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Journal of High Energy Physics, Gravitation and Cosmology 2024年第4期10卷 1866-1877页

作者： Igor Yu. Potemine Werner Krause Institut de Mathmatiques Universit Paul Sabatier Toulouse France Independent Researcher Berlin Germany

We consider the Hyperverse as a collection of multiverses in a (4 + 1)-dimensional spacetime with gravitational constant G. Multiverses in our model are bouquets of thin shells (with synchronized intrinsic times). If gis the gravitational constant of a shell Sand εits thickness, then G~εg. The physical universe is supposed to be one of those thin shells inside the local bouquet called Local Multiverse. Other remarkable objects of the Hyperverse are supposed to be black holes, black lenses, black rings and (generalized) Black Saturns. In addition, Schwarzschild-de Sitter multiversal nurseries can be hidden inside those Black Saturns, leading to their Bousso-Hawking nucleation. It also suggests that black holes in our physical universe might harbor embedded (2 + 1)-dimensional multiverses. This is compatible with outstanding ideas and results of Bekenstein, Hawking-Vaz and Corda about “black holes as atoms” and the condensation of matter on “apparent horizons”. It allows us to formulate conjecture 12.1 about the origin of the Local Multiverse. As an alternative model, we examine spacetime warping of our universe by external universes. It gives data for the accelerated expansion and the cosmological constant Λ, which are in agreement with observation, thus opening a possibility for verification of the multiverse model.

关键词： 5-Dimensional Gravity Black Hole Black Saturn Cosmological Constant Dark Energy Multiverse Spacetime Warping Thin Shell

Towards a verified compiler prototype for the synchronous language SIGNAL

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Frontiers of Computer Science 2016年第1期10卷 37-53页

作者： Zhibin YANG Jean-paul BOdeVEIX Mamoun FILALI Kai HU Yongwang ZHAO Dianfu MA College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China IRIT-CNRS Universite de Toulouse Toulouse 31062 France State Key Laboratory of Software development Environment Beihang University Beijing 100191 China

SIGNAL belongs to the synchronous languages family which are widely used in the design of safety-critical real-time systems such as avionics, space systems, and nu- clear power plants. This paper reports a compiler prototype for SIGNAL. Compared with the existing SIGNAL com- piler, we propose a new intermediate representation （named S-CGA, a variant of clocked guarded actions）, to integrate more synchronous programs into our compiler prototype in the future. The front-end of the compiler, i.e., the transla- tion from SIGNAL to S-CGA, is presented. As well, the proof of semantics preservation is mechanized in the theo- rem prover Coq. Moreover, we present the back-end of the compiler, including sequential code generation and multi- threaded code generation with time-predictable properties. With the rising importance of multi-core processors in safety- critical embedded systems or cyber-physical systems （CPS）, there is a growing need for model-driven generation of multi- threaded code and thus mapping on multi-core. We propose a time-predictable multi-core architecture model in archi- tecture analysis and design language （AADL）, and map the multi-threaded code to this model.

关键词： synchronous languages SIGNAL guarded ac-tions verified compiler Coq architecture analysis and designlanguage (AADL)

From α,β-Epoxyaldehydes to Peptidonucleosides and Iminosugars

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复旦学报(自然科学版) 2005年第5期44卷 648-649页

作者： M.Baltas Y.Génisson M.Collet T.Ayad V.Faugeroux Synthèse et Physicochimie de Molécules d'Intérêt Biologique UMR CNRS 5068 UniversitéPaul Sabatier118 route de NarbonneF-31062 Toulouse cedex 04France

1 Introduction The primary objectives of the group“Natural products and bioactive molecules”,are the development of synthetic methods,their application in the elaboration of natural compounds and analogues and the translation of this know-how through an integrated approach to the identification of attractive leads in order to confront some of the major diseases in the developed and developing countries.

关键词： epoxyaldehydes regioselectivity lactones aminoalcohols fluoronucleosides

Unusual selective reactivity of the rare-earth metal complexes bearing a ligand with multiple functionalities

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Science China Chemistry 2023年第1期66卷 117-126页

作者： Dongjing Hong Thayalan Rajeshkumar Shan Zhu Zeming Huang Shuangliu Zhou Xiancui Zhu Laurent Maron Shaowu Wang Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Laboratory of Molecule-Based MaterialsCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241000China Anhui Laboratory of Clean Catalytic Engineering Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistiry and ApplicationCollege of Chemical and Environmental EngineeringAnhui Polytechnic UniversityWuhu 241000China LPCNO CNRS&INSAUniversite Paul Sabatier 135 Avenue de Rangueil31077 ToulouseFrance

Ligands play a key role in controlling activity of organometallic complexes so that development of new ligands to overcome the challenge is the main topic of modern *** first example of 1,1-hydride migratory insertion and intramolecular redox reaction has been realized in this work by applying a new ligand in rare-earth metal *** novel rare-earth metal complexes L^(Mes)RECH2TMS(THF)(RE=Y(1a),Dy(1b),Er(1c),Yb(1d),L^(Mes)=1-(3-(2,6-iPr_(2)C_(6)H_(3)N=CH)C8H4N)-CH_(2)CH_(2)-3-(2-CH2–4,6-Me_(2)C_(6)H_(2))-(N(CH)_(2)NC),THF=tetrahydrofuran)bearing a ligand with imino,indolyl,NHC(N-heterocyclic carbene)multiple functionalities were synthesized and *** of complexes 1 with silanes(PhSiH3or PhSiH2Me or PhSiD3)selectively produced the unprecedented 1,1-hydride(or deuterated H)migratory insertion of the indolyl moiety of the novel unsymmetrical dinuclear rare-earth metal complexes *** complex 2a reacts with Ph_(2)C=O to give the selective C=O double bond insertion to the RE–Co-methylene-Mesbond product 3a which further reacts with another Ph_(2)C=O(or DMAP,4-N,N-dimethylaminopyridine)affording the novelμ-η^(2):η^(3)-dianionic 3-iminoindolyl dinuclear rare-earth metal complex *** latter is formed through an unusual intramolecular redox reaction(through electron migration from the 2-carbanion of the indolyl ring to the imino motif)resulting in the re-aromatization of the indolyl ring.

关键词： rare-earth metal complexes indole N-heterocyclic carbene Fischer-type carbene 1 1-migratory insertion dianionic 3-iminoindolyl

Cross-sectional associations between cortical thiclmess and physical activity in older adults with spontaneous memory complaints:The MAPT Study

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Journal of Sport and Health Science 2023年第3期12卷 324-332页

作者： Jérémy Raffin Yves Rolland Clara Fischer Jean-Francois Mangin Audrey Gabelle Bruno Vellas Philipe de Souto Barreto the MAPT/DSA Group Gérontopôle de toulouse Institut du VieillissementCentre Hospitalo-Universitaire de ToulouseToulouse 31000France Universitépaul-sabatier/Institut National de la Santéet de la Recherche Médicale UnitéMixte de Recherche 1027 Facultéde médecineUniversity of Toulouse ⅢToulouse 31000France Centre pour l'Acquisition et le Traitement des Images Multicenter Neuroimaging Platform NeurospinUniversitéParis-SaclayGif sur Yvette 91191France Memory Resources and Research Center Montpellier University HospitalMontpellier 34295France Institut National de la Santéet de la Recherche Médicale Unité1061 i-site Montpellier Universitéd'Excellence University of MontpellierMontpellier 34090France 不详

Background:Age-related changes in brain structure may constitute the starting point for cerebral function *** activity(PA)demonstrated favorable associations with total brain volume,but its relationship with cortical thickness(CT)remains *** investigated the cross-sectional associations between PA level and CT in community-dwelling people aged 70 years and ***:A total of 403 older adults aged 74.8±4.0 years(mean±SD)who underwent a baseline magnetic resonance imaging examination and who had data on PA and confounders were *** was assessed with a *** were categorized according to PA *** linear regressions were used to compare the brain CT(mm)of the inactive group(no PA at all)with 6 active groups(growing PA levels)in 34 regions of ***:Compared with inactive persons,people who achieved PA at a level of 1500-1999 metabolic equivalent task-min/week(i.e.,about6-7 h of brisk walking for exercise) and those who achieved it at 2000-2999 metabolic equivalent task-min/week(i.e.,8-11 h of brisk walking for exercise)had higher CT in the fusiform gyrus and the temporal ***,dose-response associations between PA and CT were found in the fusiform gyrus(B=0.011,SE=0.004,adj.p=0.035),the temporal pole(B=0.026,SE=0.009,adj.p=0.048),and the caudal middle frontal gyrus,the entorhinal,medial orbitofrontal,lateral occipital,and insular ***:This study demonstrates a positive association between PA level and CT in temporal areas such as the fusiform gyrus,a brain region often associated to Alzheimer’s disease in people aged 70 years and *** investigations focusing on PA type may help to fulfil remaining knowledge gaps in this field.

关键词： Alzheimer's disease Brain aging Cortical thickness Physical activity

A Comparative Study of Milestones for Featuring GUI Prototyping Tools

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Journal of Software Engineering and Applications 2017年第6期10卷 564-589页

作者： Thiago Rocha Silva Jean-Luc Hak Marco Winckler Olivier Nicolas ICS-IRIT Université Paul Sabatier Toulouse France SOFTEAM/CAdeXAN Toulouse France

Prototyping is one of the core activities of User-Centered design (UCD) processes and an integral component of Human-Computer Interaction (HCI) research. For many years, prototyping was synonym of paper-based mockups and only more recently we can say that dedicated tools for supporting prototyping activities really reach the market. In this paper, we propose to analyze the evolution of prototyping tools for supporting the development process of interactive systems. For that, this paper presents a review of the literature. We analyze the tools proposed by academic community as a proof of concepts and/or support to research activities. Moreover, we also analyze prototyping tools that are available in the market. We report our observation in terms of features that appear over time and constitute milestones for understating the evolution of concerns related to the development and use of prototyping tools. This survey covers publications published since 1988 in some of the main HCI conferences and 118 commercial tools available on the web. The results enable a brief comparison of characteristics present in both academic and commercial tools, how they have evolved, and what are the gaps that can provide insights for future research and development.

关键词： Prototyping Tools Survey Milestones Graphical User Interface (GUI)

Broadband Vibrational Cooling of Cold Cesium Molecules： Theory and Experiments

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Chinese Journal of Chemical Physics 2009年第2期22卷 149-156页

作者： D. Sofikitis A. Fioretti S. Weber M. Viteau A. Chotia R. Horchani M. Allegrini B. Chatel D. Comparat P. Pillet Laboratoire Aimé Cotton CNRS Université Paris-Sud Bat. 505 91405 Orsay France Laboratoire Collisions Agrégats Réactivité (UMR 5589 CNRS-Université Paul Sabatier Toulouse 3) IRSAMC Toulouse France CNISM Dipartimento di Fisica Universita di Pisa Largo Pontecorvo 356127 PISA Italy

The use of a broadband, frequency shaped femtosecond laser on translationally cold cesium molecules has recently demonstrated to be a very efficient method of cooling also the vibrational degree of freedom. A sample of cold molecules, initially distributed over several vibrational levels, has thus been transfered into a single selected vibrational level of the singlet X^1∑g ground electronic state. Our method is based on repeated optical pumping by laser light with a spectrum broad enough to excite all populated vibrational levels but limited in its frequency bandwidth with a spatial light modulator. In such a way we are able to eliminate transitions from the selected level, in which molecules accumulate. In this paper we briefly report the main experimental results and then address, in a detailed way by computer simulations, the perspectives for a ＂complete＂ cooling of the molecules, including also the rotational degree of freedom. Since the pumping process strongly depends on the relative shape of the ground and excited potential curves, ro-vibrational cooling through different excited states is theoretically compared.

关键词： Cold molecule Optical pumping Pulse .shaping Ultrashort pulse Laser cooling

Construction of axially chiral compounds via catalytic asymmetric radical reaction

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Green Synthesis and Catalysis 2022年第3期3卷 212-218页

作者： Dong Liang Wenjing Xiao Sami Lakhdar Jiarong Chen CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticides&Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079China CNRS/universite paul sabatier Laboratoire Heterochimie Fondamentale et AppliqueeToulouse 31062France

The chemistry of axially chiral compounds has emerged as a subject of increasing interest due to their widespread presence in natural products,bioactive molecules,advanced materials,and chiral ligands/*** the other hand,catalytic asymmetric radical-based transformations provide a complementary platform for the construction of enantiomerically enriched molecules that are in growing demand in the chemical and pharmaceutical *** recent years,considerable research efforts have been devoted to the development of catalytic asymmetric radical reactions for the construction of axially chiral compounds based on the unique reactivity modes of diverse *** this review,we critically illustrate these recent achievements according to different radical precursors and catalytic activation *** possible,special emphasis is also placed on the discussion of mechanistic features underlying these works and substrate *** review should be of great interest to the experts in this area,but also serve as a helpful starting point for new researchers in this field.

关键词： Axially chiral compounds Radical reactions Catalytic asymmetric synthesis Atropisomers Chiral allenes Photocatalysis

Computational Insights into Charge Storage Mechanisms of Supercapacitors

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Energy & Environmental Materials 2020年第3期3卷 235-246页

作者： Kui Xu Hui Shao Zifeng Lin Céline Merlet Guang Feng Jixin Zhu Patrice Simon Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China CIRIMAT Universite de ToulouseCNRSUniversite Toulouse 3-Paul Sabatier118 Route de NarbonneToulouse cedex 931062France Reseausurle Stockage Electrochimique de l’Energie(RS2E) Federation de Recherche CNRS 3459HUB de l’EnergieRue BaudelocqueAmiens 80039France College of Materials Science and Engineering Sichuan UniversityNo.24 South Section 1Yihuan RoadChengdu 610065China State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China Nano Interface Centre for Energy School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Computational modeling methods,including molecular dynamics(MD)and Monte Carlo(MC)simulations,and density functional theory(DFT),are receiving booming interests for exploring charge storage mechanisms of electrochemical energy storage *** methods can effectively be used to obtain molecular scale local information or provide clear explanations for novel experimental findings that cannot be directly interpreted through experimental *** short review is dedicated to emphasizing recent advances in computational simulation methods for exploring the charge storage mechanisms in typical nanoscale materials,such as nanoporous carbon materials,2 D MXene materials,and metal-organic framework *** a better understanding of charge storage mechanisms and experimental observations,fast and accurate enough models would be helpful to provide theoretical guidance and experimental basis for the design of new high-performance electrochemical energy storage devices.

关键词： 2D material charge storage mechanism molecular simulations porous electrode supercapacitor

Nanocarbon-based electrode materials applied for supercapacitors

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Rare Metals 2022年第12期41卷 3957-3975页

作者： Yu-Xiang Yang Kang-Kang Ge Sajid ur Rehman Hong Bi School of Chemistry and Chemical Engineering School of Materials Science and EngineeringAnhui UniversityHefei 230601China CIRIMAT UMR CNRS 5085UniversitéPaul Sabatier ToulouseⅢToulouse 31062France CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China

As one of the promising energy storage and conversion systems,supercapacitors(SCs)are highly favored owing to their high power density and good service *** all the key components of supercapacitor devices,the design and investigation of electrode materials play an essential role in determining the whole electrochemical charge storage ***,nanocarbon-based materials(e.g.,graphene,carbon dots,graphene quantum dots,etc.)have been widely used as SC electrode materials because of their good physical structure and chemical properties,providing a new route to further improve the energy density and life span of ***,we review the latest progress of nanocarbon-based materials(including nanocarbon and nanocarbon-based composite materials)as electrode materials in SCs *** recent progress of carbon dots,graphene,carbon nanotubes,and other nanocarbon materials electrodes is summarized,while the capacitance and energy density of the above nanocarbon electrodes still need to be ***,the preparation and performance of nanocarbonbased composite electrodes comprising transition metal oxides,conductive polymer,and metal-organic framework derived porous carbon are ***,we outline major challenges and propose some ideas on building better nanocarbon-based SC electrodes.

关键词： Supercapacitor(SC) Nanocarbon Electrode materials Carbon dots Nanocarbon-based composite