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  • The main problems and prospects of development of agriculture of the KBR

    The article highlights main problems of agricultural development of KBR and basic measures of their solution. The necessity of state support of agriculture as a natural condition for the functioning of this industry is also justified.

    Keywords: agriculture, government support, endogenous and exogenous factors, innovation development, technology

  • The use of provocative tests with application of nonlinear dynamics methods for optimization of the method of cardiointervalografia when assessing rhythmic activity of the heart in patients with impaired glucose tolerance

    Infringements of variability of an intimate rhythm in a combination to attributes of electric instability of a myocardium are one of factors of diabetic heart.

    Keywords: arterial hypertensia, diabetic heart, variability of an intimate rhythm.

  • Research of tool life of a tungstenless hard alloy metal on the basis of carbide of the titan in the conditions of cutting

    The results received at research of influence electron beam treatment processings on tool life of a tungstenless hard alloy metal on the basis of TiC with a binding material an alloy Ni-Cr-Al and percentage of the components "basis-binding" 50 – 50% about are presented in the conditions of metal cutting. Influence electron beam treatment of a blanket of samples of the cutting tool insert on technological components of force of cutting when turning cut metal is experimentally revealed.

    Keywords: Surface coating, hard alloy metal, structural and phase modification, electron beam treatment, tool life, metal cutting, wear, technological components cutting force

  • Determining the requirement of vehicles and special technics for transport units in the pipeline industry

    An analysis of science researches and production experience have shown that there is a need in the method of determining the number of vehicles and special technics for transport units in the pipeline industry. Decided to consider the system of transport and technological service of pipeline's repair processes as queuing system. A simulation method as a tool for determining the need of vehicles was chosen. The correlation between factors of primary production and the number of vehicles and special technics was determined.

    Keywords: oil pipeline, car, special equipment, vehicle, demand for vehicles, modeling, quantity of technics, standardization, technical maintenance of cars

  • Design of CMOS op-amp at 1 V

    Problems for the design of low-voltage CMOS op-amps are considered: low voltage headroom for signal swings, increase the swing of input and output common-mode signal and sustainability when the feedback. Ways to implement input and output stages of low-voltage CMOS op-amps for technology 0.13 um at 1 V are investigated. The ways of frequency compensation are investigated. According to the results of modeling the best gain and the largest swing of input and output signal have continuous in time common-mode feedback circuit (CMFB) and the proposed two-stage current mirrors op-amp. These op-amps can be applied at a supply voltage ~ 1 V.

    Keywords: low-voltage CMOS operational amplifiers (op-amps), the input and output swing, miller-effect frequency compensation

  • Method of assessing coefficient of heterogeneity mixtures of granular materials

    Developed a rapid method for evaluation of the homogeneity of mixtures hardly separated granular materials, the analysis of which is the use of known methods is impossible or time-consuming. The method is based on the separation of mixture components by color using computer processing of pictures of her samples. To implement the developed computer program that can calculate the values of the coefficient of heterogeneity of the mixture, as well as other dispersion parameters.

    Keywords: express method, the concentration of the mixture, component, granular material, image, distribution, shade of gray, the coefficient of heterogeneity

  • The definition of the curves of hardening and formability diagrams of components of composite superconductors

    The peculiarities of formation of mechanical properties of composite superconducting tyre during its rolling. To determine the intensity of the tangential shear stresses, intensity of deformation and microhardness for all components of the tire of the proposed method of research. The results can be used to determine the power parameters of rolling and determine the conditions of rolling without breaking.

    Keywords: The intensity of the tangential shear stresses, the intensity of deformation microhardness

  • Comparative evaluation of changes in reliability of methane-diesel and diesel cars, depending on seasonal conditions

    The paper presents the results of a study on the influence of seasonal conditions on the reliability of diesel and gas diesel vehicles. During the experiment were treated with statistical data on the failure of the two groups of trucks, methane-diesel and diesel operated under the same conditions. As a result of analysis found seasonal variations in the flow of failures between the two groups. Then the failures were divided into failures of components and assemblies cars such as engine, transmission gear and chassis of cars. This division has revealed the influence of seasonal conditions on the reliability of components and assemblies of diesel and gas diesel cars and their differences. Studies have shown the need for adjustment of norm in the planning of maintenance and procurement of spare parts for gas diesel vehicles.

    Keywords: Stream failure, gas equipment, seasonal conditions, the reliability of vehicles, maintenance and repair

  • Simulation of parallel operation of three-phase distribution transformers

    Modeling of parallel operation of distribution transformers with thyristor voltage and powe regulator are considered here. Models are made in Simulink. Structural model of parallel operation of two three-phase transformers is presented. Model allows us to study electromagnetic processes at phase by phase control.

    Keywords: three-phase transformer, parallel operation of transformer, simulation, Simulink.

  • Elements of geotechnical monitoring of underground constructions, enshrined concrete anchors

    There was a need for geotechnical monitoring during construction of underground facilities. The organization of monitoring control tensile forces in the concrete anchors. Comparison of experimental and calculated data, which revealed that the deviation does not exceed 19%. When using anchor embedment length limited in a large range of conditions in a rod anchor having critical internal forces. To increase the efficiency of anchors in their construction can be used in flexible elements of the anchor bolt assembly.

    Keywords: underground construction, monitoring, anchor well, tensile forces, the bearing capacity, the compliance node

  • Theoretical and experimental bases of assessment of the arched part transport tunnels using the method of acoustic resonance inspection

    The article presents the main results of theoretical and experimental research in the field of non-destructive testing and forecasting of geomechanical condition of the arched part of the transport tunnels. It has been shown that this goal can be to apply a method of acoustic resonance inspection. Methodology Research was registering the resonant response of the layered rock mass to impact mechanical excitation of an acoustic signal. Initiation and receive elastic vibrations produced in the lower layer of the breed. These technical and economic parameters allow to recommend Geophysical prediction described underground geophysical methods for wide industrial use during transport tunnels

    Keywords: geomechanical state geological environment, the array, evaluation, arched part, the transport tunnel spectrum, acoustic resonance inspection, prognostication, control, forecast, weakened mechanical contact

  • Scientific organization of labor as a factor of increasing the efficiency of agricultural enterprises

    This article provides the background necessary to use the basic principles of scientific organization of labor as one of the main factors of internal efficiency improvement of production activities of the enterprises. Set forth in article a brief history of the emergence of the scientific direction and the peculiarities of agricultural production left no doubt as to the necessity of implementation in the process of organizing the production of scientific organization of labor.

    Keywords: scientific organization of labor, scientific management, standardization of labor, stimulation of labor, delegation of authority, communications

  • Modification of Pan-Thompkinson’s real-time QRS detection algorithm

    The article discusses the Pan-Tompkins algorithm to detect QRS complexes in real time, when applied to a PC for analysis of records not in real time and pre-recorded. QRS complexes detection algorithm was published Dzhiapu Pan and J. Willis. Tompkinson in the journal IEEE Transactions on biomedical engineering, vol. BME-32, NO. 3 in March 1985. The algorithm has been designed for use in real time. Pan and Tompkinson developed an algorithm for real-time detection of QRS complexes of ECG signals. Algorithm for QRS complexes reliably recognize, by analyzing the inclination of the complex amplitude and width. Special digital bandpass filter reduces the number of false detections caused by different kinds of interference present in the ECG signal. This filtering allows the use of low detection thresholds, thereby increasing the sensitivity of detection. The algorithm automatically adjusts thresholds and parameters periodically to adapt to such changes ECG QRS morphology and as the heart rate. For standard recording duration 24 hours from the database MIT / BIH arrhythmia database, this algorithm correctly recognized 99.3 percent QRS complexes. However, this time the algorithm is rather outdated, as it was designed for computers that time. With certain modifications and current capabilities, parameters can improve the quality and speed of analysis. A modified version of the algorithm has been developed for use in the client software mobile multifunctional hardware-software complex and long-term cardiac monitoring ergonometrii. Better and more precise analysis of QRS complexes in the signal more accurately assess the state of the cardiovascular system of the person, which is an important factor in the treatment and diagnosis of heart disease in the early stages.

    Keywords: ECG, accurate analysis, detection of QRS, algorithm Pan-Tompkinson, cardiovascular system.

  • Preparation and study of the optical properties of arrays of Au nanoparticles on the surface of thin films of ZnO

    Research of possibility of management of morphological parameters of arrays nanoparticles Au (form, the size, density of superficial distribution) of the thin films of ZnO received on a surface by method of the pulse laser deposition (PLD) with subsequent annealing in the inert atmosphere was conducted. It was experimentally established that increase of the average size of Au nanoparticles leads to the plasmon peak broadening and its shifting to the red region. Nanoparticles with diameters 17, 25, 31, 37 and 40 nm have plasmon absorption maximums at wavelengths 570, 590, 605, 610 and 620 nm, respectively. With the increase of the average nanoparticle size nm to a certain value rise of maximum in absorbtion spectra at wavelengths 570, 590, 605 and 610 followed by its decrease at 620 nm is observed. The highest value of the intensity at/in the absorption maximum corresponds to the average diameter of the nanoparticles of 37 nm. Optimal conditions for synthesis of isolated arrays of Au nanoparticles on the surface of ZnO thin films with high maximum of plasmon absorption were experimentally found. Obtained results can be used to increase the sensitivity of the photodetectors and solar cells based on zinc oxide or chemosensors based on Raman amplification effect near the gold nanoparticles.

    Keywords: nanoparticles of Au, arrays of isolated nanoparticles, plasmon resonance, a photodetector, photosensitivity, ZnO film

  • Multilevel system of distributed control smart grid

    Recently becoming urgent problem of managing distributed processes of production, transmission and consumption of energy. This fact is associated with the emergence of a significant number of generators and the possibility of a primary control on all elements of the grid. In this connection, in proposed three-level distributed power grid management, which includes the upper level of segmentation networks, distributed control average frequency and power level and a lower primary control. The methods of control for each of the above levels, the results of simulation.

    Keywords: smart grid management system, distributed control, frequency control and power.