, availbility of useful knowledge. Like the nuclerbomb, LLM "ai" is currenty in its infancy and is used as a weapon, there is a literal race to who makes the "biggest best" fkn "AI" to dominate the world. Eventually, the over optimistic buble bursts and reality of the flaws and risks will kick in. (Hopefully...)

  • 1st problem is that the mercury will highly likely poison the fusion plasma. The blanket is already a hard engineering problem to have it work in a "regular fusion reactor". 2nd problem nobody has said anything about is that you get a mixture of radioactive isotopes out of (a supposedly working) a transmutation reactor. This adds to required enrichment processes: to get 100% mercury-198 (from 10%) and possibly a purification of the freshly radioactive gold.

    I'd imagine radioactive gold is pretty much worthless. The Au-197 is metastable, and to my flaky understanding will emit gamma-rays, not to mention the other isotopes generated around Au-197.

  • Can I have some default juice? I think I glitched the matrix (again) today.

  • Sure it's terrifying, but you can start a sparky plasma show in a resilient enough container and keep it going for hours and the microwave won't break. (except maybe overheat.) The microwave will be fine as long as the arcs don't reach the waveguide cover. (which would risk burning/shorting the magnetron.)

    I have done the microwave grape plasma trick myself and started an arc in a microwave. The current between the two objects goes through a very narrow point, which is enough vaporize the contact point to plasma. This then can grow as the microwave continues to pump more energy into the spark.

  • hardmode: I did a fresh install on a HDD that is on verge of being dead. Every-time this thing boots it's a miracle. Somehow dd blanking the disk, plenty of smartctl offline disk surface scans and finally putting btrfs with data in DUP profile resurrected the HDD. I have run btrfs scrub daily or else the os install may bitrot and well.. expire. :D

    Edit: Todays catch, I was too late and now I have fix 3 files:

     
        
    Error summary:    read=112
      Corrected:      109
      Uncorrectable:  3
      Unverified:     0
    
      
  • Two new hobbies to keep me in the realitytm.

    It's just art and music. Plus a likely revival of old skill.