Explain what would happen if this limit is exceeded

It is known that the strength of metals depends on their grain size. Would you then expect

 

strength to influence the R value of sheet metals? Explain. It seen from the Hall-Petch Eq. (3.8) on p. 92 that the smaller the grain size, the higher the yield strength of the metal. Since grain size also influences the R values, we should expect that there is a relationship between strength and R

values.

2.Equation (7.23) gives a general rule for dimensional relationships for successful drawing without a blankholder. Explain what would happen if this limit is exceeded. If this limit is exceeded, the blank will begin to wrinkle and we will produce a cup that has wrinkled walls.

find the cost of your paper

Explain why attenuation is not a big problem in PET.

Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….

Give the mean and the variance of the reconstructed image, mean[ˆ f(x, y)] and var[ˆ f(x, y)].

Ignoring the inverse square law and attenuation, an approximate reconstruction for SPECT imaging is given by where c˜() =  {||W()} and W() is a rectangular windowing filter that cuts off at = 0…..

Find the numerical responses in each to an event in crystal C(4, 6).

Suppose a PET detector comprises four square PMTs (arranged as a 2 by 2 matrix) and a single BGO crystal with slits made in such a way that it is….