Analysis of modern methods of preparation of gas sensors than utilize nanostructural materials in the basic construction has been made. Nanostructural materials utilization in the sensor increases specific surface area of its sensitive layer. Two groups of the methods that promote to solve this task were selected. The first one is related to the utilization of nanoporous anodic alumina substrate and/or membrane as sensor template. The second one includes the preparation of the sensitive layers based on the 1D–3D nanostructures. Enhancement of the sensor output characteristics is determined by the collection of advanced physicalchemical properties of nanomaterials and nanostructures utilized in the sensor construction.

The theoretical and experimental results of longitudinally continuous-wave diode-pumped Yb:Y3Al5O12 (YAG) laser performance for compact field-condition measuring systems were demonstrated. Optimization of laser setup in terms of operation condition in the range of -40 ˚С – +65 ˚С without active thermal stabilization was carried out. Using Yb (10 ат.%):YAG crystal with the length of 3 mm the maximal output power more than 2 W was obtained in the whole of temperature range.

Describes nonlinear optical frequency converter of laser radiation based on the two LBO type I crystals allowing to receive pulses of radiation at three wavelengths of 1064 nm, 532 nm and 355 nm with an adjustable pulse energy. For fine adjustment of the output pulse energy used two dual phase plates that change the orientation of the plane of polarization of the two waves in cascade third harmonic generation. Measured the efficiency of the generation of harmonics of the intensity of radiation at 1064 nm.

Proposed structure and layout of the target and on-board equipment microsatellite for remote sensing of the Earth, taking into account its impact on the main disturbing factors occurring in the derivation and operation of spacecraft in orbit. Recommendations on the choice of optimal design of micro power skeleton, based on modeling the impact on his body external loads.

Studies swing balls on flat substrate in pre-rolling, when the amplitudes of their oscillations are essentially less than radius of contact patch. A new phenomenological theory of rolling resistance is offered. This theory allows to determine moment of rolling resistance, friction coefficients, as well as determine the starting torque and the energy density of the peel adhesion. Describes the experimental setup and the experimental results, which are consistent with a mathematical model with high accuracy. In all the experiments gives estimates of accuracy.

Improvement of repeatability and reliability of semiconductor wafers properties monitoring with a probe charge-sensitive methods is achieved by realization of Kelvin probe self-calibration mode using a wafer’s surface itself as a reference sample. Results of wafer surface scanning are visualized in the form of parameter distribution color map. A method of measurements based on Kelvin probe self-calibration mode is realized in a measurement installation for non-destructive non-contact monitoring of semiconductor wafer defects. Method can be used to define defects’ physical properties including minority carrier diffusion length and lifetime, trapped charge density and energy distribution etc.

The results of study at room temperature in the air of influences of the nonresonant absorption of microwave electromagnetic radiation by coal samples of different masses in the center of H102-resonator on the electron spin resonance (ESR) signal of a standard sample (spin label) of a ruby crystal, permanently mounted on the side wall of the resonator, are presented. Quantitative evaluation of the microwave conductivity of the studied coal samples based on the ESR measurements of ruby are made. Results can be applied for monitoring of electrical parameters of coals in the microwave range.

To determine the structural state of the metal as an informative parameter the structural acoustic noise is proposed. The paper represents the experimental results of the use at acoustical structural noise for the determination at the structural state of carbon pipe steels exposed by heat treatment, corrosion and tensile loads. The effect of grain size, corrosion and tensile loads on the level of structural noise is discussed.

The analysis of the standards regulating measurement of calorific value for solid and liquid fuels is made, and problems of application of new documents are considered. The bomb isoperibolic calorimeter BIC 100 (Belarus) having metrological characteristics at level of the best foreign analogues is presented.

The proposed article about debugging method of control systems using mathematical modeling is the combined use of algorithms for debugging control systems and mathematical modeling in a single algorithm of debugging. For this transformation is proposed to produce changes in the control program for the PLC in order to use in mathematical modeling. In Matlab Simulink, using Object Linking and Embedding for Process Control (OPC)  toolbox tools libraries of commonly used actuators (pumps, heaters, valves, valveand etc.), developed by the author – create a system to link the work of the PLC simulator system and mathematical modeling in Matlab Simulink in real time. In the result of manipulation we get new algorithm exactly the same as the real mode and allows control systems to simulate operation of the plant, together with PLC based control system. The results of test shows the applicability of such techniques of configuration and test software and hardware complex, and the use of OPC technology allows to apply this technique to a large number of manufacturers of control systems.

The results of development of multi-frequency phase method of measuring distances are shown. The results of the passage of harmonic probing signals in probing the objectives are shown. Obtaining the mathematical model describing the relationship are shown. The mathematical transformation of the system of equations relating the complex amplitudes of the sum harmonic signals and complex amplitudes of the signals reflected from each object, the result of which there is a polynomial equation to obtain. Solution of the polynomial equation gives the values of the vectors of the signals which reflected from each goal.

In article the applied aspects connected with use of a procedure of definition and record of a pose of the person for the analysis of biomechanical and physiological features of performance of power exercises with use of special simulators are considered. On the basis of carried out research the concept of frictional power simulators with many amounts of freedom is offered and realized.

Probabilistic approaches in information theory and information theory of measurement, allowing to calculate and analyze the amount expected to models measuring conversions and encoding tasks random measurement signals were considered. A probabilistic model of diagnostic information model transformation and diagnostic procedures was developed. Conditions for obtaining the maximum amount of diagnostic information were found out.

Existing methods of indirect methods of electrical parameters of two-terminal elements determination exhibit a substantial limitation. Such parameters as resistance, inductance and capacitance are determined by means of current, voltage, power etc. measurement and calculation with relevant formulas. Accuracy of these procedures is lowered by internal impedance of applied meters. In the paper there are proposed few modifications of well-known indirect methods aimed at elimination of their errors.

The paper describes the electronic work function measurements by the contact potential difference technique, and experimental demonstration of the possibility of their application for the monitoring of the friction surface. The techniques of tribological studies using contact potential difference probes are developed. Examples of measurements work function during friction for the bronze and steel samples are present. The study work function directly in the process of friction possible to determine the modes of friction and dynamics of defects on the surface friction, identify spots of destruction on local microroughnesses.