Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal effects on nonlinear acceleration waves in the Biot theory of
  porous media   We generalize a theory of Biot for a porous solid based on nonlinear
elasticity theory to incorporate temperature effects. Acceleration waves are
studied in detail in the fully nonlinear theory. The wavespeeds are found
explicitly and the amplitudes are then determined. The possibility of shock
formation is discussed.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat