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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.
Typical Form or Reparative Regeneration - Heteromorphosis Sometimes the part which grows back is not the same as that which was lost. The phenomenon is called Heteromorphosis.
Liverworts and mosses are characterized by their lack of vascular conducting tissue. These two groups of liverwort, plants and mosses, are known by which of the below terms: a)
Occurrence of vitamin B 12 Vitamin B 12 is one of the cobalamin, a group of active principles widely occurring in nature. Vitamin B 12 is present especially in liver, kidney
Penetrating Injury Open pneumothorax (sucking chest wound) Hemothorax Tracheobrochiaf injury Pulmonary contusion Mediastinal injury
Q. Drugs and Insulin used in diabetes? When diet, exercise or even weight reduction do not improve the diabetic symptoms and blood sugar levels, the uses of hypoglycemia drugs
Which of the two forms of respiration (aerobic and anaerobic) gives more energy from a given quantity of food? Aerobic respiration gives more energy than anaerobic respiration
Q. What is the water cycle? The water cycle represents the recycling and circulation of water in nature. The Liquid water on the planet surface is heated by the sun and turns i
Q. What is Glycosylated Haemoglsbin? Glycosylated haemoglobin values give important diagnostic inferences regarding the recent past of a diabetic i.e. how well he/she managed t
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what''s the define of mitochodria
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