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Geodynamic evolution of the Tethyan lithosphere as recorded in the Spontang Ophiolite,South Ladakh ophiolites(NW Himalaya,India)

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Geoscience Frontiers 2022年第1期13卷 326-349页

作者： Mallika K.Jonnalagadda Mathieu Benoit Shivani Harshe romain Tilhac Raymond A.Duraiswami Michel Grégoire Nitin R.Karmalkar Interdisciplinary School of Science Savitribai Phule Pune UniversityPune 411007India Department of Geology Savitribai Phule Pune UniversityPune 411007India Géosciences Environnement Toulouse CNRS-CNES-IRD-UniversitéPaul SabatierObservatoire Midi Pyrénées31400 ToulouseFrance Instituto Andaluz de Ciencias de la Tierra(IACT) CSIC–Universidad de Granada18100 ArmillaGranadaSpain Vice-Chancellor’s Office Savitribai Phule Pune UniversityPune 411007India

The Spontang Ophiolite complex represents the most complete ophiolite sequence amongst the South Ladakh ophiolites and comprises mantle rocks(depleted harzburgites,dunites and minor lherzolites)as well as crustal rocks(basalt,isotropic gabbros,layered gabbros etc.).In the present study,detailed geochemistry(whole rock as well as mineral chemistry)and Sr-Nd isotopic analyses of thirty-six ultramaficmafic samples have been attempted to constraint the evolution and petrogenetic history of the Tethyan oceanic ***,trace-element and REE patterns of the peridotites and their minerals indicate that the lherzolites experienced lower degrees of partial melting resembling abyssal peridotites(at higher temperatures,TREE=$1216℃)than the harzburgites(6%–8%versus 15%–17%).Elevated eNd(t)and variable^(87) Sr/^(86) Sr(t)ratios along with REE patterns suggest that the Spontang mafic rocks display N-MORB affinity with negligible participation of oceanic sediments in their genesis are originated from a depleted upper mantle with little contribution from subduction-related ***-type Neotethyan oceanic crust is associated with the earliest phase of subduction(of older Jurassic age)through which a younger intra-oceanic island arc(Spong arc)subsequently *** REE display typical U-shaped patterns,suggesting that these rocks have been metasomatized by LREE-enriched *** the other side,mafic rocks are characterized by heterogeneous(Nb/La)PMand(Hf/Sm)PMand relatively homogeneous eNd(t),indicating interaction of subduction-related melts with the upper mantle during the initiation of subduction,in Early Cretaceous times.

关键词： Peridotites Mafic rocks Partial melting Metasomatism Ladakh

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Endogenous retinal neural stem cell reprogramming for neuronal regeneration

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Neural Regeneration Research 2017年第11期12卷 1765-1767页

作者： romain Madelaine Philippe Mourrain Stanford Center for Sleep Sciences and Medicine Department of Psychiatry and Behavioral SciencesStanford University INSERM 1024 Ecole Normale SupérieureParisFrance

In humans, optic nerve injuries and associated neurodegenerative diseases are often followed by perma- nent vision loss. Consequently, an important challenge is to develop safe and effective methods to replace retinal neurons and thereby restore neuronal functions and vision. Identifying cellular and molecular mechanisms allowing to replace damaged neurons is a major goal for basic and translational research in regenerative medicine. Contrary to mammals, the zebrafish has the capacity to fully regenerate entire parts of the nervous system, including retina. This regenerative process depends on endogenous retinal neural stem cells, the Miiller glial cells. Following injury, zebrafish Miiller cells go back into cell cycle to proliferate and generate new neurons, while mammalian Mtiller cells undergo reactive gliosis. Recently, transcription factors and microRNAs have been identified to control the formation of new neurons derived from ze- brafish and mammalian Mtiller cells, indicating that cellular reprogramming can be an efficient strategy to regenerate human retinal neurons. Here we discuss recent insights into the use of endogenous neural stem cell reprogramming for neuronal regeneration, differences between zebrafish and mammalian Mtiller cells, and the need to pursue the identification and characterization of new molecular factors with an instructive and potent function in order to develop theurapeutic strategies for eye diseases.

关键词： neuronal regeneration retina Muller glial cells neural stem cell reprogramming achaete-scute homolog 1 microRNA-9 Tlx Onecut

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Simple experimental procedures to distinguish photothermal from hot-carrier processes in plasmonics

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Light(Science & Applications) 2020年第1期9卷 974-989页

作者： Guillaume Baffou Ivan Bordacchini Andrea Baldi romain Quidant Institut Fresnel CNRSAix Marseille UniversityCentrale MarseilleMarseilleFrance ICFO-Institut de Ciencies Fotoniques The Barcelona Institute of Science and Technology08860CastelldefelsBarcelonaSpain DIFFER-Dutch Institute for Fundamental Energy Research De Zaale 205612 AJ EindhovenThe Netherlands Vrije Universiteit Amsterdam De Boelelaan 10811081 HV AmsterdamThe Netherlands ICREA-Institucio Catalana de Recerca i Estudis Avancats 08010 BarcelonaSpain Nanophotonic Systems Laboratory Department of Mechanical and Process EngineeringETH Zurich8092ZurichSwitzerland

Light absorption and scattering of plasmonic metal nanoparticles can lead to non-equilibrium charge carriers,intense electromagnetic near-fields,and heat generation,with promising applications in a vast range of fields,from chemical and physical sensing to nanomedicine and photocatalysis for the sustainable production of fuels and *** the relative contribution of thermal and non-thermal contributions in plasmon-driven processes is,however,*** temperature measurements are technically challenging,and macroscale experiments are often characterized by collective heating effects,which tend to make the actual temperature increase *** work is intended to help the reader experimentally detect and quantify photothermal effects in plasmon-driven chemical reactions,to discriminate their contribution from that due to photochemical processes and to cast a critical eye on the current *** this aim,we review,and in some cases propose,seven simple experimental procedures that do not require the use of complex or expensive thermal microscopy *** proposed procedures are adaptable to a wide range of experiments and fields of research where photothermal effects need to be assessed,such as plasmonic-assisted chemistry,heterogeneous catalysis,photovoltaics,biosensing,and enhanced molecular spectroscopy.

关键词： collective photochemical intense

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Deep learning methods for biotic and abiotic stresses detection and classification in fruits and vegetables:State of the art and perspectives

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Artificial Intelligence in Agriculture 2023年第3期9卷 46-60页

作者： Sèton Calmette Ariane Houetohossou Vinasetan Ratheil Houndji Castro Gbêmêmali Hounmenou Rachidatou Sikirou romain Lucas Glele Kakaï Laboratoire de Biomathématiques et d'Estimations Forestières Faculty of Agronomic SciencesUniversity of Abomey-Calavi04 BP 1525CotonouBenin Institut de Formation et de Recherche en Informatique University of Abomey-Calavi01 BP 526CotonouBenin Laboratoire de Défense des Cultures Centre de Recherches Agricoles d'AgonkanmeyInstitut National des Recherches Agricoles du Bénin(INRAB)01 BP 884CotonouBenin

Deep Learning(DL),a type of Machine Learning,has gained significant interest in many fields,including *** paper aims to shed light on deep learning techniques used in agriculture for abiotic and biotic stress detection in fruits and vegetables,their benefits,and the challenges faced by *** papers were collected from Web of Science,Scopus,Google Scholar,Springer,and Directory of Open Access Journals(DOAJ)using combinations of specific keywords such as:’Deep Learning’OR’Artificial Intelligence’in combination with fruit disease’,vegetable disease’,‘fruit stress',OR‘vegetable stress'following PRISMA *** the initial 818 papers identified using the keywords,132 were reviewed after excluding books,reviews,and the *** recovered scientific papers were from 2003 to 2022;93%addressed biotic stress on fruits and *** most common biotic stresses on species are fungal diseases(grey spots,brown spots,black spots,downy mildew,powdery mildew,and anthracnose).Few studies were interested in abiotic stresses(nutrient deficiency,water stress,light intensity,and heavy metal contamination).Deep Learning and Convolutional Neural Networks were the most used keywords,with GoogleNet(18.28%),ResNet50(16.67%),and VGG16(16.67%)as the most used ***-two percent of the data used to compile these models come from the fields,followed by data obtained *** problems due to unbalanced classes and the small size of some databases were also *** provided the research gaps and some perspectives from the reviewed *** research works are required for a deep understanding of the use of machine learning techniques in fruit and vegetable studies:collection of large datasets according to different scenarios on fruit and vegetable diseases,evaluation of the effect of climatic variability on the fruit and vegetable yield using AI methods and more abiotic stress studies.

关键词： Deep learning Prediction Fruits Vegetables Stress Agricultural yield

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Volumetric Vector-Based Representation for Indirect Illumination Caching

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Journal of Computer Science & Technology 2010年第5期25卷 925-932页

作者： romain Pacanowski Xavier Granier Christophe Schlick Pierre Poulin CEA-CESTA BP2 Le Barp33114France ACM INRIA Bordeaux Sud-Ouest/LaBRI-Bordeaux University Talence33405France State Key Lab of CAD&CG Zhejiang University LIGUM Dept.I.R.O.Universite de MontrealMontreal QCH3C 3J7Canada

This paper introduces a caching technique based on a volumetric representation that captures low-frequency indirect *** structure is intended for efficient storage and manipulation of *** is based on a 3D grid that stores a fixed set of irradiance *** preprocessing,this representation can be built using almost any existing global illumination *** rendering,the indirect illumination within a voxel is interpolated from its associated irradiance vectors,and is used as additional local light *** with other techniques,the 3D vector-based representation of our technique offers increased robustness against local geometric variations of a *** thus demonstrate that it may be employed as an efficient and high-quality caching data structure for bidirectional rendering techniques such as particle tracing or photon mapping.

关键词： caching for global illumination photon mapping particle tracing

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Photonics of time-varying media

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Advanced Photonics 2022年第1期4卷 30-61页

作者： Emanuele Galiffi romain Tirole Shixiong Yin Huanan Li Stefano Vezzoli Paloma A.Huidobro Mário G.Silveirinha Riccardo Sapienza Andrea Alù J.B.Pendry City University of New York Photonics InitiativeAdvanced Science Research CenterNew YorkUnited States Imperial College London Blackett LaboratoryDepartment of PhysicsLondonUnited Kingdom Nankai University School of PhysicsTianjinChina Instituto de Telecomunicações Instituto Superior Técnico-University of LisbonLisboaPortugal City University of New York Physics ProgramGraduate CenterNew YorkUnited States

Time-varying media have recently emerged as a new paradigm for wave manipulation,due to the synergy between the discovery of highly nonlinear materials,such as epsilon-near-zero materials,and the quest for wave applications,such as magnet-free nonreciprocity,multimode light shaping,and ultrafast *** this review,we provide a comprehensive discussion of the recent progress achieved with photonic metamaterials whose properties stem from their modulation in *** review the basic concepts underpinning temporal switching and its relation with spatial scattering and deploy the resulting insight to review photonic time-crystals and their emergent research avenues,such as topological and non-Hermitian *** then extend our discussion to account for spatiotemporal modulation and its applications to nonreciprocity,synthetic motion,giant anisotropy,amplification,and many other ***,we conclude with a review of the most attractive experimental avenues recently demonstrated and provide a few perspectives on emerging trends for future implementations of time-modulation in photonics.

关键词： time-varying media temporal modulation metamaterials switching optics photonics light

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Subacute osteomyelitis due to Staphylococcus caprae in a teenager:A case report and review of the literature

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World Journal of Clinical Cases 2023年第20期11卷 4897-4902页

作者： Oscar Vazquez Giacomo De Marco Nathaly Gavira Celine Habre Marcia Bartucz Christina N Steiger romain Dayer Dimitri Ceroni Paediatric Orthopaedics Unit Geneva Children’s HospitalGeneva University HospitalsGeneva 1211Switzerland Paediatric Radiology Unit Geneva Children’s HospitalGeneva University HospitalsGeneva 1211Switzerland

BACKGROUND Staphylococcus caprae(***)is a human commensal bacterium which can be detected in the nose,nails,and *** can be responsible for heterogeneous infections such as bacteremia,endocarditis,pneumonia,acute otitis externa,peritonitis,and urinary tract *** and joint infections due to *** have also been reported,but most of them resulted from the infection of orthopedic devices,especially joint prostheses and internal osteosynthesis *** cases of primary osteoarticular infections caused by *** have been described,including osteitis,arthritis,or *** SUMMARY We report an unusual case of subacute osteomyelitis in a toe phalanx caused by *** in a 14.5-year-old *** Subacute *** osteomyelitis is a little-known and probably underestimated community-acquired infectious *** microorganism’s pathogenicity should be seen as more than a classic nosocomial orthopedic device infection.

关键词： Subacute Osteomyelitis Staphylococcus caprae Teenagers Case report

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基于多光混频的方法产生平坦毫米波噪声

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中国激光 2022年第7期49卷 163-170页

作者：陈永祥刘文杰孙粤辉 romain Zinsou 王云才广东工业大学信息工程学院广东省信息光子技术重点实验室广东广州510006

提出了一种基于多光混频产生平坦毫米波噪声的方法。通过宽带放大自发辐射(ASE)光源,滤出多个具有不同中心波长的高斯型噪声光谱,利用宽带光电探测器,对多个具有不同中心波长的噪声光谱进行了混频以产生平坦毫米波噪声。仿真结果表明,... 详细信息

提出了一种基于多光混频产生平坦毫米波噪声的方法。通过宽带放大自发辐射(ASE)光源,滤出多个具有不同中心波长的高斯型噪声光谱,利用宽带光电探测器,对多个具有不同中心波长的噪声光谱进行了混频以产生平坦毫米波噪声。仿真结果表明,所提方案能够在大频率范围内产生平坦的毫米波噪声,如F波段(90~140 GHz)和G波段(140~220 GHz)。为了定量地比较毫米波噪声的质量,定义了相对平坦度为某个频率范围内产生噪声功率的起伏与其平均功率之比。实验结果表明,产生的毫米波噪声的相对平坦度低至0.46[@(35±15)GHz]。

关键词：光学仪器平坦度毫米波噪声多光混频光电转换

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Impacts of a Japan–South Korea power system interconnection on the competitiveness of electric power companies according to power exchange prices

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Global Energy Interconnection 2020年第3期3卷 292-302页

作者： romain Zissler Jeffrey S.Cross School of Environment and Society Tokyo Institute of Technology2-12-1 OokayamaMeguro-kuTokyo 152-8550Japan

In many regions,international power system interconnections provide economic,energy-security,environmental,and technical *** contrast,such interconnections remain scarce in Northeast *** 2016,after approving a joint memorandum of understanding between major electric power companies from China,Japan,South Korea,and Russia,related initiatives regained momentum in the ***,the corresponding developments in Japan remain limited,mainly owing to the lack of involvement of Japanese electric power *** study represents a pioneering attempt to provide an economic assessment based on power exchange prices of a power system interconnection between Japan and South Korea regarding the competitiveness of electric power companies in terms of competitive business segments and strategic *** found that although the position of Japanese generators may slightly deteriorate,that of the supply segment would substantially improve,thus suggesting that more opportunities than threats are derived from the *** promising outcome may foster the adoption of an interconnection with South Korea considering the positive economic and business perspectives in ***,realizing the interconnection may improve the energy security and air quality in the region.

关键词： Electricity grid interconnection Japan South Korea Electric power company Power exchange price

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Compression-induced stiffness in the buckling of a one fiber composite

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Theoretical & Applied Mechanics Letters 2013年第6期3卷 6-10页

作者： romain Lagrange Massachusetts Institute of Technology Department of Applied Mathematics

We study the buckling of a one fiber composite whose matrix stiffness is slightly dependent on the compressive force. We show that the equilibrium curves of the system exhibit a limit load when the induced stiffness parameter gets bigger than a threshold. This limit load increases when the stiffness parameter is increasing and it is related to a possible localized path in the post-buckling domain. Such a change in the maximum load may be very desirable from a structural stand point.

关键词： buckling fiber composite initial curvature compression-induced stiffness limit point

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