Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Agriculture | See biochemical oxygen demand. (references) |
Environment | An indirect measure of the concentration of biologically degradable material present in organic wastes. It usually reflects the amount of oxygen consumed in five days by biological processes breaking down organic waste. (BOD). (references) |
Weather | Amount of dissolved oxygen needed by aerobic decomposers to break down the organic materials in a given volume of water at a certain temperature over a specified time period. See BOD5. (references) |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
The BOD in England is carried out by taking two freshwater samples, testing for dissolved oxygen in one sample, then sealing the other sample (to prevent further oxygen dissolving in),and placing it in the dark (to prevent photosynthesis adding oxygen). This second sample is kept at room temperature and tested for dissolved oxygen after five days. The ratio of the dissolved oxygen in both samples is the BOD(five). Five days is chosen because this is the longest time that river water takes to travel from source to estuary in the UK.
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Biological Oxygen Demand."
Crosswords: BIOLOGICAL OXYGEN DEMAND |
| Specialty definitions using "BIOLOGICAL OXYGEN DEMAND": BOD5 ♦ Dissolved oxygen. (references) |
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
biological oxygen demand | 26 |
| Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)42 49 4F 4C 4F 47 49 43 41 4C 4F 58 59 47 45 4E 44 45 4D 41 4E 44 |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01000010 01001001 01001111 01001100 01001111 01000111 01001001 01000011 01000001 01001100 00100000 01001111 01011000 01011001 01000111 01000101 01001110 00100000 01000100 01000101 01001101 01000001 01001110 01000100 |
HTML Code (1990) (references)B I O L O G I C A L   O X Y G E N   D E M A N D |
ISO 10646 (1991-1993) (references)0042 0049 004F 004C 004F 0047 0049 0043 0041 004C 004F 0058 0059 0047 0045 004E 0044 0045 004D 0041 004E 0044 |
Encryption (beginner's substitution cypher): (references)3643494649414337354624958594139482383947354838 |
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Copyright © Philip M. Parker, INSEAD. Terms of Use.
