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- Alfredo Deaño, Amparo Gil, Javier Segura
- Journal of Approximation Theory
- 2004

Inequalities satisfied by the zeros of the solutions of second order hypergeometric equations are derived through a systematic use of Liouville transformations together with the application of classical Sturm theorems. This systematic study allows us to improve previously known inequalities and to extend their range of validity as well as to discover… (More)

- Cristina J Torregrosa-Hetland, José Villanueva, +6 authors Luis M Gutiérrez
- Cellular and molecular neurobiology
- 2010

In chromaffin cells, SNARE proteins, forming the basic exocytotic machinery are present in membrane clusters of 500-600 nm in diameter. These microdomains containing both SNAP-25 and syntaxin-1 are dynamic and the expression of altered forms of SNAREs modifies not only their motion but also the mobility of the associated granules. It is also clear that… (More)

- Amparo Gil, Javier Segura, Nico M. Temme
- Math. Comput.
- 2001

Integral representations are considered of solutions of the inhomo-geneous Airy differential equation w − z w = ±1/π. The solutions of these equations are also known as Scorer functions. Certain functional relations for these functions are used to confine the discussion to one function and to a certain sector in the complex plane. By using steepest descent… (More)

- Amparo Gil, Javier Segura, Nico M. Temme
- ACM Trans. Math. Softw.
- 2002

Two Fortran 77 routines for the evaluation of Airy functions of complex arguments <i>Ai</i>(<i>z</i>), <i>Bi</i>(<i>z</i>) and their first derivatives are presented. The routines are based on the use of Gaussian quadrature, Maclaurin series and asymptotic expansions. Comparison with a previous code by D. E. Amos [1986] is provided.

- Cristina J Torregrosa-Hetland, José Villanueva, +9 authors Luis M Gutiérrez
- Journal of cell science
- 2011

We have studied how the F-actin cytoskeleton is involved in establishing the heterogeneous intracellular Ca(2+) levels ([Ca(2+)](i)) and in the organization of the exocytotic machinery in cultured bovine chromaffin cells. Simultaneous confocal visualization of [Ca(2+)](i) and transmitted light studies of the cytoskeleton showed that, following cell… (More)

- Amparo Gil, Javier Segura, Nico M. Temme
- SIAM J. Scientific Computing
- 2012

Algorithms for the numerical evaluation of the incomplete gamma function ratios P (a, x) = γ(a, x)/Γ(a) and Q(a, x) = Γ(a, x)/Γ(a) are described for positive values of a and x. Also, inversion methods are given for solving the equations P (a, x) = p, Q(a, x) = q, with 0 < p, q < 1. Both the direct computation and the inversion of the incomplete gamma… (More)

- Amparo Gil, Javier Segura, Nico M. Temme
- Numerical Algorithms
- 2002

- Amparo Gil, Javier Segura, Nico M. Temme
- Numerical Algorithms
- 2003

- Ana M Salazar, Jeilyn Vivas, +8 authors Belsy Guerrero
- Toxicon : official journal of the International…
- 2011

The coral snake Micrurus tener tener (Mtt) from the Elapidae family inhabits the southwestern United States and produces severe cases of envenomations. Although the majority of Mtt venom components are neurotoxins and phospholipase A₂s, this study demonstrated, by SDS-PAGE and molecular exclusion chromatography (MEC), that these venoms also contain… (More)