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.
When swelling can be serious. You should seek medical attention immediately if your face, feet or hands swell up suddenly. A pregnancy condition called pre-eclampsia can cause sudden swelling, although most women with swelling don't have pre-ecplampsia. If it happens to you, contact your midwife, doctor or hospital immediately. If you do have pre-eclampsia, you'll need to be monitored carefully, as the condition can be serious for both you and your baby. Other signs of pre-eclampsia can include: severe headache.