celss การใช้

• Such systems are often termed Closed Ecological Life Support Systems ( CELSS ).
• In recent decades, NASA has done extensive hydroponic research for its Controlled Ecological Life Support System ( CELSS ).
• CELSS studied means of breaking down human wastes and, if possible, integrating the processed products back into the ecology.
• The mission's ecological system was to be a testbed for the controlled ecological life support system ( CELSS ) for the permanent Chinese space station of the China Manned Space Engineering Office ( CSME ).
• In the late 1980s and early 90s, both NASA ( CELSS ) and the European Space Agency ( MELiSSA ) proposed spirulina as one of the primary foods to be cultivated during long-term space missions.
• In CELSS, air is initially supplied by external supply, but is maintained by the use of foliage plants, which create oxygen in photosynthesis ( aided by the waste-byproduct of human respiration, CO 2 ).
• Eventually, the main goal of a CELSS environment is to have foliage plants take over the complete and total production of oxygen needs; this would make the system a " closed ", instead of " controlled ", system.