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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.
How many chambers do the bird heart and the mammalian heart have? Concerning temperature maintenance what is the advantage of the double and complete circulation of these animals?
Assume that your yard has many tall trees that result in about fifty percent of the yard being shaded and fifty percent of the yard being exposed to full sun. The shaded areas and
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Q. What is a goiter? What is endemic goiter? How this problem is socially solved? Goiter is the abnormal enlargement of the thyroid gland the goiter appears as a tumor in the a
Another possible way to classify organisms would be to separate them into unicellular and multicellular organisms. Explain why this is not a useful classification system. Other
How do organisms adjust to changes in temperature? Some of the most ordinary way for an organism to adjust to changes in body temperature is by perspiration or panting.
Selenium Glutathione peroxidase (GSH-Px) was the first selenium metalloenzyme identified.Glutathione peroxidase catalyzes the reduction of hydrogen peroxide and lipid h yp r o
What is ISQ In resonance frequency analysis implant stability quotient (ISQ) is use to quantify the frequency measurement of implants within a range between 3500 and 8500 HZ. I
WHAT IS THE CLASSIFICATION OF PROTOZOA ..
P o lymerase chain reaction (PCR): The PCR technique enables the exponential amplification of nucleic acid sequences from any biological samples. In the last few ye
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