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.
Some studies suggest that taking vitamin E along with vitamin C may help prevent pre-eclampsia in women who are at high risk. Women with pre-eclampsia have high blood pressure and too much protein in the urine. Pre-eclampsia is a common cause of premature births.itamin E also does not seem to protect against colorectal cancer in women or people with diabetes. There is some evidence that taking vitamin E along with vitamin A and vitamin C or as part of a multivitamin may offer some protection to people who had colorectal adenomas.