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Urbanization reduces resource use efficiency of phytoplankton community by altering the environment and decreasing biodiversity

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Journal of Environmental Sciences 2022年第2期34卷 140-151页

作者： Yigang Yang Huihuang Chen Mamun Abdullah Al jean claude Ndayishimiye Jun R Yang Alain Isabwe Anqi Luo Jun Yang Aquatic EcoHealth Group Fujian Key Laboratory of Watershed EcologyKey Laboratory of Urban Environment and HealthInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Engineering Research Center of Ecology and Agricultural Use of Wetland(Ministry of Education) College of AgricultureYangtze UniversityJingzhou 434025China

Urbanization often exerts multiple effects on aquatic and terrestrial organisms,including changes in biodiversity,species composition and ecosystem ***,the impacts of urbanization on river phytoplankton in subtropical urbanizing watersheds remain largely ***,we explored the effects of urbanization on phytoplankton community structure(i.e.,biomass,community composition and diversity)and function(i.e.,resource use efficiency)in a subtropical river at watershed scale in southeast China over 6 years.A total of 318 phytoplankton species belonging into 120 genera and 7 phyla were identified from 108 *** biomass showed an increasing trend with increasing urbanization *** phytoplankton community shifted from Chlorophyta dominance in rural upstream waters to Bacillariophyta dominance in urbanized downstream ***,phytoplankton diversity and resource use efficiency(RUE=phytoplankton biomass/total phosphorus)were significantly decreased with increasing urbanization level from upstream to *** RUE exhibited a significant positive correlation with species richness,but a negative correlation with phytoplankton *** variation in environmental factors(turbidity,total nitrogen,NH_(4)^(+)-N,total phosphorus,PO_(4)^(3-)-P and percentage urbanized area)was significantly correlated with phytoplankton diversity and ***,our results revealed the influence of urbanization on phytoplankton community structure and ecosystem function was due to its altering the environmental ***,human-driven urbanization may play crucial roles in shaping the structure and function of phytoplankton communities in subtropical rivers,and the mechanism of this process can provide important information for freshwater sustainable uses,watershed management and conservation.

关键词： Plankton Community functioning Subtropical river Urbanization gradient Land use Watershed ecology

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Micromorphological description of vernacular cob process and comparison with rammed earth

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Frontiers of Architectural Research 2020年第1期9卷 203-215页

作者： Erwan Hamard Cécilia Cammas Blandine Lemercier Bogdan Cazacliu jean-claude Morel IFSTTAR MASTGPEMF-44344BouguenaisFrance INRAP UMR 5140AgroParisTechF-78850Thiverval-GrignonFrance UMR SAS AGROCAMPUS OUESTINRAF-35042RennesFrance Faculty of Engineering Environment and ComputingCentre for the Built and Natural EnvironmentCoventry UniversityCoventryCV15FBUK

Past builders have developed very low-embodied energy construction techniques optimizing the use of local building *** techniques are a source of inspiration for modern sustainable ***,this know-how was orally transmitted and was lost as earth construction fell into disuse during the 20th century in European *** absence of written documents makes necessary to use an archaeological approach in order to rediscover these construction *** analysis of thin sections collacted in earth building walls was used for the first time to describe cob construction technique and highlighted several typical pedofeatures allowing to clearly identifying this ***,a first comparison of the cob and rammed earth micromorphological features permitted to identify two key factors to distinguish these two techniques,the manufacturing state(solid or plastic)and the organization of the material in the wall.

关键词： Cob Rammed earth Micromorphology Architectural heritage Pedology

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Anorectal and Colonic Diseases 3rd ed. 2010

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2010年

作者： jean-claude Givel Neil James Mortensen Bruno Roche

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Lanthanide-doped nanoscintillators

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Light(Science & Applications) 2022年第10期11卷 2264-2266页

作者： jean-claude Georges Bünzli institute of Chemical Sciences and Engineering Swiss Federal Institute of TechnologyLausanne(EPFL)LausanneSwitzerland Department of Biomedical Engineering Southern University of Science and Technology(SUSTech)ShenzhenChina

Lanthanide-doped nanoscintillators are taking the lead in several important fields including radiation detection,biomedicine,both at the level of diagnosis and therapy,and information encoding.

关键词： diagnosis Lanthanide ill

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Basic deep eutectic solvents as reactant, template and solvents for ultra-fast preparation of transition metal oxide nanomaterials

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Chinese Chemical Letters 2020年第6期31卷 1584-1587页

作者： Jia Chen Mohammad Chand Ali Ruirui Liu jean claude Munyemana Zhan Li Honglin Zhai Hongdeng Qiu CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000.China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100039China Department of Chemistry Lanzhou UniversityLanzhou 730000.China

Developing a new type of deep eutectic solvents(DESs)is indispensable for expanding their application in various ***,we report a series of new highly basic ***-IR,quantitative 1 H NMR,MD simulation and physical properties show that these basic liquids are made up of hydroxide acceptor of alkali metal hydroxides in which the hydrogen bonding interactions coordinate the *** DESs can be played three roles as new solvents,template and reactant for facile and ultra-fast preparation of transition metal oxide nanomaterials such as NiCo2 O4,MnCo2 O4,NiMn2 O4,CoCu2 O4 and Co3 O4 under mild *** work shows one of the low energy-intensive methods for nanomaterial *** initial findings of basic deep eutectic solvents provide a potential applicability around the systematic development of transition metal oxide nanosheets.

关键词： Basic deep eutectic solvents Hydrogen-bonding acceptors Hydrogen-bonding donors Transition metal oxide Nanomaterials

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金属注射成形烧结工艺的试验与数值模拟

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机械工程学报 2008年第8期44卷 157-163页

作者：宋久鹏 BARRIERE Thierry 柳葆生 GELIN jean-claude 西南交通大学应用力学与工程系成都610031 法国Femto-ST研究所应用力学实验室

采用粘塑性理论建立烧结过程的本构模型,以316L不锈钢粉末注射成形产品为例,设计出烧结过程中重力作用下弯曲梁试验和膨胀计中的自由烧结试验,分别用于标定本构模型中的粘度模量和烧结应力。通过用户子程序,在有限元求解器Abaqus^(?)上... 详细信息

采用粘塑性理论建立烧结过程的本构模型,以316L不锈钢粉末注射成形产品为例,设计出烧结过程中重力作用下弯曲梁试验和膨胀计中的自由烧结试验,分别用于标定本构模型中的粘度模量和烧结应力。通过用户子程序,在有限元求解器Abaqus^(?)上实现数值模拟,预测产品在烧结过程中的收缩和变形。考虑了重力、摩擦以及注射阶段粉末与粘结剂的偏析效应对于烧结工艺的影响,数值模拟结果与试验结果一致。

关键词：金属注射成形烧结粘塑性有限元法

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Automatic sub-pixel co-registration of Landsat-8 Operational Land Imager and Sentinel-2A Multi-Spectral Instrument images using phase correlation and machine learning based mapping

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International Journal of Digital Earth 2017年第12期10卷 1253-1269页

作者： Sergii Skakun jean-claude Roger Eric F.Vermote Jeffrey G.Masek Christopher O.Justice Department of Geographical Sciences University of MarylandCollege ParkMDUSA NASA Goddard Space Flight Center Code 619 GreenbeltMDUSA NASA Goddard Space Flight Center Code 618 GreenbeltMDUSA

This study investigates misregistration issues between Landsat-8/Operational Land Imager and Sentinel-2A/Multi-Spectral Instrument at 30 m resolution,and between multi-temporal Sentinel-2A images at 10 m resolution using a phase-correlation approach and multiple transformation ***-registration of 45 Landsat-8 to Sentinel-2A pairs and 37 Sentinel-2A to Sentinel-2A pairs were *** correlation proved to be a robust approach that allowed us to identify hundreds and thousands of control points on images acquired more than 100 days ***,misregistration of up to 1.6 pixels at 30 m resolution between Landsat-8 and Sentinel-2A images,and 1.2 pixels and 2.8 pixels at 10 m resolution between multi-temporal Sentinel-2A images from the same and different orbits,respectively,were *** non-linear random forest regression used for constructing the mapping function showed best results in terms of root mean square error(RMSE),yielding an average RMSE error of 0.07±0.02 pixels at 30 m resolution,and 0.09±0.05 and 0.15±0.06 pixels at 10 m resolution for the same and adjacent Sentinel-2A orbits,respectively,for multiple tiles and multiple conditions.A simpler 1st order polynomial function(affine transformation)yielded RMSE of 0.08±0.02 pixels at 30 m resolution and 0.12±0.06(same Sentinel-2A orbits)and 0.20±0.09(adjacent orbits)pixels at 10 m resolution.

关键词： Sub-pixel co-registration phase correlation misregistration Landsat-8 Sentinel-2 machinelearning random forest

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Chemokine system polymorphisms, survival and hepatocellular carcinoma occurrence in patients with hepatitis C virus-related cirrhosis

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World Journal of Gastroenterology 2008年第5期14卷 713-719页

作者： Pierre Nahon Angela Sutton Pierre Rufat Chantal Simon jean-claude Trinchet Liliane Gattegno Michel Beaugrand Nathalie Charnaux Department of Hepatology Jean Verdier Hospital (AP-HP) Bondy 93140 France Department of Biochemistry Jean Verdier Hospital (AP-HP) Bondy 93140 France Department of Public Health Pitié-Salpetrière Hospital (AP-HP) Paris 75013 France

AIM： To explore the influence of polymorphisms in genes encoding for the chemokines Stromal cell-Derived Factor-1 （SDF-1）/CXCL12 and Monocyte Chemotactic Protein-1 （MCP-1）/CCL2, or for the chemokine receptor CCR5 on the risks of liver-related death and hepatocellular carcinoma （HCC） occurrence in hepatitis C virus （HCV）-infected patients. METHODS： SDF-1 3＇A, MCP-1 （-2518） and CCRS-△32 polymorphisms, SDF-1α, Regulated upon Activation Normal T cells Expressed and Secreted （RANTES）/CCL5 and MCP-1 serum levels were determined in 120 HCV- infected patients, included at time of cirrhosis diagnosis and prospectively followed-up. RESULTS： During follow-up, 23/120 （19.1%） patients died and 47/120 （39.1%） developed HCC. Carriers and noncarriers of each genetic marker had similar baseline characteristics estimating the severity of liver disease. The occurrence of death or HCC during follow-up was similar among carriers and noncarriers of each polymorphism. There was no association between the carriage of mutated alleles and chemokine serum levels and the latter were not associated with the risks of death or HCC. CONCLUSION： This study suggests the lack of association of SDF-1 3＇A, MCP-1 （-2518）, CCRS-△32 polymorphisms with death and HCC occurrence in cirrhotic HCV-infected patients.

关键词： Chemokine Polymorphism Cirrhosis Hepatocarcinoma Hepatitis C virus

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The synergy between the payloads on the ASO-S mission

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Research in Astronomy and Astrophysics 2019年第11期19卷 115-126页

作者： jean-claude Vial Institut d’Astrophysique Spatiale University Paris-Sud

This paper addresses the improved science resulting from joint observations performed by the different instruments onboard the Advanced Space-based Solar Observatory(ASO-S)mission along with ancillary instruments on missions flying at the same *** first describes the three major instruments along with their stated *** it presents some basic science issues concerning jointly observed flares,coronal mass ejections(CMEs)and eruptive prominences(EPs).Each physical candidate(magnetic reconnection,instability,hard X-ray emission and magnetic coronal field topology)is discussed in terms of its signature and identification with ASO-S *** importance of Lyαdetection and non-LTE modeling is *** instrumental and science challenges are briefly discussed.

关键词： techniques imagery,polarimetry-Sun eruptions,flares,coronal mass ejections

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Double ischemic ileal stenosis secondary to mesenteric injury after blunt abdominal trauma

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World Journal of Gastroenterology 2008年第1期14卷 143-145页

作者： Valérie Bougard claude Avisse Martine Patey Denis Germain Nathalie Levy-Chazal jean-Franois Delattre Service de Chirurgie Viscérale Digestive et Endocrinienne CHU Reims Hpital Robert Debré Reims France Martine Patey Laboratoire Central d’Anatomie et de Cytologie Pathologiques CHU Reims Hpital Robert Debré Reims France Denis Germain Laboratoire Photographique CHU ReimsHpital Robert Debré Reims France

The authors describe a rare case in which blunt abdominal trauma resulted in mesenteric injury with delayed double ischemic ileal stenosis. Abdominal computed tomography demonstrated stenotic ileal loop with mural thickening. At surgery, a double stenotic bowel loop was found adjacent to a healed defect in the mesentery. Histological examination of the two resected segments showed fibrotic and ischemic lesions within the mesentery. Ischemic intestinal stenosis from mesenteric injury should be considered in the differential diagnosis in patients suffering from intestinal occlusion with a history of blunt abdominal trauma.

关键词： Blunt abdominal trauma Mesenteric injury Intestinal stenosis Obstruction

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