39 research outputs found
Dynamical effects induced by long range activation in a nonequilibrium reaction-diffusion system
We both show experimentally and numerically that the time scales separation
introduced by long range activation can induce oscillations and excitability in
nonequilibrium reaction-diffusion systems that would otherwise only exhibit
bistability. Namely, we show that the Chlorite-Tetrathionate reaction, where
autocatalytic species diffuses faster than the substrates, the spatial
bistability domain in the nonequilibrium phase diagram is extended with
oscillatory and excitability domains. A simple model and a more realistic model
qualitatively account for the observed behavior. The latter model provides
quantitative agreement with the experiments.Comment: 19 pages + 9 figure
Comprehensive deep learning-based framework for automatic organs-at-risk segmentation in head-and-neck and pelvis for MR-guided radiation therapy planning
Propagation of Blood Clotting in the Complex Biochemical Network of Hemostasis Is Described by a Simple Mechanism
Diversity in the dynamical behaviour of a compartmentalized programmable biochemical oscillator
Verrucous Carcinoma of the Nasal Septum and Columella
Tumours of the nasal septum are rare. They mostly concern squamous cell carcinomas. Verrucous carcinomas are exceptional, with only three well-documented cases in the literature. We operated such a tumour, localized both on the columella and nasal septum.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Pilomatrix carcinoma.
A 43-year-old man presented with a tumour of the medial part of the right eyebrow. A biopsy was performed and histological examination revealed a malignant transformation of a 'calcifying epithelioma of Malherbe'. A secondary wide excision was performed. Clinical and pathological findings of this extremely rare tumour are reviewed. Factors influencing the prognosis are proposed, based on a compilation of the literature.Case ReportsJournal ArticleSCOPUS: ar.jinfo:eu-repo/semantics/publishe