Soil Profile â Soil Horizon: O horizon, A Horizon, E horizon, B Horizon, C Horizon or Parent rock, R Horizon or Bedrock. Soil. Soil is the thin top layer on the earthâs crust comprising rock particles mixed with organic matter. Pedology is the study of soils in their natural environment.
GENERIC NAME: tramadol and acetaminophen. BRAND NAME: Ultracet. DRUG CLASS AND MECHANISM: Ultracet is a combination of two drugs, tramadol (Ultram) and acetaminophen (Tylenol) that is used to relieve moderate, acute pain such as pain following dental or surgical procedures. Tramadol and acetaminophen each relieve pain, but they do so by different mechanisms.
Darvocet Â® (propoxyphene/acetaminophen) is a prescription pain medication. It is a narcotic medication and is classified as a controlled substance. In November 2010, the United States Food and Drug Administration (FDA) withdrew all medications that contain propoxyphene from the market.