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 doesn't always cause noticeable symptoms, especially in the early stages, and symptoms can also vary from woman to woman. Some symptoms of preeclampsia, such as swelling, nausea, and weight gain, may seem like normal pregnancy complaints, so it's important to be aware of any potential warning signs.