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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.
Discuss about xeno-transplanation Most defects / diseases treated by xeno-transplanation are not genetic in origin so the therapy will have no impact on gene pool in terms of c
name the blood vessel which bring waste product to kidney
What is the difference between homozygosity and heterozygosity? Homozygosity happens when an individual has two identical alleles of a gene, for instance, AA or aa. Heterozygos
Asexual Reproduction - Its Prevalence and Significance Having studied the several aspects of asexual reproduction in the non-chordates we can now make a few generalizations.
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Q. International Codes used for system of binomial nomenclature? In 1753 Linnaeus suggested a system of binomial nomenclature where each individual is denoted by two epithets,
Feeding mechanism in holozoic animal
What is (a) the male gamete, and (b) the female gamete in a flowering plant? (a) The male gamete in a flowering plant is the pollen grain (strictly, the gamete is the male
DNA damage caused by ultraviolet light: 1. Cyclobutane-type pyrimidine dimer is the major photoproduct formed 2. A second product, 6-4 photoproduct, is formed in about 10 % of UV i
The two gases making highest relative contribution to the greenhouse gases are: 1. CO2 and CH4 2. CH4 and N2O 3. CFC55 and N2O 4. CO2 and N2O CO2 and CH4
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