Ricerc@Sapienza

Background: The impact of seasonal changes on the incidence of acute myocardial infarction has been incompletely appraised, especially in the modern era of primary percutaneous coronary intervention (PPCI). We aimed to appraise the overall and season-specific impact of climate changes on the daily rate of PCCI. Methods: Details on PPCI and climate changes were retrospectively collected in three high-volume Italian institutions with different geographical features.

Despite increasing attention to contextual effects on the relationship between supervisor enforcementand employee safety compliance, no study has yet explored the conjoint influence exerted simulta-neously by organizational safety climate and safety culture. The present study seeks to address thisliterature shortcoming. We first begin by briefly discussing the theoretical distinctions between safetyclimate and culture and the rationale for examining these together.

The chapter summarized the main climatic, environmental and archaeological phenomena of Holocene central Sahara.

This work presents the preliminary results of the archaeological research in southern Tunisia. The program, though strongly hindered by the serious internal situation and dramatically shaken by the attacks sf 2015, allowed an initial assessment of the archaeological potential of the

Over the last decade, observations acquired by the Shallow Radar (SHARAD) sounder on individual passes of the Mars Reconnaissance Orbiter have revealed the internal structure of the Martian polar caps and provided new insights into the formation of the icy layers within and their relationship to climate. However, a complete picture of the cap interiors has been hampered by interfering reflections from off-nadir surface features and signal losses associated with sloping structures and scattering. Foss et al.

Because Africa's climate hampers DNA preservation, knowledge of its genetic variability is mainly restricted to modern samples, even though population genetics dynamics and back-migrations from Eurasia may have modified haplotype frequencies, masking ancient genetic scenarios. Thanks to improved methodologies, ancient genetic data for the African continent are now increasingly available, starting to fill in the gap.

A central issue in ecology is understanding how complex and biodiverse food webs persist in the face of disturbance, and which structural properties affect disturbance propagation among species. However, our comprehension of assemblage mechanisms and disturbance propagation in food webs is limited by the multitude of stressors affecting ecosystems, impairing ecosystem management.

Bengali translation of Cederlof's study on the beginning of British colonial rule in north-east India.