Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 5 de 5
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
ACS Sustain Chem Eng ; 12(6): 2386-2393, 2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38362530

RESUMO

Hansen solubility parameters (HSP) of 15 commercially relevant biobased and biodegradable polyesters were experimentally determined by applying a novel approach to the classic solubility study method. In this approach, the extent of swelling in polymer films was determined using a simple equation based on the mass difference between swollen and nonswollen film samples to obtain normalized solvent uptake (N). Using N and HSPiP software, highly accurate HSP values were obtained for all 15 polyesters. Qualitative evaluation of the HSP values was conducted by predicting the miscibility of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHB-co-HHx, 7 mol % HHx) and poly(lactic acid) (PLA) with a novel lignin-based plasticizer (ethyl 3-(4-ethoxy-3-methoxyphenyl)propanoate, EP) with a relative energy difference (RED) less than 0.4. Additionally, an HSP-predicted plasticizer (di(2-ethylhexyl) adipate, DA) with a larger RED (>0.7) was used to demonstrate the effects of less-miscible additives. Plasticized samples were analyzed by differential scanning calorimetry and polarized optical microscopy (POM) to determine the Tg depression, with EP showing linear Tg depression up to 50% plasticizer loading, whereas DA shows minimal Tg depression past 10% loading. Further analysis by POM reveals that the DA phase separates from both polymers at loadings as low as 2.5% (PHB-co-HHx, 7 mol % HHx) and 5% (PLA), while the EP phase separates at a much higher loading of 50% (PHB-co-HHx, 7 mol% HHx) and 30% (PLA).

2.
Health Informatics J ; 25(3): 1053-1064, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-29121820

RESUMO

Computer use is becoming ubiquitous among older adults. As computer use depends on complex cognitive functions, measuring individuals' computer-use behaviours over time may provide a way to detect changes in their cognitive functioning. However, it is uncertain which computer-use behaviour changes are most likely to be associated with declines of particular cognitive functions. To address this, we convened six experts from clinical and cognitive neurosciences to take part in two workshops and a follow-up survey to gain consensus on which computer-use behaviours would likely be the strongest indicators of cognitive decline. This resulted in a list of 21 computer-use behaviours that the majority of experts agreed would offer a 'strong indication' of decline in a specific cognitive function, across Memory, Executive function, Language and Perception and Action domains. This list enables a hypothesis-driven approach to analysing computer-use behaviours predicted to be markers of cognitive decline.


Assuntos
Disfunção Cognitiva/diagnóstico , Interface Usuário-Computador , Idoso , Idoso de 80 Anos ou mais , Educação/métodos , Função Executiva , Feminino , Humanos , Masculino , Testes Neuropsicológicos
3.
Aging Ment Health ; 20(5): 463-73, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-25811103

RESUMO

OBJECTIVES: There is a growing recognition of dementia as a condition that affects both members of a couple individually while also influencing the relational bond between them. This is an area which potentially has important service implications. Accordingly, the aim of this review was to elaborate the experience of dementia on partner/spousal relationships through a synthesis of pertinent qualitative literature. METHOD: A systematic literature search for qualitative research papers was undertaken in November 2013. Five databases (Academic Search Complete, CINAHL, MEDLINE, PsycARTICLES and PsycINFO) were searched using terms for dementia, partner and qualitative data analysis. Meta-synthesis was conducted on the data within the found papers. RESULTS: A line-of-argument synthesis of 10 studies yielded four overarching themes, which highlight couples' efforts to maintain their sense of togetherness; shifts in balance and power within their relationship which can impact upon both partners' sense of identity; the empathy and sensitive attunement between couples as they work to protect each other's sense of role and identity; and the resilience couples demonstrate in the face of great fear, uncertainty and hopelessness. CONCLUSION: Findings have important implications for both research and practice, particularly the need for services to support couples' efforts to enhance couplehood in spite of dementia. Ultimately, this review adds further weight to arguments to refocus dementia care on relationships in addition to individuals.


Assuntos
Cuidadores/psicologia , Demência/psicologia , Características da Família , Relações Interpessoais , Adaptação Psicológica , Feminino , Humanos , Masculino , Estresse Psicológico
4.
J Pers Assess ; 96(5): 544-58, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24206108

RESUMO

Two studies summarize the development and initial validation of the Multicultural Personality Inventory (MPI). In Study 1, the 115-item prototype MPI was administered to 415 university students where exploratory factor analysis resulted in a 70-item, 7-factor model. In Study 2, the 70-item MPI and theoretically related companion instruments were administered to a multisite sample of 576 university students. Confirmatory factory analysis found the 7-factor structure to be a relatively good fit to the data (Comparative Fit Index =.954; root mean square error of approximation =.057), and MPI factors predicted variance in criterion variables above and beyond the variance accounted for by broad personality traits (i.e., Big Five). Study limitations and directions for further validation research are specified.


Assuntos
Modelos Psicológicos , Inventário de Personalidade , Personalidade , Grupos Raciais/psicologia , Adolescente , Adulto , Análise Fatorial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários , Adulto Jovem
5.
Autism ; 10(2): 125-38, 2006 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16613863

RESUMO

Social Stories are an extensively used intervention to address behaviour difficulties of children on the autistic spectrum. This article summarizes what Social Stories are and sets out to determine whether there is any relevant literature demonstrating the effectiveness of this intervention. Whilst the existing literature suggests positive findings with respect to the effectiveness of Social Stories, there is considerable variability in the quality of research methodology, with no single study employing comprehensive, stringent standards. This article highlights the factors that should be considered and addressed when testing the effectiveness of Social Stories, as a means of informing future research.


Assuntos
Transtorno Autístico/psicologia , Transtorno Autístico/terapia , Terapia Comportamental/métodos , Transtornos do Comportamento Infantil/terapia , Pesquisa sobre Serviços de Saúde/métodos , Comportamento Social , Adolescente , Criança , Transtornos do Comportamento Infantil/psicologia , Humanos , Sistemas de Informação/estatística & dados numéricos , Avaliação de Resultados em Cuidados de Saúde , Avaliação de Processos em Cuidados de Saúde/métodos , Leitura , Projetos de Pesquisa/normas , Ajustamento Social , Resultado do Tratamento , Comportamento Verbal
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...