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  • Could TRAPPIST-1e Be Earth 2.0?

    Uncategorized science
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    4 Votes
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    C
    Another Astrum, another banger. What to you think? Could we find another Earth-like planet within our lifetime? Or any life later at all? Maybe with in a far-off exoplanet or even within the Sol System (out solar system)? Well, we can only hope. I certainly have a feeling that we may.
  • 8 Votes
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    M
    The 20-foot-long Ran submersible used pulsed sound waves (advanced multibeam sonar) on the ice to map its features, but because of its subantarctic location, Wåhlin and her team couldn’t communicate with the AUV or track its movements with GPS. After 14 missions—some lasting a couple hours and others stretching longer than a day—Ran mapped around 50 square miles of ice, and the structures imaged were more complex than anyone imagined. “The mapping has given us a lot of new data that we need to look at more closely,” Wåhlin said in a press statement. “It is clear that many previous assumptions about melting of glacier undersides are falling short. Current models cannot explain the complex patterns we see. But with this method, we have a better chance of finding the answers.” The secret structures are melt patterns in the underside of the ice shelf. These surveys were conducted in 2022, and the team returned earlier this year to see what changes to the ice shelf had occurred. That’s when Wåhlin and her team’s worst fears were realized—Ran didn’t emerge at the pre-planned rendezvous point. The team suspects that the AUV either ran aground or became the target of some curious seals. Yeah, probe broke under the ice shelf and didn’t come back. I have to say, Popular Mechanics has become complete shit with headlines like this. I mean, the article is fine for what it is, a story about a group using and self piloting submersible to study glacial melting from below. But that headline is one of the worst click-bait pieces of shit I’ve ever read.
  • 29 Votes
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    S
    What if our physics are just part of the simulation? What if actual physics are just obscured by the simulation and we just need to go deeper to simulate reality. The very nature of unfalsifiability aside, I understand that we cannot currently make a plan to simulate the universe- we dont have the hardware for it. Am I missing anything more profound? This may well be over my head.
  • 17 Votes
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    1
    Picobarn? Why not square picometers? Even Wikipedia says a barn is a non-SI unit
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    C
    SHOCKED I SAY!!!
  • Your ZIP Code Could Reveal Your Risk of Dementia

    Uncategorized science
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    Stark racial and ethnic disparities in Alzheimer’s disease (AD) and related dementias (ADRD) have been documented, largely attributable to the impact of social and structural drivers of health. The structural drivers of health include the institutions, practices, cultural norms, and policies that dictate the inequitable distribution of the social determinants of health (SDoH), defined as the conditions where people live, work, play, and age, and consist of various forms of systemic oppression including structural racism. The overlapping effects of race and place on health have been studied extensively, with an increased focus on the operationalization and measurement of “place-effects” on health through neighborhood characteristics and the built environment. Previous studies have demonstrated associations of place-based SDoH with cardiometabolic health and cognition. However, research studying the relationship of place-based SDoH with ADRD-associated neuroimaging and plasma biomarkers is still limited. Biomarkers serve as proxies for underlying pathological changes and can play a crucial role in the detection of etiology underlying cognitive decline and ADRD. More specifically, neuroimaging biomarkers of brain structure and function, assessed using magnetic resonance imaging (MRI), are helpful in the early detection of disease processes and prognosis for progression. Additionally, numerous blood-based biomarkers have recently emerged as candidates for improved diagnosis and management of ADRD, along with a demonstrated need to examine varying SDoH profiles in correlation with these biomarkers due to observed differences in biomarker levels by medical comorbidities. Plasma biomarkers have been associated with brain health differences assessed with neuroimaging, most notably with lower total gray matter brain volume and higher amyloid deposition. Importantly, abnormal plasma amyloid β 42/40 ratio helps in identifying those with higher dementia risk, while phosphorylated-Tau 181 has been shown to increase with clinical severity of AD.
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    Chemists from the University of Warwick and Monash University have discovered a powerful new antibiotic called pre-methylenomycin C lactone, found as an intermediate compound in the production of methylenomycin A[^1]. This molecule shows remarkable potency against drug-resistant bacteria, demonstrating over 100 times greater activity against Gram-positive pathogens compared to methylenomycin A[^2]. The compound proves particularly effective against Methicillin-resistant Staphylococcus aureus (MRSA) and Vancomycin-resistant Enterococcus (VRE), with no observed resistance development in Enterococcus faecium under conditions where vancomycin resistance typically emerges[^1]. “Methylenomycin A was originally discovered 50 years ago and while it has been synthesized several times, no-one appears to have tested the synthetic intermediates for antimicrobial activity!” said Professor Greg Challis[^2]. The team identified the compound by deleting specific genes in Streptomyces coelicolor, a well-studied soil bacterium[^1]. The researchers have developed a scalable synthetic route for producing pre-methylenomycin C lactone, positioning it for further development as a potential treatment against antimicrobial-resistant infections[^1]. [^1]: Medical Dialogues - Scientists discover hidden antibiotic 100 times stronger against superbugs [^2]: University of Warwick - New antibiotic for drug-resistant bacteria found hiding in plain sight
  • 52 Votes
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    I love that guys channel, he does some crazy cool stuff with things you can easily source as an at home consumer. I think my favorites are making cooling fibers with a cotton candy machine and the micro-camper build he did on a zero turn lawn mower.
  • 0 Votes
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    Jürgen HubertJ
    @elduvelle @Nonya_Bidniss Speaking from my own experience, the scientists who get to stay in one place with their family / friends / roots are very lucky, and very rare.
  • The ear does not do a Fourier transform

    Uncategorized science
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    This post did not contain any content.
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    Researchers at Tohoku University have developed a method to detect dark matter by connecting quantum sensors in optimized networks, potentially solving one of physics’ greatest mysteries[^1]. The quantum network approach aims to boost sensor sensitivity to detect the faint traces dark matter may leave behind, though it cannot be directly observed[^2]. Dark matter remains elusive despite making up approximately 27% of the universe[^3]. This new detection strategy involves linking superconducting qubits - typically used in quantum computers - into various network configurations including ring, line, and star patterns to amplify weak signals[^3]. The team tested their approach using systems of four and nine qubits, applying “variational quantum metrology” to optimize how quantum states were prepared and measured[^3]. To improve accuracy, they used Bayesian estimation to filter out noise from the measurements[^3]. [^1]: Lifeboat - Scientists Propose Quantum Network to Finally Detect Universe’s Mysterious Missing Substance [^2]: ScienceDaily - New quantum network could finally reveal dark matter [^3]: Sciencesprings - From Tohoku University Via SciTechDaily: Scientists Propose Quantum Network to Finally Detect Universe’s Mysterious Missing Substance
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    A
    Can anyone find the pdf for the full paper?
  • 8 Votes
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    J
    The whole process is based on realizing that our past assumptions were wrong. Well… or simply improving the understanding. AFAIK good science doesn’t actually assert “rightness” or “wrongness;” rather, it proposes ‘this theory seems the best working fit,’ with the understanding and open-endedness that it can always be improved, tweaked, or even completely replaced by a better theory.
  • 0 Votes
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    umwelt.infoU
    umwelt.info: „Hallo Fediverse!“ Wir sind jetzt auch hier, Mutterschiff @Umweltbundesamt Was erwartet euch auf diesem Kanal? Wir posten Wissenswertes zu unserem Portal, unseren Datenquellen und Datensätzen. Wir geben Veranstaltungs-Tipps und teilen Good News. Mit eurem Feedback und euren Coding-Skills könnte ihr DIE Suchmaschine für Umwelt- & Naturschutz-Wissen in Deutschland mitgestalten: Wir zählen auf Euch!#openData #Suchmaschine #Naturschutz #Umweltschutz #science
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    While other research groups had successfully transmitted quantum information alongside classical data streams in simulations of the internet, Kumar’s team was the first to teleport a quantum state alongside an actual internet stream.
  • We Might Not Be So Strange

    Uncategorized science
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    This post did not contain any content.
  • Science Must Decentralize

    Uncategorized science
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    反いじめ戦隊A
    Take your time then. I’m saying the internet as you know it is centralized by design. CICN isn’t. Science needs to use decentralized designs.
  • 4 Votes
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    J
    Ahh I overlooked the “polyhedron” part. Thanks!
  • 54 Votes
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    S
    Have you not read How To Deafen A Moth? It is the sequel to How To Train A Dragon.