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航空制造技术 2011年第6期54卷 55-57页

作者： thierry laffont GE能源集团检测控制技术

工业内窥镜自诞生之日起就展示了其众多先进之处。由于全数字数据流和改进的光学照明技术,成像质量得到显著改善。机载处理过程的集成大大扩展了RVI的功能,通过网络连通性极大促进了数据共享。

关键词：相位测量功能相移测量电量测量工业内窥镜内窥检测相位测量法数据共享金属棒金属压制材料发动机 RVI

Lighting transfer across multiple views through local color transforms

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Computational Visual Media 2017年第4期3卷 315-324页

作者： Qian Zhang Pierre-Yves laffont Terence Sim Nanyang Technological University ETH Zurich National University of Singapore

We present a method for transferring lighting between photographs of a static scene. Our method takes as input a photo collection depicting a scene with varying viewpoints and lighting *** cast lighting transfer as an edit propagation problem, where the transfer of local illumination across images is guided by sparse correspondences obtained through multi-view stereo. Instead of directly propagating color, we learn local color transforms from corresponding patches in pairs of images and propagate these transforms in an edge-aware manner to regions with no correspondences. Our color transforms model the large variability of appearance changes in local regions of the scene, and are robust to missing or inaccurate correspondences. The method is fully automatic and can transfer strong shadows between images. We show applications of our image relighting method for enhancing photographs, browsing photo collections with harmonized lighting, and generating synthetic time-lapse sequences.

关键词： relighting photo collection time-lapse image editing

Strong dependency of the tribological behavior of CuZr-based bulk metallic glasses on relative humidity in ambient air

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Friction 2023年第5期11卷 785-800页

作者： Solène BARLEMONT Paul laffont Rémi DAUDIN Alexis LENAIN Guillaume COLAS Pierre-Henri CORNUAULT Femto-ST Institute Department of Applied MechanicsUniversity of Bourgogne Franche-ComtéCNRS/UFC/ENSMM/UTBMBesançon 25030France University of Grenoble Alpes CNRSSIMaPGrenoble 38000France Vulkam Inc.Amorphous metal micro casting Gières 38610France

Thanks to their outstanding mechanical properties,Bulk Metallic Glasses(BMGs)are new alternatives to traditional crystalline metals for mechanical and micromechanical applications including power ***,the tribological properties of BMGs are still poorly understood,mostly because their amorphous nature induces counter intuitive responses to friction and *** the present study,four different BMGs(Cu_(47)Zr_(46)Al_(7),Zr_(46)Cu_(45)Al_(7)Nb_(2),Zr_(60)Cu_(28)Al_(12),and Zr_(61)Cu_(25)Al_(12)Ti_(2))underwent ball-on-disc friction tests against 100Cr6 steel balls(American Iron and Steel Institute(AISI)52100)at different relative humidities(RHs)ranging from 20%to 80%.Controlling humidity enabled to observe a high repeatability of the friction and wear responses of the ***,the friction coefficient decreased by a factor of 2 when the humidity was increased,and the wear rate of BMGs was particularly low thanks to a 3rd-body tribolayer that forms on the BMG surface,composed of oxidized wear particles originating from the *** morphology of this tribolayer is highly correlated to *** study also identifies how the tribolayer is built up from the initial contact until the steady state is achieved.

关键词： Bulk Metallic Glasses(BMGs) tribology oxide transfer layer relative humidity(RH)

Cell-specific pathways recruited for symbiotic nodulation in the Medicago truncatula legume

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Molecular Plant 2022年第12期15卷 1868-1888页

作者： Sergio Alan Cervantes-Pérez Sandra Thibivilliers Carole laffont Andrew D.Farmer Florian Frugier Marc Libault Department of Agronomy and Horticulture Center for Plant Science InnovationUniversity of Nebraska-LincolnLincolnNE 68503USA Single Cell Genomics Core Facility Center for BiotechnologyUniversity of Nebraska-LincolnLincolnNE 68588USA Institute of Plant Sciences Paris-Saclay(IPS2) UniversitéParis-SaclayCNRSINRAEUniversitéParis-CitéUniversitéd’Evry91190 Gif-sur-YvetteFrance National Center for Genome Resources Santa FeNM 87505USA

Medicago truncatula is a model legume species that has been studied for decades to understand the symbiotic relationship between legumes and soil bacteria collectively named *** symbiosis called nodulation is initiated in roots with the infection of root hair cells by the bacteria,as well as the initiation of nodule primordia from root cortical,endodermal,and pericycle cells,leading to the development of a new root organ,the nodule,where bacteria fix and assimilate the atmospheric dinitrogen for the benefit of the ***,we report the isolation and use of the nuclei from mock and rhizobia-inoculated roots for the single nuclei RNA-seq(sNucRNA-seq)profiling to gain a deeper understanding of early responses to rhizobial infection in Medicago roots.A gene expression map of the Medicago root was generated,comprising 25 clusters,which were annotated as specific cell types using 119 Medicago marker genes and orthologs to Arabidopsis cell-type marker genes.A focus on root hair,cortex,endodermis,and pericycle cell types,showing the strongest differential regulation in response to a short-term(48 h)rhizobium inoculation,revealed not only known genes and functional pathways,validating the sNucRNA-seq approach,but also numerous novel genes and pathways,allowing a comprehensive analysis of early root symbiotic responses at a cell type-specific level.

关键词： Medicago root single-cell transcriptomic rhizobium nodule initiation root hair cells cortical cells

Cell-specific pathways recruited for symbiotic nodulation in the Medicago truncatula legume

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Molecular Plant 2023年第2期16卷 481-483页

作者： Sergio Alan Cervantes-Perez Sandra Thibivilliers Carole laffont Andrew D.Farmer Florian Frugier Marc Libault 不详

In the originally published version of this work,a mistake appeared in Figure 1A wherein the red circles,meant to highlight differing areas of the two side-by-side UMAPs,were misaligned in the *** corrected Figure 1,in which the red circles indicate areas of differing density within cluster#2,now appears both in the online article and *** authors apologize for the confusion.

关键词： Figure circles mistake

PSP Based DCG-FGT Transistor Model Including Characterization Procedure on Dummy Cell

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Journal of Energy and Power Engineering 2012年第11期6卷 1878-1883页

作者： Abderrezak Marzaki Virginie Bidal Romain laffont Wencelas Rahajandraibe Jean-Michel Portal Rachid Bouchakour ST-Microelectronics Z de Rousset BP 2 Rousset Cedex F-13106 France Institut Matriaux et Microlectronique Nanoscience de Provence IMT Technop6le Chfiteau Gombert Marseille F-13451 France

A new DCG-FGT （dual-control-gate floating-gate transistor） transistor model for static and transient simulations is presented. The PSP MOS （metal-oxide-semiconductor） description is used as a basis for the formulation of the conduction channel behavior. The floating gate potential is implicitly computed with an added charge neutrality relation that ensures a good convergence. The model is running under electrical simulator （ELDO） and is characterized thanks to ICCAP （integrated circuit characterization and analysis program） software. It has been validated on an advanced STMicroelectronics technology. The final objective of this work is to provide an accurate and scalable model available in design framework. This device which is derived from a flash memory cell offers many possibilities for circuit design.

关键词：晶体管模型虚拟单元 PSP 程序表征 FGT 意法半导体闪速存储器

Comparative Transcriptomic Analysis of Salt Adaptation in Roots of Contrasting Medicago truncatula Genotypes

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Molecular Plant 2012年第5期5卷 1068-1081页

作者： Ons Zahaf Sandrine Blanchet Axel de Zelicourt Benoit Alunni Julie Plet Carole laffont Laura de Lorenzo Sandrine Imbeaud Jean-Laurent lchante Anouck Diet Mounawer Badri Ana Zabalza Esther M. Gonzalez Herve Delacroix Veronique Gruber Florian Frugier Martin Crespi Institut des Sciences du Vegetal (ISV) CNRS 91198 Gif-sur-Yvette France Universite Paris Diderot Paris 7 75205 Paris Cedex 13 France Departamento de Microbiologia y Parasitologia Universidad de Sevilla 41012 Sevilla Spain Present address: Centro Nacional de Biotecnologia (CNB) CSIC 28049 Madrid Spain Centre de Genetique Moleculaire (CGM) CNRS Gif/Orsay DNA Microarray Platform (GODMAP) Universite Paris-Sud 11 91190 Gif-sur-Yvette France Present address: Genomique Fonctionnelle des tumeurs solides INSERM IUH Universit~ Paris Descartes 75010 Paris France Laboratory of Legumes Centre of Biotechnology of Borj Cedria BP 901 2050 Hammam-Lif Tunisia Departamento de Ciencias del Medio Natural Universidad P~blica de Navarra 31006 Pamplona Spain

Evolutionary diversity can be driven by the interaction of plants with different environments. Molecular bases involved in ecological adaptations to abiotic constraints can be explored using genomic tools. Legumes are major crops worldwide and soil salinity is a main stress affecting yield in these plants. We analyzed in the Medicago truncatula legume the root transcriptome of two genotypes having contrasting responses to salt stress： TN1.11, sampled in a salty Tunisian soil, and the reference Jemalong A17 genotype. TN1.11 plants show increased root growth under salt stress as well as a differential accumulation of sodium ions when compared to A17. Transcriptomic analysis revealed specific gene clusters preferentially regulated by salt in root apices of TN1.11, notably those related to the auxin pathway and to changes in histone variant isoforms. Many genes encoding transcription factors （TFs） were also differentially regulated between the two genotypes in response to salt. Among those selected for functional studies, overexpression in roots of the A17 ge- notype of the bHLH-type TF most differentially regulated between genotypes improved significantly root growth under salt stress. Despite the global complexity of the differential transcriptional responses, we propose that an increase in this bHLH TF expression may be linked to the adaptation of M. truncatula to saline soil environments.

关键词： root architecture abiotic stress legume transcriptome bHLH.