Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
Their results are iconsistent with the theory that the Milky Way Galaxy is surrounded by a massive “halo” of dark matter, but this is the first study of its…
“We want to map the largest volume of the universe yet, and to use that map to understand how the expansion of the universe is accelerating,” said Daniel…
The phenomenon in ferromagnetic nanodisks of magnetic vortices – hurricanes of magnetism only a few atoms across – has generated intense interest in the…
There are also many lingering mysteries surrounding the story of life on Earth, including the question of why sex is such a prevalent reproductive strategy. A…
The map was produced by the Sloan Digital Sky Survey III (SDSS-III). Early last year, the SDSS-III released the largest-ever image of the sky, which covered…
This is when NASA's twin Radiation Belt Storm Probes (RBSP) begin their mission to study the extremes of space weather. Lanzerotti, today one of the most…
Preterm premature rupture of membranes
(PPROM) is one of the leading causes of
perinatal morbidity and mortality. It complicates
…
University of Arkansas physicists and their colleagues have determined important information about the nanoscale properties of materials called relaxors, which…
Existing technologies allow researchers to measure single molecules on the x and y axes of a 2-D plane. The new technology allows researchers to make height…
Linda Kah and Jeffrey Moersch, associate professors in the Department of Earth and Planetary Sciences, are an integral part of the NASA team working on the…
The study also demonstrates the unique capabilities of the Linac Coherent Light Source (LCLS) X-ray laser at the U.S. Department of Energy (DOE)'s SLAC…
Details will be described at the SPIE conference on Quantum Communication and Quantum Imaging held in San Diego on August 15, 2012.Until now, the majority of…
Unlike the more common double-rainbow, which consists of two separate and concentric rainbow arcs, the elusive twinned rainbow appears as two rainbows arcs…
Though sophisticated three-dimensional imagery is abundant in computer-generated games and movies, a group of researchers from Disney Research, Zürich,…
The administration of bisphosphonates is always necessary if a disease with high levels of bone resorption is given. Osteone-crosis of the jaws can arise as a…
The present invention relates to the preparation of in situ-forming hydrogels by cross-linking macromonomers using the Diels-Alder reaction. Hydrophilic macromolecules are functionalized with dienes and dienophiles; the number of functionalities is at least two per macromonomer. The macromonomers are cross-linked in aqueous solutions outside or inside the human body by a [4+2] cycloaddition reaction to form highly elastic hydrogels. The hydrogels can be used as biomaterials for biomedical applications, as scaffolds for living cells, or as delivery system for the controlled release of proteins.
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