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Effects of urbanization on heavy metal accumulation in surface soils, Beijing

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Journal of Environmental Sciences 2018年第2期30卷 328-334页

作者： Meie Wang Rui Liu Weiping Chen Chi Peng bernd markert State Key Laboratory of Urban and Regional Ecology Research Centre for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Environmental Institute of Scientific Networks 49733 Haren Germany

Urbanization processes affect the accumulation of heavy metals in urban soils. Effects of urbanization on heavy metal accumulation in soils were studied using Beijing as an example. It has been suggested that the ecological function of vegetation covers shifting from natural to agricultural settings and then to urban greenbelts could increase the zinc（Zn） concentrations of soils successively. The Zn concentration of urban soils was significantly correlated to the percentage of the impervious land surface at the500 m × 500 m spatial scale. For urban parks, the age or years since the development accounted for 80% of the variances of cadmium（Cd） and Zn in soils. The population density,however, did not affect the heavy metal distributions in urban soils. To conclude, the urban age turned out to be a notable factor in quantifying heavy metal accumulation in urban soils.

关键词： Urban soils Human disturbance Zn Impervious land Population density

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环境质量评价中的生物指示与生物监测

生态学报 2013年第1期33卷 33-44页

作者： bernd markert 王美娥 Simone Wünschmann 陈卫平 Environmental Institute of Scientific Networks (EISN-Institute) Fliederweg 17 D-49733 Haren Germany 城市与区域生态国家重点实验室中国科学院生态环境研究中心北京100085

通过比较生物指示与生物监测技术和仪器分析技术的分析过程及原理,结合北京市土壤中土壤脲酶与土壤重金属含量之间的相关关系的案例,及生物指示与生物监测技术在水生生态系统及大气污染研究中的应用状况,系统阐述了生物指示与生物监测... 详细信息

通过比较生物指示与生物监测技术和仪器分析技术的分析过程及原理,结合北京市土壤中土壤脲酶与土壤重金属含量之间的相关关系的案例,及生物指示与生物监测技术在水生生态系统及大气污染研究中的应用状况,系统阐述了生物指示与生物监测技术研究的发展历程、研究前沿及发展方向。指出定量校正及不同学科与地区的科学团队的合作是生物指示与生物监测技术研究中需要克服的关键问题,并提出生物指示与生物监测技术研究的目标是整合不同学科的研究方向,为人类健康与环境安全的保护与预测提供技术支持。

关键词：生物指示与生物监测环境污染学科整合人体健康与环境安全

A Tropical View on Landau-Ginzburg Models

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Acta Mathematica Sinica,English Series 2024年第1期40卷 329-382页

作者： Michael CARL Max PUMPERLA bernd SIEBERT Alfred-Delp-Str.2 73430 AalenGermany IU Internationale Hochschule Juri-Gagarin-Ring 15299084 ErfurtGermany AnyscaleInc.2080 Addison St Ste 7BerkeleyCA 94704USA Department of Mathematics The Univ.of Texas at Austin2515 SpeedwayAustinTX 78712USA

This paper,largely written in 2009/2010,fits Landau-Ginzburg models into the mirror symmetry program pursued by the last author jointly with Mark Gross since *** point of view transparently brings in tropical disks of Maslov index 2 via the notion of broken lines,previously introduced in two dimensions by Mark Gross in his study of mirror symmetry for P2.A ma jor insight is the equivalence of properness of the Landau-Ginzburg potential with smoothness of the anticanonical divisor on the mirror *** obtain proper superpotentials which agree on an open part with those classically known for toric *** include mirror LG models for non-singular and singular del Pezzo surfaces,Hirzebruch surfaces and some Fano threefolds.

关键词： Landau-Ginzburg model mirror symmetry tropical disk broken line wall structure scattering diagram Gross-Siebert program del Pezzo surface toric degeneration

Next-to-leading-order relativistic and QCD corrections to prompt J/ψpair photoproduction at future e^(+)e^(−)colliders

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Chinese Physics C 2024年第8期48卷 104-112页

作者： Zhi-Guo He Xiao-Bo Jin bernd A.Kniehl Rong Li Department of Physics and Electronics School of Mathematics and PhysicsBeijing University of Chemical TechnologyBeijing 100029China II.Institut für Theoretische Physik Universität HamburgLuruper Chaussee 14922761 HamburgGermany Institut für Theoretische Physik Universität Regensburg93040 RegensburgGermany Center of Advanced Quantum Studies Department of PhysicsBeijing Normal UniversityBeijing 100875China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi’an Jiaotong UniversityXi’an 710049China Institute of Theoretical Physics Xi’an Jiaotong UniversityXi’an 710049China

Within the framework of nonrelativistic-QCD factorization,we calculate both the next-to-leading-order relativistic and QCD corrections to prompt J/ψpair production,with feed-down fromψ(2S)mesons,via photon-photon collisions at future e^(+)e^(−)colliders,including the Future Circular Lepton Collider(FCC-ee),the Circular Electron Positron Collider(CEPC),and the Compact Linear Collider(CLIC).We present total cross sections and distributions in single J/ψtransverse momentum and rapidity,as well as in J/ψpair invariant *** relativistic and QCD corrections both turn out to be large and ***,the production rates are large enough for useful experimental studies.

关键词： heavy quarkonium perturbative calculation two-photon collisions

Prospective cohort study on facial profile changes in infants with Robin sequence and healthy controls

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World Journal of Pediatrics 2024年第6期20卷 581-589页

作者： Cornelia Wiechers Julian Sowula Karen Kreutzer Christoph E.Schwarz Christina Weismann Michael Krimmel Christian F.Poets bernd Koos Department of Neonatology Tuebingen University HospitalCalwerstrasse 772076 TuebingenGermany Center for Cleft Lip Palate and Craniofacial MalformationsTuebingen University HospitalTuebingenGermany Department of Orthodontics Tuebingen University HospitalTuebingenGermany Department of Oral and Maxillofacial Surgery Tuebingen University HospitalTuebingenGermany

Background Various conservative and surgical approaches exist to treat Robin sequence(RS),but their effects on facial profile and mandibular catch-up growth are unclear.A functional treatment concept,used in our centre for 25 years,includes an individualized palatal plate with a velo-pharyngeal extension and intensive feeding *** We performed a prospective study to objectively describe facial profiles in infants with RS treated with the above *** with isolated RS were admitted to our tertiary perinatal and national referral centre for craniofacial malformations between May 2018 and Nov *** with RS received 3D-photographs during clinically indicated *** controls were recruited from Dec 2018 to Sep 2019 and received 3D-photographs every 3 *** digitally measured jaw index(JI),defined as alveolar overjet(O)x maxillary arch(U)/mandibular arch(L),and the soft tissue reference points A’-point,Nasion’,B’-point angle(ANB’),describing the relative position of maxilla to mandible,were *** mixed models were used to examine time trajectories in JI and ANB’.Results A total of 2073D images,obtained in 19 infants with RS and 32 controls,were *** and ANB’decreased over time in both groups[for JI−0.18(95%CI−0.25 to−0.10);for ANB’:−0.40°per month[(95%CI−0.48 to−0.32)]]but remained lower in controls[for JI−2.5(95%CI−3.2 to−1.8);for ANB’-1.7°(95%CI−2.4 to−1.0)].Also,the ANB’model showed a significant effect of the interaction term diagnosis x *** Based on longitudinal 3D images,we describe changes in objective parameters of facial profile in infants with and without RS during the first year of *** findings indicate catch-up growth in infants treated for RS.

关键词： Infant Mandibular catch-up growth Pre-epiglottic Baton Plate Robin sequence Three-dimensional photography

Removal of endocrine disrupting chemicals from water through urethane functionalization of microfiltration membranes via electron beam irradiation

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 61-74页

作者： Zahra Niavarani Daniel Breite Muhammad Yasir Vladimir Sedlarik Andrea Prager Nadja Schönherr bernd Abel Roger Gläser Agnes Schulze Leibniz Institute of Surface Engineering eV.(IOM) Permoserstrasse 1504318 LeipzigGermany Centre of Polymer Systems University InstituteTomas Bata University in ZlinTrida Tomase Bati 567876001 ZlinCzech Republic Institute of Chemical Technology Leipzig UniversityLinnestrasse 304103 LeipzigGermany

Polyethersulphone(PES)membranes modified with urethane functional groups were prepared through an interfacial reaction using electron beam *** removal of eight endocrine disrupting chemicals(EDCs)was studied using both pristine and functionalized PES *** prepared membranes underwent characterization using several techniques,including attenuated total reflectance-Fourier transform infrared(ATR-FTIR)spectroscopy,scanning electron microscopy,contact angle analysis,and measurements of pure water ***,dynamic adsorption experiments were conducted to evaluate the adsorption mechanism of the prepared membrane toward the eight *** urethane functionalized membranes were hydrophilic(52°contact angle)and maintained a high permeate flux(26000 L/h m^(2) bar)throughout the filtration *** adsorption results demonstrated that the introduction of urethane functional groups on the membranes significantly enhanced the removal efficiency of 17β-estradiol,estriol,bisphenol A,estrone,ethinylestradiol,and *** adsorption loading of 17β-estradiol on the functionalized PES membrane was 6.7±0.7 mg/m^(2),exhibiting a 5-fold increase compared to the unmodified PES *** membranes were successfully regenerated and reused for three adsorption cycles without experiencing any loss of adsorption capacity.

关键词： Surface functionalization Electron beam irradiation Microfiltration Endocrine disrupting chemicals

汞同位素对W-Sn多金属矿床中金属来源的制约

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中国科学:地球科学 2024年第11期 3501-3512页

作者：田振东 bernd LEHMANN 邓昌州张兴春罗安波陈应华尹润生中国科学院地球化学研究所矿床地球化学国家重点实验室 Mineral Resources Technical University of Clausthal 昆明理工大学国土资源工程学院

花岗岩有关的钨锡矿床经常伴随有同时代的铅锌矿化.目前学术界关于该成矿系统中金属的来源尚存在较大争议.汞（Hg）是该成矿系统中常见的伴生组分,它的非质量分馏(表示为Δ199Hg)主要与地球表生环境下的光化学还原反应有关,不受岩浆和... 详细信息

花岗岩有关的钨锡矿床经常伴随有同时代的铅锌矿化.目前学术界关于该成矿系统中金属的来源尚存在较大争议.汞（Hg）是该成矿系统中常见的伴生组分,它的非质量分馏(表示为Δ199Hg)主要与地球表生环境下的光化学还原反应有关,不受岩浆和热液过程的影响,为示踪岩浆热液体系中成矿金属的来源提供了契机.本文对中国华南地区8个大型-超大型W-Sn多金属矿床开展了汞同位素研究,发现黑钨矿（-0.10‰～0.08‰, n=11）、矽卡岩型钨锡矿石（-0.17‰～0.12‰, n=48）和云英岩型钨锡矿石（-0.12～0.10‰, n=11）均具有近零的Δ199Hg组成,与该地区发育的同时代高分异花岗岩（-0.13‰～0.12‰, n=49）具有一致的同位素组成,表明W-Sn矿石中的Hg主要来自成矿的高分异花岗岩.然而,这些矿床中的硫化物（如黄铁矿、黄铜矿、毒砂、方铅矿和闪锌矿）具有大的Δ199Hg变化范围,从-0.42‰变化至0.09‰,指示硫化物中的Hg、Pb和Zn等成矿金属来自区内前寒武系基底岩石(Δ199Hg<0)和花岗岩的混合.该项研究表明,多种来源的金属参与了花岗岩有关W-Sn多金属成矿系统的演化过程,热液流体从基底岩石中萃取和活化Pb、Zn等成矿物质可能对该成矿系统中贱金属硫化物的成矿起到了关键作用.

关键词：钨锡矿床汞同位素金属来源金属分带华南

A Sub-element Adaptive Shock Capturing Approach for Discontinuous Galerkin Methods

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Communications on Applied Mathematics and Computation 2023年第2期5卷 679-721页

作者： Johannes markert Gregor Gassner Stefanie Walch Department for Mathematics and Computer Science University of CologneWeyertal 86-9050931 CologneGermany Department for Mathematics and Computer Science Center for Data and Simulation ScienceUniversity of CologneWeyertal 86-9050931 CologneGermany I.Physikalisches Institut Center for Data and Simulation ScienceUniversity of CologneZülpicher Str.7750937 CologneGermany

In this paper,a new strategy for a sub-element-based shock capturing for discontinuous Galerkin(DG)approximations is *** idea is to interpret a DG element as a col-lection of data and construct a hierarchy of low-to-high-order discretizations on this set of data,including a first-order finite volume scheme up to the full-order DG *** dif-ferent DG discretizations are then blended according to sub-element troubled cell indicators,resulting in a final discretization that adaptively blends from low to high order within a single DG *** goal is to retain as much high-order accuracy as possible,even in simula-tions with very strong shocks,as,e.g.,presented in the Sedov *** framework retains the locality of the standard DG scheme and is hence well suited for a combination with adaptive mesh refinement and parallel *** numerical tests demonstrate the sub-element adaptive behavior of the new shock capturing approach and its high accuracy.

关键词： High-order methods Discontinuous Galerkin spectral element method Finite volume method Shock capturing Astrophysics Stellar physics

Primary carbohydrate metabolism genes participate in heat-stress memory at the shoot apical meristem of Arabidopsis thaliana

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Molecular Plant 2024年第4期17卷 676-676页

作者： Justyna Jadwiga Olas Federico Apelt Maria Grazia Annunziata Sheeba John Sarah Isabel Richard Saurabh Gupta Friedrich Kragler Salma Balazadeh bernd Mueller-Roeber 不详

(Molecular Plant 14,1508-1524,September 62021)After the original publication of the above article,attentive readers identified errors in Figure 4H that needed correction as *** 4H contained the erroneous labels“10 DAP(7 DAT),”which should have each read,“7 DAP(4 DAT).”To avoid any confusion and ensure consistency across our figures,we modified some of the Col-0 images in a corrected version of Figure 4H below to resemble the exact same Col-0 images as in Figure *** details of the changes are as follows:rotation(Col-0 Primed,all timepoints;Col-0 Triggered,3 DAP and 5 DAP;Col-0 Primed/triggered,3 DAP and 5 DAP),replacement(Col-0 Triggered,7 DAP),and different cropping(Col-0 Primed/triggered,7 DAP).

关键词： Figure metabolism Prime