Cation Exchange Capacity. the capacity of a soil to adsorb cations; cations are adsorbed at exchange sites, and can be released in exchange for other cations.
see Cation Exchange Capacity.
Commodities Exchange Center. In New York, the location of five futures exchanges: the COMEX, the Coffee, Sugar and Cocoa Exchange (CSC), the New York Mercantile Exchange (NYMEX), the New York Cotton Exchange, and the New York Futures Exchange.
Cation Exchange Capacity. The capacity of a soil to exchange and retain positively charged ions (cations) expressed in terms of milliequivalents per 100 grams of soil (me/100 g).
cation exchange capacity. The ability of a soil's colloids to attract and hold onto its cations. Soils high in humus and expanding clays tend to have the highest CECs.
Cation Exchange Capacity. Represents the total quantity of negative charge that is available in the soil to attract positively charged ions in the soil solution.
Cation Exchange Capacity. the total quantity of cations that a soil can adsorb by cation exchange, usually expressed as milliequivalents per 100 grams of soil. Measured values of cation exchange capacity depend somewhat on the method used for the determination.
Commodity Exchange Center. The location of five New York futures exchanges: Commodity Exchange, Inc. (COMEX), the New York Mercantile Exchange (NYMEX), the New York Cotton Exchange, the Coffee, Sugar and Cocoa Exchange (CSC), and the New York Futures Exchange (NYFE).
Is the measure of the capacity of a soil to hold the major cations: calcium, magnesium, sodium and potassium (including hydrogen, aluminium and manganese in acid soils). It is a measure of the potential nutrient reserve in the soil and is therefore an indicator of inherent soil fertility. An imbalance in the ratio of cations can result in soil structural problems. High levels of individual cations (e.g. aluminium and manganese) can also be toxic to plants.
Cation Exchange Capacity. The sum of exchangeable bases plus total soil acidity at a specific pH, values, usually 7.0 or 8.0. It is usually expressed in centimoles of charge per kilogram of exchanger (cmolckg-1) or millimoles of charge per kilogram of exchanger.
Cation Exchange Capacity. The amount of cations (Al, H, Ca, Mg, and K) the soil is capable of retaining.
An abbreviation of Cation Exchange Capacity.
1) Cation exchange capacity 2) Continuing Education Center (UPLB, Philippines)
Connection Entry Capacity. (a) In the case of a Generating Unit other than that forming part of a CCGT Module, the maximum sent out active power of a Generating Unit as declared by the Generator. This maximum active power is net of the MW consumed by the Generating Unit through the Generating Unit's Unit Transformer when producing the same.(b) In the case of a CCGT Module, the maximum sent out active power of a CCGT Module as declared by the Generator, being the active power declared by the Generator as being deliverable by the CCGT Module at the Grid Entry Point (or in the case of an Embedded CCGT Module, at the User System Entry Point), expressed in whole MW).(c) In the case of a Power Station, the maximum amount of active power deliverable by the Power Station at the Grid Entry Point (or in the case of an Embedded Power Station at the User System Entry Point), as declared by the Generator, expressed in whole MW. The maximum active power deliverable is the maximum amount deliverable simultaneously by the Generating Units and/or CCGT Modules less the MW consumed by the Generating Units and/or CCGT Modules in producing that active power.
Cation Exchange Capacity. Sum of exchangeable cations a soil can adsorb at a specific pH – influences nutrient availability to plants. or The amount of negative charge that exists on humus and clays allowing them to adsorb cations.
A measurement of a soil’s ability to bind positively charged ions (cations), which include many important nutrients. Depends on the amount and type of clay and the amount and humification of organic matter in soil. Most of the major cation nutrients are held in soil by CEC (calcium, magnesium, potassium).
cation exchange capacity. The capacity of soil to hold nutrients for plant use. Specifically, CEC is the amount of negative charges available on clay and humus to hold positively charged ions. Effective cation exchange capacity (ECEC) is reported for acid soils (pH5). Expressed as centimoles of charge per kilogram of soil (cmolc/kg).
Cation Exchange Capacity. The surfaces of clay minerals and organic matter have negative electrical charges that attract positively charged elements or molecules (cations), which are exchangeable with other cations in the soil solution. The net negative charge of a given weight of soil is equivalent to the cation exchange capacity. CEC is especially important for the essential plant nutrients potassium, calcium, and magnesium. When held in exchangeable form on particle surfaces, these nutrients are protected from leaching and are a reserve nutrient supply that can replenish ions taken up by plant roots. Another important function of CEC is the exchange of hydrogen and aluminum cations between particle surfaces and the soil solution, which helps buffer soil pH (i.e., pH remains more stable because of the ability to exchange acidic cations).