Can hamstring injury be predicted?
Hamstring strains account for most non-contact injuries in Australian rules football, football and rugby union, as well as track events like sprinting, and a team led by Dr. Anthony Shield, from
Queensland University of Technology,
and Dr. David Opar of Australian Catholic University, measured the eccentric hamstring strength of more than 200 AFL players from five professional clubs and may have a new metric for predicting problems.
Analysis of more than 8,000 women who participated in the world's largest study of two treatments for HER2-positive breast cancer reinforces clinical trial findings showing that trastuzumab (Herceptin) should remain the standard of care for this cancer.
Optical sensors are used all around the world to monitor the condition of difficult-to-access places like the underbellies of bridges, the exterior walls of tunnels, the feet of dams, long pipelines and railways in remote areas.
Though the Intergovernmental Panel on Climate Change (IPCC) has asked climate scientists not to attribute weather conditions to climate change, a new paper is doing just that.
A team writing in the Bulletin of the American Meteorological Society says that the atmospheric conditions associated with the unprecedented drought currently afflicting California are "very likely" linked to human-caused climate change.
In a region where modern humans are believed to have originated roughly 200,000 years ago,
DNA from the skeleton of a man who lived 2,330 years ago has a DNA profile that places it among the 'earliest diverged' – oldest in genetic terms – found to-date.
Somehow the group broke off early in human evolution and became geographically isolated so the skeleton is modern, but its DNA is old.
Epigenetics has been used and abused in many ways - can it tell researchers that an expectant mother had no electricity for a few days?
In January of 1998, what came to be called the North American Ice Storm of 1998 occurred. It knocked out power for days in cities and weeks in remote areas, impacting up to 4 million people. It was so worrisome that the government, concerned about panic among peaceful Canadians, deployed nearly 25 percent of its armed forces to keep peace in Quebec.
We know our bodies don't just change in size, which makes it an effective metric in a world in motion.
Psychologists have found that people tend to perceive their dominant hand as staying relatively the same size even when it's magnified, lending support to the idea that we use our hand as a constant perceptual "ruler" to measure the world around us.
To size up the world around us, we need to be able to translate the information that comes in through our eyes into units that are relevant to our everyday lives. The body is a particularly effective metric because it allows us to relate information about object size to actions that we're able to perform on or with the object.
Permafrost thaw kills forests in Canada, while drought kills trees in India and Borneo. In the U.S., in Virginia, over-abundant deer eat trees before they reach maturity, while nitrogen pollution has changed soil chemistry in Panama.
Continents apart, trees have many similar ways to die. Many of the changes occurring in forests worldwide are attributable to human impacts on climate, atmospheric chemistry, land use and animal populations - no surprise, writing papers lamenting humanity is why many conservation groups exist. And hyperbolic cultural pandering has led to calls for a new geologic period in Earth's history—the Anthropocene, the Age of Humans.
Tourette syndrome is a developmental disorder characterized by involuntary, repetitive, and stereotyped movements or utterances.
New evidence explains how those with Tourette syndrome in childhood often manage to gain control over those tics.
In individuals with the condition, a portion of the brain involved in planning and executing movements shows an unusual increase compared to the average brain in the production of a primary inhibitory neurotransmitter known as GABA.
Artifacts from a 325,000-year-old site in Armenia finds that human technological innovation occurred intermittently throughout the Old World, rather than spreading from a single point of origin (usually hypothesized as Africa), as previously thought.
Electricity and magnetism rule our digital world but they are really 19th century advancements still being optimized in the 21st.
In our current scheme, semiconductors process electrical information while magnetic materials enable long-term data storage but research team has discovered a way to fuse these two distinct properties in a single material.
Scientists have time detected a carbon-bearing molecule with a "branched" structure in interstellar space.
The molecule, iso-propyl cyanide (i-C3H7CN), was discovered in the giant gas cloud Sagittarius B2, a region of ongoing star formation close to the center of our galaxy that is a hot-spot for molecule-hunting astronomers.
If good things come in small packages, then nanoparticles are going to make engineers very happy.
The National Institute of Standards and Technology (NIST) recently issued Reference Material (RM) 8027, the smallest known reference material ever created for validating measurements of these man-made, ultra-fine particles between 1 and 100 nanometers (billionths of a meter) in size.
By Eelco Rohling, University of Southampton
Ice sheets respond slowly to changes in climate, because they are so massive that they themselves dominate the climate conditions over and around them. But once they start flowing faster towards the shore and melting into the ocean the process takes centuries to reverse. Ice sheets are nature’s freight trains: tough to start moving, even harder to stop.-->
It's no surprise that water was crucial to the formation of life on Earth. What may surprise you is that water on earth is older than the sun itself.
Identifying the original source of Earth's water is key to understanding how life-fostering environments came into being and how likely they are to be found elsewhere. A new paper in Science says that much of our Solar System's water likely originated as ices that formed in interstellar space. Water is found throughout the Solar System, not just on Earth; on icy comets and moons, and in the shadowed basins of Mercury and in mineral samples from meteorites, the Moon, and Mars.
A team of researchers headed by Prof Dr. Nicole Frankenberg-Dinkel at Ruhr-University Bochum have revealed similarities and differences in the assembly of the light-harvesting machinery of the cryptophyte Guillardia theta compared to cyanobacteria and red algae.
Cryptophytes: Matryoshka dolls of the waters
Melatonin, a hormone that governs sleep and jet lag in humans, may also drive the mass migration of plankton in the ocean, according to a report by scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg.
Melatonin, is essential to maintain our daily rhythm, and the scientists have now discovered that it governs the nightly migration of a plankton species from the surface to deeper waters. The findings, published online today in Cell, indicate that melatonin's role in controlling daily rhythms probably evolved early in the history of animals, and hold hints to how our sleep patterns may have evolved.