Today, rarefaction has grown as a technique not just for measuring species diversity, but of understanding diversity at higher taxonomic levels as well.
22.
Many headers are also resonance tuned, to utilize the low-pressure reflected wave rarefaction pulse which can help scavenging the combustion chamber during valve overlap.
23.
In the valveless engine, there will actually be two arrivals of rarefaction waves & mdash; first, from the intake and then from the tailpipe.
24.
Rarefaction of the white matter is seen through light microscopy and the small number of axons and U-fibers that were affected can also be seen.
25.
For clarification, the rarefaction pulse is the technical term for the same process that was described above in the " head, body, tail " description.
26.
The issue of overestimation was also dealt with by Daniel Simberloff, while other improvements in rarefaction as a statistical technique were made by Ken Heck in 1975.
27.
Rarefaction curves generally grow rapidly at first, as the most common species are found, but the curves plateau as only the rarest species remain to be sampled.
28.
Sound waves are what physicists call longitudinal waves, which consist of propagating regions of high pressure ( compression ) and corresponding regions of low pressure ( rarefaction ).
29.
Thus rarefaction can refer either to a reduction in density over space at a single point of time, or a reduction of density over time for one particular area.
30.
Gasses and liquids generally exhibit less hysteresis than solid materials ( eg, sound waves cause adiabatic compression and rarefaction ) and behave in a, mostly, Newtonian way.
