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- José Remohí, G Ardiles, Juan Antonio García-Velasco, Patricia Gaitan, Carlos Simón, Antonio Pellicer
- Human reproduction
- 1997

Adequate endometrial preparation with exogenous steroids is mandatory for successful ovum donation. This study was undertaken to assess the value of endometrial thickness by ultrasound and serum oestradiol as predictors of ovum donation outcome and to analyse the correlation between serum oestradiol concentrations and the endometrial thickness. Endometrial… (More)

- Yolanda Mínguez, Carmen Pérez Rubio, +4 authors Antonio Pellicer
- Human reproduction
- 1997

To assess the impact of endometriosis on intracytoplasmic sperm injection (ICSI) outcome, we have retrospectively evaluated 980 ICSI cycles, comparing the results of women with and without endometriosis. A total of 101 cycles was identified in which various degrees of endometriosis were involved, and in the remaining 879 cycles, male infertility was the… (More)

- Antonio Pellicer, Patricia Gaitan, +4 authors Carlos Simón
- Journal of reproductive immunology
- 1998

The management of low responders (LR) to ovarian stimulation in cycles of assisted reproduction (AR) is a difficult challenge. Aging of the ovary and LR are coincidental in many situations, but LR is also present in young patients undergoing AR. In fact, today it is a recognized cause of infertility. When the aged ovary is considered, there is evidence that… (More)

- Assia Benabdallah, Patricia Gaitan, Jérôme Le Rousseau
- SIAM J. Control and Optimization
- 2007

We consider the heat equation with a discontinuous diffusion coefficient and give uniqueness and stability results for both the diffusion coefficient and the initial condition from a measurement of the solution on an arbitrary part of the boundary and at some arbitrary positive time. The key ingredient is the derivation of a Carleman-type estimate. The… (More)

- Michel Cristofol, Patricia Gaitan, Hichem Ramoul
- 2006

For a two by two reaction-diffusion system on a bounded domain we give a simultaneous stability result for one coefficient and for the initial conditions. The key ingredient is a global Carleman-type estimate with a single observation acting on a subdomain.

We consider a 2×2 system of parabolic equations with first and zeroth coupling and establish a Carleman estimate by extra data of only one component without data of initial values. Then we apply the Carleman estimate to inverse problems of determining some or all of the coefficients by observations in an arbitrary subdomain over a time interval of only one… (More)

where c(x, y) ∈ C(Ω) and c(x, y) ≥ cmin > 0. Moreover, we assume that c and all its derivatives up to order three are bounded. If we assume that q0 belongs to H (Ω) and b is sufficiently regular (e.g. b ∈ H(0, T, H 9 2 (∂Ω)) ∩ H(0, T,H 5 2 (∂Ω)) and some additional conditions), then (1.1) admits a solution in H(0, T,H 3 2 (Ω)). We will use this regularity… (More)

Article history: Received 18 June 2009 Accepted after revision 2 November 2009 Presented by Gilles Lebeau In this Note, we present Carleman estimates for linear reaction–diffusion–convection systems of two equations and linear reaction–diffusion systems of three equations. These estimates are the key for proving controllability results for semilinear… (More)

We study the inverse problem of the simultaneous identification of two discontinuous diffusion coefficients for a one-dimensional coupled parabolic system with the observation of only one component. The stability result for the diffusion coefficients is obtained by a Carleman-type estimate. Results from numerical experiments in the one-dimensional case are… (More)

This article is devoted to prove a stability result for two independent coefficients for a Schrödinger operator in an unbounded strip. The result is obtained with only one observation on an unbounded subset of the boundary and the data of the solution at a fixed time on the whole domain.