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Anomalous elasticity of talc at high pressures:Implications for subduction systems

Geoscience Frontiers 2022年第4期13卷 34-47页

作者： Ye Peng Mainak Mookherjee Andreas Hermann Geeth Manthilake David Mainprice Earth Materials Laboratory Department of EarthOceanand Atmospheric SciencesFlorida State UniversityTallahasseeFL 32306USA Centre for Science at Extreme Conditions and SUPA School of Physics and AstronomyThe University of EdinburghEdinburgh EH93FDUK Laboratoire Magmas et Volcans CNRS IRDOPGCUniversitéClermont Auvergne63000 Clermont-FerrandFrance Geosciences Montpellier UMR CNRS 5243Universitéde MontpellierMontpellier 34095France

Talc is a layered hydrous silicate mineral that plays a vital role in transporting water into Earth’s interior and is crucial for explaining geophysical observations in subduction zone *** this study,we explored the structure,equation of state,and elasticity of both triclinic and monoclinic talc under high pressures up to 18 GPa using first principles simulations based on density functional theory corrected for dispersive *** results indicate that principal components of the full elastic constant tensor C_(11) and C_(22),shear components C_(66),and several off-diagonal components show anomalous pressure *** non-monotonic pressure dependence of elastic constant components is likely related to the structural changes and is often manifested in a polytypic transition from a low-pressure polytype talc-I to a high-pressure polytype talc-Ⅱ.The polytypic transition of talc occurs at pressures within its thermodynamic ***,the bulk and shear elastic moduli show no anomalous *** study also shows that talc has low velocity,extremely high anisotropy,and anomalously high V_(P)/V_(S) ratio,thus making it a potential candidate mineral phase that could readily explain unusually high V_(P)/V_(S) ratio and large shear wave splitting delays as observed from seismological studies in many subduction systems.

关键词： Talc Elasticity Seismic anisotropy Hydrous minerals Subduction zone

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Diagnostic description and geographic distribution of four new cryptic species of the blue-spotted maskray species complex(Myliobatoidei:Dasyatidae;Neotrygon spp.)based on DNA sequences

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Journal of Oceanology and Limnology 2018年第3期36卷 827-841页

作者： Philippe BORSA Irma S.ARLYZA Thierry B.HOAREAU Kang-Ning SHEN Institut de Recherche pour le Développement(ird) UMR 250"Ecologie Marine Tropicale des Oceans Pacifique et Indien"BP A598848 NouméaNew Caledonia Lembaga Ilmu Pengetahuan Indonesia(LIPI) Pusat Penelitian Oseanografi(P20)JakartaIndonesia Molecular Ecology and Evolution Programme Department of GeneticsUniversity ofPretoriaPretoriaSouth Africa Aquatic Technology Laboratories Agricultural Technology Research InstituteTaiwanChina

Nine morphologically similar but genetically distinct lineages in the blue-spotted maskray species complex, previously Neotrygon kuhlii(Müller and Henle) qualify as cryptic species. Four of these lineages have been previously described as N eotrygon australiae Last, White and Séret, N eotrygon caeruleopunctata Last, White and Séret, N eotrygon orientale Last, White and Séret, and N eotrygon varidens(Garman), but the morphological characters used in the descriptions off ered poor diagnoses and their geographic distributions were not delineated precisely. The objective of the present work is to complete the description of the cryptic species in the complex. Here, an additional four lineages are described as new species on the basis of their mitochondrial DNA sequences: Neotrygon bobwardi, whose distribution extends from the northern tip of Aceh to the western coast of Sumatera; N eotrygon malaccensis, sampled from the eastern part of the Andaman Sea and from the Malacca Strait; N eotrygon moluccensis, from the eastern half of the Banda Sea; and Neotrygon westpapuensis from the central portion of northern West Papua. The geographic distributions of N. australiae, N. coeruleopunctata, N. orientale, and N. varidens are updated. For each species, a diagnosis is provided in the form of a combination of private or partly-private nucleotides at 2–4 nucleotide sites along a 519-base pair fragment of the CO1 gene. We believe that the present taxonomic revision will provide information relevant to the sound management and conservation of cryptic species of the blue-spotted maskray in the Coral Triangle region.

关键词： molecular taxonomy diagnosis distribution

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Evaluation of Radarsat-2 quad-pol SAR time-series images for monitoring groundwater irrigation

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International Journal of Digital Earth 2019年第10期12卷 1177-1197页

作者： Amit Kumar Sharma Laurence Hubert-Moy Buvaneshwari Sriramulu M.Sekhar Laurent Ruiz S.Bandyopadhyay Shiv Mohan Samuel Corgne Univ Rennes UMR LETG CNRSRennesFrance Indo-French Cell for Water Science Indian Institute of ScienceBangaloreIndia Department of Civil Engineering Indian Institute of ScienceBangaloreIndia UMR 1069 SAS INRAAgro-campus OuestRennesFrance Géosciences Environnement Toulouse Universitéde ToulouseCNRSIRDToulouseFrance EOS Indian Space Research OrganizationBangaloreIndia PLANEX Physical Research LaboratoryAhmedabadIndia

Groundwater assists farmers to irrigate crops for fulfilling the crop-water *** agriculture system is characterized by three cropping seasons known as Kharif(monsoon),Rabi(post-monsoon)and summer(pre-monsoon).In tropical countries like India,monitoring cropping practices using optical remote sensing during Kharif and Rabi seasons is constraint due to the cloud cover,which can be well addressed by microwave remote *** the proposed research,the strength of C-band polarimetric Synthetic Aperture Radar(SAR)time series images were evaluated to classify groundwater irrigated croplands for the Kharif and Rabi cropping seasons of the year *** present study was performed in the Berambadi experimental watershed of Kabini river basin,southern peninsular India.A total of fifteen polarimetric variables were estimated includes four backscattering coefficients(HH,HV,VH,VV)and eleven polarimetric indices for all Radarsat-2 SAR *** cumulative temporal sum(seasonal and dual-season)of these parameters was supervised classified using Support Vector Machine(SVM)classifier with intensive ground observation *** results using the best equation(highest accuracy and kappa)shows that the Kharif,Rabi and irrigated double croplands are respectively 9.58 km2(20.6%),16.14 km2(34.7%)and 6.22 km2(13.4%)with a kappa coefficient respectively 0.84,0.74 and 0.94.

关键词： Radarsat-2 Synthetic Aperture Radar Polarimetric Indices Irrigated Cropland Support Vector Machine Classifier Kabini Critical Zone Observatory

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Host evolution in Mastomys natalensis(Rodentia:Muridae):An integrative approach using geometric morphometrics and genetics

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Integrative Zoology 2015年第6期10卷 505-514页

作者： Aude LALIS Allowen EVIN Marc JANIER Lamine KOIVOGUI Christiane DENYS UMR 7205 Institute of Systematic Evolution and Biodiversity(ISYEB)National Museum of Natural History CNRSSorbonne UniversitiesParisFrance Institute of Evolutionary Sciences-Montpellier(ISEM) University of MontpellierCNRSIRDEPHEMontpellierFrance Department of Archaeology University of AberdeenAberdeenUK Plateforme ANIMAGE-CREATIS Faculty of Medicine Lyon-EstClaude Bernard University Lyon 1LyonFrance National Institute of Public Health Guinea CHU DonkaConakryGuinea

The commensal rodent Mastomys natalensis is the natural reservoir of Lassa arenavirus(LASV),which causes hemorrhagic fever in West *** study a possible effect of the virus on phenotypic and genotypic variation of its persistently infected host,we compared LASV-positive and non-infected wild-caught *** LASV effects on the phenotypic variation were explored using standard external morphometric measurements,geometric morphometric analyses of the cranial size and shape,and brain case *** genetic variability of *** specimens was assessed using 9 polymorphic microsatellite *** of sex and age,LASV-infected animals had smaller external body measurements,reproductive organs,skull size and brain case *** shape differences between the 2 groups are represented by a lateral constriction of the entire *** genetic variability revealed consanguinity only among the LASV-positive *** hypothesize that growth impairment may result in a selective disadvantage for LASV-infected ***,leading to a preferably commensal lifestyle in areas where the LAVS is endemic and,thereby,increasing the risk of LASV transmission to humans.

关键词： host evolution genetic diversity inbreeding skull shape variation

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Impact,economic evaluation,and sustainability of integrated vector management in urban settings to prevent vector-borne diseases:a scoping review

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Infectious Diseases of Poverty 2018年第1期7卷 830-843页

作者： Jorge Marcos-Marcos Antonio Olry de Labry-Lima Silvia Toro-Cardenas Marina Lacasaña Stephanie Degroote Valery Ridde Clara Bermudez-Tamayo Public Health Research Group University of AlicanteAlicanteSpain Andalusian School of Public Health GranadaSpain Biomedical Research Centre Network for Epidemiology and Public Health(CIBERESP) MadridSpain Biomedical Research Centre(ibs.GRANADA) GranadaSpain Public Health Research Institute(IRSPUM) University of MontrealMontrealQuebecCanada ird(French Institute for Research on Sustainable Development) CEPED(IRD-Universite Paris Descartes)Universites Paris Sorbonne CitesERL INSERM SAGESUDParisFrance

Background:The control of vector-borne diseases(VBD)is one of the greatest challenges on the global health *** and uncontrolled urbanization has heightened the interest in addressing these challenges through an integrated vector management(IVM)*** aim was to identify components related to impacts,economic evaluation,and sustainability that might contribute to this integrated approach to VBD *** body:We conducted a scoping review of available literature(2000-2016)using PubMed,Web of Science,Cochrane,CINAHL,Econlit,LILACS,Global Health Database,Scopus,and Embase,as well as Tropical Diseases Bulletin,WHOLIS,WHO Pesticide Evaluation Scheme,and Google *** terms and free-text terms were used.A data extraction form was used,including TIDieR and *** and CHEERS were used to evaluate *** the 42 documents reviewed,30 were focused on dengue,eight on malaria,and two on *** than a half of the studies were conducted in the *** used a quantitative descriptive approach(n=21),followed by cluster randomized controlled trials(n=11).Regarding impacts,outcomes were:a)use of measures for vector control;b)vector control;c)health measures;and d)social *** reduced breeding sites,the entomology index,and parasite *** were heterogeneous,with variable magnitudes,but in all cases were favourable to the *** of IVM impacts on health outcomes was very limited but showed reduced *** outcomes were improved abilities and capacities,empowerment,and community *** economic evaluation,only four studies performed an economic analysis,and intervention benefits outweighed *** was dependent on illness *** results provided key elements to analyze sustainability in terms of three dimensions(social,economic,and environmental),emphasizing the implementation of a community-focused eco-bio-social ***:IVM has an impact on redu

关键词： Vector-borne diseases Integrated vector management Urban health Intervention Scoping review

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Potential Impact of Climate Change on the Sediment Fluxes of a Watershed in West Africa: Cas of the Aghien Lagoon, Côte d’Ivoire

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Atmospheric and Climate Sciences 2022年第1期12卷 18-30页

作者： Wa Kouakou Charles N’dri Séverin Pistre Kan Jean Kouamé Jean Patrice Jourda Laboratory of Sciences and Techniques of Water and Environment Felix Houphouet-Boigny University of Cocody-Abidjan Abidjan C&#244 te d’Ivoire Laboratory HSM IRD CNRS University of Montpellier Montpellier France

The semi-distributed SWAT (Soil and Water Assessment Tools) model was used in this study to model the sediment yield in the watershed of the Aghien lagoon with an area of 365 km2, located in the north of the district of Abidjan (South-East from C?te d’Ivoire). A sensitivity and uncertainty analysis, as well as calibration of the SWAT model, was conducted using the Sequential Uncertainty Adjustment Procedure (SUFI-2) which is one of the programs interfaced with SWAT in the SWAT-Cup package (SWAT-Calibration-Uncertainty Programs). Five parameters of the SWAT model were found to be more sensitive to sediment fluxes. These have been modified (calibration) sparingly in order to improve the reproduction of observed sediments data. Two measures were used to assess the uncertainty analysis of the model: P-factor and R-factor. The R2 and Nash-Sutcliffe (NS) coefficients of determination were used to assess the quality of the calibration. The P-factor obtained is 0.58 and the R-factor is 2.28. The NS and R2 coefficients in calibration over the period from June 2014 to January 2015 are 0.51 and 0.86 respectively. These values indicate correct consideration of uncertainties by the model and satisfactory calibration of the SWAT model for solid fluxes. Then, the model was used to simulate the sediment fluxes at the horizons 2040 (2035-2056), 2060 (2057-2078) and 2080 (2079-2100) in order to assess the impact of climate

关键词： Abidjan Aghien Calibration Climate Change Côte d’Ivoire Sediment SUFI-2 SWAT

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Comparative Study of the Effects of Thermal and Photochemical Accelerated Oxidations on Quality of “Green Type” and “Black Type” French Olive Oils

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American Journal of Analytical Chemistry 2016年第12期7卷 890-907页

作者： Jérôme Plard Yveline Le Dréau Catherine Rébufa Nathalie Dupuy Aix Marseille Université CNRS IRD Avignon Universit&eacute IMBE UMR 7263 &eacute quipe BEC case 451 Avenue Escadrille Normandie Ni&eacute men 13397 Marseille cedex 20 France

Oxidative stability of two commercial olive oils of different specificity (green type and black type) has been studied during thermal and photochemical accelerated processes through the evolution of quality indices. It might help to assure a good utilisation of olive oil. In most of works described in literature, they are measured individually. In this study, a Principal Component Analysis (PCA) has been performed to emphasize their variation and describe in concise way the quality and the safety of extra-virgin olive oil after two oxidative stresses. No difference had been detected between both type oils when they are heated. Peroxides, aldehydes and conjugated dienes and trienes were formed but rapidly degraded into final oxidation compounds, mainly acid compounds. During the photochemical process, similar changes occurred slower and the green type oil had shown better stability because of its higher phenolic content. The fatty acids had been more impacted (higher disappearance of monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA)) when the oils were heated than when irradiated. Saturated fatty acids (SFA), MUFA and PUFA were the most relevant indicators to characterize non-oxidized oils and PV characterized the early stage of oil oxidation.

关键词： Olive Oil Photo-Oxidation Thermal Oxidation Quality Control Parameters Fatty Acids Phenolic Compounds

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Swarm Theory, Hydraulic Fracturing, and the Emergence of Natural Spacing within Dyke Swarms

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Acta Geologica Sinica(English Edition) 2016年第S1期90卷 141-142页

作者： Andrew P.BUNGER Thierry MENAND Alexander CRUDEN ZHANG Xi Henry HALLS Department of Civil and Environmental Engineering University of Pittsburgh Department of Chemical and Petroleum Engineering University of Pittsburgh Laboratoire Magmas et Volcans Université Blaise Pascal–CNRS–IRD OPGC School of Geosciences Monash University CSIRO Energy Department of Chemical and Physical Sciences University of Toronto at Mississauga

Like all swarming behavior in Nature,the selforganization expressed by the emergence of a natural spacing among a swarm’s members should be considered its most fundamental characteristic,and grasping the

关键词： Swarm Theory Hydraulic Fracturing

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Appadtion of the NAC Transcription Factors Predates the Emergence of Land Plants

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Molecular Plant 2016年第9期9卷 1345-1348页

作者： Aude Maugarny-Cales Beatriz Gonqalves Stefan Jouannic Michael Melkonian Gane Ka-Shu Wonge Patrick Laufs Institut Jean-Pierre Bourgin INRA AgroParisTech CNRS Universite ParisSaclay RD10 78026 Versailles Cedex France Univ. Pads-Sud Universite Paris-Saclay 91405 Orsay France ird UMR DIADE 911 Avenue Agropolis BP6450134394 Mbntpellier Cedex 5 France LMI RICE IRD USTH National Key Laboratory for Plant Cell Biotechnology Agronomical Genetics Institute Pham Van Dong Road Hanoi Vietnam Botany Department Cologne Biocenter University of Cologne 50674 Cologne Germany Beijing Genomics Institute-Shenzhen Shenzhen 518083 China Department of Biological Sciences University of Alberta Edmonton AB T6G 2E9 Canada Department of Medicine University of Alberta Edmonton AB T6G 2E Canada These authors contributed equally to this article.

Dear Editor The NAC （for NO APICAL MERISTEM [NAM], Arabidopsis TRANSCRII^TION ACTIVATOR FACTOR [ATAF] and CUP- SHAPED COTYLEDON [CUC]） proteins are one of the largest families of plant-specific transcription factors （Nagata et aL, 2015）. They are involved in many different biological processes including development and the response to biotic and abiotic stresses. To date, NAC transcription factors have only been identified in land plants （Zhu et al., 2012; Nagata et al., 2015）; and some of them control land-plant-specific processes, such as the formation of specialized water-conducting systems （Xu et al., 2014）. Therefore, it has been suggested that their appearance accompanied the emergence of land plants. Here, we exploited the transcriptomic data generated within the 1000 plants project （***, Wickett et al., 2014） to revisit the origin of NAC proteins. Our careful analysis shows that NAC transcription factors appeared before the ernergence of land plants as we detected their homologs in several groups of streptophyte green algae. The possible significance of this finding is discussed.

关键词： ADAPTATION ORIGIN

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Assessment of Regional Climate Models over Côte D'Ivoire and Analysis of Future Projections over West Africa

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Atmospheric and Climate Sciences 2015年第2期5卷 63-81页

作者： Kouakou Kouadio Abdourahamane Konare Adama Diawara Bernard Kouakou Dje Vincent Olanrewaju Ajayi Arona Diedhiou Laboratoire de Physique de l’Atmosphère et Mécanique de Fluide (LAPA-MF) Université Felix Houphou&#235t-Boigny Abidjan C&#244te d’Ivoire Laboratoire de Physique de l’Atmosphère et Mécanique de Fluide (LAPA-MF) Université Felix Houphou&#235t-Boigny Abidjan d’Ivoire Société d’exploitation et développement Aéroportuaire et Météorologique Abidjan C&#244te d’Ivoire WASCAL Graduate Research Program on West African Climate System (GRP-WACS) Federal University of Technology Akure (FUTA) Akure Nigeria lthe-ird Université de Grenoble Grenoble France

The ability of six Regional Climate Models (RCMs) used in AMMA-ENSEMBLES project is assessed over six meteorological stations in Côte d’Ivoire. The ensemble mean of the models is also used for the prediction of climate change over West Africa. The study focused on two periods: the period 1995-2005, the present-day simulations, is used to evaluate the skills of the models over the country and the years 2010-2013, for assessment of the future climate change scenario used. The results show that the skills of the models vary from one station to another and from one season to another. None of the models considered, presents an excellent performance over the entire country and in all the seasons. Generally, the ensemble mean of all the models presents better results when compared with the observation. These results suggest that the choice of any model for study over the country may depend on the focus of interest: intensity or variability of the rain and also on area of interest. The projection for 2020-2040, future climate change over West Africa shows that the Sahel exhibits a tendency to be drier while wetter Guinean coast is observed.

关键词： AMMA Ensembles West Africa Monsoon Regional Climate Models Precipitation

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