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Hydrogeochemical and multi-tracer investigations of arsenic-affected aquifers in semi-arid West Africa

Geoscience Frontiers 2019年第5期10卷 1685-1699页

作者： Anja Bretzler Lucien Stolze julien Nikiema Franck Lalanne Elaheh Ghadiri Matthias S. Brennwald Massimo Rolle Mario Schirmer Eawag Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland Centre d’Hydrogéologie et de Géothermie (CHYN) Université de NeuchatelSwitzerland Technical University of Denmark (DTU) LyngbyDenmark Université Ouaga I Pr. Joseph KI-ZERBO OuagadougouBurkina Faso Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE) OuagadougouBurkina Faso ETH Zürich Department of Environmental System SciencesZürichSwitzerland

The semi-arid Sahel regions ofWest Africa rely heavily on groundwater from shallow to moderately deep (10 μg/L) stemming from the oxidation of sulphide minerals (pyrite,arsenopyrite) in mineralised *** aquifers are still little investigated,especially concerning groundwater residence times and the influence of the annual monsoon season on groundwater *** gain insights on the temporal aspects of As contamination,we have used isotope tracers (noble gases,3H,stable water isotopes (2H,18O)) and performed hydrochemical analyses on groundwater abstracted from tube wells and dug wells in a small study area in southwestern Burkina *** revealed a great variability in groundwater properties (*** conditions,As concentrations,water level,residence time) over spatial scales of only a few hundred metres,characteristic of the highly heterogeneous fractured *** As levels are found in oxic groundwater of circum-neutral pH and show little relation with any of the measured *** concentrations are relatively stable over the course of the year,with little effect seen by the *** residence time does not seem to have an influence on As concentrations,as elevated As can be found both in groundwater with short (10^3 a) residence times as indicated by 3He/4He ratios spanning three orders of *** results support the hypothesis that the proximity to mineralised zones is the most crucial factor controlling As concentrations in the observed redox/pH *** existence of very old water portions with residence times >10^3 years already at depths of <50 m *** a new finding for the shallow fractured bedrock aquifers of Burkina Faso,suggesting that overexploitation of these relatively low-yielding aquifers may be an issue in the

关键词： Arsenic Groundwater chemistry West Africa Fractured aquifers Residence time Noble gases

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Isolation and Characterization of Cellulose Nanofibers from Argentine Tacuara Cane(Guadua Angustifolia Kunth)

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Journal of Renewable Materials 2019年第4期7卷 373-381页

作者： C.A.Rodríguez Ramírez Fleur Rol julien Bras Alain Dufresne Nancy Lis Garcia Norma D'Accorso Universidad de Buenos Aires Facultad de Ciencias Exactas y NaturalesDepartamento de Química OrgánicaBuenos Aires Argentina CONICET-Universidad de Buenos Aires.Centro de Investigación en Hidratos de Carbono(CIHIDECAR).Buenos Aires Argentina Univ.Grenoble Alpes CNRSGrenoble INPLGP2F-38000France

New trends in the area of material improvement are the use of natural nano-charges from renewable biomass,improving the value and sustainability of our country’s natural *** is widely used in many countries of the world,although in Argentina,despite being commercialized and exported for the manufacture of wood floors,it goes unnoticed despite having native ***,researchers identified the native and exotic species present in our country and are working on novel *** this context,it is proposed the Argentine Tacuara Cane(Guadua Angustifolia Kunth),endemic plant as a new source of nanocellulosic materials,where stem fibers have been isolated using a green method achieving with yield of 45.9%of *** cellulose nanofibrils(CNF)were obtained using a green homogenization *** CNF exhibited web-like long fibrous structure with the diameter of 10-20 *** crystallinity was 65.5%,as for the onset temperature of thermal decomposition was 212°*** nanocellulose isolated from the Tacuara Cane seed fibers has a high potential to be used as a new source of cellulose-based nanofiller for the reinforcement of bionanocomposite films.

关键词： Cellulose nanofibers green valorization

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Simon Pierre Adovelande: A Man of Conviction for Benin and China

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China Today 2018年第5期67卷 42-43页

作者： julien BUFFET

Benin is a strategically significant cotton producing nation in West Africa that is actively fighting against climate change despite suffering from *** China’s partnership,it has begun to take its cdestiny into its own *** the embassy district in Beijing,on Guanghua Avenue,it is pleasant to take a walk among the imposing buildings of diplomatic missions of the United States,the United Kingdom,Brazil,Greece,and *** is also where Simon Pierre Adove-

关键词：中国气候变化生产国

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“Polymer-in-ceramic” based poly(ε-caprolactone)/ceramic composite electrolyte for all-solid-state batteries

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Journal of Energy Chemistry 2021年第1期30卷 318-325,I0010页

作者： Bohao Zhang Yulong Liu Jia Liu Liqun Sun Lina Cong Fang Fu Alain Mauger Christian M.julien Haiming Xie Xiumei Pan National&Local United Engineering Laboratory for Power Battery Department of ChemistryNortheast Normal UniversityChangchun 130024JilinChina Institut de Minéralogie de Physique des Matériaux et de Cosmochimie(IMPMC)Sorbonne UniversitéCNRS UMR 75904 Place Jussieu75005 ParisFrance

Inspired by the concept of "polymer-in-ceramic",a composite poly(ε-caprolactone)(PCL)/ceramic containing LiTFSI is prepared and investigated as a solid electrolyte for all-solid-state *** composite with the optimum concentration of 45 wt% LiTFSI and 75 wt% Li1.5Al0.5Ge1.5(PO4)3(LAGP,NASICON-type structure) exhibits a high ionic conductivity(σi=0.17 mS cm-1) at 30℃,a transference number of 0.30,and is stable up to 5.0 *** composite electrolyte is a flexible and self-standing ***-state LiFePO4//Li batteries with this composite electrolyte demonstrate excellent cycling stability with high discharge capacity of 157 mA h g-1,high capacity retention of 96% and coulombic efficiency of 98.5% after 130 cycles at 30℃ and 0.1 C *** electrochemical properties are better than other PCL-based allsolid-lithium batteries,and validate the concept of "polymer-in-ceramic" by avoiding the drawback of lower conductivity in prior "polymer-in-ceramic" electrolyte at high concentration of the ceramic.

关键词： All-solid-state electrolyte Polymer-in-ceramic Poly(ε-caprolactone)/LAGP composite High fluorinated SEI layer

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当今囿于美国“长臂管辖”的《TRIPS协定》改革研究

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国际贸易 2022年第2期 66-73页

作者：栾信杰 julien Chaisse 中国计量大学经济与管理学院香港城市大学法学院

《与贸易有关的知识产权协定》(简称《TRIPS协定》)主要是WTO成员用以推动知识产权保护的国际多边机制,但实质上也是美国利用"长臂管辖"强化其知识产权保护和实施的政策工具。与知识产权有关的争端解决也是《TRIPS协定》改革的棘手问题... 详细信息

《与贸易有关的知识产权协定》(简称《TRIPS协定》)主要是WTO成员用以推动知识产权保护的国际多边机制,但实质上也是美国利用"长臂管辖"强化其知识产权保护和实施的政策工具。与知识产权有关的争端解决也是《TRIPS协定》改革的棘手问题。世易时移,《TRIPS协定》改革应摆脱"美国优先"所造成的进退两难的困境,把握国际社会对《TRIPS协定》"均衡性与灵活性"的改革关切,提高与知识产权有关的交叉报复机制的可操作性,遵循发展原则来实施知识产权强保护机制,从而为WTO规则体系的发展、完善及确保WTO活力提供一个可资借鉴的样板。

关键词：世界贸易组织《与贸易有关的知识产权协定》美国优先长臂管辖争端解决机制

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虚拟群体与动态视频场景的在线实时融合

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计算机辅助设计与图形学学报 2011年第1期23卷 185-191页

作者：张艺江秦学英 julien Pettre 彭群生浙江大学CAD&CG国家重点实验室杭州310027 Bunraku team The French National Institute for Research in Computer Science and ControlRennesF-35042 France 山东大学计算机科学与技术学院济南250101

将虚拟人群与实拍视频场景融合实现虚拟人群对现实场景中动态目标的合理避让,是增强现实技术有待解决的一个新问题.文中首先对实拍视频流进行分析,获取真实动态目标在三维空间中的运动信息;然后将动态目标的运动转化为每个虚拟角色的约... 详细信息

将虚拟人群与实拍视频场景融合实现虚拟人群对现实场景中动态目标的合理避让,是增强现实技术有待解决的一个新问题.文中首先对实拍视频流进行分析,获取真实动态目标在三维空间中的运动信息;然后将动态目标的运动转化为每个虚拟角色的约束条件,实时更新虚拟角色的运动决策,实现其对现实场景中动态目标的避让以及虚拟角色之间的避让.为了清晰地展示现实世界中多个目标的空间位置关系,还对视频画面中的目标体做了精确的实时分割,以产生正确的遮挡关系和目标定位.最后通过实验结果表明了该算法的有效性.

关键词：虚拟人模拟混合现实图像处理多目标跟踪

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Influence of Anisotropic Permeability and Soret Effect on the Convective Heat and Mass Transfer through a Porous Cavity Saturated by a Non-Newtonian Fluid

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Engineering（科研） 2023年第12期15卷 843-866页

作者： Dieudonné Kouke julien Yovogan Laboratoire d’Energétique et de Mécanique Appliquées LEMA-EPAC Université d’Abomey Calavi Cotonou Bénin Université Nationale des Sciences Technologies Ingénierie et Mathématiques Abomey Bénin

In this work, an analytical study is carried out on double-diffusive natural convection through a horizontal anisotropic porous layer saturated with a non-Newtonian fluid by using the Darcy model with the Boussinesq approximations. The horizontal walls of the system are subject to vertical uniform fluxes of heat and mass, whereas the vertical walls are assumed to be adiabatic and impermeable. The Soret effect is taken into consideration. Based on parallel flow approximation theory, the problem is solved in the limit of a thin layer and documented the effects of the physical parameters describing this investigation.

关键词： Soret Number Heat and Mass Transfer Non-Newtonian Fluid Isotropy Ani-sotropy Supercritical Rayleigh Number

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Neutralising effects of small molecule toxin inhibitors on nanofractionated coagulopathic Crotalinae snake venoms

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Acta Pharmaceutica Sinica B 2020年第10期10卷 1835-1845页

作者： Chunfang Xie julien Slagboom Laura-Oana Albulescu Govert W.Somsen Freek J.Vonk Nicholas R.Casewell Jeroen Kool Amsterdam Institute of Molecular and Life Sciences Division of BioAnalytical ChemistryDepartment of Chemistry and Pharmaceutical SciencesFaculty of ScienceVrije Universiteit AmsterdamAmsterdam 1081HVThe Netherlands Centre for Analytical Sciences Amsterdam(CASA) Amsterdam 1098 XHThe Netherlands Centre for Snakebite Research and Interventions Liverpool School of Tropical MedicineLiverpool L35QAUK Centre for Drugs and Diagnostics Liverpool School of Tropical MedicineLiverpool L35QAUK Naturalis Biodiversity Center Leiden 2333 CRThe Netherlands

Repurposing small molecule drugs and drug candidates is considered as a promising approach to revolutionise the treatment of snakebite *** this study,we investigated the inhibiting effects of the small molecules varespladib(nonspecific phospholipase A2 inhibitor),marimastat(broad spectrum matrix metalloprotease inhibitor)and dimercaprol(metal ion chelator)against coagulopathic toxins found in Crotalinae(pit vipers)snake *** from Bothrops asper,Bothrops jararaca,Calloselasma rhodostoma and Deinagkistrodon acutus were separated by liquid chromatography,followed by nanofractionation and mass spectrometry identification undertaken in *** of the venom toxins were then subjected to a high-throughput coagulation assay in the presence of different concentrations of the small molecules under *** venom toxins were mostly identified as phospholipases A2,while procoagulant venom activities were mainly associated with snake venom metalloproteinases and snake venom serine *** was found to effectively inhibit most anticoagulant venom effects,and also showed some inhibition against procoagulant ***,marimastat and dimercaprol were both effective inhibitors of procoagulant venom activities but showed little inhibitory capability against anticoagulant *** information obtained from this study aids our understanding of the mechanisms of action of toxin inhibitor drug candidates,and highlights their potential as future snakebite treatments.

关键词： Snakebite Antivenom Varespladib Marimastat Dimercaprol Chelators Nanofractionation

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Bimanual motor skill learning and robotic assistance for chronic hemiparetic stroke: a randomized controlled trial

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Neural Regeneration Research 2021年第8期16卷 1566-1573页

作者： Maral Yeganeh Doost Benoît Herman Adrien Denis julien Sapin Daniel Galinski Audrey Riga Patrice Laloux Benoît Bihin Yves Vandermeeren UCLouvain CHU UCL Namur–site Mont-GodinneDepartment of NeurologyStroke UnitYvoirBelgium UCLouvain Institute of NeuroScience(IoNS)Clinical neuroscience division(NEUR)divisionBrusselsBelgium UCLouvain Louvain BionicsLouvain-la-NeuveBelgium UCLouvain Institute of MechanicsMaterials and Civil Engineering(iMMC)Louvain-la-NeuveBelgium AXINESIS SA WavreBelgique Scientific Support Unit CHU UCL Namur–site Mont-GodinneYvoirBelgium

Using robotic devices might improve recovery post-stroke, but the optimal way to apply robotic assistance has yet to be determined. The current study aimed to investigate whether training under the robotic active-assisted mode improves bimanual motor skill learning(biMSkL) more than training under the active mode in stroke patients. Twenty-six healthy individuals(HI) and 23 chronic hemiparetic stroke patients with a detectable lesion on MRI or CT scan, who demonstrated motor deficits in the upper limb, were randomly allocated to two parallel groups. The protocol included a two-day training on a new bimanual cooperative task, LIFT-THE-TRAY, under either the active or activeassisted modes(where assistance decreased in a pre-determined stepwise fashion) with the bimanual version of the REAplan? robotic device. The hypothesis was that the active-assisted mode would result in greater biMSkL than the active mode. The biMSkL was quantified by a speed-accuracy trade-off(SAT) before(T1) and immediately after(T2) training on days 1 and 2(T3 and T4). The change in SAT after 2 days of training(T4/T1) indicated that both HI and stroke patients learned and retained the bimanual cooperative task. After 2 days of training, the active-assisted mode did not improve biMSkL more than the active mode(T4/T1) in HI nor stroke patients. Whereas HI generalized the learned bimanual skill to different execution speeds in both the active and active-assisted subgroups, the stroke patients generalized the learned skill only in the active subgroup. Taken together, the active-assisted mode, applied in a pre-determined stepwise decreasing fashion, did not improve biMSkL more than the active mode in HI and stroke subjects. Stroke subjects might benefit more from robotic assistance when applied "as-needed." This study was approved by the local ethical committee(Comité d'éthique médicale, CHU UCL Namur, MontGodinne, Yvoir, Belgium;Internal number: 54/2010, Eudra CT number: NUB B039201317382) on July 1

关键词： bimanual hemiparesis motor learning rehabilitation robotic robotic assistance slacking stroke retention

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Elective operation after acute complicated diverticulitis:Is it still mandatory?

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World Journal of Gastroenterology 2014年第25期20卷 8166-8172页

作者： Valérie Bridoux Marlène Antor Lilian Schwarz julien Cahais Haitham Khalil Francis Michot Jean-Jacques Tuech Department of Digestive Surgery Rouen University Hospital

AIM: To investigate recurrence rates, patterns and complications after nonoperatively managed complicated diverticulitis (CD).

关键词： Diverticulosis Diverticular abscess Hinchey classification Percutaneous drainage Recurrent diverticulitis

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