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Sunday, February 28, 2021

February 28, 2021

Imaging space debris in high resolution

Researchers have introduced a new method for taking high-resolution images of fast-moving and rotating objects in space, such as satellites or debris in low Earth orbit. They created an imaging process that first utilizes a novel algorithm to estimate the speed and angle at which an object in space is rotating, then applies those estimates to develop a high-resolution picture of the target.

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February 28, 2021

When using pyrite to understand Earth's ocean and atmosphere: Think local, not global

Scientists have long used information from sediments at the bottom of the ocean to reconstruct the conditions in oceans of the past. But a study raises concerns about the common use of pyrite sulfur isotopes to reconstruct Earth's evolving oxidation state. These signals aren't the global fingerprint of oxygen in the atmosphere, according to new research from Washington University in St. Louis.

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February 28, 2021

Sensing robot healthcare helpers

Robots that could take on basic healthcare tasks to support the work of doctors and nurses may be the way of the future. Who knows, maybe a medical robot can prescribe your medicine someday? That's the idea behind 3D structural-sensing robots being developed and tested right now.

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February 28, 2021

'Explicit instruction' provides dramatic benefits in learning to read

When it comes to learning to read, new research suggests that explicit instruction -- a phonics teaching method in which the relationship between sound and spelling is taught directly and systematically -- is more effective than self-discovery through reading.

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February 28, 2021

Meteorites remember conditions of stellar explosions

A team of international researchers went back to the formation of the solar system 4.6 billion years ago to gain new insights into the cosmic origin of the heaviest elements on the periodic table.

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February 28, 2021

Ancient Egyptian manual reveals new details about mummification

Based on a manual recently discovered in a 3,500-year-old medical papyrus, an Egyptologist has been able to reconstruct the embalming process used to prepare ancient Egyptians for the afterlife. It is the oldest surviving manual on mummification yet discovered.

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February 28, 2021

Signal transduction without signal: Receptor clusters can direct cell movement

Whether we smell, taste or see, or when adrenaline rushes through our veins, all of these signals are received by our cells via a specific group of receptor proteins called G protein-coupled receptors, which transmit signals to the inside of the cell. Biochemists have now discovered that such receptors can also produce signals even in the absence of an external stimulus: For certain receptors clustering is apparently sufficient.

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Saturday, February 27, 2021

February 27, 2021

Maternal instincts lead to social life of bees

The maternal care of offspring is one of the behavioral drivers that has led some bee species to have an ever-expanding social life over the history of evolution, new research has found. By virtue of being in a social group the genome itself may respond by selecting more social, rather than non-social genes. The behavior and social environment come first setting the stage for future molecular evolution.

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February 27, 2021

Largest cluster of galaxies known in the early universe

A study has found the most densely populated galaxy cluster in formation in the primitive universe. The researchers predict that this structure, which is at a distance of 12.5 billion light years from us, will have evolved into a cluster similar to that of Virgo, a neighbor of the Local Group of galaxies to which the Milky Way belongs.

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February 27, 2021

Targeted spraying to prevent malaria in low-transmission setting halves cost of current practice

Furthermore, the targeted Indoor Residual Spraying (IRS) intervention was safe, less costly, and more cost-effective compared with standard 'blanket' IRS, meaning savings could potentially be reallocated to other malaria control and elimination activities.

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February 27, 2021

Dinosaur species: 'Everyone's unique'

'Everyone's unique' is a popular maxim. All people are equal, but there are of course individual differences. This was no different with dinosaurs. A study has now revealed that the variability of Plateosaurus trossingensis was much greater than previously assumed. The paleontologists examined a total of 14 complete skulls of this species, eight of which they described for the first time.

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February 27, 2021

How photoblueing disturbs microscopy

An undesirable effect can occur in super-resolution fluorescence microscopy: photoblueing. A new article shows how it can be prevented or made useful for research.

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February 27, 2021

Can a robot operate effectively underwater?

Researchers find sea stars' shape plays an important role in their ability to withstand dynamic water forces and remain attached to surfaces. Understanding such shape shifting could help design underwater robots that can similarly adapt to extreme hydrodynamic environments.

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February 27, 2021

Social media use driven by search for reward, akin to animals seeking food

Our use of social media, specifically our efforts to maximize 'likes,' follows a pattern of 'reward learning,' concludes a new study by an international team of scientists. Its findings reveal parallels with the behavior of animals, such as rats, in seeking food rewards.

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February 27, 2021

Retroviruses are re-writing the koala genome and causing cancer

Koalas are facing multiple environmental and health issues which threaten their survival. Along with habitat loss - accelerated by last year's devastating bush fires - domestic dog attacks and road accidents, they suffer from deadly chlamydial infections and extremely high frequency of cancer. Scientists now demonstrate that a retrovirus invading the koala germline explains the high frequency of koala cancer.

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Friday, February 26, 2021

February 26, 2021

African leopard: A cat of all trades

The leopard stands out as an elusive, versatile, and adaptable animal. Researchers have just published the first genomic data for the African subspecies of the leopard. The results showed an exceptionally high genetic diversity compared to other top predators, transforming our understanding of population dynamics in species at the top of the food chain.

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February 26, 2021

Measuring the tRNA world

Transfer RNAs (tRNAs) deliver specific amino acids to ribosomes during translation of messenger RNA into proteins. The abundance of tRNAs can therefore have a profound impact on cell physiology, but measuring the amount of each tRNA in cells has been limited by technical challenges. Researchers have now overcome these limitations with mim-tRNAseq, a method that can be used to quantify tRNAs in any organism and will help improve our understanding of tRNA regulation in health and disease.

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February 26, 2021

Quantum quirk yields giant magnetic effect, where none should exist

In a twist befitting the strange nature of quantum mechanics, physicists have discovered the Hall effect -- a characteristic change in the way electricity is conducted in the presence of a magnetic field -- in a nonmagnetic quantum material to which no magnetic field was applied.

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February 26, 2021

Exposure to diverse career paths can help fill labor market 'skills gap'

When Patrick Rottinghaus began college, he had no idea what he wanted to do with his career. He started out as an "Open" major while he explored possibilities. Today, he is helping young people eager to find their place in the world by identifying their strengths and connecting them with careers that match their skill-set, interests and personality. As the father of three children, including a daughter soon to enter high school, he wants to ensure they are equipped with the knowledge and skills to succeed as they prepare to enter the modern workforce.

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February 26, 2021

Engineering the boundary between 2D and 3D materials

For practical applications, two-dimensional materials such as graphene must at some point connect with the ordinary world of 3D materials. Researchers have come up with a way of imaging what goes on at these interfaces, down to the level of individual atoms, with the goal of better controlling these materials' electronic properties.

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February 26, 2021

Considering disorder and cooperative effects in photon escape rates from atomic gases

Scientists aim to numerically investigative the roles of cooperative effects and disorder in photon escape rates from a cold atomic gas to construct a model that considers the vectorial nature of light. Thus, the study accounts for properties of light, previously neglected.

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February 26, 2021

Light-emitting tattoo engineered

The technology, which uses organic light-emitting diodes (OLEDs), is applied in the same way as water transfer tattoos. That is, the OLEDs are fabricated on to temporary tattoo paper and transferred to a new surface by being pressed on to it and dabbed with water.

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February 26, 2021

Genes identified that increase the risk of obesity but also protect against disease

Scientists have identified 62 genes that lead to both higher levels of body fat but a lower risk of cardiovascular and metabolic diseases. These genes may help to keep body fat healthy, and open a new avenue for developing drugs that lower the risk of diabetes and heart disease.

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February 26, 2021

A weak heart makes a suffering brain

Heart problems cause disturbed gene activity in the brain's memory center, from which cognitive deficits arise. Researchers at the DZNE come to this conclusion based on laboratory studies. They consider that they have found a possible cause for the increased risk of dementia in people with heart problems.

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February 26, 2021

Under climate stress, human innovation set stage for population surge

Aridification in the central plains of China during the early Bronze Age did not cause population collapse, a result that highlights the importance of social resilience to climate change. Instead of a collapse amid dry conditions, development of agriculture and increasingly complex human social structures set the stage for a dramatic increase in human population around 3,900 to 3,500 years ago.

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February 26, 2021

Study finds short window for donating convalescent plasma to COVID-19 patients

The optimal timeframe for donating convalescent plasma for use in COVID-19 immunotherapy, which was given emergency use authorization by the Food and Drug Administration in August 2020, is within 60 days of the onset of symptoms, according to a new study. The research also reveals that the ideal convalescent plasma donor is a recovered COVID-19 patient who is older than 30 and whose illness had been severe.

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February 26, 2021

Mortality rises among public when health workers get sick in an outbreak, model suggests

When healthcare workers become ill during a disease outbreak, overall case counts and mortality rates may significantly increase, according to a new model. The findings may help to improve interventions that aim to mitigate the effects of outbreaks such as COVID-19.

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February 26, 2021

What to do when a mammogram shows swollen lymph nodes in women just vaccinated for COVID

When women undergo breast imaging shortly after receiving a COVID-19 vaccine in the arm, their tests may show swollen lymph nodes in the armpit area. Radiologists say that this is usually a normal finding, and if there are no other concerns, no additional imaging tests are needed unless the lymph nodes remain swollen for more than six weeks after vaccination. The team has published an approach to help avoid delays in both vaccinations and breast cancer screening.

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February 26, 2021

Did teenage 'tyrants' outcompete other dinosaurs?

Paleo-ecologists have demonstrated that the offspring of enormous carnivorous dinosaurs, such as Tyrannosaurus rex may have fundamentally re-shaped their communities by out-competing smaller rival species.

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Thursday, February 25, 2021

February 25, 2021

Ancient skeletal hand could reveal evolutionary secrets

Evolutionary expert Charles Darwin and others recognized a close evolutionary relationship between humans, chimps and gorillas based on their shared anatomies, raising some big questions: how are humans related to other primates, and exactly how did early humans move around?

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February 25, 2021

Human-caused North Atlantic right whale deaths are being undercounted

Scientists have found that known deaths of critically endangered North Atlantic right whales represent a fraction of the true death toll. This comes as the death of a calf and recent sightings of entangled right whales off the southeastern United States raise alarm.

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February 25, 2021

Pushing computing to the edge by rethinking microchips' design

Responding to artificial intelligence's exploding demands on computer networks, researchers in recent years have radically increased the speed and slashed the energy use of specialized AI systems. Now, the researchers have moved their innovation closer to widespread use by creating co-designed hardware and software that will allow designers to blend these new types of systems into their applications.

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February 25, 2021

Record-high Arctic freshwater will flow to Labrador Sea, affecting local and global oceans

The Arctic Ocean's Beaufort Sea has increased its freshwater content by 40% over the past two decades. When conditions change this freshwater will travel to the Labrador Sea off Canada, rather than through the wider marine passageways that connect to seas in Northern Europe. This has implications for local marine environments and global ocean circulation.

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February 25, 2021

Sulfur metabolism may have paved the way for evolution of multicellularity

When the slime mold Dictyostelium discoideum runs out of food, sulfur limitation drives its development from a unicellular to a multicellular organism. Researchers now present the nutrient signaling pathways in this early eukaryote in great detail. Their results show how metabolism may have played a crucial role in the origins of multicellularity. Moreover, the findings also have therapeutic implications for more complex organisms such as humans. Targeting sulfur metabolism in cancer cells may enhance anti-tumor immunity.

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February 25, 2021

Scientists capture the choreography of a developing brain

The formation of a brain is one of nature's most staggeringly complex accomplishments. The intricate intermingling of neurons and a labyrinth of connections also make it a particularly difficult feat for scientists to study. Now researchers have devised a strategy that allows them to see this previously impenetrable process unfold in a living animal -- the worm Caenorhabditis elegans.

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February 25, 2021

Mechanism by which exercise strengthens bones and immunity

Scientists have identified the specialized environment, known as a niche, in the bone marrow where new bone and immune cells are produced. The study also shows that movement-induced stimulation is required for the maintenance of this niche, as well as the bone and immune-forming cells that it contains. Together, these findings identify a new way that exercise strengthens bones and immune function.

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February 25, 2021

Asteroid dust found in crater closes case of dinosaur extinction

Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that slammed into Earth 66 million years ago by finding a key piece of evidence: asteroid dust inside the impact crater.

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February 25, 2021

Twin atoms: A source for entangled particles

One of the most important phenomena in quantum physics is entanglement - used for quantum krypography, quantum computers and many other applications. While it is easy to create pairs of entangled photons, it is much harder to create entangled atoms in a well-defined way. This has now been made possible using an experimental setup.

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February 25, 2021

Researchers use machine learning to identify autism blood biomarkers

Using machine learning tools to analyze hundreds of proteins, researchers have identified a group of biomarkers in blood that could lead to an earlier diagnosis of children with autism spectrum disorder (ASD) and, in turn, more effective therapies sooner.

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February 25, 2021

After spread, travel bans are of limited value in thwarting the spread of COVID-19, researchers find

New research aimed at providing a decision support system to Italian policy makers suggests that reducing individual activity (i.e., social distancing, closure of non-essential business, etc.) is far superior in controlling the dissemination of SARS-CoV-2, the virus that causes COVID-19.

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February 25, 2021

How SARS-CoV-2's sugar-coated shield helps activate the virus

SARS-CoV-2, the virus that causes COVID-19, is coated with sugars called glycans, which help it evade the immune system. New research shows precisely how those sugars help the virus become activated and infectious and could help with vaccine and drug discovery.

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February 25, 2021

Why some coronavirus strains are more infectious than others

The coronaviruses that cause SARS and COVID-19 have spike proteins that move into 'active' and 'inactive' positions. New research indicates how those molecular movements may make the COVID-19 virus more infectious compared to the SARS virus.

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February 25, 2021

Southern California COVID-19 strain rapidly expands global reach

A new strain of the coronavirus in Southern California is rapidly spreading across the country and around the world as travelers apparently carry the virus with them to a growing list of global destinations, according to new research. The strain now accounts for nearly half of current COVID-19 cases in Southern California.

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February 25, 2021

How to neutralize the SARS-CoV-2 virus

In the absence of effective treatments for COVID-19, many countries have approved the therapeutic use of blood plasma from recovering patients because it contains antibodies against the coronavirus. But not every type of antibody can neutralize the virus and render it noninfectious. New research explores variation in virus neutralization capabilities, which can vary widely by type of antibody.

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February 25, 2021

Atheists and believers both have moral compasses, but with key differences

A new study suggests that, while atheists and theists share moral values related to protecting vulnerable individuals, atheists are less likely to endorse values that promote group cohesion and more inclined to judge the morality of actions based on their consequences.

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Wednesday, February 24, 2021

February 24, 2021

A space-time crystal

A research team has succeeded in creating a micrometer-sized space-time crystal consisting of magnons at room temperature. With the help of a scanning transmission X-ray microscope, they were able to film the recurring periodic magnetization structure in a crystal.

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February 24, 2021

People with SARS-CoV-2 antibodies may have low risk of future infection, study finds

People who have had evidence of a prior infection with SARS-CoV-2, the virus that causes COVID-19, appear to be well protected against being reinfected with the virus, at least for a few months, according to a new study. This finding may explain why reinfection appears to be relatively rare, and it could have important public health implications.

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February 24, 2021

Evidence that Earth's first cells could have made specialized compartments

New research provides evidence that the "protocells" that formed around 3.8 billion years ago, before bacteria and single-celled organisms, could have had specialized bubble-like compartments that formed spontaneously, encapsulated small molecules, and formed "daughter" protocells.

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February 24, 2021

Reclusive neutron star may have been found in famous supernova

Since astronomers captured the bright explosion of a star on February 24, 1987, researchers have been searching for the squashed stellar core that should have been left behind. A group of astronomers using data from NASA space missions and ground-based telescopes may have finally found it.

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February 24, 2021

Agile underwater glider could quietly survey the seas

Autonomous underwater vehicles have become versatile tools for exploring the seas. But they can be disruptive to the environment or have trouble traveling through confined spaces. Researchers are studying an alternative: highly maneuverable, low-cost underwater gliders that operate silently.

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February 24, 2021

Researchers challenge the Conservation Reserve Program status quo to mitigate fossil fuels

Amid population expansion and severe climate conditions threatening agricultural productivity, sustainable food production is a national priority. Simultaneously, advances in bioenergy agriculture are necessary to move our energy sector away from fossil fuels.

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February 24, 2021

Spintronics: New production method makes crystalline microstructures universally usable

New storage and information technology requires new higher performance materials. One of these materials is yttrium iron garnet, which has special magnetic properties. Thanks to a new process, it can now be transferred to any material. Developed by physicists, the method could advance the production of smaller, faster and more energy-efficient components for data storage and information processing.

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February 24, 2021

Low-level jets create winds of change for turbines

Global wind power capacity has increased more than fivefold over the past decade, leading to larger turbines, but low-level jets are one cause for concern. The effects of these strong, energetic wind flows depend on how high the wind flows are in relation to the turbines. Researchers considered three different scenarios in which the LLJs were above, below, and in the middle of the turbine rotors.

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February 24, 2021

Measuring hemoglobin levels with AI microscope, microfluidic chips

A complete blood count can help ascertain the health of a patient and typically includes an estimate of the hemoglobin concentration, which can indicate several conditions, including anemia, polycythemia, and pulmonary fibrosis. Researchers describe a AI-powered imaging-based tool to estimate hemoglobin levels. The setup was developed in conjunction with a microfluidic chip and an AI-powered automated microscope that was designed for deriving the total as well as differential counts of blood cells.

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Saturday, February 20, 2021

February 20, 2021

Direct cloning method CAPTUREs novel microbial natural products

Microorganisms possess natural product biosynthetic gene clusters (BGCs) that may harbor unique bioactivities for use in drug development and agricultural applications. However, many uncharacterized microbial BGCs remain inaccessible. Researchers previously demonstrated a technique using transcription factor decoys to activate large, silent BGCs in bacteria to aid in natural product discovery.

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Friday, February 19, 2021

February 19, 2021

The hidden dance of roots revealed

New time-lapse videos capture something that's too slow for our eyes to see: the growing tips of plant roots make corkscrew-like motions, waggling and winding in a helical path as they burrow into the soil. By using time-lapse footage, along with a root-like robot to test ideas, researchers have gained new insights into how and why rice root tips twirl as they grow.

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February 19, 2021

Wolves prefer to feed on the wild side

When there is a choice, wolves in Mongolia prefer to feed on wild animals rather than grazing livestock. Previous studies had shown that the diet of wolves in inland Central Asia consists mainly of grazing livestock, which could lead to increasing conflict between nomadic livestock herders and wild predatory animals like wolves.

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February 19, 2021

Preschoolers with higher cardiorespiratory fitness do better on cognitive tests

Researchers report that 4-6-year-old children who walk further than their peers during a timed test - a method used to estimate cardiorespiratory health - also do better on cognitive tests and other measures of brain function. The study suggests that the link between cardiorespiratory fitness and cognitive health is evident even earlier in life than previously appreciated.

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February 19, 2021

Selective concentration of cationic species

Sample pretreatment processes such as concentration or classification are essential to finding trace substances present in a fluid. In scientific communities recently, prolific research is being conducted on sample pretreatment techniques utilizing electrokinetics.

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February 19, 2021

Quantum computing: When ignorance is wanted

Quantum technologies for computers open up new concepts of preserving the privacy of input and output data of a computation. Scientists have shown that optical quantum systems are not only particularly suitable for some quantum computations, but can also effectively encrypt the associated input and output data.

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February 19, 2021

Blueprint for fault-tolerant qubits

Building a quantum computer is a challenging task because of the fragility of quantum bits. To deal with this problem, various types of active error correction techniques have been developed. In contrast, researchers have now proposed a design for an inherently fault protected circuit with passive error correction that could significantly accelerate the construction of a quantum computer with a large number of qubits.

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February 19, 2021

Cell-free DNA in urine as potential method for cancer detection

What if a simple urine sample could detect cancer in its very earliest stages when the disease responds more favorably to treatment and improved outcomes are more likely? That was the question posed by scientists who have found a way of zeroing in on early-stage cancer by analyzing short strands of cell-free DNA in urine.

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February 19, 2021

UK hospital admissions for food-induced anaphylaxis triple over 20 year period but death rate falls

The rate of people who are admitted to hospital in the UK due to a serious allergic reaction (anaphylaxis) caused by food has more than tripled over a 20-year period. Despite this, the death rate from food-induced anaphylaxis halved over the same period, according to new research.

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Thursday, February 18, 2021

February 18, 2021

New study examines leeches for role in major disease of sea turtles in Florida

Researchers are homing in on the cause of a major disease of sea turtles, with some of their latest findings implicating saltwater leeches as a possible factor. The results present the first evidence of a significant association between leeches and the disease in sea turtles, according to the researchers.

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February 18, 2021

The distribution of vertebrate animals redefines temperate and cold climate regions

The distribution of vegetation is routinely used to classify climate regions worldwide, yet whether these regions are relevant to other organisms is unknown. Researchers have established climate regions based on vertebrate species' distributions in a new study. They found that while high-energy climate regions are similar across vertebrate and plant groups, there are large differences in temperate and cold climates.

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February 18, 2021

Cone snail venom shows potential for treating severe malaria

Using venom from a cone snail, a new study suggests these conotoxins may potentially treat malaria. The study provides important leads toward the development of new and cost-effective anti-adhesion or blockade-therapy drugs aimed at counteracting the pathology of severe malaria. Similarly, mitigation of emerging diseases like COVID-19 also could benefit from conotoxins as potential inhibitors of protein-protein interactions as treatment. Venom peptides from cone snails has the potential to treat myriad diseases using blockage therapies.

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February 18, 2021

Impact of COVID-19 in Africa 'vastly underestimated', warn researchers

The impact of COVID-19 in Africa has been vastly underestimated, warn researchers in a new study that showed that COVID-19 deaths accounted for 15 to 20 percent of all sampled deaths -- many more than official reports suggest and contradicting the widely held view that COVID-19 has largely skipped Africa and had little impact.

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February 18, 2021

Damage to the heart found in more than half of COVID-19 patients discharged from hospital

Around 50 percent of patients who have been hospitalized with severe COVID-19 and who show raised levels of a protein called troponin have damage to their hearts. The injury was detected by magnetic resonance imaging (MRI) scans at least a month after discharge, according to new findings.

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February 18, 2021

The original antigenic sin: How childhood infections could shape pandemics

A child's first influenza infection shapes their immunity to future airborne flu viruses - including emerging pandemic strains. But not all flu strains spur the same initial immune defense, according to new findings published today. The results are relevant to the COVID-19 pandemic, according to the senior author, who says they may explain age-based distributions of SARS-CoV-2 disease severity and susceptibility.

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February 18, 2021

Gut microbiome implicated in healthy aging and longevity

The gut microbiome is an integral component of the body, but its importance in the human aging process is unclear. Researchers have identified distinct signatures in the gut microbiome that are associated with either healthy or unhealthy aging trajectories, which in turn predict survival in a population of older individuals.

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February 18, 2021

Pandemic got you down? A little nature could help

Researchers have long been aware of the positive impact of a connection with nature on psychological health and, according to a new study, the pandemic hasn't decreased the power of nature to improve mental well-being.

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February 18, 2021

Genetics may play role in determining immunity to COVID-19

Researchers report that individual immune response to SARS-CoV-2 may be limited by a set of variable genes that code for cell surface proteins essential for the adaptive immune system. The finding may help explain why COVID-19 immunity varies by individual.

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February 18, 2021

Long-term, heavy coffee consumption and CVD risk

In a world first genetic study, researchers found that that long-term, heavy coffee consumption - six or more cups a day - can increase the amount of lipids (fats) in your blood to significantly heighten your risk of cardiovascular disease (CVD).

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Wednesday, February 17, 2021

February 17, 2021

Never-before-seen antibody binding, informing liver cancer, antibody design

In structural biology, some molecules are so unusual they can only be captured with a unique set of tools. That's precisely how a team defined how antibodies can recognize a compound called phosphohistidine -- a highly unstable molecule that has been found to play a central role in some forms of cancer.

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February 17, 2021

3D microscopy clarifies understanding of body's immune response to obesity

Researchers who focus on fat know that some adipose tissue is more prone to inflammation-related comorbidities than others, but the reasons why are not well understood. Thanks to a new analytical technique, scientists are getting a clearer view of the microenvironments found within adipose tissue associated with obesity. This advance may illuminate why some adipose tissues are more prone to inflammation - leading to diseases like type 2 diabetes, cancer and cardiovascular disorders - and help direct future drug therapies to treat obesity.

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February 17, 2021

New possibilities to prevent sudden cardiac death

An assistant professor of biomedical sciences has developed a better understanding of the pathological characteristics behind arrhythmogenic cardiomyopathy, as well as promising avenues for prevention.

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February 17, 2021

Termite gut microbes could aid biofuel production

Wheat straw, the dried stalks left over from grain production, is a potential source of biofuels and commodity chemicals. But before straw can be converted to useful products by biorefineries, the polymers that make it up must be broken down into their building blocks. Now, researchers have found that microbes from the guts of certain termite species can help break down lignin, a particularly tough polymer in straw.

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February 17, 2021

Edible holograms could someday decorate foods

Holograms are everywhere, from driver's licenses to credit cards to product packaging. And now, edible holograms could someday enhance foods. Researchers have developed a laser-based method to print nanostructured holograms on dried corn syrup films. The edible holograms could also be used to ensure food safety, label a product or indicate sugar content, the researchers say.

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February 17, 2021

Toward a disease-sniffing device that rivals a dog's nose

A new system can detect the chemical and microbial content of an air sample with even greater sensitivity than a dog's nose. Researchers coupled this to a machine-learning process that can identify the distinctive characteristics of the disease-bearing samples.

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February 17, 2021

This robot doesn't need any electronics

Engineers have created a four-legged soft robot that doesn't need any electronics to work. The robot only needs a constant source of pressurized air for all its functions, including its controls and locomotion systems.

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February 17, 2021

How sessile seahorses managed to speciate and disperse across the world's oceans

Seahorses are extremely poor swimmers. Surprisingly, however, they can be found in all of the world´s oceans. On the basis of almost 360 different seahorse genomes, a group of researchers studied how these special fish were able to spread so successfully worldwide. Based on an evolutionary tree of 21 species it was possible to reconstruct the dispersal routes of seahorses worldwide and to explain where and when new species emerged.

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February 17, 2021

Do sweat it! Wearable microfluidic sensor to measure lactate concentration in real time

Lactate, a compound present in sweat, is an important biomarker to quantify during exercise. However, available wearable sensors can cause skin irritation, which calls for the use of different materials. In a recent study, scientists have developed a soft and nonirritating microfluidic sensor for the real-time measurement of lactate concentration in sweat. This wearable device will help monitor the state of the body during intense physical exercise or work.

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February 17, 2021

Fish diet heats up marine biodiversity hotspot

A never-before-seen biodiversity pattern of coral reef fishes suggests some fishes might be exceptionally vulnerable to environmental change. It highlights, for the first time, a unique link between the diet and distribution of species across the marine realm.

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February 17, 2021

Wolves, dogs and dingoes, oh my

Dogs are generally considered the first domesticated animal, while its ancestor is generally considered to be the wolf, but where the Australian dingo fits into this framework is still debated, according to a retired anthropologist.

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February 17, 2021

Insects silencing the alarm

Like a scene from a horror movie, tomato fruitworm caterpillars silence their food plants' cries for help as they devour their leaves. That is the finding of a multidisciplinary team of researchers, who said the results may yield insights into the abilities of crop plants -- such as tomato and soybean -- to withstand additional stressors, like climate change.

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February 17, 2021

You snooze, you lose - with some sleep trackers

Wearable sleep tracking devices - from Fitbit to Apple Watch to never-heard-of brands stashed away in the electronics clearance bin - have infiltrated the market at a rapid pace in recent years. And like any consumer products, not all sleep trackers are created equal, according to neuroscientists.

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February 17, 2021

Variation in intensity of fracture-associated prescription drug use

A new study reveals that there is substantial variation across different regions of the country in the intensity of fracture-associated drug use among long-term care residents, and that areas with greater use of these prescription drugs experience higher fracture rates.

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February 17, 2021

Battery: Getting the lead in

Researchers developed a low-cost, high-performance, sustainable lead-based anode for lithium-ion batteries that can power hybrid and all-electric vehicles. They also uncovered its previously unknown reaction mechanism during charge and discharge.

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February 17, 2021

Partners' company helps us stay connected during pandemic

A pair of studies reveal that living with a romantic partner helps people feel more socially connected during COVID-19. But no other pandemic-era social dynamic carries notable benefits, the researchers found.

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February 17, 2021

Antibody-based COVID-19 treatments work best in concert with immune cells

Antibody-based drugs have been authorized for emergency use in COVID-19 patients by the Food and Drug Administration. Researchers have discovered that the ability to interact with other elements of the immune system is an indispensable part of the effectiveness of such antibodies. The findings could help improve the design of the next generation of antibody-based COVID-19 drugs.

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Tuesday, February 16, 2021

February 16, 2021

Genetic study of Lewy body dementia supports ties to Alzheimer's and Parkinson's diseases

Scientists found that five genes may play a critical role in determining whether a person will suffer from Lewy body dementia, a devastating disorder that riddles the brain with clumps of abnormal protein deposits called Lewy bodies. The results also supported the disorder's ties to Parkinson's and Alzheimer diseases.

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February 16, 2021

Early step toward leukemia drug therapy

The team has discovered that for acute myeloid leukemia (AML) patients, there is a dopamine receptor pathway that becomes abnormally activated in the cancer stem cells. This inspired the clinical investigation of a dopamine receptor-inhibiting drug thioridazine as a new therapy for patients, and their focus on adult AML has revealed encouraging results.

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February 16, 2021

Novel flexible terahertz camera can inspect objects with diverse shapes

Scientists have developed a flexible, free-standing, and versatile terahertz (THz) camera patch. This novel camera overcomes the limitations of the conventional THz cameras that are bulky and rigid. With its high sensitivity, adaptability, and ease of filming irregularly shaped objects, it is a potential tool for effective quality control of complex devices.

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February 16, 2021

Perceiving predators: Understanding how plants 'sense' herbivore attack

Plants are known to possess solid immune response mechanisms. One such response is 'sensing' attack by herbivorous animals. Researchers discuss 'elicitors' -- the molecules that initiate plant defense mechanisms against herbivore attack. He highlights the major types of elicitors and the underlying cellular signaling, and states that this could spur research on organic farming practices that could prevent the use of harmful pesticides.

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February 16, 2021

A boost for plant research

Optogenetics can be used to activate and study cells in a targeted manner using light. Scientists have now succeeded in transferring this technique to plants.

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February 16, 2021

Asthma may heighten flu risk and cause dangerous mutations

A subtype of asthma in adults may cause higher susceptibility to influenza and could result in dangerous flu mutations. Animal studies have found that paucigranulocytic asthma (PGA) - a non-allergic form of the condition - allows the flu virus to flourish in greater numbers in sufferers.

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February 16, 2021

Health survey conveys messages on how we should live

The questions in a health survey aimed at young people raise issues of status and convey norms about what people should own and how they should be. Since the 1980s, the physical and mental health of Swedish children and young people has been measured by way of surveys. One of these is the international "Health Behavior in School-aged Children Survey" which is taken by 11-, 13- and 15-year-olds every fourth year during a class in school.

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February 16, 2021

Cataracts: New model explains origins of the eye condition

Cataracts are the most common eye ailment in humans. However, the exact processes leading to this condition are not fully understood. A team of researchers has now discovered that the composition of the protein solution plays a decisive role. Their conclusions are contrary to prevailing opinion in the field.

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February 16, 2021

It takes two to tango: When cells interact

When normal, motile cells come into contact, they typically change direction to avoid collision. But cancer cells behave quite differently. A new statistical analysis sheds light on the basis for this difference.

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February 16, 2021

Past earthquakes triggered large rockslides in the Eastern Alps

Geologists shed new light on a long-lasting debate about the trigger mechanism of large rockslides. Lake mud in two Alpine lakes in Tyrol reveal that rare strong earthquakes are the final cause of multiple, prehistoric rockslides in the Eastern Alps. The steep rock slopes were degraded by a series of prehistoric earthquakes, larger than any of the historically documented events in the region of the past ~1000 years.

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February 16, 2021

Star employees get most of the credit - and blame

Working with a 'star' employee - someone who demonstrates exceptional performance and enjoys broad visibility relative to industry peers - offers both risks and rewards, according to new research.

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February 16, 2021

A sharper look at the interior of semiconductors

A research team has developed a high-resolution imaging method based on extreme short-wave UV light. It can be used to examine internal structures in semiconductors non-destructively, and with nanometer precision.

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February 16, 2021

Unlocking the mystery behind skeletal aging

Researchers have identified the role a critical enzyme plays in skeletal aging and bone loss, putting them one step closer to understanding the complex biological mechanisms that lead to osteoporosis, the bone disease that afflicts some 200 million people worldwide. Findings could hold an important key to developing more effective treatments for osteoporosis and improving the lives of an aging population.

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February 16, 2021

Supercomputer turns back cosmic clock

Astronomers have tested a method for reconstructing the state of the early Universe by applying it to 4000 simulated universes using the ATERUI II supercomputer. They found that together with new observations the method can set better constraints on inflation, one of the most enigmatic events in the history of the Universe. The method can shorten the observation time required to distinguish between various inflation theories.

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February 16, 2021

Graphene 'nano-origami' creates tiniest microchips yet

Experimental physicists have developed the smallest microchips ever - 100 times smaller than conventional microchips. They believe that this next generation of microchips could lead to computers and phones running thousands of times faster.

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February 16, 2021

Regular caffeine consumption affects brain structure

Coffee, cola or an energy drink: caffeine is the world's most widely consumed psychoactive substance. Researchers have now shown in a study that regular caffeine intake can change the gray matter of the brain. However, the effect appears to be temporary.

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February 16, 2021

Kagome graphene promises exciting properties

For the first time, physicists have produced a graphene compound consisting of carbon atoms and a small number of nitrogen atoms in a regular grid of hexagons and triangles. This honeycomb-structured ''kagome lattice'' behaves as a semiconductor and may also have unusual electrical properties. In the future, it could potentially be used in electronic sensors or quantum computers.

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February 16, 2021

Shrubs and soils: A hot topic in the cool tundra

As the climate warms in the Arctic, shrubs expand towards higher latitudes and altitudes. Researchers investigated the impacts of dwarf shrubs on tundra soils in the sub-Arctic Fennoscandia.

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February 16, 2021

Researchers develop algorithm to find possible misdiagnosis

Researchers have developed an algorithm that can identify patients who may have been wrongly diagnosed. With the help of digital disease history, the algorithm is able to register disease trajectories that differ so much from normal trajectories that there may be a misdiagnosis. The algorithm has been developed on the basis of data from several hundreds of thousands of COPD patients.

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February 16, 2021

Promising biomarkers to diagnose mild traumatic brain injury

Certain plasma microRNAs could serve as diagnostic biomarkers in mild traumatic brain injury, a new study shows. The biomarkers were discovered in an animal model and they were successfully used also to diagnose mild traumatic brain injury in a subgroup of patients.

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February 16, 2021

Photosynthetic bacteria-based cancer optotheranostics

Natural purple photosynthetic bacteria (PPSB) can play a key role as a highly active cancer immunotheranostics agent that uses the bio-optical-window I and II near-infrared (NIR) light. PPSB have high tumor specificity and non-pathogenicity. Active anticancer efficacy and powerful multi-functions such as NIR-I-to-NIR-II fluorescence, photothermal conversion, reactive oxygen species generation, and contrasty photoacoustic effect, can be expressed using NIR light exposure to PPSB.

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February 16, 2021

Water is a probable vector for mammalian virus transmission

Water is a necessity for all life but its availability can be limited. In geographical areas experiencing dry seasons, animals congregate near the few freshwater sources, often reaching large densities. These sites may be key locations for pathogen transmissions, if viruses remain stable and infectious in water.

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February 16, 2021

Answer quickly to be believed

When people pause before replying to a question, even for just a few seconds, their answers are perceived to be less sincere and credible than if they had replied immediately, according to new research.

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February 16, 2021

The water surface is a fantastic place for chemical reactions

Using an advanced technique, scientists have demonstrated that a chemical reaction powered by light takes place ten thousand times faster at the air-water interface -- what we usually call the water surface -- than in the bulk of the water, even when the light has equivalent energy. This finding could help our understanding of the many important chemical and biological processes that take place at the water surface.

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February 16, 2021

TB study reveals potential targets to treat and control infection

Researchers may have found a new pathway to treat and control tuberculosis (TB), the disease caused by Mycobacterium tuberculosis (Mtb). Using single-cell RNA sequencing (scRNAseq), a next-generation sequencing technology, scientists were able to further define the mechanisms that lead to TB infection and latency.

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February 16, 2021

Climate change likely drove the extinction of North America's largest animals

A new study suggests that the extinction of North America's largest mammals was not driven by over-hunting by rapidly expanding human populations following their entrance into the Americas. Instead, the findings, based on a new statistical modelling approach, suggest that populations of large mammals fluctuated in response to climate change, with drastic decreases of temperatures around 13,000 years ago initiating the decline and extinction of these massive creatures.

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February 16, 2021

Groundwater recharge rates mapped for Africa

Rapid population growth in many African countries plus climate change has focused attention on the increased development of groundwater for irrigation and drinking water supplies.

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February 16, 2021

Large-scale study finds genetic testing technology falsely detects very rare variants

A technology that is widely used by commercial genetic testing companies is 'extremely unreliable' in detecting very rare variants, meaning results suggesting individuals carry rare disease-causing genetic variants are usually wrong, according to new research.

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February 16, 2021

Moiré patterns facilitate discovery of novel insulating phases

Materials having excess electrons are typically conductors. However, moiré patterns -- interference patterns that typically arise when one object with a repetitive pattern is placed over another with a similar pattern -- can suppress electrical conductivity, a study by physicists has found.

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Monday, February 15, 2021

February 15, 2021

New surgery may enable better control of prosthetic limbs

Researchers and surgeons have devised a new type of amputation surgery that can help amputees better control their residual muscles and receive sensory feedback. This restored sense of proprioception should translate to better control of prosthetic limbs, as well as reduction of limb pain, the researchers say.

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February 15, 2021

New skin patch brings us closer to wearable, all-in-one health monitor

Engineers have developed a soft, stretchy skin patch that can be worn on the neck to continuously track blood pressure and heart rate while measuring the wearer's levels of glucose as well as lactate, alcohol or caffeine. It is the first wearable device that monitors cardiovascular signals and multiple biochemical levels in the human body at the same time.

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February 15, 2021

Cheap, potent pathway to pandemic therapeutics

By capitalizing on a convergence of chemical, biological and artificial intelligence advances, scientists have developed an unusually fast and efficient method for discovering tiny antibody fragments with big potential for development into therapeutics against deadly diseases.

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February 15, 2021

New immunotherapy target discovered for malignant brain tumors

Scientists say they have discovered a potential new target for immunotherapy of malignant brain tumors, which so far have resisted the ground-breaking cancer treatment based on harnessing the body's immune system. The discovery emerged from laboratory experiments and has no immediate implications for treating patients.

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February 15, 2021

Higher elevation birds sport thicker down

A new study examines feathers across 249 species of Himalayan songbirds, finding that birds at higher elevations have more of fluffy down than lower elevation birds. Finding such a clear pattern across many species underscores how important feathers are to birds' ability to adapt to their environments. Furthermore, finding that birds from colder environments tend to have more down may one day help predict which birds are vulnerable to climate change simply by studying feathers.

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February 15, 2021

Invasive flies prefer untouched territory when laying eggs

A recent study finds that the invasive spotted wing drosophila (Drosophila suzukii) prefers to lay its eggs in places that no other spotted wing flies have visited. The finding raises questions about how the flies can tell whether a piece of fruit is virgin territory - and what that might mean for pest control.

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February 15, 2021

The comet that killed the dinosaurs

Scientists have put forth a new theory that could explain the origin and journey of the comet that killed the Chicxulub impactor and others like it.

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February 15, 2021

Membrane building blocks play decisive role in controlling cell growth

Lipids are the building blocks of a cell's envelope - the cell membrane. In addition to their structural function, some lipids also play a regulatory role and decisively influence cell growth. The impact of the lipids depends on how they are distributed over the plasma membrane.

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Sunday, February 14, 2021

Saturday, February 13, 2021

February 13, 2021

Biodiversity important at regional scales

New research shows that biodiversity is important not just at the traditional scale of short-term plot experiments -- in which ecologists monitor the health of a single meadow, forest grove, or pond after manipulating its species counts -- but when measured over decades and across regional landscapes as well. The findings can help guide conservation planning and enhance efforts to make human communities more sustainable.

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February 13, 2021

New prostate cancer test could avoid unnecessary biopsies

A urine test could have avoided one third of unnecessary prostate cancer biopsies while failing to detect only a small number of cancers, according to a validation study that included more than 1,500 patients.

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February 13, 2021

Aggressive brain tumor mapped in genetic, molecular detail

A new study has revealed a detailed map of the genes, proteins, infiltrating cells and signaling pathways that play key roles in driving glioblastoma. The study, of 99 tumors from patients, is the largest and most detailed schematic of this deadly brain tumor.

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February 13, 2021

How do our memories take shape?

Your brain is constantly evaluating which aspects of your experiences to either remember for later, ignore, or forget. Researchers have developed a new approach for studying these aspects of memory, by creating a computer program that turns sequences of events from a video into unique geometric shapes, which can be compared to the shapes of how people recounted the events. The study provides insight into how experiences are committed to memory and recounted to others.

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February 13, 2021

NASA's TESS discovers new worlds in a river of young stars

Astronomers have discovered a trio of hot worlds larger than Earth orbiting a much younger version of our Sun called TOI 451. The system resides in the recently discovered Pisces-Eridanus stream, a collection of stars less than 3% the age of our solar system that stretches across one-third of the sky.

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February 13, 2021

Lemurs show there's no single formula for lasting love

Humans aren't the only mammals that form long-term bonds with a single, special mate -- some lemurs and other animals do, too. Researchers are mapping the hormone receptors that underlie these primates' ability to pair up for the long haul. Their findings suggest the brain circuitry that makes love last in some species may not be the same in others.

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February 13, 2021

Origami-inspired antenna technology for use in small satellites

Scientists have revealed a novel antenna design for use in CubeSat nanosatellites using state-of-the-art communications systems like 6G communications. Using theoretical knowledge based on origami theory, mechanical dynamics, and antenna array principles, the researchers built a small, lightweight, and reconfigurable antenna for CubeSat depending on operational mode selected. This could potentially mark the beginning of a new era in satellite communications.

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February 13, 2021

Artificial emotional intelligence: a safer, smarter future with 5G and emotion recognition

The combination of new 5G communication technologies with AI-based systems are ushering in a 'smart generation' of vehicles, drones, and even entire cities. Now, researchers take things one step further by introducing a 5G-assisted emotion detection system that uses wireless signals and body movement. In their latest publication, they outline its working principle, application prospects, and potential security threats, highlighting the need for a robust, impregnable AI algorithm to drive it.

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Friday, February 12, 2021

February 12, 2021

Protein sequences provide clues to how SARS-CoV-2 infects cells

Researchers have identified sequences in human proteins that might be used by SARS-CoV-2 to infect cells. They have discovered that the virus might hijack certain cellular processes, and they discuss potentially relevant drugs for treating COVID-19.

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February 12, 2021

Researchers propose that humidity from masks may lessen severity of COVID-19

Masks help protect the people wearing them from getting or spreading SARS-CoV-2, the virus that causes COVID-19, but now researchers have added evidence for yet another potential benefit for wearers: The humidity created inside the mask may help combat respiratory diseases such as COVID-19.

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February 12, 2021

Identifying risk factors for elevated anxiety in young adults during COVID-19 pandemic

A new study has identified early risk factors that predicted heightened anxiety in young adults during the coronavirus (COVID-19) pandemic. The findings from the study could help predict who is at greatest risk of developing anxiety during stressful life events in early adulthood and inform prevention and intervention efforts.

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February 12, 2021

Limited transmission of COVID-19 from open schools but teachers were affected: Swedish study

In Sweden, upper-secondary schools moved online while lower-secondary schools remained open during the spring of 2020. A comparison of parents with children in the final year of lower-secondary and first year of upper-secondary school shows that keeping the former open had limited consequences for the overall transmission of the virus. However, the infection rate doubled among lower-secondary teachers relative to upper-secondary ones.

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February 12, 2021

Tap water access linked to dengue risk

Dengue virus is among growing number of mosquito-borne viruses that have adapted to spread in urban environments and are spreading with the increasing rate of urbanization. Now, researchers have identified tap water access in densely populated neighborhoods as a strong predictor of dengue risk in the city of Delhi.

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February 12, 2021

Most people are naturally armed against SARS-CoV-2, study finds

The majority of the population can produce neutralizing antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in severe cases of coronavirus disease 2019 (COVID-19), according to a new study. Moreover, the results support the use of combination antibody therapy to prevent and treat COVID-19.

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February 12, 2021

NIH experts discuss SARS-CoV-2 viral variants

The rise of significant variants of SARS-CoV-2 has attracted the attention of health and science experts worldwide. In a new editorial, experts outline how these variants have arisen, concerns about whether vaccines currently authorized for use will continue to protect against new variants, and the need for a global approach to fighting SARS-CoV-2 as it spreads and acquires additional mutations.

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February 12, 2021

Birds can 'read' the Earth's magnetic signature well enough to get back on course

Birdwatchers get excited when 'rare' migratory birds makes landfall having been blown beyond their normal range. But these are rare for a reason; most birds that have made the journey before are able to correct for large displacements and find their final destination. Now new research shows how birds displaced in this way are able to navigate back to their migratory route and gives us an insight into how they accomplish this feat.

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February 12, 2021

Scientists identify how harmless gut bacteria 'turn bad'

An international team of scientists has determined how harmless E. coli gut bacteria in chickens can easily pick up the genes required to evolve to cause a life-threatening infection. Their study warns that such infections not only affect the poultry industry but could also potentially cross over to infect humans.

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February 12, 2021

Algorithm that performs as accurately as dermatologists

A study has now been presented that boosts the evidence for using AI solutions in skin cancer diagnostics. With an algorithm they devised themselves, scientists show the capacity of technology to perform at the same level as dermatologists in assessing the severity of skin melanoma.

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February 12, 2021

Using nature's strategies in the development of new drugs

Dimerization of the human neuropeptides oxytocin and vasopressin can produce new types of bioactive molecules. Such new constructs provide several opportunities to optimize the efficacy of these neuropeptides for therapeutic application. The researchers were inspired for this approach from naturally occurring dimers.

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February 12, 2021

Metabolism: Light shed on structure of huge enzyme complex

A new method has enabled the natural structure of particularly large and complex enzymes to be revealed. Scientists have investigated a multi-enzyme complex that plays an essential role in metabolism and have discovered that it functions differently than previously thought. This will help scientists better understand certain diseases.

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February 12, 2021

Study reveals platinum's role in clean fuel conversion

Scientists have uncovered dynamic, atomic-level details of how an important platinum-based catalyst works in the water gas shift reaction. The experiments provide definitive evidence that only certain platinum atoms play an important role in the chemical conversion, and could therefore guide the design of catalysts that use less of this precious metal.

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February 12, 2021

Solar awnings over parking lots help companies and customers

Engineers look into the untapped potential of parking lots in a study that investigates the energy-related benefits of developing charging stations powered with solar canopies built into the parking infrastructure of large-scale retailers.

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February 12, 2021

Nanoparticle gel unites oil and water in manufacturing-friendly approach

Oil and water may not mix, but adding the right nanoparticles to the recipe can convert these two immiscible fluids into an exotic gel with uses ranging from batteries to water filters to tint-changing smart windows. A new approach to creating this unusual class of soft materials could carry them out of the laboratory and into the marketplace.

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February 12, 2021

Fewer older people are having strokes

A new study has found that people age 70 and older are having fewer strokes, and fewer people of all ages are dying from the disease.

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February 12, 2021

Can strep throat make tics worse in kids?

Exposure to the bacteria that causes strep throat does not appear to make Tourette syndrome and other chronic tic disorders worse in children and teens, according to a new study. However, exposure was associated with increased symptoms of hyperactivity and impulsiveness.

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February 12, 2021

'Handy pen' lights up when exposed to nerve gas or spoiled food vapors

Exposure to some odorless, colorless and tasteless gases, such as nerve agents, can be toxic or even lethal. And having the ability to detect other types of vapors could save people from eating spoiled or rotten food. Easy-to-use portable devices could, therefore, go a long way toward protecting the public. Now researchers have created a pen-like sensor that changes color when exposed to harmful gases.

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February 12, 2021

Mobile game that uses implicit learning improved children's short-term food choices

A new study examined how Indian 10- and 11-year-olds' food choices were affected by playing a pediatric dietary mobile game that uses implicit learning -- educating players without making them aware of the lessons through innovations in neurocognitive training and immersive technology. The study found that the game significantly improved children's food choices immediately after play.

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