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Control and minimization of crud in a shallow layer gravity settler

X-ray diffraction characterization of ion-implanted austenitic stainless steel

The effect of ion implantation surface treatment in an austenitic stainless steel, AISI 304, with nitrogen and argon ions is presented in this work. The study concerns phase analysis, crystallographic texture, and in depth residual stress profile characterization by X-ray diffraction. In order to determine the residual stress depth profiles, a combination of the conventional X-ray diffraction technique, with se...

Innovation cooperation networks: case of a multisectoral and interdisciplinary ...

Network cooperation processes gained special interest in the new knowledge economy as they provide better conditions to innovation and knowledge creation and diffusion. Although the importance of this strategic tool has been increasingly recognized, individualistic behaviour tends to prevail within small and medium-sized firms and many of them continue to exhibit an attitude of resistance when dealing with coll...

Implantação do programa de fitoterapia "Verde Vida" na secretaria de saúde de M...

Há muitos anos, tenta-se implantar a fitoterapia no município de Maringá, o que só foi possível em 2000, com a criação de uma comissão específica, definição das plantas segundo critérios epidemiológicos, literatura disponível e adoção do formato de farmácia de manipulação. Foram padronizados os fitoterápicos nas formas de infusão (espinheira-santa, guaco, cavalinha, hortelã e funcho), gel (própolis e calêndula)...

Impaired regeneration of dystrophin-deficient muscle fibers is caused by exhaus...

Duchenne muscular dystrophy is one of the most devastating myopathies. Muscle fibers undergo necrosis and lose their ability to regenerate, and this may be related to increased interstitial fibrosis or the exhaustion of satellite cells. In this study, we used mdx mice, an animal model of Duchenne muscular dystrophy, to assess whether muscle fibers lose their ability to regenerate after repeated cycles of degene...

A methodology development for the study of near surface stress gradients

A modification of the geometry used in the sin2 [psi] technique of X-ray diffraction is described. A modified equation for residual stress determination, including geometric adapted Fij, is presented. This method allows near surface stress gradients determination and is called pseudo-grazing incidence method. The limits of the new technique were first tested on different powder materials with X-ray radiation pr...

Concentration of airborne pollen from Cupressaceae in Lisbon

The concentration of airborne pollen from Cupressaceae was regularly monitored in Lisbon during 1997 and 1999, and the phenology of flowering cypress was studied in several species of the genus from 1992 to February 2000. Both methods showed a peak of pollen abundance during the month of February, with the airborne pollen concentration decreasing strongly to March and April. The results shown are in accordance ...