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CES (technology Show), CES
CES may stand for: *Closed ecological system, isolated from the outside *Climate_change_policy_of_the_United_States#Clean_Energy_Standards, Clean Energy Standards *Constant elasticity of substitution, in economics, a feature of a particular class of production function *The ISO 639 code for the Czech language *CES (trade show), CES, annual technology trade show in Las Vegas produced by the Consumer Technology Association Technology *Circuit Emulation Service, a telecommunication technology *Cryogenic energy storage *Character encoding scheme, a reversible transformation of sequences of code units to sequences of bytes *Charge-exchange spectroscopy, a diagnostic used in plasma physics Companies * ICAO Code designator for China Eastern Airlines Medicine *Cauda equina syndrome, a serious neurological condition *Cranial electrotherapy stimulation, therapeutic brain stimulation *Camurati-Engelmann disease, also called "Camurati Engelmann syndrome" (CES) *Carboxylesterase, an enzyme th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Closed Ecological System
Closed ecological systems or contained ecological systems (CES) are ecosystems that do not rely on matter exchange with any part outside the system. The term is most often used to describe small, man-made ecosystems. Such systems can potentially serve as a life-support system or space habitats. In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces, and urine must eventually be converted into oxygen, food, and water. A closed ecological system must contain at least one autotrophic organism. While both chemotrophic and phototrophic organisms are plausible, almost all closed ecological systems to date are based on an autotroph such as green algae. Examples A closed ecological system for an entire planet is called an ecosphere. Man-made closed ecological systems which were created to sustain human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |