Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A search for thermosynthesis: starvation survival in thermally cycled
  bacteria   In a pioneering study experimental evidence was sought of thermosynthesis, a
theoretical biological mechanism for free energy gain from thermal cycling that
has been invoked as energy source for the origin of life. A PCR machine applied
thermal cycling to the K12 strain of Escherichia coli. The viability of this
organism during starvation was determined at cyclic and at constant
temperature. The found increase in the viability counts during the first days
of starvation is consistent with thermosynthesis. The scattering in the results
is however large. Further research is needed to proof that the increase is
indeed due to a thermosynthesis process.

1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex