Tag: "quieter" at biology news
Dinosaur hearing, listening to muscle noise, quieter cubicles
...r example, Blomberg says, the simple step of using quieter
pavement materials could cut road noise in half in the main entrance of the Florida Everglades. Blomberg ( email@example.com ) notes that noise in national parks follows the same consistent pattern associated with other modern noise: the invention of ...
Cities change the songs of birds
...uency song notes compared to nearby individuals in quieter
territories. That single-population study, in Leid...its in noisy cities sing higher than great tits in quieter
forests: In other words, songs undergo a habitat-dependent acoustic shift in cities that is driven b...
Story tips from the Department of Energy's Oak Ridge National Laboratory, October 2006
... be within allowable limits. The bus would be much quieter
and have far less of an environmental impact compared to typical diesel-powered buses. The bus would also provide significant operational cost savings. The hybrid electric bus is being developed through a collaboration of several partners, including ...
Remarkable physiology allows crucian carp to survive months without oxygen
...ong cells, including the neurons in the brain. The quieter
the pumps, the less active and energy-consuming the brain is. However, if the pumps shut down, the cells die. Glycogen, the form in which the body stores carbohydrates, is the energy supply that vital organs such as the heart and brain use to survi...
Birdsong sounds sweeter because throats filter out messy overtones
...accompanied by a complex series of higher-pitched, quieter
tones called overtones. When the loudness of these overtones is high, the tone sounds more complex. Birds can control the loudness of overtones to increase the tonal purity of their song. Humans use a similar technique to produce different vowel soun...