Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ionic channels as electrostatic amplifiers of charge fluctuations   Electrostatic interaction between ions in an ionic channel and the charge
fluctuations in the channel mouth are considered. It is shown that the charge
fluctuations can be enhanced in the channels with low dielectric constant and
result in strong modulation of the potential barrier at the selectivity site.
The effect of charge fluctuational on transition probabilities in other
molecular dynamical systems is briefly discussed.

30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc