reduction index

reduction index

[ri′dək·shən ‚in‚deks]
(geology)
The rate of wear of a sedimentary particle subject to abrasion, expressed as the difference between the mean weight of the particle before and after transport divided by the product of mean weight before transport and the distance traveled.
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References in periodicals archive ?
The relationship between 10, 20 and 30 m sprint speed and power reduction index were great.
In terms of acoustic performance, the walls and shafts reportedly have to meet a minimum weight sound reduction index of 46 decibels (46RwdB), at heights of up to 5.7m, within tough deflection limits.
To remedy patient and visitor discomfort in that area, the team installed 14-foot-tall insulated panels with a high solar reduction index on the facade.
Synergy and dose reduction index analysis was performed using CompuSyn software version 1.0.
To run a Tobit model we construct a variable "Reduction Index" with the variable "Reduction Ratio" and use it as the dependent variable in the Tobit regression.
Traditional acoustic isolation calculation methods show important deviations for various reasons - for example, the approaches taken to the characteristic parameters of building structures and the influence of the joint compression on the vibration reduction index (Kij), etc.
The cytotoxicity of the photodynamic treatment and [beta]-Lapachone alone or in combination was determined by KFT assay and the combination index (CI)-isobologram method and the dose reduction index (DRI) analysis were used to assess the effect of drug combinations.
Case studies of the river city Sondrio in the Italian Alps highlight the problems analysts face when implementing flood forecast verification methods, damage assessment tools, and a damage reduction index. The opening chapter describes a total warning system that incorporates monitoring and forecasting, potential risk scenarios, preparedness strategies, and communication.
The data presented in this paper are expressed in terms of sound transmission loss, which is equivalent to sound reduction index. Sound transmission loss data are given in the one-third octave bands between 50 Hz and 5000 Hz.
The electric field effectiveness in controlling the frost accumulation is computed measuring the frost mass accumulated on the two extractable plates and calculating the Mass Reduction Index according to the following equation:
The sound reduction index [R.sub.w] under chamber conditions reached 53[+ or -]1 dB, whereas under natural conditions--51[+ or -]1 dB.
Drawing on a Perimeter Reduction Index (PRI) and the GIUR, Law argues for an increase in the frequency of residential moves based on the late Puritjarra sequence.

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