In a study published in the December 24, 2004 issue of the journal Science, Michael Moore and Greg Early at the Woods Hole Oceanographic Institution (WHOI) have documented bone lesions in the rib and chevron bones of sperm whales, most likely caused by tissue damage from nitrogen bubbles that form when the animals rise to the surface.
The WHOI biologists found that the lesions grow in severity with age, and are found in animals from the Pacific and the Atlantic Oceans. The lesions were found in animals that died up to 111 years ago, and there appears to be no increase in the lesion prevalence since the oceans were industrialized.
Moore and Early studied sixteen partial or complete sperm whale skeletons from the Pacific and Atlantic Oceans that had been archived in museums. They found a series of changes in bones attached to the backbone, namely rib bones, and other small bones in the sperm whales tail region. The changes are patches of bone death as a result of obstructed blood supply to the joint surfaces of the bone.
Shelley Dawicki | EurekAlert!
Microscope measures muscle weakness
16.11.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
Good preparation is half the digestion
16.11.2018 | Max-Planck-Institut für Stoffwechselforschung
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Life Sciences