1 Use a small screwdriver to press the spline into the corners as necessary. 2  As you press the spline into the frame it will make the screen taught. 3  Once installed, trim the excess screen material with scissors or a utility knife.
In normal pregnancy the mean fetal haemoglobin increases linearly from 11 g/dl at 17 weeks' gestation to 15 g/dl at 40 weeks' gestation and one standard deviation is approximately 1 g/dl. The haemoglobin was also measured in fetal blood from 154 red cell isoimmunised pregnancies from 17 to 36 weeks' gestation.
Quick Answer. Mayo Clinic states that normal hemoglobin levels for adult males are between 13.5 and 17.5 grams per deciliter of blood, and normal female levels are 12.0 to 15.5 grams per deciliter of blood. Normal levels for children vary by age and gender.