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.
Learn More. Understanding speed classes. The SD card association defines card speeds using two terms: Speed Class and UHS Speed Class. 1  Speed class is the original rating used and the number defines the card speed; 4 for 4MB/s, 6 for 6MB/s.