Financial Management, Resource Efficiency and Resource Saving

This paper discusses the issues of competitiveness, resource efficiency and resource saving, as well as financial costs regardingthe project of relay protection of the autotransformer 220/110/35 kV at the "Krokhalevskaya" substation. Despite the fact that allenergy facilities are built according to a large list of requirements, rules and standards, each facility remains unique, so it isimportant to choose the most appropriate equipment. Competitiveness analysis is carried out for this purpose. SWOT analysishelps to identify strengths, weaknesses, opportunities and threats associated with the project, and give an idea of working withthem in each particular case. For the development of the project requires funds that go to the salaries of project participants andthe necessary equipment, a complete list is given in the relevant section. The calculation of the resource efficiency indicator helpsto make a final assessment of the technical decision on individual criteria and in general

Fundamental groups of highly symmetrical curves and Fermat line arrangments

We showcase a computation of the fundamental group of $\mathbb{CP}^2 - \mathcal{C}$ when $\mathcal{C}$ is a curve admitting a lot of symmetries. In particular, let $\mathcal{C}$ denote the Fermat line arrangement in $\mathbb{CP}^2$ defined by the vanishing locus of homogeneous polynomial $(x^n-y^n)(y^n-z^n)(z^n-x^n)$. In this article, we compute the fundamental group $\pi_1(\mathbb{CP}^2-\mathcal{C})$ of complement of this line arrangement in the complex projective plane. We show that this group is semi-direct product of $G$ and $F_n$, i.e., $\pi_1(\mathbb{CP}^2-\mathcal{C}, \overline{\epsilon}) = G \rtimes F_{n}$, where $G$ and $F_n$ is defined in 4.3, and 1.2 respectively.Comment: 21 pages, 10 figure

Assessment of the prevalence and severity of the pathological process in patients with acnes with the use of in vivo fuorescence diagnostics

<p><em>Aims. </em>The present research aimed the study of the fuorescence of endogenous porphyrins of the skin in patients with acne. <em>Material and methods. </em>20 patients with acne of 1 – 2 degrees of severity were selected. The main research methodology was a selective colorimetry of tissues with using an electronic photographic devices. The research was led with the use of multiple flters. Image areas were synthesized with high fuorescence, and then a combination of these areas with the source image was produced. The images were processed in ImageJ. <em>Results. </em>The examined patients has revealed intensive red glow in the feld of acne-elements before treatment. After the work with an orange flter pictures were more informative. The study suggests that the chosen method for identifcation of quantitative composition of P. acne appears to be noninvasive and highly effcient.</p&gt

The realization space of a certain conic line arrangement of degree 7 and a π1\pi_1-equivalent Zariski pair

In this paper, we continue the study of the embedded topology of plane algebraic curves. We study the realization space of conic line arrangements of degree $7$ with certain fixed combinatorics and determine the number of connected components. This is done by showing the existence of a Zariski pair having these combinatorics, which we identified as a $\pi_1$-equivalent Zariski pair.Comment: 24 page

Features of the dynamics of the optical and physiological properties of muscle tissue in vitro during its compression

Background and Objectives: The compression of human skin is one of the mechanisms of mechanical biotissue optical clearing. In this study we investigated the effects of compression of in vitro cow muscle tissue samples on diffuse reflectance spectra of tissue and changes of its physiological properties. The purpose of research was to identify the correlation between diffuse reflectance of muscle tissue and its compression. Material and Methods: Samples of muscle tissue used in the experiments with a size of 70–50 mm and a thickness of 25 mm were cut from one volume of the loin hart of a cow. After applying pressure to the sample for a time of about 20 minutes, reflectance spectra of the samples were recorded with a time step of 5 seconds. In the experiments, sensors of different sizes were varied with different values of the applied external compression. Results: The dynamics of myoglobin and hemoglobin content in muscle tissue ex vivo in the compression process was determined. In the case of muscle tissue ex vivo, the blood content in it decreases when compression is applied. A similar effect was observed for skin tissue in vivo, but there are also significant differences: if for skin tissue capillary blood, and hemoglobin, when a pressure of about 105 Pa is applied, is completely removed from biological tissue, then myoglobin from muscle tissue samples is not completely removed, the oxygenated form of myoglobin turns into deoxygenated and deoxygenation of myoglobin occurs within a few minutes after the application of compression. Conclusion: In perspective compression of muscle tissue ex vivo can become the basis for a method for controlling the content of hemoglobin and myoglobin derivatives and, as a result, for controlling the color of biological tissue

Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba

The Gulf of Aqaba is an oligotrophic marine system with oxygen-rich water column and organic carbon-poor sediments (≤0.6% at sites that are not influenced by anthropogenic impact). Aeolian dust deposition from the Arabian, Sinai, and Sahara Deserts is an important source of sediment, especially at the deep-water sites of the Gulf, which are less affected by sediment transport from the Arava Desert during seasonal flash floods. Microbial sulfate reduction in sediments is inferred from the presence of pyrite (although at relatively low concentrations), the presence of sulfide oxidation intermediates, and by the sulfur isotopic composition of sulfate and solid-phase sulfides. Saharan dust is characterized by high amounts of iron minerals such as hematite and goethite. We demonstrated, that the resulting high sedimentary content of reactive iron(III) (hydr)oxides, originating from this aeolian dry deposition of desert dust, leads to fast re-oxidation of hydrogen sulfide produced during microbial sulfate reduction and limits preservation of reduced sulfur in the form of pyrite. We conclude that at these sites the sedimentary sulfur cycle may be defined as cryptic

COLLECTIVE HEXADECAPOLE FREEDOM DEGREES OF ATOMIC NUCLEI

The work covers the giant multipole resonances in the atomic nuclei. The aim of the work is to study the influence of the hexadecapole deformation on the excitation of the giant dipole and quadrupole resonances in the non-axial nuclei, to develop the method of the Vigner function moments (VFM). The method of VFM has been developed: the equations for the tensors of the 4-th rank have been derivated. The formulae for splitting of the giant dipole resonance and giant quadruple resonance taking hexadecapole oscillations of the surface in case of the nonoaximal nuclei into consideration have been obtained. The developed methods enable to design the energies and excitation probabilities of both giant resonances and low-laying collective statesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio