As opposed to abstracts, which is what you usually see on websites.
181,000 refs for "full-text articles."

As for "memorias," I'm assuming that they are making a distinction between journal articles and articles that appear in the proceedings of seminars, conferences, congresses, etc.

Examples of equivalence of "memorias" and 'proceedings':

ED461383 - Transborder Library Forum Proceedings = Memorias del Foro Binacional de Bibliotecas (1st, Nogales, Arizona, February 1-2, 1991).
www.eric.ed.gov/ERICWebPortal/recordDetail?accno...

Proceedings : memorias del Tercer Congreso Panamericano de Mecánica de Suelos e Ingeniería de Fundaciones. by Panamerican Conference on Soil Mechanics and ...
udm.dalnet.lib.mi.us/.../ipac.jsp?...Proceedings...memorias...

Memórias do Instituto Oswaldo Cruz - Proceedings of the ...
Thus, the proceedings of schistosome genome project promises not only the generation of a high-resolution map of the schistosome genome within a few years, ...
www.scielo.br/scielo.php?script=sci_arttext&pid=S0074...

Proceedings/Memoria of a Bi-National Conference
this Synthesis/Memoria). The group's analysis was undertaken to a common methodology ..... improvements automatically without foreclosure proceedings. ...
lanic.utexas.edu/project/etext/llilas/cpa/mexcenter/colonias.pdf

Supplement ... PROCEEDINGS / MEMORIAS 18th International Symposium on Sea Turtle Biology and ...
lists.ufl.edu/cgi-bin/wa?A2=ind9910&L=CTURTLE&P...

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Note added at 23 mins (2009-11-30 00:58:50 GMT)
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Sorry, one of my examples is from Portuguese. My mistake.