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Content available remote Physical and mechanical properties of nanostructured (Ti-Zr-Nb)N coatings obtained by vacuum-arc deposition method
Pogrebnjak A., Maksakova O., Kozak Cz., Koltunowicz T. N., Bondar O., Drozdenko A., Petrov S., Erdybaeva N. K., Eskermesov D., Grankin S.
Przegląd Elektrotechniczny
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2016
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R. 92, nr 8
180--183
EN
By vacuum-arc evaporation of multielement Ti+Zr+Nb cathode in nitrogen atmosphere, (Ti-Zr-Nb)N coatings have been deposited on steel substrates. The coatings are characterized by a columnar structure with nanosized (10-63 nm) crystallites of the main FCC nitride phase (Ti-Zr-Nb)N. Such coatings seem to having prospects as protective ones for couples of friction and cutting tools.
PL
Metodą próżniowo-łukowego osadzania z katod systemu Ti+Zr+Nb w atmosferze azotu otrzymano powłoki na podłożach (Ti-Zr-Nb)N. Powłoki charakteryzują się słupową strukturą z nanowymiarowymi (10-63 nm) kryształami w podstawie których jest FCC faza azotku Ti-Zr-Nb)N.
2
Content available Using Pontryagin maximum principle for parametrical identification of ship maneuvering mathematical model
Udin U., Pashentsev S., Petrov S.
Transport Problems
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2014
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T. 9, z. 2
11--18
EN
This article proposes usage of Pontryagin maximum principle for parametrical identification of mathematical vessel’s model. Proposed method has a special perspective for identification in real time mode, when the parameters identified can be used for forecasting of coming maneuvers
RO
В статье предложено использование принципа максимума академика Л.С. Понтрягина для параметрической идентификации математической модели судна. Предложенный способ особенно эффективен при идентификации в реальном масштабе времени, когда идентифицированные параметры могут использоваться для прогнозирования ближайших маневров.
3
Content available Kinematics of reference height network on the territory of Rivne NPP
Tretyak K., Petrov S., Bokhonko S., Babiy L., Shpakivskyy O.
Reports on Geodesy and Geoinformatics
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2014
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Vol. 96
55--66
EN
Rivne Nuclear Power Plant (NPP) is located in western Ukraine. Construction of the station began in 1976. Totally four power generating units are operating on the station. Complicated geological conditions and display of man-made karst led to the need for monitoring of sediments and deformations on Rivne NPP. Since 1984 on the Rivne NPP there were conducted geodetic observations on the conditions of height reference network consisting of nine deep fixed reference points, which are installed in basaltic rocks. Totally 110 cycles of observations were conducted. The heights of fixed reference points were determined by leveling of I-st class. It is necessary to assess the kinematics of the reference height network and implement zoning of station territory according to a speed of inclination of the earth's surface. An average annual rates of displacement which appear as a linear trend weredetermined on the results of measurements for each fixed reference point by the least squares method. Excluding these values the vertical displacements of fixed reference points were derived and only the periodic component that is changing according to the periodic law remained present there. For each fixed reference point it was determined amplitude and optimum oscillation period and the coefficients of regression equations. Using the annual velocity of displacement of fixed reference points it was done the zoning of the Rivne NPP. There were allocated areas, which were characterized by different rates of inclinations and frequency of oscillations.
4
Content available remote The plasma technologies for the processing of carbon containing raw materials
Borysenko M., Lelyukh M., Petrov S., Zhovtyansky V., Chernets O., Korzhyk V., Marynsky G., Kostash S., Popov V.
Prace Instytutu Nafty i Gazu
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2009
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nr 162
52-57
EN
The electric arc plasma equipment allows to reach the extreme temperatures in any technologies of carbon containing raw materials processing into gaseous products. In this connection our institutions carried out the environment-friendly technology and equipment for air and steam plasma gasification of medical waste as well as household waste or any other carbon containing raw materials. This technology guaranties destruction of thermally-stable bacteria and excludes the formation of dioxins and furans. The gaseous products, to be obtained in this process, may be used as alternative fuel or starting material for synthetic liquid fuels production. The modern level of prices on fuels and energy supply make it economically attractive. The technology of alternative fuel production may be considered automatically as environment-friendly one as it was developed from the equipment for destruction of medical waste.
5
Content available remote Metrologihchne zabezpechennja v Ches'kihjj Respublihcih na prikladih Naukovo-doslihdnogo ihnstitutu geodezichnogo, topografihchnogo ta kartografihchnogo (Zdihbi bihlja Pragi, Ches'ka Respublihka
Petrov S.
Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska
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1998
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z. 29 [166], T.2
381-384
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