Numerical-analytical solution of the problem of multicomponent mixture fractionation under action an electric field is constructed. This problem is known as the problem of zonal electrophoresis which extensively used in chemistry, medicine, and biology. Problem is reduced to study of the Cauchy problem for systems of hyperbolic type quasilinear equations in partial derivatives of first order. The proposed method is based on a generalized hodograph method, which allows obtaining an analytical solution of the problem in implicit form. Explicit form of the solution is recovered using the transformation of the Cauchy problem for system of quasilinear hyperbolic equations to the Cauchy problem for a system of ordinary differential equations that are solved numerically.
Keywords: electrophoresis, hyperbolic conservation laws, generalized hodograph method
This paper investigates the possibility of applying neural networks to problems of reverse calculation of multi-layered road structure. The paper considers networks with different architecture. To improve the conditions of convergence are applied the back-propagation procedure with automatic selection step, different types of activation functions with varying parameters.
Keywords: neural networks, inverse problems, polutorospalny predictor, the two-layer perceptron, the approximation of the activation function
Introduction of the automated metering stations and regulation (AUU) located directly in the heated building besides creation of comfortable conditions indoors leads to decrease in consumption of thermal energy. In work the assessment of economic effect for inhabitants of an apartment house after installation of pogodozavisimy regulation is carried out.
Keywords: individual thermal point, the automated metering station and regulations, pogodozavisimy regulation, decrease in heatconsumption, economic efficiency
The article examines the factors affecting the performance of the precinct speed on the North Caucasus Railway. Identified and justified the need for improved planning of export traffic on the basis of simulation, compliance with the contents of the working rules of the park, the presence of which will not lead to difficulties in the passage of trains on the road. Suggested departure and arrival of trains at the final station to carry on a fixed schedule.
Keywords: analysis, service speed, cause-and-effect relationships, capacity, from the movement of delayed trains, events, efficiency
The results of processing of experimental studies of physical and mechanical properties of the samples centrifuged and vibrated. Evaluation of heterogeneity of fresh concrete properties to determine the changes in water-cement ratio (W / C), the residual water content and density of the thickness of the sample centrifuged, and the change of the strength properties of the hardened betona.Analiz experimental data showed that there is a significant change in the average density of the concrete (up to 4 %), the total porosity of the layer in a slurry is increased by almost 18%, while the strength of the concrete is changed in thickness to 18-25%. Using the method of least squares, obtained the strength of concrete patterns of change in the thickness of the samples.
Keywords: spun concrete, physical and mechanical properties of fresh concrete, strength characteristics of hardened concrete
The paper analyzes the influence of anthropogenic and climatic factors and changes in aquatic ecosystems Kuban basin on the growing problem of iodine deficiency. The analysis allows to see that the additional impact of complex human influence adversely affects the incidence of thyroid disease population zhelezy.Predstavleny recommendations for addressing environmental health and reduce the risk of iodine deficiency disorders.
Keywords: anthropogenic load, Pool Kuban River, iodine deficiency disorders, goitrogenic effect preventive measures.
Long found a direct link between the quality of drinking water and human longevity. Heavy metals getting into our bodies remain there forever, you can get them only with the help of milk proteins and porcini mushrooms. They poison human body, they are also mechanically clog it - heavy metal ions deposited on the walls of the body and thinnest systems clog channels kidney, liver channels, thereby reducing the filtration capacity of these organs. Accordingly, this leads to an accumulation of toxins and waste products of cells of our body, i.e. self-poisoning organism. Ecological forecasting is based on a miscalculation of the possible future behavior of natural systems under the influence of both natural processes and anthropogenic factors. It is therefore advisable during environmental monitoring use spatial modeling of pollutants in the aquatic environment, which will allow to visualize the distribution of pollutants and to reveal the dynamics of pollution. The results of modeling the distribution of pollutants into waters of the Gulf of Taganrog.
Keywords: Ecological forecasting, environmental monitoring, drinking water, heavy metals.
The universal computerised complex for determination of quality characteristics of a dispensing of seeds by the apparatus of precise seeding is observed. The processing method of loggable signals is presented. The observed complex, with application of a metering equipment and a processing method of the data, allows to size up quality of operation of the sowing apparatus of precise seeding. In particular to define allocation of feed of seeds to which refers to droppings, one-piece feeds, two-piece feeds and feeds of the higher order. Also by means of a complex registration of amount of dosing elements and total of the gived seeds for experience is simultaneously led.
Keywords: seeding, dispensing, sensor, registration, sound card, signal, dropping, feed, seeds, sowing apparatus
The article deals with the nature of interrelation of the phenomena ""preservation of national value traditions"" and ""ensuring economic dynamism"" in the context of the strengthening of the national security of Russia in the era of information revolution and the transition to new technological way which is characterized by such relevant characteristics as the intellectualization of industries, the development of new technologies of management and continuous education, the formation of cultural and informational environment. The models of cultural enlightenment and cultural development focused on the resources provision and technological support of socio-cultural and economic (in the innovative vein) development of the country through the partnership of the state and society are described in the article, taking into account the state cultural policy tools as author’s cognitive methodological construct aimed at the accumulation of powerful protective potential of the Russian culture in the practice of public administration.
Keywords: State cultural policy, national security, cultural enlightenment, cultural development, “soft power”, innovative development
The technique of pilot natural studies by definition of critical effort at which there is a capsizing of the trees together with root system growing on coast of reservoirs of the hydroelectric power stations subject to washout as a result of impact of fluctuations of water level, wind, wave loadings and abrasion is given It is necessary for establishment of possibility of use of trees of a coastal zone as support of rope system of devices for collecting and transportation of wood. Pilot studies were conducted on Bratsk and Ust-Ilimsk reservoirs during the period from 2000 to 2012.
Keywords: coastal zone of reservoirs, the washed-away coast, the coastal water area, critical effort, wind loading, effort of rooting out, prism of roots , support of rope installation, wood transportation, "ownerless wood"
In article considered new rigging locks, for reliable fastening of raft side binding, chains, bindings when forming sections, rulers and rafts from assortments and switches, and also the "ownerless" wood with various dimensional characteristics differing in simplicity, availability and low cost of their production in the conditions of repair bases the timber floating of the enterprises are described.
Keywords: rigging lock, timber bundling, raft, wood alloy, "ownerless wood", coastal water area
The overall objective for the Crimea and southern regions - to establish continuous communications between the mainland and the peninsula , reliable rail and sea links . To solve it approaches analyzed power port stations and the level of loading ports , a list of the range of goods, they are working to establish specialization and rational distribution of ports handling volumes between them.
Keywords: Black Sea region , the Crimea, Southern Region , the Kerch Strait , the turnover , railways, sea port , ferry , carrying capacity , the livelihoods of the Crimea , the prospect of
In conditions of growing competition in consumer markets in assessing the quality of transport services in terms of significantly increased requirements to the urgency of the delivery of loaded and empty railcars to destinations that characterizes the quality of transport commitments the participants of the transportation process: carrier, train operators, shippers and consignees. From the time of delivery of loaded and empty wagons depends on the efficiency of transport, the acceleration of the turnover of rolling stock and the safety of transported goods. Consider the article to address this problem on a concrete example of cargo delivery to the Novorossiysk transport hub.
Keywords: Transport infrastructure, analysis, global standards, time of delivery of goods, work wagons, legal framework, operational costs, efficiency
The features of the formation of composite coatings deposition layered matrix with alternating layers of nickel and copper by chemical vapor deposition. It is shown that the deposition process is oscillatory, detects the presence of polyvinylpyrrolidone, obrazuyuschegokompleksnye connection with copper and nickel.
Keywords: composite coating, chemical vapor deposition, nickel, copper, polyvinylpyrrolidone, oscillatory deposition process, the complex compound of nickel and copper
The technique of determination of local atomic structure in the vicinity of absorbing atom in the case of the presence of strong correlation between fitting parameters is proposed. This technique is applied to three test signals simulating the Pt L3-edge EXAFS spectra of Pt/Ag bimetallic nanoparticles. The test results demonstrates the improvements in precision of determined parameters comparing with common technique.
Keywords: Extented X-ray Absorbtion Fine Structure, EXAFS, multiparameter curve fitting, correlation between fitting parameters, bimetallic nanoparticles, local atomic structures, CUDA