: Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
Traumatic Brain Injury (TBI) - Levels of Severity. Mild TBI. Loss of consciousness is very brief, usually a few seconds or minutes. Loss of consciousness does not have to occur - the person may be dazed or confused. Testing and scans of the brain may appear normal. Most common: 75%-85% of all brain injuries are mild.
There is much that remains unknown about assessment and management of severe brain injury. This brief primer will attempt to examine a few critical topics as related to the terminology, evaluation and management in persons of low level neurological states (LLNSs) following acquired brain injury and in particular traumatic brain injury (TBI). Coma is a state of unarousable, unresponsiveness.