Type

Database

Creator

Date

Thumbnail

Search results

286,182 records were found.

The main goal of this study was to evaluate the different captive conditions and their effect on the behaviour and physiology related to stress in three wild cats species, ocelot (Leopardus pardalis; n = 6), margay (Leopardus wiedii; n = 1) and tigrina (Leopardus tigrinus; n = 5). The individuals were housed as singleton, and they were tested in three phases: phase I – empty enclosure for 14 days; phase II – enriched enclosure for 21 days (different kinds of enrichment were used in the same time in every enclosure); phase III – empty enclosure for nine days. Faecal samples were collected weekly throughout the study (one or two samples) to analyse corticoid metabolites. About forty four hours of Behaviour observations were conducted on each individual. The duration of some behaviours related to stress, mainly pacing and self-directed sc...
This research had as main objective to evaluate the quality of the content of the information on hypercholesterolaemia retrieved by the general Web search engines of the Web, in the Brazilian websites, based in the quality approaches described in the literature specialized in Health. The information quality criteria and indicators defined by the Health Information Technology Institute (HITI), with support of Agency of Health Care Policy and Research (AHCPR) was focused. The studies published in the main sources of printed and electronic information about information quality in the Web was analyzed. The main quality criteria recommended by information units, scientific editors, health professionals, international organisms and Brazilian institutions that act as regulators, was selected and examined. The data about the conditions of pres...
Fundação para a Ciência e Tecnologia (FCT) - financial support on PhD scholarship SFRH/B46658/2008.
The present work search to analyze the behavior of the models of mensuration of market risk VaR and CVaR for in the Brazilian market of actions, calculated by the methodology of the historical simulation, GARCH, Riskmetrics and Normal. They were used as sample the data empiric of PETR4, TNLP4, VALE5, USIM5 and CSNA3, that understands the mail carrier of the Index of Bovespa five more liquid actions (Ibovespa) effective of January to April of 2006, with the closing prices embracing the period of 30/12/1998 to for 29/12/2005. All the methodologies were calculated for a α of 1% and 5%, using windows of 126 and 252 days. With the objective of testing the models the tests of Kupiec were used (unconditional), Christoffersen (conditional) and Berkowitz, and the test of Berkowitz was used for two cases, test of the tails of the distributions a...
Resumo da tese:Objectivos: Avaliou-se a adesão e a evolução temporal de Portugal ao padrão alimentar mediterrânico e às recomendações alimentares populacionais da World Health Organization (WHO) para a prevenção de doenças crónicas e degenerativas. Metodologia: Às disponibilidades de alimentos das balanças alimentares da Food and Agriculture Organization (FAO) relativas a Portugal no período entre 1961 e 2003, aplicaram-se dois índices de qualidade alimentar: o Mediterranean Adequacy Index (MAI) e o Healthy Diet Indicator revisto (HDIr). A correlação de Pearson foi utilizada para verificar a associação entre o MAI e outras variáveis contínuas como o tempo e as disponibilidades de grupos alimentares. A correlação de Spearman permitiu avaliar a relação entre o HDIr e a variável continua tempo. Resultados: Portugal aderiu ao padrão alimen...
Apresentação realizada no 9th European Sociological Association Conference, em Lisboa em 2009
Free-living amoebas are unicellular protozoan parasites found in humid soil and aquatic habitats. They develop in soil, dust, air and can also be isolated from motionless water, swimming pools, lakes, dams, contact lenses cleaning solutions, drains, air-conditioner, warming and ventilation units and intestinal lavage fluid. The genera of importance in Public Health are: Naegleria, Acanthamoeba, Balamuthia and Sappinia (recently discovered). Considering the Public Health impact of Acanthamoeba and Naegleria genera, a research was made to verify their existence in environmental samples (openair swimming pools and gardens) in Brasília, Brazil. Some samples from swimming pools (34) and soil (15) were collected in order to verify the presence of free-living amoebas. Direct observation of the samples previously concentrated and in vitro cult...
The thesis analyses exchange rate anchors over the 90´s and their relationship with economic fundaments. Specifically, it was examined whether the episodes of exchange rate volatility experienced in Brazil are directly caused by the deterioration of economic fundaments. First, the Real Plan was described, as well as the central role of the exchange rate anchor to that stabilization program. Next, from a theoretical standpoint, the definition and the uses of exchange rate anchors – in general –, along with the specifics of the Brazilian experience were evaluated. Next topic was the construction of an “exchange rate pressure index”, based on the nominal exchange rate, the stock of foreign exchange reserves and the current interest rates. The instrument was used to identify moments at which the national currency was under speculative atta...
Want to know more?If you want to know more about this cutting edge product, or schedule a demonstration on your own organisation, please feel free to contact us or read the available documentation at http://www.keep.pt/produtos/retrievo/?lang=en