Teresa Mendes de Almeida

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The inositolphosphosphingolipid phospholipase C (Isc1p) of Saccharomyces cerevisiae belongs to the family of neutral sphingomyelinases that generates the bioactive sphingolipid ceramide. In this work the role of Isc1p in oxidative stress resistance and chronological lifespan was investigated. Loss of Isc1p resulted in a higher sensitivity to hydrogen(More)
This paper presents a prototype of a platform for biomolecular recognition detection. The system is based on a magnetoresistive biochip that performs biorecognition assays by detecting magnetically tagged targets. All the electronic circuitry for addressing, driving and reading out signals from spin-valve or magnetic tunnel junctions sensors is implemented(More)
This paper presents a hand-held microsystem based on new fully integrated magnetoresistive biochips for biomolecular recognition (DNA hybridisation, antibody antigen interaction, etc.). These biochips use magnetic field arraying of magnetically tagged biomolecules and high sensitivity sensors which potentially detect single or few biomolecules.(More)
— This paper presents a recently developed hand-held biochip-based microsystem. The microsystem is based on a magneto-resistive array biochip composed of a number of sensing sites with magnetic tunneling junctions (MTJ) and diodes. To drive the MTJ, different techniques are addressed with different types of signals. Filtering strategies are also presented,(More)
Embedded Systems assume an increasing importance in biomedical applications such as clinical analysis and patient monitoring. The lack of generic architec-tures make the design of this type of autonomous embedded systems a cumbersome and expensive task. This paper proposes a generic architecture for developing biomedical embedded systems, considering both(More)
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