Em O Ódio (1995), Mathieu Kassovitz traça um retrato de um subúrbio parisiense em “estado de sítio”. Fá-lo com recurso a um guião sólido e uma componente narrativa elaborada mas, porventura, o que mais salta à vista é um filme / uma história muito forte que, em conjunto com uma estética peculiar, faz com que, ao falar do filme, recordemos imagens / planos específicos. Pedindo à sociologia bases para um enquadra...
A intensificação das práticas agrícolas com recurso, na maioria das vezes, a aplicações de pesticidas e a mobilizações e fertilizações frequentes do solo, têm como consequência a degradação dos recursos naturais e a perda de biodiversidade nos agroecossistemas. Por outro lado, os efeitos destas práticas têm sido estudados nas últimas décadas e, devido aos seus impactes negativos, os agricultores têm sido encora...
Double cantilever beam (DCB) tests are common experiments in the field of adhesive fracture mechanics. During such an experiment, both the load and the crack length have to be monitored. Digital image processing techniques offer interesting possibilities in various fields of science. Automated analyses may significantly reduce the necessary manpower for certain cumbersome tasks. The analysis of large series of ...
The dynamics of diffusive and stress-induced transport in polymeric delivery systems was investigated. Partial and ordinary differential equations were first written to describe drug release behaviors in Maxwell and Maxwell-Voigt materials. The time constants governing the flux and concentration responses of a permeating species were determined from a Laplace transform solution of the original model. A ”trackin...
Mathematical models to describe drug concentration profiles of topically administered drug in the anterior chamber aqueous humor have been proposed by several authors. The aim of this paper is to present a mathematical model to predict the drug concentration in the anterior chamber when a therapeutical contact lens with the drug is entrapped in nanoparticles is used.
This paper focuses on ophthalmic drug release from a loaded copolymer: the drug is dispersed in the polymeric matrix and entrapped in particles. The copolymer is based in 2-hydroxyethyl methacrylate co-methacrylic acid and silicone is used to prepare the loaded particles. A mathematical model to simulate the drug release is proposed and a qualitative analysis is performed. Experimental results are compared with...
In this paper we consider nonlinear delay diffusion-reaction equations with initial and Dirichlet boundary conditions. The behavior and the stability of the solution of such initial boundary value problems (IBVPs) are studied using energy method. Simple numerical methods are considered on the computation of numerical approximations to the solution of the nonlinear IBVPs. Using the discrete energy method we stud...
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