A5029629163- Gamma-ray bursts and supernovae
- SAS software applications and methods
- Arctic and Antarctic ice dynamics
- Icing and De-icing Technologies
- Climate change and permafrost
- Smart Materials for Construction
- Cryospheric studies and observations
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Structural Integrity and Reliability Analysis
- Offshore Engineering and Technologies
- Arctic and Russian Policy Studies
- Winter Sports Injuries and Performance
- Methane Hydrates and Related Phenomena
- Material Properties and Failure Mechanisms
- Ocean Acidification Effects and Responses
- Astronomy and Astrophysical Research
- Fluid Dynamics Simulations and Interactions
- Wave and Wind Energy Systems
- Innovations in Concrete and Construction Materials
- Pulsars and Gravitational Waves Research
- Geophysics and Sensor Technology
Peter the Great St. Petersburg Polytechnic University
2014-2024
Volgograd State Agricultural University
2020-2023
Universidad de Cádiz
2014-2016
Academy of Sciences Republic of Uzbekistan
2010-2011
Ulugh Beg Astronomical Institute
2006-2010
Nordic Optical Telescope
2007
Lomonosov Moscow State University
2006
We have gathered optical photometry data from the literature on a large sample of Swift-era gamma-ray burst (GRB) afterglows including GRBs up to September 2009, for total 76 GRBs, and present an additional three pre-Swift not included in earlier sample. Furthermore, we publish 840 new points 42 GRB afterglows, sets 050319, 050408, 050802, 050820A, 050922C, 060418, 080413A 080810. analyzed light curves all derived spectral energy distributions with best quality, allowing us estimate host...
The optical afterglow spectrum of GRB050401 (at z=2.8992+/-0.0004) shows the presence a DLA, with log(nHI)=22.6+/-0.3. This is highest column density ever observed in and about five times larger than strongest DLA detected so far any QSO spectrum. From spectrum, we also find very large Zn density, allowing us to infer an abundance [Zn/H]=-1.0+/-0.4. These columns are supported by X-ray from Swift-XRT which (in excess Galactic) log(nH)=22.21^{+0.06}_{-0.08} assuming solar abundances z=2.9)....
The article provides an overview of the historical and contemporary developments in estimating ice loads on marine structures. It first underscores significance accurate load calculations for safety reliability structures, subsequently traces evolution estimation techniques from past standards to current international guidelines. then delves into limitations traditional methods estimation, which rely heavily empirical data, before discussing innovative more precise discrete element method...
Mitigating ice adhesion on offshore and port structures is crucial for ensuring their safety operational efficiency in cold climates. Ice adhesion, the molecular attraction between a surface, can lead to increased structural loads, reduced stability, restricted functionality. This work provides an overview of different concepts, including nature its consequences structures, effective strategies minimize it. The include surface coatings, roughness modifications, heating systems, de-icing...
The blazar 3C 454.3 underwent an unprecedented optical outburst in spring 2005. This was first followed by a mm and then cm radio outburst, which peaked February 2006. We report on follow-up observations the WEBT to study multiwavelength emission post-outburst phase. XMM-Newton July December 2006 added information X-ray UV fluxes. source faint state. flux at higher frequencies showed fast decreasing trend, represents tail of big outburst. It quiescent state, common all frequencies. In...
Article contain an overview of development ice loads estimation on offshore structures. It begins by discussing the importance calculating for safety and reliability structures; then explores evolution load calculation in norms from past to present, including international standards guidelines advancements techniques. The article further delves into methods used before modern standards, highlighting their limitations reliance empirical data. discusses significant step forward estimation,...
Freezing into ice is a complex phenomenon that presents challenges and risks in both individual construction contexts. Work provides concise overview of the key aspects surrounding freezing ice. It highlights dangers. For construction, lie compromised structural integrity, limited stability, access difficulties. Calculating involves considering temperature, material properties, time, formation, expert consultation. Different types are identified, process shown to be influenced by type ice,...
Ice reinforcement plays a vital role in enhancing the strength, stability, and load-bearing capacity of ice surfaces various environments. This scientific exploration delves into different facets reinforcement, encompassing main methodologies employed, consequential increase drawbacks associated with reinforced ice, cost implications, process removing when melts. By analyzing these aspects, we aim to develop comprehensive understanding methods, their efficacy, limitations, multifaceted...
The development of the regions Far North is currently most important task for extraction mineral resources. However, when conducting offshore drilling in Arctic seas, selection appropriate hydraulic structures crucial. Factors such as severe natural and climatic conditions, remoteness from developed areas, presence permafrost soils necessitate specific considerations. This paper examines limitations advantages different exploration Arctic. It concluded that artificial island structures,...
Nowadays a lot of projects are being constructed in the Arctic regions with ice cover.Ports, offshore platforms, satellite stations, lighthouses, and other scientific environmental constructions often located such areas due to economic reasons.Ice loads important for structure calculation.A number possible actions from can exist.Ice vitally important; however, there some gaps knowledge methods.One factors be taken into account is freezing developing collars around structure.This factor leads...
Aims: With this paper we want to investigate the highly variable afterglow light curve and environment of gamma-ray burst (GRB) 060526 at $z=3.221$. Methods: We present one largest photometric datasets ever obtained for a GRB afterglow, consisting multi-color data from ultraviolet near infrared. The set contains 412 points in total which add additional literature. Furthermore, low-resolution high signal-to-noise spectra afterglow. is modeled with both an analytical model using broken power...
The Russian Federation has a large number of seas with access to the world ocean. logical use this fact is development maritime transport infra-structure as one cheapest per unit weight transported cargo. It also worth noting that in some northern remote regions, there are still no alternatives seasonal sea delivery. In recent decades, Russia planned construction and reconstruction ports, including along Northern Sea Route (NSR). From open sources it known near main way on are: Murmansk,...
The Arctic, a region of ecological and climatic significance, is undergoing unprecedented ice changes due to climate change. This transformation, marked by rapid reductions in sea extent, thickness, the persistence multi-year ice, has far-reaching consequences for ecosystems, biodiversity, global patterns. article examines historical perspective Arctic's dynamics, revealing oncestable environment now throes current state Arctic analyzed, emphasizing alarming observed through satellite...
Ice loads is one of the most important parameters which should be taken into consideration for arctic structures. load highly depends on ice thickness. It always recommended to consider thickness data from field observations. However if not available it necessary calculate thicknesses level. Calculation also areas where thermal fluxes through structure consideration. In this work numerical simulation Stefan problem determining level presented. The results show good correlation between...
The Arctic Sea Route, also known as the Northern is experiencing profound changes due to effects of climate change. This transformation opening up new economic opportunities and geopolitical challenges, all while raising significant environmental concerns. diminishing sea ice, thinning ice cover, development routes have reduced shipping distances, making this once largely impassable region increasingly accessible for global commerce. Economic implications include expanded trade...
<i>Context. <i/>The detection of bright optical emission measured with good temporal resolution during the prompt phase GRB 060111Bmakes this a rare event that is especially useful for constraining theories emission. <i>Aims. <i/>For reason an extended multi-wavelength campaign was performed to further constrain physical interpretation observations. <i>Methods. <i/>In work, we present results obtained from our campaign, as well public Swift/BAT, XRT, and UVOT data.<i>Results. <i/>We...
Arctic engineering projects pose unique challenges due to severe cold conditions and the presence of ice. Among critical factors affecting offshore constructions in these regions, ice loads stand out as a primary concern. Accurate estimation is essential ensure safe cost-effective operation marine structures icy environments. One specific formation that significantly influences total design load on collar. Ice collars are thicker thermodeveloped formations occur around with high thermal...
In the domain of hydrotechnical structures, novel methods are emerging to increase ice thickness, notably in context islands. The layer-by-layer freezing process serves as a cornerstone, where time determines efficacy. article explores diverse techniques, their stages, and implications. Layer-by-layer entails water pouring, followed by after each layer. Augmentations involve introducing rubble inclined plane freezing. Sprinkling accelerates through droplet adhesion. block method uses...
Arctic development is one of the priorities for country. For this, it necessary both to develop new normative documentation on standardization and improve existing norms standards. The region complex in terms weather environmental conditions. Environmental loads actions hydraulic structures are most important primarily include impacts from ice. Ice can be a very different nature therefore not fully reflected documents. formation an ice collar types freezing submerged structures. thicker...
This article discusses the possibilities of grape growing and wine production industry in Volgograd region development to increase tourist attractiveness region. The describes soil climate, historical, agricultural technological social economic prerequisites for this branch. It was suggested use cluster approach, joining efforts growers producers, as well scientific educational, hospitability enterprises rendering recreation services local residents, Russian foreign guests city within...