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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.
What are the lethal genes? The Lethal genes are genes having at least one allele that, while present in the genotype of an individual, causes death. There are dominant lethal a
Determine sequence weights for the sequences ACTA, ACTT, CGTT, and AGAT in problem 1 by using Thompson, Higgins, and Gibson method
Population Growth - Population Parameters and Regulation The size of a population depends upon the balance between natality and immigration through which individuals are added
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Which of the following statements is correct? A. Hemoglobin binds O2 cooperatively, while myoglobin does not. B. Myoglobin binds O2 cooperatively, while hemoglobin does not.
List host factor which play important role in implant survival. Host factors: a) Medical status of the patient b) Habits - Smoking - Parafunctional habits c) O
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A drug has a molec. weight of 200. How many grams would you use to make 100 ml of a solution that is isotonic (for man)? Assume that the diluent is distilled water and that the dru
Regeneration - Development Biology Regeneration has, intrigued scientists for several generations and has resulting in voluminous literature on the subject beginning from the
examples on woody perennial Angiosperm species and herbaceous annual angiosperm species. thanks
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