Autor: Zieliński, J. B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The silting-up prevention in the geothermal absorbent openings of Geothermal Energy Plant Pyrzyce
Autorzy:: Noga, B.
Marjanowski, J.
Biernat, H.
Kulik, S.
Zieliński, B.
Nalikowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/184948.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: energia geotermalna
absorpcja
geothermal energy
absorption openings
silting-up
soft acidising
super soft acidising
Opis:: The paper presents precipitation results from cold thermal water deposits that are the main cause of clogging in absorbent geothermal wells and borehole areas. As a result of physical and chemical analysis, laboratory tests and observation of the operation of a geothermal installation, a new method was developed to prevent the precipitation of sludge from cooled thermal water. The method being a modification of soft acidising was tentatively named as a super soft acidising method.
Źródło:: Chemical and Process Engineering; 2014, 35, 2; 205-216
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A hybrid (hydro-numerical) circulatory model: investigations of mechanical aortic valves and a numerical valve model
Autorzy:: Kozarski, M.
Suwalski, P.
Zieliński, K.
Górczyńska, K.
Szafron, B.
Pałko, K. J.
Smoczyński, R.
Darowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/202199.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: biological and mechanical heart valves
numerical heart valve
hybrid (hydro-numerical) circulatory model
voltage-controlled hydraulic pressure (flow) source
hydraulic input impedance
varying-elastance left ventricle
Opis:: In most cases of diseased heart valves, they can be repaired or replaced with biological or mechanical prostheses. Biological prostheses seem to be safer than mechanical ones and are applied with good clinical outcomes. Their disadvantage, when compared with mechanical valves, is durability. In the development and application of mechanical and biological heart valves, a significant role can be played by a Hybrid (Hydro-Numerical) Circulatory Model. The aim of this paper is to demonstrate the opportunities created by the hybrid model for investigations of mechanical heart valves and their computer models under conditions similar to those of the circulatory system. A diode-resistor numerical valve model and three different design mechanical aortic valves were tested. To perform their investigations, computer applications were developed under RT LabView to be run on a PC. Static and dynamic characteristics of the valves were measured and registered - pressure in the numerical time-varying elastance left ventricle (pLV), in the aorta (pas) and flow (f), proving, among other factors, that 1) time delay of pas with respect to pLV is mainly related to the valve’s opening time, and 2) the valves of substantially different designs tested under identical hydrodynamic conditions reveal nearly the same dynamic performance.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 605-612
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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