1,247 research outputs found
Monitoring des régimes thermiques des sols en montagne. Expériences alpines actuelles.
No full textRecording the temporal and spatial (in three-dimension) changes in soil temperatures is not new. It is part of a long scientific tradition. The interest of monitoring the thermal regimes of soils today for questions of plant ecology but also for understanding the dynamics of storage/ release of soil organic matter is presented here in particular in mountain areas. After a brief presentation of the current techniques for monitoring these temperature regimes in soils (material, operational difficulties ...), the article presents some current alpine experiments of network of measurement of these regimes.L’enregistrement des évolutions temporelles et spatiales des températures des sols n’est pas une nouveauté. Il s’inscrit dans une longue tradition scientifique. Le suivi des régimes thermiques des sols apporte des éléments de réponse à des questions d’écologie végétale, mais permet aussi de mieux comprendre les dynamiques de stockage/ déstockage des matières organiques, en particulier en zone de montagne. Après une courte présentation des techniques de monitoring, l’étude de ces rédimes de températures dans les sols (matériel, difficultés opérationnelles) est illustrée par quelques expériences alpines en cours dans les Hautes-Alpes (vallon de Roche Noire) , en haute Tarentaise (profils de Bourg-Saint-Maurice) et dans le haut Faucigny (bassin versant du lac d’Anterne).Poulenard Jerôme, Choler Philippe, Malet Emmanuel. Monitoring des régimes thermiques des sols en montagne. Expériences alpines actuelles. In: Collection EDYTEM. Cahiers de géographie, numéro 19, 2017. Monitoring en milieux naturels. Retours d’expériences en terrains difficiles. pp. 279-290
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Episode #7: Philippe Sands, From Genocide to Ecocide
No full textThis special episode of Borderlines features influential educator, commentator, and litigator Philippe Sands discussing ground-breaking efforts to introduce ecocide – the crime of environmental destruction – into international legal arenas. Philippe Sands QC is Professor of Law at University College London, Pisar Visiting Professor of Law at Harvard, and a barrister at Matrix Chambers. He practises as Counsel before international courts and tribunals. His teaching areas include public international law, the settlement of international disputes including arbitration, and environmental and natural resources law. Philippe is the author of many books, including East West Street: On the Origins of Crimes Against Humanity and Genocide (2016) and The Last Colony, forthcoming in September 2022. Philippe recently co-chaired an independent expert panel which proposed in June 2021 that a new, fifth crime of ecocide be adopted into the Rome Statute of the International Criminal Court. In Episode Seven of Borderlines, listeners will learn about the relationship between ecocide and existing crimes, historic legal and political definitions of genocide being played out today, and the role of courts in enforcing awards and judgments against even Goliath polluters and aggressors. Borderlines from Berkeley Law is a podcast about global problems in a world fragmented by national borders. Our host is Katerina Linos, Tragen Professor of International Law and co-director of the Miller Institute for Global Challenges and the Law. </p
The sensitivity of the small-scale vascular plant species distribution in snowbeds to climate change
No full textM. Patrick Graham & Steven L. McKenzie (ed.), The Chronicler as Author. Studies in Text and Texture, Sheffield, Sheffield Academic Press, 1999, (Journal for the Study of the Old Testament, Supplement Series, 263), ISBN 1-84127-057-1
No full textRobert Philippe de. M. Patrick Graham & Steven L. McKenzie (ed.), The Chronicler as Author. Studies in Text and Texture, Sheffield, Sheffield Academic Press, 1999, (Journal for the Study of the Old Testament, Supplement Series, 263), ISBN 1-84127-057-1. In: Revue d'histoire et de philosophie religieuses, 80e année n°2, Avril-juin 2000. p. 297
No change in the balance between competition and facilitation along an alpine stress gradient
No full text« N’HÉSITEZ PAS À JOUER LA CARTE DE L’HISTOIRE VÉCUE » : Les demi-teintes de l’autobiographie dans Tuer Vélasquez de Philippe Girard
No full textDécrit comme un récit autobiographique par sa quatrième de couverture, Tuer
Vélasquez (2009) de Philippe Girard rapporte une situation d’abus sexuel par un prêtre
dont l’auteur a été témoin en 1983. L’écriture de soi se manifeste toutefois plutôt
discrètement dans cet ouvrage, qui, en l’absence de récitatifs, expose la subjectivité du
personnage de Philippe de manière oblique par un réseau de renvois à l’art (grâce aux
références à Vélasquez et à Picasso), au folklore (par le rappel de la légende de la
chasse-galerie) et à l’influence des livres (à travers les romans d’aventures pour
adolescents). On a ainsi l’impression que, à rebours de l’employé de la télévision qui, au
début du récit, enjoint à son collègue de ne pas hésiter « à jouer la carte de l’histoire
vécue » (p. 16) en donnant la parole à l’une des victimes du prêtre pédophile, l’auteur a
refusé de s’engager à fond dans la veine autobiographique ; il semble avoir voulu employer
le témoignage simplement pour authentifier un matériel narratif dont la richesse et la
complexité font probablement de cet ouvrage la réalisation la plus achevée de Girard. C’est
à cet aspect de l’oeuvre que cet article s’intéresse.Described as autobiographical on the back cover, Philippe Girard’s Tuer
Vélasquez (2009) describes an episode of sexual abuse by a priest that was witnessed by
the author in 1983. The author’s writing about himself, however, is rather discreet in this
work, which—in the absence of recitatives—presents the subjectivity of Philippe’s character
in an oblique manner, through a network of references to art (Vélasquez, Picasso), folklore
(the legend of the chasse-galerie), and the influence of books (adventure novels
for young readers). This creates the impression that, notwithstanding the comment of the TV
employee who, at the beginning of the narrative, urges his colleague not to hesitate to
“play the personal experience card” (p. 16) by giving voice to one of the victims of the
pedophile priest, the author has chosen not to go full out in the autobiographical vein;
rather, he seems to have used the witness’s account simply to authenticate a narrative
material whose richness and complexity probably make this Girard’s most accomplished work.
The article focuses on this aspect of the work.Descrito como un relato autobiográfico en su cuarto título, Tuer Vélasquez
(Matar a Velázquez) (2009), de Philippe Girard, informa sobre una situación de
abuso sexual por parte de un sacerdote, del cual fue testigo el autor en 1983. Sin embargo,
la escritura de sí mismo se manifiesta más bien discretamente en esta obra que, en ausencia
de recitativos, expone la subjetividad del personaje de Philippe de forma oblicua mediante
una red de llamadas al arte (gracias a las referencias a Velázquez y a Picasso), al folclore
(por la llamada a la leyenda de la chasse-galerie) y a la influencia de los libros (a través
de las novelas de aventuras para adolescentes). Así pues, uno tiene la impresión de que, a
la inversa de las palabras del empleado de la televisión que, al principio del relato,
ordenó a su colega que no dudase en “jugar la carta de la historia vivida” (p. 16), dando
la palabra a una de las víctimas del cura pedófilo, el autor se negó a entrar a fondo en la
vena autobiográfica; parece que haya querido utilizar el testimonio simplemente para
autentificar un material narrativo cuya riqueza y complejidad hace probablemente que esta
obra fuese la realización más consumada de Girard. Este artículo se interesa por este
aspecto de la obra
An economic analysis of the production of hydrogen from wind-generated electricity for use in transport applications
No full textWind-generated electricity is often considered a particularly promising option for producing hydrogen from renewable energy sources. However, the economic performances of such systems generally remain unclear because of unspecified or favorable assumptions and operating conditions. The aim of this paper is to clarify these conditions by examining how the hydrogen produced is used. The analysis that has been conducted in the framework of the HyFrance 3 project concerns hydrogen for transport applications. Different technical systems are considered such as motorway hydrogen filling stations, Hythane®-fueled buses or second-generation biofuels production, which present contrasted hydrogen use characteristics. This analysis reveals considerable variations in hydrogen production costs depending on the demand profiles concerned, with the most favorable configurations being those in which storage systems are kept to a minimum.wind power ; hydrogen production
Soil and meteorological data, and finite element simulation framework for heat transfer through shrubs in winter near Lautaret pass, French Alps
No full textThe data allow the calculation using finite element modeling of heat transfer through shrub branches and snow between the atmosphere and the soil. The shrubs are green alders (Alnus viridis). The site where they are found is called Alnus-Nivus (45.034750°N, 6.413630°E, 2034 m asl) near Col du Lautaret, French Alps. The soil data consist in temperature and volumetric liquid water content at 5 and 15 cm depths. One spot is near the alder collar (ALNUS), the other spot is 6 m away, under grass (GRASS).
The meteorological data were obtained from the FR-Clt station, 750 m away (45.041278°N, 6.410611°E, 2046 m asl). See (Gupta et al., 2023) for details. Only the data relevant for heat transfer simulations are given.
The simulation framework gives the alder mesh used in the heat transfer simulations. Typical simulations use a wood thermal conductivity of 1 W m-1 K-1 and a snow thermal conductivity of 0.1 W m-1 K-1. Based on observations, the snow height at Alnus-Nivus is likely to be at least twice the value at FR-Clt. Forcing uses the snow surface temperature, derived from upwelling longwave radiation using an emissivity of 1. The data allow testing thermal bridging through shrub branches. These data are used in a publication in preparation: Domine, Fourteau, Choler, Exploration of Thermal Bridging Through Shrub Branches in Alpine Snow.
Reference
Gupta, A., Reverdy, A., Cohard, J. M., Hector, B., Descloitres, M., Vandervaere, J. P., Coulaud, C., Biron, R., Liger, L., Maxwell, R., Valay, J. G., and Voisin, D.: Impact of distributed meteorological forcing on simulated snow cover and hydrological fluxes over a mid-elevation alpine micro-scale catchment, Hydrol. Earth Syst. Sci., 27, 191-212, 2023
Species distribution and aggregation/segregation patterns along a snowmelt gradient in snowbeds
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