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Major acoustical science and technology conference: Nov. 15-19
Date:10/22/2010


"For plant-dwelling insects, substrate-borne sound signaling remains the best solution for communication in dense vegetation typical for the tropics. They communicate with vibratory signals of the dominant frequency around 100 Hz, which travel through plants with low attenuation, creating standing wave conditions in the plant's rod-like structures."
See: http://asa.aip.org/web2/asa/abstracts/search.nov10/asa575.html

6) Whales Sing Louder With Their Tails Up
"Male humpback whale song is thought to mediate inter and intrasexual interactions and to have an important role in mating strategies. This behavior was investigated on the Abrolhos bank off Brazil. The results show that males increase the acoustic area of their song by almost nine times singing underwater or in the tailup posture and, for the lower frequency components of the song, the tailup posture further increases sound transmission."
See: http://asa.aip.org/web2/asa/abstracts/search.nov10/asa800.html

7) New Technology Counts Fetus Heartbeats
"In utero, monitoring of fetal well being or suffering is today an open challenge due to the high number of clinical parameters to be considered. [Our] results are really encouraging, and they enable us to plan the use of automatic classification techniques in order to discriminate between healthy and suffering fetus."
See: http://asa.aip.org/web2/asa/abstracts/search.nov10/asa146.html

8) Quieter Wind Turbine Blades Designed
"As more turbines are installed near population centers, the environmental impacts associated with these machines, such as noise, are also becoming more obvious. Designs and preliminary measurements of trailing edge modifications to the
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Contact: Jason Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

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