Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ThermInfo: Collecting, Retrieving, and Estimating Reliable
  Thermochemical Data   Standard enthalpies of formation are used for assessing the efficiency and
safety of chemical processes in the chemical industry. However, the number of
compounds for which the enthalpies of formation are available is many orders of
magnitude smaller than the number of known compounds. Thermochemical data
prediction methods are therefore clearly needed. Several commercial and free
chemical databases are currently available, the NIST WebBook being the most
used free source. To overcome this problem a cheminformatics system was
designed and built with two main objectives in mind: collecting and retrieving
critically evaluated thermochemical values, and estimating new data. In its
present version, by using cheminformatics techniques, ThermInfo allows the
retrieval of the value of a thermochemical property, such as a gas-phase
standard enthalpy of formation, by inputting, for example, the molecular
structure or the name of a compound. The same inputs can also be used to
estimate data (presently restricted to non-polycyclic hydrocarbons) by using
the Extended Laidler Bond Additivity (ELBA) method. The information system is
publicly available at http://www.therminfo.com or
http://therminfo.lasige.di.fc.ul.pt. ThermInfo's strength lies in the data
quality, availability (free access), search capabilities, and, in particular,
prediction ability, based on a user-friendly interface that accepts inputs in
several formats.

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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph