People Who Suffer Depression And Anxiety After A Traumatic Brain Injury May Have Damaged White Matter. Jun 16, 2015 12:00 AM By Ed Cara @EdCara4. Researchers from the University at Pittsburgh Medical Center may have figured out why people suffer depression and anxiety after a concussion.
How to Read Speed Rating, Load Index & Service Descriptions. Using a P195/60R15 87S tire size as our example, the 87S at the end of the size represents the tire's service description. A service description identifies the tire's load index and speed rating.
So an S rating would - on the surface - seem to be adequate for use in the US where there are speed limits everywhere. But, in order to pass an H speed rating, a tire more or less has to have a cap ply. This change has a profound effect on failure rates, way beyond what the increase in speed rating suggests.