The aim of nuclear power plant ageing management is to maintain an adequate safety level throughout the lifetime of the plant. In ageing studies, the reliability of components, systems and structures is evaluated taking into account the possible time-dependent degradation. The phases of ageing analyses are generally the identification of critical components, identification and evaluation of age...

to study the effects of different levels of seed ageing and bacteria inoculation on yield of common bean at field conditions, an experiment was carried out as factorial arranged in rcbd design with three replications at research farm of university of tehran (karaj-iran) in 2012. treatments consisted of four levels of seed ageing (0 (control), 3, 6 and 9 days at 41°c and 90-100% relative humidit...

objective: ageing of the stored seed is a natural phenomenon and the seeds tend to lose viability even under ideal storage conditions. accelerated ageing has been recognized as a good predictor of the storability of seed lots. aged seeds show decreased vigor and produce weak seedlings that are unable to survive once reintroduced into a habitat. the characteristics of the chemical composition of...

Given the myriad of age-related changes and the many proposed mechanistic theories of ageing, a major problem in gerontology is distinguishing causes from effects. This review aims to identify and evaluate those mechanisms which have gathered experimental support in favour of seeing them as a cause rather than an effect of ageing. Recent results related to energy metabolism and ageing, the free...

ageing is a complex process and a broad spectrum of physical, psychological, and social changes over time. accompanying diseases and disabilities, which can interfere with cancer treatment and recovery, occur in old ages. micrornas (mirnas) are a set of small non-coding rnas, which have considerable roles in post-transcriptional regulation at gene expression level. in this review, we attempted ...

Ageing is a leading risk factor for many debilitating diseases. While age-related diseases have been the subject of over a century of intense investigation, until recently, physiological ageing was considered unavoidable. Pharmacological and genetic studies have since shown that ageing is a malleable process and that its abrogation can prevent its associated diseases. This review summarises a s...

In recent years, there has been a significant push to develop optimized pile designs in the offshore industry, driven by growth of wind. One largest remaining uncertainties governing axial design sands is influence ageing effects and how an aged responds under cyclic loading. This paper presents results from long-term campaign field tests on loading sands, undertaken at Blessington geotechnical...

Ageing describes the progressive functional decline of an organism over time, leading to an increase in susceptibility to age-related diseases and eventually to death, and it is a phenomenon observed across a wide range of organisms. Despite a vast repertoire of ageing studies performed over the past century, the exact causes of ageing remain unknown. For over 50 years it has been speculated th...

Human ageing is a global problem that will have a large socio-economic impact. A better understanding of ageing can direct public policies that minimize its negative effects in the future. Over many years, several longitudinal studies of human ageing have been conducted aiming to comprehend the phenomenon, and various factors influencing human ageing are under analysis. In this review, we categ...