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人为活动和水动力分选效应对流域风化产物-河流颗粒物的叠合影响

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人为活动和水动力分选效应对流域风化产物-河流颗粒物的叠合影响

Deterministic and probabilistic analysis of great-depth braced excavations:A 32 m excavation case study in Paris

中国矿物岩石地球化学学会第15届学术年会

作者：陈玖斌 Jerome Gaillardet julien bouchez 中国科学院地球化学研究所巴黎地球物理学院(IPGP)

＜正＞河流承载了近90%的从陆地输送到海洋的物质,在元素的地球化学循环中起着重要作用,而河流颗粒物是这些物质的主要载体。因此,河流颗粒物已成为研究陆壳风化强度、重建上地壳组成和历史、计算运输到海洋的物质通量以及判定河流碳循...

＜正＞河流承载了近90%的从陆地输送到海洋的物质,在元素的地球化学循环中起着重要作用,而河流颗粒物是这些物质的主要载体。因此,河流颗粒物已成为研究陆壳风化强度、重建上地壳组成和历史、计算运输到海洋的物质通量以及判定河流碳循环对全球气候影响的重要研究对象。目前,国际上流域研究主要集中在背景区大河流如亚马逊河和有限的自然源元素,受人类活动干扰的中小型河流及与人类活动息息相关

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1505-1521页

作者： Tingting Zhang julien Baroth Daniel Dias Khadija Nejjar Université Grenoble Alpes CNRSGrenoble INP3SRGrenoble38000France Antea Group Antony92160France School of Automotive and Transportation Engineering Hefei University of TechnologyHefei23009China Terrasol 42-52 Quai de la RapéeParis75012France

The Fort d’Issy-Vanves-Clamart(FIVC)braced excavation in France is analyzed to provide insights into the geotechnical serviceability assessment of excavations at great depth within deterministic and probabilistic *** FIVC excavation is excavated at 32 m below the ground surface in Parisian sedimentary basin and a plane-strain finite element analysis is implemented to examine the wall deflections and ground surface settlements.A stochastic finite element method based on the polynomial chaos Kriging metamodel(MSFEM)is then proposed for the probabilistic *** with field measurements and former studies are carried *** academic cases are then conducted to investigate the great-depth excavation stability regarding the maximum horizontal wall deflection and maximum ground surface *** results indicate that the proposed MSFEM is effective for probabilistic analyses and can provide useful insights for the excavation design and construction.A sensitivity analysis for seven considered random parameters is then *** soil friction angle at the excavation bottom layer is the most significant one for *** soil-wall interaction effects on the excavation stability are also given.

关键词： Braced deep excavation Soil-wall interaction Stochastic finite element method Horizontal wall deflection Settlement Failure probability

人为活动和水动力分选效应对流域风化产物-河流颗粒物的叠合影响

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吉林大学学报(地球科学版) 2015年第S1期 402-402页

作者：陈玖斌 Jerome Gaillardet julien bouchez 中国科学院地球化学研究所巴黎地球物理学院(IPGP)

河流承载了近90%的从陆地输送到海洋的物质,在元素的地球化学循环中起着重要作用,而河流颗粒物是这些物质的主要载体。因此,河流颗粒物已成为研究陆壳风化强度、重建上地壳组成和历史、计算运输到海洋的物质通量以及判定河流碳循环对全... 详细信息

河流承载了近90%的从陆地输送到海洋的物质,在元素的地球化学循环中起着重要作用,而河流颗粒物是这些物质的主要载体。因此,河流颗粒物已成为研究陆壳风化强度、重建上地壳组成和历史、计算运输到海洋的物质通量以及判定河流碳循环对全球气候影响的重要研究对象。目前,国际上流域研究主要集中在背景区大河流如亚马逊河和有限的自然源元素,受人类活动干扰的中小型河流及与人类活动息息相关

关键词：风化产物自然源背景区风化强度上地壳全球气候陆壳亚马逊河重要研究对象碳循环

青藏高原岷江上游河水镁同位素季节性变化及其对极端水文事件的响应

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青藏高原岷江上游河水镁同位素季节性变化及其对极端水文事件的响...

Impact of Varying Blower Opening Degrees on Indoor Environment and Thermal Comfort

2023年中国地球科学联合学术年会

作者：徐阳金章东苟龙飞张飞 julien bouchez 李臣子邓丽

化学风化通过消耗大气CO2来调节全球碳循环平衡,维持了地球长期宜居性,在地球系统中发挥着重要的作用,因此需要较好的约束和研究。在全球变暖背景下,极端天气与水文事件频发,化学风化如何响应这些极端事件变化还不清楚,目前尚缺乏可靠... 详细信息

化学风化通过消耗大气CO2来调节全球碳循环平衡,维持了地球长期宜居性,在地球系统中发挥着重要的作用,因此需要较好的约束和研究。在全球变暖背景下,极端天气与水文事件频发,化学风化如何响应这些极端事件变化还不清楚,目前尚缺乏可靠、稳健的示踪手段。镁(Mg)同位素对原生矿物溶解较为敏感,对示踪流域侵蚀和化学风化极具潜力和优势。

关键词：镁同位素极端水文事件季节性变化青藏高原岷江上游

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Fluid Dynamics & Materials Processing 2024年第8期20卷 1703-1716页

作者： Shengqiang Shi Abdelatif Merabtine Rachid Bennacer julien Kauffmann UR LASMIS Universitéde Technologie de Troyes12 Rue Marie CurieTroyes10300France EPF Campus de Troyes Rosière-prés-Troyes10430France Construction Engineering Department École de Technologie Supérieure(ÉTS)University of Québec1100 Rue Notre-Dame OuestMontrealQC H3C 1K3Canada LMT/ENS-Paris-Saclay/CNRS UniversitéParis SaclayGif-sur-Yvette91190France

At present,air handling units are usually used indoors to improve the indoor environment ***,while introducing fresh air to improve air quality,air velocity has a certain impact on the occupants’thermal ***,it is necessary to explore the optimization of air-fluid-body interaction *** this study,the indoor air flow was changed by changing the opening and closing degree of the blower,and the thermal manikin is introduced to objectively evaluate the human thermal comfort under different air *** main experimental results show that the air change rate increases with the increase of the opening and closing degree of the blower considering an ACH(air changes per hour)range between 3.8 and *** a better prediction,a linear correlation with a coefficient of 0.995 is *** the blower’s opening is adjusted to 20%,25%,30%,35%,and 40%,the air velocity sensor positioned directly beneath the air inlet records average velocities of 0.19,0.20,0.21,0.28,and 0.34 m/s over four hours,*** on thermal comfort and the average sensation experienced by individuals indicate an initial increase followed by a decline when the blower’s operation begins,with optimal conditions achieved at a 35%*** findings offer valuable insights for future indoor air ventilation and heat transfer design strategies.

关键词： Air handle unit air velocity thermal comfort thermal sensation

Template-free nanostructured particle growth via a one-pot continuous gradient nanoprecipitation

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Aggregate

Aggregate 2024年第1期5卷 409-418页

作者： Xie Cheng Shuai Wang julien Bernard François Ganachaud Xibo Yan School of Chemical Engineering and Technology Tianjin UniversityTianjinChina College of Food Science and Engineering Tianjin University of Science and TechnologyTianjinChina Universitéde Lyon CNRSUniversitéClaude Bernard Lyon 1INSA-LyonUniversitéJean MonnetUMR5223Ingénierie des Matériaux PolymèresVilleurbanne CedexFrance

Engineered nanoparticles have emerged as new types of materials for a wide range of applications from therapeutics to ***,fabricating nanomaterials presenting complex inner morphologies and shapes in a simple manner remains a great ***,we report the template-free one-pot continuous gradient nanoprecipitation of different types of non-compatible polymers to spontaneously form nanostructured *** continuous addition of antisolvent induces precipitation and(re)organization of polymer chains at the forming particle interface,ultimately and naturally developing complex inner morphologies and shapes while particle *** low-energy-cost bottom-up assembly approach applies to various functional polymers,possibly embedded with metal nanoparticles,for continuous growth into well-organized *** crosslinking of the particles and core removal allows both confirming the building process and leading to hollow or multivoid nanomaterials.

关键词： aggregation nanoprecipitation phase diagrams polymeric nanoparticles self-assembly

Analysis of mid-spatial frequency wavefront distortions from a liquid-cooled flash-lamp pumped Nd:phosphate laser amplifier

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High Power Laser Science and Engineering 2024年第1期12卷 24-29页

作者： Pierre-Marie Dalbies Sandy Cavaro Edouard Bordenave Nathalie Blanchot julien G.Moreau Jérôme Neauport CEA CESTA Le BarpFrance

Mid-spatial frequency wavefront deformation can be deleterious for the operation of high-energy laser systems. When fluid cooled high-repetition-rate amplifiers are used, the coolant flow is likely to induce such detrimental mid-spatial frequency wavefront deformations. Here, we describe the design and performance of a 90 mm × 90 mm aperture, liquid-cooled Nd:phosphate split-slab laser amplifier pumped by flash-lamps. The performance of the system is evaluated in terms of wavefront aberration and gain at repetition rates down to 1 shot per minute. The results show that this single cooled split-slab system exhibits low wavefront distortions in the medium to large period range, compatible with a focus on target, and despite the use of liquid coolant traversed by both pump and amplified wavelengths. This makes it a potential candidate for applications in large high-energy laser facilities.

关键词： flash-lamp pumping high-power laser laser cooling neodymium glass wavefront error

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Late-onset Very long-chain acyl-CoA dehydrogenase deficiency diagnosis complicated by fulminant myocarditis in adult patient

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Journal of Intensive Medicine 2024年第3期4卷 400-402页

作者： Martin Gérard Clair Douillard julien Poissy Mehdi Marzouk Christophe Vinsonneau Intensive Care Unit Centre Hospitalier de Bethune-BeuvryBethuneFrance Endocrinology diabetologymetabolism departmentLille reference centre of inborn errors of metabolismLille University HospitalLilleFrance Inserm U1285 CHU LillePôle de réanimationCNRSUMR 8576-UGSF-Unitéde Glycobiologie Structurale et FonctionnelleUniv.LilleLilleFrance

Introduction A 21-year-old woman presented to the emergency department with fatigue,abdominal pain and *** physical activity in school was strictly *** had no family medical history and no personal history but reported frequent episodes of nausea and vomiting lasting 2 to 7 days during the past two years,as well as a weight loss of 9 kg due to reactive anorexia(Body Mass Index 17.5),without triggering factors or *** gastrointestinal symptoms led to the detection of isolated elevated transaminases(aspartate aminotransferase[AST]190 U/L and alanine aminotransferase[ALT]170 U/L);however,the patient did not pursue the proposed etiological *** has been using cannabis once a day for several years,with an increase in consumption over the past year,but no *** reported no other recent change in her habits.

关键词： diagnosis patient elevated

A transcriptional cascade mediated by two APETALA2 family members orchestrates carotenoid biosynthesis in tomato

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Journal of Integrative Plant Biology 2024年第6期66卷 1227-1241页

作者： Xiaoqing He Kaidong Liu Yi Wu Weijie Xu Ruochen Wang julien Pirrello Mondher Bouzayen Mengbo Wu Mingchun Liu Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065China Life Science and Technology School Lingnan Normal UniversityZhanjiang 524048China Laboratoire de Recherche en Sciences Vegetales—Genomique et Biotechnologie des Fruits—UMR5546 Universite de ToulouseCNRSUPSToulouse-INPToulouse 31013France

Carotenoids are important nutrients for human health that must be obtained from plants since they cannot be biosynthesized by the human *** the regulatory mechanism of carotenoid metabolism in plants represents the first step toward manipulating carotenoid contents in plants by molecular design *** this study,we determined that SlAP2c,an APETALA2(AP2)family member,acts as a transcriptional repressor to regulate carotenoid biosynthesis in tomato(Solanum lycopersicum).Knockout of SlAP2c in both the“Micro Tom”and“Ailsa Craig”backgrounds resulted in greater lycopene accumulation,whereas overexpression of this gene led to orange-ripe fruit with significantly lower lycopene contents than the wild *** established that SlAP2c represses the expression of genes involved in lycopene biosynthesis by directly binding to the cis-elements in their ***,SlAP2c relies on its EAR motif to recruit the co-repressors TOPLESS(TPL)2/4 and forms a complex with histone deacetylase(had)1/3,thereby reducing the histone acetylation levels of lycopene biosynthesis ***,SlAP2a,a homolog of SlAP2c,acts upstream of SlAP2c and alleviates the SlAP2c-induced repression of lycopene biosynthesis genes by inhibiting SlAP2c transcription during fruit ***,we identified a transcriptional cascade mediated by AP2 family members that regulates lycopene biosynthesis during fruit ripening in tomato,laying the foundation for the manipulation of carotenoid metabolism in plants.

关键词： APETALA2 family members carotenoid biosynthesis tomato transcriptional cascade

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