Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Respiratory Particle Deposition Probability due to Sedimentation with
  Variable Gravity and Electrostatic Forces   In this paper, we study the effects of the acceleration gravity on the
sedimentation deposition probability, as well as the aerosol deposition rate on
the surface of the Earth and Mars, but also aboard a spacecraft in orbit around
Earth and Mars as well for particles with density rho_p = 1300 kg/m^3,
diameters d_p = 1, 3, 5 micrometers and residence times t = 0.0272, 0.2 s
respectively. For particles of diameter 1 micrometer we find that, on the
surface of Earth and Mars the deposition probabilities are higher at the poles
when compared to the ones at the equator. Similarly, on the surface of the
Earth we find that the deposition probabilities exhibit 0.5% and 0.4% higher
percentage difference at the poles when compared to that of the equator, for
the corresponding residence times. Moreover in orbit equatorial orbits result
to higher deposition probabilities when compared to polar ones. For both
residence times particles with the diameters considered above in circular and
elliptical orbits around Mars, the deposition probabilities appear to be the
same for all orbital inclinations. Sedimentation probability increases
drastically with particle diameter and orbital eccentricity of the orbiting
spacecraft. Finally, as an alternative framework for the study of interaction
and the effect of gravity in biology, and in particular gravity and the
respiratory system we introduce is the term information in a way Shannon has
introduced it, considering the sedimentation probability as a random variable.
This can be thought as a way in which gravity enters the cognitive processes of
the system (processing of information) in the cybernetic sense.

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The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
2
The categories of this paper are: math
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The categories of this paper are: patt-sol