CHÁVEZ DE DIEGO , María José

Genome expression involves the synthesis of messenger RNA (mRNA), a short lived molecule whose translation directs the synthesis of cellular proteins and that is subject to degradation after the translation process. Up to the date, mRNA synthesis and degradation has been considered as a linear phenomenon in which the above steps occur...

"El lenguaje de la topología general permite formular precisa y concisamente numerosos problemas bajo un punto de vista común. Sin embargo el nivel de abstración y generalidad inherente al concepto de espacio topológico hace que desde el punto de vista de las aplicaciones, se consideren objetos más sencillos. Esto ya era bien conocido por los...

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Con objeto de validar un sistema experto en conservación preventiva de patrimonio arquitectónico a través de modelos virtuales, se ha obtenido información cuantitativa en el tiempo, de quince parroquias situados en el occidente andaluz. Esta información se ha tratado como series históricas sobre variables de vulnerabilidad y de...

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We extend Lawrencenko and Negami's results in [4, 5] by establishing lower and upper bounds for the number of irreducible triangulations of the punctured torus and the punctured Klein bottle.

This work focuses on the visibility of exterior of a polygon. We show a lower bound for the Fortress Problem applied to polygons P having n vertices in terms of the number of reflex vertices, the number of convex vertices and the number of pockets that are found when the convex hull is made on P. The results are related to the task of the...

Co-transcriptional imprinting of mRNA by Rpb4 and Rpb7 subunits of RNA polymerase II (RNAPII) and by the Ccr4–Not complex conditions its posttranscriptional fate. In turn, mRNA degradation factors like Xrn1 are able to influence RNAPII-dependent transcription, making a feedback loop that contributes to mRNA homeostasis. In this work, we have...

We extend a theorem of S. Claytor in order to characterize the Peano generalized continua which are embeddable into the 2-sphere. We also give a characterization of the Peano generalized continua which admit closed embeddings in the Euclidean plane.

S. Mazurkiewicz remarked after his proof of the celebrated HahnMazurkiewicz Theorem ([5]) that any generalized Peano continuum is the continuous image of the half-line 0; 1 but the converse does not hold. Therefore continuous images of 0; 1 do not characterize generalized Peano continua. In this paper we use perfect maps and trees to...