Growth and formation of the foreleg skeleton inbred mice and rats under conditions of hypo-, normo- and hyperdynamia

Inbred 1 month old males of C57B 1/6, CBA, CC57Br/Mw interlinear hybrid mice of the first generation and rats of the August and Wistar lines were subjected to conditions of hypo-, normo- and hyperdynamia for 2 months. The statistically reliable dependence is shown between mechanical underloadings and overloadings and macro microscopic changes in the hind limb skeleton of animals. Genetic determination of growth and formation of the forelimb skeleton is established. Hereditary susceptibility and the phenomenon of heterosis are preserved under all motor conditions

Electron energy spectrum of the spin-liquid state in a frustrated Hubbard model

Non-local correlation effects in the half-filled Hubbard model on an isotropic triangular lattice are studied within a spin polarized extension of the dual fermion approach. A competition between the antiferromagnetic non-collinear and the spin liquid states is strongly enhanced by an incorporation of a k-dependent self-energy beyond the local dynamical mean-field theory. The dual fermion correc- tions drastically decrease the energy of a spin liquid state while leaving the non-collinear magnetic states almost non-affected. This makes the spin liquid to become a preferable state in a certain interval of interaction strength of an order of the magnitude of a bandwidth. The spectral function of the spin-liquid Mott insulator is determined by a formation of local singlets which results in the energy gap of about twice larger than that of the 120 degrees antiferromagnetic Neel state.Comment: 6 pages, 4 figure

Utilization of secondary energy resources of metallurgical enterprises using heat pump

Thermal secondary energy resources (SER)in metallurgical production can be divided intohigh-temperature and low-potential energy sources (with temperatures below 50 C). We haveconsidered the ways of using low-potential thermal SER of a metallurgical plant. According to the traditional scheme, the circulating water is cooled in a cooling tower with the return of the heat of cooling to the environment.We propose to use a heat pump driven by a heat engine instead of a cooling tower. The scheme consists of a compression heat pump with a heat output of 4200 kW, a working agent R 600, a source of low-potential heat-circulating water: a 460 kW gas engine. The proposed scheme showed high efficiency of power supply of the town in comparison with the gas boilerKeywords: heat pump; internal combustion engine metallurgical plant; energy efficienc

The radiation focusing by the array of waveguide based elements with controllable reflection

The authors propose a solution of the problem of radiovision using the reflective array, each element of which can change the reflection coefficient under the action of external control voltage. The focusing abilities of flat reflection array of monochromatic radiation were studied to solve the problem of radiovision. The array element based on waveguide with a controlled reflection coefficient was developed. The phase shift switching is 180°

Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory

Strong electronic correlations pose one of the biggest challenges to solid state theory. We review recently developed methods that address this problem by starting with the local, eminently important correlations of dynamical mean field theory (DMFT). On top of this, non-local correlations on all length scales are generated through Feynman diagrams, with a local two-particle vertex instead of the bare Coulomb interaction as a building block. With these diagrammatic extensions of DMFT long-range charge-, magnetic-, and superconducting fluctuations as well as (quantum) criticality can be addressed in strongly correlated electron systems. We provide an overview of the successes and results achieved---hitherto mainly for model Hamiltonians---and outline future prospects for realistic material calculations.Comment: 60 pages, 42 figures, replaced by the version to be published in Rev. Mod. Phys. 201

Conservação de água durante o uso de dispositivos de irrigação de múltiplos suportes nas condições da região de Moscou

The paper focuses on problem of water quality around irrigated soils. It was discovered that flushing of the fertile layer occurs on terrains near protected watersheds because of destroying irrigation procedures. The modernization of irrigation machines has been suggested as a solution for above-mentioned problem. The technological features of circle irrigation machines (IM) in the conditions of complicated soil relief are defined by their supportings including: tow-grip crossing capacity and slipping of carts on the slope. The operating results have been given according to evaluation of IM work in difficult conditions with the picture of their changes in the diagram dependences. The above-mentioned devices are improved to create environmentally friendly and energy-saving solutions in order to enhance the reliability of IM while watering sloping lands In the area of softening of complex soils that refers to the safety and quality of maintenance while the reduction in the amount of water and energy consumption as well as the cost of irrigation system structure, the scientific concepts are searching for tools to providing highly efficient IM work. The main goal of the work is using the obtained results of research in a practical way as to create and modify IM in order to exercise the irrigation tools conveniently and also generally determine the efficiency of machinery while reducing energy and water consumption as well as providing soil cooling technologies using water from irrigation.El documento se centra en el problema de la calidad del agua alrededor de los suelos irrigados. Se descubrió que el enrojecimiento de la capa fértil se produce en terrenos cercanos a cuencas protegidas debido a la destrucción de los procedimientos de riego. La modernización de las máquinas de riego ha sido sugerida como una solución para el problema mencionado anteriormente. Las características tecnológicas de las máquinas de riego en círculo (IM) en las condiciones de alivio de suelo complicado se definen por sus apoyos, que incluyen: capacidad de cruce con agarre de remolque y deslizamiento de carros en la pendiente. Los resultados operativos se han dado de acuerdo con la evaluación del trabajo de IM en condiciones difíciles con la imagen de sus cambios en las dependencias del diagrama. Los dispositivos mencionados anteriormente se han mejorado para crear soluciones respetuosas con el medio ambiente y que ahorran energía para mejorar la confiabilidad de IM mientras se riegan las tierras con pendiente En el área de ablandamiento de suelos complejos que se refiere a la seguridad y la calidad del mantenimiento, mientras que la reducción de la cantidad de consumo de agua y energía, así como el costo de la estructura del sistema de riego, los conceptos científicos están buscando herramientas para proporcionar un trabajo de IM altamente eficiente. El objetivo principal del trabajo es utilizar los resultados obtenidos de la investigación de manera práctica para crear y modificar la IM con el fin de ejercer las herramientas de riego de manera conveniente y también, en general, determinar la eficiencia de la maquinaria al tiempo que reduce el consumo de energía y agua, así como también proporciona suelo Tecnologías de enfriamiento utilizando agua de riego.O artigo enfoca o problema da qualidade da água em torno dos solos irrigados. Descobriu-se que a descarga da camada fértil ocorre em terrenos próximos a bacias protegidas por causa da destruição de procedimentos de irrigação. A modernização de máquinas de irrigação tem sido sugerida como uma solução para o problema acima mencionado. As características tecnológicas das máquinas de irrigação circular (IM) nas condições de relevo complicado do solo são definidas pelos seus apoios, incluindo: capacidade de passagem do cabo de reboque e escorregamento dos carros na encosta. Os resultados operacionais foram fornecidos de acordo com a avaliação do trabalho de IM em condições difíceis, com o quadro de suas mudanças nas dependências do diagrama. Os dispositivos mencionados acima são aprimorados para criar soluções ecologicamente corretas e de baixo consumo de energia, a fim de aumentar a confiabilidade do IM durante a irrigação de terras em declive na área de amolecimento de solos complexos que se referem à segurança e qualidade da manutenção enquanto a redução do quantidade de água e consumo de energia, bem como o custo da estrutura do sistema de irrigação, os conceitos científicos estão à procura de ferramentas para fornecer trabalho altamente eficiente IM. O principal objetivo do trabalho é usar os resultados obtidos da pesquisa de forma prática para criar e modificar IM, a fim de exercitar as ferramentas de irrigação convenientemente e também determinar a eficiência do maquinário, reduzindo o consumo de energia e água, bem como fornecendo o solo. tecnologias de refrigeração usando água da irrigação

Structure of the high efficiency the specialized calculator for modeling problems of navigation

Розглядається проблема комп’ютерного моделювання задач навігації для управління рухом повітряного судна. Запропонована організація високопродуктивної спеціалізованої структури для обчислення сум парних добутків матриць з метою покращення продуктивності систем управління та спрощення структурної організації бортових обчислювачівРассматривается проблема компьютерного моделирования задач навигации и управленичя движением воздушного судна. Предложена организация высокроизводительной специализированной структуры для вычмсления сумм парных произведений матриц с целью улучшения производительности систем управления  и упрощения структурной организации бортовых вычислителейThe problem of computer modelling of problems of navigation and traffic control of an air vessel is considered. The organisation of high-efficiency specialised structure for calculation of the sums of pair products of matrixes for the purpose of improving productivity of control systems and simplification the structural organisation of airboard computers is offered

Radiotomographic system construction on the basis of multi-elemental reflective array

The authors propose a solution of the problem of radiovision using the reflective array, each element of which can change the reflection coefficient under the action of external control voltage. The focusing abilities of flat reflection array of monochromatic radiation were studied to solve the problem of radiovision. The array element based on waveguide with a controlled reflection coefficient was developed. The phase shift switching is 180°

Co-infection of Trichuris vulpis and Toxocara canis in different aged dogs: Influence on the haematological indices

Trichuris vulpis and Toxocara canis are worldwide parasitic nematodes affecting dogs and mammals of the Canine family. Due to the special structure of the shells, the eggs of these geohelminths can maintain their viability in soil, sand, water and the environment for a long time. The study involved young (6–12 months old) and adult (1.5–8.0 years old) dogs affected by co-infection of T. vulpis + T. canis; the control group consisted of dewormed healthy animals of the same age. Parasitological examination of dogs' faeces was performed using a "Counting Chamber for Ovoscopic Researches"; morphological parameters, indicators of nutrient metabolism, mineral metabolism and activity of enzymatic systems were determined in blood and serum. According to the results of parasitological research on the dogs, it was found that young animals are more prone to toxocarosis, and adults – trichurosis. The co-infection of nematodes T. vulpis + T. canis in dogs develops several changes in haematological parameters: a significant decrease in erythrocytes, haemoglobin, MCV, MCH, and haematocrit, leukocytosis with basophils and eosinophilia in young infected animals; and eosinophilia and basophilia (15.9 times) in adults, compared with healthy dogs of the same age. Among the changes in serum biochemical parameters, young infected dogs showed a decrease in the concentration of total protein and albumin content, an increase in the content of "acute phase" proteins (α-1, α-2 and β-globulins), an increase in cholesterol and total bilirubin; in adult infected dogs, a decrease in albumin content, an increase in the content of α-1, α-2, and β-globulins, an increase in the concentration of cholesterol and total bilirubin, a decrease in the concentration of urea in comparison with healthy animals were determined. Also, among the indicators of mineral metabolism, a decrease in the concentration of calcium and magnesium in the serum was found in young infected dogs. Among the changes in the enzyme metabolism in the serum of infected dogs, there was an increase in the activity of all studied enzymes in animals of both research groups: ALT, AST, α-amylase, GGT and ALP. Thus, co-infection with nematodes T. vulpis + T. canis has a complex pathogenic effect on the body of dogs of all ages, which manifested itself in multiple changes in haematological parameters. In the future, the authors’ team plan to develop comprehensive measures to combat nematode infections in different living conditions of dogs, taking into account the results of the current research