#ul — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ul, aggregated by home.social.
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Znaczek „Amazon’s Choice” usypia czujność. Wadliwy czujnik czadu posłał ludzi do szpitala
Kupując sprzęt mający chronić nasze życie, często ufamy rekomendacjom wielkich platform e-commerce. Przypadek niezwykle popularnego czujnika tlenku węgla z Amazona udowadnia, że to ryzykowne podejście.
Urządzenie, które dumnie nosiło odznaczenie „Amazon’s Choice”, okazało się potencjalnie śmiertelnym zagrożeniem, prowadząc do hospitalizacji kilku osób.
Bestseller, który ignoruje tlenek węgla
Sprawa dotyczy popularnego (głównie za oceanem) czujnika marki Hembisen (model KH-158). Urządzenie było reklamowane jako sprzęt typu „4 w 1”, monitorujący m.in. temperaturę i stężenie gazów. Jak ustaliła amerykańska organizacja Consumer Reports, w kluczowych momentach sprzęt całkowicie ignorował obecność czadu, nie uruchamiając żadnego alarmu.
Skutki tej usterki okazały się dramatyczne. Tylko w lutym i marcu tego roku wady modelu doprowadziły do co najmniej czterech hospitalizacji. W jednym ze zbadanych przypadków dwójka nastolatków trafiła do szpitala z objawami ostrego zatrucia, podczas gdy podłączony do gniazdka czujnik nie wykazał absolutnie żadnych podwyższonych wartości gazu w pomieszczeniu. Po tych incydentach w sekcji opinii na Amazonie szybko zaczęły pojawiać się kolejne skargi na fałszywe alarmy i dolegliwości zdrowotne użytkowników.
Problem leży głębiej niż w jednym wadliwym produkcie
Zanim na jaw wyszły wady urządzenia, zdążyło się ono rozejść w potężnych ilościach. Co więcej, algorytmy sprzedażowe nagrodziły ten produkt oficjalnym znaczkiem „Amazon’s Choice”, co dla wielu klientów stanowiło ostateczny dowód na jego niezawodność. Po interwencji badaczy platforma usunęła feralny model oraz jego bliźniacze klony sprzedawane pod innymi nazwami (m.in. KH Alert, Koaabit czy Yojock).
Eksperci zwracają jednak uwagę, że problem w USA ma charakter systemowy. W Stanach Zjednoczonych nie istnieją obowiązkowe, federalne normy dla tego typu urządzeń, a odpowiedzialność za weryfikację spada na sprzedawców i samych klientów. Organizacje konsumenckie apelują, by wybierając sprzęt ratujący życie, unikać niezweryfikowanych producentów z platform marketplace. Zamiast tego należy szukać urządzeń posiadających dobrowolne, ale rygorystyczne certyfikaty bezpieczeństwa, takie jak normy UL (Underwriters Laboratories).
Kupując tanią elektronikę na globalnych platformach, Polacy powinni zachować szczególną ostrożność. Warto regularnie śledzić komunikaty polskiego UOKiK-u, który na bieżąco aktualizuje rejestr produktów niebezpiecznych, oraz bezwzględnie sprawdzać, czy sprowadzany sprzęt posiada prawdziwy, europejski certyfikat bezpieczeństwa CE, a nie tylko łudząco podobny znaczek China Export.
#Amazon #Bezpieczeństwo #ConsumerReports #czujnikCzadu #eCommerce #normyBezpieczeństwa #smartHome #tlenekWęgla #ULKoniec z patologią w polskim e-commerce? UOKiK zyska uprawnienia niczym służby specjalne
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Czy to jest ul? w sensie pszczoly (chyba) budujące sobie dom na drzewie?
Czy po prostu aż tak tam żerują że jest aż czarno?sory za jakość zdjęcia ale bałem sie blizej podejść :-)
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Of interest to #Canadians. With the Fedi skew to tech-knowledgeable people, this probably isn't news to many.
But if you're looking to buy #electrical stuff - power bars, extension cords, multi-outlet wall taps that convert 1 #socket into 3 or 2 into 6, all this sort of stuff - be careful where you buy it.
The big hardware stores / home centres sell this stuff, but at stupidly-high #prices. There's no reason a 10-foot extension cord should cost $25, or a power bar $40. So many people reasonably look for #cheaper alternatives.
A lot of #stores and sellers operating in the ... less-well-regulated portions of the market bring this stuff in cheap directly from sellers/manufacturers in China or other countries. Independent stores, mall kiosks, people selling out of their home - their products may not be approved for sale in Canada, because they don't have the necessary #safety #certification. And many of *those* products are actually downright dangerous. I've taken a lot of them apart and seen the many, many ways they can kill you or burn your house down.
Instead, get this stuff at #Dollarama. Their stuff is actually safety-certified by one of the required labs - #CSA, #UL, or most likely #ETL. It's approved for sale in #Canada. And it's still cheap. It might be a little more than guy-with-a-sales-counter-in-a-dilapidated-strip-mall, but not by enough to matter.
Other big chains might be okay - but I haven't personally verified those.
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I am amazed that a product sold and rated by a safety organization (USA UL) will list an electrical product rated a 15 amperes, 1,875 watts at 125 volts...but lists the maximum combined load for resistive lamps is 1,000 watts, and an electronic ballast load is 500 watts. I suspect they have not considered inductive loads for this device.
Now with more questions than answers, I open up one of these switching devices to look at the components and see if they have manufacturer's engineering data sheets that usually are more detailed and accurate.
So I open it up and this is definitely a defect condition IPC Level 1 soldering job. But the cube relay checks out, as they are a Taiwan company and did appropriate engineering testing and multiple certification listings. Oh well, I'll clean these up and put them into service.
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📢 Living Water: Poetry, Art and the Fight for Clean Rivers
💧 Exhibition at Pembroke College & the Cambridge University Library opens today.
https://www.pem.cam.ac.uk/college/news/living-water-poetry-art-and-fight-clean-rivers
https://www.lib.cam.ac.uk/stories/living-water-exhibition
#water #rivers #poetry #Cambridge #UL #pembroke1347 #LivingWater
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New #openaccess publication #SciPost #Physics
Ruelle-Pollicott resonances of diffusive U(1)-invariant qubit circuits
Urban Duh, Marko Žnidarič
SciPost Phys. 20, 061 (2026)
https://scipost.org/SciPostPhys.20.2.061 -
13 Travellers graduate from UL - amazing stuff. It really is inspirational to see.
https://www.rte.ie/news/munster/2026/0120/1554027-travellers-university-limerick/
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New #openaccess publication #SciPost #Physics
Density of states correlations in Lévy Rosenzweig-Porter model via supersymmetry approach
Elizaveta Safonova, Aleksey Lunkin, Mikhail Feigel'man
SciPost Phys. 20, 003 (2026)
https://scipost.org/SciPostPhys.20.1.003 -
„#Urchristen“ auf dem Weihnachtsmarkt: Vegetarisch mit antisemitischem Beigeschmack
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New #openaccess publication #SciPost #Physics Core
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
SciPost Phys. Core 8, 084 (2025)
https://scipost.org/SciPostPhysCore.8.4.084 -
New #openaccess publication #SciPost #Physics Core
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
SciPost Phys. Core 8, 084 (2025)
https://scipost.org/SciPostPhysCore.8.4.084 -
New #openaccess publication #SciPost #Physics Core
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
SciPost Phys. Core 8, 084 (2025)
https://scipost.org/SciPostPhysCore.8.4.084 -
New #openaccess publication #SciPost #Physics Core
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
SciPost Phys. Core 8, 084 (2025)
https://scipost.org/SciPostPhysCore.8.4.084 -
New #openaccess publication #SciPost #Physics Core
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
SciPost Phys. Core 8, 084 (2025)
https://scipost.org/SciPostPhysCore.8.4.084 -
https://www.europesays.com/pl/91987/ ASUS Prime AP303 – obudowy Mid Tower oparte na siatce. Obsługa płyt ATX i 360 mm AiO. Dostępna wersja ze szklanym bokiem #aio #asus #AsusPrimeAp303 #atx #MicroAtx #MiniITX #Nauka #NaukaITechnika #NaukaTechnika #obudowa #ObudowaKomputerowa #PL #Poland #Polish #Polska #Polski #Science #ScienceAndTechnology #ScienceTechnology #siatka #specyfikacja #SzkłoHartowane #Technika #Technology #ul
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He curated the current exhibition of #CuriousCures at the #Cambridge #UL, which continues to 6 Dec:
https://www.lib.cam.ac.uk/exhibitioncuriouscures& suggested this evocative reading list:
https://www.lib.cam.ac.uk/stories/curious-cures-reading-list
🧵 3/4
@bookstodon -
New #openaccess publication #SciPost #Physics
Automated evaluation of imaginary time strong coupling diagrams by sum-of-exponentials hybridization fitting
Zhen Huang, Denis Golež, Hugo U. R. Strand, Jason Kaye
SciPost Phys. 19, 121 (2025)
https://scipost.org/SciPostPhys.19.5.121 -
New #openaccess publication #SciPost #Physics
Automated evaluation of imaginary time strong coupling diagrams by sum-of-exponentials hybridization fitting
Zhen Huang, Denis Golež, Hugo U. R. Strand, Jason Kaye
SciPost Phys. 19, 121 (2025)
https://scipost.org/SciPostPhys.19.5.121 -
New #openaccess publication #SciPost #Physics
Automated evaluation of imaginary time strong coupling diagrams by sum-of-exponentials hybridization fitting
Zhen Huang, Denis Golež, Hugo U. R. Strand, Jason Kaye
SciPost Phys. 19, 121 (2025)
https://scipost.org/SciPostPhys.19.5.121 -
New #openaccess publication #SciPost #Physics
Automated evaluation of imaginary time strong coupling diagrams by sum-of-exponentials hybridization fitting
Zhen Huang, Denis Golež, Hugo U. R. Strand, Jason Kaye
SciPost Phys. 19, 121 (2025)
https://scipost.org/SciPostPhys.19.5.121 -
💡 Refonte d'une ressource sur DoRANum !
Zoom sur SWHID a été entièrement repensée.
👉 Découvrez comment l’identifiant SWHID permet d’identifier de manière unique les codes sources des logiciels et d’améliorer leur traçabilité.
https://doranum.fr/identifiants-perennes-pid/zoom-swhid_10_13143_3qqg-yx41/
#DoRANum #SWHID #FAIR #UL #INRIA -
New #openaccess publication #SciPost #Physics Core
Towards universal unfolding of detector effects in high-energy physics using denoising diffusion probabilistic models
Camila Pazos, Shuchin Aeron, Pierre-Hugues Beauchemin, Vincent Croft, Zhengyan Huan, Martin Klassen, Taritree Wongjirad
SciPost Phys. Core 8, 064 (2025)
https://scipost.org/SciPostPhysCore.8.4.064 -
New #openaccess publication #SciPost #Physics
Hydrodynamics without boost-invariance from kinetic theory: From perfect fluids to active flocks
Kevin T. Grosvenor, Niels A. Obers, Subodh P. Patil
SciPost Phys. 19, 071 (2025)
https://scipost.org/SciPostPhys.19.3.071 -
New #openaccess publication #SciPost #Physics
Generalized Gibbs ensembles in weakly interacting dissipative systems and digital quantum computers
Iris Ulčakar, Zala Lenarčič
SciPost Phys. 19, 068 (2025)
https://scipost.org/SciPostPhys.19.3.068 -
New #openaccess publication #SciPost #Physics Core
A field theory representation of sum of powers of principal minors and physical applications
Morteza Nattagh Najafi, Abolfazl Ramezanpour, Mohammad Ali Rajabpour
SciPost Phys. Core 8, 051 (2025)
https://scipost.org/SciPostPhysCore.8.3.051 -
Aktualności:
»Łódzki Festiwal Fantastyki Kapitularz 2025«Łódzki Festiwal Fantastyki Kapitularz odbędzie się w budynku Wydziału Filologicznego Uniwersytetu Łódzkiego w dniach 5-7 września 2025 r. Tegorocznym tematem jest "Mroczny, Magiczny Las". Fahrenheit objął wydarzenie patronatem medialny.
https://www.fahrenheit.net.pl/aktualnosci/lodzki-festiwal-fantastyki-kapitularz-2025/
#Fahrenheit_zin #Łódź #WydziałFilologiczny #festiwal #Kapitularz #FestiwalFantastyki #ŁódzkiFestiwalFantastyki #UŁ
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New #openaccess publication #SciPost #Physics
Integrable fishnet circuits and Brownian solitons
Žiga Krajnik, Enej Ilievski, Tomaž Prosen, Benjamin J. A. Héry, Vincent Pasquier
SciPost Phys. 19, 027 (2025)
https://scipost.org/SciPostPhys.19.1.027#NYU #UL #IMFM #FUBerlin #ParisSaclayUniversity #CNRS #CEASaclay #IPhT
#SimonsFellowsSociety -
By ClarkKent
Mawiza, an indigenous band from Wallmapu, a territory out of South America’s Mapuche Nation (spanning Chile and Argentina), has seen a sudden rise in recent years. Formed in 2014 as Nunca Seremos Dichosos, their second album, 2019’s Kollong, would go on to win them Chile’s version of the Grammy awards (called the Pulsar Award) for Best Metal Artist. In 2021, they adopted the name Mawiza and decided to sing entirely in their ancestral language, Mapuzungum, instead of Spanish. Their music garnered enough attention from Gojira, Mastodon, and Mercyful Fate to open shows for them in front of large crowds, and Gojira’s Joe Duplantier even collaborates on a song with them. To top it off, Seasons of Mist saw enough in Mawiza to sign them ahead of the release of their debut, ÜL. 1 They’ve got quite a story, and now we find out if they have the goods.
The word ÜL means chant, and that’s a good description for their overall musical approach. Lead singer Awka Mondaka delivers a chant-like vocal performance, and the guitars and drums play a start-stop rhythm that complements Mondaka’s chants. Gojira’s influence is undeniable in the form of pinch harmonics and slides that constitute major instrumental techniques. The intro to “Wingkawnoam” sets the stage for the harmonics, and hardly a minute passes on ÜL without hearing them. Mawiza uses the combination of pinch harmonics, guitar riffs, and heartbeat-like drums to create a groovy sound that’ll get you bouncing and swaying side to side. A couple of breakdowns (“Ngulutu,” “Nawelkünuwnge”) lend a metalcore touch, though their overall sound defies simple genre tags. Nature is also an important component, both thematically and aurally. With a good pair of headphones, you can hear birds tweeting (“Wingkawnoam”) and insects trilling (“Pinhza Ñi Pewma”).
While the early songs have moments of groove to keep things fun, it’s the middle of ÜL that shines the most. These tracks stand out as more melodic than the rest. “Mamüll Reke” is a slower, ballad-like tune, but it’s also one of the catchier tracks, with a chorus that’ll make you want to learn Mapuzungum so you can sing along. It’s the closest to having a traditional structure of any song on ÜL, which makes its selection as one of the lead singles no surprise. Perhaps my favorite is “Wenu Weychan,” which creates some great energy with a combination of thumping, heavy guitar riffs and powerful blast beats. In particular, Txalkan’s rhythmic drum work makes this so much fun that you want to get up and dance. Yet these songs also display some of Mawiza’s songwriting pitfalls. As much as I love “Wenu Weychan,” it goes on for two minutes too long with some weird instrumental shenanigans. “Nawelkünuwnge,” which opens with an enjoyable Pantera-like riff, eventually devolves into an unusual drop beat breakdown. Decisions like these kill the momentum on otherwise killer tunes.
The final third of ÜL highlights its true weaknesses. “Lhan Antü” and “Kalli Lhayay” feel like half-baked rough drafts instead of well-tuned, coherent tracks. There’s a moment three minutes into “Lhan Antü” where it begins to transform into a different, far more interesting song, but the rest of it sounds like aimless banging on the drum and noise-making with guitars. “Kalli Lhayay” makes use of cybernetic-sounding riffs and vocals that sound like Skynet hacked into Mawiza’s recording session. The conclusion of “Kalli Lhayay” demonstrates how grating those pinch harmonics can be from overuse–at the most extreme, they sound like a simulation of tinnitus. The inability to write memorable hooks and melodies leads to inconsistencies throughout ÜL.
Perhaps it’s my Western concept of music that is getting in the way of enjoying Mawiza’s ÜL as much as I should. I like hooks and melodies, and it’s not as if the album is entirely devoid of these things, but it’s not as hooky or melodic as I’d like. There’s plenty to enjoy, though. The energy on display provides almost enough momentum to carry throughout the entirety of the record. And even if the songwriting is uneven, the musicianship is top-notch. I’m not a guitar player, but I can appreciate the difficulty of playing pinch harmonics, especially to the extent that Mawiza employs them here. I see ÜL as a good start, and with some better songwriting, the next one could be something special.
Rating: 2.5/5.0
DR: 6 | Format Reviewed: 320 kbps mp3
Label: Seasons of Mist
Website: Bandcamp
Releases Worldwide: July 18th, 2025#25 #2025 #ChileanMetal #DeathMetal #Gojira #GrooveMetal #Jul25 #Mastodon #Mawiza #MercyfulFate #Metalcore #Pantera #Review #Reviews #SeasonsOfMist #UL
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New #openaccess publication #SciPost #Physics
Variational solution of the superconducting Anderson impurity model and the band-edge singularity phenomena
Teodor Iličin, Rok Žitko
SciPost Phys. 19, 006 (2025)
https://scipost.org/SciPostPhys.19.1.006 -
On Friday 4th July it will be exactly 100 years since the Shannon hydro-electric scheme was launched by the newly independent Irish free state. The University of Limerick is organising a special event to mark the occasion which has additional salience as we again face the need for state investment in renewable energy sources and grid infrastructure.
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📢 CTK vabi na predstavitev: Raziskovalna etika in integriteta na UL
📅 19. 6. 2025 ob 10:00
📍 CTK
🎙️ prof. dr. Nina Peršak o enoti UL za etiko in integriteto v znanosti
ℹ️ Brezplačno, samo v živo, prijava obvezna: https://docs.google.com/forms/d/e/1FAIpQLSe6ViBkplsQui8vs50kwidEAzDGAfQ4OGB40XVGJ4_-JnoANg/viewform -
New #openaccess publication #SciPost #Physics
Integrability of open boundary driven quantum circuits
Chiara Paletta, Tomaž Prosen
SciPost Phys. 18, 027 (2025)
https://scipost.org/SciPostPhys.18.1.027 -
New #openaccess publication #SciPost #Physics
Spectral properties of Levy Rosenzweig-Porter model via supersymmetric approach
Elizaveta Safonova, Mikhail Feigel'man, Vladimir Kravtsov
SciPost Phys. 18, 010 (2025)
https://scipost.org/SciPostPhys.18.1.010 -
New #openaccess publication #SciPost #Physics
Adiabatic gauge potential and integrability breaking with free fermions
Balázs Pozsgay, Rustem Sharipov, Anastasiia Tiutiakina, István Vona
SciPost Phys. 17, 075 (2024)
https://scipost.org/SciPostPhys.17.3.075 -
#CfP for the #conference "Crises in #Ibero-American Graphic #Narratives: #Utopia, Liminality & the #Anthropocene", which will take place at the University of Limerick (#UL) on May 2-3, 2024.
🗓️Deadline for Abstracts: January 15, 2024
📌Further Information:
https://avldigital.de/de/vernetzen/details/callforpapers/crises-in-ibero-american-graphic-narratives-utopia-liminality-the-anthropocene/ #fidavlnews @litstudies -
My Dividend Growth Portfolio - Final 2022 Recap
https://seekingalpha.com/article/4567289-dividend-growth-portfolio-final-2022-recap?source=feed
#WyoInvestments #AAPL #ABBV #AVGO #CINF #DHIL #FBIN #HCSG #INTC #LADR #MSFT #SBUX #SPGI #STOR #ABT #ADP #AFL #AMP #AOS #BBY #BLK #CAH #CME #CVS #DUK #EPD #HON #ICE #JNJ #LMT #MBC #MDT #MSA #NLY #NNN #OHI #PEP #PRU #PSX #SJM #SNA #SPG #TXN #WBA #BX #HD #MA #MO #PM #UL #O #V -
My Dividend Growth Portfolio - Final 2022 Recap
https://seekingalpha.com/article/4567289-dividend-growth-portfolio-final-2022-recap?source=feed
#WyoInvestments #AAPL #ABBV #AVGO #CINF #DHIL #FBIN #HCSG #INTC #LADR #MSFT #SBUX #SPGI #STOR #ABT #ADP #AFL #AMP #AOS #BBY #BLK #CAH #CME #CVS #DUK #EPD #HON #ICE #JNJ #LMT #MBC #MDT #MSA #NLY #NNN #OHI #PEP #PRU #PSX #SJM #SNA #SPG #TXN #WBA #BX #HD #MA #MO #PM #UL #O #V -
My Dividend Growth Portfolio - Final 2022 Recap
https://seekingalpha.com/article/4567289-dividend-growth-portfolio-final-2022-recap?source=feed
#WyoInvestments #AAPL #ABBV #AVGO #CINF #DHIL #FBIN #HCSG #INTC #LADR #MSFT #SBUX #SPGI #STOR #ABT #ADP #AFL #AMP #AOS #BBY #BLK #CAH #CME #CVS #DUK #EPD #HON #ICE #JNJ #LMT #MBC #MDT #MSA #NLY #NNN #OHI #PEP #PRU #PSX #SJM #SNA #SPG #TXN #WBA #BX #HD #MA #MO #PM #UL #O #V
