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.
Preeclampsia is new high blood pressure after 20 weeks of pregnancy. It usually goes away after you give birth. Not all high blood pressure is preeclampsia. In some women, blood pressure goes up very high in the second or third trimester. This is sometimes called gestational hypertension, and it can lead to preeclampsia. Preeclampsia can be dangerous for the mother and baby. It can keep the baby from getting enough blood and oxygen.