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  • Development and design of bimorph thermal actuator and а micromirror based on it

    A design of the actuator, consisting of a thin layers of silicon dioxide and aluminum is proposed. There are calculations made of the response speed and heat dissipation of the actuator. By making the best selection of layer thicknesses and optimization stages of technological process, in particular the deep selective etching of silicon, the best performance on the angle of inclination of the actuator and the speed of the device could be achived. The greater the difference between the initial temperature and the heating temperature, the stronger the beam of the actuator is lowered to the plane of the silicon plate, and, therefore, less angle of elevation above the surface of the silicon plate. It is thus possible to control the angle of the beam by selecting the appropriate heater and voltage, providing the desired temperature. The design of the micromirror device based on the proposed actuator is provided. The developed design is based on the actuator and allows for controling the tilt of the mirror in a wide range.

    Keywords: silicon, termoactuator, micromechanical systems, bimorph structure, micromirrors

  • Mobile complex for comfortable control of condition of seriously ill bedridden patients

    In the article is examined a hardware program complex on the basis of original sensors of power. This complex makes possible to register breath, pulse and locomotor activity of seriously ill bedridden patients and patients in coma without direct skin contact of sensors and patient for comfortable monitoring. The results of engineering tests are given. The exceptional indicator of system is a load capacity equal to or more than 500kg under the minimum grade value 10 gr. for every sensor. In the paper is demonstrated an availability of this complex for clinical medicine, computer stabilography, polysomnography and top level sport. In conclusion are pointed goals for further development of this complex.

    Keywords: Stabilegraphy, polysomnography, strain-gauge-type power sensor, sport, comatose state

  • Modern status of the groundwater in the area of industrial cities Rostov region

    Reviewed the status of groundwater in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinskiy. Identified the main sources of their pollution and priority pollutants. The causes of expansion spots dirty waters in the areas of industrial cities, education depression funnels. The conclusion about influence of a large number of technogenic factors on the change of the status of groundwater  

    Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution, water objects.

  • Municipal solid waste management system using the GIS-technologies

    Solid waste management is one of the most important and complex international issues. Administration of the city of Rostov-on-Don has developed a new strategy for the creation of a system of waste recycling. For its success must enter a single system to manage solid waste using geographic information systems. This problem has become more important due to the increased amount of waste, complexity and interdisciplinary nature of the problem. Rapid globalization and urbanization have increased the number of solid waste, which is currently in landfills in many countries. Emissions and leaching of chemicals or toxic substances into groundwater leads to environmental pollution. In recent years, a growing scale of environmental degradation has led to the formulation of numerous initiatives, conventions and conferences, and stringent laws and statutes throughout the world.

    Keywords: Municipal solid waste management, GIS-technologies, Sustainable development, Separate collection, Recycling

  • Selective growth of ZnO nanorods arrays by hydrothermal method on silicon

    In the present work we have carried out studies of the processes of growth of zinc oxide nanorods by hydrothermal method on silicon substrates. As sublayer catalyst used growth caused by laser deposition of zinc oxide, various thicknesses. Studied selective growth of nanorods on the microstructure of thin-film sub-layers of zinc oxide obtained by laser deposition. The optimal conditions for the synthesis of: the concentration of Zn (NO3) 2 - 0.4 mol / l, hexamethylenetetramine - 0.4 mol / l, the concentration of NH3 · H2O - 0,01 mol / L -0.01, process time 4:00, the process temperature is 80 ° C. Sublayer thickness of zinc oxide, as shown by experiment, the growth of the rods has no noticeable effect. Oriented arrays of nanorods were obtained up to 500 nm and a diameter of 60-150 nm.
    Keywords: zinc oxide nanorods and micro-oriented arrays of nanorods, hydrothermal synthesis method, selective growth, thin film underlayer.

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