Zasada racji dostatecznej w kontekście semantycznej kontrowersji realizm–antyrealizm

"Principle of sufficient reason in the context of the realism-antirealism semantic controversy". The topic of this article is the cognitive and semantic status of Michael Dummett’s principle C. According to the principle, if a statement is true, there must be something in virtue of which it is true. The author suggests the interpretation of principle C in terms of the sufficient reason principle as a contemporary, weaker and semantic counterpart of the classical version of the principle. Considerations include such problems as: the distinction between the reason-consequence relationship and cause-effect relationship; the reductionism and justificationism in the context of the realism-antirealism semantic controversy; the reversibility of reason-consequence relationship and the question of a search for ultimate reasons. The author also distinguishes three forms of the sufficient reason principle: metaphysical, ontological and propositional.

Sistemas de vigilância e alerta em saúde: Temperaturas Extremas

Prevê-se além do aumento da temperatura média, um aumento de episódios extremos em número de ocorrências, duração e intensidade [1]. Efeito do Clima na Saúde: Ondas de calor [2] → Períodos de calor extremo Aumento da mortalidade por doenças cardiovasculares e respiratórias Óbitos por insolação Atraso até 3 dias Vagas de frio → Períodos de frio extremo Aumento da atividade dos vírus respiratórios (ex. gripe) Aumento da mortalidade por doenças circulatórias e respiratórias Atraso até 7 dias

The effect of extreme cold temperatures on the risk of death in the two major Portuguese cities

It is well known that meteorological conditions influence the comfort and human health. Southern European countries, including Portugal, show the highest mortality rates during winter, but the effects of extreme cold temperatures in Portugal have never been estimated. The objective of this study was the estimation of the effect of extreme cold temperatures on the risk of death in Lisbon and Oporto, aiming the production of scientific evidence for the development of a real-time health warning system. Poisson regression models combined with distributed lag non-linear models were applied to assess the exposure-response relation and lag patterns of the association between minimum temperature and all-causes mortality and between minimum temperature and circulatory and respiratory system diseases mortality from 1992 to 2012, stratified by age, for the period from November to March. The analysis was adjusted for over dispersion and population size, for the confounding effect of influenza epidemics and controlled for long-term trend, seasonality and day of the week. Results showed that the effect of cold temperatures in mortality was not immediate, presenting a 1–2-day delay, reaching maximumincreased risk of death after 6–7 days and lasting up to 20–28 days. The overall effect was generally higher and more persistent in Lisbon than in Oporto, particularly for circulatory and respiratory mortality and for the elderly. Exposure to cold temperatures is an important public health problem for a relevant part of the Portuguese population, in particular in Lisbon.