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Wyświetlanie 1-15 z 21
Tytuł:
Identification of emission indicators harmful compounds for assessment of dynamic state of a marine diesel engine
Autorzy:
Bogdanowicz, Artur
Zadrąg, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/133688.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
dynamic states
emission
marine diesel engine
stany dynamiczne
emisja
okrętowy silnik tłokowy
Opis:
The operation of a ship's propulsion system is a variable process in time, which is described in both static and dynamic states. The mutual proportions between them depend primarily on a type of ship and tasks to which it was designed. In a case of special units of particular use (e.g. warships) and ships, which operate on narrow waters such as canals or port basins, participation of dynamic states is increasing significantly. Hence a necessity to analyze the dynamic states of marine diesel engines, among others in terms of their increased harmful compounds emission. The paper presents a methodology of engine dynamic state analysis, emission indicators that can be used to assess the dynamic state of a ship have been proposed. As an example of application, the analysis of harmful compounds emissions during dynamic states while a real cruise of navy ship has been carried out. It has been also proposed to use simple dynamics indicators such as single-base and chain indexes to describe the change in concentrations of harmful compounds in dynamic states.
Źródło:
Combustion Engines; 2019, 58, 3; 247-251
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of parameter modifications in the Diesel engine power system on the emissions of harmful compounds
Autorzy:
Merkisz, Jerzy
Bajerlein, Maciej
Zieliński, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/2097448.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
IC engine
chip tuning
CI
PEMS
silnik o spalaniu wewnętrznym
chiptuning
Opis:
The article presents the results of emission tests and vehicle operation indicators fueled with diesel oil. The tests were carried out for a passenger vehicle equipped with a diesel engine meeting Euro 3 emissions standard, moving in urban traffic. The measurements were carried out using modern PEMS (Portable Emission Measurement System) enabling the emission of gaseous components from exhaust systems of the tested object. On the basis of the conducted tests, the load characteristics were determined using the torque values obtained along with the engine speeds. The measurement route included two cycles: urban driving and fast acceleration. The aim of the study was to assess the impact of modifications to the control maps on CO, CO2, PM and NOx exhaust gas emissions under real operating conditions.
Źródło:
Combustion Engines; 2020, 59, 1; 36--40
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Silicate Modifier on the Emission of Harmful Compounds from Phenolic Resin used in Cold-Box Technology
Autorzy:
Żymankowska-Kumon, S.
Bobrowski, A.
Drożyński, D.
Grabowska, B.
Kaczmarska, K.
Powiązania:
https://bibliotekanauki.pl/articles/380640.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environment protection
aromatic hydrocarbons
phenolic resin
emission
Cold-Box technology
ochrona środowiska
węglowodory aromatyczne
żywica fenolowa
emisja
technologia Cold-Box
Opis:
In many foundries, the requirements placed on castings production have risen mainly over the few years. Further trends in recent years have been the ever increasing level of automation and introduction of new alloys, especially composites. On the other hand, the foundry environment has become increasingly difficult because is used many organic binders. Environmental regulations will be further tightened up. These processes are pursued at national, European and global level. Conformity with emission limits is becoming increasingly difficult. The problem is emission of aromatic hydrocarbons, phenol, odours and other harmful compounds to environment. The main purpose of many companies is reduction of this toxins. The new cold-box systems (based on phenolic resins) try to reduce the emission by introducing into the resin structure silicate modifiers. Research presented of this article evaluate the effectiveness of these methods. The results show comparison of two resins ("without" and "with" silicate modifier) for assessment of emission of harmful aromatic hydrocarbons and phenol.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 151-156
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of concentrations harmful compounds from main ship’s propulsion engine cooperating with a fixed pitch propeller in dynamic states
Autorzy:
Bogdanowicz, Artur
Kniaziewicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/132880.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
simulation
modelling
emission
marine diesel engine
symulacja
modelowanie
emisja
okrętowy silnik tłokowy
Opis:
The article presents a mathematical model of a marine propulsion system and a computer program based on the LabVIEW environment. For a purpose of model construction, a ship's hull resistance was identified and an approximation equations of the Wageningen institute for ship propellers were used. The ship's motion equations were used to build the propulsion system model. On the basis of conducted tests of Sulzer 6AL20 / 24 marine engine, a map of concentrations harmful compounds was created in various load state and transferred to a computer program.
Źródło:
Combustion Engines; 2019, 58, 3; 51-55
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The emission of harmful compounds from the marine diesel engine fueled by a blend of n-butanol and marine fuel
Autorzy:
Bogdanowicz, Artur
Kniaziewicz, Tomasz
Zadrąg, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2097614.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
emission
marine diesel engine
n-butanol
marine fuel blend
emisja
okrętowy silnik spalinowy
żeglugowa mieszanka paliwowa
Opis:
The use of renewable fuels may be an action leading to the reduction of pollutant emissions. This group includes biobutanol as a product of biomass fermentation. Some of its physicochemical properties, including the ability to mix with hydrocarbon fuels, make it suitable for use as a fuel component for marine diesel engines. The article presents the results of research on the concentration of exhaust gas components of a Sulzer 6AL20/24 diesel engine powered by a mixture of n-butane and diesel oil. The emission intensity were calculated for the tested components: carbon monoxide, carbon dioxide and nitrogen oxides. The emission intensity surface graphs were created based on the calculated data. The tests were carried out using different concentrations of the mixture of n-butanol and marine fuel.
Źródło:
Combustion Engines; 2021, 60, 4; 90--95
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of catalitic reactors usefulness to reduce pollution generated by piston combustion engines with regard to ship main engines
Autorzy:
Zielińska, E.
Girtler, J.
Lejda, K.
Powiązania:
https://bibliotekanauki.pl/articles/260376.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship engine
catalytic reactor
catalytic reactor efficiency
harmful compounds
Opis:
The article presents results which indicate that the use of catalytic reactors to reduce emissions of harmful compunds contained in the exhaust gas is important in the operation of vehicle motors operation. Efforts of the shipbuilding industry to reduce the toxicity of exhaust gas emitted by the main engines have been indicated and pointed to the desirability of the use of these catalysts in maritime transport. It has been pointed out that studies of the harmful substances in exhaust gases performer at vehicle inspection stations have an impact on increasing the safety of drivers and other road users and contribute to preserving the natural environment by reducing the danger coming from cars operating on Polish roads. An opinion has been expressed that the most serious threats to the environment are emitted by car transport exhaust fumes, which are characterized by significant emission of toxic compounds excreted into the atmosphere from tailpipe emissions. It has been demonstrated that a fully functioning catalytic reactor, operating in a steady state at appropriate temperatures and the composition of the mixture close to stoichiometric ratio, can reduce emissions of carbon monoxide, hydrocarbons and nitrogen oxides by more than 90%. Also, an assessment has been presented reporting the efficiency of catalytic reactors of spark ignition engines operating in a test vehicle inspection station. The results of research in the evaluation of their performance were correlated with their operation waveforms. Such an approach is justified by the fact that during the operation of each vehicle the wear of its assemblies and components is different – including the catalytic reactor. The catalytic layer undergoes aging so that there are changes in the structure and chemical composition of the catalyst bed, while the overlapping of layers of different chemical compounds that block access to the active layer of the reactor. An opinion has also been expressed that it would be advisable to take steps to use research results presented in this article for research of catalytic reactors similar use in diagnostic systems of marine combustion engines, especially the main ones, which exhaust emissions are incomparably greater than in the case of car engines.
Źródło:
Polish Maritime Research; 2017, 1; 81-87
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of road transport on emission of toxic substances in Poland against the EU countries
Autorzy:
Jacyna, M.
Ambroziak, T.
Merkisz-Guranowska, A.
Pielecha, J.
Jacyna-Gołda, I.
Lewczuk, K.
Pyza, D.
Wasiak, M.
Szczepański, E.
Żak, J.
Powiązania:
https://bibliotekanauki.pl/articles/243251.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
emission of harmful compounds
ecology of transport
Opis:
The paper is a result of research work carried out under the project EMITRANSYS for shaping ecological transport system. The paper presents selected aspects of emission and concentration of harmful compounds of exhaust gases generated by road transport. It also presents the share of harmful compounds emitted by road transport in comparison with the emission from other sectors of economy. Transport policy should encourage the usage of energyefficient and less environmentally damaging modes of transport and their efficient use. The paper analyses the emissions of selected pollutants and their estimated contribution to the total emissions of road transport. It also presents selected aspects of the identification of areas with the highest emissions of harmful compounds in Poland against the European Union. This analysis provides a basis to identify the instruments to prevent and reduce pollution arising from transport activities. In particular, variable emission of selected components of fumes according to the velocity of passenger vehicle. the measured values for NO2 concentration in the UE countries in 2011, the measured values for CO concentration in UE countries in 2011, the measured values for PM10 concentration in UE countries in 2011, the measured values for PM2.5 concentration in UE countries in 2011 are presented in the paper.
Źródło:
Journal of KONES; 2014, 21, 3; 133-140
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of emissions and dispersion of harmful compounds from marine main propulsion diesel engines of vessels navigating in specified water basins
Autorzy:
Kniaziewicz, Tomasz.
Powiązania:
Zeszyty Naukowe / Akademia Marynarki Wojennej im. Bohaterów Westerplatte 2016, nr 4, s. 55-73
Data publikacji:
2016
Tematy:
Wpływ na środowisko
Aparatura naukowo-badawcza
Spaliny
Konstrukcja maszyn i urządzeń
Silniki okrętowe
Opis:
Rys.
Bibliogr.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Investigation of Harmful Chemical Compounds from Dual-Fuelled Diesel Engine
Autorzy:
Smigins, Ruslans
Skrzek, Tomasz
Górska, Milena
Pawlak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/101910.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
diesel engine
CNG
harmful emissions
alternative fuel
silnik wysokoprężny
szkodliwe emisje
paliwo alternatywne
Opis:
This paper investigated the impact of the exhaust gas recirculation on the concentration of selected harmful chemical compounds from the AVL 5402 research diesel engine powered with diesel fuel (DF) and compressed natural gas (CNG). The engine was operated in the dual fuel mode. It means that the engine was conventionally fuelled by regular diesel fuel and simultaneously by CNG dosed into the inlet pipe. The necessary tests were carried out for the mixtures containing 30, 50 and 70% of CNG (by energy content) in the total chemical energy delivered together with diesel fuel (DF) into the combustion chamber. The research was conducted for the stationary conditions of the engine operation at 1200 rpm and constant 1004 Joules of a fuel chemical energy delivered in each cycle into the combustion chamber. Under such conditions, the impact of the EGR rate changed in range of 0–50% on the emissions of selected unburned hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) as well as particulate matter (PM), was evaluated. The obtained results confirmed that the EGR system is effective in the reduction of the NOx formation for all tested fuel mixtures. Nevertheless, it was found that the addition of CNG combusted in the diesel engine generates more harmful pollutants in comparison with diesel fuel. However, in some cases the concentration of NOx as well as PM was comparable or lower. It suggests that the combustion of CNG in diesels allows achieving environmental benefits. In this case, further optimization of the engine fuel supply system is necessary.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 4; 21-29
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of the model of proecological transport system
Autorzy:
Jachimowski, R.
Kłodawski, M.
Lewczuk, K.
Szczepański, E.
Wasiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/245589.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
proecological transport system
transport
simulation
traffic modelling
emissions of harmful compounds of exhaust gases
Opis:
Paper presents assumptions to build simulation model allowing computational experimentation and inference on impact of various factors on transport modal split and the impact that transport has on environment. It presents a general mathematical model of environmentally friendly transport system and characterizes particular elements of this model. The structure of transport network is mapped with a graph. The characteristics describing elements of this structure, vehicles, and characteristics of harmful compounds emission are given. Model will be implemented in PTV VISUM environment – a tool supporting planning of transport processes as well as analysis and designing of transport systems. The model of proecological transport system developed in PTV VISUM will consist of model of demand for both passenger and freight transport, and model of transport network cooperating with various means of transport. Road and rail vehicles for passenger and freight transport are characterized and divided into groups according to type of fuel and harmful emission. The demand for transport services and emission of exhaust gases components are reflected in model of proecological transport system of Poland. The last part of paper presents a sample of preliminary research on estimating emission from particular type of vehicle.
Źródło:
Journal of KONES; 2013, 20, 4; 129-139
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of combustion engine and hybrid propulsion unit in aviation application in terms of emission of harmful compounds in the exhausts emitted to the atmosphere
Autorzy:
Orkisz, Marek
Wygonik, Piotr
Kuźniar, Michał
Kalwara, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/133727.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
hybrid
combustion engines
motor glider
rotary engine
Wankel engine
hybrid propulsion
emission
exhaust gases
hybryda
silniki spalinowe
motoszybowiec
silnik rotacyjny
silnik Wankla
napęd hybrydowy
emisja spalin
Opis:
Comparative analysis of combustion and hybrid propulsion unit in aviation application in terms of emission of harmful compounds in the exhausts emitted to the atmosphere. For the propulsion of the AOS 71 motor glider, two types of propulsion were planned as development versions. The first analysed propulsion is based on a combustion engine, but of the Wankel type (LCR 814 engine with the power of 55 kW). The second designed propulsion is an hybrid based on a LCR 407 combustion engine with a power of 28 kW, which is connected in series with an electric generator propelling the engine (Emrax 228 engine), total power of the propulsion is 55 kW. The comparison of emissions of harmful compounds emitted to the atmosphere generated by the combustion and hybrid power unit intended for assembly in the AOS 71 motor glider, assuming various loads and methods of hybrid propulsion control, was made. The tests were conducted in laboratory conditions. Several different programs were designed to simulate different energy management methods in a hybrid system, depending on the predicted mission and load of the motor glider. On the basis of laboratory tests, exhaust emission was determined from both propulsions as a function of rotational speed and load. Then, based on the assumed flight trajectory and collected test data, the emission for both propulsions variants was determined. The values of emission parameters were compared and the results were presented in diagrams and discussed in the conclusions.
Źródło:
Combustion Engines; 2019, 58, 3; 213-217
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of marine gas turbine engine parameters in terms of exhaust harmful emissions
Autorzy:
Wirkowski, P.
Kniaziewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/133436.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
harmful compounds
emission
exhaust gases
marine gas turbine engine
związki szkodliwe
emisja
spaliny
okrętowy silnik turbinowy
Opis:
The article presents an analysis of the use of gas turbine engine in the propulsion and marine power plant of vessels, taking into account environmental aspects. The preliminary results of emission tests of harmful exhaust emissions of the laboratory gas turbine engine were presented. Also an analysis was also undertaken on the possibility of carrying out measurements of concentrations of pollutants in the marine gas turbine engine propulsion systems in terms of its operation on the vessel.
Źródło:
Combustion Engines; 2017, 56, 4; 87-91
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specific emission of harmful compounds analysis from an agricultural tractor in a modified NRSC test
Analiza jednostkowej emisji związków toksycznych z ciągnika rolniczego w zmodyfikowanym teście NRSC
Autorzy:
Szymlet, N.
Siedlecki, M.
Lijewski, P.
Sokolnicka, B.
Powiązania:
https://bibliotekanauki.pl/articles/334896.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
emission
NRMM
modified NRSC test
PEMS
emisja
maszyny ruchome nieporuszające się po drogach
zmodyfikowany test NRSC
Opis:
Non-road vehicles type approval tests consist of testing the combustion engines themselves on engine dynamometer stations. As a part of these tests, NRSC and NRTC tests are conducted. The many years of research conducted by the Poznan University of Technology revealed differences in the actual specific emission of toxic components of exhaust gases from agricultural machinery compared to the type approval tests. This is related to the different operating conditions of the internal combustion engine relative to the test cycles. For this reason, the authors conducted a study of the actual emission from an agricultural tractor in a 13-phase NRSC test, modified to more closely reflect real operating conditions. These points were determined on the basis of operating points obtained from tests in real operating conditions. Before the tests, the tractor engine was warmed up to its operating temperature, after which it was loaded by the power take-off shaft with a portable engine dynamometer system. Analyzers from the PEMS group were connected to the tractor's exhaust system, which allowed to determine the concentrations of exhaust components such as CO, HC, NOx, PM, in the type approval testing process. The exhaust emission tests were extended with the solid particles number emission as well as their dimensional distribution, which while not limited through emission norms, is still very important from the point of view of human health and life. The analysis of the results allowed to determine the limit value excess level of specific compounds from the tractor.
Testy homologacyjne pojazdów o zastosowaniu pozadrogowym polegają na badaniu pod kątem emisyjności samych silników spalinowych na stanowiskach hamownianych. W ich czasie prowadzone są testy NRSC (Non Road Stationary Cycle) i NRTC (Non Road Transient Cycle). Wieloletnie badania Politechniki Poznańskiej dowiodły różnic w rzeczywistej emisji jednostkowej składników toksycznych spalin z maszyn rolniczych w porównaniu do testów homologacyjnych. Związane jest to z odmiennymi warunkami pracy silnika spalinowego w stosunku do cykli badawczych. Z tego powodu autorzy przeprowadzili badania rzeczywistej emisji z ciągnika rolniczego w 13-fazowym teście NRSC zmodyfikowanym tak, by w większym stopniu odwzorowywał warunki rzeczywiste. Punkty te określono na podstawie uprzednio przeprowadzonych badań parametrów pracy w rzeczywistych warunkach eksploatacji. Po uzyskaniu temperatury roboczej oleju i cieczy chłodzącej silnik ciągnika był obciążany przez wał odbioru mocy samojezdną hamownią silnikową. Do układu wylotowego ciągnika podłączone były analizatory z grupy PEMS, które pozwoliły na wyznaczenie stężeń toksycznych składników spalin: CO, HC, NOx, PM, rozszerzone o nielimitowaną, ale bardzo istotną z punktu widzenia zdrowia i życia ludzi emisję liczby cząstek stałych PN oraz ich rozkład wymiarowy. Analiza wyników pozwoliła na określenie emisji związków toksycznych względem wartości dopuszczalnych.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2018, 63, 4; 220-224
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of operating parameters of marine gas turbine engine in terms of emissions of harmful exhaust gases compounds
Autorzy:
Wirkowski, P.
Kniaziewicz, T.
Markowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2073644.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
harmful compounds
emission
exhaust gases
marine gas turbine engine
związki szkodliwe
emisja spalin
silnik okrętowy
turbina gazowa
Opis:
The article presents an analysis of the use of gas turbine engine in the propulsion and marine power plant of vessels, taking into account environmental aspects. The preliminary results of emission tests of harmful exhaust emissions of the laboratory gas turbine engine were presented. Also an analysis was also undertaken on the possibility of carrying out measurements of concentrations of pollutants in the marine gas turbine engine propulsion systems in terms of its operation on the vessel.
Źródło:
Journal of Polish CIMEEAC; 2016, 11, 1; 189--197
1231-3998
Pojawia się w:
Journal of Polish CIMEEAC
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identifying the issue of reducing the emission of harmful compounds in the exhaust gas from marine main engines and description of the emission process of these compounds in probabilistic approach
Autorzy:
Łosiewicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/258884.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship’s main engine
semi-Markov process
Diesel engine
harmful substance
Opis:
The article discusses the results of actions performed by marine engine manufacturers towards the reduction of emission of harmful substances in the exhaust gas from these engines. The discussion is limited to main engines produced by MAN B&W. A model is proposed to describe the process of emission of harmful substances from Diesel engines based on the semi-Markov process, discrete in states and continuous in the operating time. The states of this process are: engine ability state (s1) and engine inability state (s2). A method to calculate probabilities P1 and P2 of the appearance of states s1 and s2 is proposed. State s1 is interpreted as corresponding to the inequality ekek(dop), where ek represents the mass of harmful substances emitted by the engine during its operation and ek(dop) is the maximum mass of emission of these substances permitted by relevant regulations.
Źródło:
Polish Maritime Research; 2017, 2; 89-95
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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