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79 results on '"Alexander von Humboldt-Stiftung"'

1. The 12th African Small Mammal Symposium : scientific programme and abstracts : 12th ASMS, Le Domaine de l'Ermitage, Mantasoa, Madagascar, 12-17 April 2015

Author

African Small Mammal Symposium Mantasoa, Madagascar) 2015, Association Vahatra, Université D'Antananarivo. Département de Biologie Animale, Field Museum of Natural History, Alexander Von Humboldt-Stiftung, Volkswagenstiftung, Field Museum of Natural History Library, African Small Mammal Symposium Mantasoa, Madagascar) 2015, Association Vahatra, Université D'Antananarivo. Département de Biologie Animale, Field Museum of Natural History, Alexander Von Humboldt-Stiftung, and Volkswagenstiftung

Subjects
Africa, Conference papers and proceedings, Congresses, Mammals
Published
2015

2. The 12th African Small Mammal Symposium : scientific programme and abstracts : 12th ASMS, Le Domaine de l'Ermitage, Mantasoa, Madagascar, 12-17 April 2015

Author

African Small Mammal Symposium Mantasoa, Madagascar) 2015, Association Vahatra, Université D'Antananarivo. Département de Biologie Animale, Field Museum of Natural History, Alexander Von Humboldt-Stiftung, Volkswagenstiftung, Field Museum of Natural History Library, African Small Mammal Symposium Mantasoa, Madagascar) 2015, Association Vahatra, Université D'Antananarivo. Département de Biologie Animale, Field Museum of Natural History, Alexander Von Humboldt-Stiftung, and Volkswagenstiftung

Subjects
Africa, Conference papers and proceedings, Congresses, Mammals

3. Baroque

Author

Peter J. Burgard, null Alexander von Humboldt Stiftung, and Evi Ziegler c/o EDV Fotowerk Huber

Published
2019
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8. Kunst - Religion - Politik

Author

Michael Quante, Lu de Vos, Karsten Berr, Elisabeth Weisser-Lohmann, Francesca Iannelli, Alain Patrick Olivier, Leonardo Amoroso, Myriam Bienenstock, Bernard Bourgeois, Paolo D’Angelo, Riccardo Dottori, Bruno Haas, Jean-François Kervégan, Jean-Marie Lardic, Bernard Mabille, Gilles Marmasse, Elio Matassi, Claudia Melica, Aurélien Merle, Douglas Moggach, Ernst-Otto Onnasch, Bruno Pinchard, Erzsébet Rózsa, Michael Städtler, Jean-Louis Vieillard-Baron, Alberto Leopoldo Siani, Norbert Waszek, Julien Labia, Christophe Bouton, Christoph Düchting, and null Alexander von Humboldt Stiftung

Published
2013
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11. Berechnung von Kreisprozessen der Gasturbinen in Verbindung mit Hochofen zur Eisenherstellung

Author

a. o. Prof., Technische Fakultät an der Keio Universität, Tokio/Japan.; Früher Stipendiat der Alexander von Humboldt-Stiftung, Ingenieur, Mitsubishi Shipbuilding & Engineering Co., Nagasaki/Japan.; Früher Assistent an der Keio Universität, Tokio/Japan, Dozent, technische Fakultät an der Doug-a Universität, Pusan/Korea; Früher Assistent an der Keio Universität, Tokio/Japan, Sato, G. Takeshi, Yokoyama, Jiro, Yang, ok young, a. o. Prof., Technische Fakultät an der Keio Universität, Tokio/Japan.; Früher Stipendiat der Alexander von Humboldt-Stiftung, Ingenieur, Mitsubishi Shipbuilding & Engineering Co., Nagasaki/Japan.; Früher Assistent an der Keio Universität, Tokio/Japan, Dozent, technische Fakultät an der Doug-a Universität, Pusan/Korea; Früher Assistent an der Keio Universität, Tokio/Japan, Sato, G. Takeshi, Yokoyama, Jiro, and Yang, ok young

Abstract

The twentieth anniversary memorial volume, In iron work we use often the gas turbine to produce blast air by using gicht gas as fuel. In order to determine the best cycle arrangement, the author has calculated thermodynamically the gicht gas consumptions for many cycle arrangements which are supposed to be possible. The consumption includes not only the gas used in gas turbine but also the gas used in Cowper stove. The following results are obtained: (1) The normal gas turbine arrangement with a heat exchanger gives fairly good efficiency. (2) The cycles without gas compressors give bad restlts.

Published
1959

12. Tobacco use and parental monitoring—observations from three diverse island nations—cook islands, Curaçao, and east Timor

Author

Alexander von Humboldt-Stiftung, Bonn, Germany, Shaikh, Masood Ali, Zare, Zahra, Ng, Kwok W., Celedonia, Karen L., Lowery Wilson, Michael, Alexander von Humboldt-Stiftung, Bonn, Germany, Shaikh, Masood Ali, Zare, Zahra, Ng, Kwok W., Celedonia, Karen L., and Lowery Wilson, Michael

Abstract

peer-reviewed, Tobacco use among adolescents is a global problem of public health importance. This study examined the profile of differences and similarities in adolescent tobacco use, and the role of parental monitoring activities among adolescents in three island nations of varying economic status: Cook Islands, Curaçao, and East Timor. Using nationally representative data we conducted regression modeling to determine the effect of four types of parental monitoring activities on tobacco use. Within a recall period of 30 days prior to being surveyed, 29.7% of students in East Timor, 21.6% in Cook Islands, and 13.1% in Curaçao reported having smoked cigarettes and/or used tobacco in other forms during 1 or more days during the preceding 30 days. Lower rates of parental monitoring as measured by four variables (parental understanding of problems and worries; knowing about how free time was being spent; going over things without approval; and checking to see if homework was done) were associated with higher percentages of adolescent tobacco use. Taken together the results underscore the need for increased parental involvement in programs which are designed to reduce tobacco use among adolescents.

14. The Alexander von Humboldt-Foundation

Author

Alexander von Humboldt-Stiftung

Subjects
World to come, Operations research, business.industry, Health Policy, Biochemistry (medical), Library science, language.human_language, Economic cooperation, German, Nature Conservation, Meeting Abstract, Drug Discovery, language, Medicine, Christian ministry, business
Abstract

The Alexander von Humboldt Foundation promotes academic cooperation between excellent scientists and scholars from abroad and from Germany. To this end, it grants more than 700 research fellowships and research awards annually. These allow scientists and scholars from all over the world to come to Germany to work on a research project they have chosen themselves together with a host and collaborative partner. Scientists or scholars from Germany can also profit from the support and carry out a research project abroad as a guest of one of well over 26,000 Humboldt Foundation alumni worldwide – the Humboldtians. Once a Humboldtian, always a Humboldtian. Even after the stay in Germany has come to an end, the Humboldt Foundation maintains close links with their alumni. The alumni sponsorship is tailored to the needs of every single Humboldtian, providing flexible support for the particular development and path in life as well as for cooperation with others. The Humboldt Network includes 49 academics who have been awarded the Nobel Prize. In 2011, the Nobel Prize for Medicine was divided among Humboldtians Bruce A. Beutler from the United States, Jules Alphonse Hoffmann from Luxembourg and Canadian Ralph M. Steinman. Beutler and Hoffman jointly received one half of the prize for their discovery of innate immunity. Steinman received the other half for his discovery of the dendritic cell and its role in adaptive immunity. From 2008 to 2012, a total of 2,830 fellowships were granted to academics abroad from all disciplines. For the same period, the Humboldt Foundation received 1,779 applications and approved 526 fellowships to researchers from the life sciences. The application and approval figures for medicine for the years 2008 to 2012 were 260 and 63, respectively. As an intermediary organisation for German foreign cultural and educational policy the Humboldt Foundation promotes international cultural dialogue and academic exchange. The Alexander von Humboldt Foundation is funded by the Federal Foreign Office, the Federal Ministry of Education and Research, the Federal Ministry for Economic Cooperation and Development, the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety as well as other national and international partners.

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18. O Esquema Conteúdo-Apreensão no Pensamento de Husserl: Origem, Consequências, Superação

Author

De Palma, Vittorio, Alexander von Humboldt-Stiftung, and FAPESP

Subjects
Filosofia, Fenomenologia, Epistemologia, Husserl, esquema conteúdo-apreensão, constituição
Abstract

No presente trabalho são perseguidas a gênese e as implicações do esquema conteúdo-apreensão, esquema este que é uma componente central do idealismo fenomenológico. Aqui é feita a tentativa de mostrar que a aplicação do esquema à percepção contradiz tanto a crítica da teoria da imagem, quanto a concepção da constituição sensível como um processo fundamentado na peculiaridade dos conteúdos. Além disso, será mostrado que Husserl realizou numerosas tentativas em direção a uma completa superação do esquema. Será apontado, por fim, que, de acordo com Husserl, a constituição do mundo tem uma pressuposição material, o que é frequentemente ignorado na literatura secundária. Essa pressuposição é a de que os conteúdos dados na sensibilidade possuem uma estrutura legal anterior e independente da apreensão subjetiva. Tradução de Daniel Peluso Guilhermino ** Doutorando em Filosofia pela Universidade de São Paulo (USP). Mestre em Filosofia pela Universidade de São Paulo (USP). Bacharel em Filosofia pela Universidade Federal de Juiz de Fora (UFJF).

Published
2022
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19. Methyl Viologens of Bis‐(4’‐Pyridylethynyl)Arenes – Structures, Photophysical and Electrochemical Studies, and their Potential Application in Biology

Author

Goutam Kumar Kole, Marta Košćak, Anissa Amar, Dragomira Majhen, Ksenija Božinović, Zlatko Brkljaca, Matthias Ferger, Evripidis Michail, Sabine Lorenzen, Alexandra Friedrich, Ivo Krummenacher, Michael Moos, Holger Braunschweig, Abdou Boucekkine, Christoph Lambert, Jean‐François Halet, Ivo Piantanida, Klaus Müller‐Buschbaum, Todd B. Marder, University of Würzburg = Universität Würzburg, Institut Ruđer Bošković (IRB), Université Mouloud Mammeri [Tizi Ouzou] (UMMTO), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Justus-Liebig-Universität Gießen = Justus Liebig University (JLU), Alexander von Humboldt-Stiftung, Julius-Maximilians-Universität Würzburg, Croatian Science Foundation. Grant Number: IP-2018-01-5475, and Grand Équipement National De Calcul Intensif. Grant Number: 2021-080649

Subjects
Anthracenes, Paraquat, Methyl Viologen, Two-photon Absorption, Singlet Oxygen, DNA/RNA Binding, Cell Imaging, Molecular Structure, Singlet oxygen, Organic Chemistry, Benzene, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, DNA, General Chemistry, Catalysis, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Chemistry, cell imaging, ddc:540, Humans, RNA, two-photon absorption, Biology
Abstract

A series of bis‐(4’‐pyridylethynyl)arenes (arene=benzene, tetrafluorobenzene, and anthracene) were synthesized and their bis‐N‐methylpyridinium compounds were investigated as a class of π‐extended methyl viologens. Their structures were determined by single crystal X‐ray diffraction, and their photophysical and electrochemical properties (cyclic voltammetry), as well as their interactions with DNA/RNA were investigated. The dications showed bathochromic shifts in emission compared to the neutral compounds. The neutral compounds showed very small Stokes shifts, which are a little larger for the dications. All of the compounds showed very short fluorescence lifetimes (

Published
2022
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20. Musique et cosmos

Author

Ehrhardt, Damien, Synergies Langues Arts Musique (SLAM), Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay, Université d'Évry-Val-d'Essonne (UEVE), Alexander von Humboldt Stiftung / Foundation, FCT Fundaçao para a Ciencia e a Tecnologia, Soraya Nour-Sckell, Damien Ehrhardt, and Cosmopolitanism: Justice, Democracy and Citizenship without Borders

Subjects
Music history, Humboldt, [SHS.MUSIQ]Humanities and Social Sciences/Musicology and performing arts, Musique des Sphères, Musical Form, Forme musicale, Cosmos, Musique et cosmos, [SHS]Humanities and Social Sciences, Music of Spheres, Music and cosmos, Kepler, Darwin, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2022

21. Introduction

Author

Nour Sckell, Soraya, Ehrhardt, Damien, Universidade Nova de Lisboa = NOVA University Lisbon (NOVA), Synergies Langues Arts Musique (SLAM), Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay, Université d'Évry-Val-d'Essonne (UEVE), Alexander von Humboldt Stiftung / Foundation, FCT Fundaçao para a Ciência e a Tecnologia, Soraya Nour Sckell, Damien Ehrhardt, and Cosmopolitanism: Justice, Democracy and Citizenship without Borders

Subjects
Histoire, History, Cosmopolitisme, Cosmopolitique, Cosmopolitanism, Cosmos, ComputingMilieux_MISCELLANEOUS, Cosmopolitics, [SHS]Humanities and Social Sciences
Abstract

International audience

Published
2022

22. Beethoven et la philosophie : musique, dialectique et libre improvisation

Author

Olivier, Alain Patrick, THALIM - Théorie et histoire des arts et des littératures de la modernité - UMR 7172 (THALIM), Université Sorbonne Nouvelle - Paris 3-Centre National de la Recherche Scientifique (CNRS)-Département Arts - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Alexander von Humboldt Stiftung, William A. Kinderman, Christine Siegert, Federica Rovelli, OLIVIER, Alain Patrick, Université Sorbonne Nouvelle - Paris 3-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SHS.PHIL] Humanities and Social Sciences/Philosophy, Philosophy, Improvisation, Adorno, [SHS.PHIL]Humanities and Social Sciences/Philosophy, Aesthetics, Beethoven, Dialectics, Hegel, Music
Abstract

International audience; Can we compare a musical work and a philosophical work? Are they two similar manifestations of the mind? 2020 marked the anniversary of Beethoven's birth and the anniversary of Hegel's birth. The musician and the philosopher lived through the same historical situation marked by the French Revolution and the advent of modernity. It may seem paradoxical to speak of a correspondence between Hegel's philosophy and Beethoven's music, for they never met and there is no evidence that they were aware of each other's work. Hegel mentions most of the composers of his time in his aesthetic lectures, but he never mentions Beethoven, even though, for the musicologist Carl Dahlhaus, this very silence is "telling". Moreover, even if Hegel had not known Beethoven's music, or if he had not managed to understand it, this does not prevent us from establishing a correspondence between the logic at work in his philosophy and that which is present in Beethoven's music, in particular between the structure of dialectical logic and the structure of tonal music. Theodor W. Adorno wrote that between Beethoven's music and Hegel's logic, it is not only a question of establishing a relationship of analogy. According to him, it is the thing itself that is at stake. (Beethovenian) music would not merely borrow contingent traits of identity from (Hegelian) philosophy, but would be the logical concept itself presented in musical form. According to Adorno, if this analogy exists, one should not look for its formulation in the lectures on aesthetics, in what Hegel says about music, because he would not have any competence in this field, but rather in the Logic or the Phenomenology of Spirit. Adorno and Dahlhaus, however, rely on a corrupted version of H. G. Hotho's posthumously edited Aesthetic lectures. The study of the sources, which we carried out in the context of the work with A. Gethmann-Siefert at the Fernuniversität in Hagen, shows that although Hegel does not explicitly quote Beethoven in his lectures, he does intervene in the debate on instrumental music, and certain passages, on the notion of theme, for example, can be interpreted as allusions. There is an insight into the dialectical nature of sonata form. But it is less the analysis of the thematic work that makes the link with Beethoven in the lessons than the theory of the artist musician and the conception of free improvisation. For Hegel, it is Rossini's singers and Paganini's improvisations that constitute the experiences of musical improvisation. One could say that for him they are manifestations of the absolute spirit. But these descriptions could also apply to Beethoven's music, since free improvisation was, according to his contemporaries – and to W. Kinderman – an essential dimension of his art. This principle of improvisation has gradually disappeared from Western art music. Today it is rather in the theory of so-called popular music that the analogy between music based on improvisation and the dialectic of philosophy is constructed. If one listens to Beethoven's music and at the same time reads the theory of improvisation produced by Hegel, then one could come to very different conclusions from Dahlhaus and Adorno concerning the relationship between music, the dialectic and the principle of freedom. And if one considers that music also reflects the society in which it is produced, this conception could also open up possibilities to think about freer forms of life, as Beethoven taught us to do.

Published
2021

23. Intramolecular rearrangements guided by adaptive coordination-driven reactions toward highly luminescent polynuclear Cu(<scp>i</scp>) assemblies

Author

Karine Costuas, Sloane Evariste, Vivian Wing-Wah Yam, Ali Moustafa Khalil, Mehdi Elsayed Moussa, Guillaume Calvez, Christophe Lescop, Vincent Delmas, Boris Le Guennic, Hok-Lai Wong, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), City University of Hong Kong [Hong Kong] (CUHK), Agence Nationale de la Recherche, ANR Alexander von Humboldt-Stiftung University of Hong Kong, HKUHKU 17334216AoE/P-03/ 08 Centre National de la Recherche Scientifique, CNRS, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Intrinsic luminescence, Adaptive coordination, Supramolecular chemistry, 010402 general chemistry, 01 natural sciences, Fluorescence, Inorganic Chemistry, Metal, Copper alloys, Platinum alloys, [CHIM]Chemical Sciences, Redistribution (chemistry), Scaffolds, Spin orbit coupling, 010405 organic chemistry, Copper compounds, Building blockes, Binary alloys, Metallacycle, Coordination-driven, Combinatorial chemistry, Photophysical properties, 0104 chemical sciences, Thermally activated delayed fluorescences, Heavy metals, visual_art, Intramolecular force, Intramolecular rearrangement, visual_art.visual_art_medium, Science, technology and society, Luminescence, Gold alloys, Coordination reactions, Supramolecular scaffolds
Abstract

International audience; Adaptive coordination-driven supramolecular chemistry based on conformationally flexible pre-organized luminescent Cu(I) precursors paves the way to the ready formation of intricate supramolecular scaffold possessing intrinsic luminescence properties. A formal ring extension of a tetrametallic Cu(I) metallacycle bearing Thermally Activated Delayed Fluorescence (TADF) properties can thus be carried out, affording a new hexametallic Cu(I) metallacycle 1 bearing modulated solid-state TADF properties. Attempts to adapt this ring extension process to the formation of targeted heterometallic Au2Cu4 and Pt2Cu8 assemblies led to the unexpected and ready formation of the Au2Cu10 and Pt4Cu11 derivatives 2 and 3, respectively. These outcomes strengthen the scope and perspectives of adaptive coordination-driven supramolecular chemistry compared to those of conventional coordination-driven supramolecular chemistry. Indeed, it guides concerted intramolecular fragmentation and redistribution of the particular building blocks used, affording selectively supramolecular scaffolds of higher nuclearity and complexity. The study of the solid-state photophysical properties of the assemblies 2 and 3 highlights enhanced and original behaviors, in which the heavy metal spin-orbit coupling values significantly influence the relaxation processes centered on the Cu(I) metal centers.

Published
2020
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24. Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling

Author

François Guillocheau, Roderick Brown, Jessica R. Stanley, Mark Wildman, Jean Braun, Romain Beucher, Cécile Robin, Rebecca M. Flowers, Guillaume Baby, University of Idaho [Moscow, USA], University of Potsdam, Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Géosciences Rennes (GR), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), University of Colorado [Boulder], University of Glasgow, Research School of Earth Sciences [Canberra] (RSES), Australian National University (ANU), University of Potsdam = Universität Potsdam, Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), and Alexander von Humboldt-Stiftung

Subjects
epeirogeny, Landscape evolution model, 010504 meteorology & atmospheric sciences, 010502 geochemistry & geophysics, 01 natural sciences, Paleontology, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Southern African Plateau, Epeirogenic movement, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, 0105 earth and related environmental sciences, geography, Plateau, geography.geographical_feature_category, 15. Life on land, erosion, Cretaceous, Thermochronology, Gondwana, Geophysics, 13. Climate action, Space and Planetary Science, Erosion, Cenozoic, Geology
Abstract

The uplift of the southern African Plateau with its average elevations of ~1000 m is often attributed to mantle processes, but there are conflicting theories for the timing and drivers of topographic development. Evidence for most proposed plateau development histories is derived from continental erosion histories, marine stratigraphic architecture, or landscape morphology. Here we use a landscape evolution model to integrate a large dataset of low-temperature thermochronometry, sediment flux rates to surrounding marine basins, and current topography for southern Africa. We explore three main hypotheses for surface uplift: 1) southern Africa was already elevated by the Early Cretaceous before Gondwana breakup, 2) uplift and continental tilting occurred during the mid-Cretaceous, or 3) uplift occurred during the mid to late Cenozoic. We test which of these three intervals of plateau development are plausible by using an inversion method to constrain the range in erosional and uplift model parameters that can best reproduce the observed data. Results indicate four regions of parameter space that fall into two families of uplift histories are most compatible with the data. Both uplift families have limited initial topography with some topographic uplift and continental tilting starting at ~90-100 Ma. In one acceptable scenario, nearly all of the topography, >1300 m, is created at this time with little Cenozoic uplift. In the other acceptable scenario, ~400-800 m of uplift occurs in the mid- Cretaceous with another ~500-1000 m of uplift in the mid-Cenozoic. The two model scenarios have different geodynamic implications, which we compare to geodynamic models.

Published
2021
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25. First report of grapevine red globe virus in grapevine in Iran

Author

Shaheen Nourinejhad Zarghani, Thierry Wetzel, Maryam Khalili, Akbar Dizadji, University of Tehran, DLR Rheinpfalz, Institute of Plant Protection, Biologie du fruit et pathologie (BFP), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and This study was jointly supported by a Georg Foster Grant (Ref 3.4 -IRN/1186607, Alexander von Humboldt-Stiftung) and a grant from Iran National Science Foundation (grant number 94012607)

Subjects
0303 health sciences, [SDV]Life Sciences [q-bio], Plant Science, 030312 virology, Grapevine Red Globe virus, Biology, Tymoviridae, Primer, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy, 03 medical and health sciences, Maculavirus, Botany, Grapevine, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology
Abstract

International audience

Published
2021
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26. Coordination-driven Supramolecular Synthesis based on Bimetallic Cu(I) Precursors: Adaptive Behavior and Luminescence

Author

Christophe Lescop, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Campus France, Alexander von Humboldt-Stiftung, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, luminescent molecular materials, General Chemical Engineering, Supramolecular chemistry, Nanotechnology, Electronic structure, 010402 general chemistry, 01 natural sciences, Biochemistry, Conformational flexibility, Coordination complex, Materials Chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Bimetallic strip, Flexibility (engineering), chemistry.chemical_classification, Adaptive behavior, 010405 organic chemistry, Coordination driven supramolecular chemistry, General Chemistry, Polymer, 0104 chemical sciences, chemistry, Cu(I) ion, polymetallic complexes, Luminescence
Abstract

International audience; Pre-organized adaptive Cu(I) bimetallic precursors can be successfully engaged in coordination-driven supramolecular reactions. Selective formation either of a large family of compact metallacycles or of polymetallic discrete assemblies and one-dimensional coordination polymers is rationalized taking into account the relative amplitudes of conformational flexibility allowed by the precursors used. It reveals the originality of the self-assembly processes conducted with such Cu(I)-based building blocks. In addition, exalted luminescence properties can be embedded in the resulting supramolecular assemblies due to the specific photophysical behaviors of Cu(I)-luminophores. General and straightforward access toward coordination-driven supramolecular assemblies featuring original architectures and multifunctional luminescence properties is therefore highlighted, taking advantage of both the specificities of the coordination chemistry and the electronic structure of derivatives based on the Cu(I) ion.

Published
2021
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27. Mapping routine measles vaccination in low- and middle-income countries

Author

Sbarra, AN, Rolfe, S, Nguyen, JQ, Earl, L, Galles, NC, Marks, A, Abbas, KM, Abbasi-Kangevari, M, Abbastabar, H, Abd-Allah, F, Abdelalim, A, Abdollahi, M, Abegaz, KH, Abiy, HAA, Abolhassani, H, Abreu, LG, Abrigo, MRM, Abushouk, AI, Accrombessi, MMK, Adabi, M, Adebayo, OM, Adekanmbi, V, Adetokunboh, OO, Adham, D, Afarideh, M, Aghaali, M, Ahmad, T, Ahmadi, R, Ahmadi, K, Ahmed, MB, Alanezi, FM, Alanzi, TM, Alcalde-Rabanal, JE, Alemnew, BT, Ali, BA, Ali, M, Alijanzadeh, M, Alinia, C, Alipoor, R, Alipour, V, Alizade, H, Aljunid, SM, Almasi, A, Almasi-Hashiani, A, Al-Mekhlafi, HM, Altirkawi, KA, Amare, B, Amini, S, Amini-Rarani, M, Amiri, F, Amit, AML, Amugsi, DA, Ancuceanu, R, Andrei, CL, Anjomshoa, M, Ansari, F, Ansari-Moghaddam, A, Ansha, MG, Antonio, CAT, Antriyandarti, E, Anvari, D, Arabloo, J, Arab-Zozani, M, Aremu, O, Armoon, B, Aryal, KK, Arzani, A, Asadi-Aliabadi, M, Asgari, S, Atafar, Z, Ausloos, M, Awoke, N, Quintanilla, BPA, Ayanore, MA, Aynalem, YA, Azadmehr, A, Azari, S, Babaee, E, Badawi, A, Badiye, AD, Bahrami, MA, Baig, AA, Bakhtiari, A, Balakrishnan, S, Banach, M, Banik, PC, Barac, A, Baradaran-Seyed, Z, Baraki, AG, Basu, S, Bayati, M, Bayou, YT, Bedi, N, Behzadifar, M, Bell, ML, Berbada, DA, Berhe, K, Bhattarai, S, Bhutta, ZA, Bijani, A, Birhanu, M, Bisanzio, D, Biswas, A, Bohlouli, S, Bolla, SR, Borzouei, S, Brady, OJ, Bragazzi, NL, Briko, AN, Briko, NI, Nagaraja, SB, Butt, ZA, Cámera, LA, Campos-Nonato, IR, Car, J, Cárdenas, R, Carvalho, F, Castaldelli-Maia, JM, Castro, F, Chattu, VK, Chehrazi, M, Chin, KL, Chu, D-T, Cook, AJ, Cormier, NM, Cunningham, B, Dahlawi, SMA, Damiani, G, Dandona, R, Dandona, L, Danovaro, MC, Dansereau, E, Daoud, F, Darwesh, AM, Darwish, AH, Das, JK, Weaver, ND, De Neve, J-W, Demeke, FM, Demis, AB, Denova-Gutiérrez, E, Desalew, A, Deshpande, A, Desta, DM, Dharmaratne, SD, Dhungana, GP, Dianatinasab, M, Diaz, D, Dipeolu, IO, Djalalinia, S, Do, HT, Dorostkar, F, Doshmangir, L, Doyle, KE, Dunachie, SJ, Duraes, AR, Kalan, ME, Leylabadlo, HE, Edinur, HA, Effiong, A, Eftekhari, A, El, Sayed, I, El, Sayed, Zaki, M, Elema, TB, Elhabashy, HR, El-Jaafary, SI, Elsharkawy, A, Emamian, MH, Enany, S, Eshrati, B, Eskandari, K, Eskandarieh, S, Esmaeilnejad, S, Esmaeilzadeh, F, Esteghamati, A, Etisso, AE, Farahmand, M, Faraon, EJA, Fareed, M, Faridnia, R, Farioli, A, Farzadfar, F, Fattahi, N, Fazlzadeh, M, Fereshtehnejad, S-M, Fernandes, E, Filip, I, Fischer, F, Foigt, NA, Folayan, MO, Foroutan, M, Fukumoto, T, Fullman, N, Gad, MM, Geberemariyam, BS, Gebrehiwot, TT, Gebrehiwot, AM, Gebremariam, KT, Gebremedhin, KB, Gebremeskel, GG, Gebreslassie, AA, Gedefaw, GA, Gezae, KE, Ghadiri, K, Ghaffari, R, Ghaffarifar, F, Ghajarzadeh, M, Gheshlagh, RG, Ghashghaee, A, Ghiasvand, H, Gholamian, A, Gilani, SA, Gill, PS, Girmay, A, Gomes, NGM, Gopalani, SV, Goulart, BNG, Grada, A, Guimarães, RA, Guo, Y, Gupta, R, Hafezi-Nejad, N, Haj-Mirzaian, A, Handiso, DW, Hanif, A, Haririan, H, Hasaballah, AI, Hasan, MM, Hasanpoor, E, Hasanzadeh, A, Hassanipour, S, Hassankhani, H, Heidari-Soureshjani, R, Henry, NJ, Herteliu, C, Heydarpour, F, Hollerich, GI, Rad, EH, Hoogar, P, Hossain, N, Hosseini, M, Hosseinzadeh, M, Househ, M, Hu, G, Huda, TM, Humayun, A, Ibitoye, SE, Ikilezi, G, Ilesanmi, OS, Ilic, IM, Ilic, MD, Imani-Nasab, MH, Inbaraj, LR, Iqbal, U, Irvani, SSN, Islam, SMS, Islam, MM, Iwu, CJ, Iwu, CCD, Jadidi-Niaragh, F, Jafarinia, M, Jahanmehr, N, Jakovljevic, M, Jalali, A, Jalilian, F, Javidnia, J, Jenabi, E, Jha, V, Ji, JS, John, O, Johnson, KB, Joukar, F, Jozwiak, JJ, Kabir, Z, Kabir, A, Kalani, H, Kalankesh, LR, Kalhor, R, Kamal, Z, Kanchan, T, Kapoor, N, Karami, M, Matin, BK, Karch, A, Karimi, SE, Kayode, GA, Karyani, AK, Keiyoro, PN, Khader, YS, Khafaie, MA, Khammarnia, M, Khan, MS, Khan, EA, Khan, J, Khan, MN, Khatab, K, Khater, MM, Khatib, MN, Khayamzadeh, M, Khazaei, M, Khazaei, S, Khosravi, A, Khubchandani, J, Kianipour, N, Kim, YJ, Kimokoti, RW, Kinyoki, DK, Kisa, A, Kisa, S, Kolola, T, Komaki, H, Kosen, S, Koul, PA, Koyanagi, A, Kraemer, MUG, Krishan, K, Kuate Defo, B, Kumar, M, Kumar, P, Kumar, GA, Kusuma, D, La Vecchia, C, Lacey, B, Lad, SD, Lal, DK, Lam, F, Lami, FH, Lansingh, VC, Larson, HJ, Lasrado, S, Lee, SWH, Lee, PH, LeGrand, KE, Lenjebo, TL, Li, S, Liang, X, Liu, PY, Lopukhov, PD, Machado, DB, Mahasha, PW, Mahdavi, MM, Maheri, M, Mahotra, NB, Maled, V, Maleki, S, Malik, MA, Malta, DC, Mansour-Ghanaei, F, Mansouri, B, Mansourian, M, Mansournia, MA, Martins-Melo, FR, Masaka, A, Mayala, BK, Mehndiratta, MM, Mehri, F, Mehta, KM, Memiah, PTN, Mendoza, W, Menezes, RG, Mengesha, MB, Mengesha, EW, Mestrovic, T, Mihretie, KM, Miller-Petrie, MK, Mills, EJ, Milne, GJ, Mirabi, P, Mirrakhimov, EM, Mirzaei, R, Mirzaei, M, Mirzaei, HR, Mirzaei, H, Mirzaei-Alavijeh, M, Moazen, B, Moghadaszadeh, M, Mohamadi, E, Mohammad, DK, Mohammad, Y, Mohammad, KA, Mohammad Gholi Mezerji, N, Mohammadbeigi, A, Mohammadian-Hafshejani, A, Mohammadpourhodki, R, Mohammed, S, Mohammed, AS, Mohammed, H, Mohebi, F, Mokdad, AH, Monasta, L, Moosavi, MA, Moosazadeh, M, Moradi, G, Moradi, M, Moradi-Joo, M, Moradi-Lakeh, M, Moradzadeh, R, Moraga, P, Mosapour, A, Mouodi, S, Mousavi, SM, Khaneghah, AM, Mueller, UO, Muluneh, AG, Munro, SB, Murray, CJL, Murthy, GVS, Muthupandian, S, Naderi, M, Nagarajan, AJ, Naghavi, M, Nangia, V, Nansseu, JR, Nayak, VC, Nazari, J, Ndwandwe, DE, Negoi, I, Ngunjiri, JW, Nguyen, HLT, Nguyen, CTK, Nguyen, TH, Nigatu, YT, Nikbakhsh, R, Nikfar, S, Nikpoor, AR, Ningrum, DNA, Nnaji, CA, Oh, I-H, Oladnabi, M, Olagunju, AT, Olusanya, JO, Olusanya, BO, Bali, AO, Omer, MO, Onwujekwe, OE, Osgood-Zimmerman, AE, Owolabi, MO, P, A, M, Padubidri, JR, Pakshir, K, Pana, A, Pandey, A, Pando-Robles, V, Pashaei, T, Pasupula, DK, Paternina-Caicedo, AJ, Patton, GC, Pazoki Toroudi, H, Pepito, VCF, Pescarini, JM, Pigott, DM, Pilgrim, T, Pirsaheb, M, Poljak, M, Postma, MJ, Pourjafar, H, Pourmalek, F, Pourmirza, Kalhori, R, Prada, SI, Prakash, S, Quazi Syed, Z, Quintana, H, Rabiee, N, Rabiee, M, Radfar, A, Rafiei, A, Rahim, F, Rajati, F, Rameto, MA, Ramezanzadeh, K, Ranabhat, CL, Rao, SJ, Rasella, D, Rastogi, P, Rathi, P, Rawaf, S, Rawaf, DL, Rawal, L, Rawassizadeh, R, Rawat, R, Renjith, V, Renzaho, AMN, Reshmi, B, Reta, MA, Rezaei, N, Rezai, MS, Rezapour, A, Riahi, SM, Ribeiro, AI, Rickard, J, Rios-Blancas, M, Rios-González, CM, Roever, L, Rostamian, M, Rubino, S, Rwegerera, GM, Saad, AM, Saadatagah, S, Sabour, S, Sadeghi, E, Moghaddam, SS, Saeidi, S, Sagar, R, Sahebkar, A, Sahraian, MA, Sajadi, SM, Salahshoor, MR, Salam, N, Salem, H, Salem, MR, Salomon, JA, Kafil, HS, Sambala, EZ, Samy, AM, Saraswathy, SYI, Sarmiento-Suárez, R, Saroshe, S, Sartorius, B, Sarveazad, A, Sathian, B, Sathish, T, Schaeffer, LE, Schwebel, DC, Senthilkumaran, S, Shabaninejad, H, Shahabi, S, Shaheen, AA, Shaikh, MA, Shalash, AS, Shams-Beyranvand, M, Shamsi, MB, Shamsizadeh, M, Sharafi, K, Sharifi, H, Sheikh, A, Sheikhtaheri, A, Shetty, RS, Shiferaw, WS, Shigematsu, M, Shin, JI, Shirkoohi, R, Siabani, S, Siddiqi, TJ, Silverberg, JIS, Simonetti, B, Singh, JA, Sinha, DN, Sinke, AH, Soheili, A, Sokhan, A, Soltani, S, Soofi, M, Sorrie, MB, Soyiri, IN, Spotin, A, Spurlock, EE, Sreeramareddy, CT, Sudaryanto, A, Sufiyan, MB, Suleria, HAR, Abdulkader, RS, Taherkhani, A, Tapak, L, Taveira, N, Taymoori, P, Tefera, YM, Tehrani-Banihashemi, A, Teklehaimanot, BF, Tekulu, GH, Tesfay, BE, Tessema, ZT, Tessema, B, Thankappan, KR, Tohidinik, HR, Topor-Madry, R, Tovani-Palone, MR, Tran, BX, Uddin, R, Ullah, I, Umeokonkwo, CD, Unnikrishnan, B, Upadhyay, E, Usman, MS, Vaezi, M, Valadan, Tahbaz, S, Valdez, PR, Vasseghian, Y, Veisani, Y, Violante, FS, Vollmer, S, Waheed, Y, Wakefield, J, Wang, Y, Wang, Y-P, Weldesamuel, GT, Werdecker, A, Westerman, R, Wiangkham, T, Wiens, KE, Wiysonge, CS, Woldu, G, Wondafrash, DZ, Wonde, TE, Wu, A-M, Yadollahpour, A, Jabbari, SHY, Yamada, T, Yaya, S, Yazdi-Feyzabadi, V, Yeheyis, TY, Yeshaw, Y, Yilgwan, CS, Yip, P, Yonemoto, N, Younis, MZ, Yousefi, Z, Yousefifard, M, Yousefinezhadi, T, Yu, C, Yusefzadeh, H, Zadey, S, Zahirian, Moghadam, T, Zaki, L, Zaman, SB, Zamani, M, Zamanian, M, Zandian, H, Zangeneh, A, Zarei, F, Zerfu, TA, Zhang, Y, Zhang, Z-J, Zhao, X-JG, Zhou, M, Ziapour, A, Hay, SI, Lim, SS, Mosser, JF, Local Burden of Disease Vaccine Coverage Collaborators, Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET), Value, Affordability and Sustainability (VALUE), Microbes in Health and Disease (MHD), HUS Comprehensive Cancer Center, Clinicum, Department of Oncology, Sbarra, Alyssa N., Rolfe, Sam, Nguyen, Jason Q., Earl, Lucas, Ahmed, MB, Mosser, Jonathan F, Collaborators, Local Burden of Disease Vaccine Coverage, Bill & Melinda Gates Foundation, Alexander von Humboldt-Stiftung, Unión Europea. Fondo Europeo de Desarrollo Regional (FEDER/ERDF), Universiti Sains Malaysia (Malasia), Panjab University (India), NIHR - Oxford Biomedical Research Centre (Reino Unido), Australian Research Council, Instituto de Saúde Pública da Universidade do Porto, Local Burden Dis Educ Attainment C, Local Burden of Disease Vaccine Coverage Collaborator, and Violante FS

Subjects
and promotion of well-being, Vacunación Masiva, Internationality, Disease prevention, children under 5 years old, Geographic Mapping, Rural Health, medicine.disease_cause, Cross-reactivity, 0302 clinical medicine, RA0421, Vaccination Refusal, 030212 general & internal medicine, Child, immunity patterns, Pediatric, 0303 health sciences, Public health, Multidisciplinary, biology, Vaccination, Uncertainty, IMMUNIZATION, 3142 Public health care science, environmental and occupational health, COVERAGE, 3. Good health, TIME, 3.4 Vaccines, Child, Preschool, Infectious diseases, A990 Medicine and Dentistry not elsewhere classified, Antibody, Engineering sciences. Technology, AFRICA, General Science & Technology, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), COVID-19, 610 Medicine & health, Global Vaccine Action Plan (GVAP), Local Burden of Disease Vaccine Coverage Collaborators, Article, Vaccine Related, 03 medical and health sciences, measles vaccine, Measels, Low- and middle-income countries, Local burden of disease, Clinical Research, medicine, Humans, Healthcare Disparities, Preschool, PROGRESS, 030304 developmental biology, business.industry, MORTALITY, Developed Countries, Prevention, Comment, Vacunación, Urban Health, Prevention of disease and conditions, Virology, Coronavirus, Good Health and Well Being, Cobertura de Vacunación, biology.protein, Immunization, business, Measles
Abstract

The safe, highly effective measles vaccine has been recommended globally since 1974, yet in 2017 there were more than 17 million cases of measles and 83,400 deaths in children under 5 years old, and more than 99% of both occurred in low- and middle-income countries (LMICs)1–4. Globally comparable, annual, local estimates of routine first-dose measles-containing vaccine (MCV1) coverage are critical for understanding geographically precise immunity patterns, progress towards the targets of the Global Vaccine Action Plan (GVAP), and high-risk areas amid disruptions to vaccination programmes caused by coronavirus disease 2019 (COVID-19)5–8. Here we generated annual estimates of routine childhood MCV1 coverage at 5 × 5-km2 pixel and second administrative levels from 2000 to 2019 in 101 LMICs, quantified geographical inequality and assessed vaccination status by geographical remoteness. After widespread MCV1 gains from 2000 to 2010, coverage regressed in more than half of the districts between 2010 and 2019, leaving many LMICs far from the GVAP goal of 80% coverage in all districts by 2019. MCV1 coverage was lower in rural than in urban locations, although a larger proportion of unvaccinated children overall lived in urban locations; strategies to provide essential vaccination services should address both geographical contexts. These results provide a tool for decision-makers to strengthen routine MCV1 immunization programmes and provide equitable disease protection for all children., Although progress in the coverage of routine measles vaccination in children in low- and middle-income countries was made during 2000–2019, many countries remain far from the goal of 80% coverage in all districts by 2019.

Published
2021
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28. Organometallic chemistry of new carbon materials. Structure and dynamic behavior of group 6 metal tricabonyl complexes of graphene and perforated graphene: a DFT study

Author

N. S. Zhulyaev, Yu. F. Oprunenko, Mikhail S. Nechaev, Jean-Yves Saillard, Franck Gam, Igor P. Gloriozov, Lomonosov Moscow State University (MSU), A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences [Moscow] (RAS), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Alexander von Humboldt-Stiftung, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Catalysis, law.invention, metal tricarbonyl complexes, Metal, interring haptotropic rearrangements 2, chemistry.chemical_compound, Chromium, PAHs, law, Materials Chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, density functional theory, Organometallic chemistry, Graphene, graphene, General Chemistry, 021001 nanoscience & nanotechnology, Coronene, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry, visual_art, Kekulene, visual_art.visual_art_medium, Physical chemistry, Density functional theory, 0210 nano-technology, Carbon
Abstract

International audience; The mechanism of inter-ring haptotropic rearrangements (IRHRs) was investigated by DFT for the tricarbonyl eta(6)-complexes of group 6 metals (M = Cr, Mo, W) of coronene (I-M), kekulene (II-M) and a model graphene (III-M). The computed eta(6),eta(6)-IRHR activation barriers in the middle size PAHs I-M and II-M were calculated to be substantially lower than those in the case of complexes of relatively small size PAHs such as naphthalene chromium tricarbonyl (Delta G approximate to 20-25 kcal mol(-1)vs. approximate to 30 kcal mol(-1)). The barrier is further lowered in the case of the model graphene complex III-Cr (Delta G approximate to 13 kcal mol(-1)). An even lower barrier is found for III-Mo (Delta G approximate to 10 kcal mol(-1)), whereas it slightly increases for III-W (Delta G approximate to 14 kcal mol(-1)).

Published
2019
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29. Synthesis and mesomorphic properties of new organosiloxane chiral calamitic liquid crystals

Author

Hale Ocak, Belkız Bilgin Eran, Huriye Akdas-Kiliç, Franck Camerel, Burcu Karaagac, Olivier Jeannin, Yildiz Technical University (YTU), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 2011-01-02-YULAP06, Alexander von Humboldt-Stiftung, AvH, and Université de Rennes 1

Subjects
(S)-2-methylbutoxy group, Materials science, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Hydrosilylation, Liquid crystals, Dimer, Mesophase, Disiloxane, Condensed Matter Physics, Organosiloxane, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Calamitic, chemistry.chemical_compound, Crystallography, chemistry, Liquid crystal, Phase (matter), Siloxane, Materials Chemistry, Carboxylate, Chirality, Physical and Theoretical Chemistry, Spectroscopy
Abstract

International audience; A new chiral calamitic compound consisting of a phenyl core that is connected through ester linkers to a benzoate carrying a chiral (S)-2-methylbutoxy group at one side and a biphenyl carboxylate with an undecenyloxy chain at other side has been synthesized. Additionally, the siloxane substituted derivatives and a dimer with these two identical chiral calamitics linked by a disiloxane spacer have been obtained via hydrosilylation reaction to study the effect of combining the chiral moiety and siloxane segments within the same structure on liquid crystalline properties. The chiral calamitic compound and derivatives with a siloxane end-group or a siloxane spacer have been characterized using classical spectroscopic methods (1H NMR, 13C NMR, 29Si NMR and MS) and elemental analysis (EA). The liquid crystalline properties of all new compounds were investigated by differential scanning calorimetry, optical polarizing microscopy, X-ray scattering and electro-optic methods. With the introduction of a siloxane end-group to the vinyl-terminated calamitic compound exhibiting enantiotropic chiral nematic phase (N*) and chiral tilted smectic phase (SmC*), the occurrence of stable smectic phase was strongly promoted. In a similar way, the dimer with two identical calamitic mesogens connected by a disiloxane spacer exhibited a wider smectic mesophase interval in addition to the presence of N* mesophase. The new mesogens exhibit a ferroelectric switching with PS of around 200 nC cm−2 in their chiral tilted smectic (SmC*) mesophase range. The transition temperatures of organosiloxanes are considerably lower than that of olefinic precursor.

Published
2022
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30. Evolution of gene expression after whole-genome duplication: New insights from the spotted gar genome

Author

Peter Batzel, Cédric Cabau, Yann Guiguen, Jérôme Montfort, John H. Postlethwait, Christophe Klopp, Elodie Jouanno, Thuy Thao Vi Nguyen, Laurent Journot, Ingo Braasch, Jeremy Pasquier, Camille Berthelot, Julien Bobe, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Recherche Agronomique (INRA), Michigan State University [East Lansing], Michigan State University System, Institute of Neuroscience, University of Oregon [Eugene], Génétique Physiologie et Systèmes d'Elevage (GenPhySE ), École nationale supérieure agronomique de Toulouse [ENSAT]-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, École normale supérieure - Cachan (ENS Cachan), Unité de Mathématiques et Informatique Appliquées de Toulouse (MIAT INRA), Institut National de la Recherche Agronomique (INRA), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), This work was supported by ANR under grant agreement #ANR-10-GENM-017 (PhyloFish) to JB, NIH grants R01 OD011116 (alias R01 RR020833) and R24 OD01119004 (J.H.P.), a Feodor Lynen Fellowship from the Alexander von Humboldt Foundation and the Volkswagen Foundation Initiative Evolutionary Biology, grant I/84 815 (I.B.), ANR-10-GENM-0017,PhyloFish,Analyse phylogénomique des duplications géniques chez les poissons téléostéens: une approche par RNA-Seq(2010), Institute of Neuroscience, University of Oregon, Eugene, Oregon, Institut de biologie de l'ENS Paris (IBENS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité de Biométrie et Intelligence Artificielle (UBIA), R01 OD011116 (alias R01 RR020833) and R24 OD01119004, National Institutes of Health, Alexander von Humboldt-Stiftung, I/84 815, Volkswagen Foundation, Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École nationale supérieure agronomique de Toulouse [ENSAT], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ProdInra, Migration, Génomique, Biotechnologies végétales - Analyse phylogénomique des duplications géniques chez les poissons téléostéens: une approche par RNA-Seq - - PhyloFish2010 - ANR-10-GENM-0017 - Génomique - VALID, Institut de biologie de l'ENS Paris (UMR 8197/1024) (IBENS), Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), ANR-10-GENM-017 (PhyloFish), Agence Nationale de la Recherche, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
0301 basic medicine, [SDV]Life Sciences [q-bio], Lineage (evolution), poisson zèbre, [SDV.GEN] Life Sciences [q-bio]/Genetics, [MATH] Mathematics [math], Genome, 0302 clinical medicine, poisson, cyprinidae, Gene Duplication, Gene duplication, évolution génomique des poissons, [MATH]Mathematics [math], duplication des génomes, Zebrafish, ComputingMilieux_MISCELLANEOUS, Genetics, 0303 health sciences, teleost, biology, Fishes, Spotted gar, lepisosteus oculatus, oryzias latipes, [SDV] Life Sciences [q-bio], medaka, PhyloFish, transcriptome, zebrafish, danio rerio, Molecular Medicine, Neofunctionalization, teleosteen, expression des gènes, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [INFO] Computer Science [cs], Article, reproduction, Evolution, Molecular, 03 medical and health sciences, Species Specificity, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Animals, [INFO]Computer Science [cs], adrianichthyidae, 14. Life underwater, Gene, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, Whole genome sequencing, [SDV.GEN]Life Sciences [q-bio]/Genetics, lepisosteidae, génome, biology.organism_classification, [SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, 030104 developmental biology, Gene Expression Regulation, Evolutionary biology, lépisosté tacheté, fonction des gènes, Subfunctionalization, Animal Science and Zoology, 030217 neurology & neurosurgery, Developmental Biology
Abstract

Whole genome duplications (WGD) are important evolutionary events. Our understanding of underlying mechanisms, including the evolution of duplicated genes after WGD, however remains incomplete. Teleost fish experienced a common WGD (teleost-specific genome duplication, or TGD) followed by a dramatic adaptive radiation leading to more than half of all vertebrate species. The analysis of gene expression patterns following TGD at the genome level has been limited by the lack of suitable genomic resources. The recent concomitant release of the genome sequence of spotted gar (a representative of holosteans, the closest lineage of teleosts that lacks the TGD) and the tissue-specific gene expression repertoires of over 20 holostean and teleostean fish species, including spotted gar, zebrafish and medaka (the PhyloFish project), offered a unique opportunity to study the evolution of gene expression following TGD in teleosts. We show that most TGD duplicates gained their current status (loss of one duplicate gene or retention of both duplicates) relatively rapidly after TGD (i.e. prior to the divergence of medaka and zebrafish lineages). The loss of one duplicate is the most common fate after TGD with a probability of approximately 80%. In addition, the fate of duplicate genes after TGD, including subfunctionalization, neofunctionalization, or retention of two ‘similar’ copies occurred not only before, but also after the radiation of species tested, in consistency with a role of the TGD in speciation and/or evolution of gene function. Finally, we report novel cases of TGD ohnolog subfunctionalization and neofunctionalization that further illustrate the importance of these processes.

Published
2017
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31. Separate seasons of infection and reproduction can lead to multi-year population cycles

Author

Linda J. S. Allen, Frank M. Hilker, Frédéric Hamelin, T.A. Sun, Osnabrück University, Texas Tech University [Lubbock] (TTU), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Alexander von Humboldt-Stiftung, Niedersächsisches Ministerium für Wissenschaft und Kultur, National Science Foundation, Universität Osnabrück - Osnabrück University, Université de Rennes (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
0301 basic medicine, Statistics and Probability, SI model, Difference equations, [SDV]Life Sciences [q-bio], Population Dynamics, Zoology, Biology, Models, Biological, General Biochemistry, Genetics and Molecular Biology, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, Neimark-Sacker bifurcation, Quasi-periodic oscillation, General Immunology and Microbiology, Reproductive success, Host (biology), Reproduction, Applied Mathematics, Pathogen-driven outbreak, General Medicine, Host–pathogen dynamics, Fecundity, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy, Seasonal population dynamics, Fertility, 030104 developmental biology, Transmission (mechanics), Density dependence, Modeling and Simulation, Delayed density dependence, Population cycle, Seasons, General Agricultural and Biological Sciences, Epidemic model, 030217 neurology & neurosurgery
Abstract

International audience; Many host-pathogen systems are characterized by a temporal order of disease transmission and host reproduction. For example, this can be due to pathogens infecting certain life cycle stages of insect hosts; transmission occurring during the aggregation of migratory birds; or plant diseases spreading between planting seasons. We develop a simple discrete-time epidemic model with density-dependent transmission and disease affecting host fecundity and survival. The model shows sustained multi-annual cycles in host population abundance and disease prevalence, both in the presence and absence of density dependence in host reproduction, for large horizontal transmissibility, imperfect vertical transmission, high virulence, and high reproductive capability. The multi-annual cycles emerge as invariant curves in a Neimark-Sacker bifurcation. They are caused by a carry-over effect, because the reproductive fitness of an individual can be reduced by virulent effects due to infection in an earlier season. As the infection process is density-dependent but shows an effect only in a later season, this produces delayed density dependence typical for second-order oscillations. The temporal separation between the infection and reproduction season is crucial in driving the cycles; if these processes occur simultaneously as in differential equation models, there are no sustained oscillations. Our model highlights the destabilizing effects of inter-seasonal feedbacks and is one of the simplest epidemic models that can generate population cycles.

Published
2020
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32. Ferrate(VI) oxidation of pentachlorophenol in water and soil

Author

Olivier Monfort, Muhammad Usman, Khalil Hanna, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), University of Tübingen, Sultan Qaboos University (SQU), Agence de l'Environnement et de la Maîtrise de l'Energie, Alexander von Humboldt-Stiftung, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Environmental Engineering, Pentachlorophenol, Environmental remediation, Health, Toxicology and Mutagenesis, Iron, 0208 environmental biotechnology, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Water Purification, chemistry.chemical_compound, Ferrate(VI), Soil, Chemical oxidation, Environmental Chemistry, Soil Pollutants, [CHIM]Chemical Sciences, 0105 earth and related environmental sciences, Pollutant, Contaminated soils, Aqueous solution, Chemistry, Public Health, Environmental and Occupational Health, PCP Remediation, Water, General Medicine, General Chemistry, Hydrogen Peroxide, Persulfate, Oxidants, Pollution, Soil contamination, 6. Clean water, 020801 environmental engineering, Environmental chemistry, [SDE]Environmental Sciences, Environmental Pollution, Oxidation-Reduction, Water Pollutants, Chemical
Abstract

International audience; Although the use of ferrate (VI), an emerging green oxidant, has been widely investigated to remove organic pollutants in water, its ability to remediate contaminated soils has been scarcely evaluated. Here, we explore the use of ferrate (VI) to degrade a polychlorinated persistent compound, the pentachlorophenol (PCP), in aqueous solution and in an aged contaminated soil under batch, water-saturated and water-unsaturated flow conditions. The first results showed the prominent efficiency of ferrate (VI) over conventional oxidants (e.g. HO and persulfate) in both matrices and at different oxidant doses. In aqueous solution, more than 80% of PCP was degraded by ferrate (VI) while complete removal was observed in soil under batch conditions. In column experiments, PCP removal by ferrate (VI) remained efficient but dependent on the flow rate and water saturation. Maximum PCP removal (95%) in columns was observed under water saturated conditions when ferrate (VI) (0.2 g g of soil) was injected at a low flow rate (i.e. 0.025 mL min). This study has strong implications in the development of new sustainable processes based on ferrate (VI) for the remediation of different environmental compartments.

Published
2020
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33. $H^\infty$ calculus for submarkovian semigroups on weighted $L^2$ spaces

Author

Komla Domelevo, Christoph Kriegler, Stefanie Petermichl, Institut für Mathematik, Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU), Laboratoire de Mathématiques Blaise Pascal (LMBP), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Alexander von Humboldt Stiftung, ANR-17-CE40-0021,FRONT2017,Frontières de la théorie des opérateurs(2017), ANR-18-CE40-0021,HASCON,Analyse harmonique des semigroupes sur des espaces Lp commutatifs et non-commutatifs(2018), and Julius-Maximilians-Universität Würzburg (JMU)

Subjects
General Mathematics, [MATH.MATH-CA]Mathematics [math]/Classical Analysis and ODEs [math.CA], Space (mathematics), [MATH.MATH-FA]Mathematics [math]/Functional Analysis [math.FA], 01 natural sciences, Omega, Measure (mathematics), Functional calculus, weighted $L^p$ spaces, MSC 2010: 47A60, 47D03, 47D07, 46J15, 47B40, 0103 physical sciences, Classical Analysis and ODEs (math.CA), FOS: Mathematics, Calculus, 0101 mathematics, Bellman function, Mathematics, Generator (category theory), Semigroup, 010102 general mathematics, 47A60, 47D03, 47D07, 46J15, 47B40, Functional Analysis (math.FA), Mathematics - Functional Analysis, Mathematics - Classical Analysis and ODEs, Bounded function, markovian semigroups, 010307 mathematical physics, $H^\infty$ functional calculus, Weighted space
Abstract

Let $(T_t)_{t \geq 0}$ be a markovian (resp. submarkovian) semigroup on some $\sigma$-finite measure space $(\Omega,\mu)$. We prove that its negative generator $A$ has a bounded $H^\infty(\Sigma_\theta)$ calculus on the weighted space $L^2(\Omega,wd\mu)$ as long as the weight $w : \Omega \to (0,\infty)$ has finite characteristic defined by $Q^A_2(w) = \sup_{t > 0} \left\| T_t(w) T_t \left(w^{-1} \right) \right\|_{L^\infty(\Omega)}$ (resp. by a variant for submarkovian semigroups). Some additional technical conditions on the semigroup have to be imposed and their validity in examples is discussed. Any angle $\theta > \frac{\pi}{2}$ is admissible in the above $H^\infty$ calculus, and for some semigroups also certain $\theta = \theta_w < \frac{\pi}{2}$ depending on the size of $Q^A_2(w)$. The norm of the $H^\infty(\Sigma_\theta)$ calculus is linear in the $Q^A_2$ characteristic for $\theta > \frac{\pi}{2}$. We also discuss negative results on angles $\theta < \frac{\pi}{2}$. Namely we show that there is a markovian semigroup on a probability space and a $Q^A_2$ weight $w$ without H\"ormander functional calculus on $L^2(\Omega,w d\mu)$., Comment: Corrected display of abstract on arxiv

Published
2019

34. $H^\infty$ calculus for submarkovian semigroups on weighted $L^2$ spaces

Author

Domelevo, Komla, Kriegler, Christoph, Petermichl, Stefanie, Institut für Mathematik, Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU), Laboratoire de Mathématiques Blaise Pascal (LMBP), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Alexander von Humboldt Stiftung, ANR-17-CE40-0021,FRONT2017,Frontières de la théorie des opérateurs(2017), and ANR-18-CE40-0021,HASCON,Analyse harmonique des semigroupes sur des espaces Lp commutatifs et non-commutatifs(2018)

Subjects
MSC 2010: 47A60, 47D03, 47D07, 46J15, 47B40, markovian semigroups, $H^\infty$ functional calculus, [MATH.MATH-CA]Mathematics [math]/Classical Analysis and ODEs [math.CA], Bellman function, [MATH.MATH-FA]Mathematics [math]/Functional Analysis [math.FA], weighted $L^p$ spaces
Abstract

Let $(T_t)_{t \geq 0}$ be a markovian (resp. submarkovian) semigroup on some $\sigma$-finite measure space $(\Omega,\mu)$.We prove that its negative generator $A$ has a bounded $H^\infty(\Sigma_\theta)$ calculus on the weighted space $L^2(\Omega,wd\mu)$ as long as the weight $w : \Omega \to (0,\infty)$ has finite characteristic defined by $Q^A_2(w) = \sup_{t > 0} \left\| T_t(w) T_t \left(w^{-1} \right) \right\|_{L^\infty(\Omega)}$ (resp. by a variant for submarkovian semigroups).Some additional technical conditions on the semigroup have to be imposed and their validity in examples is discussed.Any angle $\theta > \frac{\pi}{2}$ is admissible in the above $H^\infty$ calculus, and for some semigroups also certain $\theta = \theta_w < \frac{\pi}{2}$ depending on the size of $Q^A_2(w)$.The norm of the $H^\infty(\Sigma_\theta)$ calculus is linear in the $Q^A_2$ characteristic for $\theta > \frac{\pi}{2}$.We also discuss negative results on angles $\theta < \frac{\pi}{2}$.Namely we show that there is a markovian semigroup on a probability space and a $Q^A_2$ weight $w$ without H\"ormander functional calculus on $L^2(\Omega,w d\mu)$.

Published
2019

35. Copper- and Cobalt-Catalyzed Syntheses of Thiophene-Based Tertiary Amines

Author

Bouarfa, Salima, Graβl, Simon, Ivanova, Maria, Langlais, Timothy, Bentabed-Ababsa, Ghenia, Lassagne, Frédéric, Erb, William, Roisnel, Thierry, Dorcet, Vincent, Knochel, Paul, Mongin, Florence, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Ludwig-Maximilians-Universität München (LMU), Université d'Oran 1 Ahmed Ben Bella [Oran], Institut de Chimie des Substances Naturelles (ICSN), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Ludwig Maximilian University [Munich] (LMU), Conseil National de la Recherche Scientifique, None, Université de Rennes 1, None, European Regional Development Fund, None, Alexander von Humboldt-Stiftung, NONE, Thermofisher, Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), and Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
[CHIM.ORGA]Chemical Sciences/Organic chemistry, [CHIM.CATA]Chemical Sciences/Catalysis
Abstract

International audience; Thienylzinc halides and related compounds prepared by deprotonation followed by transmetalation were used in copper-catalyzed amination using N-benzoyloxy secondary amines. By extending the reaction to 1,5-naphthyridine, it was showed that the competitive dimer formation observed in the case of thiophenes was linked with the low stability of some thienylamines rather than homocoupling. Interestingly, thienylzinc halides and related compounds prepared by transmetalation of thienylmagnesium halides, either prepared from their bromo-precursors or generated by deprotometalation, were satisfactorily employed in cobalt-catalyzed aminations. Finally, aminothiophenes were involved in copper-catalyzed mono-and diN -arylations, affording differently substituted di-and triphenylamines.

Published
2019
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36. Tobacco Use and Parental Monitoring—Observations from Three Diverse Island Nations—Cook Islands, Curaçao, and East Timor

Author

Kwok Ng, Michael Lowery Wilson, Masood Ali Shaikh, Zahra Zare, Karen L. Celedonia, and Alexander von Humboldt-Stiftung, Bonn, Germany

Subjects
Male, Parental monitoring, medicine.medical_specialty, Tobacco use, Adolescent, Timor-Leste, Health, Toxicology and Mutagenesis, lcsh:Medicine, Global problem, tobacco use, Article, Polynesia, 03 medical and health sciences, 0302 clinical medicine, Surveys and Questionnaires, Epidemiology, medicine, Humans, 030212 general & internal medicine, Parent-Child Relations, Socioeconomic status, Models, Statistical, 030505 public health, Parenting, Public health, Smoking, lcsh:R, Public Health, Environmental and Occupational Health, Curacao, Regression analysis, adolescent health, smoking consumption, parental monitoring, Geography, Regression Analysis, Female, epidemiology, 0305 other medical science, Adolescent health, Demography
Abstract

Tobacco use among adolescents is a global problem of public health importance. This study examined the profile of differences and similarities in adolescent tobacco use, and the role of parental monitoring activities among adolescents in three island nations of varying economic status: Cook Islands, Cura&ccedil, ao, and East Timor. Using nationally representative data we conducted regression modeling to determine the effect of four types of parental monitoring activities on tobacco use. Within a recall period of 30 days prior to being surveyed, 29.7% of students in East Timor, 21.6% in Cook Islands, and 13.1% in Cura&ccedil, ao reported having smoked cigarettes and/or used tobacco in other forms during 1 or more days during the preceding 30 days. Lower rates of parental monitoring as measured by four variables (parental understanding of problems and worries, knowing about how free time was being spent, going over things without approval, and checking to see if homework was done) were associated with higher percentages of adolescent tobacco use. Taken together the results underscore the need for increased parental involvement in programs which are designed to reduce tobacco use among adolescents.

Published
2020
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37. Science and transareality in Humboldt’s cosmos

Author

Damien Ehrhardt, Hélène FLEURY, Ehrhardt, Damien, Synergies Langues Arts Musique (SLAM), Université d'Évry-Val-d'Essonne (UEVE), Université Paris-Saclay, Centre d'Études de l'Inde et de l'Asie du Sud (CEIAS), École des hautes études en sciences sociales (EHESS)-Centre National de la Recherche Scientifique (CNRS), Projet Cosmopolitanism, https://cosmopolites.wixsite.com/cosmopolitanism, Alexander von Humboldt Stiftung, and Soraya Nour

Subjects
interdisciplinarité, Russie, [SDV]Life Sciences [q-bio], India, multidisciplinarity, [SHS]Humanities and Social Sciences, Russia, interdisciplinarity, transaréalité, transdisciplinarité, aires culturelles, Transfer studies, multidisciplinarité, Humboldt, transdisciplinarity, transareality, Cultural studies, Amérique latine, Area studies, aires disciplinaires, [SDV] Life Sciences [q-bio], Alexander von Humboldt, Latin America, études aréales, [SHS] Humanities and Social Sciences, Inde
Abstract

International audience; As an Enlightenment scientist, Alexander von Humboldt was continually observing, measuring, and describing the world. If he made major discoveries, nowadays he is mostly recognized as a father of biodiversity and a figure of interculturality and interdisciplinarity. The Humboldtian vision of the cosmos, characterized by its unity in diversity, is close to our ecological and planetary thought. His philosophy is based on the main currents of thought of his time in the West (the Enlightenment and Naturphilosophy), but is taking also into account those of the American continent. During his journey to the new continent, Humboldt was developing an in-depth knowledge of the whole cultural and natural area. On his other trip to Russia and Central Asia, he became familiar with other regions of the world, although his knowledge was not as deep on the cultural and social levels than on the scientific one. His dream of India could never come true: so he did not rely his approach of this area on fieldwork, but on knowledge spread by his brother and other Sanskrit philologists. The situation would certainly have been very different if had had the opportunity to go there. But as a specialist of several natural and cultural areas that he studies from a comparative perspective, Humboldt may be considered as a representative of ‘transareality’, a notion combining Ottmar Ette’s ‘transarea’ and Spivak’s ‘planetarity’. Humboldt’s approach brings together diverse regions of the world, but also different fields of knowledge that generally do not find themselves unite: science and aesthetics, cosmopolitics, physical description of the world and geopoetics. In addition, actualization of Humboldt’s vision may be crucial for our own society facing the challenges of the planet.

Published
2019

38. Ferrate(VI) based chemical oxidation for the remediation of aged PCB contaminated soil Comparison with conventional oxidants and study of limiting factors

Author

Olivier Monfort, Muhammad Usman, Khalil Hanna, Isabelle Soutrel, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Eberhard Karls Universität Tübingen = Eberhard Karls University of Tuebingen, University of Agriculture Faisalabad - UAF (PAKISTAN), N°1472C0030, ADEME, Agence de l'Environnement et de la Maîtrise de l'Energie, Alexander von Humboldt-Stiftung, Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)

Subjects
PCB contamination, Environmental remediation, General Chemical Engineering, Soil remediation, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Industrial and Manufacturing Engineering, chemistry.chemical_compound, Ferrate(VI), Chemical oxidation, Environmental Chemistry, Hydrogen peroxide, Peroxymonosulfate, Pollutant, Aqueous solution, Chemistry, [SDE.IE]Environmental Sciences/Environmental Engineering, General Chemistry, 021001 nanoscience & nanotechnology, Persulfate, Soil contamination, 6. Clean water, 0104 chemical sciences, 13. Climate action, Environmental chemistry, Degradation (geology), 0210 nano-technology, [CHIM.OTHE]Chemical Sciences/Other
Abstract

International audience; Ferrate (Fe(VI)) has emerged as an efficient oxidant to treat organic pollutants in aqueous solution. However, its application has never been assessed to remediate the contaminated soils. Here, we report the first study to use Fe(VI) for chemical oxidation of PCBs in historically contaminated soils obtained from an industrial wasteland. The first part of this study explores the efficiency of ferrate(VI) to degrade PCBs under various experimental conditions (liquid/solid ratio, oxidant dose, temperature and reaction time). Integrated application of Fe(VI) with conventional oxidants (hydrogen peroxide H2O2, persulfate S2O8 2− and peroxymonosulfate HSO5 −) was also tested. Conventional oxidants resulted in only 2–12% PCB degradation while Fe(VI) removed 30% of PCBs. Integrated use of Fe(VI) and conventional oxidants improved the degradation efficiency which was the highest (40% removal) by Fe(VI)/HSO5 −. This could be attributed to two-step degradation proceeding firstly by electron transfer with Fe(VI) followed by radical attack of conventional oxidants. To evaluate if PCB degradation is limited by soil factors, role of carbonate content, overall soil matrix, and PCB availability were assessed as a second part of this study. Negative role of soil matrix was highly prominent for conventional oxidants than Fe(VI). An increase in PCB availability improved the treatment efficiency (45% removal by Fe(VI) alone) highlighting the role of soil factors. All these results indicate the higher suitability and efficiency of Fe(VI) as compared to the conventional oxidants for soil remediation. Since use of Fe(VI) is innovative for both soil remediation and PCB oxidation, degradation mechanisms are also proposed.

Published
2019
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39. Testament Ronalda Dworkina

Author

Jerzy Zajadło, Górecki, Olgierd, Jerzy Zajadło, profesor zwyczajny, prawnik i filozof, kierownik Katedry Teorii i Filozofii Państwa i Prawa na Wydziale Prawa i Administrtacji Uniwersytetu Gdańskiego, autor ponad 300 opracowań naukowych, w tym m.in. monografii Formuła Radbrucha (Gdańsk 2001), Odpowiedzialność za Mur (Kraków 2003), Dylematy humanitarnej interwencji (Kraków 2005), Po co prawnikom filozofia prawa? (Warszawa 2008), Radbruch (Sopot 2016), Schmitt (Kraków 2016), Sędziowie i niewolnicy (Gdańsk 2017). Stypendysta Alexander von Humboldt Stiftung, członek-korespondent Polskiej Aka¬demii Umiejętności, and laureat nagród naukowych im. Heweliusza i im. Leona Petrażyckiego.

Subjects
filozofia polityki, Ronald Dworkin, wolność
Abstract

Autor tekstu omawia dwie prace filozofa prawa Ronalda Dworkina: "Sprawiedliwość według jeży" oraz "Religia bez Boga" uznając je za jego naukowy testament. Publikacja dofinansowana ze środków przyznanych w ramach dotacji dla Wydziału Prawa i Administracji Uniwersytetu Łódzkiego na rozwój młodych naukowców i doktorantów

Published
2019

40. Reconhecimento, desreconhecimento e demarcação simbólica: uma contribuição conceitual à análise do lado negativo do reconhecimento

Author

Luiz Gustavo da Cunha de Souza and CAPES/Alexander von Humboldt Stiftung

Subjects
Ciências Sociais, Sociologia, 05 social sciences, Group-based animosity, lcsh:HM401-1281, General Social Sciences, 06 humanities and the arts, Reconhecimento, Subcidadania, 0603 philosophy, ethics and religion, Demarcação simbólica, 0506 political science, derecognition, Desreconhecimento, Animosidade dirigida a grupos, Recognition, lcsh:Sociology (General), 060302 philosophy, 050602 political science & public administration, Symbolic demarcation, Second-class citizenship
Abstract

Resumo O presente artigo tem por objetivo central esboçar uma discussão teórica a respeito de relações de demarcação e hierarquização simbólicas que poderiam ser descritas por meio da categoria analítica de desreconhecimento. Este conceito, que será apresentado em relação aos recentes debates sobre a teoria do reconhecimento, conforme formulada por Axel Honneth, e sobre o lado negativo das relações de reconhecimento, visa explicitar formas de exercício do poder por meio das quais grupos privilegiados denegam a outros grupos ou indivíduos a possibilidade de participar em condições de igualdade das esferas institucionais de reconhecimento que legitimam as sociedades modernas. Neste sentido, as práticas e discursos de desreconhecimento representam uma negação intencional ou uma tentativa de solapar a aplicação dos princípios implícitos do liberalismo democrático e universalista, conforme pressuposto na tradição teórica do reconhecimento. Particular atenção será dada a dois casos de corrosão das normas implícitas de reconhecimento: em primeiro lugar, serão expostas formas de animosidade que buscam justificar estas práticas por meio do recurso à constituição de um imaginário sobre grupos diferentes, assim atribuindo a estes últimos certas características negativas; em segundo lugar, serão trabalhados alguns exemplos da tradição do pensamento social brasileiro e de um eventual aguçamento das tensões políticas e de suas consequências para as tentativas de demarcação simbólica observadas no país. Abstract The aim of this article is to prospectively review forms of symbolic demarcation based on the analytical category of derecognition. in Axel Honneth's theory of recognition but departs significantly from it. Thanks to this movement, it will be able to pay attention to the often overlooked dimension of negative relations of recognition, in which privileged groups or individuals manage to exert social power over other groups or individuals, whose social position is weaker, thus impeding these latter totake part on the symbolic spheres of recognition, which build up modern societies. Accordingly, such practices of symbolic demarcation of social barriers will be exposed as tendencies towards the undermining of the normative core of modernity (namely, its principles of equality and participation). Two cases will be exposed at length, in order to make the situation understandable: the problem of group stereotyping through group-focused animosity and the problem of second-class citizenship in Brazil.

Published
2018

41. Shear flows accelerate mixing dynamics in hyporheic zones and hillslopes

Author

Tanguy Le Borgne, Philippe Davy, Aditya Bandopadhyay, Indian Institute of Technology Kharagpur (IIT Kharagpur), Géosciences Rennes (GR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), ANR-14-CE04-0003-01, Agence Nationale de la Recherche, N/A, Alexander von Humboldt-Stiftung, Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), ANR-14-CE04-0003,subsurface mixing and reaction,Impact des processus de mélange sur les réactions biochimiques dans les environnements terrestres(2014), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)

Subjects
Biogeochemical cycle, Topographic relief, 010504 meteorology & atmospheric sciences, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], 0208 environmental biotechnology, Flow cell, 02 engineering and technology, Mechanics, 01 natural sciences, River bed, 020801 environmental engineering, Reaction rate, Geophysics, Shear (geology), 13. Climate action, General Earth and Planetary Sciences, Hyporheic zone, Surface water, Geology, 0105 earth and related environmental sciences
Abstract

International audience; Topographic relief and river bed forms generate nested streamline patterns, which drive the propagation and mixing at depth of changes in surface water concentration or temperature. While concentration distribution and biogeochemical reactions in such flow cells are often studied under steady state transport conditions, there is increasing evidence that transient mixing processes may have a significant contribution to effective mixing and reaction rates. Here we show that these streamline patterns act as shear flows, which significantly accelerate mixing dynamics within flow cells and can lead to the formation of transient mixing hot spots at depth. We provide analytical solutions that quantify the dynamics of mixing in a flow cell for a pulse and a front initial solute distribution, which represent two idealized end‐members of more complex solute distributions in natural systems. These results provide new insights into the patterns and dynamics of mixing at hyporheic zone, hillslope, and catchment scales.

Published
2018
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42. Adaptive Coordination-Driven Supramolecular Syntheses toward New Polymetallic Cu(I) Luminescent Assemblies

Author

Ali Moustafa Khalil, Eugene Yau-Hin Hong, Sloane Evariste, Mehdi Elsayed Moussa, Vivian Wing-Wah Yam, Hok-Lai Wong, Boris Le Guennic, Guillaume Calvez, Christophe Lescop, Karine Costuas, Alan Kwun-Wa Chan, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), The University of Hong Kong (HKU), Agence Nationale de la Recherche, HKU 17334216, Research Grants Council, University Grants Committee, University of Hong Kong, University Research Committee, University of Hong Kong, Ministère de l'Enseignement Supérieur et de la Recherche, AoE/P-03/08, University Grants Committee, Centre National de la Recherche Scientifique, Alexander von Humboldt-Stiftung, ANR-12-IS07-0002,P-OPTOELECTR-MOLMAT,Matériaux pi-conjugués à base de phosphore : conception, synthèse et assemblages supramoléculaires pour l'émission et la collecte de lumière, la communication électronique et le transport de charge.(2012), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010405 organic chemistry, Chemistry, Coordination polymer, Supramolecular chemistry, General Chemistry, Metallacycle, 010402 general chemistry, 01 natural sciences, Biochemistry, Fluorescence, Catalysis, 0104 chemical sciences, Metal, chemistry.chemical_compound, Crystallography, Colloid and Surface Chemistry, visual_art, visual_art.visual_art_medium, [CHIM]Chemical Sciences, Luminescence
Abstract

International audience; A thermally activated delayed fluorescence (TADF) tetrametallic Cu(I) metallacycle A behaves as a conformationally adaptive preorganized precursor to afford, through straightforward and rational coordination-driven supramolecular processes, a variety of room-temperature solid-state luminescent polymetallic assemblies. Reacting various cyano-based building blocks with A, a homometallic Cu(I) 1D-helical coordination polymer C and CuM discrete circular heterobimetallic assemblies D (M = Ni, Pd, Pt) are obtained. Their luminescence behaviors are studied, revealing notably the crucial impact of the spin-orbit coupling offered by the central M metal center on the photophysical properties of the heterobimetallic D derivatives.

Published
2018
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43. Acetyl Groups in Typha capensis: Fate of Acetates during Organosolv and Ionosolv Pulping

Author

Audu, Idi Guga, Brosse, Nicolas, Winter, Heiko, Hoffmann, Anton, Bremer, Martina, Fischer, Steffen, Laborie, Marie-Pierre, Laboratoire d'Etude et de Recherche sur le Matériau Bois (LERMAB), Université de Lorraine (UL), Freiburger Materialforschungszentrum, Albert-Ludwigs-Universität Freiburg, Technische Universität Dresden = Dresden University of Technology (TU Dresden), Alexander von Humboldt Stiftung (AvH), and ANR-11-LABX-0002,ARBRE,Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers(2011)

Subjects
native acetate, [CHIM.ORGA]Chemical Sciences/Organic chemistry, fungi, ionic liquid lignin, technology, industry, and agriculture, food and beverages, lignin, macromolecular substances, complex mixtures, Article, [SPI.MAT]Engineering Sciences [physics]/Materials, lcsh:QD241-441, [CHIM.POLY]Chemical Sciences/Polymers, lcsh:Organic chemistry, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Typha capensis, ethanol organosolv lignin, MWL
Abstract

During biomass fractionation, any native acetylation of lignin and heteropolysaccharide may affect the process and the resulting lignin structure. In this study, Typha capensis (TC) and its lignin isolated by milling (MWL), ionosolv (ILL) and organosolv (EOL) methods were investigated for acetyl group content using FT-Raman, 1H NMR, 2D-NMR, back-titration, and Zempl&eacute, n transesterification analytical methods. The study revealed that TC is a highly acetylated grass, extractive free TC (TCextr) and TC MWL exhibited similar values of acetyl content: 6 wt % and 8 wt % by Zempl&eacute, n transesterification, respectively, and 11 wt % by back-titration. In contrast, lignin extracted from organosolv and [EMIm][OAc] pulping lost 80% of the original acetyl groups. With a high acetyl content in the natural state, TC could be an interesting raw material in biorefinery in which acetic acid could become an important by-product.

Published
2018
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44. Asian monsoons and aridification response to Paleogene sea retreat and Neogene westerly shielding indicated by seasonality in Paratethys oysters

Author

Bougeois, Laurie, Dupont-Nivet, Guillaume, de Rafélis, Marc, Tindall, Julia C., Proust, Jean Noël, Reichart, Gert-Jan, de Nooijer, Lennart J., Guo, Zhaojie, Ormukov, Cholponbelk, Stratigraphy and paleontology, Stratigraphy & paleontology, Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Géosciences Environnement Toulouse (GET), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), School of Earth and Environment [Leeds] (SEE), University of Leeds, Royal Netherlands Institute for Sea Research (NIOZ), Key Laboratory for Orogenic Belts and Crustal Evolution, Peking University [Beijing], Central Asian Institute for Applied Geosciences (CAIAG), 864.08.005, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Alexander von Humboldt-Stiftung, 294282, Seventh Framework Programme, Ministère de l'Education Nationale, de l'Enseignement Superieur et de la Recherche, 649081, Horizon 2020 Framework Programme, 13-BS06-12-01, Agence Nationale de la Recherche, Ministère des Affaires Étrangères, Stratigraphy and paleontology, Stratigraphy & paleontology, Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)

Subjects
010504 meteorology & atmospheric sciences, bivalves, 010502 geochemistry & geophysics, Monsoon, Neogene, 01 natural sciences, Central Asia, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), ddc:550, aridification, 14. Life underwater, 0105 earth and related environmental sciences, Climate pattern, Humid continental climate, seasonality, Westerlies, Institut für Umweltwissenschaften und Geographie, 15. Life on land, Eocene monsoon, Bivalvia, Geophysics, Oceanography, 13. Climate action, Space and Planetary Science, Aridification, [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology, Paratethys sea, Climate model, Paleogene, Geology
Abstract

International audience; Asian climate patterns, characterised by highly seasonal monsoons and continentality, are thought to originate in the Eocene epoch (56 to 34 million years ago – Ma) in response to global climate, Tibetan Plateau uplift and the disappearance of the giant Proto-Paratethys sea formerly extending over Eurasia. The influence of this sea on Asian climate has hitherto not been constrained by proxy records despite being recognised as a major driver by climate models. We report here strongly seasonal records preserved in annual lamina of Eocene oysters from the Proto-Paratethys with sedimentological and numerical data showing that monsoons were not dampened by the sea and that aridification was modulated by westerly moisture sourced from the sea. Hot and arid summers despite the presence of the sea suggest a strong anticyclonic zone at Central Asian latitudes and an orographic effect from the emerging Tibetan Plateau. Westerly moisture precipitating during cold and wetter winters appear to have decreased in two steps. First in response to the late Eocene (34–37 Ma) sea retreat; second by the orogeny of the Tian Shan and Pamir ranges shielding the westerlies after 25 Ma. Paleogene sea retreat and Neogene westerly shielding thus provide two successive mechanisms forcing coeval Asian desertification and biotic crises.

Published
2018
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45. Magnetite and Green Rust: Synthesis, Properties, and Environmental Applications of Mixed-Valent Iron Minerals

Author

Muhammad Usman, Andreas Kappler, Silvia Orsetti, Khalil Hanna, A. Chaudhary, Stefan B. Haderlein, James M. Byrne, Christian Ruby, University of Tübingen, University of Agriculture Faisalabad - UAF (PAKISTAN), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Alexander von Humboldt-Stiftung, Institute of Advanced Study, Durham University, UK, Agence de l'Environnement et de la Ma??trise de l'Energie, France, Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)

Subjects
Abiotic component, Total organic carbon, Biogeochemical cycle, Mineral, Environmental remediation, Geomicrobiology, food and beverages, 02 engineering and technology, General Chemistry, 010501 environmental sciences, engineering.material, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, chemistry.chemical_compound, chemistry, 13. Climate action, Environmental chemistry, Green rust, engineering, 0210 nano-technology, [CHIM.OTHE]Chemical Sciences/Other, 0105 earth and related environmental sciences, Magnetite
Abstract

International audience; Mixed-valent iron [Fe(II)-Fe(III)] minerals such as magnetite and green rust have received a significant amount of attention over recent decades, especially in the environmental sciences. These mineral phases are intrinsic and essential parts of biogeochemical cycling of metals and organic carbon and play an important role regarding the mobility, toxicity, and redox transformation of organic and inorganic pollutants. The formation pathways, mineral properties, and applications of magnetite and green rust are currently active areas of research in geochemistry, environmental mineralogy, geomicrobiology, material sciences, environmental engineering, and environmental remediation. These aspects ultimately dictate the reactivity of magnetite and green rust in the environment, which has important consequences for the application of these mineral phases, for example in remediation strategies. In this review we discuss the properties, occurrence, formation by biotic as well as abiotic pathways, characterization techniques, and environmental applications of magnetite and green rust in the environment. The aim is to present a detailed overview of the key aspects related to these mineral phases which can be used as an important resource for researchers working in a diverse range of fields dealing with mixed-valent iron minerals.

Published
2018
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46. Highly controlled coating of biomimetic polydopamine in TiO2 nanotubes

Author

JeongEun Yoo, Gabriel Loget, Anca Mazare, Patrik Schmuki, Lei Wang, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), and Alexander von Humboldt-Stiftung

Subjects
Materials science, Nanotechnology, engineering.material, lcsh:Chemistry, chemistry.chemical_compound, Coating, chemistry, lcsh:Industrial electrochemistry, lcsh:QD1-999, Titanium dioxide, Electrochemistry, engineering, [CHIM]Chemical Sciences, Thin film, Photodegradation, Metal nanoparticles, Visible spectrum, lcsh:TP250-261
Abstract

Highly controlled coating of biomimetic polydopamine (PDA) was achieved on titanium dioxide nanotubes (TiO2 NTs) by exposing TiO2 NT arrays to a slightly alkaline dopamine solution. The thin films act as photonic sensitizers (enhancing photocurrents and photodegradation) in the visible light range. The PDA coatings can furthermore be used as a platform for decorating the TiO2 NTs with different co-catalysts and metal nanoparticles (NPs). Keywords: TiO2 nanotubes, Polydopamine, Sensitizer, Photoanode, Nanoparticle decoration

Published
2015
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47. DFT study of dihydrogen addition to molybdenum π-heteroaromatic complexes: a prerequisite step for the catalytic hydrodenitrogenation process

Author

Mikhail S. Nechaev, Evgenii O. Fetisov, Igor P. Gloriozov, Denis A. Kissounko, Yuri F. Oprunenko, Jean-Yves Saillard, Samia Kahlal, Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota [Twin Cities], University of Minnesota System-University of Minnesota System, Department of Chemistry, Moscow State University, Department of Science, Arapahoe Community College (ACC), A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences [Moscow] (RAS), ND Zelinsky Institute of Organic Chemistry [Moscow, Russia], Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes-Centre National de la Recherche Scientifique (CNRS), The authors thank Alexander von Humboldt Stiftung (Bonn, Germany) for providing the workstation and other software accessories to perform DFT calculations. This work was supported by Russian Science Foundation (RSF grant 14-50-00126)., University of Minnesota [Twin Cities] (UMN), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Hydride, Quinoline, chemistry.chemical_element, General Chemistry, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, Ring (chemistry), Photochemistry, Oxidative addition, Medicinal chemistry, Catalysis, Transition state, chemistry.chemical_compound, chemistry, Molybdenum, Materials Chemistry, Hydrodenitrogenation, [CHIM]Chemical Sciences
Abstract

International audience; The range of molybdenum hydride complexes that are sought to participate in the important catalytic hydrodenitrogenation process (HDN) of nitrogen containing polycyclic aromatic hydrocarbons were evaluated by DFT studies. The previously synthesized stable (η6-quinoline)Mo(PMe3)3 complex 1N, in which molybdenum is bonded to the heterocyclic ring, was chosen as a model. The hydrogenation of the quinone heterocycle, which was postulated as the initial step in the overall HDN reaction, is found to occur via three consecutive steps of the oxidative addition of dihydrogen to Mo in 1N. Successive transfer of hydrogen atoms from the metal to the heterocycle leads to the ultimate formation of the tetrahydrido molybdenum intermediate Mo(PMe3)4H413 and 2,2,3,3-tetrahydroquinoline C9H11N 14. All the involved intermediates and transition states have been fully characterized by DFT. This computational modeling of the hydrogenation of quinoline, as a part of extended HDN catalytic processes, provides a fundamental understanding of such mechanisms

Published
2015
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48. Captive gorillas’ manual laterality: The impact of gestures, manipulators and interaction specificity

Author

Stéphanie Barbu, Simone Pika, Catherine Blois-Heulin, Jacques Prieur, Ethologie animale et humaine (EthoS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Max Planck Institute for Ornithology, Alexander von Humboldt-Stiftung, French Ministry of Research and Technology, Rennes Metropole, VAS Doctoral School, Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Normandie Université (NU)-Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, Linguistics and Language, Study groups, Cognitive Neuroscience, Language origins, Experimental and Cognitive Psychology, Language and Linguistics, Functional Laterality, Social group, 03 medical and health sciences, Speech and Hearing, 0302 clinical medicine, biology.animal, [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology, Brain asymmetry, Animals, 0501 psychology and cognitive sciences, Primate, 050102 behavioral science & comparative psychology, Motor skill, Handedness, Non-human primates, Communication, Gorilla gorilla, biology, Gestures, [SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior, business.industry, [SCCO.NEUR]Cognitive science/Neuroscience, 05 social sciences, [SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences, Motor effectiveness, Animal Communication, Laterality, Animals, Zoo, Female, Social laterality, Psychology, business, Comprehension, 030217 neurology & neurosurgery, Actions, Gesture
Abstract

International audience; Relationships between humans’ manual laterality in non-communicative and communicative functions are still poorly understood. Recently, studies showed that chimpanzees’ manual laterality is influenced by functional, interactional and individual factors and their mutual intertwinement. However, what about manual laterality in species living in stable social groups? We tackled this question by studying three groups of captive gorillas (N = 35) and analysed their most frequent manual signals: three manipulators and 16 gesture types. Our multifactorial investigation showed that conspecific-directed gestures were overall more right-lateralized than conspecific-directed manipulators. Furthermore, it revealed a difference between conspecific- and human-directed gestural laterality for signallers living in one of the study groups. Our results support the hypothesis that gestural laterality is a relevant marker of language left-brain specialisation. We suggest that components of communication and of manipulation (not only of an object but also of a conspecific) do not share the same lateralised cerebral system in some primate species.

Published
2017
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49. Whole body and hematopoietic ADAM8 deficiency does not influence advanced atherosclerotic lesion development, despite its association with human plaque progression

Author

Yu Li, Christian Weber, Judith C. Sluimer, Jacob F. Bentzon, Andreas Ludwig, Marjo M. P. C. Donners, Thomas L. Theelen, Marion J.J. Gijbels, Joerg W. Bartsch, Jack P.M. Cleutjens, Yvonne Jansen, Erik A.L. Biessen, Emiel P. C. van der Vorst, Erwin Wijnands, Kosta Theodorou, Mike L. J. Jeurissen, Ine M. J. Wolfs, Pathologie, RS: CARIM - R3.06 - The vulnerable plaque: makers and markers, Moleculaire Genetica, Promovendi CD, MUMC+: DA CDL Algemeen (9), RS: NUTRIM - R2 - Liver and digestive health, RS: NUTRIM - R2 - Gut-liver homeostasis, Biochemie, RS: CARIM - R3.07 - Structure-function analysis of the chemokine interactome for therapeutic targeting and imaging in atherosclerosis, CARIM PhD-award, Deutsche Forschungsgemeinschaft (Alemania), Alexander von Humboldt-Stiftung, AII - Inflammatory diseases, ACS - Atherosclerosis & ischemic syndromes, and Medical Biochemistry

Subjects
0301 basic medicine, Genetically modified mouse, Pathology, medicine.medical_specialty, lcsh:Medicine, 030204 cardiovascular system & hematology, Biology, Granulocyte, PERIPHERAL-BLOOD, METALLOPROTEASE-DISINTEGRIN ADAM8, DENDRITIC CELLS, Article, Lesion, 03 medical and health sciences, 0302 clinical medicine, Immune system, Antigens, CD, medicine, Animals, Humans, MACROPHAGES, lcsh:Science, TUMOR-NECROSIS-FACTOR, Mice, Knockout, TRANSGENIC MICE, Metalloproteinase, Multidisciplinary, Gene Expression Profiling, lcsh:R, Membrane Proteins, Atherosclerosis, Immunohistochemistry, TNF-ALPHA, Plaque, Atherosclerotic, Mice, Inbred C57BL, ADAM Proteins, Haematopoiesis, Carotid Arteries, 030104 developmental biology, medicine.anatomical_structure, MYOCARDIAL-INFARCTION, Female, Tumor necrosis factor alpha, lcsh:Q, IMMUNE-SYSTEM, medicine.symptom, EXPRESSION ANALYSIS, ADAM8
Abstract

Scientific reports 7(1), 11670 (2017). doi:10.1038/s41598-017-10549-x, Published by Nature Publishing Group, London

Published
2017
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50. Environmental influences on the at-sea behaviour of a major consumer, Mirounga leonina, in a rapidly changing environment

Author

Marthán N Bester, M. E. I. Marquez, Joachim Plötz, Horst Bornemann, Daniel Steinhage, P J Nico de Bruyn, Ryan R. Reisinger, Trevor McIntyre, Alfred Wegener Institut Helmholtz-Zentrum für Polar-und Meeresforschung, and Alexander von Humboldt Stiftung

Subjects
Foraging, Temperature salinity diagrams, at-sea behaviour, King George Island, Oceanography, lcsh:Oceanography, Water column, Peninsula, Earth and Planetary Sciences (miscellaneous), Sea ice, Environmental Chemistry, Bathymetry, 14. Life underwater, foraging ecology, lcsh:GC1-1581, lcsh:Environmental sciences, General Environmental Science, lcsh:GE1-350, geography, geography.geographical_feature_category, Pelagic zone, Isla 25 de Mayo, biology, zoology, ecology, Southern elephant seals, 13. Climate action, satellite-relay data loggers, Environmental science, Hydrography
Abstract

Understanding the distribution and foraging ecology of major consumers within pelagic systems, specifically in relation to physical parameters, can be important for the management of bentho-pelagic systems undergoing rapid change associated with global climate change and other anthropogenic disturbances such as fishing (i.e., the Antarctic Peninsula and Scotia Sea). We tracked 11 adult male southern elephant seals ( Mirounga leonina ), during their five-month post-moult foraging migrations from King George Island (Isla 25 de Mayo), northern Antarctic Peninsula, using tags capable of recording and transmitting behavioural data and in situ temperature and salinity data. Seals foraged mostly within the Weddell–Scotia Confluence, while a few foraged along the western Antarctic Peninsula shelf of the Bellingshausen Sea. Mixed model outputs suggest that the at-sea behaviour of seals was associated with a number of environmental parameters, especially seafloor depth, sea-ice concentrations and the temperature structure of the water column. Seals increased dive bottom times and travelled at slower speeds in shallower areas and areas with increased sea-ice concentrations. Changes in dive depth and durations, as well as relative amount of time spent during the bottom phases of dives, were observed in relation to differences in overall temperature gradient, likely as a response to vertical changes in prey distribution associated with temperature stratification in the water column. Our results illustrate the likely complex influences of bathymetry, hydrography and sea ice on the behaviour of male southern elephant seals in a changing environment and highlight the need for region-specific approaches to studying environmental influences on behaviour. Keywords: Southern elephant seals; foraging ecology; satellite-relay data loggers; King George Island; Isla 25 de Mayo; at-sea behaviour To access the supplementary material for this article, please see the supplementary files in the column to the right (under Article Tools). (Published: 26 November 2014) Citation: Polar Research 2014, 33 , 23808, http://dx.doi.org/10.3402/polar.v33.23808

Published
2014

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