387 research outputs found
Description, characterisation and contribution of the grape microbiota to the ‘fresh mushroom' aroma occurence in wine
No full textEn dépit de son rôle important dans la qualité des vins, le microbiote de la baie de raisin, en particulier sa composante fongique n’a jusqu’à présent été que partiellement décrit, notamment sur les cépages Meunier et Pinot noir. De plus, certains micro-organismes peuvent être à l’origine de déviations organoleptiques dans le vin comme l’arôme champignon frais (ACF), surtout perceptible en fin de fermentation. Or, les mécanismes et conditions favorisant son développement restaient encore largement méconnus. Dans ce contexte, ce travail visait à (i) étudier la diversité et la dynamique du mycobiote de la vigne au vin à travers des approches culture-dépendantes et -indépendantes au cours de 2 millésimes et sur 31 parcelles, (ii) déterminer les acteurs microbiologiques associés à l’apparition de l'ACF dans le vin et (iii) évaluer au laboratoire les paramètres biotiques ou abiotiques favorisant son apparition. Cette étude a permis de décrire la dynamique et la diversité du mycobiote au cours de la maturation des baies ainsi que dans les moûts et les vins. Les conditions météorologiques et le vignoble ont fortement contribué à structurer le mycobiote tandis que le cépage avait un effet moindre. Les microvinifications de 2021 ont révélé que des genres fongiques tels que Penicillium étaient potentiellement impliqués dans l’ACF. Enfin, l'effet de la température et du pH sur la croissance d'espèces produisant des défauts organoleptiques a été évalué et la description de leur volatilome sur raisins et dans les moûts a mis en évidence que les interactions entre espèces à risque pouvaient augmenter la détection du défaut ACF.Grape berry microbiota, especially its fungal component, plays an important role in wine quality. However, it has only been partially described for some grape varieties including Meunier and Pinot Noir. Some microorganisms may cause organoleptic defects in wine such as fresh mushroom aroma (FMA). This defect is usually perceptible at the end of fermentation and the mechanisms and conditions favouring FMA development remain largely unknown. In this context, the aim of this study was to (i) determine mycobiota diversity and dynamics from vine to wine using complementary culture-dependent and -independent approaches for two vintages, (ii) identify microbiological actors associated with the FMA defect in wine, and (iii) evaluate, in laboratory conditions, the biotic or abiotic parameters that favour FMA. Mycobiota diversity and dynamics was described throughout grape berry development as well as in musts and wines. Weather conditions and vineyards influenced mycobiota composition whereas grape variety had minimal effect. Microvinifications conducted in 2021 indicated the potential involvement of fungal genera such as Penicillium in the FMA defect. Finally, the impact of temperature and pH on the growth of species linked to FMA was evaluated. The volatilomes of these species were also determined after growth alone or in co-inoculation on grapes and in musts. Altogether, our results showed that interactions between species can enhance the FMA defect
Law & Economics Perspectives on Electricity Regulation
No full textThis 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
multi-user sessions materials
No full textSome of the materials recorded during the multi-user collaborative sessions
Credits
Timelapses:
3-tangra_concept_2.mp4 : Tanguy, Clémence
10-paper_summit.mp4: Softyoda, Laurent, Ultr-X, Ikxi, Swann // image reference author: Thomas Gugel
13-all_seing_monolith.mp4: Softyoda, Wuaieyo, Staz, Swann // image reference author: Stuart Wade
14-campsite.mp4: NotFood, Staz, Wuaieyo, Swann // image reference author: Mohamed Chahin
18-surreal_architecture.mp4: Staz, NotFood, Softyoda, Wuaieyo, Oenvoyage, Spacefarer, Tianerad, Fabian, Yoyodespin, Swann // image reference author: Michiel Schrijver
19-abstract_city.mp4: Adrien, Tanguy, Bruno, Gorgio, Axel // image reference author: Quan Pham Tung
20-scene_sky_island.mp4 : Fabian, NotFood, Wuaieyo, Staz, Swann // image reference author: Péng ái
22-xbox-clubs-image.mp4 : NotFood, Wuaieyo, Staz, Deajynn, Swann // image reference author: Alex Pushilin
25-castles.mp4 : Softyoda, Fabian, NotFood, Wuaieyo, Swann // image reference author: Timothy J. Reynolds
27-random_house_5.mp4: NotFood, Wuaieyo, Swann // image reference author: Mohamed Chahin
28-wind_mill_in_nemcice.mp4: Wuaieyo, NotFood, Swann // image reference author: Febin_Raj
33-ancient_gods_threshold.mp4 NotFood, Kysios, Wuaieyo, Swann // image reference author: Elodie Mondoloni
Animation projects results:
34-outrun_result.gif: NotFood, Fabian, Wuaieyo, Ultr-X, Swann
35-mstrd_II_result.gif: Tanguy, Gorgio, Adrien // image reference author: gifmk7
36-elmo_result.gif: Gorgio, Fabian, Tanguy, Adrien
(more to come
A PORTRAIT OF ADRIEN PAUW AT THE STROSSMAYER GALLERY
No full textDosada neiddentificirani »Portret muškarca« iz Strossmayerove galerije u Zagrebu (SG-200) autorica otkriva kao portret nizozemskog državnika Adriaena Pauwa (Amsterdam 1585. - Dan Haag 1653.), jednoga od potpisnika Munsterskoga mira (1648.) Komparativnom analizom autorice dokazuje, da među brojnim Pauwovim portretima najjače usporednice vežu zagrebački portret uz »Portret Adriaena Pauwa« Jana Baptista Florisa (oko 1617. - Antwerpen 1655.). Ta je slika nastala po izgubljenom, ali često u grafički medij proširenom Pauwowom portretu Anselmusa van Hullea (1594. - nakon 1668.), a Florisovo se djelo nalazi u Friedenssaal Gradske viječnice u Munsteru.The figure in The Portrait of a Man at the Strossmayer Gallery (SG200) which until now was unnamed is identified by the author as a likeness of the Dutch statesman Adriaen Pauw (1585-1653). As a rich and notable citizen he was the representative of the provinces Holland and West Friesland in talks which put an end to eighty years of war between the Spanish Crown and the Provinces of the Netherlands. Pauw was one of the signatories of the final document of the Munster Treaty (1648). The author suggests that of the numerous surviving portraits of Pauw the greatest likeness with the portrait in Zagreb is that found in The Portrait of Adrien Pauw by Jan Baptista Floris after Anselmus van Hulle (1594-after 1668?) at the City Hall in Munster
Cello techniques and performing practices in the nineteenth and early twentieth centuries
No full textThis thesis comprises a study of cello performance practices throughout the nineteenth century and into the early decades of the twentieth. It is organised in terms of the increasing complexity of the concepts which it examines, as they are to be found in printed and manuscript music, instrumental methods and larger treatises, early recordings, concert reviews and pictures. Basic posture is considered along with different ways of holding the
bow. The development of the tail-pin shows that even when it was widely used, the older posture was still referred to as a model. Some implications for tone quality and tonal
projection are considered in the light of the shape of the arms. Some connections between the cellist's posture and that recommended by etiquette books are explored. The
functionality of the left hand and arm, and the development of modem scale fingerings, show that there was a considerable period of overlap between newer and older practices, with modern scale fingerings evolving over a long period of time. Similarly, views on the function of the right wrist in bowing are shown to change gradually, moving towards a more active upper arm movement with less extreme flexibility of the wrist. Two central expressive techniques especially associated with string playing arc considered in the context of the cello, namely vibrato and portamento. These topics are examined in the light of written indications in music, recommendations in cello treatises, and the practices evidenced in early recordings. The sources for this study can be brought into an overall
framework of a constant dialogue between `theory', as expressed in verbal instructions to the learner, or general a priori reflections about the cello, and `practice', manifested in performing editions and early recordings, or in individual acts of reception. A wide divergence is noted, both between theory and practice in general, and in terms of different styles of playing observable at any one time. It is suggested that tensions between practice
and critical disapproval can be resolved in terms of Lacanian discourse. Several test cases are used in order to compare several different recordings of the same works. The question of the musical character of the cello is discussed in terms of widespread assumptions about its gendered identity. A wide range of sources suggest that this moved from a straightforwardly `masculine' identity expressed through a controlling, elevated eloquence to a less clearly defined one, incorporating the 'feminine', with a greater stress on uninhibited emotional expression. Some performance implications for this change of view are pursued with respect to specific repertoires. Broad conclusions stress the importance of the diversity of performance practices as opposed to unifying generalisations
Matemática no Brasil: as traduções de Manoel Ferreira de Araújo Guimarães (1777-1838) das obras de Adrien Marie Legendre
No full textEste trabalho aborda a vida e a obra de Manoel Ferreira de Araújo Guimarães (1777-1838), personagem importante para o cenário da História da Matemática Brasileira. Centralizamos nosso estudo nas traduções das obras Éleménts de Geométrie e Traité de Trigonométrie de Adrien Marie Legendre (1752-1833), realizadas por Manoel Ferreira de Araújo Guimarães, como contribuições significativas para o processo de institucionalização do ensino da Matemática no Brasil, no início do século XIX. Analisando essas traduções pudemos compreender os motivos que levaram o tradutor a propor alterações e, a partir da identificação de alguns de seus interlocutores, compreender o que o levou aos trabalhos de Adrien Marie Legendre. Relativamente aos desdobramentos das produções de Manoel Ferreira de Araújo Guimarães, pudemos identificar, direta ou indiretamente, alguns nomes que tiveram acesso a suas traduções. Assim, este trabalho pretende contribuir com os pesquisadores que buscam empreender uma (re)leitura do período, que vai do início a meados do século XIX, relativo ao ensino da matemática no BrasilThis thesis addresses the life and works of Manoel Ferreira de Araújo Guimarães (1777-1838), a major author in the History of Brazilian Mathematics. The study centers on the translation by Manoel Ferreira de Araújo Guimarães of Éleménts de Geométrie e Traité de Trigonométrie, written by Adrien Marie Legendre (1752-1833), as important contributions to the process of institutionalizing the teaching of Mathematics in Brazil at the beginning of the 19th century. The analysis of Guimarães´s translations helped shed light on the reasons that led the translator to propose changes and, based on the identification of some of his interlocutors, understand what directed Guimarães to the works of Adrien Marie Legendre. Regarding further works by the Brazilian mathematician, we have been able to identify, directly or indirectly, scholars who had access to his translated works. Therefore, this study is intended to contribute to researchers who seek to (re)study the period ranging from the beginning to the first half of the 19th century, on the teaching of Mathematics in BrazilCoordenação de Aperfeiçoamento de Pessoal de Nível Superio
Éléments de Géométrie, avec Notes. Par Adrien- Marie Legendre. – O que Afirma o Próprio Autor sobre Sua Obra?
No full textThis paper presents a translation of the preface to the first edition of the book “Éléments de Géométrie, avec Notes,” of Adrien-Marie Legendre (1752-1833), published in Paris, 1794, by Firmin Didot. There was a translation into Portuguese of Legendre’s book by Manoel Ferreira de Araujo Guimarães, published in 1809, at the Regia Officina Typografica, in Rio de Janeiro, without the preface. I present and discuss Legendre’s preface, in the year that commemorates two hundred years of the first publication of Legendre’s book in Portuguese. And as we will see, the preface is an answer to the question: What does the own author affirm about his work?
Keywords: Legendre. Textbook. Contents of School Mathematics. History of School Mathematics.Neste artigo, apresento a tradução do prefácio à primeira edição do livro Éléments de Géométrie, avec notes, de Adrien-Marie Legendre (1752-1833), publicado em Paris, 1794, por Firmin Didot. Houve uma tradução em português do texto de Legendre por Manoel Ferreira de Araújo Guimarães, publicada em 1809 pela Regia Officina Typografica, no Rio de Janeiro, mas sem o prefácio. Apresento e discuto o prefácio original escrito por Legendre no ano em que se comemoram os duzentos anos da primeira impressão do seu livro no Brasil. E o prefácio, como veremos, é uma resposta à pergunta – o que afirma o próprio autor sobre sua obra?
Palavras-Chave: Legendre. Livro-texto. Conteúdos da Matemática Escolar. História da Matemática Escolar
L'Alemant, Adrien
No full textInternational audienceAdrien L’Alemant was a doctor, translator and author of medical texts (theoretical and practical) living in Paris in the early sixteenth century
ReproducedPapers.org: Openly Teaching and Structuring Machine Learning Reproducibility
No full textWe present ReproducedPapers.org : an open online repository for teaching and structuring machine learning reproducibility. We evaluate doing a reproduction project among students and the added value of an online reproduction repository among AI researchers. We use anonymous self-assessment surveys and obtained 144 responses. Results suggest that students who do a reproduction project place more value on scientific reproductions and become more critical thinkers. Students and AI researchers agree that our online reproduction repository is valuable.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Pattern Recognition and BioinformaticsMultimedia ComputingComputer Science & Engineering-Teaching TeamInteractive IntelligenceSoftware EngineeringEmbedded SystemsCyber SecurityAlgorithmic
Formation of Methane versus Benzene in the Reactions of (C5Me5)(2)Th(CH3)(2) with [CH3PPh3]X (X=Cl, Br, I) Yielding Thorium-Carbene or Thorium-Ylide Complexes
No full textbibtex: ISI:000412189700021 bibtex\location:'POSTFACH 101161, 69451 WEINHEIM, GERMANY',publisher:'WILEY-V C H VERLAG GMBH',type:'Article',affiliation:'Walensky, JR (Reprint Author), Univ Missouri, Dept Chem, Columbia, MO 65211 USA. Maron, L (Reprint Author), Univ Toulouse, 135 Ave Rangueil, F-31077 Toulouse, France. Maron, L (Reprint Author), LPCNO, CNRS, INSA, UPS,UMR,UMR 5215, 135 Ave Rangueil, F-31077 Toulouse, France. Rungthanaphatsophon, Pokpong; Bathelier, Adrien; Barnes, Charles L.; Walensky, Justin R., Univ Missouri, Dept Chem, Columbia, MO 65211 USA. Bathelier, Adrien; Castro, Ludovic; Maron, Laurent, Univ Toulouse, 135 Ave Rangueil, F-31077 Toulouse, France. Bathelier, Adrien; Castro, Ludovic; Maron, Laurent, LPCNO, CNRS, INSA, UPS,UMR,UMR 5215, 135 Ave Rangueil, F-31077 Toulouse, France.','author-email':'[email protected] [email protected]',da:'2018-12-05','doc-delivery-number':'FI7PR',eissn:'1521-3773','funding-acknowledgement':'U.S. Department of Energy, Office of Science, Early Career Research Program [DE-SC-0014174]; Humboldt Foundation; Chinese Academy of Science; CalMip','funding-text':'J.R.W. gratefully acknowledges support for this work from the U.S. Department of Energy, Office of Science, Early Career Research Program under Award Number DE-SC-0014174. L.M. is member of the Instiut Universitaire de France. The Humboldt Foundation, the Chinese Academy of Science and CalMip is acknowledged for either financial support or computing time.','journal-iso':'Angew. Chem.-Int. Edit.','keywords-plus':'CARBON MULTIPLE BOND; MOLECULAR-STRUCTURE; METALLA-ALLENES; URANIUM COMPLEX; TRANS-INFLUENCE; U-IV=C; REACTIVITY; LIGAND; CHEMISTRY; PH2PNSIME3','number-of-cited-references':'42',oa:'Bronze','orcid-numbers':'Walensky, Justin/0000-0003-0221-2675','research-areas':'Chemistry','times-cited':'5','unique-id':'ISI:000412189700021','usage-count-last-180-days':'0','usage-count-since-2013':'9','web-of-science-categories':'Chemistry, Multidisciplinary'\International audienceThe reaction of (C5Me5)(2)Th(CH3)(2) with the phosphonium salts [CH3PPh3]X (X=Cl, Br, I) was investigated. When X=Br and I, two equivalents of methane are liberated to afford (C5Me5)(2)Th[CHPPh3]X, rare terminal phosphorano-stabilized carbenes with thorium. These complexes feature the shortest thorium-carbon bonds (approximate to 2.30 angstrom) reported to date, and electronic structure calculations show some degree of multiple bonding. However, when X = Cl, only one equivalent of methane is lost with concomitant formation of benzene from an unstable phosphorus(V) intermediate, yielding (C5Me5)(2)Th[kappa(2)-(C,C')-(CH2)(CH2)PPh2]Cl. Density functional theory (DFT) investigations of the reaction energy profiles for [CH3PPh3]X, X = Cl and I showed that in the case of iodide, thermodynamics prevents the production of benzene and favors formation of the carbene
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