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Wyświetlanie 1-15 z 35
Tytuł:
Numerical and experimental investigations on self - ignition process of hydrogen gas release
Autorzy:
Jach, A.
Rudy, W.
Dąbkowski, A.
Teodorczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/244273.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrogen release
hydrogen safety
hydrogen self-ignition
AVL Fire
Źródło:
Journal of KONES; 2013, 20, 3; 185-192
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen as an engine fuel-some pros and cons
Autorzy:
Karim, G. A.
Powiązania:
https://bibliotekanauki.pl/articles/244293.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
alternative fuel
hydrogen
combustion engines
hydrogen combustion propertied
Opis:
Review is made of the positive features and the current limitations associated with the use of hydrogen as a spark ignition engine fuel. It is shown that hydrogen has excellent prospects to achieve very satisfactory performance in engine applications that may be superior in many aspects to those with conventional fuels. A number of design and operational changes needed to effect the full potential of hydrogen as an engine fuel is outlined. The question whether hydrogen can be manufactured abundantly and economically will remain the limiting factor to its widespread use as an S.I. engine fuel in the future. Hydrogen needs to be manufactured, hydrogen, storage, portability and transport, some relevant properties, hydrogen fuelled engine applications, hydrogen as an engine fuel, some positive features of hydrogen for engine applications, some limitations associated with hydrogen engine applications, measures for improving the operational features of SI hydrogen engines, and liquid hydrogen, comparative properties of hydrogen to methane and iso-octane, as well combustion properties are presented in the paper. The question of whether hydrogen can be obtained abundantly and economically remains yet to be answered satisfactorily.
Źródło:
Journal of KONES; 2007, 14, 4; 153-164
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen combustion in the supercharged SI engine
Autorzy:
Grab-Rogaliński, K.,
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/246524.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrogen
knock
supercharged engine
Opis:
The experimental results of combustion pressure processing from a supercharged spark ignition (SI) engine that was running on hydrogen are exposed in the paper. Hydrogen was delivered in two ways by an injector and mixer installed in an intake port. In-cylinder pressure while combusting hydrogen was analyzed with various coefficient of stechiometry and boost pressure. These parameters were limited by abnormal combustion known as "knock" combustion. Hydrogen fueled engine has tendency to generate "knock", especially this abnormal combustion phenomena increases with increase in boosting pressure. Hence, the thermodynamic parameters such as pressure and temperature of fresh air fuel mixture are elevated. The experimental numeric data analysis permit for compare to naturally aspirated engine such parameters as mean indicated pressure, indicated efficiency. Also for both cases, the coefficient of variation for mean indicated pressure was determined. It was found that combustion duration shortens itself with higher boosting pressure. Thus, optimal spark timing to get the maximum indicated mean effective pressure is shifted closer to the TDC. Another parameter that was expected to be increased was the knock intensity. It was observed, that knock intensity did not increase significantly and was still below the limit for pressure pulsations treated as combustion noise coming from light combustion instabilities.
Źródło:
Journal of KONES; 2012, 19, 3; 149-155
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic cycle of combustion engine with hydrogen fuelling
Autorzy:
Sroka, Z. J.
Powiązania:
https://bibliotekanauki.pl/articles/246368.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
thermodynamics
hydrogen
Opis:
Shortage of crude oil gives the reason to look for any alternative engine fuel. One of them is the hydrogen, which will be the most lean fuel between others. Knowledge of hydrogen as an engine fuel, its properties, production and storage problems were analyzed in this paper. At the end own hydrogen concept based on Fiat engine 900ccm was shown. Theoretical comparison between thermodynamic cycles for engine run on conventional petrol and hydrogen was done. Results have given the green light to future development. Petroleum recourses run out have given the reasons to find alternative fuel. One of them could be hydrogen. According to analyze done in the project it can be found similarity between hydrogen engine with 1=1,0 to petrol engine with 1=0,9. Pressure of hydrogen charge is in this case higher of 0.42 mpa and there is calculated in strength of existing engine. The results of estimation show possibility to use hydrogen as a engine fuel, maybe first as a dual-fuel engine like LPG system. Emissions of nox for hydrogen engine as well as theoretical engine work cycles for analyzed cases are illustrated in the engine.
Źródło:
Journal of KONES; 2007, 14, 3; 573-578
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cost analysis of hydrogen energy generation
Autorzy:
Grab-Rogaliński, K.
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/247356.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrogen
production
costs analysis
Opis:
Relatively high energy costs and the perspective of running out fossil fuel natural resources stimulates scientists and engineers all over the world to concentrate their efforts on inventing new sources of energy. For decades, hydrogen technology is considered as source of renewable energy. Hydrogen can be used both as the energy carrier as far as substrate in the chemical industry. Plans for hydrogen utilization as the fuel applied to automotive engines also is under investigation. Lot of works describing various technologies for hydrogen processing have come into being, the ways of production and storing this substance have also been worked out. The important part in analysis is costs of applying fuels with respect to their impact on natural environment. As found, these costs are usually difficult to be estimated. In this paper, the main directions in development of hydrogen technologies were analysed concerning total costs for hydrogen processing. As concluded, overall costs of the technology for both hydrogen generation and electric power production are significantly higher with respect to costs for energy generation by coal-fired power plants. The hydrogen production costs characterized themselves with the highest share in overall costs at hydrogen economy, and they depend on technology development. It is expected that overall costs of production, transportation and storage of hydrogen should be remarkably reduced in short-medium term future because of development in: photovoltaic technology – that will contribute to reduce hydrogen production costs by electrolysis process. Additionally, it is expected to reduce costs for hydrogen storage.
Źródło:
Journal of KONES; 2014, 21, 3; 121-126
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effects of microstructural modification by mechanical milling on hydrogen desorption from magnesium hydride
Autorzy:
Varin, R. A.
Czujko, T.
Wronski, Z. S.
Calka, A.
Powiązania:
https://bibliotekanauki.pl/articles/243099.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automotive
hydrogen fuel for fuel cells
magnesium hydride
mechanical milling
hydrogen desorption
Opis:
Nanostructured hydrides fabricated by mechanical (ball) milling offer a promising alternative to hydrogen storage in compressed or liquid form. However, ball milling brings about both beneficial and detrimental effects to their hydrogen desorption characteristics. These effects have been studied in the ball milled magnesium hydride, MgH2. A beneficial effect is that the refinement of the hydride powder particle size and the gamma-MgH2 phase residing within the powder particles, acting additively, are responsible for a substantial reduction of hydrogen desorption temperature of MgH2 hydride. A detrimental effect is a reduction of the hydrogen storage capacity after nanostructuring of MgH2 by ball milling. Both effects are presented and discussed. In particular DSC hydrogen desorption curves at the heating rate of 4°C/min of the ABCR powder as received, milled in hydrogen for (a) 0.25 to 5h and (b) 10 and 20h and finally cycled, XRD patterns of MgH2 (Tego Magnan registered trademark) powders milled continuously for 100h, desorption curves under 0.1 MPa H2 at various temperatures of commercial MgH2 powder Tego Magnan registered trademark milled continuously for 20h are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 2; 529-536
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen rich gases combustion in the IC engine
Autorzy:
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/245372.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
syngas
coke gas
hydrogen
combustion
Opis:
Experimental results of combusting three different syngases in an internal combustion (IC) spark ignition engine are presented in this paper. The syngases used for tests varied each from the other with hydrogen content, which was of 10,15 and 60%. Other combustible gases as CO and CH4 were also changed. Thus, the lower heating value of the syngases was of 2.7, 4.6 and 17.2 MJ/nm3, respectively. Combustion tests were performed at stoichiometric ratio of syngas-air mixture, with variable spark timing and constant compression ratio of 10. On the basis of in-cylinder combustion pressure histories the indicated mean effective pressure (IMEP) was computed and presented versus spark timing and vs location of the middle combustion phase expressed by the 50% of mass fraction burned (MFB). Additionally, the 0-10% MFB and 10-90% MFB were also determined. Furthermore, the paper contains theoretical determination of the three fuel quantities, which can affect combustion duration and heat release rate during burning the syngases in the IC engine. They are as follows: laminar flame speed, ignition delay and adiabatic flame temperature. Final results does not show satisfactory correlation between LFS computed at NTP and real combustion phasing. Furthermore, both long combustion duration and long 0-10% MFB leading to unstable combustion were observed for the syngas with the lowest LHV of 2.7 MJ/nm3.
Źródło:
Journal of KONES; 2009, 16, 4; 447-454
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental research on influence of geometrical configuration on high pressure hydrogen outflow ignition process
Autorzy:
Oleszczak, P.
Mężyk, Ł.
Wolański, P.
Powiązania:
https://bibliotekanauki.pl/articles/245405.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
propulsion
safety
hydrogen
ignition
visual registration
Opis:
Hydrogen is regarded as a potential future fuel for various kinds of vehicles: fuel cell cars, trucks, buses etc. Storing and transportation issues are the crucial safety problems concerned with utilization ofhydrogen. Because of its very łów density hydrogen needs to be stored under very high pressure, in range of 35 division sign 70 MPa, and this create hazard of sudden discharge of hydrogen leading to ignition and severe accident. The aim of the presented research is an experimental investigation of hydrogen ignition as a result of a compression and heating of air by shock wave generated by the discharge of the hydrogen. Mixing of the air heated up by the shock wave and expanding hydrogen can produce combustible mixture of sufficiently high temperature and can lead to ignition. The critical conditions for ignition depend mainly on hydrogen discharge pressure, geometrical configuration, parameters of the ambient air, obstacles, etc. Experimental research -was conducted on a facility specially constructed in Combustion Laboratory, the Institute of Heat Engineering, Warsaw University of Technology. The facility consists from the pressure tank and high pressure hydrogen installation. To allow visualization the observation section is equipped with high quality optical windows. Schlieren visualization system and high speed digital camera was used to register high pressure hydrogen outflow and potential ignition. The high speed digital camera was used to take Schlieren or direct pictures of the process. Additionally, the experiment is registered with use of conventional digital camera. Experiments were conducted for different discharge pressure of hydrogen and outflow to "open space " as well to specially prepared obstacles. Critical condition for which ignition occurs were evaluated for both cases. The high speed Schlieren and direct pictures taken during the experiments are presented in the paper. The influence of presence of obstacles on the feasibility of hydrogen ignition during outflow from high pressure installation is discussed and analyzed.
Źródło:
Journal of KONES; 2009, 16, 4; 357-366
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative preliminary unit costs analysis of the operation of passenger cars with combustion engines and fuel cell vehicles powered by hydrogen
Autorzy:
Gis, Wojciech
Waśkiewicz, Jerzy
Menes, Maciej
Gis, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/241649.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
passenger cars
fuel cells
hydrogen
costs
Opis:
The article presents political and legal aspects regarding the recommendation for the development of hydrogen technology in the economy and in transport. The development of electric cars with hydrogen-powered fuel cells, which took place in recent years in the world, has been outlined. The principles of calculation of average vehicle operating costs applicable in the transport economics are discussed. The estimated average unit operating costs of a statistical passenger car using conventional energy carriers, estimated in the studies of the Motor Transport Institute are quoted. The assumptions and results of the estimation of the average cost per 1 vehicle-kilometre of the electric passenger car’s mileage (BEV) have been presented, as well as the assumptions and results of the estimation of the average unit operating costs of a hydrogen powered passenger car (FCEV). The average unit costs of the mileage of these vehicles have been compared. The predictions regarding the future changes in the average prices of FCEV vehicles have been cited and the average unit costs of operating electric cars with fuel cells by the 2050 have been estimated. The project of administrative support for the development of low-emission transport in Poland was indicated.
Źródło:
Journal of KONES; 2019, 26, 4; 69-74
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anomalies in combustion of hydrogen in a SI engine modified to work as a supercharged one
Autorzy:
Szwaja, S.
Cupiał, K.
Grab-Rogaliński, K.,
Powiązania:
https://bibliotekanauki.pl/articles/246823.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion
hydrogen
internal combustion engine
supercharging
Opis:
The paper describes combustion anomalies of various types randomly or permanently occurring while hydrogen is burnt in a supercharged spark ignited reciprocating engine. The anomalies were mainly identified as result of combustion pressure data analysis. Originally, the engine was a compression ignition one fuelled with diesel fuel. Modifications done on the engine dealt with decrease in its geometric compression ratio and equipping it with a spark plug located in diesel fuel injector position. The anomalies presented in the paper are typically associated with several abnormal phenomena as follows: flame propagation into intake manifold called back-fire, hydrogen spontaneous ignition by hot surface, flame propagation during valves overlap and extinguishing spark discharge flame kernel by high turbulence around a spark plug. These anomalies were observed in the supercharged engine, however, some of them were also detected while the engine was operated as a freely aspirated one. As investigated, some of these malfunctions would have been removed by change in engine operating parameters. Others need major changes in both exhaust pipeline geometry, hydrogen injection system, engine cylinder geometry and valve timing.
Źródło:
Journal of KONES; 2012, 19, 3; 437-442
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen as fuel in operation of internal combustion engines
Autorzy:
Kruczyński, S.
Ślęzak, M.
Gis, W.
Powiązania:
https://bibliotekanauki.pl/articles/242013.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
exhaust emission
ecology
hydrogen
engines
vehicles
Opis:
Hydrogen internal combustion engines (HICE) are presently the subject of numerous R&D projects. For hydrogen fuelling mainly, spark-ignition engines are adapted but it is also possible to adjust self-ignition engines. Self-ignition engines may be fuelled only with dual-fuels and usually demonstrate an oversized level of compression ratio requiring reduction because of engine knocking, whereas spark-ignition engines – on the contrary feature an undersized level of compression ratio that needs to be increased to ensure an effective combustion process. Hydrogen may be used also for gasoline dual-fuel engines. Hydrogen utilization as diesel engine fuel should be considered depending on the type of diesel cycle: 1.The use of hydrogen alone or as an addition to gasoline or LPG and methane in spark-ignition engines; 2.The use of hydrogen as an addition to diesel oil in self-ignition engines. In the paper are presented the review of the literature on the use only of hydrogen as a fuel or only of the additionof hydrogen to hydrocarbon fuels in engines with spark ignition and diesel. Have been studied combustion process, generation of heat and power, and efficiency of the engine. Have been evaluated opportunities to reduce harmful emissions. Have been evaluated possibilities of using hydrogen as a fuel for both type of engines. In the paper are presented the review use hydrogen as a fuel for vehicles with fuel cells too.
Źródło:
Journal of KONES; 2016, 23, 4; 237-244
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In-cylinder combustion analysis of a SI engine fuelled with hydrogen enriched compressed natural gas (HCNG) : engine performance, efficiency and emissions
Autorzy:
Juknelevičius, R.
Mehra, R.K.
Ma, F.
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/245683.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrogen
CNG
SI engine
combustion
emission
MFB
Opis:
The main objective of this study was to investigate the effect of hydrogen addition on spark ignition (SI) engine’s performance, thermal efficiency, and emission using variable composition hydrogen/CNG mixtures. The hydrogen was used in amounts of 0%, 20%, 40% by volume fraction at each engine speed and load. Experimental analysis was performed at engine speed of 1200 rpm, load of 120 Nm corresponding BMEP = 0.24 MPa, spark timing 26 CAD BTDC, and at engine speed of 2000 rpm, load of 350 Nm corresponding BMEP = 0.71 MPa, spark timing 22 CAD BTDC. The investigation results show that increasing amounts of hydrogen volume fraction contribute to shorten ignition delay time and decrease of the combustion duration, that also affect main combustion phase. The combustion duration analysis of mass fraction burned (MFB) was presented in the article. Decrease of CO2 in the exhaust gases was observed with increase of hydrogen amounts to the engine. However, nitrogen oxides (NOX) were found to increase with hydrogen addition if spark timing was not optimized according to hydrogen’s higher burning speed.
Źródło:
Journal of KONES; 2018, 25, 3; 253-260
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knock and combustion rate interaction in a hydrogen fuelled combustion engine
Autorzy:
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/245975.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion knock
heat release rate
hydrogen
engine
Opis:
The paper describes correlation between combustion knock intensity and combustion rate calculated as the heat release rate from combustion pressure traces of a hydrogen fuelled spark ignited engine. Unlike a gasoline spark ignited (SI) engine, the hydrogen fuelled engine can easily generate knock during combustion at working conditions similar to a gasoline engine. However, the hydrogen knock does not necessarily come from hydrogen auto-ignition at the end phase of spark-controlled combustion process as it is typical at the gasoline fuelled engine. The phenomenon of hydrogen knock significantly differs from the gasoline knock due to different combustion mechanisms and different fuel thermo-chemical properties. The knock can be generated during hydrogen combustion itself as result of combustion instabilities. Intensity of this knock, expressed here by intensity of combustion pressure fluctuations, is several times lower in comparison with the combustion knock by fuel self-ignition process. This "light knock" is a matter of this paper. The tests of hydrogen combustion in the IC engine has been conducted at air to hydrogen stoichiometric ratio at various compression ratios with spark timing sweep from -10 to 4 crank angle degrees referring to top dead centre of the engine piston. Obtained results show, that there is a positive correlation between the knock intensity and the combustion rate. This correlation is particularly observed at tests taken on the engine with compression ratio of 10. The conclusions should provide good premises for combustion knock modelling and its prediction.
Źródło:
Journal of KONES; 2011, 18, 3; 431-438
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Miller cycle based IC engine fuelled with a CNG/hydrogen
Autorzy:
Grab-Rogaliński, K.
Szwaja, S.
Tutak, W.
Powiązania:
https://bibliotekanauki.pl/articles/246306.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrogen
miller cycle
gaseous fuels
combustion engines
Opis:
The results of research conducted on a supercharged spark ignition gaseous engine are exposed in the paper. The engine was modified to work as an engine with the Miller cycle. Modification of the engine, that allowed it to work in the Miller cycle, dealt particularly with the camshaft. This modification allows changing both intake and exhaust timings independently with limitations of ±20 deg. During the research, the engine was fuelled with compressed natural gas or hydrogen optionally. It was for making comparison between selected engine parameters, while the engine was working on two significantly different fuels. Both fuels were delivered to intake manifold close to intake valve through a fuel mixer. During the research, pressure data was collected with various both spark ignition timings and equivalence ratios, and boost pressures. On the basis of obtained data the parameters as follows: indicated mean effective pressure, coefficient of variance from the indicated mean effective pressure, Normalized Mass Fraction Burn and Heat Release Rate were calculated and discussed. As observed optimal ignition, timing is advanced for the engine working on hydrogen or natural gas as fuel with the Miller cycle when compared to the classic Otto cycle applied to this engine. In all tests of the engine with the Miller cycle coefficient of variance from the indicated mean effective pressure indicates good stability of engine work. Finally, the engine working on hydrogen is characterized by shorter combustion period that resulted from higher laminar flame speed compared to the natural gas fuelled engine.
Źródło:
Journal of KONES; 2014, 21, 4; 137-144
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimating environmental benefits resulting from the justification for the implementation of hydrogen technology in the road transport in Poland
Autorzy:
Gis, W.
Menes, E.
Waśkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/246311.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
hydrogen technology
future development
environmental benefits
Opis:
Taking into account the depletion of crude oil resources, as well as progressive climate changes, requires both in the short and the long term a radical restructuring of the EU’s transport system. Among the measures designed to ensure attaining objectives of transport policy there are, among the others, proposals such as: gradual phasing-out of the conventionally-powered cars from the cities by the 2050 and transferring in the same time horizon, 50% of passenger transport over medium distances and the freight one over long distances, from the roads over to other modes of transport. New technologies for vehicles and traffic management will be the key to decreasing pollutants emissions form transport. The method of estimating environmental benefits resulting from the expected development of hydrogen technology in the road transport in Poland. The results of the adopted scenario of the expert forecast by the 2050 of the development of the fleet of cars equipped with hydrogen supplied fuel cells diving along the Polish roads, forecasts of the mileages of these vehicles. Predicted consumption of petroleum originated fuels by the vehicles being replaced by electric vehicles equipped with fuel cells. Estimating the emissions of pollutants by the said car fleet. The costs not incurred, related to the air pollution by gases and dust emitted from combustion engines of cars and buses as a result of the development of hydrogen technology in Poland in the selected forecast years, calculated based on the rates in force in Poland. These costs estimated based on the indicators published by the European Commission.
Źródło:
Journal of KONES; 2016, 23, 4; 597-603
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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