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Nyheder2020december31

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Kig op: 2021 byder på seks særlige begivenheder på nattehimlen – og én ved dagslys
Året byder blandt andet på delvis solformørkelse, satellit-tog og kæmpe stjerneskudsshow.
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Neuralink: Meet your new robot brain
submitted by /u/imkaan [link] [comments]
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How to write personal statement for masters with no experience directly in field?
One of the masters programs I'm applying to takes people from all backgrounds and doesn't require specific coursework. I got my bachelors in psychology (3.9 gpa) and did clinical work for 6 months before deciding to switch to research and more cognitive specially I'm interested in decision making and belief formation. Should I mention books I've read? I'm not quite the direction I should go in an
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In the worst year of our generation, how can we work to combat our negative bias?
Negativity bias is especially relevant in the landmark year of 2020 because it causes our emotional response to negative events to feel amplified compared to similar positive events. It's why you feel down when good things are happening. It causes our emotional response to negative events to feel amplified compared to similar positive events. source: https://en.wikipedia.org/wiki/Negativity_bias
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See live cells with seven times greater sensitivity using new microscopy technique
Experts in optical physics have developed a new way to see inside living cells in greater detail using existing microscopy technology and without needing to add stains or fluorescent dyes.
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Spontaneous robot dances highlight a new kind of order in active matter
Researchers have proposed a new principle by which active matter systems can spontaneously order, without need for higher level instructions or even programmed interaction among the agents. And they have demonstrated this principle in a variety of systems, including groups of periodically shape-changing robots called 'smarticles.'
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Why 2021 could be turning point for tackling climate change
This year could be a "make or break" moment in the fight against global warming.
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See live cells with 7 times greater sensitivity using new microscopy technique
Experts in optical physics have developed a new way to see inside living cells in greater detail using existing microscopy technology and without needing to add stains or fluorescent dyes.
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Daniel M. Tellep, Engineer Who Steered Lockheed's Growth, Dies at 89
A pioneer of aerospace and missile systems, he rose to chief executive, then initiated the Lockheed-Martin merger that formed the world's largest military contractor.
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Life After Death(?): From Strokes to Sci-Fi
Death is not a singular event, as implied when we refer to the "time of death" or "moment of death". It is a relatively long, drawn out, active process: these terms merely simplify and provide a hard boundary. Not everything in the brain (or the rest of the body) dies at the same time, at […]
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How Infectious Diseases Affect the Brain
Infectious agents such as HIV and SARS-CoV-2 often behave differently in the brain than in the circulation or other organs, complicating matters for scientists working to stop neurotropic infectious diseases.
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The Boston Dynamics robots are surprisingly good dancers
At this point, we'll watch the Boston Dynamics robots do basically anything. In their latest YouTube adventure, the squad of robots dances to the 1962 Contours classic "Do You Love Me?" and it's as weird as it is adorable. The video features a pair of the company's vaguely humanoid Atlas robots that do the running man along with a litany of other familiar dance moves you might expect from a backg
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What Scientists Know About How the Coronavirus Variant Spreads
Contagiousness is the hallmark of the mutated virus surfacing in the U.S. and more than a dozen other countries.
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Lonely Pair of Mystifying Space Objects Found Traversing the Void
The heavenly orbs are not quite stars and not quite planets.
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Traditional Ghanaian medicines show promise against tropical diseases
The discovery of new drugs is vital to achieving the eradication of neglected tropical diseases (NTDs) in Africa and around the world. Now, researchers have identified traditional Ghanaian medicines which work in the lab against schistosomiasis, onchocerciasis and lymphatic filariasis, three diseases endemic to Ghana.
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Desalination breakthrough could lead to cheaper water filtration
Producing clean water at a lower cost could be on the horizon after researchers solved a complex problem that has baffled scientists for decades, until now.
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Stretching diamond for next-generation microelectronics
Diamond is the hardest material in nature. It also has great potential as an excellent electronic material. A research team has demonstrated for the first time the large, uniform tensile elastic straining of microfabricated diamond arrays through the nanomechanical approach. Their findings have shown the potential of strained diamonds as prime candidates for advanced functional devices in microele
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Asian tiger mosquito poses low risk for Zika virus outbreaks
The Asian tiger mosquito does not pose a major risk for Zika virus epidemics, according to a new study.
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Protein twist and squeeze confers cancer drug resistance
Scientists have revealed how a transporter protein twists and squeezes compounds out of cells, including chemotherapy drugs from some cancer cells.
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The Pandemic Metric to Trust Right Now
Editor's Note: The Atlantic is making vital coverage of the coronavirus available to all readers. Find the collection here . On weekends, some of the people in labs, health departments, hospitals, and medical examiner's offices who do the work of translating individual illnesses and deaths into data points get to go home. On Sundays and Mondays, when weekend COVID-19 data are reported, we see dro
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Stretching diamond for next-generation microelectronics
Diamond is the hardest material in nature. It also has great potential as an excellent electronic material. A research team has demonstrated for the first time the large, uniform tensile elastic straining of microfabricated diamond arrays through the nanomechanical approach. Their findings have shown the potential of strained diamonds as prime candidates for advanced functional devices in microele
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Multiple mosquito blood meals accelerate malaria transmission
Multiple bouts of blood feeding by mosquitoes shorten the incubation period for malaria parasites and increase malaria transmission potential, according to a new study.
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New virtual screening strategy identifies existing drug that inhibits COVID-19 virus
A novel computational drug screening strategy combined with lab experiments suggest that pralatrexate, a chemotherapy medication originally developed to treat lymphoma, could potentially be repurposed to treat COVID-19.
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The Atlantic Daily: Our New Year's Eve Playlist
Every weekday evening, our editors guide you through the biggest stories of the day, help you discover new ideas, and surprise you with moments of delight. Subscribe to get this delivered to your inbox . Crowds are a no-no this New Year's Eve, but there are no restrictions on dancing by yourself. To help you say good riddance to 2020 in style, I asked three writers who cover music—Spencer Kornhab
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Countries led by women haven't fared significantly better in the COVID-19 pandemic
Countries led by women have not fared significantly better in the COVID-19 pandemic than those led by men- it may be just our Western media bias that makes us think they have!
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Researchers measure, model desalination membranes to maximize flow, clean more water
A team of researchers — including engineers from Iowa State University — have used transmission electron microscopy and 3D computational modeling to quantify and visualize why some desalination membranes work better than others.
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Stretching diamond for next-generation microelectronics
Diamond is the hardest material in nature. But out of many expectations, it also has great potential as an excellent electronic material. A joint research team led by City University of Hong Kong (CityU) has demonstrated for the first time the large, uniform tensile elastic straining of microfabricated diamond arrays through the nanomechanical approach. Their findings have shown the potential of s
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Desalination breakthrough could lead to cheaper water filtration
Producing clean water at a lower cost could be on the horizon after researchers from The University of Texas at Austin and Penn State solved a complex problem that has baffled scientists for decades, until now.
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Microfabricated elastic diamonds improve material's electronic properties
Overcoming a key obstacle in achieving diamond-based electronic and optoelectronic devices, researchers have presented a new way to fabricate micrometer-sized diamonds that can elastically stretch.
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COVID-19's impact on cancer prevention and control in Africa
When the COVID-19 pandemic reached Africa, the continent was already struggling to deal with another public health crisis – a growing cancer epidemic characterized by more than one million new cancer cases and nearly 700,000 deaths per year.
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Model predicts global threat of sinking land will affect 635 million people worldwide
A new analysis suggests that, by 2040, 19% of the world's population – accounting for 21% of the global Gross Domestic Product – will be impacted by subsidence, the sinking of the ground's surface, a phenomenon often caused by human activities such as groundwater removal, and by natural causes as well.
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New proposal for how aerosols drive increased atmospheric convection in thunderstorm clouds
High in the clouds, atmospheric aerosols, including anthropogenic air pollutants, increase updraft speeds in storm clouds by making the surrounding air more humid, a new study finds.
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Spontaneous robot dances highlight a new kind of order in active matter
Researchers have proposed a new principle by which active matter systems can spontaneously order, without need for higher level instructions or even programmed interaction among the agents. And they have demonstrated this principle in a variety of systems, including groups of periodically shape-changing robots called "smarticles."
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Controlling the nanoscale structure of membranes is key for clean water, researchers find
A desalination membrane acts as a filter for salty water: push the water through the membrane, get clean water suitable for agriculture, energy production and even drinking. The process seems simple enough, but it contains complex intricacies that have baffled scientists for decades — until now. Researchers from Penn State, The University of Texas at Austin, Iowa State University, Dow Chemical Co
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New mutations in malaria parasite encourage resistance against key preventive drug
In the ongoing arms race between humans and the parasite that causes malaria, Taane Clark and colleagues at the London School of Hygiene and Tropical Medicine (LSHTM) report that new mutations that enhance resistance to a drug used to prevent malaria in pregnant women and children are already common in countries fighting the disease. The new results are published Dec. 31 in PLOS Genetics.
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Traditional Ghanaian medicines show promise against tropical diseases
The discovery of new drugs is vital to achieving the eradication of neglected tropical diseases (NTDs) in Africa and around the world. Now, researchers reporting in PLOS Neglected Tropical Diseases have identified traditional Ghanaian medicines which work in the lab against schistosomiasis, onchocerciasis and lymphatic filariasis, three diseases endemic to Ghana.
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Multiple mosquito blood meals accelerate malaria transmission
Multiple bouts of blood feeding by mosquitoes shorten the incubation period for malaria parasites and increase malaria transmission potential, according to a study published Dec. 31 in the open-access journal PLOS Pathogens by Lauren Childs of Virginia Tech, Flaminia Catteruccia of the Harvard T.H. Chan School of Public Health, and colleagues.
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New virtual screening strategy identifies existing drug that inhibits Covid-19 virus
A novel computational drug screening strategy combined with lab experiments suggest that pralatrexate, a chemotherapy medication originally developed to treat lymphoma, could potentially be repurposed to treat Covid-19. Haiping Zhang of the Shenzhen Institutes of Advanced Technology in Shenzhen, China, and colleagues present these findings in the open-access journal PLOS Computational Biology .
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Asian tiger mosquito poses low risk for Zika virus outbreaks
The Asian tiger mosquito does not pose a major risk for Zika virus epidemics, according to a study published December 31 in the open-access journal PLOS Pathogens by Albin Fontaine of the Institut de Recherche Biomédicale des Armées, and colleagues.
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UK's chief medical officers warn over vaccine availability
Health chiefs stress need to maximise number of people receiving jabs as Covid cases rise
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Land subsidence 'will affect almost fifth of global population'
Unesco warns of urban centres sinking because of unsustainable farming and groundwater extraction Subsidence, or the gradual sinking of land, could affect 19% of the world's population by 2040, according to new research funded by Unesco. If no action is taken, human activity, combined with drought and rising sea levels exacerbated by global heating, could put many of the world's coastal cities at
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The science stories likely to make headlines in 2021
Science's news editors and writers predict this year's biggest developments
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Anticoagulants take over
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Discrimination and anxiety: Using multiple polygenic scores to control for genetic liability [Psychological and Cognitive Sciences]
An established body of research indicates that discrimination is associated with increased symptoms of anxiety and negative affect. However, the association cannot be interpreted unambiguously as an exposure effect because a common set of genetic factors can simultaneously contribute to increased liability for symptoms of anxiety, negative affect, and the…
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A field theory for plant tropisms [Applied Mathematics]
Plants integrate numerous signals in order to adapt their shape to their environment, modifying their tissues structurally and biochemically so that stems, roots, branches, and leaves have the appropriate shape, orientation, and mechanical properties to track the sun, resist gravity, and harness nutrients. In PNAS, Moulton et al. (1) present…
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Navigating the waters of membrane design [Chemistry]
The United States benefits from access to comparatively cheap and plentiful water, but population growth, urbanization, and environmental challenges threaten water security, putting our future at risk (1, 2). This problem is intensified in disparate parts of the world that do not have access to the resources available to the…
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Controlling the nanoscale structure of membranes is key for clean water, researchers find
A desalination membrane acts as a filter for salty water: push the water through the membrane, get clean water suitable for agriculture, energy production and even drinking. The process seems simple enough, but it contains complex intricacies that have baffled scientists for decades—until now.
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Stretching diamond for next-generation microelectronics
Diamond is the hardest material in nature. But out of many expectations, it also has great potential as an excellent electronic material. A joint research team led by City University of Hong Kong (CityU) has demonstrated for the first time the large, uniform tensile elastic straining of microfabricated diamond arrays through the nanomechanical approach. Their findings have shown the potential of s
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News at a glance
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Open access takes flight
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Anticoagulants take over
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Editing blood disorders
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Interfering with diabetes
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Here comes the cavalry!
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A closer look at loss
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A rechargeable zinc-air battery based on zinc peroxide chemistry
Rechargeable alkaline zinc-air batteries promise high energy density and safety but suffer from the sluggish 4 electron (e – )/oxygen (O 2 ) chemistry that requires participation of water and from the electrochemical irreversibility originating from parasitic reactions caused by caustic electrolytes and atmospheric carbon dioxide. Here, we report a zinc-O 2 /zinc peroxide (ZnO 2 ) chemistry that
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Airway stem cells sense hypoxia and differentiate into protective solitary neuroendocrine cells
Neuroendocrine (NE) cells are epithelial cells that possess many of the characteristics of neurons, including the presence of secretory vesicles and the ability to sense environmental stimuli. The normal physiologic functions of solitary airway NE cells remain a mystery. We show that mouse and human airway basal stem cells sense hypoxia. Hypoxia triggers the direct differentiation of these stem c
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Interactions between nascent proteins translated by adjacent ribosomes drive homomer assembly
Accurate assembly of newly synthesized proteins into functional oligomers is crucial for cell activity. In this study, we investigated whether direct interaction of two nascent proteins, emerging from nearby ribosomes (co-co assembly), constitutes a general mechanism for oligomer formation. We used proteome-wide screening to detect nascent chain–connected ribosome pairs and identified hundreds of
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A tripartite mechanism catalyzes Mad2-Cdc20 assembly at unattached kinetochores
During cell division, kinetochores couple chromosomes to spindle microtubules. To protect against chromosome gain or loss, kinetochores lacking microtubule attachment locally catalyze association of the checkpoint proteins Cdc20 and Mad2, which is the key event in the formation of a diffusible checkpoint complex that prevents mitotic exit. We elucidated the mechanism of kinetochore-catalyzed Mad2
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