Seed deterioration is expressed as the loss of viability, vigour and quality during ageing. The major causes seed refer to free radical-mediated lipid peroxidation, enzyme inactivation or protein degradation, disruption cellular membranes damage genetic integrity. Accelerated ageing (AA) a simple method for studying mechanisms over short periods. In order estimate rate, seeds four maize genotyp...

The story of vascular ageing was first described in the seventeenth century when Thomas Sydenham wrote that ‘A man is as old as his arteries’. This aphorism was returned to publicity lately when Peter Nilsson reintroduced the concept of early vascular ageing. As vascular ageing is described a gradual process involving biochemical, enzymatic, and cellular changes of the vasculature and modificat...

Ageing is a process that gradually increases the organism's vulnerability to death. It affects different biological pathways, and the underlying cellular mechanisms are complex. In view of the growing disease burden of ageing populations, increasing efforts are being invested in understanding the pathways and mechanisms of ageing. We review some mouse models commonly used in studies on ageing, ...

This paper describes an accelerated ageing experiment of transformer oil/paper insulation with preset moisture levels. These samples were tested with return voltage and polarisation/depolarisation measurements. Molecular weight has also been measured with Gel Permeation Chromatography (GPC). Results suggested the impact of moisture on the ageing of oil/paper insulation. An attempt has been made...

Phase-locked-loop in radiofrequency and mixed signal integrated circuit experience noise as electromagnetic interference coupled on input and power supply which translates to the timing jitter. Most of PLL noise analysis did not take into account the ageing effect. However device ageing can degrade the physical parameters of transistors and makes noise impact worse. This paper deals with the an...

hutchinson-gilford progeria syndrome (hgps) is a rare premature ageing disorder that is characterized by accelerated degenerative changes of the cutaneous, musculoskeletal and cardiovascular systems. mean age at diagnosis is 2.9 years and generally leading to death at approximately 13 years of age due to myocardial infarction or stroke. orthopedic manifestations of hgps are multiple and shoulde...