absorption factor

[əb′sȯrp·shən ‚fak·tər]

(acoustics)

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Absorption Factor

(or absorptance), the dimensionless ratio of the radiation flux absorbed by a body to the flux incident on it. In contrast to the absorptivity and absorption coefficient, the absorption factor pertains to radiation of all frequencies and all orientations that is present in the irradiating flux. The factor is dependent on the properties of the body, the state of the body’s surface, the spectral composition of the flux, and the flux’s direction.

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References in periodicals archive

For [[gamma].sub.s] [approximately equal to] [[gamma].sub.m] ([[gamma].sub.s] = -10.0, [[gamma].sub.m] = -9.0), the staggered dispersion factor presents a single- plateau structure which is in the same location as the corresponding maximum for the staggered absorption factor, shown in Figure 2(a).

The staggered absorption factor approaches zero with increasing frequency in the high-frequency regime and its zero frequency limit converges to [mathematical expression not reproducible] which diverges as [mathematical expression not reproducible].

Caption: Figure 2: Double logarithmic plots of (a) the staggered magnetic absorption factor ([X".sub.s]) and (b) the staggered dispersion factor [X'.sub.s] versus frequency of the staggered magnetic field for two different sets of Onsager's rate coefficients (red lines for [[gamma].sub.s] = -10.0, [[gamma].sub.m] = - 0.01, and [gamma] = -0.001; black lines for [[gamma].sub.s] = -10.0, [[gamma].sub.m] = - 9.0, and [gamma] = -0.001) in the ferromagnetic phase.

Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model

[27] also recently reported brain absorption factors for single doses of [sup.26]Al administered orally to eight mature rats after a 30-h fast.

Gastrointestinal absorption, tissue retention, and urinary excretion of dietary aluminum in rats determined by using [sup.26]Al

Correcting the spectra for non-uniform f([chi]) absorption correction factor within the FeL[alpha] emission bands leads to an improvement of the quantitative re sults compared with those derived from the conventional approach where only the absorption factor associated with the maximum emission of the analyzed x-ray emission is applied.

Decomposition of wavelength dispersive X-Ray spectra

Similarity sadeghi, 1388 safabakhsh (2009), rahnavard (2007) and encouragement tools among the volunteer absorption factors has a first priority.

Recognition of ways of absorption and maintenance volunteer human resources in NGOs case study: red crescent society of Mazandaran province

We believe that in this case the triad of medications (chlorpromazine and lindane), HIV infection, and percutaneous absorption factors (epidermal barrier dysfunction, skin hydration, and occlusion) were sufficient in combination to reduce the patient's seizure threshold so that a single application of lindane induced a seizure.

Neurotoxic reaction to lindane in an HIV-seropositive patient: an old medication's new problem