Since the discovery of cosmic acceleration, modified gravity theories play an important role in the modern cosmology. In particular, the well-known F(R)-theories reached great popularity motivated by the easier formalism ...

One of the greatest challenges in cosmology today is to determine the nature of dark energy, the sourse of the observed present acceleration of the Universe. Besides the vacuum energy, various dark energy models have ...

It is shown that the Einstein gravity + Higgs scalar field have cosmological regular solutions with deceleration/acceleration phases and with bouncing off from a singularity. The behavior of the solution near to a flex point ...

The distribution law was found for several varieties (for example, equipments failure time). Data analysis was done for VVR-c reactor emergency shutdown. Two different approaches was presented for distribution functions ...

We conjecture that many (maybe all) integrable systems and spin systems in 2+1 di-mensions can be obtained from the (2+1)-dimensional Gauss-Mainardi-Codazzi and Gauss-Weingarten equations, respectively. We also show that ...

At present, there exists a commonly accepted idea that the irradiation of austenitic chrome–nickel steels by neutrons under conditions of a nuclear reactor almost unavoidably leads to an irreversible reduction in their ...

We report plane wave basis density functional theory (DFT) calculations of the oxygen vacancies formation energy in nanocrystalline CeO2-x in comparison with corresponding results for bulk and (111) CeO2 surface. Effects ...

Ultrasonic testing was conducted on two long, Type 304 stainless steel blocks with a hexagonal cross-section that were removed from the reflector region of the decommissioned EBR-II reactor. One block had a dose range ...

The deep interrelation between many partial differential equations (PDE) of the classical differential geometry (DG) of surfaces and modern soliton equations is well established now [2-8]. Generally speaking, the interaction ...