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Tag: "bounce" at biology news

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

...ppears that coral reefs are very resilient and can bounce back magnificently if subjected to good management practices and 10 years or so of pristine conditions," says Robert van Woesik, one of the authors of a new study showing that reefs off Palau, Micronesia, have recovered surprisingly well from a 1998 ...

Satellites shed light on global warming

...econd then recording how long their echoes take to bounce back to the satellite platform. The sensor times its pulses' journey down to under a nanosecond to calculate the distance to the planet below to a maximum accuracy of two centimetres. ESA has had radar altimeters in orbit since July 1991, when ERS-1 ...

Coral reefs are increasingly vulnerable to angry oceans

...l warming could limit the capacity of the reefs to bounce back from periods of high wave forces, according to the researchers. For example, episodes of unusually hot temperatures can cause corals' cells to become toxic, or bleached. Another problem is overfishing, which can deplete the fish that eat dead co...

Stormy days ahead for coral reefs

...and human activity could impair reefs' capacity to bounce back from periods of high wave forces, say the researchers. These include episodes of unusually hot temperatures, which can cause corals' cells to become toxic ("coral bleaching"); and overfishing, which can deplete the fish that eat seaweeds and de...

Purdue creates new low-cost system to detect bacteria

...ry research. Particles of light, called photons, bounce off of the colony, and the pattern of scattered light is projected onto a screen behind the petri dish. This "light-scatter pattern" is recorded with a digital camera and analyzed with sophisticated software to identify the types of bacteria growing ...

Protein 'nanosprings' most resilient found in nature

...trength." "The fully extended molecules not only bounce back to their original shape in real time, but they also generate force in the process of this rapid refolding ?something that had never been seen before," added HHMI investigator Vann Bennett, professor of cell biology at Duke University Medical Cen...

Researchers develop portable 'vein finder' for faster, more accurate injections

...icrowave signals to a moving car, and when signals bounce back, the change in their frequency provides a measurement used to determine the vehicle's speed. Doppler ultrasound is similar, except that acoustical waves are transmitted. Compared to static skin and tissue, blood is a moving substance, so ultra...

Nanotechnology may find disease before it starts

...trasound signals are those produced by sound waves bounce off a hard surface. While not biodegradable, the nanoparticles used in the study were biologically inert. The researchers took ultrasound images of the animals' livers every five minutes for 90 minutes after the injection. The nanoparticles had accu...

Ancient DNA helps UF researchers unearth potential hemophilia therapy

...her said. Transposons have the natural ability to bounce to different positions in DNA, allowing them to chauffeur genes into the cell. The transposon UF researchers used is one of a few that work in mammals, but until University of Minnesota scientists discovered it in 1997, it had remained hidden in the ...

Environmental lessons from tsunami as world's coastal population doubles

...stal populations and ecosystems are more likely to bounce back from extreme coastal disasters by protecting local environments and building on local knowledge, according to a report published in Science. And the aftermath of the Asian tsunami has given valuable insight into handling extreme coastal disaste...

Woods Hole Research Center plans controlled burn in Amazon rainforest

...n others, and others that appear to have died soon bounce back by resprouting from their roots. In these repeated fires, scientists will learn just how resilient some of these species are. It is quite clear, however, that the composition of the forest will be altered following a fire, and researchers will m...

Falling ants glide back to trunk to avoid dangers of forest floor

... tumble down the trunk a few feet and occasionally bounce off. They can actually make 180 degree turns in mi... tree at a steep angle. This means they frequently bounce off the trunk, though, as Yanoviak initially noted, they just make a 180 degree turn and try again ?...

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