| PPO |
Preferred Provider Organization. A group of providers that have banded together in hopes of preserving and enlarging their market share by providing discounted services to groups with which they have contracts. These organizations can be of two types: (a) one is risk-bearing and provides its services in exchange for a pre-set monthly payment; (b) the other is non-risk-bearing and provides discounts off its usual charges.
출처: www.allianceu.com/glossary.htm
|
|---|---|
| ppb |
Parts per billion are used to determine the concentration of a chemical substance in a given volume. First of all, the volume is divided into a billion of equal parts. Each billionth part, that corresponds to the studied substance, is considered as a part per billion (PPB) of the substance. PPB are used to determine very small gas concentrations in the atmosphere.
출처: www.aacog.com/air/Learning/MtoS.htm
|
| ppm |
mg= milligram per liter: Is a unit of measurement of a substance in the water. For example, if you are talking about 8 ppm dissolved oxygen in a lake, that means in one million "drops" or parts of water there are 8 "drops" or parts of oxygen.
출처: www.mlci.org/students/Page.aspx
|
| ppm |
parts per million - A measurement used for nutrients present in very small quantities.
출처: www.noble.org/Ag/FeedLib/Definitions.html
|
| ppt |
parts per thousand - a unit used to indicate salinity
출처: www.nwrc.usgs.gov/fringe/glossary.html
|