P. Lakshminarayana, K. Vajravelu, G. Sucharitha and S. Sreenadh
tried to understand the behaviour of peristalsis by considering different fluids and geometries. Elshehawey and Mekhemier [ 3 ] studied the peristaltic flow of couple-stress fluids. Usha and Ramachandra Rao [ 4 ] investigated the impact of the peristalsis on two-layered power-law fluid flows. Misra and Pandey [ 5 ] discussed the peristaltic flow of a non-Newtonian fluid by considering a peripheral layer.
The study of non-Newtonian fluid flow problems with heat transfer has many applications in chemical engineering and related industries; also, due to its tremendous
A. Costamagna, M. Drigo, M. Martini, B. Sona and E. Venturino
. In pregnant sows the infection causes reproductive failure. In vaccinated animals the infection is usually asymptomatic. Lifelong latent infection commonly follows inapparent infection or clinical recovery. Stress may reactivate latent infections, causing recrudescent shedding of ADV. The primary means of transmission of the virus is thought to be by direct contact between infected and susceptible pigs. Indirect contacts by personnel, infected semen, feed, vehicles and equipment can also spread the virus within and among herds. Also long-distance airborne