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.
1. REFERENCE DOSE (RfD): DESCRIPTION AND USE IN HEALTH RISK ASSESSMENTS. 1.1. INTRODUCTION. This concept paper describes the U.S. Environmental Protection Agency's (U.S. EPA) principal approach to and rationale for assessing risk for health effects other than cancer and gene mutations from chronic chemical exposure.
From Wikipedia, the free encyclopedia. RFQ is the initialism for a number of things: 1  Radio Frequency Quadrupole, a particular setup of electrodes used as a mass analyzer or an element of a linear accelerator.  Regulatory Focus Questionnaire, a questionnaire designed to measure prevention focus and promotion focus.