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- 19/12/30 23:43
Are we there...
108 articles from MONDAY 30.12.2019
Are we there...
Today (Dec. 30), a team of researchers from the University of California, San Francisco and the Children’s National Hospital in Washington, D.C., published the results of an investigation into whether or not pharmacy workers could provide accurate information on the disposal of two classes of drugs: opioids and antibiotics. The results are frightening: The researchers enlisted volunteers...
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The simultaneous use of antibodies based on two differing mechanisms of action leads to a more effective destruction of tumors. This has been demonstrated by a study in animal models by medical oncologists and scientists. Patients who do not respond to current immunotherapy options could benefit most from this new treatment.
Life as we know it requires phosphorus, and lots of it. But phosphorus is scarce. A new study reports that certain types of carbonate-rich lakes, which could have formed on early Earth, have the right chemistry to keep phosphorous levels high and available to organisms.
The theoretical notion of a 'quantum heat engine' has been around for several decades. It was first introduced around sixty years ago by Scovil and Schulz-DuBois, two physicists at Bell Labs who drew an analogy between three-level masers and thermal machines.
The American coot is a somewhat drab water bird with gray and black feathers and a white beak, common in wetlands throughout North America. Coot chicks, however, sport outrageously bright orange and red feathers, skin, and beaks. A new study explains how the bright coloring of coot chicks fits in with the reproductive strategy of their less colorful parents.
Life as we know it requires phosphorus. It's one of the six main chemical elements of life, it forms the backbone of DNA and RNA molecules, acts as the main currency for energy in all cells and anchors the lipids that separate cells from their surrounding environment.
Research on fossilized fish from the late Devonian period, roughly 375 million years ago, details the evolution of fins as they began to transition into limbs fit for walking on land.
When Nalini Nadkarni was a kid, she'd run home from school, climb into one of the eight maple trees in her parents' backyard and spend an afternoon there with an apple and a book.
A growing number of Chinese scientists working in the United States and other parts of the world are returning to their homeland, enhancing China's research productivity.
For the past few months Hasan Zaidi's phone has been ringing nonstop with calls from desperate residents in Pakistan hoping to get their hands on his newly invented air purifier as smog blankets the country.
Dense fog and hazardous air pollution blanketed northern India and disrupted hundreds of flights on Monday, as harsh winter weather sent temperatures plunging to near-record lows.
What will people remember about the year 2019 in the year 3019? Just as they're likely to recall 1969 as the year humans first walked on the moon, they might well hold up the first portrait of a black hole as this year's most memorable achievement. By that measure, there's little question that the Event Horizon Telescope's radio view of M87's supermassive black hole, 55 million...
Not too long ago Coral Ben-Aharon, a 15-year-old sophomore at Granada Hills Charter High School, didn't bother to use her school's recycling bins—and didn't know how plastic waste contributes to greenhouse gas emissions.
Gadgets that resemble little black hats are showing up on the heads of alligators in South Carolina.
Congress is demanding that the Department of Energy investigate an aging, cracking U.S. nuclear waste dump threatened by climate change and rising seas in the Marshall Islands.
This blog post originated in the 2018 Science Mission Directorate Science and Technology Report. PROJECT Mars Helicopter KEY POINTS The Mars Helicopter is a technology demonstration for the Mars 2020 rover mission, intended to show the feasibility and utility of using helicopters for Mars exploration. This technology may enable future missions to perform reconnaissance or independent...
Citrus greening disease, or Huanglongbing (HLB), is deadly, incurable, and the most significant threat to the citrus industry. Most HLB research focuses on the tree canopy, but scientists in California studied the impact of HLB on root systems. They recently published the first study to report on the response of two different varieties of citrus to the causal bacterium, 'Candidatus Liberibacter...
A new study recently conducted by astronomers has investigated the Melotte 105 open cluster with the aim on uncovering its fundamental properties. The research, presented in a paper published December 18 on arXiv.org, provides more accurate measurements of the cluster's distance, age and metallicity.
A team of scientists from the Research Center "Fundamental Problems of Thermophysics and Mechanics," of Samara Polytech is engaged in the construction of new mathematical models and the search for methods for their study in relation to a wide range of local nonequilibrium transport processes in various physical systems. An innovative approach developed not so long ago is based on a modern version...
More than a million cases were reported in south-east Asia last year with poorer households most at riskThe global toll of dengue fever is becoming well known, with rising temperatures contributing to severe outbreaks that made 2019 the worst year on record for the disease.In 1970 only nine countries faced severe dengue outbreaks. But the disease, which is spread by mosquitoes that can only...
One of the wonders of cell biology is its symmetry. Mammalian cells have one nucleus and one cell membrane, and most humans have 23 pairs of chromosomes. Trillions of mammalian cells achieve this uniformity—but some consistently break this mold to fulfill unique functions. Now, a team of Johns Hopkins Medicine researchers have found how these outliers take shape.
The North Atlantic Current transports warm water from the Gulf of Mexico towards Europe, providing much of north-western Europe with a relatively mild climate. However, scientists suspect that meltwater from Greenland and excessive rainfall could interfere with this ocean current. Simulations by scientists from the University of Groningen and Utrecht University showed that it is unlikely that the...
A metabolite in plants that regulates the growth of anchor roots—vital for sustaining water and nutrient uptake in plants—has been identified and may have useful applications in agriculture.
Researchers at the Biozentrum of the University of Basel have demonstrated how bacteria coordinate cell division with the replication of their genetic material. In an interdisciplinary study they explain why the current concept of the bacterial cell cycle has to be rewritten. The results were published in eLife.
Two-dimensional solar materials may offer a way to extract more energy from sunlight. By tuning the structure of a 2-D perovskite solar material, researchers from KAUST and the Georgia Institute of Technology have shown they can prolong the lifetime of highly energetic hot carriers generated by light striking the material. The approach could offer a way to capture solar energy more efficiently.
This year was the hottest ever registered in Russia, the country's weather chief said on Monday, as climate change pushes global temperatures to record highs.
Due to the advantages such as large specific surface area, adjustable pore size and tunable functionality, metal-organic frameworks (MOFs) have shown great application potential in the fields of gas adsorption and separation, catalysis, sensing and biomedicine. However, most metal-organic frameworks have pore sizes below 2 nm and are typical microporous structures, which limits pore structure and...
Tropical Cyclone Calvinia formed on Dec. 29 and by the next day, its clouds from a band of thunderstorms on its western side had blanketed the island of Mauritius in the Southern Indian Ocean.
NASA's Terra satellite passed over the Southern Pacific Ocean on Dec. 30 and found that Tropical Storm Sarai continued to move further away from Fiji and toward Tonga.
Holding particular biological resources, the Tibetan Plateau is a unique geologic-geographic-biotic interactive unit and hence plays an important role in the global biodiversity domain. The Tibetan Plateau has undergone vigorous environmental changes since the Cenozoic, and played roles as switching from "a paradise of tropical animals and plants" to "the cradle of Ice Age mammalian fauna."
Scientists from Skoltech and Heriot-Watt University proposed extracting methane by injecting flue gas into permafrost hydrate reservoirs. Since the flue gas contains carbon dioxide, the new technology will also contributes to reduction of this green house gas in the Arctic atmosphere. The results of their study were published in the journal Scientific Reports.
New research strengthens prior findings on the link between vitamin E acetate and EVALI (E-cigarette or vaping product use-associated lung injury).
The solutions to today’s puzzlesEarlier today I set you the following problems:1) How can someone born in 2020 be older than someone born in 2019? Continue reading...
A Toronto-based investment firm has signed a $1-billion deal to buy the Canadian space technology company behind Radarsat Earth-observation satellites and the Canadarm robotic mechanisms on the International Space...
Grizzly bears spend many months in hibernation, but their muscles do not suffer from the lack of movement. In the journal Scientific Reports, a team led by Michael Gotthardt reports on how they manage to do this. The grizzly bears' strategy could help prevent muscle atrophy in humans as well.
Researchers from HSE University have shown that the 2010 happiness level of citizens from Tunisia, Libya, Egypt, and other Arab countries could provide a much more accurate forecast of the Arab Spring events than purely economic indices, such as GDP per capita and unemployment rate.
As the world warms, a new study is helping scientists understand how cone-bearing trees like pines and junipers may respond to drought.
New York is the fifth largest producer of onion bulbs in the United States, producing over 110,000 metric tons from over 2,800 hectares. Most of these onions are grown on high organic matter soils, where foliar disease management is crucial to productivity and profitability. These foliar diseases include Botrytis leaf blight, purple blotch, downy mildew, and Stemphylium leaf blight.