3,118 research outputs found

    Changes in the fine root proteome of Fagus sylvatica L. trees associated with P-deficiency and amelioration of P-deficiency

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    Phosphorus is often the least available macronutrient in soil. Lack in phosphorus has detrimental effect on growth and biomass production of European Fagus sylvatica L., a major trees species in temperate forests. In contrast to leaf tissues, few studies have examined changes in the root system and no study has ever investigated the proteomic changes affected in beech roots by a lack in available phosphate (P). Here, we studied roots of young Fagus sylvatica L. trees in their native soils from two forests sites with contrasting availability of P: one P rich and P poor soil. To understand also the response to P fertilization, the trees were fertilized with triple superphosphate and the proteome of fine roots of all conditions was compared. Gel-free mass-spectrometry-based shotgun proteomics revealed that the proteome was differentially affected by diverging P availabilities. The proteomic changes that took place as the result of P fertilization were dependent on the supply level of P before the fertilization. When P was supplied to the P-rich soil proteins related to cell biogenesis exhibited increased abundances. Addition of P to soil that was strongly limited in P resulted in increased abundance of proteins associated with amino acid metabolism and transport.sponsorship: The authors are grateful to M. Smiatacz and M. Franke-Klein for maintenance of the plants and help during the harvest, Kusay Arat for technical assistance at Sybioma. The Cooperation europeenne dans le domaine de la recherche scientifique et technique is acknowledged for granting a STSM scholarship to Dr. Christoph-Martin Geilfus (Action FA1306) and the Deutsche Forschungsgemeinschaft for the supporting this research by a grant to A. Polle (P0362/22-2) in the Program "Ecosystem nutrition" (SPP 1685). (Cooperation europeenne dans le domaine de la recherche scientifique et technique|Action FA1306, Deutsche Forschungsgemeinschaft|P0362/22-2, Deutsche Forschungsgemeinschaft|SPP 1685)status: Publishe

    Can we simply infer mitochondrial function from PCr resynthesis after exercise in skeletal muscle?

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    Ratel, Sebastien Martin, Vincent Tonson, Anne Cozzone, Patrick J Bendahan, David Comment Letter United States Pediatric research Pediatr Res. 2012 Aug;72(2):221. doi: 10.1038/pr.2012.67

    Skeletal muscle mitochondrial function cannot be properly inferred from PCr resynthesis without taking pH changes into account

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    Ratel, Sebastien Martin, Vincent Tonson, Anne Cozzone, Patrick J Bendahan, David Comment Letter Netherlands Magnetic resonance imaging Magn Reson Imaging. 2012 Dec;30(10):1542-3. doi: 10.1016/j.mri.2012.06.017. Epub 2012 Aug 13

    Sebastien Rale vs. New England: A Case Study of Frontier Conflict

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    Author\u27s original abstract: A study was made of the Jesuit missionary, Sebastien Rale, and his role in New England-New France relations. French and English primary and secondary materials were examined to give the broadest possible view of the man and to place him in historical context. It was found that Sebastien Rale was not an agent of New France. The conflicting opinions surrounding the mission of Norridgewock and the border war of the 1720\u27s were traced to the problems of Massachusetts-Abnaki relations. Rale\u27s frequent and testy letters to the government of the Bay Colony were blunt reactions to what he viewed as religious and territorial threats against his mission. The frontier conflict between 1713 and 1722 was not the result of French Imperial policy. The French insisted that the Abnakis were allies but refused active participation in the Indians\u27 quarrel with New England. Policy was developed in Maine by the Jesuits. The missionaries were only secondarily interested in Quebec\u27s desire to prevent Massachusetts\u27 settlement of the Kennebec. With the declaration of war in July, 1722, however, the Jesuits left the Abnakis in the hands of the governor and the intendant of New France on whom the Indians relied for vital war supplies. Finally, the controversial attack on Norridgewock was appraised. It was found that no secondary account had fully evaluated the sources. Examination led to the discovery of crucial inconsistencies in the primary accounts of New England. The French sources were found to be based on the understandably confused impressions of the fleeing Indians. In large measure the English sources present the more valid picture: the sudden attack, the panicked confusion, and Sebastien Rale dying with gun in hand. After Rale\u27s death the war drew to a close. Without Sebastien Rale\u27s persuasion and determination, the Abnakis were not able to present a united front against colonial expansion

    Steve J. Chavez recital thesis 2012

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    Thesis (M.M.) California State University, Los Angeles, 2012Committee members: Sebastien Vallee, Jeffrey Benedict, John KennedyThe musical selections from this Master recital were not chosen with a specific theme in mind, rather each selection was carefully selected to represent the requisite musical styles stemming from the 18th to 20th century.All the literature was selected based on the requirements of the music department representing the technical skill level worthy of a graduate student from the institution of California State University, Los Angeles. This written project is the presentation of historical and musical research gathered by this author in preparation for this recital. The selections of Bach, Handel, Beethoven, Schubert, Faure, Menotti, Hoiby, and Barber are discussed in turn

    De Viejas postales y nuevos paisajes. Noticias sobre aguas y agronegocios

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    La sociedad mendocina ha tenido, sino una "cultura del agua", muy estrechas relaciones con ella. Fuertes marcas de identidad y memoria social están asentadas en paisajes hídricos y vitivinícolas, más o menos estereotipados: viñas y surcos en perspectiva, montañas nevadas, limpios canales, compuertas precisas, diques colmados. El concepto de "sociedad hídrica", acuñado por el historiador ambiental Donald Worster, tiene especial relevancia para comprender, algo que ya ha señalado Elma Montaña, cómo la sociedad mendocina se integró y fragmentó históricamente a partir del manejo intencionado o político del agua. Pero dichas relaciones entre sociedad y agua han cambiado radicalmente al ritmo de crisis y ciclos económicos y culturales. Si el modelo centenario vitivinícola, en términos de Ana Mateu, integró, mal o bien, a miles de familias de contratistas y trabajadores rurales, hoy el llamado modelo de agronegocios, siguiendo a Carla Gras y Valeria Hernández, tiende a desincorporar los vestigios de aquel "labriego tesonero" así como a los obreros rurales que forjaron esos paisajes de riqueza.Fil: Martin, Facundo Damian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Larsimont, Robin Sebastien. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; Argentin

    Considerations sur l'ordre de Cincinnatus, [electronic resource] : ou imitation d'un pamphlet anglo-americain. Par le comte de Mirabeau. Suivies de plusieurs pieces relatives a cette institution; ... d'un pamphlet du Docteur Price, intitule: Observations on the importance of the American Revolution, ...

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    Sebastien Roch Nicholas Chamfort is given as joint author by Querard and Barbier.A reissue of the 1784 Londres edition, with a different title-page.Sig. H1 is a cancel - The 'Avis' is dated: Londres, 20 septembre, 1784.Printer's name from colophon.Electronic reproduction.English Short Title Catalog,Reproduction of original from British Library

    Limit Theorem for a Modified Leland Hedging Strategy under Constant Transaction Costs rate

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    We study the Leland model for hedging portfolios in the presence of a constant proportional transaction costs coefficient. The modified Leland's strategy recently defined by the second author, contrarily to the classical one, ensures the asymptotic replication of a large class of payoff. In this setting, we prove a limit theorem for the deviation between the real portfolio and the payoff. As Pergamenshchikov did in the framework of the usual Leland's strategy, we identify the rate of convergence and the associated limit distribution. This rate turns out to be improved using the modified strategy and non periodic revision dates.Asymptotic hedging ; Leland-Lott strategy ; Transaction costs ; Martingale limit theorem.

    Going Serverless with Knative on Kubernetes

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    Abstract: After reviewing some of the latest evolutions in Kubernetes we will discuss the serverless computing paradigm and highlight a few application use-cases. We will then introduce Knative, a system built on top of Kubernetes which provides components to build and serve applications as well as manage events. Through quick demos will demonstrate several key capabilities like scaling to zero and also highlight future directions with service mesh technologies. Bio: Sebastien is the co-founder of TriggerMesh (https://triggermesh.com) a serverless management platform built on Knative. He is the author of the Docker and Kubernetes O'Reilly cookbooks and was the CMS Tier-2 site lead at Purdue University more than 10 years ago
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