Electron-electron interaction in carbon nanostructures

The electron-electron interaction in carbon nanostructures was studied. A new method which allows to determine the electron-electron interaction constant $\lambda_c$ from the analysis of quantum correction to the magnetic susceptibility and the magnetoresistance was developed. Three types of carbon materials: arc-produced multiwalled carbon nanotubes (arc-MWNTs), CVD-produced catalytic multiwalled carbon nanotubes (c-MWNTs) and pyrolytic carbon were used for investigation. We found that $\lambda_c$=0.2 for arc-MWNTs (before and after bromination treatment); $\lambda_c$ = 0.1 for pyrolytic graphite; $\lambda_c >$ 0 for c-MWNTs. We conclude that the curvature of graphene layers in carbon nanostructures leads to the increase of the electron-electron interaction constant $\lambda_c$.Comment: 12 pages, 18 figures, to be published in the Proceedings of the NATO Advanced Research Workshop on Electron Correlation in New Materials and Nanosystems, NATO Science Series II, Springer, 200

Content of protein and glycoproteins, their components in the oral fluid in children with chronic gastritis, duodenitis

In the oral fl uid of children with chronic gastritis, duodenitis there is the increased protein content (up to 7.33±0.43 g/l) against the background of the decreasing level of glycoproteins (up to 0.03±0.01 mg/ml). Coeffi cient of ratio protein / glycoproteins in the oral fl uid is increased by a factor of 9510, which has shown the intensive decay of protein-carbohydrate complexes and the increasing content of the protein fragments. In the composition of glycoproteins there is the reduced amount of hexosamines (up to 0.23±0.01 mmol/l), against the background of the increasing sialic acids (up to 0.16±0.01 mmol/l) and fucose (up to 0.87±0.02 mmol/l). Coeffi cient of ratio of terminal and corpus monosaccharides in the glycoproteins of the oral fl uid in patients with chronic gastritis, duodenitis is increased by a factor of 2.41 and 3.34, as compared to the same values in the control group of children, which signifi cantly modifi es the functional properties of the protein-carbohydrate complexes

Planning algorithm for efficient and sustainable crop production

The process of agricultural production is associated with a complex of factors of a different nature: systemic, technological, biological, socio-economic, climatic, reproductive, environmental. All of them influence the size and stability of economic and financial results. There is a threshold level of enterprise management complexity, the excess of which motivates agribusiness to switch to computerized methods. Management of an agricultural enterprise should be based on planning results, updated in a rolling mode. When developing the annual plan, it is necessary to take into account a lot of heterogeneous information and tend to the optimal solution – the achievement of the target indicators with the minimum expenditure of resources. As the basis of the optimal annual planning system, the article proposes an economic-mathematical model for optimizing the production and industry structure of an agricultural enterprise, which includes the following modules: assessment of the parameters of the yield production functions based on field history, the formation of a fertilizer application plan with justification of economically feasible yield levels, solving the problem of optimizing the sectoral structure of crop production, taking into account the forecrop influence in the crop rotation. The algorithm for finding an effective and stable production structure under various combinations of environmental conditions implements the following sequence of procedures: generation of parameter combinations of the economic-mathematical model; obtaining the optimal solution for each combination of these parameters; assessment of the mathematical expectation of the efficiency criterion and variance for each optimal solution on a variety of parameter combinations; choice of a highly effective solution with a low dispersion of this efficiency. To implement this algorithm, the method of simulation experiments in the space of system parameters is used. The optimal solution is chosen by minimizing the distance to the “ideal point” (maximum efficiency, minimum dispersion).El proceso de producción agrícola está asociado con un complejo de factores de diferente naturaleza: sistémicos, tecnológicos, biológicos, socioeconómicos, climáticos, reproductivos, ambientales. Todos ellos influyen en el tamaño y la estabilidad de los resultados económicos y financieros. Existe un nivel umbral de complejidad de gestión empresarial, cuyo exceso motiva a los agronegocios a cambiar a métodos computarizados. La gestión de una empresa agrícola debe basarse en resultados de planificación, actualizados en un modo continuo. Al desarrollar el plan anual, es necesario tener en cuenta mucha información heterogénea y tender a la solución óptima: el logro de los indicadores objetivo con el gasto mínimo de recursos. Como base del sistema óptimo de planificación anual, el artículo propone un modelo económico-matemático para optimizar la producción y la estructura industrial de una empresa agrícola, que incluye los siguientes módulos: evaluación de los parámetros de las funciones de producción de rendimiento en función del historial de campo, la formación de un plan de aplicación de fertilizantes con justificación de niveles de rendimiento económicamente factibles, resolviendo el problema de optimizar la estructura sectorial de la producción de cultivos, teniendo en cuenta la influencia de la cosecha en la rotación de cultivos. El algoritmo para encontrar una estructura de producción efectiva y estable bajo diversas combinaciones de condiciones ambientales implementa la siguiente secuencia de procedimientos: generación de combinaciones de parámetros del modelo económico-matemático; obtener la solución óptima para cada combinación de estos parámetros; evaluación de la expectativa matemática del criterio de eficiencia y la varianza para cada solución óptima en una variedad de combinaciones de parámetros; elección de una solución altamente efectiva con una baja dispersión de esta eficiencia. Para implementar este algoritmo, se utiliza el método de experimentos de simulación en el espacio de los parámetros del sistema. La solución óptima se elige minimizando la distancia al "punto ideal" (máxima eficiencia, mínima dispersión)

Авіаційна навігаційна система на основі поляриметричних технологій

The paper deals with questions of developing polarimetric navigation method for determiningaircraft’s coordinates. This method, potentially, can increase the accuracy and sensitivity of navigationparameters determination. The paper also deals with existing methods and systems for determining aircraft’snavigation parameters and proposed polarimetric method. Also offered block diagrams of the onboardand ground polarimetric device. In article were given result of the mathematical modeling of measuringchannelРассмотрен вопрос разработки поляриметрического навигационного метода для определения координат воздушного судна. Этот метод, потенциально, позволяет повысить точность и чувствительность определения навигационных параметров. Рассмотрены существующие методы и системы и предложен поляриметрический методдля определения навигационных параметров летательного аппарата. Предложена блок-схема бортового и наземного поляриметрического устройства. Приведены результаты математического моделирования измерительного каналаРозглянуто питання розроблення поляриметричного навігаційного методу для визначення координат повітряного судна. Цей метод, потенційно, дозволяє підвищити точність та чутливість визначення навігаційних параметрів. Розглянуто існуючі методи і системи та запропоновано поляриметричний метод для визначення навігаційних параметрів літального апарату. Запропоновано блок-схему бортового і наземного поляриметричного пристрою. Приведено результати математичного моделювання вимірювального канал

The problem of individualization of legal entities in terms of innovative development of the Russian Federation and the European Union economy

This article is a comprehensive analytical study of the problem of individualization of legal entities in terms of innovative development of the Russian Federation and the European Union. Using the latest methodology of scientific research, the authors provide a justification of the legal institution of individualization, as well as offer a wide range of means of individualization of innovation actors and participants, including in the virtual space of the Internet.peer-reviewe

Synthesis of nitroxyl radical by direct nucleophilic functionalization of a C-H bond in the azadiene systems

Cyclic dinitrones underwent nucleophilic substitution of the hydrogen atom in the reaction with a paramagnetic carbanion, the lithium derivative of 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl 3-oxide, to give polyfunctional nitronyl nitroxyls. © 2012 Springer Science+Business Media New York

Analysis of the efficiency of production of whole-muscle turkey products with vegetable sprinkles

Human health is largely determined by the nature, level and structure of nutrition. A promising direction in the development of new food products is the expansion of the base of used ingredients used to partially replace meat raw materials with vegetable ones, in order to maximize the saturation of products with nutrients that contribute to the maintenance of normal life of the consumer. The use of new food ingredients contributes to the actual task set by the State policy in the field of healthy eating — expanding the range of enriched and functional food products. The work is devoted to the study of baked whole-muscle products using turkey meat and vegetable dressing as sources of high protein content, which solves the problem of deficiency of this component in the diet. A recipe for brine with the addition of the food additive “Glimalask”, which has a complex effect on the products under study, has been presented. The evaluation of quality indicators of finished products has been carried out, the article presents the results of a comparative analysis of baked whole-muscle turkey meat products, calculations of the product cost price. The comparative analysis has shown that, in comparison with the control sample, the baked whole-muscle products from turkey meat with vegetative dressing have improved physical and chemical properties, outstanding organoleptic characteristics, the yield of the product increases by 9.0–12.0%, depending on the formulation. Differences in the dynamics of microbial growth in the experimental and control samples were insignificant, the vegetable dressing helps to slow the growth of microorganisms on the surface of the product. The presented baked whole-muscle turkey meat products using optimized brine and vegetable sprinkles of chickpeas, sesame and paprika are recommended to a wide range of consumers of different age groups

Elemental composition of soils of the Pur-Taz interfluve

In order to evaluate the chemical composition of natural background environments of Pur-Taz interfluve (Western Siberia), the mineral components of soils, peats, lichens, and sphagnum mosses have been analyzed. The samples were tested using X-ray fluorescence technology. The average contents of hazardous metals in the soils of the Pur-Taz interfluve are either lower (for Cu, Pb, Zn, Ni, Sr) or equal to (for Hg, Co) the average values of these elements in the Earth's crust. This finding corresponds to the commonly held view that the contents of elements in the soils located in the north of Western Siberia are lower than the world averages. Additionally, in our samples low concentrations of copper and zinc have been observed. Since these microelements are important for soil physiology, this finding indicates unfavorable biochemical conditions in the research area. On the other hand, high concentrations are observed for inactive elements such as Mo, Sn and Zr. The significant differences have been identified in the composition of mineral and organic soil horizons. For instance, the average concentrations of P, Zn and S in organic horizons are 7.1, 8.1 and 18 times greater than in the illuvial mineral horizons, respectively. The intense accumulation of Zn, Cu, Cd, Hg has been recorded, all of them are chalcophiles in the ombrotrophic peat. This means that the chemical composition of soil is largely determined by biological accumulation of chalcophile elements. The content of lithophilic Al, Si, Ti and Zr, coming with dust precipitation from the atmosphere increases in the peat of dwarf shrub-moss-lichen tundras and larch woodlands. The revealed values of the elemental composition of soils can be recommended as background in the course of the environmental monitoring

Influence of the atomic-wall collision elasticity on the coherent population trapping resonance shape

We studied theoretically a coherent population trapping resonance formation in cylindrical cell without buffer gas irradiated by a narrow laser beam. We take into account non-zero probabilities of elastic ("specular") and inelastic ("sticking") collision between the atom and the cell wall. We have developed a theoretical model based on averaging over the random Ramsey pulse sequences of times that atom spent in and out of the beam. It is shown that the shape of coherent population trapping resonance line depends on the probability of elastic collision.Comment: 18 pages, 5 figure