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Absorbing Boundary Conditions for Solving N-Dimensional Stationary Schr¨odinger Equations with Unbounded Potentials and Nonlinearities

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Communications in Computational Physics 2011年第10期10卷 1280-1304页

作者： Pauline Klein Xavier Antoine christophe Besse Matthias Ehrhardt Institut Elie CartanNancy Nancy-UniversiteCNRSUMR 7502INRIA CORIDA TeamBoulevard des Aiguillettes B.P.23954506 Vandoeuvre-les-NancyFrance Laboratoire Paul Painleve CNRS UMR 8524Simpaf Project Team-Inria CR Lille Nord EuropeUniversite des Sciences et Technologies de LilleCite Scientifique59655 Villeneuve d’Ascq CedexFrance Lehrstuhl fur Angewandte Mathematik und Numerische Analysis Fachbereich C-Mathematik und NaturwissenschaftenBergische Universitat WuppertalGaußstr.2042119 WuppertalGermany

We propose a hierarchy of novel absorbing boundary conditions for the onedimensional stationary Schr¨odinger equation with general(linear and nonlinear)*** accuracy of the new absorbing boundary conditions is investigated numerically for the computation of energies and ground-states for linear and nonlinear Schr¨odinger *** turns out that these absorbing boundary conditions and their variants lead to a higher accuracy than the usual Dirichlet boundary ***,we give the extension of these ABCs to N-dimensional stationary Schr¨odinger equations.

关键词： Absorbing boundary conditions stationary Schrodinger equations unbounded domain spatially dependent potential ground states computation

3D models of dilated cardiomyopathy:Shaping the chemical,physical and topographical properties of biomaterials to mimic the cardiac extracellular matrix

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Bioactive Materials 2022年第1期7卷 275-291页

作者： Marie Camman Pierre Joanne Onnik Agbulut christophe Helary Sorbonne Universit´e CNRSUMR 7574Laboratoire de Chimie de la Matiere Condensee de Paris4 place Jussieu(case 174)F-75005ParisFrance Sorbonne Universite Institut de Biologie Paris-Seine(IBPS)CNRS UMR 8256Inserm ERL U1164Biological Adaptation and Ageing7 quai St-Bernard(case 256)F-75005ParisFrance

The pathophysiology of dilated cardiomyopathy(DCM),one major cause of heart failure,is characterized by the dilation of the heart but remains poorly understood because of the lack of adequate in vitro *** 2D models do not allow for the 3D organotypic organization of cardiomyocytes and do not reproduce the ECM *** this review,the different strategies to mimic the chemical,physical and topographical properties of the cardiac tissue affected by DCM are *** advantages and drawbacks of techniques generating anisotropy required for the cardiomyocytes alignment are *** addition,the different methods creating macroporosity and favoring organotypic organization are ***,the advances in the induced pluripotent stem cells technology to generate cardiac cells from healthy or DCM patients will be *** to the biomaterial design,some features of the DCM extracellular matrix such as stiffness,porosity,topography or chemical changes can impact the cardiomyocytes function in vitro and increase their *** mimicking the affected heart,both at the cellular and at the tissue level,3D models will enable a better understanding of the pathology and favor the discovery of novel therapies.

关键词： Biomaterials Dilated cardiomyopathies Induced pluripotent stem cells Porosity Anisotropy

A multi-layer modelling approach for mining versatile ports of a global maritime transportation network

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International Journal of Digital Earth 2023年第1期16卷 2129-2151页

作者： Peng Peng christophe Claramunt Shifen Cheng Yu Yang Feng Lu State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China Naval Academy Research Institute Brest NavalFrance Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijingPeople’s Republic of China The Academy of Digital China Fuzhou UniversityFuzhouPeople’s Republic of China Jiangsu Center for Collaborative Innovation in Giographical Information Resource Development and Application NanjingPeople’s Republic of China

International ports play critical roles in maintaining transportation flows and sustaining the effectiveness of global maritime *** the concept of versatile ports has been introduced to represent the specific patterns that these ports play at the regional and global levels,there is still a need for the design and development of computational approaches that support these *** paper introduces a flexible multi-layer network approach for an international maritime network whose interest is that it offers a flexible model that favours the identification of the different transportation flows and versatile *** model is complemented by a series of structural indices complemented by a new overlap measure that evaluates the specific role of a given port across various transportation *** whole approach is implemented and experimented with using massive AIS maritime data that supports the automatic generation of the multi-layer network,and derivation of the structural measures while maintaining a flexible view of the maritime *** experiments applied to the global maritime transportation network identify key versatile ports and highlight significant differences at the regional and trade flow levels.

关键词： Versatile port multilayer network aggregated network maritime transportation vessel trajectory data

Nodular fasciitis of the external auditory canal: Clinical case report and review of the literature

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中华耳科学杂志:英文版 2023年第4期18卷 240-245页

作者： Adrien Philippart Jean-christophe Degols Jacques Vilain Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Luc University HospitalCatholic University of LouvainAvenue Hippocrate 101200BrusselsBelgium Chief of Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Pierre Clinic OttigniesAvenue Reine Fabiola 91340Ottignies-Louvain-la-NeuveBelgium Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Pierre Clinic Ottignies Avenue Reine Fabiola 91340Ottignies-Louvain-la-NeuveBelgium

Nodular fasciitis is a benign reactive soft tissue tumor arising from fibroblasts and *** incidence is low and misdiagnosis is frequent especially for malignant *** can lead to inappropriate and unnecessary invasive *** fasciitis of the external auditory canal is extremely *** far,around fifteen cases have been *** present here the case of a 90-year-old patient with nodular fasciitis of the right external auditory *** lesion extends anteriorly for 6.5 cm and reaches the posterior wall of the maxillary *** our knowledge,this is the first case in the literature of an external auditory canal nodular fasciitis presenting as an inflammatory ear polyp with such a wide extension.

关键词： Nodular fasciitis External ear canal Polyp

Epigenetic control of meiotic recombination in plants

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Science China(Life Sciences) 2015年第3期58卷 223-231页

作者： YELINA Natasha DIAZ Patrick LAMBING christophe HENDERSON Ian R. Department of Plant Sciences University of Cambridge

Meiotic recombination is a deeply conserved process within eukaryotes that has a profound effect on patterns of natural genetic variation. During meiosis homologous chromosomes pair and undergo DNA double strand breaks generated by the Spo11 endonuclease. These breaks can be repaired as crossovers that result in reciprocal exchange between chromosomes. The frequency of recombination along chromosomes is highly variable, for example, crossovers are rarely observed in heterochromatin and the centromeric regions. Recent work in plants has shown that crossover hotspots occur in gene promoters and are associated with specific chromatin modifications, including H2 A.Z. Meiotic chromosomes are also organized in loop-base arrays connected to an underlying chromosome axis, which likely interacts with chromatin to organize patterns of ***, epigenetic information exerts a major influence on patterns of meiotic recombination along chromosomes, genetic variation within populations and evolution of plant genomes.

关键词： meiosis recombination epigenetic crossover chromatin

NumericalMethods for Balance Laws with Space Dependent Flux:Application to Radiotherapy Dose Calculation

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Communications in Computational Physics 2011年第10期10卷 1184-1210页

作者： christophe Berthon Martin Frank Celine Sarazin Rodolphe Turpault Universite de Nantes Laboratoire de Mathematiques Jean LerayUMR66292 rue de la HoussiniereBP 9220844322 Nantes Cedex 3France RWTH Aachen University MathematicsCenter for Computational Engineering ScienceSchinkelstrasse 252062 AachenGermany

The present work is concerned with the derivation of numerical methods to approximate the radiation dose in external beam *** address this issue,we consider a moment approximation of radiative transfer,closed by an entropy minimization *** model under consideration is governed by a system of hyperbolic equations in conservation form supplemented by source *** main difficulty coming from the numerical approximation of this system is an explicit space dependence in the flux ***,this dependence will be seen to be stiff and specific numerical strategiesmust be derived in order to obtain the needed accuracy.A first approach is developed considering the 1D case,where a judicious change of variables allows to eliminate the space dependence in the flux *** is not possible in *** therefore reinterpret the 1D scheme as a scheme on two meshes,and generalize this to 2D by alternating transformations between separate *** call this procedure projection *** numerical experiments,coming from medical physics,illustrate the potential applicability of the developed method.

关键词： Radiotherapy hyperbolic system of conservation laws source term approximations finite volume methods

Patterns of climber distribution in temperate forests of the Americas

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Journal of Plant Ecology 2016年第6期9卷 724-733页

作者： Annik Schnitzler Javier Amigo Brack Hale christophe Schnitzler Laboratoire Interdisciplinaire des Environnements Continentaux(LIEC) UMR 7360 Universitéde LorraineMetzFrance Laboratorio de Botánica Facultad de FarmaciaUniversidad de Santiago de CompostelaA CoruñaSpain Franklin University Switzerland SorengoSwitzerland Facultédes Sciences du Sport UnistraUniversitéde StrasbourgStrasbourgFrance

Aims and Methods We propose a standard protocol at the landscape to continental scale for examining to what extent the range of ecological conditions found in temperate latitudes explains the variations in climber species richness and *** protocol was tested in forests of the two *** data set included 151 climber *** selected four categorical traits and grouped these species into six clusters with regard to these *** records of American forests were first gathered into alliances,second combined with bioclimatic indices(rainfall,temperature,continentality).We obtained a total of 59 vegetational units in which we calculated values of climber species richness and proportion of *** units were ultimately gathered into five forest formations(characterized by leaf longevity).Wetlands and uplands were considered *** Findings Our results emphasize clear trends in large-scale patterns of climber distribution,independently of *** species richness(in particular woody climbers)peaks in moist and warm upland forests with oceanic climates,and where conifers are *** flooded areas,climber richness is also very high and peaks in seasonally flooded large *** ecological conditions of frost,dryness or lack of nutrients,climber species richness,abundance and trait diversity decline,resulting in the dominance of small,twining and deciduous life traits.

关键词： American forest bioclimatic indices climber life traits standart protocol species richness

A high-resolution clay mineralogical record in the northern South China Sea since the Last Glacial Maximum,and its time series provenance analysis

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Chinese Science Bulletin 2010年第35期55卷 4058-4068页

作者： LIU ZhiFei LI XiaJing COLIN christophe GE HuangMin State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China Laboratoire IDES UMR 8148 CNRS Universit~ de Paris XI Orsay 91405 France

High-resolution clay mineralogical analysis of Core MD05-2904 in the northern South China Sea(SCS) covering the period since the Last Glacial Maximum shows that illite(29%-48%),smectite(14%-45%),chlorite(17%-28%),and minor kaolinite(6%-14%) comprise the clay mineral assemblage,and that time series variation does not present glacial-interglacial *** analysis indicates three end-member sources:almost all smectite derives from Luzon,all kaolinite is sourced from the Pearl River,and illite and chlorite originate from both the Pearl River and *** comparing clay mineral compositions in surface sediments from the three major source areas and of the SCS,we reconstructed a time series of clay mineral contribution from the major provenances to the northern slope of the SCS using the linear separation method for illite *** were three stages of provenance change.(1) During 24.1-17.5 ka BP,contributions from Taiwan and Luzon were similar(30%-40%),while that from the Pearl River was only 25%.(2) During 17.5-14.0 ka BP,the contribution from Luzon decreased rapidly to 20%-25%,while that from Taiwan increased to 35% from an average of 25% at 18 ka BP,and that from the Pearl River increased largely to 40%.(3) During the Holocene,differences in contributions from the three major provenances increased:the contribution from Luzon increased slightly and then remained at 27%-35%,that from Taiwan increased rapidly and then remained at 55%-60%,and that from the Pearl River decreased to 15%.The change in clay mineral contributions from different provenances is influenced mainly by clay mineral production,monsoon rainfall denudation,oceanic current transport,and sea-level change.

关键词：粘土矿物南海北部时间序列高分辨率中国海末次盛冰期 Sea 珠江源

Representation of A15 composition and T_C in internal-Sn Nb_3Sn superconducting strands

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Science China(Technological Sciences) 2010年第11期53卷 3020-3026页

作者： Andre SULPICE Jean-Louis SOUBEYROUX christophe VERWAERDE Gia Ky HOANG NEEL/CNRS-UJF ALSTOM 3 bis avenue des 3 Chenes 90018 Belfort France

Four sets of mono-element (ME) and two kinds of multifilament (MF) internal-Sn Nb3Sn superconducting strands were designed and fabricated through RRP method in which different compoment ratios, various composite configurations and some third element alloying were arranged. All the strand samples underwent a 210°C/50 h + 340°C/25 h thermal duration for Cu-Sn alloying. After that A15 phase formation heat treatment (HT) was applied for which the ME samples were chosen at three reaction temperatures of 675°C, 700°C and 725°C for 100 h and 200 h while the MF samples at four temperatures of 650°C, 675°C, 700°C and 725°C for 128 h and 200 h. The heat-treated samples were examined for A15 phase composition distribution by X-ray EDS. SQUID magnetization measurement was used to determine critical temperature TC. The obtained results demonstrate that for fully-reacted internal-Sn Nb3Sn superconductors the A15 phase composition and the intrinsic property TC are determined by the diffusion and solid state reaction mechanism and are independent of the factors including HT temperature, strand composite component and configuration arrangement, and the third element addition within the experimental range.

关键词： internal-Sn Nb3Sn strands A15 phase composition phase formation heat treatment composite configuration and design third element alloying