RESUMO
Having similar properties with natural bone, has made porous NiTi shape memory alloy (SMA) a promising material for biomedical applications. In this study porous NiTi SMA has synthesized with 30 and 40 vol.% green porosity by self propagating high temperature synthesis (SHS) from elemental Ni and Ti powders. After synthesizing, the average porosity of specimens reached to 36.8 and 49.8% for green compacts with 30 and 40 vol.% of green porosity, respectively. Combustion products were characterized by XRD, SEM, EDS and electrochemical polarization test. Although desired B2 (NiTi) phase was the dominant phase, other phases like Ti2Ni, Ni3Ti and Ni4Ti3 are found. Electrochemical polarization analysis in simulated body fluids (SBF) shows that, synthesized porous NiTi has better corrosion resistance than solid one and hydroxy apatite coating on porous NiTi worsen electrochemical corrosion resistance which is because of bioactive behavior of hydroxy apatite.
Assuntos
Ligas/síntese química , Materiais Biocompatíveis/síntese química , Temperatura Alta , Microtecnologia/métodos , Níquel/química , Polimerização , Titânio/química , Ligas/química , Materiais Biocompatíveis/química , Teste de Materiais , Microscopia Eletrônica de Varredura , Porosidade , Pós/síntese química , Pós/química , Espectrometria por Raios X , Propriedades de Superfície , Difração de Raios XRESUMO
A prospective survey of pharmacists' tasks and patients' knowledge and satisfaction was conducted in 35 randomly selected community pharmacies in Tabriz, Islamic Republic of Iran. The total pharmacist interaction received a mean score of 3.05 out of 5. Providing written directions for use attained the highest score of 0.98 out of 1. Patients scored 3.18 out of 5 for knowledge about their medicines. There was a close correlation between patients' knowledge of dispensed drugs and pharmacist interaction (r = 0.95). Mean total prescription filling time was 7.6 min, but only 1.4 min was spent on pharmacist-patient counselling. The interaction between pharmacist and patient increases patients' knowledge about dispensed medicines and their satisfaction with the pharmacist's activities.
Assuntos
Serviços Comunitários de Farmácia/organização & administração , Educação de Pacientes como Assunto/organização & administração , Satisfação do Paciente , Farmacêuticos , Papel Profissional , Relações Profissional-Paciente , Comunicação , Rotulagem de Medicamentos , Prescrições de Medicamentos , Avaliação Educacional , Humanos , Irã (Geográfico) , Modelos Lineares , Anamnese , Satisfação do Paciente/estatística & dados numéricos , Farmacêuticos/organização & administração , Farmacêuticos/psicologia , Papel Profissional/psicologia , Estudos Prospectivos , Qualidade da Assistência à Saúde , Estudos de Tempo e MovimentoRESUMO
A prospective survey of pharmacists' tasks and patients' knowledge and satisfaction was conducted in 35 randomly selected community pharmacies in Tabriz, Islamic Republic of Iran. The total pharmacist interaction received a mean score of 3.05 out of 5. Providing written directions for use attained the highest score of 0.98 out of 1. Patients scored 3.18 out of 5 for knowledge about their medicines. There was a close correlation between patients' knowledge of dispensed drugs and pharmacist interaction [r = 0.95]. Mean total prescription filling time was 7.6 min, but only 1.4 min was spent on pharmacist-patient counselling. The interaction between pharmacist and patient increases patients' knowledge about dispensed medicines and their satisfaction with the pharmacist's activities