# rate

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## rate

1.
a. a price or charge with reference to a standard or scale
b. (as modifier): a rate card
2. a charge made per unit for a commodity, service, etc.
3. a wage calculated against a unit of time

## rate

[rāt]
(science and technology)
The amount of change of some quantity during a time interval divided by the length of the time interval.
References in periodicals archive ?
A = Cross section area in the header ([m.sup.2]) G = Mass flux (kg m-2-[s.sup.-1]) D = Internal diameter of the header (m) LF = Liquid fraction (-) m = Mass flow rate (g s1) n = number of the outlet tubes (-) OCR = Oil circulation rate Q = Power of heaters (kW)/ Capacity (W) x = Quality (-) [DELTA]P = Pressure drop (kPa) [alpha] = Capacity degradation Subscripts ave = Average pressure i = Index number ihd = Inlet header l = Liquid M = Main pipe (header) ohd = Outlet header oil = Oil ref = Refrigerant tub = Tube v = vapor REFERENCES
Summary: Response surface methodology (RSM) has been used to optimize the effect of circulation rates, ozone supply, cephalexin (CEX) concentration, and granular activated carbon (GAC) dose on removal of COD from solution.
In the Eighteenth Central Committee all but ninety-one members were replaced, increasing the circulation rate slightly from the Seventeenth Central Committee's 54.9 percent to 55.6 percent today.
For the cooling experiment, the groundwater circulation rate was about 33 L/min, and the heat-source water circulation rate was about 70 L/min.
The library's fiscal year 2010 budget is around \$4.3 million, with the addition of some PILOT money from Worcester Polytechnic Institute, down about 10 percent from \$4.8 million in fiscal year 2009.The economy can make things difficult for funding, but it helps that the library's circulation rate is healthy.
He was Worldwide Circulation Director of Life Magazine and in 1957 he founded Life Circulation Corporation, a wholly owned subsidiary of Time, charged with maintaining an 8-million circulation rate base for Life Magazine.
The input data used for the IADC-Neural Network design were consisted of bit size, total nozzle area of the bit, depth when the bit was pulled, drilled interval length, rate of penetration, maximum and minimum weight on bit (WOB) and rotary speed (RPM), and the mud circulation rate; while the target was the bit type (IADC code).
The superficial gas velocity, [U.sub.g], ranges from 3.5 to 8 m/s and solids circulation rate, [G.sub.s], ranges from 50 to 200 kg/([m.sup.2] s).
Third, we have been able to increase our circulation rate base for the first time in more than 45 years.
Seven operating factors under investigations included bed temperature, excess air factor, particle size, secondary air ratio, Ca/S ratio, circulation rate, and bed material height.
Reactor performance was assessed for the condition without liquid circulation as well as at a superficial circulation rate of 0.19cm/s.
The researchers hypothesize that elevated Caribbean salinity, which is transported via the Gulf Stream to the North Atlantic, amplifies the heat transport system by increasing the deep-ocean circulation rate. When the North Atlantic Ocean cools, the Caribbean's salinity begins building up because the deep ocean circulation drops to a fraction of its previous rate and the Gulf Stream no longer transports salty water away.

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