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The High-Velocity Impact Behaviour of Kevlar Composite Laminates Filled with Co...

Amaro, Ana Martins; Reis, Paulo Nobre Balbis; Ivañez, Ines; Sánchez-Saez, Sonia; Garcia-Castillo, Shirley Kalamis; Barbero, Enrique

The literature reports benefits when the cork powder obtained from industrial by-products is used as the filler of composite laminates. For example, while the fatigue life is insensitive to the presence of cork in the resin, significant improvements are achieved in terms of to low-velocity impact strength. However, in terms of ballistic domain, the literature does not yet report any study about the e ect of inc...


The Effect of External Fixator Configurations on the Dynamic Compression Load: ...

Amaro, Ana Martins; Paulino, Maria Fátima; Roseiro, Luís Manuel; Neto, Maria Augusta

(1) Objective: External fixation systems are commonly used by surgeons to ensure stabilization and consolidation of bone fractures, especially in patients who are at high risk for systematic complications. Both rigid and elastic external fixations are important in the fracture healing process. This study aims to evaluate the behavior of the Orthofix Limb Reconstruction System (LRS)® in the dynamic compression m...


Effect of Fibre Orientation and Hostile Solutions on Stress Relaxation of Glass...

Reis, Paulo Nobre Balbis Dos; Amaro, Ana Martins; Neto, Maria Augusta

Polyamide creates high-performance composite materials, which are replacing the traditional epoxy composites in several applications. In this context, exposure to hostile environments is expected. On the other hand, due to the viscoelastic nature of the matrix, these composite materials are prone to stress relaxation. Therefore, the stress relaxation behaviour of glass/polyamide 6 composites was studied conside...


Ética Organizacional, Compromisso Organizacional e Satisfação no Trabalho no Co...

Amaro, Ana Martins

Os call centers são um fenómeno que tem emergido na economia portuguesa ao longo dos últimos anos e que empregam uma vasta camada populacional. Esta investigação pretende contribuir para um melhor conhecimento desta actividade profissional, porque, embora se verifique o crescimento deste sector, constata-se uma grande escassez de estudos sobre o sector de atividade dos call centers. Mais concretamente, este est...


História de vitimização, vinculação e tentativas de suicídio em utentes de serv...

Amaro, Ana Martins

O presente estudo tem como objetivos avaliar a história de vitimização ao longo da vida e as características de vinculação em utentes de serviço de psiquiatria, comparando utentes que nunca tentaram o suicídio e utentes que já tentaram o suicídio. Neste estudo participaram 100 utentes de serviços de psiquiatria, 55 indivíduos sem tentativa e suicídio e 45 com tentativa de suicídio. Os instrumentos utilizados fo...


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