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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.
Maedi/visna Maedi, a progressive pneumonia, and visna, a neurotropic disease, found in sheep and goats are caused by the Maedi/visna virus, belonging to the family Retroviridae
Classification of Aquatic Organisms After discussing the common types of the aquatic ecosystem let us now study in brief the ecological classification of aquatic organisms. I
Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of
What is Concentration Gradient? The graduated dissimilarity in concentration of a solute per unit - distance by a solution.
What is produced at the end of the cell cycle? how do they compare to each other and to the parent cell? What happens to the parent cell?
Explain Oxidative phosphorylation Oxidative phosphorylation : Synthesis of ATP from ADP and Pi during the passage of electrons in the respiratory chain.
Q Are there living beings without cells? Viruses are considered the only living beings that do not have cells. Viruses are constituted by genetic material RNA or DNA enwrapped
ae there non-parasitic viruses?
two types of amoebas waste and how they get rid of them
Q. Show types of hiatus hernia? Depending on the extent of herniation and placement of stomach, it could be of two types: 1, Para Oesophageal Hernia (oesophagus is in normal
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