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Nyheder2021december01

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Presidential Pox, 1863
Researchers continue to debate whether US president Abraham Lincoln was coming down with smallpox as he delivered his famous Gettysburg Address, and if he had been immunized.
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Deep breath video can calm a child in 1 minute
Taking a few slow, deep breaths significantly reduces children's physiological arousal in everyday settings, research shows. It's one of the first things parents and teachers tell a child who gets upset : "Take a deep breath." But research into the effect of deep breathing on the body's stress response has overwhelmingly ignored young children—and studies done with adults typically take place in
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How we found a way to track alien marine species along South Africa's coast
Saldanha Bay harbor on the west coast of South Africa has long been an important point for global shipping routes. It was also the port of entry for an unwanted stow-away: the Mediterranean mussel. The species first appeared in South Africa in the late 1980s, and has spread along the west and south coasts. It has displaced native species, increased the areas covered by mussel beds, and damaged inf
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South Africa's cave-dwelling bats need more protection, which will keep people safe too
Caves are overlooked but essential parts of the natural world. Many animals use caves for shelter and for raising their young—bats among them. Caves are often home to multiple bat species. Bats may also use different caves for specific reasons; some travel to particular selected caves, known as maternity caves, just to have their pups. This means that large populations of bats rely on a small numb
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Patient Receives First 3D Printed Prosthetic Eye
(Photo: Moorfields Eye Hospital NHS Foundation Trust) A patient in London has received the first 3D printed prosthetic eye. National Health Service patient Steve Verze visited Moorfields Eye Hospital last week to receive the new left eye after it had been printed by Fraunhofer IGD, an international institute for applied research in visual computing. To print the eye, Fraunhofer devised a process
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Optomechanical dissipative solitons
Nature, Published online: 01 December 2021; doi:10.1038/s41586-021-04012-1 Stable, dissipative optomechanical solitons are realized using optical fields in a whispering gallery mode resonator by balancing the optomechanical nonlinearities with a tailored modal dispersion.
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Antiviral activity of bacterial TIR domains via immune signalling molecules
Nature, Published online: 01 December 2021; doi:10.1038/s41586-021-04098-7 The mechanism of Thoeris—a bacterial anti-phage defence system—is described in detail, revealing that bacterial TIR-domain proteins recognize infection and produce signalling molecules to execute cell death, akin to the roles of these proteins in plants.
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Cyclic evolution of phytoplankton forced by changes in tropical seasonality
Nature, Published online: 01 December 2021; doi:10.1038/s41586-021-04195-7 .Morphometric analysis of coccolith assemblages spanning the last 2,800,000 years suggests that the evolution of coccolithophores is linked to seasonality changes, paced by Earth's orbital eccentricity with implications for the carbon cycle.
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Accuracy mechanism of eukaryotic ribosome translocation
Nature, Published online: 01 December 2021; doi:10.1038/s41586-021-04131-9 Structural analysis of the Saccharomyces cerevisiae 80S ribosome trapped in an intermediate translocation state shows stabilization of codon–anticodon interactions by eukaryote-specific elements of the 80S ribosome, eEF2 and tRNA and demonstrates a major role for eEF2 in maintaining the directionality of translocation.
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Artificial intelligence aids intuition in mathematical discovery
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03512-4 Machine-learning tools have been used to assist the part of mathematical research that usually relies on human intuition and creativity — leading to two fundamental results in different areas of mathematics.
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Africa: tackle HIV and COVID-19 together
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03546-8 Failure to get COVID-19 vaccines to nations with high rates of uncontrolled advanced HIV puts people living with that virus at even greater risk, and could drive the emergence of coronavirus variants.
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Armoured dinosaurs of the Southern Hemisphere
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03572-6 Armoured dinosaurs are widely recognized for their tail weapons, which include paired spikes in stegosaurs and tail clubs in ankylosaurs. The discovery of Stegouros in Chile reveals a new kind of tail weapon, resembling an Aztec war club, and a lineage that split early from northern armoured dinosaurs.
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Earth's eccentric orbit paced the evolution of marine phytoplankton
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03549-5 Analysis of plankton fossils has revealed pulses of size diversity that are inextricably linked to the degree of circularity of Earth's orbits. Could this orbital variability provide a beat that dictates the rhythm of evolution?
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Hominin footprints at Laetoli reveal a walk on the wild side
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03469-4 Bipedalism is a defining feature of the human lineage, but not all hominin species walked in the same way. New data from a famous palaeoanthropology site reveal that at least two differently bipedal hominins roamed eastern Africa.
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Choreographing water molecules to speed up hydrogen production
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03511-5 A technical feat reveals subtle changes in water structure that can accelerate hydrogen production at an electrode interface. The catalytic process could be developed to help boost supply of this clean fuel.
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Robotic sample return reveals lunar secrets
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03547-7 A mission to unexplored lunar territory has returned the youngest volcanic samples collected so far. The rocks highlight the need to make revisions to models of the thermal evolution of the Moon.
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Atomic force microscope measures adhesion energy of the coronavirus
A study by Department of Energy researchers detailed a potential method to detect the novel coronavirus on surfaces. Scientists from Pacific Northwest, Oak Ridge, Sandia and Ames national laboratories used an atomic force microscope to measure how easily particles of the virus's spike protein attached to surfaces, a property called adhesion energy.
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COVID has had an impact on academics' well-being
The COVID pandemic has had a considerable impact on academics' work and well-being. They have had much less time to spend on their research. The Young Academy and the Dutch Network of Women Professors have conducted research into how the situation has been for academics. The two organizations have recommendations on how to mitigate potential adverse effects of the pandemic.
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Best Gaming Chairs For All-Day Play
Serious gamers will tell you that the key to any dynamic gaming session is comfort. So with that in mind, it makes sense that having a designated gaming chair will be crucial for long hours in front of your computer monitor or television screen. While on the surface most gaming chairs look pretty similar to your standard office chair, there are a number of cool features and premium bells and whis
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Climate change increasingly a bipartisan issue in Florida
Belief in climate change among Florida Republicans has climbed to nearly 9 out of 10 adults, apparently trending upwards, according to a new analysis of five sequenced surveys since 2019 conducted by researchers at Florida Atlantic University. The climate change issue may therefore no longer be an effective campaign trail theme for the state's party leaders as both parties gear up for the mid-term
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Har julgranen rättigheter?
Vi klär den, dansar runt den och slänger ut den. Ingen jul utan gran. Men har du funderat på om granen har några rättigheter? Det är ju definitivt så att vi förkortar julgranens liv med decennier – vilket också teoretiskt sett påverkar arter som lever i granen. Och det är många. Granen är favorit hos hundratals svamparter, som blodriska, bombmurkla, rödgul trumpetsvamp, rynkskinn och åtskilliga s
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Climate action can lessen poverty and inequality worldwide
If all countries adopted the same tax on carbon emissions and returned the revenues to their citizens, it is possible to keep the global temperature from rising more than 2 degrees Celsius while also benefiting well-being, reducing inequality, and alleviating poverty, according to a Rutgers study.
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Satellites to enable monitoring of CO2 emissions
Researchers have developed a model that can calculate individual countries' carbon dioxide emissions from fossil fuel burning using observations from space. The new results could be put to use within the Earth observation program Copernicus, when satellites will be sent into space in the coming years.
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Humpback whale song is for finding other whales, not courting them
A new paper is another feather in the cap for advocates of the sonar hypothesis, a proposal stating that singing humpbacks use their songs not to attract females but to actively explore their environments. Think of common courtship displays in the animal kingdom, like the flashy display of a peacock's tail or the treetop melody of a songbird's tune. Each is relatively constant. The brilliant colo
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How nitrate concentrations can be reduced in groundwater
High nitrate levels in groundwater are often caused by nitrogen fertilizers used in agriculture. Germany and other EU member states have already been taken to the European Court of Justice for non-compliance with the EU's Nitrate Directive. "This means intervention is urgently needed to protect the groundwater," explains Felix Ortmeyer, who works at the Department of Applied Geology/Hydrogeology a
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CT uncovers bone disease in Tyrannosaurus rex jaw
Researchers have identified bone disease in the fossilized jaw of a Tyrannosaurus rex using a CT-based, nondestructive imaging approach. The imaging method could have significant applications in paleontology, researchers said, as an alternative to fossil assessment methods that involve the destruction of samples.
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In children with multiple sclerosis, teriflunomide tempers lesion growth
A phase 3 clinical trial tested the safety and efficacy of teriflunomide, an oral immunomodulatory drug, in children with multiple sclerosis. Although the medication did not prevent disease relapses to a greater extent than placebo, the option for some patients to switch from placebo to teriflunomide before the end of the trial likely biased the results against treatment efficacy. The drug appeare
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The Wizard Is Rocked with 30 Foot Waves | Deadliest Catch
Stream Full Episodes of Deadliest Catch: discovery+ ► https://www.discoveryplus.com/show/deadliest-catch Discovery ► https://go.discovery.com/tv-shows/deadliest-catch/ #DeadliestCatch #Discovery #TheWizard Subscribe to Discovery: http://bit.ly/SubscribeDiscovery Follow Us on TikTok: https://www.tiktok.com/@Discovery We're on Instagram! https://instagram.com/Discovery Join Us on Facebook: https://
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Researchers model circadian clock neurons in a day-active animal
It's no secret that jet lag and night-shift work can wreak havoc on the way our body's internal clock syncs up our daily wake-sleep cycle, known as circadian rhythm, but now researchers say they are a step closer to understanding how the brain creates behavioral rhythms optimized for diurnal, rather than nocturnal, life.
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Heart repair and regeneration after a heart attack
Twenty years ago, clinicians first attempted to regenerate a failing human heart by injecting muscle myoblasts into the heart during a bypass operation. Despite high initial hopes and multiple experimental and clinical studies since then, outcomes have been neutral or marginally positive for a wide variety of attempts to remuscularize an injured heart. Yet hope remains that current and future stra
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Video: Rebuilding a retina
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03576-2 Age-related macular degeneration is the leading cause of blindness in older adults, but techniques are being developed to offset the worst of the damage.
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A visual guide to repairing the retina
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03575-3 People who develop the dry form of age-related macular degeneration (AMD) currently have no effective options for preserving their vision. But several promising therapeutic avenues are being explored that might just change that.
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Developing wafer-scale highly oriented graphene on sapphire
Researchers have used direct chemical vapor deposition (CVD) growth of wafer-scale, high-quality graphene on dielectrics for versatile applications. However, graphene synthesized this way has shown a polycrystalline film with uncontrolled defects, a low carrier mobility, and high street resistance; therefore, researchers aim to introduce new methods to develop wafer-scale graphene. In a new report
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Laser spectrometer precisely monitors atmospheric N2O and CO
Nitrous oxide (N2O) and carbon monoxide (CO) are important drivers in global warming. However, there are many difficulties in reliable monitoring, especially for N2O, as the concentration of N2O in atmospheric is only a few hundred parts per billion. However, the compatibility precision recommended by World Meteorological Organization (WMO) is much lower. Therefore, a solution that can offer more
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Requisites for computational modelling ?
Hi guys, I'm an undergrad cognitive psychology student and recently I came across the existence of the use of computational models to study phenomena. Since I've always been pretty keen on computer science I wanted to dive more into it but I couldn't find much material on the web about what knowledge you need to start developing these programs. I'm particularly interested in computational linguis
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Study suggests crop insurance plays small role in discouraging cover crop use in Indiana
A new study suggests that having crop insurance may have discouraged Indiana farmers' use of cover crops to promote soil health, although the results also suggest that the statistically significant effect is small. The findings could help researchers understand more about the unintended consequences of providing subsidies for crop insurance and encouraging more participation in the program.
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Magnons vs electrons: A new spin on computer processing
In 1965, Gordon Moore of Intel predicted that microprocessors would double in speed and capacity every couple of years. This prediction, now known as "Moore's Law," has with some modification in 1975 been reliably prophetic until now. We're fast approaching the limits of Moore's Law at the same time as demands on microprocessor performances are continuing to grow at an ever more rapid pace. The so
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Study confirms link between spatial and math skills
People use spatial skills to manipulate, organize, reason about, and make sense of spatial relationships in real and imagined spaces. Estimating how much leftover mashed potatoes will fit in a storage container requires spatial skills, as do fitting a car into a parking space or assembling a new piece of furniture.
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Mnemovirus
Nature, Published online: 01 December 2021; doi:10.1038/d41586-021-03577-1 Remember your training.
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How To Learn A New Language In As Little As Three Weeks
If you're a travel lover like us, one of the best parts of seeing the world is getting to know the people and all the amazing things that you can find. The coolest hole-in-the-wall, a gorgeous tourist-free beach, or the winding paths of an old-city bazaar filled with color are just a few of the places that you'll experience once you've left the beaten path. That's no simple feat though, and it he
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Early interventions could help counteract muscle loss
Weakening muscles are a natural part of the aging process, but for some people with a condition called sarcopenia the decline is abnormally fast. A new study suggests that the early stages of sarcopenia could be counteracted with timely interventions designed to preserve physical and cognitive function and manage chronic conditions.
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De-cluttering may not help people with dementia
A clutter-free environment may not help people with dementia carry out daily tasks — according to a new study. Researchers studied whether people with dementia were better able to carry out tasks, such as making a cup of tea, at home – surrounded by their usual clutter – or in a clutter-free environment. They were surprised to find that participants with moderate dementia performed better when su
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Which side is which? How the brain perceives borders
Researchers have made headway into understanding how the brain decides which side of a visual border is a foreground object and which is background. The research has sheds light on how areas of the brain communicate to interpret sensory information and build a picture of the world around us.
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Which glioblastoma patients will respond to immunotherapy?
Scientists have discovered a new biomarker to identify which patients with brain tumors called glioblastomas — the most common and malignant of primary brain tumors — might benefit from immunotherapy. The treatment could extend survival for an estimated 20% to 30% of patients. Currently, patients with glioblastoma do not receive this life-prolonging treatment because it has not been fully unders
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Sensor tells coral (and human) sperm to swim
Corals, sea urchins, and even humans share a molecular pathway governing sperm motility, research finds. The mechanism is regulated by a pH sensor that signals when sperm are to begin swimming . The work appears in the journal Proceedings of the National Academy of Sciences . Climate change, which is making the oceans more not only warmer but also more acidic, and localized disturbances, such as
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Students who cheat don't just have to worry about getting caught, they risk blackmail and extortion
When students use a commercial contract cheating service, getting caught by their lecturers is just one of many serious consequences that could damage them and those who trust them. They also expose themselves to blackmail and extortion. Despite these risks, one in ten students at Australian higher education institutions have used a commercial cheating service to complete an assessment, according
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What influences the rise of influencers?
A model to describe the formation of online communities and rise of influencers on social media platforms, based on the quality of user generated content, is reported in a study published in Nature Communications. The findings could improve our understanding of how social media influencers arise.
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The point of no return: Chromatin enforces cell fate decisions
Stem cells balance self-renewal with differentiation into mature cells. A fundamental and intriguing question is when during the process of maturation a cell reaches a "point of no return," losing its capacity to self-renew and becoming committed to differentiating into a specific cell type.
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UN migration agency: COVID has 'radically altered' mobility
The U.N. migration agency says the coronavirus pandemic has "radically altered" mobility around the world, projecting in a new report that the growth in the number of international migrants is likely to remain weaker as long as travel and other restrictions remain.
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Intermittent BRAF inhibition in advanced BRAF mutated melanoma results of a phase II randomized trial
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-26572-6 Whether intermittent strategies of delivering drugs can improve cancer patients survival is still unclear. Here, the authors reports the results of a randomized phase II clinical trial aimed to compare the efficacy and safety of two dosing regimens (continuous and intermittent) of vemurafenib and cobimetinib
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Kinetic and structural mechanism for DNA unwinding by a non-hexameric helicase
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27304-6 UvrD is a model helicase from the non-hexameric Superfamily 1. Here, the authors use optical tweezers to measure directly the stepwise translocation of UvrD along a DNA hairpin, and propose a mechanism in which UvrD moves one base pair at a time, but sequesters the nascent single strands, releasing them afte
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Histone variant H2A.Z regulates zygotic genome activation
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27125-7 During embryogenesis, the genome becomes transcriptionally active in a process known as zygotic genome activation (ZGA); how ZGA is initiated is still an open question. Here the authors show histone variant H2A.Z deposition precedes RNA polymerase II binding on chromatin, before ZGA. H2A.Z loss causes transc
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Comprehensive targeting of resistance to inhibition of RTK signaling pathways by using glucocorticoids
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27276-7 TNF signalling was reported to mediate resistance to EGFR inhibition in non-small cell lung cancer (NSCLC). Here, the authors examine the efficacy of a broad versus focused targeting of this resistance, and they show that a broad inhibitor of inflammation, prednisone is the most effective.
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Phase shift in skyrmion crystals
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27083-0 Skyrmions are a type of topological spin texture, which can exist as both an isolated state, and as a skyrmion crystal. Here, Hayami et al present a theoretical study of phase shifts in skyrmion crystals, showing how such phase shifts can lead to other crystalline topological spin textures.
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Mechanism of Rad26-assisted rescue of stalled RNA polymerase II in transcription-coupled repair
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27295-4 Here the authors provide models of RNA polymerase II bound to the yeast CSB ortholog Rad26 in different nucleotide states; explain how Rad26 domain motions help the polymerase progress past DNA lesions; and interpret the effects of CSB-associated disease mutations.
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Augmenting zero-Kelvin quantum mechanics with machine learning for the prediction of chemical reactions at high temperatures
Nature Communications, Published online: 01 December 2021; doi:10.1038/s41467-021-27154-2 Computational material design often does not account for temperature effects. The present manuscript combines quantum-mechanics based calculations with a machine-learned correction to establish a unified thermodynamics framework for accurate prediction of high temperature reaction free energies in oxides.
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FLOATER: A Tool-Kit for evaluating Claims
This is a re-post from the Thinking is Power website maintained by Melanie Trecek-King where she regularly writes about many aspects of critical thinking in an effort to provide accessible and engaging critical thinking information to the general public. Please see this overview to find links to other reposts from Thinking is Power. A Life Preserver for Staying Afloat in a Sea of Misinformation A
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Forskere finder mulig akilleshæl i coronavirus
Nyopdagede ionkanaler i coronavirus kan være den akilleshæl, som forskere har ledt efter længe. Faktisk findes der allerede lægemidler, som er rettet mod ionkanalerne. De lægemidler tester danske læger i øjeblikket på patienter med COVID-19.
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Is Precision Psychiatry Realistic?
Fig. 1 (Fernandes et al., 2017) . Domains related to 'precision psychiatry'. " The right drug for the right patient " was a catch phrase in the early years of the personalized medicine movement ( 2000 ), represented by the emerging field of pharmacogenomics . No more "one size fits all" prescribing — the Human Genome Project will allow doctors to predict how you will respond to any given medicati
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Hållbar kost för människa och planet
Vår livsmedelsproduktion och konsumtion är drivande krafter för ökade utsläpp av växthusgaser och påverkar även vår hälsa och risk för dödlighet. Förekomsten av hjärt-kärlsjukdom, diabetes och cancer är hög och ökar stadigt. Forskare från Lunds universitet och RISE har i en ny studie kunnat visa på värdefulla hälsofördelar med minskad risk för tidig död orsakad av hjärt-kärlsjukdom och cancer, om
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Save An Extra 20% On This Awesome Can Opener That's On Sale For Cyber Week
We're all trying to figure out how to waste less, whether it's buying less packaging or turning trash into fuel . And if you host events, professionally or otherwise, you know that drinks, and the plastic cups they're consumed in, are a major driver of waste and trash. The New Draft Top® 3.0: Easy Can Opener is a game-changer that turns each can into its own cup and cuts down waste, and now you c
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How obesity damages the skeletal muscle metabolism
A decline in metabolism and endurance of skeletal muscle is commonly observed in obese patients, but the underlying mechanism is not well-understood. A research team uncovers a new mechanism to explain how obesity jeopardizes the functions of skeletal muscle and provides a potential treatment against the disease.
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Polymers with helical blocks
Polymers, the basis of all plastics, usually do not have an ordered structure, in contrast to biopolymers such as proteins. A team of researchers has now developed a polymer that can be differentiated into folded (ordered) and unfolded (disordered) domains using UV irradiation. The team's work offers new possibilities for developing functional soft materials.
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Waterfall sounds used as a telltale sign of water loss
Waterfalls have a specific threshold of water flow that must be maintained to preserve their characteristic sound and appearance, according to research that used audio recordings and images to monitor waterfalls in Europe. With this new method, scientists can use a waterfall's sound and appearance to track changes in its flow as human interventions and climate change impact water levels, according
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Arctic krill respond to visual changes during Arctic night
New research finds that Arctic krill have a biological response to changes in light. When it is lightest in the Arctic polar night, usually around the middle of the day known as midday twilight, the krill know to swim down to the bottom in order to hide from predators. When it is darkest in the Arctic polar night, that's when they swim to the surface in search of bioluminescent food.
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Sizing up the challenges in extracting lithium from geothermal brine
For geothermal fields around the world, produced geothermal brine has been simply injected back underground, but now it's become clear that the brines produced at the Salton Sea geothermal field contain an immense amount of lithium, a critical resource need for low-carbon transportation and energy storage. Demand for lithium is skyrocketing, as it is an essential ingredient in lithium-ion batterie
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A rocky fate for greenhouse gases
Researchers use synchrotron X-ray total scattering and quantum computer simulations to model the crystal structure of amorphous magnesium carbonate as a function of temperature. As a precursor to crystalline magnesium carbonate hydrate materials, which can trap atmospheric carbon dioxide, understanding its properties can help lead to effective carbon sequestration methods to fight global warming.
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Method to reveal undesired biological effects of chemicals
How do pollutants and other chemicals that we are exposed to affect our health? Researchers have applied a method to identify the proteins in the body affected by chemicals. The method can be used to discover at an early stage whether a substance has biological effects in an organism.
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Breakthrough in understanding motor neuron disease
Researchers have made a major discovery in understanding motor neuron disease (MND). The research team has found that MND has 4 distinct patterns of changes in electrical signals that can be identified using EEG (electroencephalography).
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Jaws of defeat: Anglers' emotions toward shark depredation is key to conservation
In a broad-scale study researchers quantified the emotional and behavioral responses to shark depredation in recreational fisheries. The study found that anglers, and especially recreational fishing guides, who experienced depredation were more likely to have a negative response towards sharks and were thus more likely to target sharks for additional harvesting.
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Doing photon upconversion a solid — Crystals that convert light to more useful wavelengths
Solid-solution organic crystals have been brought into the quest for superior photon upconversion materials, which transform presently wasted long-wavelength light into more useful shorter wavelength light. Scientists revisited a materials approach previously deemed lackluster — using a molecule originally developed for organic LEDs — achieving outstanding performance and efficiency. Their findi
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From ambition to biodiversity action: Time to hold actors accountable
To achieve global goals for biodiversity conservation, national level implementation must be significantly improved. National policy instruments need to precisely define effective actions and the actors responsible for implementation. Accountability needs to be ensured through systematic monitoring of progress. These recommendations are at the core of a 3-step framework proposed by an internationa
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Accelerated renewables-based electrification paves the way for a post-fossil future
Cost-slashing innovations are underway in the electric power sector and could give electricity the lead over fossil-based combustion fuels in the world's energy supply by mid-century. When combined with a global carbon price, these developments can catalyse emission reductions to reach the Paris climate targets, while reducing the need for controversial negative emissions, a new study finds.
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New findings on bacteria that increase risk of pancreatic cancer
Bacteria from the digestive system seem to have the potential to cause damage to pancreatic cells, increasing the risk of malignant tumors. Now for the first time, live bacteria from cystic pancreatic lesions that are precursors to pancreatic cancer, have been analyzed by researchers. The study can lead to prophylactic interventions using local antibiotics.
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Bringing 400-million-year-old fossilized armored worms to 'virtual' life
Scientists have documented the discovery of two new species of fossilized armored worms in Australia — Lepidocoleus caliburnus and Lepidocoleus shurikenus — dating from about 400 million years ago. Then, using the micro-CT imaging capabilities of the MU X-ray Microanalysis Core facility, the researchers were able to develop first-of-its-kind digital 3D-models of the species' individual armor pla
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10 Highly Rated Language Apps On Sale At Cyber Week Prices
If you've been wanting to learn a new language, but haven't made the commitment yet, now is a great time to land some of the very best language subscription apps and save big. We've tracked down some of the most highly rated language learning apps that have special Cyber Monday deals available for new customers. Make sure to grab these quickly because the savings will only be around for a limited
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Where are beliefs stored?
I have read articles on people activating their amygdala over a picture of someone of another skin color. Know a little bit of neuroscience but not enough. What determines the amygdala (or insular) to be activated? submitted by /u/30whyamihere [link] [comments]
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What causes people to repeatedly lie about such stupid, ridiculous things?
In the 1960's, five teenagers boarded a rubber raft and set out a mile out to sea to skin dive. The five teenagers never came back home. Early the next morning, one of the teenagers, Brian McCleary, was found sleeping on a beach. As soon as he woke up in a naval hospital, he told everyone that he witnessed, in great detail, a fictional character, 'sea serpent' or 'Cecil the seasick sea serpent' f
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Summer rains in American Southwest are not your typical monsoon
Monsoons are continental weather events produced when intense summer sunlight heats land more than ocean. But new supercomputer simulations show that North America's only monsoon works differently. The North American monsoon, which drenches western Mexico and the American Southwest each summer, is generated when the jet stream collides with the Sierra Madre mountains, which diverts it southward an
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Is there a threshold on the number of subjects the brain can actually learn (and retain) per day or how can one optimize their learning?
The ADHD is strong in me and there are a number of things I'd like to learn/improve on daily. But how do I know I'm not spreading my brain too thin and wasting time? If I do a piano lesson and then a chess lesson and then a read a non-fiction book – is my brain going to get 'exhausted' and forgot/ not retain stuff from earlier in the day? Does the brain act like muscles after the gym where it nee
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[Academic] Looking for research subjects for a study on emotional responses to sound! Volunteer at UNLV
Want to participate in science? At the UNLV Music Lab (Principal Investigator: Erin Hannon) we study how different people respond to music, language, and the many sounds in the world. We are currently recruiting for a research study in which we will ask you questions about which sounds you like and dislike, your musical experiences and habits, and your general auditory experiences, and you will d
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100 household task benchmarks are like robotics 'North Star'
Researchers have created benchmarks for 100 everyday household tasks for robot assistants, creating a path for more useful agents. Robots that do everything from helping people get dressed in the morning to washing (and putting away) the dishes have been a dream for as long people have uttered the words "artificial intelligence." But, in a field where the state of the art currently rests far shor
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A Kalirin missense mutation enhances dendritic RhoA signaling and leads to regression of cortical dendritic arbors across development [Neuroscience]
Normally, dendritic size is established prior to adolescence and then remains relatively constant into adulthood due to a homeostatic balance between growth and retraction pathways. However, schizophrenia is characterized by accelerated reductions of cerebral cortex gray matter volume and onset of clinical symptoms during adolescence, with reductions in layer 3…
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Genomic evidence for inbreeding depression and purging of deleterious genetic variation in Indian tigers [Evolution]
Increasing habitat fragmentation leads to wild populations becoming small, isolated, and threatened by inbreeding depression. However, small populations may be able to purge recessive deleterious alleles as they become expressed in homozygotes, thus reducing inbreeding depression and increasing population viability. We used whole-genome sequences from 57 tigers to estimate individual…
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Peripheral tolerance by Treg via constraining OX40 signal in autoreactive T cells against desmoglein 3, a target antigen in pemphigus [Immunology and Inflammation]
Antigen-specific peripheral tolerance is crucial to prevent the development of organ-specific autoimmunity. However, its function decoupled from thymic tolerance remains unclear. We used desmoglein 3 (Dsg3), a pemphigus antigen expressed in keratinocytes, to analyze peripheral tolerance under physiological antigen-expression conditions. Dsg3-deficient thymi were transplanted into athymic mice to c
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Temporal self-compression: Behavioral and neural evidence that past and future selves are compressed as they move away from the present [Psychological and Cognitive Sciences]
A basic principle of perception is that as objects increase in distance from an observer, they also become logarithmically compressed in perception (i.e., not differentiated from one another), making them hard to distinguish. Could this basic principle apply to perhaps our most meaningful mental representation: our own sense of self?…
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Nanchung and Inactive define pore properties of the native auditory transduction channel in Drosophila [Neuroscience]
Auditory transduction is mediated by chordotonal (Cho) neurons in Drosophila larvae, but the molecular identity of the mechanotransduction (MET) channel is elusive. Here, we established a whole-cell recording system of Cho neurons and showed that two transient receptor potential vanilloid (TRPV) channels, Nanchung (NAN) and Inactive (IAV), are essential for…
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Structural basis for substrate specificity of heteromeric transporters of neutral amino acids [Physiology]
Despite having similar structures, each member of the heteromeric amino acid transporter (HAT) family shows exquisite preference for the exchange of certain amino acids. Substrate specificity determines the physiological function of each HAT and their role in human diseases. However, HAT transport preference for some amino acids over others is…
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Best Crypto Gifts for Bitcoin Lovers in 2022
The world of cryptocurrency has its own memes and slang. Its members are a dedicated community willing to endure the uncertainty and risk of the cryptocurrency investing roller coaster. Like sports fanatics, these HODL-ing risk takers like to demonstrate their passion for blockchain technology with hats, shirts, and various tchotchkes. As the holiday season arrives, we've assembled a list of cryp
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Enhancing the workhorse: Artificial intelligence, hardware innovations boost confocal microscope's performance
To push confocal imaging to an unprecedented level of performance, scientists have invented a 'kitchen sink' confocal platform that borrows solutions from other high-powered imaging systems, adds a unifying thread of 'Deep Learning' artificial intelligence algorithms, and successfully improves the confocal's volumetric resolution by more than 10-fold while simultaneously reducing phototoxicity.
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Can genetically engineered seeds prevent a climate-driven food crisis?
This is a re-post from Yale Climate Connections by Samantha Harrington When John Boelts sows acres of cotton seed on his farm in Yuma, Arizona, he does so knowing that the fields will be free of an invasive pest called pink bollworm. For nearly a century, the small pink striped caterpillars terrorized cotton fields in the U.S. The adult bollworm, a gray moth, laid its eggs on cotton bolls, and th
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Healthy gorilla gut microbiomes don't all look alike
A new study finds significant diversity among gorilla gut microbiomes, suggesting that what constitutes a "healthy" microbiome can vary between individuals. The findings move researchers closer to developing tools that can use the microbiome to diagnose potential health challenges for gorillas in human care. The gut microbiome refers to the ecosystem of microbial organisms that exist in the gastr
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Neonic pesticides can harm bees for generations
A new study finds that pesticides directly affect bee health and the effects from past exposure can carry over to future generations. The study, published in the journal Proceedings of the National Academy of Sciences , suggests that bees may require multiple generations to recover from even a single application. Bees play a critical role in agricultural ecosystems, providing pollination for many
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Build your own office podcast studio
Converting newly emptied office spaces into podcast studios poses noise challenges not previously realized before hybrid offices began. Experts recommend considering location, nearby noise sources, and ways to absorb sound to make a studio effective.
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Normalt blodsocker sänker cancerrisken vid fetma och diabetes typ 2
Varaktig viktminskning tycks i sig skydda mot cancer, men med bra glukoskontroll blir antalet cancerfall radikalt färre. Det visar en studie från Göteborgs universitet. Att fetma är en riskfaktor för både diabetes typ 2 och flera typer av cancer är ett känt faktum. Likaså att avsiktlig viktminskning, genom exempelvis fetmakirurgi, ofta leder till att personen blir fri från diabetessymtom och uppn
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Potential of demand response in reducing CO2 emissions
Demand response (DR) programs incentivize electric grid users to consume less power during peak hours, relieving grid load and reducing CO2 emissions. However, its potential as a practical approach remains unverified. Now, scientists propose an AI-based approach to estimate the DR potential per household based on real-world user behavior, demonstrating that DR programs are beneficial for customers
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Those that game together, stay together
Play is important for the development of complex social, emotional, physical, and cognitive skills. Play provides young individuals with a safe space to practice new behaviors without grave repercussions. While most animals engage in play, only humans engage in rule-based games. Which kinds of games people play — competitive or cooperative — may depend on their cultural background. In a new stud
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Baby vaccination declined during the pandemic
A number of factors during the pandemic made it less likely that infants received their recommended vaccinations in the first months of their lives, a new study reveals. The factors include negative impacts from the pandemic during pregnancy, health care experiences, and reports of discrimination. The study serves as an indicator that a focus on vulnerable pregnant women, especially during a publ
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