S. A. Isaev
A5017630273- Fluid Dynamics and Turbulent Flows
- Heat Transfer Mechanisms
- Fluid Dynamics and Vibration Analysis
- Computational Fluid Dynamics and Aerodynamics
- Nuclear Physics and Applications
- Heat transfer and supercritical fluids
- Heat Transfer and Optimization
- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Nuclear reactor physics and engineering
- Particle Dynamics in Fluid Flows
- Nanofluid Flow and Heat Transfer
- Nuclear physics research studies
- Plasma and Flow Control in Aerodynamics
- Aerodynamics and Acoustics in Jet Flows
- Radiation Detection and Scintillator Technologies
- Turbomachinery Performance and Optimization
- Aquatic and Environmental Studies
- Astro and Planetary Science
- Atomic and Subatomic Physics Research
- Cyclone Separators and Fluid Dynamics
- Radiative Heat Transfer Studies
- Geotechnical and Geomechanical Engineering
- Gas Dynamics and Kinetic Theory
- Lattice Boltzmann Simulation Studies
Medical University of Vienna
2025
Saint Petersburg State University of Civil Aviation
2015-2024
State Marine Technical University of St. Petersburg
2019-2024
St Petersburg University
2005-2023
Perm State University
2023
California Maritime Academy
2023
Joint Institute for High Temperatures
2022
Northwestern Polytechnical University
2022
Kazan State Technical University named after A. N. Tupolev
2007-2020
Samara University
2019
In the present study, we conducted a conjugate heat transfer (CHT) analysis for double-wall cooling with impingement and effusion, incorporating various types of ribs, using Reynolds-averaged Navier–Stokes (RANS) method modified shear stress transport (SST) turbulence closure model (SST-KIC), accounting Kato-Launder modification (K), intermittency (I), crossflow (C) transition effects. We comprehensively discussed impact slit type (parallel, inclined, convergent, divergent), open-area ratio...
A high-resolution measurement of the neutron-induced fission cross section $^{234}\mathrm{U}$ and $^{237}\mathrm{Np}$ has been performed at CERN Neutron Time-of-Flight facility. The sections have determined in a wide energy range from 1 eV to GeV using evaluated $^{235}\mathrm{U}$ as reference. In these measurements determination for resonances could be improved, whereas previous discrepancies were confirmed. New cross-section data are provided high neutron energies that go beyond limits...
The cross section of the reaction $^{197}\mathrm{Au}$($n,\ensuremath{\gamma}$) was measured with time-of-flight technique at n_TOF (neutron time-of-flight) facility in unresolved resonance region between 5 and 400 keV using a pair ${\mathrm{C}}_{6}$D${}_{6}$ (where D denotes $^{2}\mathrm{H}$) liquid scintillators for detection prompt capture $\ensuremath{\gamma}$ rays. results total uncertainty $3.9%--6.7$$%$ resolution 20 bins per energy decade show fair agreement Evaluated Nuclear Data...
We have measured the neutron capture cross sections of stable magnesium isotopes ${}^{24,25,26}$Mg in energy range interest to $s$ process using time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and samples enriched ${}^{25}$Mg ${}^{26}$Mg were recorded total method based on C${}_{6}$${}^{2}$H${}_{6}$ detectors. Neutron resonance parameters extracted by simultaneous shape analysis present data existing transmission isotopic sample. Maxwellian-averaged for...
Spermatozoid’s flagella assemble in transcriptionally silent spermatids and thus depends on post-transcriptional regulation of gene expression. Mutations Nsun7 are known to cause male infertility human mice. We identified m5C-specific RNA methyltransferase as a protein present elongated interacting with RNAs specific for this type spermatozoid’s precursor cells. Inactivation mice leads upregulation its interactors, indicating that downregulates set the spermatids. A physiologic consequence...
The151Sm(n,gamma)152Sm cross section has been measured at the spallation neutron facility n_TOF CERN in energy range from 1 eV to MeV. The new combines excellent resolution time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting rather favorable signal/background ratios. 151Sm is of importance for characterizing capture nucleosynthesis asymptotic giant branch stars. At a thermal kT=30 keV Maxwellian averaged this unstable isotope (t(1/2)=93 yr) was...
The neutron capture cross section of $^{209}\mathrm{Bi}$ has been measured at the CERN n_TOF facility by employing pulse-height-weighting technique. Improvements over previous measurements are mainly because an optimized detection system, which led to a practically negligible sensitivity. Additional experimental sources systematic error, such as electronic threshold in detectors, summing \ensuremath{\gamma}-rays, internal electron conversion, and isomeric state bismuth, have taken into...
Neutron resonance analyses have been performed for the capture cross sections of $^{186}\mathrm{Os}$, $^{187}\mathrm{Os}$, and $^{188}\mathrm{Os}$ measured at n_TOF facility cern. Resonance parameters extracted up to 5, 3, 8 keV, respectively, using sammy code a full $R$-matrix fit yields. From these results average were derived by statistical analysis provide comprehensive experimental basis modeling stellar neutron rates isotopes in terms Hauser-Feshbach model. Consistent calculations...
Neutron-induced fission cross sections for ${}^{\text{nat}}$Pb and $^{209}\mathrm{Bi}$ were measured with a white-spectrum neutron source at the CERN Neutron Time-of-Flight (n_TOF) facility. The experiment, using neutrons from threshold up to 1 GeV, provides first results these nuclei above 200 MeV. relative $^{235}\mathrm{U}$ $^{238}\mathrm{U}$ in dedicated chamber parallel plate avalanche counter detectors. Results are compared previous experimental data. Upgraded parametrizations of...