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Open Journal of Rheumatology and Autoimmune Diseases 2017年第3期7卷 158-166页

作者： Comlan Albert Dovonou Cossi Adébayo Alassani Séraphin Ahoui Lauren Gueguen Arthur Capdeville Elie Cornec-le Gall Laurent Doucet yannick le meur Borgou Regional University Teaching Hospital Parakou Benin Regional University Teaching Hospital of Brest-La Cavale Blanche Brest France

Systemic scleroderma is a rare disease in which visceral manifestations occur, particularly peripheral vascular, digestive, cardiopulmonary and renal. It is pathology with a predilection for women. The present clinical case is that of a man with the renal complications of scleroderma and the difficulties of the treatment even in the developed countries like France. In the present case, the management of this disease required a high dose of corticosteroid therapy and extra-renal purification. Early detection of complications through a minimal clinical examination supplemented with paraclinic tests has proved necessary.

关键词： Systemic Sclerosis Acute Renal Failure Brest France

Spallation Process of Thermally Grown Oxides by In-Situ CCD Monitoring Technique

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Journal of Iron and Steel Research International 2009年第6期16卷 90-94页

作者： QI Yu-hong Philippe Lours yannick le Maoult Materials Science and Engineering Department Dalian Maritime University Dalian 116026 Liaoning China Research Centre on Tools Materials and Processes Ecole des Mines 81013 Albi France

In cooling process of Fe-Cr-Al alloy oxidized at 1 300 ℃, the effect of cooling speed and exposure time on oxide spalled area fraction and successive variety of the spalled region were studied by investigating evolvement of the thermally grown oxide using in-situ CCD monitoring technique. The results showed that oxide spallation can be restrained by controlling cooling speed and the critical temperature drop of spallation initiation which is closely related to the oxide thickness or exposure time, and the spallation process of a little region may be described in more detail as two routes： from the oxide/substrate interface micro-decohesion, micro-buckles, buckle spreading, buckle crack to spallation and from the interface micro-decohesion, micro-buckles, buckle crack and spallation to the residual oxide decohesion and spallation.

关键词： in-situ CCD monitoring technique spallation thermally grown oxide Fe-Cr-AI

A self-stabilised walking gait for humanoid robots based on the essential model with internal states

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IET Cyber-Systems and Robotics 2022年第4期4卷 283-297页

作者： Qiuyue Luo Christine Chevallereau Yongsheng Ou Jianxin Pang Victor De-león-Gómez yannick Aoustin Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhenChina Research Institute of UBTech Robotics ShenzhenChina Laboratoire des Sciences du Numerique de Nantes(LS2N) CNRSCentrale NantesNantes UniversitéNantesFrance FCA at the Univerdidad Autónoma de Coahuila TorreónMéxico

Walking stability is one of the key issues for humanoid robots.A self-stabilised walking gait for a full dynamic model of humanoid robots is *** simplified models,that is,the linear inverted pendulum model and variable-length inverted pendulum model,self-stabilisation of walking gait can be obtained if virtual constraints are properly *** result is extended to the full dynamic model of humanoid robots by using an essential dynamic model,which is developed based on the zero dynamics *** the proposed method,a robust stable walking for a humanoid robot is achieved by adjusting the step timing and landing position of the swing foot automatically,following its intrinsic dynamic *** exempts the robot from the time-consuming high-level control approaches,especially when a full dynamic model is *** different walking patterns/features(i.e.,the swing foot motion,the vertical centre of mass motion,the switching manifold configuration,etc.)affect the stability of the walking gait is *** are conducted on robots Romeo and TALOS to support the results.

关键词： dynamic stability humanoid and bipedal locomotion passive walking

Optimization of the gain in Yb^(3+)-doped cubic laser crystals of 99.99% purity

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Journal of Rare Earths 2009年第4期27卷 616-618页

作者： Georges Boulon yannick Guyot Akira Yoshikawa Physical Chemistry of Luminescent Materials University Claude Berna rd/Lyon1 UMR 5620 CNRS Bt.A.Kastler Domaine Scientifique de La Doua 69622 Villeurbanne France IMRAM Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan

This was an outlook on the prediction of the infrared laser potentiality from concentration dependences of the 2F5/2 experimental decay time in Yb3＋-doped solid-state crystals mainly on cubic crystals with 99.99% pur... 详细信息

关键词： ytterbium fluoride garnet sesquioxide laser crystals concentration quenching self trapping lifetime

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热生长陶瓷薄膜在压应力作用下的脱落行为

稀有金属材料与工程 2009年第S2期38卷 1150-1153页

作者：齐育红 Philippe Lours yannick le Maoult 张宗宝大连海事大学 Research Centre on Tools Materials & ProcessesEcoledes Mines

采用表面压痕技术和CCD监测技术研究了PM2000Fe-Cr-Al高温合金热生长氧化物陶瓷薄膜在压应力作用下的脱落行为。结果表明,表面压痕法产生的压痕周围裂纹区域面积和裂纹宽度可定性表征氧化物陶瓷薄膜附着能力,裂纹区域面积越大或裂纹越... 详细信息

采用表面压痕技术和CCD监测技术研究了PM2000Fe-Cr-Al高温合金热生长氧化物陶瓷薄膜在压应力作用下的脱落行为。结果表明,表面压痕法产生的压痕周围裂纹区域面积和裂纹宽度可定性表征氧化物陶瓷薄膜附着能力,裂纹区域面积越大或裂纹越宽薄膜附着能力越差;采用CCD摄像技术可以测得氧化物陶瓷薄膜初试脱落温度及脱落区域的形貌、位置、面积等数据。为进一步理解氧化物陶瓷薄膜的脱落机制提供了更多的信息。

关键词：热生长陶瓷薄膜脱落表面压痕技术 CCD监测技术

Aligning National Interests and Global Climate Justice:The Role of Human Rights in Enhancing the Ambition of Nationally Determined Contributions to Combat Climate Change

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Fudan Journal of the Humanities and Social Sciences 2019年第2期12卷 309-327页

作者： yannick Glemarec UN Women New YorkUSA

The Paris Agreement on climate change revolves around nationally determined contributions(NDC)and acknowledges that the ambition of the global climate response will be determined by Parties’understanding of their national *** currently envisaged in NDCs are insufficient to avoid disastrous climate *** about the impact of climate action on economic development and national interests have abated the climate ambition of some *** modeling approaches have contributed to these *** scale up global climate efforts,it will be essential to convince Parties that the short-term benefits of robust national climate action outweigh its immediate *** is driving progress to address climate change and can deliver substantial development co-benefits,particularly by reducing costs of renewable energy technologies and enabling new business ***,innovation can take many years to reach deployment stage,can create unforeseen problems of its own,and does not benefit all *** justice links human rights,development and climate regimes.A climate justice perspective provides a normative,analytical and procedural framework to identify barriers to innovation diffusion,optimize development co-benefits of climate action and help build public support for the adoption of more ambitious NDC pledges.

关键词： Climate change Development co-benefits-Innovation Human rights

Symmetrization for Fractional Elliptic and Parabolic Equations and an Isoperimetric Application(Dedicated to Haim Brezis,great master of analysis,on his 70th birthday)

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Chinese Annals of Mathematics,Series B 2017年第2期38卷 661-686页

作者： yannick SIRE Juan Luis VAZQUEZ Bruno VOLZONE johns hopkins university Krieger Hall3401 N.Charles StBaltimoreM D21218USA. departamento de matemticas universidad autnoma de madrid28049 M adridSpain dipartimento di ingegneria universit degli studi di napoli"parthenope"80143 Italia.

This paper develops further the theory of symmetrization of fractional Laplacian operators contained in recent works of two of the authors. This theory leads to optimal estimates in the form of concentration comparison inequalities for both elliptic and parabolic equations. The authors extend the theory for the so-called restricted fractional Laplacian defined on a bounded domain Ω of R^N with zero Dirichlet conditions outside of Ω. As an application, an original proof of the corresponding fractional Faber-Krahn inequality is derived. A more classical variational proof of the inequality is also provided.

关键词： Symmetrization, Fractional Laplacian, Nonlocal elliptic and parabolicequations, Faber-Krahn inequality

In vivo astrocyte reprogramming following spinal cord injury

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Neural Regeneration Research 2024年第3期19卷 487-488页

作者： yannick N.Gerber Florence E.Perrin MMDN University of MontpellierEPHEINSERMMontpellierFrance Institut Universitaire de France(IUF) ParisFrance

Harmful and helpful roles of astrocytes in spinal cord injury(SCI):SCI induce gradable sensory,motor and autonomic impairments that correlate with the lesion severity and the rostro-caudal location of the injury *** absence of spontaneous axonal regeneration after injury results from neuron-intrinsic and neuron-extrinsic ***,not only adult neurons display limited capability to regrow axons but also the injury environment contains inhibitors to axonal regeneration and a lack of growth-promoting *** other cell populations that respond to the lesion,reactive astrocytes were first considered as only detrimental to spontaneous axonal ***,astrocytes.

关键词： injury impairment programming

Functional attributes： Compacting vs decompacting earth- worms and influence on soil structure

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Current Zoology 2012年第4期58卷 556-565页

作者： Arnauth MartinezGUEI yannick BAIDAI Jerome Ebagnerin TONDOH Jeroen HUISING Universit6 Abobo-Adjam6 Sciences de la Nature/Centre de Recherche en Ecologie 08 BP 109 Abidjan 08 C6te d'Ivoire CIAT-TSBF Institut d'Economie Rurale CRRA de Sotuba Laboratoire Sol-Eau-Plante c/o Icraf Sahel BPE 5118 B amako Mali CIAT-TSBF Nairobi c/o ICRAF United Nations Avenue P.O. Box 30677-00100 Nairobi Kenya

A short term field mesocosm experiment was performed in semi-deciduous forest areas of Ivory Coast to assess the impact of a decompacting （Hyperiodrilus africanus, Eudrilidae） and two compacting （Millsonia omodeoi and Dichogaster terrae nigrae, Acanthodrilidae） earthworm species on soil properties. These species have been selected for their predominance in the re- gion and their contrasting impact on soil structure. The experimental design consisted of a treatment without worms （control）, and treatments with one, two or three species of earthworms. Both compacting and decompacting earthworms increased water infil- tration rate in all treatments, with marked impact in H. africanus and M. omodeoi＋D, terraenigrae treatments. Interactions be- tween compacting and decompacting species resulted in more large aggregates in comparison to when the compacting species D. terraenigrae was alone. This may be accounted for by their compacting attribute as compacting earthworms are responsible for producing the highest number of large aggregates. The low values of mean weight diameter in treatments combining decompact-ing and compacting earthworms compared with compacting ＂M. omodeoi＂ one also confirmed the trend of decline in soil com-paction in the presence of the decompacting species. These results showed positive impact of species richness on soil structure regulation, which is crucial in ecosystem productivity and support consequently the insurance hypothesis. In fact, this study showed that the preservation of earthworm species belonging to these two contrasting functional groups is essential for the main-tenance of stable soil structure regulation in agro-tropical ecosystems.

关键词： Earthworms Physical properties Compacting and decompacting species Mesocosms

Gas decomposition and electrode degradation characteristics of a 20%C_(3)F_(7)CN and 80%CO_(2) gas mixture for high voltage accelerators

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High Voltage 2021年第5期6卷 750-759页

作者： Ibrahim Iddrissu Qinghua Han Lujia Chen Louis Maksoud yannick Kieffel Department of Electrical and Electronic Engineering The University of ManchesterManchesterUK Materials Research Department General ElectricGrid Solutions SASVilleurbanneFrance

Sulphur hexafluoride(SF_(6))is a potent greenhouse gas used in high voltage *** a promising alternative to SF_(6),the C_(3)F_(7)CN/CO_(2)gas mixture and its by‐products are of great interest to ensure the safe operation of accelerators that will adopt any SF_(6)‐free *** work experimentally examines the electrical ageing characteristics of a 20%C_(3)F_(7)CN/80%CO_(2)gas mixture tested using spark gaps under a pressure of 7.2 bar(abs.).Gas samples were collected after 1000 DC breakdowns and analysed using gas chro-matography mass spectrometry(GC‐MS)with an estimated toxicity value of 54,459 ppmv,which indicates the aged mixture to be non‐*** investigation was conducted on the gas‐solid interface after 500 breakdowns for both SF_(6) and the 20%C_(3)F_(7)CN/80%CO_(2)gas *** electrodes were analysed using X‐ray photoelec-tron spectroscopy(XPS)and X‐ray diffraction(XRD)*** surface analysis revealed the formation of metal fluorides on the electrode surface tested using the 20%C_(3)F_(7)CN/80%CO_(2)mixture,whereas metal fluorides and sulphides were detected for electrodes tested with SF_(6).The findings provide a reference on the toxicity and gas‐solid interaction of the electrically aged 20%C_(3)F_(7)CN/80%CO_(2)gas mixture for potential retro‐fill application in high voltage accelerators.

关键词： mixture electrode characteristics