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.
Speed Rating Z. A âZâ rating can mean different things. While it nearly always means a high performance tire for high-performing sports cars, âZâ may actually appear in the middle of a tireâs size information. When it does, it represents either a maximum speed of more than 149 mph (240 kph) or 186 mph (300 kph).