WASHINGTON (Nov. 20, 2019)--Gamma-ray bursts are the most powerful explosions in the cosmos. These explosive events last a fraction of a second to several minutes and emit the same amount of gamma rays as all the stars in the universe combined. Such extreme amounts of energy can only be released during catastrophic events like the death of a very massive star, or the merging of two compact stars, and are accompanied by an afterglow of light over a broad range of energies that fades with time.
Hamilton, ON (November 20, 2019) - A study from McMaster University has shown that traditional ways of learning anatomy remain superior to those that rely on digital media.
The research suggests that virtual reality (VR) and mixed reality (MR) are inferior to traditional physical models of learning, and have major disadvantages in cost and functionality.
The findings also support the pivotal role of stereoscopic vision - the ability to perceive depth using the slightly different view from each eye - in efficient anatomy learning.
BIRMINGHAM, Ala. - After heart attack injury, several fatty-acid-derived bioactive molecules -- including one called resolvin D1 -- play an essential signaling role to safely clear inflammation and help repair heart muscle. The mechanism of how this resolution occurs is not well-understood.
There is a receptor on the surface of many immune cells called ALX/FRP2, and in models of atherosclerosis, ALX/FPR2 is known to act as a sensor to help resolve inflammation.
Researchers from the Institute of Neurosciences of the University of Barcelona (UBNeuro) and the August Pi i Sunyer Biomedical Research Institute (IDIBAPS) described a mechanism, the increase of proteinaceous synthesis, which takes part in the degeneration of the type of neurons that are affected in Huntington's disease, a genetic neurodegenerative disease. These results, published in the science Brain, could help researchers design new therapies to treat this and other brain-affecting diseases.
The human genome contains 4.5 million copies of transposable elements (TEs), so-called selfish DNA sequences capable of moving around the genome through cut-and-paste or copy-and-paste mechanisms. Accounting for 30-50% of all of the DNA in the average mammalian genome, these TEs have conventionally been viewed as genetic freeloaders, hitchhiking along in the genome without providing any benefit to the host organism.
New observations from the NASA/ESA Hubble Space Telescope have investigated the nature of the gamma-ray burst GRB 190114C.
Gamma-ray bursts are the most powerful explosions in the Universe. They emit most of their energy in gamma rays, light which is much more energetic than the visible light we can see with our eyes.
Researchers have devised a new plan of attack against a group of deadly childhood brain cancers collectively called diffuse midline gliomas (DMG), including diffuse intrinsic pontine glioma (DIPG), thalamic glioma and spinal cord glioma. Scientists at the National Institutes of Health, Stanford University, California, and Dana-Farber Cancer Institute, Boston, identified a drug pair that worked together to both kill cancer cells and counter the effects of a genetic mutation that causes the diseases.
NASA's Hubble Space Telescope has given astronomers a peek at the location of the most energetic outburst ever seen in the universe -- a blast of gamma-rays a trillion times more powerful than visible light. That's because in a few seconds the gamma-ray burst (GRB) emitted more energy than the Sun will provide over its entire 10-billion year life.
NASA found moderate rainfall occurring over a large area in Tropical Storm Sebastien, as it moves through the Atlantic Ocean.
NASA has the unique ability to measure and calculate rainfall rates in storms from the Global Precipitation Measurement mission or GPM satellite. That data is combined with data from other satellites to form NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) forecast .
Plant growth-promoting Streptomyces assemble into the internal, root endophytic compartments of a wide variety of plants around the world. These bacteria are well-known for their ability to produce a huge array of secondary metabolites and also protect against pests.
Recent research published in Phytobiomes Journal demonstrates that melanin-producing Streptomyces are more likely to colonize plants, which has been shown to be protective for many different organisms.