Search results for "REY"
showing 10 items of 639 documents
Effects of Biochar Addition on Rill Flow Resistance
2021
The development of rills on a hillslope whose soil is amended by biochar remains a topic to be developed. A theoretical rill flow resistance equation, obtained by the integration of a power velocity distribution, was assessed using available measurements at plot scale with a biochar added soil. The biochar was incorporated and mixed with the arable soil using a biochar content BC of 6 and 12 kg m−2. The developed analysis demonstrated that an accurate estimate of the velocity profile parameter Гv can be obtained by the proposed power equation using an exponent e of the Reynolds number which decreases for increasing BC values. This result pointed out that the increase of biochar content dump…
L'institut d'histoire des sciences
2016
International audience; L'article retrace l'histoire de l'Institut d'histoire des sciences de 1932 à 2001. Sont successivement décrits: (1) l'épisode de fondation comme "Institut d'université" à l'Université de Paris; (2) les origines, les enjeux, le contexte de cette création (institutionnalisation de l'histoire des sciences à l'échelle internationale, et puissant mouvement en France en faveur de l'enseignement de l'histoire des sciences dans les lycées), de 1832 à 1932; (3) la période marquée par la direction d'Abel Rey, fondateur (1932-1940); la direction de Gaston Bachelard (1940-1955); la direction de Georges Canguilhem, marquée par un développement sans précédent de l'enseignement, ma…
Transitioning from adolescence to adulthood for young people living with cerebral palsy : a meta-ethnography
2020
Transitioning from adolescence to adulthood appears to be a challenging period for young people living with cerebral palsy. The aim of this review was to highlight the challenges that might be experienced during this period. A systematic search of the literature and meta-ethnographic review examined seven qualitative research papers providing a detailed synthesis in the form of three domains summarised as ‘meaningful preparation for transition’, ‘becoming empowered’, and, ‘overcoming vulnerability’. These inform a discussion which shows that adolescents living with cerebral palsy are not prepared adequately for adult life. Examination of the literature stimulates curiosity as to the nature …
P2‐310: MIDLIFE SELF‐RATED HEALTH AND FITNESS IN RELATION TO WHITE MATTER LESIONS AND GREY MATTER VOLUME 20 YEARS LATER
2014
Midlife self-rated health and fitness in relation to white matter lesions and grey matter volume 20 years later
Aerobic fitness, but not physical activity, is associated with grey matter volume in adolescents.
2019
Higher levels of aerobic fitness and physical activity are linked to beneficial effects on brain health, especially in older adults. The generalizability of these earlier results to young individuals is not straightforward, because physiological responses (such as cardiovascular responses) to exercise may depend on age. Earlier studies have mostly focused on the effects of either physical activity or aerobic fitness on the brain. Yet, while physical activity indicates the amount of activity, aerobic fitness is an adaptive state or attribute that an individual has or achieves. Here, by measuring both physical activity and aerobic fitness in the same study, we aimed to differentiate the assoc…
Correlates of Sedentary Behaviour in Adults with Intellectual Disabilities—A Systematic Review
2018
Individuals with intellectual disabilities (ID) are at high risk for high levels of sedentary behaviour. To inform the development of programmes to reduce sedentary behaviour, insight into the correlates is needed. Therefore, the aim of this study is to review the evidence on correlates of sedentary behaviour in adults with ID. We performed a systematic literature search in Ovid Medline, Ovid Embase, Web of Science and Google Scholar up to 19 January 2018, resulting in nine included studies that were published from 2011 to 2018. Correlates were categorized according to the ecological model. Studies predominantly focused on individual level correlates. Of those correlates studied in more tha…
Generalist invasion in a complex lake food web
2023
Invasive species constitute a threat not only to native populations but also to the structure and functioning of entire food webs. Despite being considered as a global problem, only a small number of studies have quantitatively predicted the food web-level consequences of invasions. Here, we use an allometric trophic network model parameterized using empirical data on species body masses and feeding interactions to predict the effects of a possible invasion of Amur sleeper (Perccottus glenii), on a well-studied lake ecosystem. We show that the modeled establishment of Amur sleeper decreased the biomasses o ftop predator fishes by about 10%–19%. These reductions were largely explained by inc…
La fortuna del capitello ionico nella Gortina imperiale: i modelli microasiatici e le rielaborazioni in marmo grigio locale
2020
Le indagini archeologiche nella città di Gortina hanno riportato in luce alcuni capitelli ionici di modello microasiatico in marmo importato, databili alla seconda metà del II sec. d.C., ma anche un gran numero di capitelli ionici in marmo grigio locale, con ogni evidenza prodotti in loco tra la fine del II e gli inizi del III sec. d.C. Si tratta di membrature riutilizzate in edifici più tardi e spesso reimpiegate come materiale da costruzione o rifunzionalizzate in vari modi. La loro relativa abbondanza, per alcuni versi insolita, testimonia non solo la peculiare fortuna del tipo nella capitale cretese, ma anche la grande attività degli atelier di scalpellini locali, almeno a partire dalla…
Climate change and cyclic predator-prey population dynamics in the high Arctic.
2009
The high Arctic has the world's simplest terrestrial vertebrate predator–prey community, with the collared lemming being the single main prey of four predators, the snowy owl, the Arctic fox, the long-tailed skua, and the stoat. Using a 20-year-long time series of population densities for the five species and a dynamic model that has been previously parameterized for northeast Greenland, we analyzed the population and community level consequences of the ongoing and predicted climate change. Species' responses to climate change are complex, because in addition to the direct effects of climate change, which vary depending on species' life histories, species are also affected indirectly due to…
Grey Heron Ardea cinerea (N. 5); Little Egret Egretta garzetta (N. 6); Little Ringed Plover Charadrius dubius (N. 7); Temminck’s Stint Calidris temmi…
2019
Grey Heron Ardea cinerea; Little Egret Egretta garzetta; Little Ringed Plover Charadrius dubius; Temminck’s Stint Calidris temminckii; Barn Owl Tyto alba.