An ERD (Entity Relationship Diagram) is a graphical representation of the data in rest within a system (e.g. a business, an organization, an application) that is subject to analysis.
The U.S. EPA established the Reference Dose (RfD) Work Group to address these concerns. In preparing this report, the RfD Work Group has drawn on traditional report on risk assessment (NRC, 1983), to more fully articulate the use of noncancer, nonmutagenic experimental data in reaching regulatory decisions about the significance of exposures to chemicals.
RFD-TV is the flagship network for Rural Media Group. Launched in December 2000, RFD-TV is the nationâs first 24-hour television network featuring programming focused on the agribusiness, equine and the rural lifestyle, along with traditional country music and entertainment.