RESUMO
A laser-induced breakdown spectroscopy technique for analyzing biological matter for the detection of biological hazards is investigated. Eight species were considered in our experiment: six bacteria and two pollens in pellet form. The experimental setup is described, then a cumulative intensity ratio is proposed as a quantitative criterion because of its linearity and reproducibility. Time-resolved laser-induced breakdown spectroscopy (TRELIBS) exhibits a good ability to differentiate among all these species, whatever the culture medium, the species or the strain. Thus we expect that TRELIBS will be a good candidate for a sensor of hazards either on surfaces or in ambient air.
Assuntos
Bactérias/classificação , Substâncias Perigosas/análise , Análise Espectral/instrumentação , Análise Espectral/métodos , Meios de Cultura , Desenho de Equipamento , Lasers , Reprodutibilidade dos Testes , Especificidade da EspécieRESUMO
Direct involvement of the joints is unusual in patients with non-Hodgkin's lymphoma (NHL). This may pose a diagnostic problem for pathologists, especially since synovial localization can disclose NHL. In the following case of T-cell NHL with eosinophilia, we point out the essential importance of clonality analysis on frozen tissue to distinguish between synovial NHL and specific inflammatory damage.
