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Increasing importance of ammonia emission abatement in PM_(2.5)pollution control

Science Bulletin 2022年第17期67卷 1745-1749页

作者： Wen Xu Yuanhong Zhao Zhang Wen Yunhua Chang Yuepeng Pan Yele Sun Xin Ma Zhipeng Sha Ziyue Li Jiahui Kang Lei Liu Aohan Tang Kai Wang Ying Zhang Yixin Guo Lin Zhang Lifang Sheng Xiuming Zhang Baojing Gu Yu Song Martin Van Damme Lieven Clarisse pierre-françois coheur Jeffrey L.Collett Jr Keith Goulding Fusuo Zhang Kebin He Xuejun Liu College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationNational Observation and Research tation of Agriculture Green Development(QuzhouHebei)China Agricultural UniversityBeijing 100193China College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Desasters Nanjing University of Information Science&TechnologyNanjing 200433China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China School of Agriculture and Food the University of MelbourneVictoria 3010Australia College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310058China State Key Joint Laboratory of Environmental Simulation and Pollution Control Department of Environmental SciencePeking UniversityBeijing 100871China Universitélibre de Bruxelles SpectroscopyQuantum Chemistry and Atmospheric Remote SensingBrusselsBelgium Department of Atmospheric Science Colorado State UniversityFort Collins CO 80523USA Sustainable Agricultural Sciences Department Rothamsted ResearchHarpenden AL52JQUK School of Environment Tsinghua UniversityBeijing 100084China

在新冠肺炎疫情期间,中国采取的管制封锁措施大幅减少了交通和工业排放,但农业排放没有受到影响,甚至有所增加.通过全国大气氨浓度地面监测、实时连续观测和卫星观测等手段,我们发现,新冠肺炎疫情管制措施实施期间中国大气氨浓度大范围... 详细信息

在新冠肺炎疫情期间,中国采取的管制封锁措施大幅减少了交通和工业排放,但农业排放没有受到影响,甚至有所增加.通过全国大气氨浓度地面监测、实时连续观测和卫星观测等手段,我们发现,新冠肺炎疫情管制措施实施期间中国大气氨浓度大范围显著增加,上升幅度在农村地区最为明显(增加22%),在城市和偏远地区变化不明显;而且,管控期间大气氨浓度上升幅度与2015~2019年相同月份相比更大.基于大气化学模式模拟发现,中国北方大气氨浓度上升主要是由农业氨排放增加所致.随着未来我国二氧化硫和氮氧化物等酸性气体排放控制的强化,农业氨排放的协同减排对于进一步削减大气PM污染、提升空气质量尤为重要.进一步分析表明,疫情期间50%农业氨排放可有效抵消氨浓度上升造成的二次无机气溶胶的形成.

关键词：管制措施工业排放污染治理地面监测空气质量卫星观测 PM 偏远地区

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SEPARATION OF SCALES IN ELASTICITY IMAGING:A NUMERICAL STUDY

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Journal of Computational Mathematics 2010年第3期28卷 354-370页

作者： Habib Ammari pierre Garapon franois Jouve Institut Langevin Laboratoire Ondes et Acoustique Laboratoire J.L.Lions Universite Paris Ⅶ Laboratoire J.L.Lions Université Paris Ⅶ

In magnetic resonance elastography, one seeks to reconstruct the shear modulus from measurements of the displacement field in the whole body. In this paper, we present an optimization approach which solves the problem by simply minimizing a discrepancy functional. In order to recover a complex anomaly in a homogenous medium, we first observe that the information contained in the wavefield should be decomposed into two parts, a ＂near-field＂ part in the region around the anomaly and a ＂far-field＂ part in the region away from the anomaly. As will be justified both theoretically and numerically, separating these scales provides a local and precise reconstruction.

关键词： Elastography multi-scale imaging anomaly reconstruction.

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Ruptured hydatid cyst in a patient with shock

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Hepatobiliary & Pancreatic Diseases International 2009年第6期8卷 638-639页

作者： Diego Castanares-Zapatero pierre franois Laterre Cliniques Universitaires Saint Luc Université Catholique de Louvain(UCL)Department of Critical Care MedicineAvenue Hippocrate

Echinococcosis is a severe helminthic zoonosis largely caused by Echinococcus granulosus and frequently encountered in endemic *** liver and lung are the most frequently involved *** rupture into the peritoneal cavity represents a rare but serious ***,we describe an acute occurrence of anaphylactic shock due to a spontaneous rupture of hydatid cyst in a 21-year-old Turkish patient unwittingly infected by *** surgery of the perforated cyst in combination with cleaning of the abdominal cavity was *** patient rapidly improved and no relapse occurred during a follow-up of 8 *** is a serious complication of hydatid cyst rupture and needs to be promptly *** main objective of our report is to underscore this life-threatening complication that should be considered when anaphylactic shock of unknown origin occurs,even in non-endemic ***,we emphasize the need for a radical surgical approach to avoid widespread dissemination.

关键词： ruptured hydatid liver cyst anaphylactic shock albendazole

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Additive neurorestorative effects of exercise and docosahexaenoic acid intake in a mouse model of Parkinson’s disease

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Neural Regeneration Research 2025年第2期20卷 574-586页

作者： Olivier Kerdiles Méryl-Farelle Oye Mintsa Mi-mba Katherine Coulombe Cyntia Tremblay VincentÉmond Martine Saint-pierre Clémence Rouxel Line Berthiaume pierre Julien francesca Cicchetti Frédéric Calon Facultéde pharmacie UniversitéLaval1050 Avenue de la MédecineQuebecQCCanada Axe Neuroscience Centre de recherche du CHU de Québec-UniversitéLaval(Pavillon CHUL)2705 Boulevard LaurierQuebecQCCanada Institute of Nutrition and Functional Foods QuebecQCCanada Optinutribrain International Associated Laboratory(NutriNeuro FranceINAFCanada)QuebecQCCanada Axe Endocrinologie et Néphrologie Centre de recherche du CHU de Québec-UniversitéLavalQuebecQCCanada Département de Médecine Facultéde MédecineUniversitéLavalQuebecQCCanada Département de Psychiatrie et Neurosciences Facultéde MédecineQuebecQCCanada

There is a need to develop interventions to slow or reverse the degeneration of dopamine neurons in Parkinson’s disease after *** that preclinical and clinical studies suggest benefits of dietary n-3 polyunsaturated fatty acids,such as docosahexaenoic acid,and exercise in Parkinson’s disease,we investigated whether both could synergistically interact to induce recovery of the dopaminergic ***,mice received a unilateral stereotactic injection of 6-hydroxydopamine into the striatum to establish an animal model of nigrostriatal *** weeks after lesion,animals were fed a docosahexaenoic acid-enriched or a control diet for the next 8 *** this period,the animals had access to a running wheel,which they could use or *** acid treatment,voluntary exercise,or the combination of both had no effect on(i)distance traveled in the open field test,(ii)the percentage of contraversive rotations in the apomorphine-induction test or(iii)the number of tyrosine-hydroxylase-positive cells in the substantia nigra pars ***,the docosahexaenoic acid diet increased the number of tyrosine-hydroxylase-positive terminals and induced a rise in dopamine concentrations in the lesioned *** to docosahexaenoic acid treatment or exercise alone,the combination of docosahexaenoic acid and exercise(i)improved forelimb balance in the stepping test,(ii)decreased the striatal DOPAC/dopamine ratio and(iii)led to increased dopamine transporter levels in the lesioned *** present results suggest that the combination of exercise and docosahexaenoic acid may act synergistically in the striatum of mice with a unilateral lesion of the dopaminergic system and provide support for clinical trials combining nutrition and physical exercise in the treatment of Parkinson’s disease.

关键词： 6-hydroxydopamine dopamine dopamine transporter exercise neurorestoration Parkinson’s disease polyunsaturated fatty acids omega-3

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Triaxial tension and compression tests on saturated lime-treated plastic clay upon consolidated undrained conditions

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第12期15卷 3328-3342页

作者： Kuchvichea Kan Bertrand françois Department of Civil Engineering Institute of Technology of CambodiaPhnom PenhCambodia BATir Department UniversitéLibre de BruxellesBrusselsBelgium ArGEnCo Departement Universitéde LiègeLiègeBelgium

Lime-treatment of clayey soil significantly increases its shear and tensile ***,the tensile strength of lime-treated soils deserves careful investigation because it may provide an appreciable benefit for the stability of earth *** study investigates the tensile and shear strengths of an untreated and lime-treated(3%of lime)plastic clay at different curing times(7 d,56 d and 300 d),through triaxial tension and compression *** tension tests are performed using“diabolo-shaped”soil samples with reduced central section,such that the central part of the specimen can be under axial tension while both end-sections remain in axial *** undrained(CU)conditions with measurement of pore water pressure allow analyzing the failure conditions through effective stress and total stress *** results of triaxial tension tests reveal that the failure occurs under tensile mode at low confining pressure while extensional shear failure mode is observed under higher confining ***,a classical Mohr-Coulomb shear failure criterion must be combined with a cut-off tensile strength criterion that is not affected by the confining *** comparing shear failure under compression and tension,a slight anisotropy is observed.

关键词： Tensile strength Consolidated undrained(CU)triaxial test Lime-treated soils Failure criterion

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Influence of the iodide/iodine redox system on the self-discharge of AC/AC electrochemical capacitors in salt aqueous electrolyte

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Progress in Natural Science:Materials International 2015年第6期25卷 622-630页

作者： Qamar Abbas fran?ois Béguin Institute of Chemistry and Technical Electrochemistry Poznan University of Technology

Self-discharge(SD) of AC/AC(AC ? activated carbon) electrochemical capacitors in aqueous solutions of lithium sulfate(Li2SO4) and lithium sulfate t iodide salts(Li2SO4tKI or Li2SO4tLi I) was investigated at 24 1C and 40 1C after cell potential hold at values from 1 V to 1.6 ***24 1C,the cells exhibit lower SD in Li2SO4tKI than in Li2SO4,owing to the redox activity of the 2I /I2 system which drives the positive AC electrode to operate in narrow potential range and display lower potential drop than in *** 401 C,the capacitors exhibit comparable and reduced SD both in Li2SO4tLi I and Li2SO4,whatever the holding cell ***-electrode cell experiments demonstrate that,at 40 1C,hydrogen chemisorption is thermodynamically unfavored under negative polarization,while the activity of the 2I /I2 redox system under positive polarization is only slightly *** a consequence,the AC/AC cells in Li2SO4 exhibit a typical electrical double-layer performance at 401 C,whereas they still behave as hybrid ones in Li2SO4tLi I,with twice higher capacitance than in ***(Ui-Ut) vs t1/2plots demonstrate that SD is essentially controlled by diffusion at 401 C,suggesting that it originates from bulkier hydrated ***,in the investigated temperature range,the AC/AC capacitors in Li2SO4tLi I demonstrate low self-discharge and high capacitance,while being able to operate up to 1.6 V.

关键词： Supercapacitors Activated carbon Self-discharge Salt aqueous electrolyte Iodide/iodine redox system Activation and diffusion controlled mechanisms

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A spotlight on dosage and subject selection for effective neuroprotection: exploring the central role of mitochondria

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Neural Regeneration Research 2025年第4期20卷 1081-1082页

作者： John Mitrofanis Jonathan Stone Michael R.Hamblin pierre Magistretti Alim-Louis Benabid Glen Jeffery Fonds Clinatec UniversitéGrenoble AlpesGrenobleFrance School of Medical Science University of SydneySydneyAustralia Faculty of Health Sciences University of JohannesburgJohannesburgSouth Africa King Abdullah University of Science and Technology ThuwalSaudi Arabia Institute of Ophthalmology University College LondonLondonUK

Neurons are notoriously vulnerable cell *** the slightest change in their internal and/or external environments will cause much distress and dysfunction,leading often to their death.A range of pathological conditions,including stroke,head trauma,and neurodegenerative disease,can generate stress in neurons,affecting their survival and proper *** most neural pathologies,mitochondria become dysfunctional and this plays a pivotal role in the process of cell *** challenge over the last few decades has been to develop effective interventions that improve neuronal homeostasis under pathological *** interventions,often referred to as disease-modifying or neuroprotective,have,however,proved frustratingly elusive,at both preclinical and,in particular,clinical *** this perspective,we highlight two factors that we feel are key to the development of effective neuroprotective *** are:firstly,the choice of dose of intervention and method of application,and secondly,the selection of subjects,whether they be patients or the animal model.

关键词： protective dosage distress

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Modeling of 3-D Losses and Deviations in a Throughflow Analysis Tool

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Journal of Thermal Science 2007年第3期16卷 208-214页

作者： Jean-fran■ois Simon OlivierLéonard Techspace Aero-Aerodynamic Group University

This contribution is dedicated to the modeling of the end-wall flows in a throughflow model for turbomachinery applications. The throughflow model is based on the Euler or Navier-Stokes equations solved by a Finite-Volume technique. Two approaches are presented for the end-wall modeling. The first one is based on an inviscid formulation with dedicated 3-D distributions of loss coefficient and deviation in the end-wall regions. The second approach is directly based on a viscous formulation with no-slip boundary condition along the annular end-walls and blade force modification in the region close to the end-walls. The throughflow results are compared to a series of 3-D Navier-Stokes calculations averaged in the circumferential direction. These 3-D calculations were performed on the three rotors of a low pressure axial compressor, for a series of tip clearance values.

关键词： throughflow losses deviations axial compressors

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Diversity considerations in wideband radar detection of migrating targets in clutter

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Science China(Information Sciences) 2019年第4期62卷 31-40页

作者： franois LE CHEVALIER Nikita PETROV Department Microwave Sensing Signals and Systems (MS3) Delft University of Technology

Wideband radars have been proposed for detection of moving targets, with unique capability of non-ambiguous detection due to range migration. Moreover, frequency diversity has long been used for mitigating the fading effects caused by target and clutter fluctuations. The real benefits of wideband radars are difficult to analyze, since they derive from the combined effects of target resolution in range, migration over successive cells of clutter, Doppler resolution and instantaneous bandwidth, and residual ambiguities in Doppler. In order to contribute to a better understanding of the benefits of agile transmissions for detection of moving targets, clutter cancelling performances of wideband radars are examined, demonstrating clear benefits from diversity on clutter and target, primarily – but not only – obtained through target migration effects. Special attention is given to long-range surveillance and tracking, and new results on detection of moving targets in clutter will be provided to demonstrate the effectiveness of these new architectures for small targets detection at long range, in difficult environments. Finally, recommendations for system designs that improve the discrimination of moving targets against fixed and diffuse clutter are presented.

关键词： radar extended target frequency diversity wideband detection target migration clutter cancelling

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One-Dimensional Symmetry and Liouville Type Results for the Fourth Order Allen-Cahn Equation in R^N

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Chinese Annals of Mathematics,Series B 2017年第1期38卷 149-172页

作者： Denis BONHEURE franois HAMEL Département de Mathématique Université libre de Bruxelles INRIA-Team MEPHYSTO Aix Marseille Univ CNRSCentrale Marseille

In this paper, the authors prove an analogue of Gibbons' conjecture for the extended fourth order Allen-Cahn equation in R^N, as well as Liouville type results for some solutions converging to the same value at infinity in a given direction. The authors also prove a priori bounds and further one-dimensional symmetry and rigidity results for semilinear fourth order elliptic equations with more general nonlinearities.

关键词： Fourth order elliptic equation Allen-Cahn equation Extended Fisher-Kolmogorov equation One-dimensional symmetry Liouville type results

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