Uzhhorod National University

About: Uzhhorod National University is a education organization based out in Uzhhorod, Ukraine. It is known for research contribution in the topics: Raman spectroscopy & Laser. The organization has 1089 authors who have published 1056 publications receiving 5187 citations. The organization is also known as: State Higher Education Establishment "Uzhhorod National University" & Uzhhorod State University.

Concepts of species and strain in relation to microorganisms under formation of biofilms as superorganismic systems

Abstract: Nowadays, many biological terms receive new interpretations, especially the concept of species. The species is the main structural unit of living things. It emerges, develops, and, when living conditions change either disappear or transforms into other species. There is no clear and unified definition of species. The achievements of contemporary molecular genetic studies indicate that the majority of microorganisms exist mainly not in a free-floating condition, but in formed associations or consortia. Microbial interactions occur by transferring molecular and genetic information, and various mechanisms such as secondary metabolites, siderophores, quorum-sensing system, biofilm formation, and cell transduction signals can be involved in this exchange. Therefore, for a deeper understanding of the concept of "species" in biology, it is necessary to take into account not only morphological and physiological criteria, but also to consider species from the viewpoint of systems biology, and to bear in mind factors of horizontal gene transfer. Therefore, the concept of "species" can be considered in a broader context, in particular within ecosystems with all assimilation relations.

Spectroscopic diagnostics of laser erosion plasma of poly- and monocrystalline CuInS2 targets

Abstract: The emission spectra of laser erosion plasma formed during the action of a periodic pulsed radiation of neodymium laser on poly-and monocrystalline CuInS2 targets have been studied. The absolute and relative contributions of various spectral lines to the total emission spectrum are evaluated. An analysis of the common and distinctive features of the emission spectra of poly-and monocrystalline targets shows that the degree of ordering of the target structure significantly influences the laser-induced processes of atomization and ionization of the ablated material.

The Evolution of Erosion Laser Plasma of Antimony

Abstract: The time dependence of the population of excited states of particles is investigated under conditions of a target of pure antimony being acted upon by pulsed laser radiation (w = (3–5)×108 W/cm2, λg = 1.06 mcm, τ = 20 ns, and f = 12 Hz). The ways are analyzed of increasing the accuracy of measurements of the laser plasma parameters by emission spectroscopy. The evolution of the mechanisms of formation of excited atoms and ions of antimony in the plasma of a laser jet is investigated under conditions of moderate effect of infrared laser radiation on a target in vacuum.

Relationships between the source of health information and the behavior of mothers of children under 5 years old: cross-sectional study analysis.

Abstract: OBJECTIVE The aim: Is to investigate relationships between trusted sources of health information and people's behavior, including their attitudes toward vaccination and their willingness to seek medical care. PATIENTS AND METHODS Materials and methods: The responses of 4,354 mothers of children under 5 years of age from all regions of Ukraine, who participated in the Multi-Indicator Cluster Household Survey (MICS-2012) were analyzed. The respondents were divided into separate groups using two-step cluster analysis. RESULTS Results: 6 clusters of respondents were identified, depending on the trusted source of health information identified by them, including those who trust only physicians (50.0%), friends (15.3%), all information channels (15.2%) or do not trust anyone (6.0%). The most important statistically significant differences in the level of vaccination coverage and willingness to seek medical care were found for a group of people who do not trust any source of information about health or trust only information from the Internet. People who trust information from physicians or pharmacy workers were the most active in vaccinating and seeking medical care. CONCLUSION Conclusions: Communication with patients who do not trust anyone through social networks seems to be a promising way to raise awareness of this group of people about health and increase the level of trust in physicians or certain medical services.