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Abstract

The energy strategy of Ukraine until 2035 forecasts that 12% of energy production will be from biomass. Currently, the share of biomass energy in the total structure of energy supplies in Ukraine is only 2%. After the Russian invasion of Ukraine, the diversification of the energy sector became extremely important. Rising fuels prices, problems with the fuel supply and the availability of agricultural biomass make biofuels an attractive alternative to fossil fuels. Ukraine has the potential to develop the production and use of all types of biofuels: solid, liquid and gaseous. Currently, the existing capacity and feedstock potential of biofuel production in Ukraine have not been fully realized. The experience of leading countries in the field of biofuel production shows that at the basis of the governments’ growing commitment to developing the biofuel sector is a desire to diversify the energy supply, create new jobs, improve energy security and reduce carbon dioxide emissions and other gases that contribute to global warming. The aim of the study is to construct the theoretical and practical principles of the implementation of the strategy for biofuel production from agrobiomass in Ukraine. We came to the conclusion that the trigger for the development of the bioenergy industry is the adoption at the state level of the strategy for the production of biofuels from agrobiomass. The implementation of the strategy for biofuel production will help to increase the production and use of biofuels that will strengthen Ukraine’s energy sector, help to stabilize fuel prices and will have a positive impact on the economic development of the country.
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Authors and Affiliations

Natalia Pryshliak
1
ORCID: ORCID
Lyudmila Pronko
1
Kateryna Mazur
1
Yana Palamarenko
2
ORCID: ORCID

  1. Management and Law, Vinnytsia National Agrarian University, Ukraine
  2. Economy and Business, Vinnytsia National Agrarian University, Ukraine
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Abstract

Sixteen samples were designed for analysis (hard coal, aggregate – barren rock, hard coal sludge). The total mercury content and the amount of mercury leaching were determined. The percentage of leachable form in the total content was calculated. The studies were carried out under various pH medium. The leachability under conditions close to neutral was determined in accordance with the PN EN 12457/1-4 standard. The leachability under acidic medium (pH of the solution – approx. 3) was determined in accordance with principles of the TCLP method. The mercury content was determined by means of the AAS method. For hard coal the total mercury content was 0.0384–0.1049 mg/kg. The level of leaching on mean was 2.6%. At the acidic medium the amount of leaching increases to an mean 4.1%. The extractive waste of aggregate type features a higher total mercury content in the finest fraction < 6 mm (up to 0.4564 mg/kg) and a lower content in the fraction 80–120 mm (up to 0.1006 mg/kg). The aggregate shows the percentage of the leachable form on mean from 1.4 to 2.2%. With pH decreasing to approx. 3, the amount of leaching grows up to mean values of 1.7–3.2%. Coal sludge features the total mercury content of 0.1368–0.2178 mg/kg. The percentage of mercury leachable form is approx. 1.8%. With pH decreasing the value increases to mean value of 3.0%. In general, the leachability of mercury from hard coals and extractive waste is low, and the leachability in an acidic medium grows approx. twice. Such factors as the type and origin of samples, their grain composition, and the pH conditions, have basic importance for the process. The time of waste seasoning and its weathering processes have the greatest impact on increasing the leaching of mercury from the extractive waste.
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Authors and Affiliations

Beata Klojzy-Karczmarczyk
1
ORCID: ORCID
Janusz Mazurek
1
ORCID: ORCID

  1. Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland
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Abstract

Simultaneous interpreting is believed to be the most constrained type of translational activity. Constraints that distinguish simultaneous from other modes of interpreting (i.e. consecutive and liaison), and their written counterpart are manifold. The factors most often referred to in literature are: substantial temporal pressure and limited short-term or working memory capacity. Moreover, owing to virtual simultaneity of the input reception and output production, an interpreter’s receiver and sender roles over-lap in time. Another major problem is the lack of revision phase – an interpreter’s ou-tput is always the fi rst and the only draft of the text. Numerous accounts also stress the potentially adverse effects of the linearity constraint (e.g. Hatim and Mason 1997, Set-ton 1999), an issue we shall explore in the present paper. The discussion is set within the framework of Hatim and Mason’s model of textuality domains in interpreting.

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Authors and Affiliations

Ewa Gumul
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Abstract

The subject of this paper is a real stabilising and tracking control system-namely, the tank gun horizontal stabiliser. The simulation investigations of the influence of regulation potentiometers settlings on stabilisation exactness and transient processes quality were carried-out using a verified mathematical model of the system. The author analysed the possibilities of improving performance characteristics of the stabiliser via altering of feedback's gain coefficients as well as the influence of disturbing inputs amplitude and frequency (propagated from the hull on the gunturret) on stabilisation exactness of a given position. In the result of model investigations, it was found that it would be impossible to improve significantly the stabiliser performance quality with its present structure. For this reason, one investigated the possibilities of adding new feedbacks and their influence on the stabilisation quality. The introduced feedbacks improved performance parameters of the stabiliser by about thirty to fifty percent.
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Authors and Affiliations

Krzysztof M. Papliński
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Abstract

The last decades, when robots have appeared in the operating room, showed the possibility of surgery enhancement by improving precision, repeatability, stability and dexterity. However, taking into consideration still existing limitations of robotics in surgery, and treating the robots as medical devices with the highest degree of safety level requirements, one must take a number of complex actions when preparing the experimental clinical application of a new modern robot Robin Heart. Presented paper describes the current state of procedures carried out in the Robin Heart project of surgery robots prepared for clinical application. Based on experiences with the devices existing on the market and, first of all, thanks to knowledge and expertise gained by our team during last 12 years, intensive work are currently done in order to introduce both mechanical and electronic modifications as well as to improve the safety system. As far as human resources are concerned, a professional team able to carry out the robot-supported surgery is prepared based on the created system of technical and functional trainings on simulation stands, which also includes the developed operation planning procedures. The first telemanipulator designed for clinical practice is the Robin Heart Vision – endoscopic system manipulator.

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Authors and Affiliations

Zbigniew Nawrat
Paweł Kostka

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