Search results for "tract"

About the validation of models for multicomponent systems

We shall discuss the derivation of systems of partial differ- ential equations, where hydrodynamic equations are coupled to mean field (Vlasov type) kinetic equations, as the asymptotic limit of suitable models on a smaller scale. This kind of PDE systems can be considered as simply modelling multicomponent flows in mixtures containing a dispersed phase, such as sprays or aerosols. In this talk we shall give an overview of results of various type obtained in cooperation with E. Bernard, L. Desvillettes, F. Golse.

Chapter 6 Colon

2009

Abstract The aim of this chapter is to show the key features of adult colon stem cells and provide a useful tool for their isolation, characterization and propagation.

A call for dissensus in art education!

2019

This article argues for the relevance of the term dissensus by the French philosopher Jacques Rancière in an art educational context in particular and an educational context in general. This argument is based on research referred to in this article, where the author made use of dissensus to analyse how encounters with contemporary art contribute to movements in youngsters’ ways of relating to artworks and the environment that surrounds them, as well as changes in the ways of relating to themselves and others ‐ what here is called events of subjectivation. As dissensus is seen as a premise for subjectivation, the author argues for initiating dissensus by introducing students to both art and …

What happens to the BRONJ patients when re-classified according to the novel SICMF-SIPMO recommendations? Our experience

2014

Background. Since 2009, according to the American Association of Oral and Maxillofacial Surgeons staging system (AAOMS-SS), Bisphosphonate Related Osteonecrosis of the Jaw (BRONJ) has been defined by the presence of bone exposition; in absence of this condition, patients presenting other unspecific clinical and/or radiological signs of disease were classified into the “stage 0”. In 2012, the Italian Society of Maxillo-Facial Surgery (SICMF) and the Italian Society of Oral Pathology and Medicine (SIPMO) redefined BRONJ, as an adverse drug event, with several clinical forms (exposed and not-exposed), and updated the staging system, abolishing the stage 0. Aim of this study was to re-classify …

LAB-STEM CELLS

2012

EMBEDDING CONTEXT IN INVESTIGATIONS OF AFFECTIVE VARIABILITY: AGE DIFFERENCES IN AFFECT-HEALTH LINKS

2017

Context plays a potentially important role in explaining variability in affective experiences and yet, has often been overlooked in this line of research. The current study used data from a lifespan sample of 398 German participants ranging between 12–88 years of age (M = 40, SD = 20). Participants completed computer assisted personal interviews regarding health and well-being measures, as well as experience sampling assessments of daily affective experiences and events (e.g., uplifts). Three indices of positive affect (PA) were created: mean PA, PA reactivity to uplifts, and PA variability. In general, greater mean PA and lower PA reactivity and variability were associated with better heal…

IN THE EYE OF THE BEHOLDER: NEGATIVE AFFECT VALUATION IN LATER ADULTHOOD

2018

Affective values may shape how affect is linked to health and well-being. Much of the work to date, however, has focused mostly on younger, European American adult samples. Yet, emotional experiences are known to take on greater importance in later life. In the current study, 313 participants (65+ years old) from the Daily Experiences and Well-Being Study (DEWS) completed baseline interviews, questionnaires, and 4–5 days of ecological momentary assessments (EMA). The baseline EMA surveys assessed momentary affect whereas the questionnaires assessed negative affect valuation (NAV): the extent to which people recognize value in negative emotional experiences in terms of their pleasantness, ap…

FREE RADICAL THEORY OF FRAILTY: MOLECULAR MECHANISMS OF FRAILTY RESULTING FROM OXIDATIVE STRESS

2018

The free radical theory of ageing provided an intellectual framework for many laboratories working on ageing. However, experimental and clinical evidence showing that high doses of antioxidants did not have an effect on ageing or on age-associated diseases, cast doubts on the validity of this theory. Data from our own laboratory showed that oxidative stress does not correlate with age, especially in the geriatric population, but rather with the frailty state. This has led us to postulate the free radical theory of frailty in which frailty is associated with oxidative stress, but age itself is not. Superoxide dismutase deficient mice are more frail than controls. But more importantly, we obs…

INVESTIGATING OLDER ADULTS’ INTENTION TO USE SMARTPHONES WITH A STRUCTURAL EQUATION MODELING APPROACH

2018

Although the uptake of smartphones amongst older adults has recently taken off, the proportion of feature phone users in this population group is still prevailing. Thus, drawing on the senior technology acceptance model (STAM) and the diffusion of innovation theory (DIT) this study aimed to investigate what personal and contextual factors affect the adoption of smartphones among older adults. A telephone survey on a nation-wide representative sample of older adults aged 55+ (n = 1581) was conducted, measuring eight STAM and DIT factors (e.g., perceived usefulness, resistance to change, mobile phone anxiety) of behavioral intention to use smartphones. Using confirmatory factor analysis and s…

WHY CENTENARIANS ARE SO OPTIMISTIC ABOUT THE FUTURE?

2018

People living longer lives report that they are “making the most of it” reflecting a realistic and optimistic approach to life. This adaptive attitude among the oldest-old challenges the model of inevitable health and functional limitations expected at the end of life. However, researchers find that centenarians report good health, gratitude, enjoyment of life and feel optimistic about the future. Using data from a sample of 68 urban nonagenarians and centenarians in the city of Valencia in Spain (Age range 90–105, Mean= 96; SD= 3.93), we report on the associations between the participants’ cognitive dispositions and their level of life satisfaction while controlling by predisposing factors…