March 24, 2006 -- A torn ACL in the knee can be replaced -- but it can't be healed.A new technique now shows promise to change this. Doctors long ago gave up trying to repair a torn ACL (anterior cruciate ligament).arch 24, 2006 -- A torn ACL in the knee can be replaced -- but it can't be healed.
In chemistry, pH (/piËËeÉªtÊ/) is a numeric scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the logarithm to base 10 of the molar concentration, measured in units of moles per liter, of hydrogen ions.
The pH level is a measure of acidity or alkalinity, on a scale of zero to fourteen, with zero being most acid, fourteen being most alkaline and seven being mid-range. The most critical pH balance is in the blood. Acidic Alkaline Normal blood pH has a very small window of acid/alkaline pH balance.