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In continuous wave Doppler, the transducer has two Doppler crystals, one to constantly transmit and one to continuously receive.
As a result of this continuous mode of transmitting and receiving, motion of blood and tissue occurring all along the ultrasound beam will be received, analysed and displayed without an indication of the depth from which each velocity arose. Also, the maximal frequency shift that can be recorded by continuous wave Doppler is not limited by the PRF or the Nyquist phenomenon hence, it is used to detect and record the highest velocity available.
three types of trophic pyramids
Define Rhizoids - Types of Hyphae? Rhizoids - These are brown slender root like structures which arise in cluster from each node of the stolon. These penetrate the substratum
What is the Rh typing of the mother and of the fetus in the hemolytic disease of the newborn? In a hemolytic disease of the newborn the mother is Rh- and the fetus Rh+. In thes
Techniques of Plant Tissue Culture A standard tissue culture laboratory should provide facilities for washing and storage of glass ware, preparation and storage of nutrient
What are the plant tropisms? Tropisms are the movements that caused by external stimulus. In Botany the studied plant tropisms are phototropism (tropism in response to light),
If levels of ATP become high in a cell (i.e more than the cell needs at that time), describe the mechanism that the cell would use to alleviate this situation (include the name of
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Q. How do birds reproduce? Birds like every vertebrate have sexual reproduction. Their embryos develop within shelled eggs containing extraembryonic membranes and exterior the
Kingdom Fungi Fungi was earlier placed with the true plants and are still largely considered so in the domain of botanists yet they are quite different. They are multicellular
Q Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are evolutionarily proximal to nematodes or to annelids? In molluscs there is
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