Concrete is a remarkable structural material that has been widely used in the modern age. Nevertheless, natural causes that affect durability and consequently service life of concrete are related with surface damage and cracking of the material. Cracks can influence functionality for liquid retaining structures and can also decrease durability due ingress of water and ions towards steel reinfor...

Telomeres are short tandem repeated sequences of DNA found at the ends of eukaryotic chromosomes that function in stabilizing chromosomal end integrity. In vivo studies of somatic tissue of mammals and birds have shown a correlation between telomere length and organismal age within species, and correlations between telomere shortening rate and lifespan among species. This result presents the ta...

This article challenges the generally accepted thesis that the emergence and dominance of chronic illness over the last half century is due to the receding tide of acute infectious diseases and an ageing population. Instead, through an analysis of contemporary reports in the Journal of the American Medical Association, it is argued that the construct of chronic illness emerged as part of a new ...

This article is a response to David Armstrong's recent, revisionist account of the epidemiological transition which he claims replaced earlier discourses of ageing with new discourses of chronic disease. We argue (i) that he misrepresents a key element in Omran's account of the epidemiological transition, namely the decline in infant, child and maternal mortality; (ii) that he fails to acknowle...

The dynamical mechanical analysis (DMA) technique was used for the characterization of some recently manufactured and historical parchments and leathers. The obtained results were correlated with the DSC measurements performed for these biomaterials. We point out the suitability of the DMA method for distinguishing qualitatively between a recently manufactured leather and a patrimonial one, as ...

This is an overview of the phenomenon of population ageing and ageing trends in Jamaica. It documents landmark policy achievements and responses to population ageing and analyses related social, economic and health implications, as well as, the challenges and opportunities of ageing. The interdigitations of ageing issues and public health is manifest from the early historical milestones in agei...

Abstract Daphnia pulex is a natural food widely used in aquaculture, and S6K plays an important role protein translation ageing. To explore the function of ageing process D. , we cloned analysed full-length cDNA S6K. With growth expression mRNA first increased, then peaked at 10 days, decreased. Western blot analysis showed that increased from 1 to 5 days age, but did not change significantly 2...