361 research outputs found
Wave-front phase retrieval in transmission electron microscopy via ptychography
No full textThere are many different strategies that allow the solving of the well-known phase problem corresponding to the loss of phase information during a physical measurement. In microscopy, and, in particular, in transmission electron microscopy, most of these strategies focus on the retrieval of high-resolution information with the importance of lower resolution data often overlooked. Ptychography offers a means to investigate such data. Ptychography is a robust diffractive imaging technique with fast convergence for phase retrieval but, until now, has not been applied at the nanoscale. In this paper, we use the ptychographical iterative engine to retrieve the phase change at the exit plane of metallic nanoparticles using a conventional transmission electron microscope. Ptychographical reconstructions yielded images with a phase resolution of π/10 and a spatial resolution of 1 nm. These results stand as a first step toward aberration-free lensless imaging. The technique lends itself to be an alternative to off-axis electron holography or focal series reconstructio
La cosmétologie à travers les âges
No full textDie Kosmetologie im Laufe der Zeit.
Die Verfasserin gibt eine kurze Übersicht der Kosmetologie vom alten Aegypten an bis zum 19. Jahrhundert.Cosmetology across the ages.
The author paints a quick sketch of cosmetology from Ancient Egypt to the 19th century.de Roeck-Holtzhauer Yannick. La cosmétologie à travers les âges. In: Revue d'histoire de la pharmacie, 76ᵉ année, n°279, 1988. pp. 397-399
Révisions transatlantiques : une expérience de télécollaboration entre l’Université Ca’ Foscari et Bentley University
No full textThe aim of this work is to present the ins and outs of a telecollaboration project between an American university (Bentley University) and Ca\u27 Foscari University. This project targets oral production and revision skills around an authentic language object, the video CV. Between March and April 2021, the author and a colleague from Bentley University set up a collaborative video CV revision project between 10 American FLE students and 13 students from Ca\u27 Foscari University of Venice, Italy (CEFR level B1-B2 for both groups). After a preparation phase started in December 2020 on both sides of the Atlantic, the device was implemented with work phases in synchronous and asynchronous modality. First, we will provide a theoretical framework concerning the use of telecollaboration mediated by computer for didactics of French as a foreign language. Then, we will go into more detail on the organisation, the setting up of the project and the modalities, the course of the exchanges and the tools used. Finally, we will present the first results obtained through this project and raise some issues about some negative outcomes.L’objectif de ce travail est d’exposer les tenants et aboutissants d’un projet de télécollaboration entre une université américaine (Bentley University) et l’université Ca’ Foscari de Venise. Ce projet vise les compétences de production et de révision orales autour d’un objet langagier authentique, le CV vidéo. Entre Mars et Avril 2021 compris, l’auteur et une collègue de l’université américaine de la Bentley University ont mis en place un projet de révision collaborative de curriculum vitae au format vidéo entre 10 étudiant.es de FLE américains et 13 étudiant.es de l’université Ca’ Foscari (niveau B1-B2 du CECRL). Après une phase de préparation engagée dès décembre 2020 des deux côtés de l’Atlantique, le dispositif a été mis en œuvre avec des phases de travail en modalité synchrone et asynchrone. Dans un premier temps, nous fournirons un cadre théorique concernant le recours à la télécollaboration médiée par ordinateur en didactique du Français Langue Etrangère. Ensuite, nous reviendrons plus en détail sur l’organisation, la mise en place du projet et les modalités, le déroulement des échanges et les outils utilisés. Nous présenterons enfin les premiers résultats obtenus par le biais de ce projet et soulèverons les problématiques qui ressortent de résultats mitigés
Law & Economics Perspectives on Electricity Regulation
Full text linkThis paper first reviews some of the main contributions of the new institutional economics to the analysis of the process of competitive transformation of network industries. It shows that neoinstitutional analysis is complementary to the microeconomics of rational pricing, since it accounts for the decisive role of an institutional framework adapted to new transactions. It emphasizes the importance of the political reform process, which draws on the conditions of attractiveness and feasibility to define an initial reorganization of property rights in these industries. The paper then analyzes in this light some of the main challenges ahead for electricity regulation: the question of investment in generation capacities and the link to long term contracts, the regulation of wholesale market power, the support to Renewable Energy Sources for Electricity (RES-E) and the design of new regulatory authorities.Electricity Markets; New Institutional Economics; Law & Economics
« Notte pour faire la pomade pour plusieurs maux » ou la recette d'un guérisseur vendéen
No full text« Notiz zur Bereitung der Salbe für mehrere Gebrechen » oder das Rezept eines Heilkunstlers aus der Vendée.
Der Verfasser untersucht die Zusammensetzung der Formel eines Empirikers aus der Vendée in der zweiten Hälfte des 19. Jahrhunderts fur Flechten, Brandwunden, Frostbeulen und Hamorrhoiden. Er ziecht daraus den Schluss auf Stichhaltigkeit dieser Formel welche der damaligen gebrauchten Polytherapie entspricht.« Notes on How to Make the Pommade for Several Illnesses » or the recipe of a healer from Vendée.
The author examines the composition of a formula from an empiric of Vendée, from the second half of the 19th century, for skin eruptions, burns, chilblains and hemorrhoids. He concludes that the components of the formula are valid, and conform to the polytherapy in use at that time.Romieux Yannick. « Notte pour faire la pomade pour plusieurs maux » ou la recette d'un guérisseur vendéen. In: Revue d'histoire de la pharmacie, 78ᵉ année, n°287, 1990. pp. 449-452
Toucher au plus vivant. Poétique et politique de l’amour dans 'Je cherche l’Italie' de Yannick Haenel
Full text linkÀ travers une lecture du roman 'Je cherche l’Italie' (2015) de Yannick Haenel est soulignée la manière toute singulière suivant laquelle la littérature (le poétique) permet d’étendre la compréhension que l’on se fait habituellement du politique, la plupart du temps réduit à une lutte pour la conquête d’un pouvoir de l’État ou dans l’État, à l’organisation des pouvoirs ou à un art/exercice de gouverner. Il s’agit ainsi de mettre en lumière la façon dont l’écrivain français, par son récit, fait de l’amour, qui a été peu à peu relégué au cercle intime, le cœur d’une possible reconfiguration du politique au sein de la société occidentale contemporaine en crise(s) et comment Haenel établit l’amour en tant que principe politique solide et déterminant pouvant venir revitaliser voire restructurer anarchiquement le vivre ensemble.Throughout a focused reading of Yannick Haenel’s novel Je cherche l’Italie (2015) is underlined the incongruous ability of literature (the poetics) to extend usual understanding of politics, which is often reduced to a conquest of power by the State or in the State, the organization of power(s) or the art (practice) of governing. This article aims to highlight the way the French author puts love, which was gradually relegated to the intimate sphere, at the heart of a possible reconfiguration of politics in the crisis-stricken contemporary western society. It shows how Haenel establishes love as a strong and decisive political principle that could revitalize or even restructure anarchically the vivre ensemble
Causes and consequences of mitotic DNA damage
Full text linkIn order to divide, a cell has to successfully duplicate its DNA during S-phase, followed by the division of genomic content during mitosis. Faithful cell division in cancer cells can be challenged in various ways. First, an increase in the formation of DNA lesions can challenge correct DNA duplication, for instance, due to oncogene overexpression or the inability to resolve DNA lesions due to defective DNA repair mechanisms. Second, the faithful division of genomic content over the emerging daughter cells can be impaired due to mitotic aberrations. The overall aim of this thesis was to dissect the mechanisms by which replication-born DNA lesions affect mitotic behavior of cancer cells, to ultimately improve treatment of genomically instable cancers. We describe how replication-born DNA lesions induced by BRCA1/2 inactivation combined with PARP and ATR inhibitor treatment affect mitotic behavior. We show that ATR inhibition potentiates PARP inhibitor treatment in homologous recombination-deficient cells, which was related to the role of ATR in regulating cell cycle control. Furthermore, we studied how overexpression of the CCNE1 oncogene (encoding Cyclin E1) affects mitotic behavior. We found that overexpression of Cyclin E1 caused mitotic aberrancies, which could be exacerbated by the inhibition of the G2/M checkpoint kinases ATR or WEE1. Moreover, we found Cyclin E1 overexpression to result in the activation of RAD52-dependent Mitotic DNA synthesis (MiDAS) pathway. Inhibition of the MiDAS pathway resulted in an increase in residual DNA damage following mitosis, implicating a possible crucial role for MiDAS in dealing with increased levels of DNA lesions in mitosis
D'un pot de pharmacie à la vie d'une famille de pharmaciens vendéens
No full textVon einem Apotheken-Gefäss zur Lebensskizze einer Apotheker-Familie aus der Vendée.
Um einen Salbentopf aus Faience von Creil und Montereau zu datieren und den Apotheker auszumachen dessen Name und Adresse auf dem Gefäss figuriert, sieht sich der Verfasser veranlasst das Leben von François Chassant (1804-1883), Apotheker in La Roche-sur-Yon, aufzuzeichnen. Sein Sohn Auguste wurde sein Nachfolger. Der Topf kann um 1849-1852 datiert werden.From a pharmacy jar to the life of a family of pharmacists from the Vendée.
In order to date a pommade jar of Creil and Montereau faience, and to identify the pharmacist whose name and address it bears, the author was brought to retrace the life of François Chassant (1804-1883), pharmacist of La Roche-sur-Yon, succeeded by his son Auguste. The pot can be dated from 1849-1852.Romieux Yannick. D'un pot de pharmacie à la vie d'une famille de pharmaciens vendéens. In: Revue d'histoire de la pharmacie, 75ᵉ année, n°272, 1987. pp. 57-64
On the choice of the mesh for the analysis of geostatistical data using R-INLA
No full textMany methods used in spatial statistics are computationally demanding, and so, the development of more computationally efficient methods has received attention. A important development is the integrated nested Laplace approximation method which is carry out Bayesian analysis more efficiently This method, for geostatistical data, is done considering the SPDE approach that requires the creation of a mesh overlying the study area and all the obtained results depend on it. The impact of the mesh on inference and prediction is investigated through simulations. As there is no formal procedure to specify it, we investigate a guideline to create an optimal mesh.The first author acknowledge the financial support of the "Ciencia sem Fronteiras" program of CNPq (Brazil) under the process number 200573/2015-2. Support from the IAP Research Network P7/06 of the Belgian State (Belgian Science Policy) is also gratefully acknowledged by the second and third author.Ribeiro, PJ (reprint author), Univ Sao Paulo, Dept Ciencias Exatas, BR-13418900 Piracicaba, SP, Brazil.
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