244 articles from WEDNESDAY 13.11.2019
No deliveries: How cells decide when to accept extracellular packages
- ScienceDaily
- 19/11/13 23:03
Endocytosis, a fundamental process that cells use to take in macromolecules, functions a lot like an airlock on a spaceship -- but squishier, says a researcher. Researchers have studied how cells initiate and perform endocytosis since the 1960s, but in a new article they finally describes how cells shut down this important cellular machinery. And their findings are not without controversy.
'Hyperhotspots' could predict skin cancer risk
- ScienceDaily
- 19/11/13 23:03
Scientists report the discovery of 'hyperhotspots' in the human genome, locations that are up to 170-times more sensitive to ultraviolet radiation (UV) from sunlight compared to the genome average.
Mysteries behind interstellar buckyballs finally answered
- ScienceDaily
- 19/11/13 23:03
Mimicking conditions thought to exist around dying stars, researchers discovered a mechanism that could explain why planetary nebulae are teeming with complex carbon molecules.
Artificial intelligence tool predicts life expectancy in heart failure patients
- ScienceDaily
- 19/11/13 23:03
Cardiologists and physicists have developed a machine learning algorithm to predict the life expectancy in heart failure patients.
After visiting asteroid, Japan’s Hayabusa 2 probe heads back to Earth with samples
Japan's Hayabusa 2 spacecraft and its science team bid a bittersweet farewell to the asteroid Ryugu, 180 million miles from Earth, and began the months-long return trip to Earth with a precious set of samples. "This is an emotional moment!" the team tweeted on Tuesday. “It's sad to say goodbye to Ryugu,” project manager Yuichi Tsuda said at the Japan Aerospace Exploration...
Mysteries behind interstellar buckyballs finally answered
Scientists have long been puzzled by the existence of so-called "buckyballs"—complex carbon molecules with a soccer-ball-like structure—throughout interstellar space. Now, a team of researchers from the University of Arizona has proposed a mechanism for their formation in a study published in the Astrophysical Journal Letters.
When reporting climate-driven human migration, place matters
A quick Google search for "What is driving migration from Central America?" reveals that nearly all of the top hits claim climate change as a major catalyst for the mass movement of people out of their home countries. University of Arizona climate researchers, however, have shown that the reality is much more nuanced.
Maybe banking culture doesn't always make people dishonest
Scientists say they were unable to confirm a highly publicized 2014 study that suggested banking culture can promote dishonesty.
When reporting climate-driven human migration, place matters
- ScienceDaily
- 19/11/13 21:31
Location matters when talking about how climate might or might not be driving migration from Central America. Climate research in the dry corridor region revealed a complex pattern of change. If you average across the entire region you wouldn't see a trend going either way.
Multimaterial 3D printing manufactures complex objects, fast
- ScienceDaily
- 19/11/13 21:31
3D printing is super cool, but it's also super slow -- it would take 115 days to print a detailed, multimaterial object about the size of a grapefruit. A new method allows printing with up to 8 different inks in a fraction of the time, thanks to special printheads that can seamlessly switch inks up to 50 times per second.
Ancient Egyptians gathered birds from the wild for sacrifice and mummification
- ScienceDaily
- 19/11/13 21:31
In ancient Egypt, sacred ibises were collected from their natural habitats to be ritually sacrificed, according to a new study.
Experts unlock key to photosynthesis, a find that could help us meet food security demands
- ScienceDaily
- 19/11/13 21:31
Scientists have solved the structure of one of the key components of photosynthesis, a discovery that could lead to photosynthesis being 'redesigned' to achieve higher yields and meet urgent food security needs.
Phage therapy shows promise for alcoholic liver disease
- ScienceDaily
- 19/11/13 21:31
Researchers linked a gut bacteria toxin to worse clinical outcomes in patients with alcoholic liver disease, and discovered that treatment with bacteriophages clears the bacteria and eliminates the disease in mice.
Could the mysteries of antimatter and dark matter be linked?
- ScienceDaily
- 19/11/13 21:30
Researchers have performed the first laboratory experiments to determine whether a slightly different way in which matter and antimatter interact with dark matter might be a key to solving both mysteries.
Researchers unravel protective properties of telomere t-loops
- ScienceDaily
- 19/11/13 21:30
Loops at the ends of telomeres play a vital protective role preventing damage to chromosomes, according to new research. The study showed how the winding and unwinding of 't-loops' at the end of telomeres prevents chromosomes from being recognized as DNA damage. The study also uncovered how this process is regulated.
Extinct giant ape directly linked to the living orangutan
- ScienceDaily
- 19/11/13 21:30
Researchers have succeeded in reconstructing the evolutionary relationship between a two million year old giant primate and the living orangutan. It is the first time genetic material this old has been retrieved from a fossil in a subtropical area. This allows the researchers to accurately reconstruct animal, including human, evolutionary processes way beyond the limits known today.
In states where recreational marijuana is legal, problematic use increased among adults and teens
- ScienceDaily
- 19/11/13 21:30
Problematic use of marijuana among adolescents and adults increased after legalization of recreational marijuana use, according to a new study from NYU Grossman School of Medicine and Columbia University Mailman School of Public Health.
Slowing the progression of multiple sclerosis
- ScienceDaily
- 19/11/13 21:30
Over 77,000 Canadians are living with multiple sclerosis, a disease whose causes still remain unknown. Presently, they have no hope for a cure. Researchers have now identified a molecule named ALCAM which, once blocked, delays the progression of the disease. Their results, obtained from in vitro human and in vivo mouse studies, could lead to the development of a new generation of therapies to...
Microparticles could help fight malnutrition
- ScienceDaily
- 19/11/13 21:30
Researchers have now developed a new way to fortify staple foods with these micronutrients by encapsulating them in a biocompatible polymer that prevents the nutrients from being degraded during storage or cooking. In a small clinical trial, they showed that women who ate bread fortified with encapsulated iron were able to absorb iron from the food.
Understanding transporter proteins at a single-molecule level
- ScienceDaily
- 19/11/13 21:30
New research reveals the mechanics of how some transporter proteins function with stunning specificity.
Predicting evolution: Not just 'survival of the fittest'
- ScienceDaily
- 19/11/13 21:30
A new method of 're-barcoding' DNA allows scientists to track rapid evolution in yeast. The approach has implications for the prediction of dominant viral strains.
Something old, something new in the ocean's blue
- ScienceDaily
- 19/11/13 21:30
Microbiologists have discovered a new metabolic process in the ocean. Ranging from molecular structures of individual genes and detection of their global distribution, their results give insight into the pathway process and its degradation products and thus provide valuable information for future calculations of the ocean`s carbon dioxide balance.
Tuna carbon ratios reveal shift in food web
- ScienceDaily
- 19/11/13 21:30
The ratio of carbon isotopes in three common species of tuna has changed substantially since 2000, suggesting major shifts are also taking place in the phytoplankton populations that form the basis of the ocean's food web, according to a new international study. Much of the change occurring in phytoplankton physiology and species composition may be driven by increased ocean stratification, an...
Precisely poking cells en masse to cure cancer
- ScienceDaily
- 19/11/13 21:30
A novel microfluidic device addresses one of the most costly steps in the engineered cell therapy manufacturing process, namely gene delivery. Deterministic mechanoporation, or DMP, uses fluid flow to pull each cell in a large population onto its own tiny needle. The flow is then reversed to release the cells from the needles, leaving a singular and precisely defined pore within each cell that...
How everyday products are supercharging landfill gas, and what that means
- ScienceDaily
- 19/11/13 21:30
Synthetic compounds increasingly used in everyday products like shampoo and motor oil are finding their way into landfills and supercharging the biogas those landfills produce, researchers have found.
Discovery: New biomarker for cancer stem cells
- ScienceDaily
- 19/11/13 21:30
Medical researchers have discovered a new biomarker in cancer stem cells that govern cancer survival and spread, and it's raising hope that drug discovery to kill cancer stem cells could follow suit.
Firefighters can ease one another's job stress, but loving spouses may increase it
- ScienceDaily
- 19/11/13 21:30
Strong same-sex friendships among male firefighters can help cut down on their stress -- but loving relationships with their wives may increase anxiety for those who constantly face danger, according to a new study.
Ancient cup given to 1st marathon victor returned to Greece
An ancient Greek cup awarded as a prize to the marathon winner in the first modern Olympics of 1896 has been returned to Athens from a German university.
Tuna carbon ratios reveal shift in food web
The ratio of carbon isotopes in three common species of tuna has changed substantially since 2000, suggesting major shifts are taking place in phytoplankton populations that form the base of the ocean's food web, a new international study finds.
Precisely poking cells en masse to cure cancer
What if you could cure cancer by re-engineering patients' cells to better target and destroy their own tumors? With the advent of powerful new cellular engineering technologies, this is no longer the stuff of science fiction.
NASA provides an infrared analysis of Tropical Storm Fengshen
Tropical Storm Fengshen continued to strengthen in the Northwestern Pacific Ocean as NASA's Terra satellite passed overhead. Infrared imagery from an instrument aboard Terra revealed very high, powerful storms with very cold cloud top temperatures circling the center.
New study proposes light signature for detecting black hole mergers
Gravitational wave detectors are finding black hole mergers in the universe at the rate of one per week. If these mergers occur in empty space, researchers cannot see associated light that is needed to determine where they happened. However, a new study in The Astrophysical Journal Letters, led by scientists at the American Museum of Natural History and the City University of New York (CUNY),...
A virtual reality camera captures life and science aboard the space station
With only minutes until sunrise aboard the International Space Station (ISS), astronaut Nick Hague rushed to shut off the lights in the Japanese Experiment Module (JEM). Traveling 17,500 miles per hour, the space station orbits Earth 16 times in 24 hours, so every 90 minutes, the space station experiences a sunrise. For this sunrise, though, the speed of their approach was putting a time crunch on...
How everyday products are supercharging landfill gas, and what that means
Synthetic compounds increasingly used in everyday products like shampoo and motor oil are finding their way into landfills and supercharging the biogas those landfills produce, researchers at the University of Michigan have found.
Red tide, the toxic algae bloom that kills wildlife, returns to southwest Florida
Southwest Florida is warily watching the return of red tide, a toxic algae bloom that cost businesses nearly $150 million in losses last...
Venice declares state of emergency following 'apocalyptic' floods
Venice's mayor declared a state of emergency on Wednesday after "apocalyptic" floods swept through the lagoon city, flooding its historic basilica and inundating squares and centuries-old...
Countries Are Falling Far Short on Action to Tackle Climate Change as Fossil Fuel Use Increases, Says Energy Report
Countries’ plans to tackle climate change fall far short of what’s necessary to prevent temperatures from rising to an unsafe level that governments have vowed to prevent, according to a new report from the International Energy Agency (IEA). The use of fossil fuels, in particular is continuing to expand globally, putting the world on a…
Bell petitions Trudeau government to overrule CRTC on wholesale network rates
BCE Inc.'s Bell Canada has asked the federal cabinet to prevent the country's telecommunications regulator from slashing the wholesale rates that large carriers charge smaller rivals for access to their broadband...
Climate change may be behind fall of ancient empire, say researchers
Dramatic shift from wet to dry climate could have caused crop failure in Neo-Assyrian empireThe Neo-Assyrian empire was a mighty superpower that dominated the near east for 300 years before its dramatic collapse. Now researchers say they have a novel theory for what was behind its rise and fall: climate change.The empire emerged in about 912BC and grew to stretch from the Mediterranean down to...
Experts crack mystery of ancient Egypt’s sacred bird mummies
DNA analysis helps work out origin of nearly 6 million mummified ibisesAn ancient Egyptian mystery has been solved, according to researchers, who say they have cracked the conundrum of where millions of mummified birds came from.Pharaohs and members of the nobility were often mummified, but the practice was not reserved for humans – cats, crocodiles, mice and mongooses are among the mummified...
ELeCt-ing a better candidate for chemo delivery
Chemotherapy has been the backbone of cancer treatment for decades, but it is notorious for its toxicity to healthy cells, severe side effects, and poor targeting of the intended tumors. Efforts to improve chemotherapy's efficacy and tolerability include packaging drugs into nanoparticles, which can protect them from degradation in the body, control their release pattern, and shield the patient...
Ancient Egyptians gathered birds from the wild for sacrifice and mummification
In ancient Egypt, Sacred Ibises were collected from their natural habitats to be ritually sacrificed, according to a study released November 13, 2019 in the open-access journal PLOS ONE by Sally Wasef of Griffith University, Australia and colleagues.
First look at thermostat wars suggests women may be losing these battles
Your characterization of the thermostat war going on in your house is likely to depend at least in part on whether you're a man or a woman, new research suggests.