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.
In addition to swelling, protein in the urine, and high blood pressure, preeclampsia symptoms can include: 1  Rapid weight gain caused by a significant increase in bodily fluid. 2  Abdominal pain. 3  Severe headaches. 4  Change in reflexes. 5  Reduced urine or no urine output. 6  Dizziness. 7  Excessive vomiting and nausea. 8  Vision changes.