Е. Н. Курочкин, S. V. Saveliev, Andrey Postnov, Е. М. Первушов, Evgeny Popov,
Tópico(s): Ichthyology and Marine Biology
2006 - Pleiades Publishing | Paleontological Journal
Daria S. Khramova, Fedor Vityazev, Nikita Yu. Saveliev, Andrey Burkov, Vladislav S. Beloserov, Ekaterina A. Martinson, Sergey G. Litvinets, Sergey V. Popov,
The rheological characteristics and transit time of gastric digesta and the postprandial glycaemic response in mice orally administered with water (control) or pectin solutions supplemented (AP-Ca) or not supplemented (AP) with CaCO3 were elucidated. AP and AP-Ca increased viscosity, storage and loss moduluses (G' and G'') of mice gastric digesta. The gelling capacity of AP-Ca in acidic gastric conditions appeared to provide a greater enhancement of gastric digesta viscosity compared with AP. The postprandial ...
Tópico(s): Digestive system and related health
2018 - Elsevier BV | Carbohydrate Polymers
Andrey Saveliev, Luca Maccione, G. Sigl,
Motivated by experimental indications of a significant presence of heavy nuclei in the cosmic ray flux at ultra high energies (≳1019 eV), we consider the effects of Planck scale suppressed Lorentz Invariance Violation (LIV) on the propagation of cosmic ray nuclei. In particular we focus on LIV effects on the photodisintegration of nuclei onto the background radiation fields. After a general discussion of the behavior of the relevant quantities, we apply our formalism to a simplified model where the ...
Tópico(s): Cosmology and Gravitation Theories
2011 - Institute of Physics | Journal of Cosmology and Astroparticle Physics
Andrey Saveliev, Karsten Jedamzik, G. Sigl,
We present a derivation of the time evolution equations for the energy content of nonhelical magnetic fields and the accompanying turbulent flows from first principles of incompressible magnetohydrodynamics in the general framework of homogeneous and isotropic turbulence. This is then applied to the early Universe, i.e., the evolution of primordial magnetic fields. Numerically integrating the equations, we find that most of the energy is concentrated at an integral wavenumber scale ${k}_{I}$ where ...
Tópico(s): Geophysics and Gravity Measurements
2012 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology
Andrey Saveliev, Karsten Jedamzik, G. Sigl,
We extend our recent derivation of the time evolution equations for the energy content of magnetic fields and turbulent motions for incompressible, homogeneous, and isotropic turbulence to include the case of nonvanishing helicity. These equations are subsequently numerically integrated in order to predict the present day primordial magnetic field strength and correlation length, depending on its initial helicity and magnetic energy density. We find that all prior analytic predictions for helical ...
Tópico(s): Astrophysics and Cosmic Phenomena
2013 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology
Rafael Alves Batista, Andrey Saveliev, G. Sigl, Tanmay Vachaspati,
We determine the effect of intergalactic magnetic fields on the distribution of high energy gamma rays by performing three-dimensional Monte Carlo simulations of the development of gamma-ray-induced electromagnetic cascades in the magnetized intergalactic medium. We employ the so-called 'Large Sphere Observer' method to efficiently simulate blazar gamma ray halos. We study magnetic fields with a Batchelor spectrum and with maximal left- and right-handed helicities. We also consider the case of sources ...
Tópico(s): Dark Matter and Cosmic Phenomena
2016 - American Physical Society | Physical review. D/Physical review. D.
Karsten Jedamzik, Andrey Saveliev,
Primordial magnetic fields (PMFs), being present before the epoch of cosmic recombination, induce small-scale baryonic density fluctuations. These inhomogeneities lead to an inhomogeneous recombination process that alters the peaks and heights of the large-scale anisotropies of the cosmic microwave background (CMB) radiation. Utilizing numerical compressible MHD calculations and a Monte Carlo Markov chain analysis, which compares calculated CMB anisotropies with those observed by the WMAP and Planck ...
Tópico(s): Dark Matter and Cosmic Phenomena
2019 - American Physical Society | Physical Review Letters
Produção Nacional
Revisado por pares
Rafael Alves Batista, Andrey Saveliev, E. M. de Gouveia Dal Pino,
Relativistic jets from blazars are known to be sources of very-high-energy gamma rays (VHEGRs). During their propagation in the intergalactic space, VHEGRs interact with pervasive cosmological photon fields such as the extragalactic background light (EBL) and the cosmic microwave background (CMB), producing electron-positron pairs. These pairs can upscatter CMB/EBL photons to high energies via inverse Compton scattering, thereby continuing the cascade process. This is often used to set limits on intergalactic ...
Tópico(s): Dark Matter and Cosmic Phenomena
2019 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Rafael Alves Batista, Andrey Saveliev,
The origin of magnetic fields in the universe is an open problem. Seed magnetic fields possibly produced in early times may have survived up to the present day close to their original form, providing an untapped window to the primeval universe. The recent observations of high-energy neutrinos from the blazar TXS 0506+056 in association with an electromagnetic counterpart in a broad range of wavelengths can be used to probe intergalactic magnetic fields via the time delay between the neutrinos and ...
Tópico(s): Neutrino Physics Research
2020 - IOP Publishing | The Astrophysical Journal Letters
Rafael Alves Batista, Andrey Saveliev,
One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or cosmic rays in the intergalactic space. Because the charged component of the cascade is sensitive to magnetic fields, gamma-ray observations of distant objects such as blazars can be used to constrain IGMF properties. Ground-based and space-borne gamma-ray telescopes deliver spectral, temporal, and angular information of high- ...
Tópico(s): Dark Matter and Cosmic Phenomena
2021 - Multidisciplinary Digital Publishing Institute | Universe
Rafael Alves Batista, J. Becker Tjus, Julien Dörner, A. Dundovic, Björn Eichmann, Antonius Frie, Christopher Heiter, Mario R. Hoerbe, K.‐H. Kampert, Lukas Merten, Gero Müller, Patrick Reichherzer, Andrey Saveliev, Leander Schlegel, G. Sigl, A. van Vliet, T. Winchen,
Abstract The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, largely due to the inflow of data collected by large-scale cosmic-ray, gamma-ray, and neutrino observatories. At the dawn of the multimessenger era, the interpretation of these observations within a consistent framework is important to elucidate the open questions in this field. CRPropa 3.2 is a Monte Carlo code for simulating the propagation of high-energy particles in the Universe. This version represents ...
Tópico(s): Radio Astronomy Observations and Technology
2022 - Institute of Physics | Journal of Cosmology and Astroparticle Physics
Б. Н. Четверушкин, N. d’Ascenzo, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Material Science and Thermodynamics
2017 - Pleiades Publishing | Doklady Mathematics
Б. Н. Четверушкин, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Economic and Technological Systems Analysis
2018 - Pleiades Publishing | Computational Mathematics and Mathematical Physics
Б. Н. Четверушкин, N. d’Ascenzo, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Gas Dynamics and Kinetic Theory
2017 - Pleiades Publishing | Mathematical Models and Computer Simulations
Petar Pavlović, Andrey Saveliev, Marko Sossich,
The consequences of the vacuum polarization effect in magnetic fields around a Schwarzschild black hole on the motion of charged particles are investigated in this work. Using the weak electromagnetic field approximation, we discuss the nonminimal coupling between magnetic fields and gravity caused by the vacuum polarization and study the equations of motion for the case of a magnetic field configuration which asymptotically approaches a dipole magnetic field. It is shown that the presence of nonminimal ...
Tópico(s): Astrophysics and Cosmic Phenomena
2019 - American Physical Society | Physical review. D/Physical review. D.
Produção Nacional
Revisado por pares
Rafael Alves Batista, Andrey Saveliev,
The origin of the first magnetic fields in the Universe is a standing problem in cosmology. Intergalactic magnetic fields (IGMFs) may be an untapped window to the primeval Universe, providing further constrains on magnetogenesis. We demonstrate the feasibility of using ultra-high-energy cosmic rays (UHECRs) to constrain the helicity of IGMFs by performing simulations of cosmic-ray propagation in simple magnetic field configurations. We show that the first harmonic moments of the arrival distribution ...
Tópico(s): Dark Matter and Cosmic Phenomena
2019 - Institute of Physics | Journal of Cosmology and Astroparticle Physics
Vinh Nguyen, Anton Saveliev, Andrey Ronzhin,
A robotic manipulator mounted on unmanned aerial vehicle (UAV) is called an aerial manipulation system usually. Any movements of manipulator affect the stability of the UAV. In particular, the horizontal shift of the center of mass (COM) requires of the UAV the powerful controller that change forces of the propellers of quadrotor to bring the UAV to a stable state. To make manipulations by UAV it is important to save the center of mass of the aerial manipulation system in stable state. In this study, ...
Tópico(s): Control and Dynamics of Mobile Robots
2020 - Springer Science+Business Media | Lecture notes in computer science
Andrey Saveliev, Rafael Alves Batista,
The recent observation of high-energy neutrinos from the 2017 flare of the blazar TXS~0506+056, together with counterparts across the whole electromagnetic spectrum, opens up new possibilities for investigating the properties of this class of objects as well as the traversed medium. Propagation effects such as the attenuation of the very-high-energy gamma-ray component by the extragalactic background light are well known, and usually taken into account when fitting spectral energy distributions ...
Tópico(s): Gamma-ray bursts and supernovae
2020 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Fedor Vityazev, Daria S. Khramova, Nikita Yu. Saveliev, Е. А. Ипатова, Andrey Burkov, Vladislav S. Beloserov, В. А. Белый, L. O. Kononov, Ekaterina A. Martinson, Sergey G. Litvinets, Pavel А. Markov, Sergey V. Popov,
Tópico(s): Hydrogels: synthesis, properties, applications
2020 - Elsevier BV | Carbohydrate Polymers
Б. Н. Четверушкин, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Marine and environmental studies
2019 - Pleiades Publishing | Computational Mathematics and Mathematical Physics
Б. Н. Четверушкин, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Aquatic and Environmental Studies
2019 - Pleiades Publishing | Doklady Mathematics
Б. Н. Четверушкин, N. d’Ascenzo, Andrey Saveliev, V. I. Saveliev,
Tópico(s): Peatlands and Wetlands Ecology
2018 - Pleiades Publishing | Computational Mathematics and Mathematical Physics
Anatoly A. Saveliev, Andrey V. Romanov, Svetlana Mukharamova,
This paper describes application of multilevel B-Splines approximation (MBA) algorithm to the SIC2004 exercise as a high performance automatic mapping means in emergency situations.MBA method was compared with kriging, and various flexible MBA method's tuning "controls" were proposed and discussed.Outliers automatic detection and delineation techniques considered could be used to process outliers without the loss in performance.Prior data were used to adjust method parameters and discover the pattern ...
Tópico(s): Satellite Image Processing and Photogrammetry
2005 - Monash University | Applied GIS
Anton Saveliev, Andrey Ronzhin,
Tópico(s): Video Analysis and Summarization
2015 - Pleiades Publishing | Pattern Recognition and Image Analysis
Andrey Ronzhin, Anton Saveliev, Oleg Basov, Sergey Solyonyj,
In this paper, we propose a conceptual model of a cyberphysical environment based on a new approach to distribution of sensor, network, computing, information-control and service tasks between mobile robots, embedded devices, mobile client devices, stationary service equipment, and cloud computing and information resources. The task of structural-parametric synthesis of the corresponding cyberphysical system is formalized. Methods of integer-valued programming are used for the task solution.
Tópico(s): Engineering Education and Technology
2016 - Springer Science+Business Media | Lecture notes in computer science
Alla Mikheenko, Gleb Valin, Andrey D. Prjibelski, Vladislav Saveliev, Alexey Gurevich,
: Data visualization plays an increasingly important role in NGS data analysis. With advances in both sequencing and computational technologies, it has become a new bottleneck in genomics studies. Indeed, evaluation of de novo genome assemblies is one of the areas that can benefit from the visualization. However, even though multiple quality assessment methods are now available, existing visualization tools are hardly suitable for this purpose. Here, we present Icarus-a novel genome visualizer for accurate ...
Tópico(s): Chromosomal and Genetic Variations
2016 - Oxford University Press | Bioinformatics
Alla Mikheenko, Andrey D. Prjibelski, Vladislav Saveliev, Dmitry Antipov, Alexey Gurevich,
The emergence of high-throughput sequencing technologies revolutionized genomics in early 2000s. The next revolution came with the era of long-read sequencing. These technological advances along with novel computational approaches became the next step towards the automatic pipelines capable to assemble nearly complete mammalian-size genomes.In this manuscript, we demonstrate performance of the state-of-the-art genome assembly software on six eukaryotic datasets sequenced using different technologies. ...
Tópico(s): Algorithms and Data Compression
2018 - Oxford University Press | Bioinformatics
Andrey Saveliev, Mikhail Mikhailovich Zhileikin, V A Mikhailovskaya, Mikhail Doudkin, Alina Kim, Marek Młyńczak, Gennady Vladimirovich Kustarev, V. V. Grib,
The quality and depth of content Web of Science offers to researchers, authors, publishers, and institutions sets it apart from other research databases. The inclusion of News of NAS RK. Series of geology and technical sciences in the Emerging Sources Citation Index demonstrates our dedication to providing the most relevant and influential content of geology and engineering sciences to our community.Қазақстан Республикасы Ұлттық ғылым академиясы "ҚР ҰҒА Хабарлары.Геология және техникалық ғылымдар ...
Tópico(s): Tunneling and Rock Mechanics
2019 - | NEWS of National Academy of Sciences of the Republic of Kazakhstan
Б. Н. Четверушкин, Andrey Saveliev, V. I. Saveliev,
The first ideas concerning the principle of operation of non-mechanical magneto-hydrodynamic pumping systems were originally created at the end of the 1960s during studies of efficient heat exchange systems in nuclear energy sources using liquid metals as coolant. Currently, these ideas are of increasing interest in the creation of many critical technologies that require precise flow control in distributed energy transfer systems, in particular for a new generation of environmentally friendly efficient ...
Tópico(s): Nuclear Engineering Thermal-Hydraulics
2022 - Elsevier BV | Computers & Fluids
Anatoly A. Saveliev, Andrey V. Romanov, Svetlana Mukharamova,
This paper describes application of multilevel B-Splines approximation (MBA) algorithm to the SIC2004 exercise as a high performance automatic mapping means in emergency situations. MBA method was compared with kriging, and various flexible MBA methods tuning controls were proposed and discussed. Outliers automatic detection and delineation techniques considered could be used to process outliers without the loss in performance. Prior data were used to adjust method parameters and discover the pattern ...
Tópico(s): Multidisciplinary Science and Engineering Research
2005 - Monash University | Applied GIS