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Slashme

@ Slashme @lemmy.world

Posts
6
Comments
117
Joined
2 mo. ago

  • Why is the USA attacking Iran?

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  • *its

  • me_irl

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  • If you're 40 and you don't think you're middle-aged yet, you're quite optimistic.

  • Device that can extract 1,000 liters of clean water a day from desert air revealed by 2025 Nobel Prize winner

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  • https://www.science.org/doi/full/10.1126/science.aam8743 It really does work better than refrigeration or zeolite based systems.

    Here's some of the discussion in the article:

    Two-thirds of the world’s population is experiencing water shortages (1). The water in the form of vapor and droplets in the atmosphere, estimated to be about 13 thousand trillion liters (2), is a natural resource that could address the global water problem. Although there has been interest in dewing (3–6) from moist air and fog capture (7–9), these processes require either the frequent presence of 100% relative humidity (RH) or a large amount of energy and thus are not viable solutions for the capture of water from air. Ideally, a water-harvesting system should operate with a material that can take up and release water with minimum energy requirements and that is powered by low-grade energy sources, such as sunlight, in order to potentially allow its deployment in households, especially those located in sunny regions. Here, we demonstrate water harvesting by vapor adsorption using a porous metal-organic framework {microcrystalline powder form of MOF-801, [Zr6O4(OH)4(fumarate)6]} (10) in ambient air with low RH typical of the levels found in most dry regions of the world (down to a RH of 20%). We also report a device based on this MOF that can harvest and deliver water (2.8 liters of water per kilogram of MOF per day at 20% RH) under a nonconcentrated solar flux less than 1 sun (1 kW m–2), requiring no additional power input for producing water at ambient temperature outdoors. Porous materials, such as zeolites, silica gels, and MOFs, can harvest water from air by adsorption over a wide range of humidity values (11–13). However, conventional adsorbents (e.g., zeolites and silica gels) suffer from either low uptake of water or requiring high energy consumption to release water. Although MOFs have already been considered in numerous applications—including gas storage, separation, and catalysis (14–16); heat pumps (17, 18); and dehumidification (19)—the use of MOFs for water harvesting has only recently been proposed (10). The flexibility (20–22) with which MOFs can be made and modified at the molecular level, coupled with their ultrahigh porosity, makes them ideally suited for overcoming the challenges mentioned above.

  • 60 years without a German passport: “I just feel written off”

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  • That's not true anymore. In 2024 they greatly relaxed the rules.

  • 60 years without a German passport: “I just feel written off”

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  • There has to be more to this story. Ever since the rules on dual citizenship were relaxed, there have been thousands of people getting dual citizenship in Germany.

  • Device that can extract 1,000 liters of clean water a day from desert air revealed by 2025 Nobel Prize winner

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  • This is a bit more serious than the old, frequently-debunked "dehumidifier in the desert" stuff, because it doesn't depend on cooling the air to get the water out, but using a molecular sponge. If you pump enough air over that, you'll eventually fill it up, and you can drive the water out by heating it up.

    The guy behind this is a serious organic chemist, and his Nobel prize was actually for pioneering and developing these molecules, so it's not a case of "Nobel prize winner does daft stuff about a subject he's not an expert in", either.

    I'm still reserving judgement on whether this will be economically sensible, but I'm not dismissing it immediately, either.

  • Device that can extract 1,000 liters of clean water a day from desert air revealed by 2025 Nobel Prize winner

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  • This guy got his Nobel prize for molecular sponges that can bind and release water.

  • I know about pacman, no need to say it a dozen times.

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  • I'm currently an Ubuntu user, and the thought of using a GUI for package management is so foreign to me.

  • For useless... twisting... of our new technology

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  • I've had a few issues along the years. Linux user since 1997

  • French politician told a group of Russians: "My party will make sure Ukraine can never join NATO or the European Union. NATO is a military alliance just seeking trouble"

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  • Seems to be the French equivalent of Germany's Sahra Wagenknecht. Also nominally left-wing populist, but pro-Russia and taking weird rightwing talking points.

  • How to reassure your wife 101

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  • It used to be unplugged. It still is, but it used to be too.

    (Apologies to Mitch)

  • Bill Gates Admits ‘Affairs’ With Russian Women as He Apologizes to Foundation Staff Over Epstein Ties: Report

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  • "his 27-year marriage with two Russian women"

    I didn't know that was even legal.

  • What is one or more pieces of media you've consumed that kept making more content but needed to just end?

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  • The Belgarion novels by David Eddings. It would have done well as a trilogy, but the initial five-book series was OK as well. And then came The Malloreon, or The Quest for More Money. I finished it because I've got a bit of a completionist streak, but not because it was good.

    And then I found out what kind of person Eddings was.

  • 90% of Prostate Cancer Tumors Contained Microplastics

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  • All tumours, no exception, contain dihydrogen monoxide.

  • Scientists create universal nasal spray vaccine that protects against COVID, flu, and pneumonia

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  • Headline "protects against".

    Lede paragraph: "could one day protect against".

    Article: "in mice"

  • Car Wash Test on 53 leading AI models: "I want to wash my car. The car wash is 50 meters away. Should I walk or drive?"

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  • The most common pushback on the car wash test: "Humans would fail this too."

    Fair point. We didn't have data either way. So we partnered with Rapidata to find out. They ran the exact same question with the same forced choice between "drive" and "walk," no additional context, past 10,000 real people through their human feedback platform.

    71.5% said drive.

    So people do better than most AI models. Yay. But seriously, almost 3 in 10 people get this wrong‽‽

  • My vote goes to the antepenultimate one

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  • Darn, I came here to say this and didn't even bother to CTRL-F. You beat me to it.

  • My vote goes to the antepenultimate one

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  • I prefer Jan Böhmermann's version:

    Meine Damen und Herren und alle dazwischen und außerhalb

    (Ladies and gentlemen and all in between and beyond)

  • Climber on trial for leaving girlfriend to die on Austria's highest mountain

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  • Yeah, think about that while fingering A minor or picking a G-string.

  • DACH - Deutschsprachige Community für Deutschland, Österreich, Schweiz @feddit.org
    Slashme @lemmy.world

    Vorgehen gegen AfD Werbung im Briefkasten

  • Fountain Pens @lemmy.world
    Slashme @lemmy.world

    Got a mint rOtring sec-o-mat set!

  • What is this thing? @lemmy.world
    Slashme @lemmy.world

    Looks like a cutting board but has a hard insert

  • Mildly Infuriating @lemmy.world
    Slashme @lemmy.world

    Xiaomi's timer app tries to be cool and fails at functionality.

  • Dentistry @lemmy.ml
    Slashme @lemmy.world

    A deciduous molar under an electron microscope. What is the damage?

  • Technik @feddit.org
    Slashme @lemmy.world

    Elektronenmikroskop im Spielwarenladen gekauft!