Publications by authors named "Antonio Celso Fonseca de Arruda"
The aim of this work is the evaluation of four different heat exchangers used for myocardium during cardioplegic system in cardiac surgeries. Four types of shell and tube heat exchangers made of different exchange elements were constructed, as follows: stainless steel tubes, aluminium tubes, polypropylene hollow fiber, and bellows type. The evaluation was performed by in vitro tests of parameters such as heat transfer, pressure drop, and hemolysis tendency.
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- - Calcium phosphate bone cements are great for orthopedic use due to their biocompatibility and bioactivity, making them effective for bone healing, but they struggle with low mechanical strength and toughness compared to human bone.
- - This study focused on enhancing the mechanical properties of alpha-tricalcium phosphate-based cement by adding polypropylene, nylon, and carbon fibers, assessing how these additions affect the cement's performance.
- - While adding fibers decreased the cement's compression strength due to increased porosity, it significantly improved its toughness and tensile strength, suggesting potential applications in areas that experience bending forces.