Search results for "Ageing"
showing 10 items of 609 documents
Les Grandes Plaines des Etats-Unis : une Amérique du déclin démographique
2003
The Shinking of Population in the Great Plains of the United States. In the Plain States (Kansas, Nebraska, South Dakota and North Dakota), where many of the American counties experiencing losses in population are concentrated, the variety of population dynamics is wider than expected. Besides persistent decline linked to rural outmigration and ageing in remote locations, the is also a rapid growth of the principal metropolitan areas of the region. In several counties, the reversal of demographic fortunes is linked to the recent creation of large meatpacking plants, which have recruited Mexican labor. The sudden arrival of Hispanics in small rural towns has generated tensions. The magnitude…
Measurement of Mechanical Properties of Cantilever Shaped Materials
2008
Microcantilevers were first introduced as imaging probes in Atomic Force Microscopy (AFM) due to their extremely high sensitivity in measuring surface forces. The versatility of these probes, however, allows the sensing and measurement of a host of mechanical properties of various materials. Sensor parameters such as resonance frequency, quality factor, amplitude of vibration and bending due to a differential stress can all be simultaneously determined for a cantilever. When measuring the mechanical properties of materials, identifying and discerning the most influential parameters responsible for the observed changes in the cantilever response are important. We will, therefore, discuss the…
PROPERTIES OF IONIZING RADIATION CURED POLYMER MATRICES FOR CARBON FIBER COMPOSITES AFTER AGEING DUE TO MOISTURE ABSORPTION AND THERMAL TREATMENT
2008
Idrothermal ageing of ionizing radiation cured epoxy matrices for carbon fibre composites
2008
The Association between Dietary Magnesium Intake and Magnetic Resonance Parameters for Knee Osteoarthritis
2019
The aim of the study was to evaluate the relationship between dietary magnesium (Mg) intake and prevalence of knee osteoarthritis (OA), a topic poorly explored in the literature. Overall, 783 people participating in the Osteoarthritis Initiative (59.8% females
Mitochondrial biogenesis in exercise and in ageing☆
2009
Mitochondrial biogenesis is critical for the normal function of cells. It is well known that mitochondria are produced and eventually after normal functioning they are degraded. Thus, the actual level of mitochondria in cells is dependent both on the synthesis and the degradation. Ever since the proposal of the mitochondrial theory of ageing by Jaime Miquel in the 70's, it was appreciated that mitochondria, which are both a target and a source of radicals in cells, are most important organelles to understand ageing. Thus, a common feature between cell physiology of ageing and exercise is that in both situations mitochondria are critical for normal cell functioning. Mitochondrial synthesis i…
Delayed ageing through damage protection by the Arf/p53 pathway.
2007
The tumour-suppressor pathway formed by the alternative reading frame protein of the Cdkn2a locus (Arf) and by p53 (also called Trp53) plays a central part in the detection and elimination of cellular damage, and this constitutes the basis of its potent cancer protection activity. Similar to cancer, ageing also results from the accumulation of damage and, therefore, we have reasoned that Arf/p53 could have anti-ageing activity by alleviating the load of age-associated damage. Here we show that genetically manipulated mice with increased, but otherwise normally regulated, levels of Arf and p53 present strong cancer resistance and have decreased levels of ageing-associated damage. These obser…
The cell signalling disruption theory of ageing: importance in Alzheimer’s disease and sarcopenia
2015
Instabilities Effects in Thin Film Solar Cells: Reversible Ageing, Performance Recovery and Improvement by Electrical Stresses
The Present and the Future of Occupational Therapy
2020
The present and the future are often interacting in the care of older people. The cultural changes in Europe require the occupational therapy to focus on a personalized approach given the ageing population in different cultures. In this matter, loneliness and boredom are two emerging conditions, which require a specific approach to improve the quality of life of the elderly in different settings. Technology and assistive technology might represent a venue to improve the occupational therapy management of older people. Finally, the continuous evaluation of occupational therapy interventions in clinical trials is key to provide the scientific evidence for the best approach to elderly people.