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    Wyświetlanie 1-4 z 4
    Tytuł:
    Evaluation of pollutant emissions from a railbus in real operating conditions during transport work
    Autorzy:
    Rymaniak, Łukasz
    Wiśniewski, Sławomir
    Woźniak, Krystian
    Frankowski, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/24202482.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    emissions
    passenger
    PEMS
    railbus
    toxicity indicators
    emisje
    pasażerowie
    autobus szynowy
    wskaźniki toksyczności
    Opis:
    The article discusses issues related to the assessment of pollutant emissions from a railbus during transport work. The test object was a rail vehicle equipped with two diesel engines with a total power of 780 kW, Stage IIIB homologated. Measurements were carried out on the route Poznań-Wągrowiec in two directions. During the tests, the vehicle performed a transport service, where the number of passengers was counted. For the completed cycles, the average number of people was 82 and 18. Based on the obtained data, the vehicle operating conditions and emission indicators were analyzed, which were related to the number of passengers. A dimensionless toxicity index was also determined.
    Źródło:
    Combustion Engines; 2023, 62, 3; 84--88
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of toxicity indicators related to CO2 emissions in the ecological assessment of an two-wheel vehicle
    Autorzy:
    Szymlet, Natalia
    Kamińska, Michalina
    Lijewski, Piotr
    Rymaniak, Łukasz
    Tutak, Przemysław
    Powiązania:
    https://bibliotekanauki.pl/articles/2097581.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    motorcycles
    toxicity indicators
    laboratory conditions
    WMTC test
    PEMS
    motocykle
    wskaźniki toksyczności
    warunki laboratoryjne
    test WMTC
    Opis:
    The subject of the article is proposed proprietary M toxicity indicator, which is based on the assumption that CO2 emissions are a measure of the correctness of the combustion process. For this purpose, gaseous exhaust compounds such as hydrocarbons, nitrogen oxides, carbon monoxide and carbon dioxide were measured and analyzed. The test object was a motorcycle, equipped with an gasoline engine with a displacement of 0.7 dm3 and a maximum power of 55 kW. The tests were carried out using the PEMS (Portable Emissions Measurement System) AxionR/S+. The exhaust emissions measurement was done in line with the WMTC (World Motorcycles Test Cycle) certification test, dedicated to vehicles in this category. The test consists of three parts, each of them lasts 600 s and has a different maximum speed value. The test was performed on a single-roller chassis dynamometer, designed for testing two-wheeled vehicles. The toxicity indicators and rotation speed results were presented as a function of time.
    Źródło:
    Combustion Engines; 2021, 60, 4; 36--41
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the environmental indicators for vehicles of different categories in relation to CO2 emission based on road tests
    Autorzy:
    Merkisz, J.
    Rymaniak, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/132884.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    CO2 emission
    combustion engines
    portable emission measurement system
    PEMS
    real driving emissions
    RDE
    toxicity indicators
    emisja dwutlenku węgla
    silnik spalinowy
    przenośne systemy pomiaru emisji
    rzeczywista emisja cząstek
    wskaźniki toksyczności
    Opis:
    The article discusses the possibility of determining the environmental indicators for vehicles of different categories in relation to CO2 emissions. These are called toxicity indicators because they concern the compounds: CO, THC and NOx. Three Euro V compliant vehicles with different propulsion systems types were used for the study: a 0.9 dm3 urban passenger car with a SI engine and a start-stop system, a 2.5 dm3 off-road vehicle with a CI engine, and a city bus with a hybrid drive system in series configuration and a CI engine with a displacement of 6.7 dm3. Measurements were made in actual operating conditions in the Poznan agglomeration using a portable emissions measurement system (PEMS). The paper presents the characteristics of the operating time shares of vehicles and propulsion systems as well as CO2 emissions depending on the engine load and crankshaft rotational speed for individual vehicles. The determined toxicity indicators allowed to indicate their usefulness, to make comparisons between tested vehicles, and to identify directions for further work on the application and interpretation of these indicators.
    Źródło:
    Combustion Engines; 2017, 56, 3; 66-72
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecotoxicological effect of heavy metals in free-living ciliate protozoa of Lake Maracaibo, Venezuela
    Autorzy:
    Castro Echavez, Fernando Luis
    Marín-Leal, Julio César
    Powiązania:
    https://bibliotekanauki.pl/articles/2048501.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    contamination
    ecotoxicological tests
    lethal concentration LC50
    microbiological indicators of early warning
    toxicity
    Opis:
    Multiple anthropogenic agents have turned Lake Maracaibo into a hypereutrophic environment. Heavy metals resulting from the steel and oil industry augment pollution in the lake. There is a lack of research on the ecotoxicological effect of heavy metals in protozoa. To evaluate the ecotoxicological effect of Cr 3+ , Cr6+ , Cd2+ , Pb2+ and Ni2+ on free-living ciliated protozoa and to identify suitable ciliated protozoa candidates for bioindicators of water quality; we estimated the lethal concentration for 50% of the protozoa population (LC50 ) in samples from two stations (S1 : narrow of Maracaibo and S2 : South of the lake) using ecotoxicological tests in the Sedgewick–Rafter chamber and Probit analysis. The general toxicity patterns obtained for S1 protozoa (Euplotes sp. and Oxytricha sp.) were Cr3+ > Cd2+ > Pb2+ > Cr6+ > Ni2+ ; and those corresponding to S2 (Coleps sp. and Chilodonella sp.) were Cr6+ > Cr3+ > Cd2+ > Pb2+ >Ni2+. We found statistically significant difference (p < 0.05) in the LC50 of protozoa exposed to Cr3+, Cr6+, Ni2+ and Pb2+ when comparing the two sampling stations. The differences observed in toxicity patterns are probably the result of various kinds of protozoa adaptation, possibly induced by various sources, levels and incidents of exposure to heavy metals contamination of the protozoa studied and to the physicochemical conditions prevailing in the two selected stations. The levels of tolerance observed in the present study, allow us to infer that S2 ciliates are the most susceptible to the contaminants studied and can be used as possible microbiological indicators that provide early warning in studies of contamination by heavy metals in Lake Maracaibo.
    Źródło:
    Journal of Water and Land Development; 2021, 51; 102-116
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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