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.
Unless you have chronic high blood pressure, your blood pressure should return to normal in a few days or weeks. In severe cases, this can take 6 or more weeks. After having preeclampsia, you have a higher-than-average risk of heart disease, stroke, and kidney disease.