Preparation of crystalline Mg(OH)2 nanopowder from serpentinite mineral

In this paper we describe a route to produce crystalline Mg(OH)2 nanopowders from serpentinite ore distributed in the Halilovskiy array (Russia, Orenburg region). An efficient extraction route consisting of treatment on serpentinite in 40% HNO3 at 80 C followed by NH4OH titration for Mg(OH)2 precipitation was demonstrate

Formation of metallic magnetic clusters in a Kondo-lattice metal: Evidence from an optical study

Magnetic materials are usually divided into two classes: those with localised magnetic moments, and those with itinerant charge carriers. We present a comprehensive experimental (spectroscopic ellipsomerty) and theoretical study to demonstrate that these two types of magnetism do not only coexist but complement each other in the Kondo-lattice metal, Tb2PdSi3. In this material the itinerant charge carriers interact with large localised magnetic moments of Tb(4f) states, forming complex magnetic lattices at low temperatures, which we associate with self-organisation of magnetic clusters. The formation of magnetic clusters results in low-energy optical spectral weight shifts, which correspond to opening of the pseudogap in the conduction band of the itinerant charge carriers and development of the low- and high-spin intersite electronic transitions. This phenomenon, driven by self-trapping of electrons by magnetic fluctuations, could be common in correlated metals, including besides Kondo-lattice metals, Fe-based and cuprate superconductors.Comment: 30 pages, 6 Figure

METHODOLOGICAL APPROACHES TO EVALUATING BEER AND NON-ALCOHOLIC PRODUCTS SHELF LIFE

The article discusses the relevance of developing methodological approaches to the beer and soft drinks accelerated aging method in the market. The controlled indicators selection principles, mainly affecting the quality of the finished product, and the basic equation describing the dependence of changes in indicators on the main temperature factor are given. Studies of the influence of various physical factors (temperatures in the range of 50–60 °C, UV-radiation), both individually and jointly, on the physicochemical and organoleptic characteristics of packaged water for various experimental versions did not show statistically significant changes in the normalized parameters of the basic salt and microelement composition investigated water during storage. The optimal mode of accelerated «aging» of packaged water at an elevated temperature (up to 60 °C) and UV-radiation was established. In the case of soft drinks, thermostating was used when changing the temperature regimes (heat 50 ± 2 °C / cold 6 ± 2 °C) at an exposure time of 30 days, which made it possible to observe a decrease in taste and aroma compared with the control, as well as a decrease in sweetness and the appearance of a slight plastic taste for non-carbonated drink. The influence a temperature regime change on brewing products, which cannot be estimated using the existing method due to the high turbidity, is shown.The article discusses the relevance of developing methodological approaches to the beer and soft drinks accelerated aging method in the market. The controlled indicators selection principles, mainly affecting the quality of the finished product, and the basic equation describing the dependence of changes in indicators on the main temperature factor are given. Studies of the influence of various physical factors (temperatures in the range of 50–60 °C, UV-radiation), both individually and jointly, on the physicochemical and organoleptic characteristics of packaged water for various experimental versions did not show statistically significant changes in the normalized parameters of the basic salt and microelement composition investigated water during storage. The optimal mode of accelerated «aging» of packaged water at an elevated temperature (up to 60 °C) and UV-radiation was established. In the case of soft drinks, thermostating was used when changing the temperature regimes (heat 50 ± 2 °C / cold 6 ± 2 °C) at an exposure time of 30 days, which made it possible to observe a decrease in taste and aroma compared with the control, as well as a decrease in sweetness and the appearance of a slight plastic taste for non-carbonated drink. The influence a temperature regime change on brewing products, which cannot be estimated using the existing method due to the high turbidity, is shown

A method for production of phytomineralsorbent, physical and chemical properties of it, effect on the living systems and the quality of the livestock industry products

Numerous experimental studies have shown that the sorption-active substances can clarify the reservoir, soils, drinking municipal water from unwanted impurities with a sufficient degree of effectiveness; eliminate the potentially toxic for health chemicals of different chemical nature from human body. This is ensuring their using in the animal production practice, veterinary medicine and medicine. The main purpose and focus of this study are associated with the solution of problems of the maintaining physiological and biochemical status of live-stock animals. It provides their productivity and biological value of obtained product

Motivation in personnel management of a trading enterprise

Purpose: Investigating the problems of personnel motivation efficiency as one of the most significant factors of the success of an enterprise at the present stage of development of the Russian economy, the authors consider expedient to consider the theory and practice of the personnel motivation system in a commercial enterprise. Design: General scientific (analysis, synthesis, comparison), and special methods of research (economic and statistical, balance sheet, design-calculation and other), document analysis, questioning, and others were used during the study. Findings: The authors revealed that the trading company should focus on the development of a system of motivation in two directions: the improvement of material motivation of staff and the improvement of non-material motivation of staff. Improving the proposed system of staff motivation will allow the company to create a favorable atmosphere in the team, increasing turnover. Practical implications: The obtained results can be used by the head of the enterprise when developing plans to improve the management system and increase investment attractiveness. Originality: This article analyzes the theoretical foundations of motivation in personnel management. Given the organizational and economic characteristics of the trading enterprise, identified the existing system of motivation in the enterprise.peer-reviewe

Peculiarities of the communicative-speech competences of the infants with deviations in language development

Only in the process of communication it is possible to find means which are necessary for interaction. Primary nonverbal means of establishing communicative interaction are improving in continuous practice of communication. Non-verbal means of communication are developing and are improving through communicative gestures and as the add-in under already formed means of communication, the words appear - the first means of verbal communication. Thus, communication with close adults provides the formation of the communicative – speech competences of children. This understanding of the ontogeny of the formation of the communicative-speech competences allows us to draw a conclusion about the gradual displacement of non-verbal means of verbal communication. Moreover, these non-verbal means of communication do not disappear, but they are transferred from fixed assets in the subsidiary. In the context of the studied theme: the communicatively-speech competences of children of early ages are non-verbal and verbal means of interaction with close adults and the methods of their usage with the purpose of reaching the appearing of household, gaming, cognitive and creative needs. To achieve the aim of exploring we used the methods of diagnostics of psycho-speech development of the child of early ages (E. V. Sheremetyeva, 2013), which allowed us to make a communicative-speech profile of the child.In the exploring were involved 40 children of the third year of life. On the basis of the obtained data, we can conclude that young children with deviations in language development in contrast to children with normal speech development have not sufficiently formed communicative-speech competences, which negatively affects the productivity of communication. The information of our experimental exploring is the basis for development of complex methods and methods of psychological and pedagogical support of the formation of communicative and speech competences of children with deviations in language development

Clinical Experience of Luminescent Diagnostics of Precancerous Diseases and Cervical Cancer

The article summarizes the experience of using luminescent diagnostics with the use of ytterbium porphyrin complexes in gynecology and oncology. A pharmaceutical composition based on the Yb complex of 2,4-dimethoxyhematoporphyrin IX was used as the luminescent markers within the infrared range. The determination of luminescence characteristics (luminescence intensity) was carried out using a laserfiber fluorimeter in the range of 900-1100 nm. A new method for diagnosis of cervical disease has been proposed. The method of luminescent diagnostics allows to conduct a survey of a large number of patients in a short time. The method of luminescent diagnostics using the ytterbium complexes of porphyrins is not invasive. The method can be used as a screening. Differences between normal and pathologically altered cervical tissue have been identified and differences between pathological changes in the cervix HSIL (CIN II, CIN III) and cervical cancer are reliable. Keywords: Cervical cancer, squamous cell carcinoma, diagnosis of cervical cancer, squamous intraepithelial lesions of high grade – HSIL, luminescent diagnostics, luminescing in the near infrared (NIR) spectral region, porphyrins, ytterbium complexes of porphyrins