Polarization of Tau Leptons Produced in Quasielastic Neutrino--Nucleon Scattering

A numerical analysis of the polarization vector of tau leptons produced through quasielastic neutrino and antineutrino interactions with free nucleons is given with two models for vector electromagnetic form factors of proton and neutron. The impact of G parity violating axial and vector second-class currents is investigated by applying a simple heuristic model for the induced scalar and tensor form factors.Comment: Thesis of a talk given at the 8th Scientific Conference (SCYSS-04), Dubna, Russia, 2 - 6 Feb 2004. 11 pages, 6 figures; added references, figures and discussion; conclusions unchange

Year-to-year dynamics of trophic links of the main commercial fishes in the Barents Sea as indicating the state of ecosystem

Ecosystem dynamics and optimal long-term harvest in the Barents Sea fisheries. Proceedings of the 11th Russian-Norwegian Symposium. Murmansk, 15-17 August 2005

Digitalisation of state and municipal services, using the federal state information system “Unified Population Register” as an example

The article formulates the prerequisites that prompted state authorities to implement the project of the federal state information system “Unified Population Register” in order to promptly obtain the most complete and reliable information on the citizens of the Russian Federation. The results of an overview of changes for citizens and government agencies from the introduction of a population information system have been presented. The relevance of the project has been analysed and the pros and cons have been considered. The creation of a single population register will simplify interdepartmental cooperation, facilitate the provision of e-services and social assistance to the population, help to combat crime more effectively, and further develop the information society

East and West: global technological confrontation

In recent years the technological rivalry between China and the USA has become increasingly intense as both countries compete for dominance in the following promising technological areas: in the creation of artificial intelligence systems, in the production of equipment for 5G generation communication networks, in quantum computing, in the design and manufacture of electric vehicles and in biotechnology research. As China’s economy grows and its technological capabilities expand, the USA is increasingly concerned about the consequences of China’s rapid technological growth for national security, economic competitiveness and for global dominance of the USA. In response to China’s technological rise, the USA has taken a number of steps to restrict China’s access to “sensitive” technologies and protect its own interests. The result of such actions was a complex and dynamic confrontation that has an impact on the future of the global economy and technological innovation. This article examines a retrospective of the relationship between the two most developed economies of the world; studies the factors that led to the digital confrontation; analyzes the potential impact of digital competition on the global economy and also considers the prospects for further development of China and the USA as technological giants of modernity

East and West: global challenges to achieving carbon neutrality

The aim of the study is to determine the factors of occurrence and reasons for growth of the energy crisis in the context of the transition to carbon and climate neutrality of European Union’s countries, People’s Republic of China. The energy problems that have arisen in the economy on the way to reducing the indicators of anthropogenic impact on climate change and provoked the energy crisis of the 2021 second half and is currently ongoing in the European Union countries and China were analysed. The main objective of the research is to study the mechanism of cross-border carbon regulation aimed at protecting European producers from environmental dumping and designed to reduce the risks of migration of carbon-intensive industries to countries with a less stringent climate policy. The relevance of the research topic is due to the need to identify steps to modernise the energy sector of the economies of countries that are just embarking on the path of carbon neutrality in order to prevent such energy crises. The results of the study can be used in the formation and adaptation of energy transition strategies for all states and subnational associations that have attempted to achieve carbon neutrality. When reviewing and correcting climate initiatives, a strategy to form a reserve of reliable and cost-effective basic generating capacities has been proposed

Theoretical foundations of increasing quality of production

The quality of the products is one of the main factors for increasing the competitiveness of the enterprise in the market. To this end, it is necessary to develop and implement a whole range of measures for lean manufacturing, to form a quality management systemКачество выпускаемой продукции является одним из основных факторов повышения конкурентоспособности предприятия на рынке. С этой целью необходимо разрабатывать и внедрять целый комплекс мероприятий по бережливому производству, формировать систему менеджмента качеств

Surface-dependent osteoblasts response to TiO2 nanotubes of different crystallinity

One of the major challenges of implantology is to design nanoscale modifications of titanium implant surfaces inducing osseointegration. The aim of this study was to investigate the behavior of rat osteoblasts cultured on anodized TiO2 nanotubes of different crystallinity (amorphous and anatase phase) up to 24 days. TiO2 nanotubes were fabricated on VT1–0 titanium foil via a two-step anodization at 20 V using NH4F as an electrolyte. Anatase-phase samples were prepared by heat treatment at 500 °C for 1 h. VT1–0 samples with flat surfaces were used as controls. Primary rat osteoblasts were seeded over experimental surfaces for several incubation times. Scanning electron microscopy (SEM) was used to analyze tested surfaces and cell morphology. Cell adhesion and proliferation were investigated by cell counting. Osteogenic differentiation of cells was evaluated by qPCR of runt-related transcription factor 2 (RUNX2), osteopontin (OPN), integrin binding sialoprotein (IBSP), alkaline phosphatase (ALP) and osteocalcin (OCN). Cell adhesion and proliferation, cell morphology and the expression of osteogenic markers were affected by TiO2 nanotube layered substrates of amorphous and anatase crystallinity. In comparison with flat titanium, along with increased cell adhesion and cell growth a large portion of osteoblasts grown on the both nanostructured surfaces exhibited an osteocyte-like morphology as early as 48 h of culture. Moreover, the expression of all tested osteogenic markers in cells cultured on amorphous and anatase TiO2 nanotubes was upregulated at least at one of the analyzed time points. To summarize, we demonstrated that amorphous and anodized TiO2 layered substrates are highly biocompatible with rat osteoblasts and that the surface modification with about 1500 nm length nanotubes of 35 ± 4 (amorphous phase) and 41 ± 8 nm (anatase phase) in diameter is sufficient to induce their osteogenic differentiation. Such results are significant to the engineering of coating strategies for orthopedic implants aimed to establish a more efficient bone to implant contact and enhance bone repair. © 2020 by the author. Licensee MDPI, Basel, Switzerland.Deutscher Akademischer Austauschdienst, DAADRussian Science Foundation, RSF: 18‐13‐00220Ministry of Education and Science of the Russian Federation, Minobrnauka: 57447934PPN/BEK/2018/1/00071Funding: The experimental work was funded by the Russian Science Foundation (grant no. 18‐13‐00220). This research was partially supported by DAAD together with the Ministry of Education and Science of the Russian Federation within Michael Lomonosov Program (project No. 57447934); M.W. was financially supported by the Polish National Agency for Academic Exchange (PPN/BEK/2018/1/00071)

Identification of the second phases formed in VDM® alloy C-4

The electrochemical extraction of the second phase in the VDM® alloy C-4 alloy has been studied by transmission and scanning microscopy, as well as by X-ray phase analysis. It was found that annealing, which consists in heating up to 850 ℃ with further holding for 32 hours and cooling in a furnace, leads to the precipitation of a second phase in VDM® alloy C-4 alloy. It can lead to embrittlement and a general decrease in the corrosion resistance of the alloy. The precipitation of the anode deposit (the second phase in the samples of the VDM® alloy C-4 alloy after annealing) and its identification was carried out by the methods indicated above. © 2021 Institute of Physics Publishing. All rights reserved