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Artículo
Transcription activation by NtcA and 2-oxoglutarate of three genes involved in heterocyst differentiation in the cyanobacterium Anabaena sp. strain PCC 7120
(American Society for Microbiology, 2008)
In Anabaena sp. strain PCC 7120, differentiation of heterocysts takes place in response to the external cue of combined nitrogen deprivation, allowing the organism to fix atmospheric nitrogen in oxic environments. NtcA, a ...
Artículo
Fitting the fracture curve of concrete as a density function pertaining to the generalized extreme value family
(Elsevier, 2017-09)
The load-displacement (P-δ) curve, recorded during the fracture process of concrete in three-point bending tests, is supposed to depict a fracture phenomenon of statistical character that can be suitably described by a ...
Ponencia
Obtaining Homology Groups in Binary 2D Images Using P Systems
(IEEE Computer Society, 2009)
Membrane Computing is a new paradigms inspired from cellular communication. We use in this paper the computational devices called P systems to calculate in a general maximally parallel manner the homology groups of ...
Libro
Actas del Taller de Trabajo Zoco’08 / JISBD Integración de Aplicaciones Web : XIII Jornadas de Ingeniería del Software y Bases de Datos Gijón, 7 al 10 de Octubre de 2008
(SISTEDES: Ingeniería de Software y las Tecnologías de Desarrollo de Software, 2008)
Artículo
Computational efficiency of dissolution rules in membrane systems
(Taylor and Francis, 2006)
Trading (in polynomial time) space for time in the framework of membrane systems is not sufficient to efficiently solve computationally hard problems. On the one hand, an exponential number of objects generated in ...
Ponencia
Test Cases from Functional Requirements Using Model Transformations
(System and Software Technology Group (SYST), 2008)
This abstract describes the experiences and ongoing work applying MDE to the generation of test cases from functional requirements.
Artículo
Variability in prickly sow-thistle (Sonchus asper) from western Mediterranean region
(Universita degli Sudi di Palermo, 2012)
We studied the morphological variability of Sonchus asper (L.) Hill in the western Mediterranean region by means of multivariate analysis. A two-step clustering method indicated that selection of a two-cluster model was ...
Artículo
A validade do(s) Princípio(s) de Frege na análise da linguagem natural
(De Gruyter, 2010)
El denominado Principio de Frege o Principio de Composicionalidad nunca fue definido por el propio Frege, sino que fue propuesto con posterioridad por Rudolf Carnap a partir del análisis del significado que se encuentra ...
Capítulo de Libro
Graphical Modeling of Higher Plants Using P Systems
(Springer, 2006)
L systems have been widely used to model and graphically represent the growth of higher plants [20]. In this paper we continue developing the framework introduced in [21], which make use of the topology of membrane ...
Artículo
Protein Dynamics Control of Electron Transfer in Photosynthetic Reaction Centers from Rps. Sulfoviridis
(American Chemical Society, 2008)
In the cycle of photosynthetic reaction centers, the initially oxidized special pair of bacteriochlorophyll molecules is subsequently reduced by an electron transferred over a chain of four hemes of the complex. Here, we ...