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In vivo biological behavior of calcium phosphate cements with different Ca/P ratio
(2009-02-02)
Bioceramics with different Ca/P ratio were prepared from a mechanical mixture of NaPO3, CaCO3, Ca(OH)2 and phosphate buffer solution and implanted in rats subcutaneous tissues. The cements were characterized by Thermo ...
In vivo biological behavior of calcium phosphate cements with different Ca/P ratio
(2009-02-02)
Bioceramics with different Ca/P ratio were prepared from a mechanical mixture of NaPO3, CaCO3, Ca(OH)2 and phosphate buffer solution and implanted in rats subcutaneous tissues. The cements were characterized by Thermo ...
Phase changes of petroleum mixtures by monitoring temperature and conductivity for paraffin formation
(Brazilian Journal of Petroleum and Gas, 2007)
Determination of wax appearance temperature (WAT) in paraffin/solvent systems by photoelectric signal and viscosimetry
(Associação Brasileira de Pesquisa e Desenvolvimento em Petróleo e Gás, 2009)
The wax appearance temperature (WAT) is the temperature at which the first wax crystals start to form,
on cooling of paraffin/solvent systems. There are a number of different WAT determination methods,
including: density ...
Detecção de parafina por instrumentação ultrassônica
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2015-11-26)
An obstruction in the oil pipelines’ inner walls of transport and production due to hydrocarbon deposition is a serious problem that can cause operational risks, equipment losses and lead to losses to the industry. This ...
Thermal energy storage characterization of cementitious composites made with recycled brick aggregates containing PCM
(Elsevier Science SA, 2019-11)
This paper reports the results of an experimental program on sustainable cementitious composites made with Recycled Brick Aggregates (RBAs) employed as carriers for Phase-Change Materials (PCMs). The PCM-RBAs were produced ...
Uma modelagem fundamental para a deposição de parafinas em tubulações
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2017-07-04)
Operations of production of crude heavy oil in offshore platforms tend to present problems on maintenance of productive flow due to the deposition of paraffin in the walls of pipelines. Paraffin is the denomination of long ...