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Erosion processes in karst landscapes of the Russian plain northern taiga,based on digital elevation modeling

Journal of mountain Science 2016年第4期13卷 569-580页

作者： Elena POLYAKOVA mikhail GOFAROV Yuriy KUTINOV Vladimir BELJAEV Zinaida CHISTOVA Nikolay NEVEROV Vadim STARITSYN Alexandr mINEEV sergey DURYNIN Institute of Ecological Problems of the North Ural Branch of Russian Academy of SciencesGeological Structure and Dynamics of the Lithosphere Laboratory Space monitoring of the Arctic Centre of the Northern Arctic Federal University namedafter m.V.Lomonosov Arkhangelsk163000Russia Institute of Ecological Problems of the North Ural Branch of Russian Academy of SciencesMolecular Ecology and Biogeography LaboratoryArkhangelsk163000Russia Institute of Ecological Problems of the North Ural Branch of Russian Academy of SciencesGeological Structure and Dynamics of the Lithosphere LaboratoryArkhangelsk163000Russia

This paper considers the problems of the potential development of erosion processes in the natural landscapes of northern taiga in the Russian plain. It is considered that in forest ecosystems, erosion processes are slow and are weakly reflected in the terrain. However, the situation changes radically if the vegetation cover integrity is violated, which is inevitable with the modern methods of developing northern territories. Furthermore, global changes in average annual temperatures and the occurrence of karst processes may be the reason behind the development of erosion processes. The authors suggest a method for determining territories with a varying occurrence probability of erosional processes, based on digital elevation modelling. The territory of the Pinezhsky Nature Reserve(Arkhangelsk region) was chosen as the test plot. Direct field studies were previously used to detect exogenous geological processes in this territory. The authors were the first to suggest digital elevation modelling as a method that allows determining the potential danger of erosion in karst landscapes of the northern taiga. The geomorphometric studies resulted in the determination of areas with the greatest and lowest occurrence probability of erosion processes in the Pinezhsky Nature Reserve. It was established that the most significant erosion type was linear erosion, represented by incised river valleys and karst ravines. Sheet erosion is less significant and occurs as sinkholes, local declines, and chasms over the valleys of subterranean rivers.

关键词： Russian plain Erosion processes Karst Northern taiga Digital elevation model Geomorphometric parameters

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Investigation of mechanism and Kinetics of magnesium Oxide Chlorination Based on the ＂method of Separated Reagents＂

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材料科学与工程（中英文A版） 2012年第3期2卷 367-371页

作者： sergey m. Lupinos Dmitriy V. Prutskov State Titanium Research and Design Institute 180 Lenin av. Zaporozhye 69035 Ukraine

For express analysis of mechanism and kinetics of heterogeneous processes involving the interaction of two or more solid reagents, the "method of separated reagents" has been developed. Based on this method a process of magnesite (magnesium oxide) chlorination has been analyzed. It was found that the chlorination processes can be conducted with various rates in several stages and maximum rate of the chlorination process can be attained at the initial stage of the solid reductant gasification in the reactor and subsequent using of carbon oxide as oxygen acceptor. The resulting information on the mechanism and kinetics of the chlorination process enabled the upgrading of the process, its intensification and improvement of reactor productivity by 3 times.

关键词：动力学分析氯化过程氧化镁试剂分离机制相互作用消毒过程

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Amiodarone modulation of Intracellular Transport of Calcium Ions in Cardiomyocites

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Pharmacology & Pharmacy 2012年第3期3卷 307-315页

作者： Dina Kondratyeva sergey Afanasiev sergey Popov Roman Batalov Federal State Budgetary Institution Research Institute for Сardiology of Siberian Branch under the Russian Academy of medical Sciences Tomsk Russia Federal State Budgetary Institution Research Institute for Сardiology of Siberian Branch under the Russian Academy of medical Sciences Tomsk Russia.

The influence of amiodarone on intracellular transport of calcium ion in cardiomyocytes of rat was investigated. The experiments were performed on isolated papillary muscles of Wistar rats. Force-frequency dependence (0.7, 1, 2, 3, 4 Hz), extrasystolic and postextrasystolic contractions and post-rest (4-60 s) reactions of rat myocardium after amiodarone treatment (1 μm) were investigated. Decay potentiation coefficient of contraction force was estimated. Results. The analyses of force-frequency dependence has shown that amiodarone prevent the decreasing of the force contraction at increasing of the stimulation frequency. Amiodarone promotes increase of the time constant t1(T50), that indicate the drug promotes acceleration of Са2+ transport inside the SR resulting increase of Са2+ in the places of its release from the sarcoplasmic reticulum (SR). Treatment of papillary muscle with amiodarone decreased amplitude of extrasystolic contractions. As known, postextrasystolic and post-rest reactions of myocardium characterize the SR function. We have found amiodarone increased potentiation of postextrasystolic and post-rest contractions. Preliminary caffeine perfusion of muscles preparations cancelled the amiodarone-induced increasing postextrasystolic and post-rest potentiation. However, potentiation decay coefficient before and after treatment with amiodarone didn’t have difference. Conclusions, amiodarone influences on intracellular calcium ions homeostasis by modulation SR functions related with most likely are stipulated either by activation of Са2+ transport from uptake sites to release sites or by prevent of Са2+ leakage from the SR.

关键词： Amiodarone Sarcoplasmic Reticulum Function Postextrasystolic and Post-Rest Contractions Papillary muscles of Rat

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Atmosphere, ocean and lithosphere interaction as a possible drive of earthquake triggering

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Geodesy and Geodynamics 2020年第6期11卷 442-454页

作者： Victor Volkov Jan mrlina mstislav Dubrov Vladimir Smirnov sergey Golovachev Vaclav Polak Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences MoscowRussian Federation Institute of Geophysics of the Czech Academy of Sciences PrahaCzech Republic Kotel'nikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences FryazinoRussian Federation

The comparison of tiltmeter and strainmeter data in the periods of the strongest earthquakes with tropical cyclone activities in the World Ocean during Januarye April 2014 is *** features of the observed co-seismic tilt and strain processes are consistent with the results obtained for the strongest events during *** time-frequency data analysis and the comparison of the analysis results with the anomalous geomagnetic and ionospheric activity come to an agreement with the observed *** obtained results have allowed the triggering mechanism of seismicity to be *** process begins as spatial and temporal swings of the regions of tropical cyclone origins and the basins of their *** powerful cyclone development accompanies a wide range of earthquake precursory phenomena,including abnormal behavior of ultra-wideband(0.002 m Hz-3 Hz)Earth’s oscillations,which can be recorded at far distances up to 1000-10,000 *** daily dissipation energy of the most powerful tropical cyclone(hurricane,typhoon)is estimated to have same order of magnitude as the energy released by an event of mw 7-9,as well,atmospheric depressions are big enough to trigger a forthcoming strong *** triggering mechanism could be caused by quasi-static and timedependent surface loading that produces vertical tension and shear *** loading affects the seafloor and coastline where they fall close to the adjacent tectonic plate boundaries.

关键词： Tilt and strain Tropical cyclone Earthquake Hurricane

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modulation of Interval–Force Dependence of Rat Papillary muscle at Acute and Course Exposure of Amiodarone

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Pharmacology & Pharmacy 2012年第3期3卷 342-347页

作者： sergey Afanasiev Dina Kondratyeva sergey Popov Roman Batalov Federal State Budgetary Institution Research Institute for Сardiology of Siberian Branch under the Russian Academy of medical Sciences Tomsk Russia.

Change of interval–force dependence of rat papillary muscles at acute and course use of amiodarone was investigated. methods. The experiments were performed on isolated papillary muscles of Wistar rats. The extrasystolic (0,2-1,5 s), postextrasystolic contractions and post-rest (4-60 s) reactions of rat left papillary muscles perfused Krebs-Henseleit solution with amiodarone (1 μm) and papillary muscles of rat treated amiodarone in dose 20 mg/kg/day for 14 days were investigated. Results. It has been found that both acute and course use of amiodarone decreases the amplitude of extrasystolic contraction. At the same time, only acute use of amiodarone leads to additional enhancement of potentialtion of contractile response at extrasystolic impulse and performance of post-rest test. Conclusion was made, that both acute and course use of amiodarone decreases excitability of cardiomyocytes but only at course use this antiarrythmic drug increases effective refractory period of myocardium. Acute exposure of amiodarone is accompanied with change of functional state of cardiomyocyte sarcoplasmatic reticulum.

关键词： Acute and Course Amiodarone Sarcoplasmic Reticulum Function Postextrasystolic and Post-Rest Contractions Papillary muscles of Rat

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Diclofenac sodium aqueous systems at low concentrations: Interconnection between physicochemical properties and action on hydrobionts

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Journal of Environmental Sciences 2020年第2期32卷 177-186页

作者： Irina S.Ryzhkina Yuliya V.Kiseleva Lyaisan I.murtazina Tatyana V.Kuznetsova Erik R.Zainulgabidinov Igor V.Knyazev Andrew m.Petrov sergey E.Kondakov Alexander I.Konovalov Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific CenterRussian Academy of Sciences8 Arbuzov str.Kazan 420088Russia Institute for Problems of Ecology and mineral Wealth Use of Tatarstan Academy of Sciences 28 Daurskaya Str.Kazan 420087Russia Lomonosov moscow State University Chemistry Dept.1/3 Lenin HillsMoscow 119899Russia

Diclofenac sodium(DS) is a widely used nonsteroidal anti-inflammatory drug(NSAIDs).NSAIDs are poorly removed during standard wastewater *** consequences of the presence of NSAIDs in rivers and lakes at 10-11–10-8 mol/L are not yet established;therefore, ecotoxicologists have focused their efforts on studying the effect of lowconcentration NSAIDs on fish and hydrobionts, and also on predicting the potential risks to *** provides some information about the bioeffects of some NSAID solutions in low concentrations but there is no physicochemical explanation for these *** the physicochemical patterns of DS solutions in the low range of concentrations and establishing an interconnection between the solutions’ physicochemical properties and bioeffects can provide a conceptually new and important source of information regarding the unknown effects of *** physicochemical properties and action of DS solutions on Ceriodaphnia affinis cladocerans,Paramecium caudatum infusoria, Chlorella vulgaris unicellular green algae, as well as on the growth of the roots of Triticum vulgare wheat seeds, were studied in the calculated concentration range of 1 × 10-3–1 × 10-18 mol/*** relationship between these phenomena was established using the certified procedures for monitoring the toxicity of natural water and *** was shown for the first time that water solutions of DS are dispersed systems in which the dispersed phase undergoes a rearrangement with dilution, accompanied by changes in its size and properties, which affects the nonmonotonic dependences of the system’s physicochemical properties and could cause nonmonotonic changes in action on hydrobionts in the low concentration range.

关键词： Diclofenac sodium Low concentration Aqueous solutions Physicochemical properties Hydrobionts Toxicity

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Resolution and contrast enhancement of laser-scanning multiphoton microscopy using thulium-doped upconversion nanoparticles

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Nano Research 2019年第12期12卷 2933-2940页

作者： Alexey B.Kostyuk Artem D.Vorotnov Andrey V.Ivanov Arthur B.Volovetskiy Aleksandr V.Kruglov Lyudmila m.Sencha Liuen Liang Evgenii L.Guryev Vladimir A.Vodeneev sergey m.Deyev Yiqing Lu Andrei V.Zvyagin Lobachevsky State University of Nizhny Novgorod Nizhny Novgorod 603950Russia Center of Biomedical Engineering Institute of Molecular MedicineSechenov UniversityMoscow 119991Russia ARC Centre of Excellence"Nanoscale BioPhotonics" Department of Physics and AstronomyMacquarie UniversitySydney 2109Australia Institute ofBioorganic Chemistry Russian Academy of SciencesMoscow 117997Russia

High-contrast optical imagi ng is achievable using phosphoresce nt labels to suppress the short-lived background due to the optical backscatterand autofluoresce ***,the long-lived phosphorescence is generally incompatible with high-speed laser-scan ning imaging ***,we show that upc on versi on nan oparticles of structure NaYF4:Yb co-doped with 8%Tm(8T-UCNP)in combi nation with a commerciallaser-scanning multiphoton microscopy are uniquely suited for labeling biological systems to acquire high-resolution images with the enhancedcon *** comparison with many phosphoresce nt labels,the 8T-UCNP emission lifetime of-15μs affords rapid image ***-order optical nonlinearity of the 8T-UCNP(n=4,as confirmed experimentally and theoretically)afforded pushing the resolution limitattain able with UCNPs to the *** contrast enha nceme nt was achieved by suppressing the backgro und using(i)ban dpassspectral filtering of the narrow emission peak of 8T-UCNP at 455-nm,and(ii)time-gating implemented with a time-correlated single-photon counting system that demonstrated the contrast enhancement of>2.5-fold of polyethyle neimine-coated 8T-UCNPs take n up by huma nbreast adeno carcinoma cells *** a result,discrete 8T-UCNP nan oparticles became clearly observable in the freshly excised splee ntissue of laboratory mice 15-min post in trave nous injectio n of an 8T-UCNP *** dem on strated approach paves the way forhigh-contrast,high-resoluti on,and high-speed multiphot on microscopy in challe nging envir onments of i ntense autofluorescence,exogenous staining,and turbidity,as typically occur in intravital imaging.

关键词： upconversion nanoparticles autofluorescence time-gated imaging scanning microscopy time-correlated single photon counting

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Non-Local and memory Character of Frictional Energy Dissipation on Atomic Scale

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Engineering（科研） 2017年第1期9卷 14-21页

作者： sergey Yu. Krylov Joost W. m. Frenken Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences Moscow Russia Advanced Research Center for Nanolithography Amsterdam The Netherlands

The traditional description of atomic-scale friction, as investigated in Friction force microscopy, in terms of mechanical stick-slip instabilities appears so successful that it obscures the actual mechanisms of frictional energy dissipation. more sophisticated theoretical approach, which takes into account damping explicitly, reveals the existence of some hidden, unexplained problems, like the universal nearly-critical damping and unexpectedly high value of the dissipation rate. In this paper, we combine analysis in the framework of nonequilibrium statistical mechanics with simple atomistic modeling to show that the hidden problems of atomic scale friction find their origin in the nontrivial character of energy dissipation that is non-local and dominated by memory effects, which have not been addressed before in the context of dry, atomic-scale friction.

关键词： Nanotribology Atomic Scale Friction Dissipation Non-Locality memory

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Characterizing and controlling infrared phonon anomaly of bilayer graphene in optical-electrical force nanoscopy

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Light(Science & Applications) 2023年第12期12卷 2700-2710页

作者： Junghoon Jahng Sunho Lee Seong-Gu Hong Chang Jun Lee sergey G.menabde min Seok Jang Dong-Hyun Kim Jangyup Son Eun Seong Lee Hyperspectral Nano-imaging Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea Department of Aerospace Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA multiscale mechanical Properties measurement Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea School of mechanical Engineering Chonnam National UniversityGwangju 61186Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Functional Composite materials Research Center Korea Institute of Science and TechnologyJeonbuk 55324Republic of Korea SKKU Advanced Institute of Nanotechnology Sungkyunkwan UniversitySuwon 16419Republic of Korea Division of Nano&Information Technology KIST SchoolUniversity of Science and TechnologySeoul 02792Republic of Korea

We,for the first time,report the nanoscopic imaging study of anomalous infrared(IR)phonon enhancement of bilayer graphene,originated from the charge imbalance between the top and bottom layers,resulting in the enhancement of E1u mode of bilayer graphene near 0.2 *** modified the multifrequency atomic force microscope platform to combine photo-induced force microscope with electrostatic/Kelvin probe force microscope constituting a novel hybrid nanoscale optical-electrical force imaging *** enables to observe a correlation between the IR response,doping level,and topographic information of the graphene *** the nanoscale spectroscopic image measurements,we demonstrate that the charge imbalance at the graphene interface can be controlled by chemical(doping effect via Redox mechanism)and mechanical(triboelectric effect by the doped cantilever)***,we can also diagnosis the subsurface cracks on the stacked few-layer graphene at nanoscale,by monitoring the strain-induced IR phonon *** approach provides new insights into the development of graphene-based electronic and photonic devices and their potential applications.

关键词： electrical force optical

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Web service for biodiversity estimation using remote sensing data

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International Journal of Digital Earth 2008年第4期1卷 367-376页

作者： mikhail A.Popov Nataliia N.Kussul sergey A.Stankevich Anna A.Kozlova Andrii Yu.Shelestov Oleksii m.Kravchenko mykhailo B.Korbakov Serhiy V.Skakun Scientific Centre for Aerospace Research of the Earth KievUkraine Department of Space Information Technologies and Systems Space Research Institute NASU-NSAUKievUkraine

This paper presents a technique for the assessment and mapping of land biodiversity by using remote sensing *** proposed approach uses a fuzzy model that encapsulates different ecological factors influencing *** imple... 详细信息

关键词： potential biodiversity index remote sensing data product pre-Black Sea region of the Ukraine web service

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