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.
Just in case anybody reading this doesn't know, pre-eclampsia is a condition where pregnancy causes high blood pressure. The main symptom of it is swelling in hands, feet and face. I had it all through out my pregnancy and the knuckle pain and swelling was one of the worst to deal with.