Autor: Polacek, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Novel Applications of Bistable Magnetic Microwires
Autorzy:: Sabol, R.
Klein, P.
Ryba, T.
Hvizdos, L.
Varga, R.
Rovnak, M.
Sulla, I.
Mudronova, D.
Galik, J.
Polacek, I.
Zivcak, J.
Hudak, R.
Powiązania:: https://bibliotekanauki.pl/articles/1032633.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Kj
75.60.Jk
Opis:: Few examples of technical and biomedical applications of bistable magnetic microwires are shown. Particularly, application of microwires in civil engineering are shown for sensing the mechanical stress in concrete, steel structure or steel cable by simple gluing it on the surface of studied structure. On the other hand, biomedical applications for sensing the stress, temperature, and position inside the human or animal body are shown. Experiments with pig intestine cells points to the biocompatibility of glass coated microwires.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 1150-1152
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the hazards of the BAZALY football stadium in Ostrava in terms of environmental impact
Autorzy:: Bujok, P.
Klempa, M.
Pospíšil, P.
Rado, R.
Porzer, M.
Ryba, J.
Bláha, M.
Poláček, A.
Powiązania:: https://bibliotekanauki.pl/articles/298663.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: geohazard
mining fields
Silesia
methane migration
natural environment
liquidated mines
concentrations of semimetals
concentrations of heavy metal
methane dioxide surface screening
carbon dioxide surface screening
ERT method
GPR method
monitoring boreholes
drilling technology
Opis:: The term ‘geohazard’ is used to describe the natural and anthropogenic phenomena and processes taking place in the natural environment in the context of their negative influence on natural environment, including the geological one. The degree of geohazard is frequently evaluated on the basis of catalogued descriptions (activity of natural environment and human impact), which help identify particular hazards and ascribe them their value. According to Czech standards, 45 geohazards have been classified and described in detail in view of: geological knowledge, origin and way in which the hazard was evoked, geographical range, time, associated processes, social aspect and monitoring methods. Research works were conducted in a football stadium located in an area of underground hard coal extraction and surface production of raw minerals. The BAZALY stadium, where FC Banik Ostrava played its matches, is located in Ostrava in an area of former mining fields of Silesian Ostrava. These coal mines were closed in the 1990s, but even so they still create environmental hazards. The paper is devoted to research works and risk analysis of the environmental impact of mining activities, old workings and liquidated mines in terms of geohazard. The basic geohazard in the stadium area is methane migration from tectonically disturbed rock mass, also caused by incorrectly closed workings. Another hazard is associated with the increasing mining damage, i.e. tectonic movements, subsidence, local sinkholes, lowering groundwater level etc.
Źródło:: AGH Drilling, Oil, Gas; 2017, 34, 4; 933-943
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A method of identification of complex cutting forces acting in unstable cutting process
Autorzy:: Bach, P.
Polacek, M.
Chvojka, P.
Burian, D.
Drobilek, J.
Powiązania:: https://bibliotekanauki.pl/articles/99872.pdf
Data publikacji:: 2014
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: chatter
stability inaccuracy
complex cutting forces
forces identification
Opis:: The calculations of machining stability limit currently known do not provide a precise prediction of chatter-free cutting conditions. The inaccuracy is probably caused by mathematical models of dynamic forces acting on the cutting process during unstable machining. These models need to be modified. A new analysis of experimental data measured by one of the authors, M. Poláček, in the 1968-1974 period, forecasted an existence of several dynamic forces, which are mutually phase-shifted, thus complex. This fact has not been thoroughly investigated previously. As the assumed forces cannot be calculated from any equations, they must be identified experimentally. This research paper proposes a theoretical method of an experimental identification of these forces. The new model is intended to be used in the future for the development of a more accurate calculation of stability diagram.
Źródło:: Journal of Machine Engineering; 2014, 14, 4; 18-28
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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