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One decade(2011–2020)of european agricultural water stress monitoring by MSG-SeVIRI:workflow implementation on the Virtual earth Laboratory(VLab)platform

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International Journal of Digital earth 2022年第1期15卷 730-747页

作者： Bagher Bayat Carsten Montzka Alexander Graf Gregory Giuliani Mattia Santoro Harry Vereecken Institute of Bio-and Geosciences:Agrosphere (IBG-3) Forschungszentrum Jülich GmbHJülichGermany Institute for environmental Sciences EnviroSPACE labUniversity of GenevaGenevaSwitzerland Institute of Atmospheric Pollution Research National Research Council of Italy (CNR)Sesto FiorentinoItaly

Cloud computing facilities can provide crucial computing support for processing the time series of satellite data and exploiting their spatio-temporal information ***,dedicated efforts are still required to develop workflows,executable on cloud-based platforms,for ingesting the satellite data,performing the targeted processes,and generating the desired *** this study,an operational workflow is proposed,based on monthly evaporative Stress Index(eSI)anomaly,and implemented in cloud-based online Virtual earth Laboratory(VLab)platform,as a demonstration,to monitor european agricultural water *** this end,daily time-series of actual and reference evapotranspiration(eTa and eT0),from the Spinning enhanced Visible and Infrared Imager(SeVIRI)sensor,were used to execute the proposed workflow successfully on *** execution of the workflow resulted in obtaining one decade(2011–2020)of european monthly agricultural water stress maps at 0.04˚spatial resolution and corresponding stress reports for each *** support open science,all the workflow outputs are stored in GeoServer,documented in GeoNetwork,and made available through *** enables creating a dashboard for better visualization of the results for *** results from this study demonstrate the capability of VLab platform for water stress detection from time series of SeVIRI-eT data.

关键词： eT SeVIRI eSI water stress workflow europe VLab demonstration

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Assessing the Storage Root Development of Cassava with a New Analysis Tool

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Plant Phenomics 2022年第1期4卷 43-57页

作者： Jens Wilhelm Tobias Wojciechowski Johannes A.Postma Dirk Jollet Kathrin Heinz Vera Bockem Mark Muller-Linow Institute of Plant Sciences IBG-2Forschungszentrum Julich GmbH52425 JulichGermany Tesla Automation GmbH 54595 PrumGermany

Storage roots of cassava plants crops are one of the main providers of starch in many South American,African,and Asian *** varieties with high yields is crucial for growing and *** requires a better understanding of the dynamics of storage root formation,which is usually done by repeated manual evaluation of root types,diameters,and their distribution in excavated *** introduce a newly developed method that is capable to analyze the distribution of root diameters automatically,even if root systems display strong variations in root widths and clustering in high *** application study was conducted with cassava roots imaged in a video acquisition *** root diameter distribution was quantified automatically using an iterative ridge detection approach,which can cope with a wide span of root diameters and *** approach was validated with virtual root models of known geometries and then tested with a time-series of excavated root *** on the retrieved diameter classes,we show plausibly that the dynamics of root type formation can be monitored qualitatively and *** conclude that this new method reliably determines important phenotypic traits from storage root crop *** method is fast and robustly analyses complex root systems and thereby applicable in high-throughput phenotyping and future breeding.

关键词： crops roots Storage

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Magnetic skyrmion bundles join the family of topological solitons

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Science China(Physics,Mechanics & Astronomy) 2022年第4期65卷 123-124页

作者： Nikolai S.Kiselev Peter Grünberg Institut and Institute for Advanced Simulation Forschungszentrum JülichJülich D-52425Germany

Magnetic solitons are localized magnetic textures that are similar to ordinary particles-they have defined size and can move and interact with each other. Topological solitons [1],in addition, are characterized by the so-called topological charge or topological index, which allows classifying magnetic solitons and has the following meaning.

关键词： topological solitons ordinary

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Isospin violation,light quark masses,and all that

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Chinese Physics C 2010年第9期34卷 1163-1168页

作者： Ulf-G.Meiβner HISKP and Bethe Center for Theoretical Physics Universitt Bonn IKP-3 IAS-4 and JCHPForschungszentrum Jülich

Isospin violation is driven through the light quark mass difference and electromagnetic effects.I review recent progress in extracting the light quark mass difference and tests of the chiral dynamics of Quantum Chromo... 详细信息

关键词： quantum chromodynamics isospin violation quark masses chiral Lagrangians

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eXTReMe PROPeRTIeS OF FIBeR COMPOSITeS AND THeIRCRYOGeNIC APPLICATIONS

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Acta Metallurgica Sinica(english Letters) 1997年第3期10卷 283-289页

作者： G. Hartwig(forschungszentrum Karlsruhe, Germally D-76021 Karlsruhe, P.B.3640) forschungszentrum Karlsruhe Karlsruhe Germany

Fiber-polymer composites exhibit extraordianary and unusual properties. Depending on the fiber type and arrangementt the following can be achieved: a very high tensile strength and stiffness or fatigue strength, a zero or negative thermal expension, a rather high damping capability and a very high thermal and electrical insulating performance. But even carbon fibers can be converted into excellent electrical conductors when calined with fluorine. However, the shear properties of fiber composites with a polymeric matrix are medium. extreme mechanical and thermal cryogenic properties will be discussed and compared to those of other material classes. Special emphasis is put on present and future cryogenic applications including storage and transportation of hydrogen or liquefied gases. Gas permeation through composites afier mechani-cal and thermal cycling and modifications for a better performance will be *** trends for getting advanced materials will finish the presentation.

关键词： fiber-polymer composite cryogenic property thermal conductivity gas permeation

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environmental Impacts of the Yangtze Three Gorges Project: An Overview of the Chinese-German Research Cooperation

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Journal of earth Science 2010年第6期21卷 817-823页

作者： Günter Subklew Julia Ulrich Leander Fürst Agnes Hltkemeier forschungszentrum Jülich GmbH

The construction of the Three Gorges Dam on the Yangtze River in China has a great influence on the ecosystems involved. In order to investigate these environmental effects in the Yangtze catchment area as well as downstream of the dam, forschungszentrum Julich has organized a research network for the Chinese and Germaa partners. In the research fields of （1） interaction water/ sediment/contaminants, （2） vegetation/biodiversity, （3） changing land use/erosion/mass movements, and （4） atmosphere, the partners have accumulated a great deal of expertise in handling major issues and also in developing models and recommendations for action. The following provides an overview of the research network and the research tasks. On the German side, five projects in research field （3） have been in operation since 2008. The results are reported in contributions by ehret et al., Jaehnig and Cai, Schonbrodt et al., and Seeber et al.. Another five projects in research field （1） have started by September 2010. The research tasks undertaken in these five projects are presented below.

关键词： Three Gorges Dam Yangtze River environmental research ecosystem.

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Quantitative Multi-Layer electromagnetic Induction Inversion and Full-Waveform Inversion of Crosshole Ground Penetrating Radar Data

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Journal of earth Science 2015年第6期26卷 844-850页

作者： Jan van der Kruk Nils Gueting Anja Klotzsche Guowei He Sebastian Rudolph Christian von Hebel Xi Yang Lutz Weihermüller Achim Mester Harry Vereecken Agrosphere (IBG-3) Forschungszentrum Jülich GmbH Centre for High-Performance Scientific Computing in Terrestrial Systems (TerrSys) British Geological Survey Environmenal Science Centre Key Worth electronic Systems (ZeA-2) Forschungszentrum Jülich GmbH

Due to the recent system developments for the electromagnetic characterization of the subsurface, fast and easy acquisition is made feasible due to the fast measurement speed, easy coupling with GPS systems, and the availability of multi-channel electromagnetic induction（eMI） and ground penetrating radar（GPR） systems. Moreover, the increasing computer power enables the use of accurate forward modeling programs in advanced inversion algorithms where no approximations are used and the full information content of the measured data can be exploited. Here, recent developments of large-scale quantitative eMI inversion and full-waveform GPR inversion are discussed that yield higher resolution of quantitative medium properties compared to conventional approaches. In both cases a detailed forward model is used in the inversion procedure that is based on Maxwell＇s equations. The multi-channel eMI data that have different sensing depths for the different source-receiver offset are calibrated using a short electrical resistivity tomography（eRT） calibration line which makes it possible to invert for electrical conductivity changes with depth over large areas. The crosshole GPR full-waveform inversion yields significant higher resolution of the permittivity and conductivity images compared to ray-based inversion results.

关键词： ground penetrating radar electromagnetic induction full-waveform inversion.

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Low soil C:N ratio results in accumulation and leaching of nitrite and nitrate in agricultural soils under heavy rainfall

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Pedosphere 2023年第6期33卷 865-879页

作者： Xiaosong YANG Zhengyi HU Zijian XIe Songyan LI Xiaolei SUN Xianlin Ke Mingming TAO Resource and environmental College University of Chinese Academy of SciencesBeijing 100049China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China National engineering Laboratory for Lake Pollution Control and ecological Restoration Chinese Research Academy of Environmental SciencesBeijing 100012China Institute of Bio-and Geosciences Agrosphere(IBG-3)Forschungszentrum JulichJulich 52425Germany

Nitrate (NO-3) and nitrite (NO2-) leaching threatens groundwater *** C:N ratio,i.e.,the ratio of soil organic carbon to total nitrogen,affects mineralization,nitrification,and denitrification;however,its mechanism for driving soil NO-3and NO-2accumulation and leaching remains ***,a field investigation in a fluvo-aquic soil and a soil column experiment were performed to explore the relationships between soil C:N ratio and soil NO-3and NO-2leaching in three soil layers (0–20,20–40,and 40–60 cm) under heavy rainfall (rainfall rate>25 mm d-1).The field investigation results showed that both soil NO-3-N and NO-2-N contents decreased exponentially (Peasing soil C:N ratio in each soil ***,negative exponential relationships (Pere found between soil C:N ratio and both NO-3-N and NO-2-N concentrations in soil solution in each soil layer under heavy *** soil column divided into three layers was leached with simulated heavy rainfall;the results confirmed negative exponential relationships (Petween soil C:N ratio and both NO-3-N and NO-2-N concentrations in the leachate from each soil layer.A total of 18 soil samples obtained from three depths at six field sites during the rainy season were used to elucidate the microbial mechanisms induced by soil C:N ratio using high-throughput sequencing and real-time polymerase chain *** abundances of ammonifying bacteria (Flavobacterium,Bacillu,and Pseudomonas),ammonia-oxidizing bacteria (Nitrosospira),and nirS/K gene were observed when soil C:N was low,concomitant with low abundances of NO-2-oxidizing bacteria (Nitrospira) and narG *** least squares path modeling showed that the high NO-3and NO-2levels at low soil C:N ratio might be attributed to the inhibition of NO-3reduction (i.e.,low narG gene) and NO-2oxidation (i.e.,low Nitrospira) and thus the accumulation of soil NO-3and NO-2,***,the leaching of NO-2and NO-3in low C:N so

关键词： ammonia-oxidizing bacteria ammonifying bacteria functional gene microbial community nitrite-oxidizing bacteria

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High ionic conductive protection layer on Zn metal anode for enhanced aqueous zinc-ion batteries

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Chinese Chemical Letters 2023年第6期34卷 563-566页

作者： Xianyu Liu Qiongqiong Lu Aikai Yang Yitai Qian School of Chemical engineering Lanzhou City UniversityLanzhou 730070China Leibniz Institute for Solid State and Materials Research(IFW)Dresden e.V. Helmholtzstraβe 2001069 DresdenGermany Materials Synthesis and Processing(IeK-1) Institute of Energy and Climate ResearchForschungszentrum Jülich GmbH52425JülichGermany Hefei National Laboratory for Physical Science at the Microscale Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China

Aqueous zinc-ion batteries(ZIBs)has been regarded as a promising energy storage system for large-scale application due to the advantages of low cost and high ***,the growth of Zn dendrite,hydrogen evolution and passivation issues induce the poor electrochemical performance of ***,a Na_(3)Zr_(2)Si_(2)PO_(12)(NZSP)protection layer with high ionic conductivity of 2.94 m S/cm on Zn metal anode was fabricated by drop casting *** protection layer prevents Zn dendrites formation,hydrogen evolution as well as passivation,and facilitates a fast Zn~(2+)*** a result,the symmetric cells based on NZSP-coated Zn show a stable cycling over 1360 h at 0.5 m A/cm^(2)with 0.5 m Ah/cm^(2) and 1000 h even at a high current density of 5 m A/cm^(2) with 2 m Ah/cm^(2).Moreover,the full cells combined with V_(2)O_(5)-based cathode displays high capacities and high rate *** work offers a facile and effective approach to stabilizing Zn metal anode for enhanced ZIBs.

关键词： Na_(3)Zr_(2)Si_(2)PO_(12) High ionic conductivity Drop casting Surface coating Zinc metal anode Aqueous zinc-ion batteries

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Investigation of charge carrier depletion in freestanding nanowires by a multi-probe scanning tunneling microscope

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Nano Research 2018年第11期11卷 5924-5934页

作者： Andreas Nagelein Matthias Steidl Stefan Korte Bert Voigtlande Wemer Prost Peter Kleinschmidt Thomas Hannappel Technische Universitat Ilmenau Institut for Physik 98693 llmenau Germany Peter Grunberg Institut (PGI-3 ) Forschungszentrum.julich 52425 Julich Germany JARA-Fundamentals of Future Information Technology Forschungszentrum Julich 52425 Julich Germany University of Duisburg-essen Solid State Electronics Department 47057 Duisburg Germany

Profiling of the electrical properties of nanowires (NWs) and NW heterocontacts with high spatial resolution is a challenge for any application and advanced NW device development. For appropriate NW analysis, we have established a four-point prober, which is combined in vacuo with a state-of-the-art vapor-liquid-solid preparation, enabling contamination-free NW characterization with high spatial resolution. With this ultrahigh-vacuum-based multi-tip scanning tunneling microscopy (MT-STM), we obtained the resistance and doping profiles of freestanding NWs, along with surface-sensitive information. Our in-system 4-probe STM approach decreased the detection limit for low dopant concentrations to the depleted case in upright standing NWs, while increasing the spatial resolution and considering radial depletion regions, which may originate from surface changes. Accordingly, the surface potential of oxide-free GaAs NW {112} facets has been estimated to be lower than 20 mV, indicating a NW surface with very low surface state density.

关键词： multi-tip scanning tunneling microscopy (MT-STM) electrical characterization nanowires charge carrier depletion oxidation

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