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The NYQUIST LIIMIT-It is a sampling phenomenon, which limits the maximum fiequemcy shift measurement to one half of the sampling frequency (PRF).
By its nature, pulse wave Doppler is a sampling system while continuous wave Doppler is not. The nyquist limit is a theoretical maximum frequency that a
If the frequency shift is higher than the Nyquist frequency, aliasing occurs; i.e., the Doppler spectrum is cut off the Nyquist frequency and the remaining frequency shift is recorded on the opposite side of baseline.
The PRF varies inversely with the depth of the sample volume the shallower the location of the sample volume, the higher the PRF and Nyquist frequency. In other words, higher velocities can be recorded without aliasing by pulse wave Doppler if the sample volume is closer to transducer.
ENDOPLASMIC RETICULUM (ER) Eucaryotic celIs have two major compartments- nucleus and cytoplasm. Cytoplasm was known to have no structure until the discovery of electron micrsscop
The genotype of individual is EeFfGgHh, while hte genotype of individual #2 is EeFfggHH. A cross is performed between individual 1 and 2. What is the propability of producing the f
How can coacervates be formed of phospholipids or polypeptides? Phospholipids are amphipathic molecules, i.e., they present a polar portion and a nonpolar portion. In contact w
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Explain differance between Subphylum Chaetognatha and Subphylum Urochordata? Subphylum Chaetognatha: Larval stages of this small group share some of the characteristics with
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5 beneficial effects of decomposers and 2 harmful effects
discuss the importance of protozoa to humans
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