The article deals with the main problems of obtaining experimental data on drying liquid dispersed products. The main difficulties of using a moisture meter to obtain kinetic curves of drying difficult-to-dry liquid materials are given. On the example of lignosulfonate drying curves of samples of liquid product in different conditions are obtained. Presented that the application of the proposed method of the experiment on the moisture meter does not lead to early completion of the operation of the analysis of the drying process.

Keywords: kinetics, moisture meter, drying, moisture, solvent, evaporation, lignosulfonates

The article considers the way of organizing the process of material drying from organic solvents. The typical kinetic curves, observed in the evaporation of solvents. Given received and the recommended equations for calculating the evaporation intensity and the surface temperature of the evaporation in the first period. The analysis of major scientific and technological problems arising in the implementation of new drying technologies.

Keywords: modeling, calculation, drying, solvent, kinetics, evaporation, energy saving

The article presents a description of the main factors, which are necessary for correct simulation of process drying in a fluidized bed of inert particles. The main difficulties encountered in the scaling of laboratory dryers. Specify the nature of the impact interaction of the particles of inert and drying agent on heat-mass transfer in the drying process. Presents the description of the statistical models used to simulate the interaction of particles of inert material. Specify the main parameters and assumptions of the model. Presets the experimental conditions for the analysis of the nature of the motion of individual particles in a fluidized bed.

Keywords: modeling, fluidization, inert, drying, mode, particle, layer, trajectory, scaling

The article presents a description of the nature of the behavior of the fluidized bed consisting of heterogeneous particles, in the apparatus used for drying the dispersed liquid products. Given a description of the features of the experimental setup and methods of processing of obtained results. Describes the characteristic of the observed inhomogeneities of the layer. Shown types formed in the layer of gas bubbles, and describes their coalescence in the layer. Describes the basic mechanisms of coalescence bubbles in a fluidized bed of heterogeneous particles.

Keywords: fluidization, layer, inert, drying, bubble, channel, mode, heterogeneity

The article presents the peculiarities of the kinetics of drying of liquid and pasty products on substrates by the example of drying corn liquid. The description of the operating conditions of experiments. The description of the character of the kinetic curves. Presents an analysis of their behavior that is associated with the mechanism of the formation on the surface of the dried product of the solid crust, dramatically slowing the rate of evaporation from the surface. Describes the effect of the drying on the surface color of the dried product.

Keywords: substrate, drying, pasta, semi-finished product, color, kinetics, cortex, layer

The article presents a description of the possible approaches for the process of intensification of liquid distillery stillage drying in the apparatus with a fluidized bed of inert particles contains a description of some inhomogeneities arising in the study of the drying process in a fluidized bed. Presented the possibility of intensification of the drying process due to the specific interaction of flow of the drying agent and particles of inert.

Keywords: inert, distillery stillage, drying, machine, form, kinetics, intensification, layer, flow, direction, heterogeneity

In this article is reviewed the nature of organic hybrid nanocomposites. Promising directions in the field of organic hybrid nanocomposite materials will be methods for the synthesis of multicomponent materials, as well as the type of "net net" and "host-guest". The fundamental problem with the chemistry and physics of nanocomposites is dependent "structure-property". Solving this problem will move from research materials to their purposeful design.

Keywords: nanocomposite sol-gel technology, synthesis, nanoparticles.

A method of expanding the bandwidth and improve the performance of the differential voltage divider – attenuator (AT), which have parasitic capacitance on the outputs C01, C02. Wide range of transmission of the AT provided by introducing a compensation circuit C01, C02, which is achieving data quality indicators. Simulation results of desired are shown.

Keywords: a resistive voltage divider, differential attenuator, the parasitic сapacitance load, speed, upper frequency limit, analog-to-digital converters.

The methods and results of designing instrumentation amplifiers multidifferential on two operational amplifiers that significantly reduce the voltage of zero drift circuit and its transfer efficiency of the common-mode voltage. In practical terms, these methods can solve the important task of building a precision analog interface for resistive bridge sensors, which operate over a wide temperature range. Also, it is possible to use multi-bit ADC with a significantly lower reference voltage. Keywords: mixed systems on a chip, instrumentation amplifiers, common-mode signal, multidifferential DU, voltage zero drift, temperature range, multibit ADC.

Keywords: mixed systems on a chip, instrumentation amplifiers, common-mode signal, multidifferential OA, voltage zero drift, temperature range, multibit ADC.

This paper present method of speed increasing differential and no differential driver (output stage transistor logic, emitter and source followers, the circuit of feedback amplifiers, etc.). Сonsiders conditions of correcting circuits design, which compensates the effect of the parasitic capacitance to its range of operating frequencies and the settling time of the transition process.

Keywords: drivers, emitter and source followers, operational amplifier, correcting circuit, performance, upper frequency limit, rise time transient, stability.

Сollector mm-wave load circuit of differential stages, as well as the optimization of Q-factor are considered. Optimization of the form of microstrip line in order to increase quality factor is shown. Differential line shorted at one end, at the resonant frequency in the operating mode of the standing wave. At the shorted end of the line voltage is at minimum level, while the current at the maximum, so losses are mainly due to the series resistance of the microstrip line. On the other side of the line, the current is minimized, and the voltage - maximum, so the parasitic losses associated with shunt conductance between the differential lines. This effect use for reducing line losses and increasing the Q-factor. To this end, at the shorted end of the line is necessary to increase the line width and the gap between them, and at the other end to reduce the width and gap.

Keywords: resonant circuit, SiGe, mm-wave, BiCMOS, monolithic integrated circuit

The paper discusses the features of method of extension of circuit’s operating frequency range of the source and the classical emitter voltage follower (VF). The features of this method based on the effect of the mutual compensation of the parasitic impedances are considered. Problem of improving operation speed of VF with output capacitance and reducing the time of establishment of transient at pulsed input voltage are discussed.
The simulation results of VF in Cadence on model of SiGe integrated transistors are given. This shows that with capacitive load high-frequency cutoff, the time of establishment of transient and the slew rate improved to tens - hundreds of times. 
The results of investigate complement of methods of improving operation speed of the classical stage with a common drain and common collector.

Keywords: operating frequency range, source follower, emitter follower, operational speed, broadband amplifier

  The work is devoted to the development of an intelligent system for monitoring high railway embankment, which allows to analyze its condition and make early solutions to manage the safety of vehicles. The main features of the system and its difference from known analogs is taking into account the dynamic effects of vehicles on a high embankment at different climatic conditions. This paper describes the main stages of building the monitoring system, which includes: selection of objects for monitoring, computer modeling of the interaction of the rolling stock and a high embankment, the algorithms required for the development of management decisions. 

Keywords: high embankments, risk assessment, destruction, monitoring, computer modeling, intelligent system.

Article is devoted to justification of approaches to development of algorithm of an assessment of influence of railway transport on a state of environment for ensuring ekologo-economic safety of the country. Offers on use what econometrical modeling for development of imitating model of system of environmental management for the purpose of damage prevention to environment from impact on it anthropogenous factors of the enterprises-prirodopolzovateley, including emergency situations are proved. Stages of realization of a technique of an ekologo-economic justification of nature protection administrative decisions in environmental management system on railway transport are considered.

Keywords: railway transport, influence, assessment, ekologo-economic safety, environment, administrative nature protection

The article reveals the relationship of concepts such as cost-effective development of transport and environmentally safe economically sustainable development of society. Manage transport factors influence on the environment, the rational and efficient use of natural resources, development and use of evaluation criteria will ensure management decisions aimed at ensuring the environmental and economic security of the country.
Keywords: transportation, management, ecological and economic security, the criterion evaluation technique.

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