Now, self-healing materials can mimic human skin, healing again and again
...els. In the final steps, the researchers deposit a brittle epoxy coating on top of the substrate, and fill the network with a liquid healing agent. In the researchers tests, the coating and substrate are bent until a crack forms in the coating. The crack propagates through the coating until it encounters one...First international conference on self-healing materials
...nois is focusing on a specific class of relatively brittle plastics. He has embedded microcapsules in the plastic which contain a healing substance. If a crack develops in the material, the microcapsules will break, and this substance (a stable monomer) is then released into the material. When the monomers c...Super-thin membrane, 50 atoms thick, sorts individual molecules
...ious to be cost effective, and its membrane was so brittle that it required an elaborate support structure to prevent it from shattering. While McGrath knew he might have the exact filter researchers have been searching for, he needed to test if the predictions held up. "When you build something at this sc...Leibniz Prize winners 2007 announced
...e first serious quantum-mechanical calculations of brittle fracture behaviour, he expanded the thermodynamic model that had been the textbook standard with important insights into the breaking of atomic bonds. He is instrumental in the development of multiscale materials modelling, a cutting-edge discipline ......ocally, runaway cracks can split the material in a brittle manner. Now in bone, half (by volume) is a stretch...brous protein called collagen and the other half a brittle mineral phase called apatite. By as yet incompletely understood construction strategies, such biomin...Decoded sea urchin genome shows surprising relationship to humans
...d over 540 million years ago and include starfish, brittle stars, sea lilies, and sea cucumbers. Following the great extinction of animals 250 million years ago, the modern sea urchins emerged as dominant echinoderm species. The purple sea urchin emerged in the North Pacific Ocean during a rapid burst of spe...Decoded sea urchin genome shows surprising relationship to man
...d over 540 million years ago and include starfish, brittle stars, sea lilies, and sea cucumbers. Following the great extinction of animals 250 million years ago, the modern sea urchins emerged as dominant echinoderm species. The purple sea urchin emerged in the North Pacific Ocean during a rapid burst of spe......brous protein called collagen and the other half a brittle mineral phase called apatite. These com-ponents ma...e tissue to sustain large strains. This is why the brittle apatite remains shielded from excessive loads and does not break. The results also showed that the...Genetic mutation explains form of brittle bone disease
...ubset of cases of osteogenesis imperfecta (OI), or brittle bone disease, whose origin had until now remained ... the genetic mutation known to cause most cases of brittle bone disease. Most cases of brittle bone disease are known to be caused by a structural change in a...Consuming cola may up osteoporosis risk for older women
...f developing osteoporosis, a disease of porous and brittle bones that causes higher susceptibility to bone fractures. Now, Katherine Tucker, PhD, director of the Epidemiology and Dietary Assessment Program at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, and colleagues hav...What animals can tell us about hemorrhage, organ transplants and aging
...t 10 hours? Brine shrimp can lie on the shore like brittle skeletons, but snap back to life when placed in water? Naked mole rats can live for 28 years but their mice cousins live only three? Birds live longer than their ultra-high metabolic rates would predict? Matthew T. Andrews of the University of Min...Rhode Island physician honored nationally for establishing first HIV menopause clinic
...stands on August 8. Hot flashes, depression, and brittle bones are all symptoms that have been linked to menopause, but they're also common to HIV-positive individuals on antiretroviral medication. Antiretroviral combination therapy has been successful at significantly extending the lives of those with HIV...Carnegie Mellon researchers discover new cell properties
...but under excessive force the HGPS lamina was more brittle and eventually fractured. "The mutant HGPS lamina is like an egg shell that cracks when excessive pressure or force is exerted against it," Dahl said. "By contrast, normal lamina resembles the rubbery outer shell of a racquetball, which does not br...Brittle prions are more infectious
... Medical Institute researcher have discovered that brittle prion particles break more readily into new "seeds," which spread infection much more quickly. The discovery boosts basic understanding of prion infections, and could provide scientists with new ideas for designing drugs that discourage or prevent pr...A tiny protein plays a big role in DNA repair
...ichothiodystrophy (TTD), which is characterized by brittle hair and nails, scaly skin, and neurological degeneration. To study the role of the TTDA subunit in the TFIIH complex's functions, the researchers tagged TTDA and the XPD subunit with green fluorescent protein (GFP) to monitor and compare their move...Cold case: Looking for life on Mars
...d traces left by the tiniest microbes. Svalbard is brittle cold, very dry, and rocky, much like the Martian environment, making it an excellent test bed." Nitrogen is essential to DNA, RNA, and protein. All life depends on it. The scientists looked at how a certain type, or isotope, of nitrogen was distribut...Smithsonian guide to the biodiverse marine environment of Panama's Bocas del Toro
...nities. Later chapters present two new species of brittle star, three new species of Micura worms and overviews of sponges, hydroids, sea squirts, black corals, soft corals, porcellanid crabs and peanut worms. In 2003 STRI inaugurated a new, award-winning, low-impact laboratory in Bocas (see links). In a...Cancer drug might help kids with fatal 'aging' syndrome
...sociated with old age -- wrinkled skin, hair loss, brittle bones and atherosclerosis, which usually causes their deaths by about age 13. There's no known treatment. But the new Hopkins research, and similar results from other labs, shows that a class of drugs known as farnesyl transferase inhibitors, or FTIs...Novel technique offers new look at ancient diet dogma
...y the tooth's owner. Pits indicate a diet of hard, brittle foods, like nuts and seeds, while scratches imply ...nus ate tough foods and P. robustus dined on hard, brittle fare. However, the researchers used a new technique developed by Ungar and his colleagues that combi...New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon
... studying Venice's lagoon Deheyn will use luminous brittle stars, a cousin species of starfish, to determine whether contaminants in the Venice Lagoon are bioavailable (the amount of contaminants locally present and shown to be accumulated by the organism) and could potentially induce stress on the local eco...