检索结果-南通市图书馆

Towards seamless environmental prediction-development of Pan-Eurasian EXperiment(PEEX)modelling platform

在线全文

学校读者我要写书评

暂无评论

Big Earth Data 2024年第2期8卷 189-230页

作者： Alexander mahura Alexander Baklanov Risto makkonen michael Boy Tuukka Petäjä Hanna KLappalainen Roman Nuterman Veli-matti Kerminen Stephen R.Arnold markus Jochum anatoly Shvidenko Igor Esau mikhail Sofiev Andreas Stohl Tuula Aalto Jianhui Bai Chuchu Chen Yafang Cheng Oxana Drofa mei Huang Leena Järvi Harri Kokkola Rostislav Kouznetsov Tingting Li Piero malguzzi Sarah monks mads Bruun Poulsen Steffen m.Noe Yuliia Palamarchuk Benjamin Foreback Petri Clusiu Till Andreas Soya Rasmussen Jun She Jens Havskov Sørensen Dominick Spracklen Hang Su Juha Tonttila Siwen Wang Jiandong Wang Tobias Wolf-Grosse Yongqiang Yu Qing Zhang Wei Zhang Wen Zhang Xunhua Zheng Siqi Li Yong Li Putian Zhou markku Kulmala Faculty of Science Institute for Atmospheric and Earth System Research(INAR)/PhysicsUniversity of Helsinki(UHEL)HelsinkiFinland Science and Innovation Department World Meteorological Organization(WMO)GenevaSwitzerland Niels Bohr Institute University of CopenhagenCopenhagenDenmark Climate System Research Finnish Meteorological Institute(CSR-FMI)HelsinkiFinland School of Engineering Sciences Lappeenranta University of TechnologyLappeenrantaFinland Institute for Climate and Atmospheric Science School of Earth and EnvironmentUniversity of LeedsLeedsUK Biodiversity and Natural Resources Program International Institute for Applied Systems Analysis(IIASA)LaxenburgAustria Department of Physics and Technology UiT-The Arctic University of NorwayTromsoNorway Nansen Environmental and Remote Sensing Center(NERSC) BergenNorway Atmospheric Composition Finnish Meteorological Institute(AC-FMI)HelsinkiFinland Norwegian Institute for Air Research(NILU) KjellerNorway LAGEO Institute of Atmospheric PhysicsChinese Academy of Sciences(IAP-CAS)BeijingChina max Planck Institute for Chemistry(mPI-Chem) MainzGermany Institute of Atmospheric Sciences and Climate National Research Council of Italy(CNR-15SAC)BolognaItaly Institute of Geographic Sciences and Natural Resources Research(IGSNRR) Chinese Academy of Sciences(CAS)BeijingChina Faculty of Science Helsinki Institute of Sustainability Science(HELSUS)University of Helsinki(UHEL)HelsinkiFinland Atmospheric Research Centre of Eastern Finland Finnish Meteorological Institute(ARCEF-FMI)KuopioFinland Institute of Atmospheric Physics Chinese Academy of Sciences(IAP-CAS)BeijingChina Department of Plant Physiology Estonian University of Life Sciences(EULS)Institute of Agricultural and Environmental Sciences(IAES)TartuEstonia Danish meteorological Institute(DmI) CopenhagenDenmark State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry LAPC) Institute of Atmospheric Physics(IAP)Chinese Academy of Sciences(CAS)BeijingChina Uni

The Pan-Eurasian Experiment modelling Platform(PEEX-mP)is one of the key blocks of the PEEX Research *** PEEX mP has more than 30 models and is directed towards seamless envir-onmental *** main focus area is the Arctic-boreal regions and *** models used in PEEX-mP cover several main components of the Earth’s system,such as the atmosphere,hydrosphere,pedosphere and biosphere,and resolve the physicalchemicalbiological processes at different spatial and temporal scales and *** paper introduces and discusses PEEX mP multi-scale modelling concept for the Earth system,online integrated,forward/inverse,and socioeconomical modelling,and other approaches with a particular focus on applications in the PEEX geographical *** employed high-performance com-puting facilities,capabilities,and PEEX dataflow for modelling results are *** virtual research platforms(PEEXView,Virtual Research Environment,Web-based Atlas)for handling PEEX modelling and observational results are *** over-all approach allows us to understand better physical-chemicalbiological processes,Earth’s system interactions and feedbacks and to provide valuable information for assessment studies on evaluating risks,impact,consequences,*** population,envir-onment and climate in the PEEX *** work was also one of the last projects of *** Zilitinkevich,who passed away on 15 February *** the finalization took time,the paper was actually submitted in 2023 and we could not argue that the final paper text was agreed with him.

关键词： multi-scale and-processes modelling concept seamless coupling high-performance computing data infrastructure virtual research platforms

Impact of drilling waste pollution on land cover in a high subarctic forest-tundra zone

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2022年第3期32卷 414-425页

作者： anatoly OPEKUNOV marina OPEKUNOVA Stepan KUKUSHKIN Sergey LISENKOV Institute of Earth Sciences St.Petersburg State UniversitySt.Petersburg 199178(Russia)

Global climate changes can lead to the destruction of the permafrost zone and contribute to the active transfer of pollutants to natural *** can be especially pronounced in the areas of oil and gas production in the *** study aimed to define the landscape components(i.e.,groundwater,soil water,soil,and indicator plant species)of chemical pollution with metals,oil hydrocarbons,and polycyclic aromatic hydrocarbons,from the discharge of drill *** at two sites in the forest-tundra zone of Western Siberia(Russia)were carried out within two years of *** migration was found in peaty-gley heavy loamy soils and iron-illuvial clayey podburs,but lateral migration of different pollutants did not exceed 200 ***,radial migration was practically absent owing to the high buffering capacity of the soil organic horizon and the upward flow of matter in the seasonal melt *** main indicators of drilling waste pollution were high concentrations of Sr,Ba,petroleum hydrocarbons,and Cl^(-)*** the waste disposal sites,the concentration of Ba and Sr in the soil water were 1150 and 1410μg L^(-1),respectively;in groundwater,they reached 721 and 2360μg L^(-1),*** the soil,Ba and Sr accumulated in the peaty horizon(798 and 706 mg kg^(-1),respectively).The concentration of Cl^(-)ions in the soil water at the site of waste discharge was 1912 mg L^(-1),and at a distance of 200 m,it decreased to 77.4 mg L^(-1).The Cl^(-)concentration in the groundwater was lower,and at a distance of 200 m,it was 38.9 mg L^(-1).The highest concentration of petroleum hydrocarbons in the surface layer was found in the peaty-gley soils(up to 2400 mg kg^(-1)).In glandular-illuvial podburs,it was 420 mg kg^(-1).In horizons BH and BC,it was close to the background values(27 and 33 mg kg^(-1),respectively).Alkalinization of soils and water under the influence of drill cuttings led to the death of oligotrophic and acidophilic vegetation at a distanc

关键词： metal petroleum hydrocarbons plant indicator species pollutant migration in soil polycyclic aromatic hydrocarbon

GFAP expression in the optic nerve and increased Н2S generation in the integration centers of the rainbow trout（Oncorhynchus mykiss） brain after unilateral eye injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2020年第10期15卷 1867-1886页

作者： Evgeniya V.Pushchina anatoly A.Varaksin Dmitry K.Obukhov Igor m.Prudnikov A.V.Zhirmunsky National Scientific Center of marine Biology Far Eastern BranchRussian Academy of SciencesVladivostokRussia A.A.Bogomoletz Institute of Physiology National Academy of Sciences of UkraineKievUkraine St.Petersburg State University St.PetersburgRussia

Hydrogen sulfide(H2S)is considered as a protective factor against cardiovascular ***,there are few reports on the effects of H2S in the central nervous system during stress or *** studies on goldfish have shown that astrocytic response occurs in the damaged and contralateral optic *** fibrillary acidic protein(GFAP)concentration in the optic nerves of rainbow trout has not been measured *** study further characterized the astrocytic response in the optic nerve and the brain of a rainbow trout(Oncorhynchus mykiss)after unilateral eye injury and estimated the amount of H2S-producing enzyme cystathionineβ-synthase(CBS)in the brain of the rainbow *** 1 week after unilateral eye injury,a protein band corresponding to a molecular weight of 50 kDa was identified in the ipsi-and contralateral optic nerves of the rainbow *** concentration of GFAP in the injured optic nerve increased compared to the protein concentration on the contralateral *** results of a quantitative analysis of GFAP+cell distribution in the contralateral optic nerve showed the largest number of GFAP+cells and fibers in the optic nerve *** the damaged optic nerve,patterns of GFAP+cell migration and large GFAP+bipolar activated astrocytes were detected at 1 week after unilateral eye *** study of H2S-producing system after unilateral eye injury in the rainbow trout was conducted using enzyme-linked immunosorbent assay,western blot analysis,and immunohistochemistry of polyclonal antibodies again st CBS in the integrative centers of the brain:telencephalon,optic tectum,and ***-linked immunosorbent assay results showed a 1.7-fold increase in CBS expression in the rainbow trout brain at 1 week after unilateral eye injury compared with that in intact *** the ventricular and subventricular regions of the rainbow trout telencephalon,CBS+radial glia and neuroepithelial cells were *** unilateral eye injury

关键词： astrocyte-like cells glial fibrillary acidic protein hydrogen sulfide neuroepithelial cells neuroprotection radial glial cells rainbow trout(Oncorhynchus mykiss) reactive oxygen species unilateral eye injury

Coupled large earthquakes in the Baikal rift system: Response to bifurcations in nonlinear resonance hysteresis

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2013年第6期4卷 709-716页

作者： anatoly V.Klyuchevskii Rem G.Khlebopros Institute of the Earth’s Crust Siberian Branch of the Russian Academy of Sciences128 ul.LermontovIrkutsk 664033Russia Siberian Federal University 79Svobodny ave.Krasnoyarsk 660041Russia Institute of Biophysics Krasnoyarsk Science CenterSiberian Branch of the Russian Academy of Sciences50/50 AkademgorodokKrasnoyarsk 660036Russia

The current lithospheric geodynamics and tectonophysics in the Baikal rift are discussed in terms of a nonlinear oscillator with *** nonlinear oscillator model is applicable to the area because stress change shows up as quasi-periodic inharmonic oscillations at rifting attractor structures （RAS）.The model is consistent with the space-time patterns of regional seismicity in which coupled large earthquakes,proximal in time but distant in space,may be a response to bifurcations in nonlinear resonance hysteresis in a system of three oscillators corresponding to the rifting *** space-time distribution of coupled mLH ＞ 5.5 events has been stable for the period of instrumental seismicity,with the largest events occurring in pairs,one shortly after another,on two ends of the rift system and with couples of smaller events in the central part of the *** event couples appear as peaks of earthquake ‘migration＇ rate with an approximately decadal *** the energy accumulated at RAS is released in coupled large events by the mechanism of nonlinear oscillators with *** new knowledge,with special focus on space-time rifting attractors and bifurcations in a system of nonlinear resonance hysteresis,may be of theoretical and practical value for earthquake prediction *** of the results into the nearest future indicates the probability of such a bifurcation in the region,i.e.,there is growing risk of a pending m ≈ 7 coupled event to happen within a few years.

关键词： Nonlinear geodynamics Nonlinear oscillator with dissipation Phase portrait Bifurcation Hysteresis Coupled large earthquakes Baikal rift system

Considering temperature dependence of thermo-physical properties of sandy soils in two scenarios of oil pollution

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2014年第4期6卷 302-308页

作者： Aleksey V.malyshev anatoly m.Timofeev Institute of Physical-Technical Problems of the North. V.P. Larionov Siberian Branch of the Russian Academy of Sciences

We analyzed the heat conductivity and volumetric heat capacity of sandy soil contaminated in two scenarios of oil pollution, and also determined the temperature dependencies of these changed thermophysical properties. In the first pollution scenario, the oil product was introduced into wet river sand, and in the second case, dry sand was contaminated by the oil product and was then moistened with water. By considering these two scenarios as multicomponent dispersion systems with varying degrees of contamination and humidity, and by using a polystructural granular model with pore spaces and closed inclusions, we calculated that the heat conductivity of the sandy soil increased under the first pollution scenario and decreased under the second, but the change in the volumetric heat capacity of the sandy soil was proportional only to the amount of oil pollution, not the manner in which it was introduced. We also determined the temperature dependencies of these two thermophysical properties of sandy soil when polluted by oil, of which information will be useful for future containment and remediation of oil-contaminated soil.

关键词： sandy soil heat conductivity heat capacity heat resistance pollution oil product unfrozen water volumeconcentration coordination number

Variability of emission lines in the optical spectra of the Herbig Be binary system HD 200775

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2019年第3期19卷 31-34页

作者： Anastasia P.Bisyarina ANDrey m.Sobolev Stanislav Yu.Gorda anatoly S.miroshnichenko Astronomical Observatory of the Ural Federal University Department of Physics and Astronomy University of North Carolina at Greensboro main (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences Fesenkov Astrophysical Institute

In our previous papers we have improved the value of the orbital period of the binary Herbig Be star HD 200775 and showed that the [O I] and Si II 6347 and 6371 ?A emission lines displayed variations which correlate with the orbital period. In this paper we provide evidences that other broad emission lines of metals in the spectra of HD 200775 also exhibit variability, which is probably related to the orbital cycle of the binary. Analysis was performed based on the high-resolution spectral data collected over a time span of 6 years at the Kourovka Astronomical Observatory of the Ural Federal University(Russia) and the Three College Observatory of the University of North Carolina at Greensboro(USA) as well as archival spectral data compiled since 1994. We report new data points in the radial velocity curve of the He I 5876 ?A line near the extremal values of the radial velocity.

关键词： techniques spectroscopic-stars variables T Tauri,Herbig Ae/Be-stars individual HD 200775

Strain-Rate Dependency of a Unidirectional Filament Wound Composite under Compression

在线全文

学校读者我要写书评

暂无评论

Computer modeling in Engineering & Sciences 2023年第12期137卷 2149-2161页

作者： Stepan Konev Victor A.Eremeyev Hamid m.Sedighi Leonid Igumnov anatoly Bragov Aleksandr Konstantinov Ayaulym Kuanyshova Ivan Sergeichev Skolkovo Institute of Science and Technologies Center for Materials TechnologiesMoscowRussia National Research Lobachevsky State University of Nizhny Novgorod Nizhny NovgorodRussia Dipartimento di Ingegneria Civile Ambientale e Architettura(DICAAR)Universitàdegli Studi di CagliariCagliari(CA)Italy mechanical Engineering Department Faculty of EngineeringShahid Chamran University of AhvazAhvazIran Drilling Center of Excellence and Research Center Shahid Chamran University of AhvazAhvazIran

This article presents the results of experimental studies concerning the dynamic deformation and failure of a unidirectional carbon fiber reinforced plastic(T700/LY113)under *** test samples were manufactured through the filament winding of flat *** establish the strain rate dependencies of the strength and elastic modulus of the material,dynamic tests were carried out using a drop tower,the Split Hopkinson Pressure Bar method,and standard static *** samples were loaded both along and perpendicular to the direction of the reinforcing *** applicability of the obtained samples for static and dynamic tests was confirmed through finite elementmodeling and the high-speed imaging of the deformation and failure of samples during *** a result of the conducted experimental studies,static and dynamic stress-strain curves,time dependencies of deformation and the stress and strain rates of the samples during compression were *** on these results,the strain rate dependencies of the strength and elasticity modulus in the strain rate range of 0.001-6001/s are *** is shown that the strain rate significantly affects the strength and deformation characteristics of the unidirectional carbon fiber composites under *** increase in the strain rate by 5 orders of magnitude increased the strength and elastic modulus along the fiber direction by 42%and 50%,*** loading resulted in a strength and elastic modulus increase by 58%and 50%,*** average strength along the fibers at the largest studied strain rate was about *** obtained results can be used to design structural elements made of polymer composite materials operating under dynamic shock loads,as well as to build models of mechanical behavior and failure criteria of such materials,taking into account the strain rate effects.

关键词： High strain rate composites filament winding dynamic strength Split Hopkinson Pressure Bar compression

All-optical switching in silicon photonic waveguides with an epsilon-near-zero resonant cavity [Invited]

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2018年第5期6卷 I0026-I0030页

作者： ANDRES D.NEIRA GREGORY A.WURTZ anatoly V.ZAYATS Department of Physics King's College London

Strong nonlinearity of plasmonic metamaterials can be designed near their effective plasma frequency in the epsilon-near-zero(ENZ) regime. We explore the realization of an all-optical modulator based on the Au nonlinearity using an ENZ cavity formed by a few Au nanorods inside a Si photonic waveguide. The resulting modulator has robust performance with a modulation depth of about 30 dB/μm and loss less than 0.8 dB for switching energies below 600 fJ. The modulator provides a double advantage of high mode transmission and strong nonlinearity enhancement in the few-nanorod-based design.

关键词： All-optical switching silicon photonic waveguides an epsilon-near-zero resonant cavity

Individual stages of bacterial dichloromethane degradation mapped by carbon and chlorine stable isotope analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第4期31卷 147-160页

作者： maria L.Torgonskaya anatoly m.Zyakun Yuri A.Trotsenko Kestutis S.Laurinavichius Steffen Kümmel Stéphane Vuilleumier Hans H.Richnow Laboratory of Radioactive Isotopes G.K.Skryabin Institute of Biochemistry and Physiology of MicroorganismsFRC Pushchino Center for Biological ResearchRussian Academy of Sciences Laboratory of mass Spectrometry G.K.Skryabin Institute of Biochemistry and Physiology of MicroorganismsFRC Pushchino Center for Biological ResearchRussian Academy of Sciences Department of Isotope Biogeochemistry Helmholtz Centre for Environmental Research-UFZ Université de Strasbourg CNRS

The fractionation of carbon and chlorine stable isotopes of dichloromethane(CH_2Cl_2,DCm)upon dechlorination by cells of the aerobic methylotroph methylobacterium extorquens Dm4 and by purified DCm dehalogenases of the glutathione S-transferase family was *** effects for individual steps of the multi-stage DCm degradation process,including transfer across the cell wall from the aqueous medium to the cell cytoplasm,dehalogenase binding,and catalytic reaction,were *** observed carbon and chlorine isotope fractionation accompanying DCm consumption by cell supensions and enzymes was mainly determined by the breaking of C\Cl bonds,and not by inflow of DCm into *** isotope effects of DCm dehalogenation were initially masked in high density cultures,presumably due to inverse isotope effects of non-specific DCm oxidation under conditions of oxygen *** cofactor supply remarkably affected the correlation of variations of DCm carbon and chlorine stable isotopes(Δδ^(13)C/Δδ^(37)Cl),increasing corresponding ratio from 7.2–8.6 to 9.6–10.5 under conditions of glutathione *** suggests that enzymatic reaction of DCm with glutathione thiolate may involve stepwise breaking and making of bonds with the carbon atom of DCm,unlike the uncatalyzed reaction,which is a one-stage process,as shown by quantum-chemical modeling.

关键词： Dichloromethane(DCm) microbial degradation Aerobic methylotrophic bacteria Dichloromethane dehalogenase Carbon and chlorine isotopic fractionation