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Bioimplantable impedance and temperature monitor low power micro-system suitabl...
Miranda, N.; Morais, Raul; Dias, Maria Isabel R.; Viegas, Carlos A.; Silva, F.; Serôdio, C.; Almeida, José Carlos; Azevedo, Jorge Manuel Teixeira deBased on cyclic physiologic animal bioimpedance and body temperature a new method is being evaluated to predict estrus in dairy cattle with the aim of improving artificial insemination efficiency. Preceding in-vivo tests are being performed with a dedicated system based on the impedance converter AD5933, and a two-electrode configuration bioimplantable capsule. Acquired results will allow the optimal design of ...
Concept study of an implantable microsystem for electrical resistance and tempe...
Morais, Raul; Valente, António; Almeida, José Carlos; Silva, Amélia; Soares, Salviano; Reis, M.C.; Valentim, Ramiro; Azevedo, Jorge Manuel Teixeira deIn cattle breeding industry, where artificial insemination techniques are employed, the successful detection of estrus onset leads to considerable cost-saving in herd management. One of the most reliable approaches is based on the determination of progesterone concentration in milk. However, these methods rely on the biosensor concept where a biological substrate is used in a chemical-binding reaction to direct...
Viability of pHEMA Hydrogels as Coating in Human Synovial Joint Prosthesis
Bavaresco,V.P.; Zavaglia,C.A.C.; Malmonge,S.M.; Reis,M.C.In artificial joints, the bone part is usually substituted by a metallic component with high corrosion and strength resistance while the articular cartilage is replaced by a polymer. Use of thin layer of a compliant material acting as a bearing surface in human replacement joints has recently generated considerable interest. This work analyses the coating of a solid porous substrate of Ultra High Molecular Weig...
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