RESUMO
Superhydrophobic and lubricated slippery surfaces were tested under high salinity inorganic scaling medium and had their antifouling capacity assessed by optical and electron microscopy. The superhydrophobic surfaces were build up with hierarchically rough electropolymerized polyaniline onto stainless steel substrates and functionalized with low-polarizability thiols. Subsequently, these materials were lubricated with perfluorinated oil to obtain slippery surfaces. Regardless of the large amount of inorganic scale found onto superhydrophobic surfaces after the scaling test, the slippery ones showed to be very efficient as fouling preventers. From crystal quartz microbalance experiments, the wetting regime of the superhydrophobic surfaces was evaluated and shows that the Cassie-Baxter effect was not lost during the entire scaling test. The interfaces energies of the systems were assessed with contact angle experiments and showed that the scaling increases because the interfacial free energy is minimized. These results lead to a better understanding of how superhydrophobic surfaces could induce inorganic scaling instead of preventing it.
RESUMO
OBJECTIVES: We investigated the factors associated with discrepancies between patients' and caregivers' ratings about patients' general quality of life (QoL) and about the domains of Quality of Life in Alzheimer's disease (QoL-AD) Scale at baseline and 12 months. METHODS: This was a longitudinal study that comprised 114 outpatients with AD and their caregivers. Patients were assessed with the QoL-AD, Mini-mental State Examination, Assessment Scale of Psychosocial Impact of the Diagnosis of Dementia, Cornell Scale for Depression, Functional Activities Questionnaire, and Neuropsychiatric Inventory, and Clinical Dementia Rating Scale. Caregivers answered the QoL-AD, Zarit Burden Interview and Sociodemographic Questionnaire. RESULTS: Linear regression analyses indicated that the factors associated with discrepancies of patients' and caregivers' ratings of patients' QoL-AD were impaired awareness and caregiver burden at baseline and impaired awareness at 12 months. Moreover, the factor associated with discrepancies in the domain memory was impaired awareness and in the domain ability to do chores, impaired awareness and functional deficit. CONCLUSIONS: The discrepancies between patients and caregivers were related to awareness and caregiver burden at baseline and to awareness at 12 months. These results raise questions regarding the subjective nature of QoL and the validity of patients' evaluation of their own QoL.
Assuntos
Doença de Alzheimer/psicologia , Cuidadores/psicologia , Qualidade de Vida/psicologia , Atividades Cotidianas/psicologia , Idoso , Conscientização , Brasil , Escalas de Graduação Psiquiátrica Breve , Feminino , Humanos , Estudos Longitudinais , Masculino , Inquéritos e QuestionáriosRESUMO
OBJECTIVE: To explore differences in disease awareness in participants of a psychoeducational group designed for Latin American caregivers of people with dementia. METHOD: We assessed participants of a group developed at an outpatient unit for Alzheimer's disease. Interpretative phenomenological analysis was used to analyze differences in the caregivers' reports. RESULTS AND DISCUSSION: The participants, mostly spouses and daughters, presented moderate caregiver burden and different levels of awareness (aware, partially aware, or unaware). Disease awareness and the development of coping strategies were influenced by familism, religiosity, and duty. Becoming a caregiver was considered positive in some cases, due to religious convictions and beliefs related to the importance of caregiving. Caregiver unawareness may reflect an attempt to maintain integrity of the patient's identity. CONCLUSIONS: Our data allow some comparisons across cultures, which may be valuable in assessing the influence of different psychosocial environments on the knowledge about dementia.
RESUMO
Objective: To explore differences in disease awareness in participants of a psychoeducational group designed for Latin American caregivers of people with dementia. Method: We assessed participants of a group developed at an outpatient unit for Alzheimer's disease. Interpretative phenomenological analysis was used to analyze differences in the caregivers' reports. Results and Discussion: The participants, mostly spouses and daughters, presented moderate caregiver burden and different levels of awareness (aware, partially aware, or unaware). Disease awareness and the development of coping strategies were influenced by familism, religiosity, and duty. Becoming a caregiver was considered positive in some cases, due to religious convictions and beliefs related to the importance of caregiving. Caregiver unawareness may reflect an attempt to maintain integrity of the patient's identity. Conclusions: Our data allow some comparisons across cultures, which may be valuable in assessing the influence of different psychosocial environments on the knowledge about dementia.
Objetivo: Examinar diferenças na consciência da doença em participantes de um grupo psicoeducacional direcionado a cuidadores latino-americanos de pessoas com demência. Método: Foram avaliados participantes de um grupo desenvolvido em um serviço para doença de Alzheimer. Utilizou-se análise fenomenológica interpretativa para analisar diferenças nos relatos dos cuidadores. Resultados e Discussão: Os participantes, em sua maioria esposas e filhas, apresentaram sobrecarga moderada e diferentes níveis de consciência da doença (preservada, parcial ou inexistente). A consciência da doença e o desenvolvimento de estratégias de enfrentamento foram influenciados pelo familismo, religiosidade e sentimento de obrigação moral. Tornar-se um cuidador também foi considerado positivo em alguns casos, por convicções religiosas e crenças relacionadas à importância do cuidar. A ausência de consciência pode refletir uma tentativa de manter a identidade do paciente. Conclusão: Os dados permitem algumas comparações entre culturas, as quais podem ser valiosas para avaliar a influência de diferentes contextos psicossociais no conhecimento sobre a demência.