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The contribution of microorganisms and metazoans to mineral nutrition in bromeliads

Journal of Plant Ecology 2016年第3期9卷 241-255页

作者： céline Leroy Jean-François carrias régis céréghino Bruno corbara IrD UMR AMAP(botAnique et Modélisation de l’Architecture des Plantes et des végétations)Boulevard de la LirondeTA A‐51/PS2F‐34398 Montpellier Cedex 5France UMr Ecologie des Forêts de Guyane(AgroParisTech CIRADCNRSINRAUniversitéde GuyaneUniversitédes Antilles)Campus AgronomiqueBP 316F-97379 Kourou cedexFrance Universitéclermont Auvergne UniversitéBlaise PascalBP 10448F-63000 Clermont-FerrandFrance cNrS UMR 6023Laboratoire Microorganismes:Génome et EnvironnementCampus Universitaire des Cézeaux1 impasse Amélie MuratTSA 60026 CS *** Aubière cedexFrance Universitéde Toulouse INPUPS EcoLab(Laboratoire Ecologie Fonctionnelle et Environnement)F-31062 ToulouseFrance cNrS EcoLab118 Route de NarbonneF-31062 ToulouseFrance

Aims One critical challenge for plants is to maintain an adequate nutrient supply under fluctuating environmental *** is particularly true for epiphytic species that have limited or no access to the pedosphere and often live in harsh *** have evolved key innovations such as epiphytism,water-absorbing leaf trichomes,tank habit and crassulacean acid metabolism(cAM)photosynthesis that enable them to survive under various environmental *** encompass diverse ecological types that live on different substrates(they can be terrestrial,epilithic or epiphytic)and vary in their ability to retain water(they can be tank-forming or tankless)and photosynthetic pathway(i.e.c3 or cAM).In this review,we outline the nutritional modes and specializations that enable bromeliads to thrive in a wide range of nutrient-poor(mostly nitrogen-depleted)*** FindingsBromeliads have evolved a great diversity of morphologies and functional adaptations leading to the existence of numerous nutritional *** on species that have absorptive foliar trichomes,we review evidence that bromeliads have evolved multi-faceted nutritional strategies to respond to fluctuations in the supply of natural nitrogen(N).These plants have developed mutualistic associations with many different and functionally diverse terrestrial and aquatic microorganisms and metazoans that contribute substantially to their mineral nutrition and,thus,their fitness and *** and fungal microbiota-assisted N provisioning,protocarnivory,digestive mutualisms and myrmecotrophic pathways are the main strategies used by bromeliads to acquire *** combination of different nutritional pathways in bromeliads represents an important adaptation enabling them to exploit nutrient-poor ***,as has been shown for several other vascular plants,multiple partners are involved in nutrient acquisition indicating that there have been convergent adap

关键词： digestive mutualism insect-assisted nutrients leafδ15N multiple N sources myrmecotrophy

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cONVErGENcE OF NUMErIcAL ScHEMES FOr A cONSErVATION EQUATION WITH cONVEcTION AND DEGENErATE DIFFUSION

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Journal of computational Mathematics 2021年第3期39卷 428-452页

作者： r.Eymard c.Guichard Xavier Lhebrard Universite Gustave Eiffel Laboratoire d'nalyse et de Mathematiques Appliquees(UMR 8050)UGEUPECCNRSF-77454Mame-la-ValleeFrance Sorbonne Universite Universite Paris-Diderot SPCCNRSInriaLaboratoire Jacques-Louis Lionsequipe ANGEF-75005 Paris Ecole Normale Superieure de rennes France

The approximation of problems with linear convection and degenerate nonlinear difFusion,which arise in the framework of the transport of energy in porous media with thermodynamic transitions,is done usingθ-scheme based on the centred gradient discretisation *** convergence of the numerical scheme is proved,although the test functions which can be chosen are restricted by the weak regularity hypotheses on the convection field,owing to the application of a discrete Gronwall lemma and a general result for the time translate in the gradient discretisation *** numerical examples,using both the control Volume Finite Element method and the Vertex Approximate Gradient scheme,show the role ofθfor stabilising the scheme.

关键词： Linear convection Degenerate diffusion Gradient discretisation method θ-scheme

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Effects of environmental stressors on stem cells

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World Journal of Stem cells 2019年第9期11卷 565-577页

作者： Jessica r Worley Graham c Parker Department of Pediatrics Wayne State University School of Medicine

Environmental toxicants are ubiquitous,and many are known to cause harmful health ***,much of what we know or think we know concerning the targets and long-term effects of exposure to environmental stressors is sadly *** exposure may have health effects that are currently mischaracterized or at least mechanistically incompletely *** much of the recent excitement about stem cells(Scs)focuses on their potential as therapeutic agents,they also offer a valuable resource to give us insight into the mechanisms and risks of toxicant *** only as a response to the increasing ethical pressure to reduce animal testing,Sc studies allow us valuable insight into the true effects of human exposure to environmental stressors under controlled *** present a review of the history of publications on the effects of environmental stressors on Scs,followed by a consolidation of the literature over the past five years on a subset of key environmental stressors of importance to human health and their effects on both embryonic and tissue *** review will make constructive suggestions as to areas of toxicant research where further studies are needed,as well as making indications of the potential utility for advancing knowledge and directing research on environmental toxicology.

关键词： Environmental substances Toxic Stem cells Endocrine disruptors Alcohols Tobacco smoking Metals Heavy Particulate matter Volatile organic compounds Ozone

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Automation and digitization of agriculture using artificial intelligence and internet of things

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Artificial Intelligence in Agriculture 2021年第1期5卷 278-291页

作者： A.Subeesh c.r.Mehta IcAr-central Institute of Agricultural Engineering(cIAE) BhopalMadhya PradeshIndia

The growing population and effect of climate change have put a huge responsibility on the agriculture sector to increase food-grain production and *** most of the countries where the expansion of cropland is merely impossible,agriculture automation has become the only option and is the need of the *** of things and Artificial intelligence have already started capitalizing across all the industries including *** in these digital technologies has made revolutionary changes in agriculture by providing smart systems that can monitor,control,and visualize various farmoperations in real-time andwith comparable intelligence of human *** potential applications of IoT and AI in the development of smart farmmachinery,irrigation systems,weed and pest control,fertilizer application,greenhouse cultivation,storage structures,drones for plant protection,crop health monitoring,*** discussed in the *** main objective of the paper is to provide an overview of recent research in the area of digital technology-driven agriculture and identification of the most prominent applications in the field of agriculture engineering using artificial intelligence and internet of *** research work done in the areas during the last 10 years has been reviewed from the scientific databases including PubMed,Web of Science,and *** has been observed that the digitization of agriculture using AI and IoT hasmatured fromtheir nascent conceptual stage and reached the execution *** technical details of artificial intelligence,IoT,and challenges related to the adoption of these digital technologies are also *** will help in understanding how digital technologies can be integrated into agriculture practices and pave the way for the implementation of AI and IoT-based solutions in the farms.

关键词： Agriculture automation Artificial intelligence Deep learning Internet of things Smart farm machinery

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Identifying Influential communities Using IID for a Multilayer Networks

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Intelligent Automation & Soft computing 2023年第5期36卷 1715-1731页

作者： c.Suganthini r.Baskaran Department of computer Science and Engineering college of Engineering GuindyAnna UniversityChennaiTamilnaduIndia

In online social networks(OSN),they generate several speciﬁc user activities daily,corresponding to the billions of data points ***,although users exhibit signiﬁcant interest in social media,they are uninterested in the content,discussions,or opinions available on certain ***,this study aims to identify inﬂuential communities and understand user behavior across networks in the information diffusion *** media platforms,such as Facebook and Twitter,extract data to analyze the information diffusion process,based on which they cascade information among the individuals in the ***,this study proposes an inﬂuential information diffusion model that identiﬁes inﬂuential communities across these two social media ***-over,it addresses site migration by visualizing a set of overlapping communities using hyper-edge ***,the overlapping community structure is used to identify similar communities with identical user ***,the com-munity structure helps in determining the node activation and user inﬂuence from the information cascade ***,the Fraction of Intra/Inter-Layer(FIL)dif-fusion score is used to evaluate the efﬁciency of the inﬂuential information diffu-sion model by analyzing the trending inﬂuential communities in a multilayer ***,from the experimental result,it observes that the FIL diffusion score for the proposed method achieves better results in terms of accuracy,preci-sion,recall and efﬁciency of community detection than the existing methods.

关键词： Inﬂuential information diffusion model community detection inﬂuential communities social network

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Developing a Why–How Question Answering system on community web boards with a causality graph including procedural knowledge

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Information Processing in Agriculture 2016年第1期3卷 36-53页

作者： c.Pechsiri r.Piriyakul Department of Information Technology Dhurakij Pundit UniversityBangkokThailand Department of computer Science Ramkhamhaeng UniversityBangkokThailand

The research aims to develop an automatic Question Answering system,in particular Why and How questions,on community web-boards to support ordinary people in preliminary diagnosis and problem solving,such as plant disease *** research includes two main problems:Why and How question identification and Why and How answer determination,where Why and How questions are based on ***,the research applies machine learning techniques for question type *** also propose an integrated causality graph with extracted procedural knowledge from text to determine the visualized answers based on the information retrieval *** experiment shows the Question Answering system can achieve answers at rank 1 with 91.1%and 88.9%correctness for Why questions and How questions,respectively.

关键词： Why-Q How-Q Visualized answer Integrated causality graph

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Evolving treatment strategies for colorectal cancer: A critical review of current therapeutic options

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World Journal of Gastroenterology 2014年第4期20卷 877-887页

作者： Daniel c Damin Anderson r Lazzaron Division of coloproctology Department of Surgery Hospital de Clinicas de Porto Alegre Federal University of Rio Grande do Sul Postgraduate Program in Surgery Federal University of Rio Grande do Sul

Management of rectal cancer has markedly evolved over the last two *** technologies of staging have allowed a more precise definition of tumor *** in surgical concepts and techniques have resulted in higher rates of sphincter preservation and better functional outcome for patients with this ***,preoperative chemoradiotherapy followed by total mesorectal excision has become the standard of care for locally advanced tumors,many controversial matters in management of rectal cancer still need to be *** include the feasibility of a non-surgical approach after a favorable response to neoadjuvant therapy,the ideal margins of surgical resection for sphincter preservation and the adequacy of minimally invasive techniques of tumor *** this article,after an extensive search in PubMed and Embase databases,we critically review the current strategies and the most debatable matters in treatment of rectal cancer.

关键词： rectal cancer colorectal cancer Staging Sphincter preservation Neoadjuvant chemo-radiotherapy Surgery

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Presence of phthalates in gastrointestinal medications: Is there a hidden danger?

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World Journal of Gastroenterology 2013年第41期19卷 7042-7047页

作者： Zane r Gallinger Geoffrey c Nguyen Mount Sinai Hospital centre for Inflammatory Bowel Disease University of TorontoTorontoOntarioM5G 1X5Canada Division of Gastroenterology Johns Hopkins University School of MedicineBaltimoreMD 21287United States

Pharmaceutical companies that produce gastrointestinal(GI)medications often utilize phthalates for their ability to localize medication *** prescribed GI medications that may utilize phthalates are 5-Aminosalicylates,proton pump inhibitors,and pancreatic *** understanding of the cumulative health effects of phthalates from medications remains unclear,and there is increasing evidence that phthalates are not *** studies in animals have shown that phthalates,specifically dibutyl phthalate and Di-(2-ethyl-hexyl)phthalate,have the potential to alter and/or inhibit reproductive biology and in utero *** the lack of definitive human data,many cohort and cross-sectional studies demonstrate concerning associations between phthalates and poor health status,specifically developmental *** studies and studies with larger sample sizes are required to determine whether phthalates actually cause negative health *** is also important that physicians regularly review and discuss with patients the medicinal ingredients in their medications and supplements,specifically in pregnant woman with inflammatory bowel disease.

关键词： Phthalates Dibutyl phthalate 5-Aminosalicylates Medications Development Pregnancy

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The evolution of the atmosphere in the Archaean and early Proterozoic

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chinese Science Bulletin 2011年第1期56卷 4-13页

作者： NISBET Euan FOWLEr c Mary r Deptartment of Earth Sciences Royal HollowayUniversity of London

Key steps in atmospheric evolution occurred in the *** Hadean atmosphere was created by the inorganic processes of volatile accretion from space and degassing from the interior,and then modified by chemical and photochemical *** air was probably initially anoxic,though there may have been a supply of oxidation power as a consequence of hydrodynamic escape to space of hydrogen from *** subduction may have removed cO2 and the Hadean planet may have been *** the Archaean,as anoxygenic and then oxygenic photosynthesis evolved,biological activity remade the *** evidence implies there were liquid oceans despite the faint young *** oceans may have been sustained by the greenhouse warming effect of biologically-made *** in the late Archaean would have released free O2 into the *** would have created oxic surface waters,challenging the methane *** the Great Oxidation Event around 2.3 to 2.4 billion years ago,the atmosphere itself became oxic,perhaps triggering a glacial crisis by cutting methane-caused greenhouse *** the early Proterozoic,all the key biochemical processes that maintain the modern atmosphere were probably present in the microbial community.

关键词：晚太古代大气演化早元古代二氧化碳温室效应光化学过程微生物群落调制解调器

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cold-Sprayed Magnesium coatings Deposited with Helium and Air

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稀有金属材料与工程 2012年第S1期41卷 61-63页

作者： M P Planche r Bolot c coddet LErMPS University of Technology of Belfort-Monbeliard90010Belfort cedexFrance

cold-sprayed magnesium coatings have been little researched although cold spraying has been applied to deposit a large number of materials such as metals,metal matrix *** the present study,helium gas and air were employed as the propelling gases to deposit Mg coatings under the temperature of 600℃and 630℃.The effect of gas types on the coating microstructure was *** is much interesting to find that the particle deposition efficiency using helium gas as propelling gas is lower than that using *** suggests that strong erosion occurred during cold spraying using helium *** porosity of the coating using helium gas is lower than that using *** addition,the in-flight particle velocity was also simulated by the FLUENT software to explore the effect of gas *** modeled results show that the in-flight particle velocity using helium is higher than the erosion velocity of Mg particle.

关键词： cold spraying magnesium coating microstructure particle velocity electrochemical cell

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