Oceanic lithosphere is continuously formed at a constant rate at the mid-ocean ridges 1 0 = 0. Thus at x = 0 the temperature is the Heaviside step function. Finally, we assume the system is at a quasi-steady state, so that the temperature distribution is constant in time, i.e. T=T(x,z).
Because preeclampsia can prevent proper blood flow to the placenta, babies may be born prematurely and can suffer from later conditions such as learning disabilities, epilepsy and hearing and vision problems.
1 Eclampsia is the development of seizures in a woman with severe preeclampsia. It has a 2% mortality (death) rate. 2  There is no cure for preeclampsia beside delivery of the baby.  Women with mild preeclampsia may be monitored closely to allow the baby to mature.