Brain’s stem cells slow ageing in mice

Nature News - Hace 2 horas 31 mins

Transplanted cells offer middle-aged rodents an increased lifespan.

Nature 547 389 doi: 10.1038/547389a

'True blue' chrysanthemum flowers produced with genetic engineering

Nature News - Hace 2 horas 31 mins

Scientists added two genes to the plant's genome to get the new hue.

Nature News doi: 10.1038/nature.2017.22365

Big names in statistics want to shake up much-maligned P value

Nature News - Hace 2 horas 31 mins

One of scientists’ favourite statistics — the P value — should face tougher standards, say leading researchers.

Nature News doi: 10.1038/nature.2017.22375

HIV milestone, discrimination suit and China's AI plans

Nature News - Hace 8 horas 35 mins

The week in science: 21–27 July 2017.

Nature 547 384 doi: 10.1038/547384a

ACA reduced disparities in health care access, report shows

EurekAlert! - Mar, 07/25/2017 - 22:00
The Affordable Care Act (ACA) has helped to close the gap in health care access between residents of poor and higher-income households, a new report by Boston University School of Public Health (BUSPH) researchers shows.

As more adults are diagnosed with cystic fibrosis, radiologists look for patterns

EurekAlert! - Mar, 07/25/2017 - 22:00
Marked improvements have been made over the past few decades in managing cystic fibrosis, but as more adults are diagnosed with the disease radiologists can do more to monitor the wide spectrum of CF in adults, including nonclassic imaging findings, according to an article published in the July 2017 issue of the American Journal of Roentgenology (AJR).

Bringing deep learning to big screen animation

EurekAlert! - Mar, 07/25/2017 - 22:00
Modern films and TV shows are filled with spectacular computer-generated sequences computed by rendering systems that simulate the flow of light in a three-dimensional scene and convert the information into a two-dimensional image. But computing the thousands of light rays (per frame) to achieve accurate color, shadows, reflectivity and other light-based characteristics is a labor-intensive, time-consuming and expensive undertaking. An alternative is to render the images using only a few light rays.

NASA's Terra Satellite catches the end of Tropical Depression Kulap

EurekAlert! - Mar, 07/25/2017 - 22:00
NASA's Terra satellite passed over Tropical Depression Kulap as the storm was winding down in the Northwestern Pacific Ocean. Strong wind shear was affecting the storm as a result of nearby Typhoon Noru.

Satellite sees Tropical Depression Greg as a ghostly swirl of clouds

EurekAlert! - Mar, 07/25/2017 - 22:00
Tropical Depression Greg appears as a ghostly swirl of low clouds on satellite imagery from NOAA's GOES-West satellite on July 27.

Using powerful Dark Energy Camera, scientists reach the cosmic dawn

EurekAlert! - Mar, 07/25/2017 - 22:00
Arizona State University astronomers Sangeeta Malhotra and James Rhoads, working with international teams in Chile and China, have discovered 23 young galaxies, seen as they were 800 million years after the Big Bang. The results from this sample have been recently published in the Astrophysical Journal.

UAlberta and McGill scientists uncover a hidden calcium cholesterol connection

EurekAlert! - Mar, 07/25/2017 - 22:00
It's well known that calcium is essential for strong bones and teeth, but new research shows it also plays a key role in moderating another important aspect of health -- cholesterol.Scientists at the University of Alberta and McGill University have discovered a direct link between calcium and cholesterol, a discovery that could pave the way for new ways of treating high blood cholesterol.

Triple-layer catalyst does double duty

EurekAlert! - Mar, 07/25/2017 - 22:00
A single, robust catalyst that splits water into hydrogen and oxygen has been developed with Earth-abundant materials that approach the efficiency of more expensive platinum, according to Rice and University of Houston scientists.

DAWN of a new day for stroke patients as study promises new options and a wider treatment window

EurekAlert! - Mar, 07/25/2017 - 22:00
Results of the first study showing some acute stroke patients could benefit from neuroendovascular surgery 6 to 24 hours after a stroke will be presented at the Society of NeuroInterventional Surgery's (SNIS) 14th Annual Meeting.

Massive star's dying blast caught by rapid-response telescopes

EurekAlert! - Mar, 07/25/2017 - 22:00
A blast of gamma rays from space detected in June 2016 is helping astronomers resolve long-standing questions about the universe's most powerful explosions.

Programming cells with computer-like logic

EurekAlert! - Mar, 07/25/2017 - 22:00
A team at Harvard's Wyss Institute for Biologically Inspired Engineering is presenting an all-in-one solution that imbues a molecule of 'ribo'nucleic acid or RNA with the capacity to sense multiple signals and make logical decisions to control protein production with high precision. The study's approach resulted in a genetically encodable RNA nano-device that can perform an unprecedented 12-input logic operation to accurately regulate the expression of a fluorescent reporter protein in E. coli bacteria.

Post-stroke patients reach terra firma with Wyss Institute's exosuit technology

EurekAlert! - Mar, 07/25/2017 - 22:00
In a new study published in Science Translational Medicine, a research team led by Conor Walsh collaborating with BU faculty members Terry Ellis, Lou Awad, and Ken Holt have demonstrated that exosuits can be used to improve walking after stroke -- a critical step in de-risking exosuit technology towards real-world clinical use.

Scientists regenerate retinal cells in mice in UW Medicine-led study

EurekAlert! - Mar, 07/25/2017 - 22:00
Scientists have succeeded in regenerating functional retinal cells in adult mice. Like humans, mice cannot repair damage to their retinas. However, because zebrafish can, researchers created in mice a version of the fish gene responsible for turning Muller glia into retinal cells if eye injury occurs. Researchers found way to prevent the gene's activity from being blocked as the mice got older. The new interneurons formed connections and reacted normally to signals from light-detecting cells in the retina.

Strange electrons break the crystal symmetry of high-temperature superconductors

EurekAlert! - Mar, 07/25/2017 - 22:00
Scientists have found surprising electron behavior that may help unravel the ever-elusive mechanism behind high-temperature superconductivity -- a phenomenon in which electrical current flows freely without resistance through a material at unusually high temperatures relative to those of conventional superconductors.

Brain cells found to control aging

EurekAlert! - Mar, 07/25/2017 - 22:00
Scientists at Albert Einstein College of Medicine have found that stem cells in the brain's hypothalamus govern how fast aging occurs in the body. The finding, made in mice, could lead to new strategies for warding off age-related diseases and extending lifespan. The paper was published online today in Nature.

Soft robotic exosuits help patients walk after stroke

EurekAlert! - Mar, 07/25/2017 - 22:00
Scientists have created lightweight and low-profile soft robotic ankle supports that could help stroke patients walk with less difficulty and more normal strides.


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