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Tytuł:
Monitoring Nitrogen Dioxide (NO2) in Environment of Ukraine based on Satellite Data
Autorzy:
Yelistratova, Lesya
Apostolov, Alexander
Khodorovskyi, Artur
Tymchyshyn, Maksym
Powiązania:
https://bibliotekanauki.pl/articles/27314277.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
remote sensing
nitrogen dioxide
air pollution
Ukraine
Opis:
Air pollution (especially near industrial enterprises that are located mainly in densely populated regions) is one of the most significant problems of modern ecology. The purpose of this research is to study nitrogen dioxide air pollution over Ukraine, which has a negative impact on human health. As part of the research over the territory of Ukraine, the real planar distribution of nitrogen dioxide (NO2) as well as its local emissions (which make the main contribution to this distribution) were revealed using the materials of the remote sensing of the Earth from the AURA satellite. The results were calculated for the multi-year period of 2005 through 2021 and separately for 2022, which characterized the full-scale war in Ukraine and which made it possible to identify priority polluters; namely, industrial enterprises (thermal power plants, heavy metallurgy enterprises, etc.). For 17 years, the average value of NO2 was 160.78 · 102 molecules/mm2; in 2022, its concentration decreased to 126.93·109 molecules/mm2. The war manifested itself due to the shutdown of industrial enterprises, which were (and remain) priority polluters in Ukraine (particularly in large cities).
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 6; 95--110
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological aspects of using mixtures of canola oil with n-hexane in diesel engine
Autorzy:
Longwic, Rafał
Sander, Przemysław
Tatarynow, Dawid
Powiązania:
https://bibliotekanauki.pl/articles/2097661.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
Diesel engine
nitrogen oxides
hydrocarbons
carbon dioxide
combustion
canola oil
n-hexane
common rail
silnik Diesla
tlenki azotu
węglowodory
dwutlenek węgla
spalanie
olej rzepakowy
n-heksan
Common Rail
Opis:
The article discusses the results of research on the use of canola oil and canola oil with the addition of n-hexane in a compression-ignition engine. An engine with a Common Rail injection system was tested in real traffic conditions on the road and on a chassis dynamometer. The tested fuels were fed to the engine by an additional fuel supply system. An analysis of the effect of the addition of n-hexane on the emission of the main components of toxic exhaust gases was carried out. The proposed solution may contribute to extending the service life of currently used compression ignition engines due to the improvement of the ecological properties of this type of drive sources.
Źródło:
Combustion Engines; 2022, 61, 3; 56--60
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of land use on plant community composition in Vysocina Region grasslands, Czech Republic
Autorzy:
Winkler, Jan
Mazur, Łukasz
Smékalová, Marta
Podlasek, Anna
Hurajová, Erika
Koda, Eugeniusz
Jiroušek, Martin
Jakimiuk, Aleksandra
Vaverková, Magdalena Daria
Powiązania:
https://bibliotekanauki.pl/articles/2171843.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sulfur dioxide
nitrogen oxides
meteorological factors
humidity
dwutlenek siarki
tlenki azotu
czynnik meteorologiczny
wilgotność
Opis:
Human disturbance is an important factor in forming vegetation. According to our hypothesis, anthropogenic activity and changes in the species composition of grass communities occur in the process of co-evolution. Understanding co-evolution, to better predict future changes in the entire ecosystem. Five grassland sites were selected with different methods of use and hence different anthropogenic disturbance regimes. The results show that the composition of grassland communities responds to the methods of their use. The needs and demands of our civilization are changing. Humans co-create plant communities the preservation of which depends on their use by humans.
Źródło:
Environment Protection Engineering; 2022, 48, 4; 21--33
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Biomethanization Gas Purification of Using Chlorophyll-Synthesizing Microalgae
Autorzy:
Dyachok, Vasil
Venher, Liubov
Huhlych, Sergij
Powiązania:
https://bibliotekanauki.pl/articles/2173378.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
microalgae
Chlorella vulgaris
biogas
carbon dioxide
hydrogen sulfide
ammonia
nitrogen oxide
sulfur dioxide
Opis:
The paper shows the possibility of using chlorophyll-synthesizing microalgae of Chlorella vulgaris to purify biogas from carbon dioxide (CO2), hydrogen sulfide (H2S) and ammonia (NH3). Experimental dependences of the dynamics of CO2 uptake by microalgae under the action of H2S inhibitor and NH3 activator were presented. A mathematical description of the growth of biomass of microalgae Chlorella vulgaris, depending on the concentration of hydrogen sulfide and ammonia, was obtained. The optimal values of hydrogen sulfide and ammonia concentration for the efficient process of carbon dioxide uptake by chlorophyll-synthesizing microalgae Chlorella vulgaris from biomethanization gas were established.
Źródło:
Journal of Ecological Engineering; 2022, 23, 9; 259--264
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influences of source intensity and meteorological factors on sulfur dioxide and nitrogen oxides based on the path analysis mode
Autorzy:
Guo, Chen-Lin
Zhang, Jing
Zhou, Qian Shuang
Ma, Yong
Powiązania:
https://bibliotekanauki.pl/articles/2171846.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
meteorological factor
analysis model
sulfur dioxide
nitrogen dioxide
czynnik meteorologiczny
model analityczny
dwutlenek siarki
tlenek azotu
Opis:
With rapid economic development and industrialization, air pollution is becoming a critical global issue affecting health. Sulfur dioxide and nitrogen oxides are the major contributors to acid rain and the key indicators for evaluating atmospheric pollution. And source intensity and meteorological factors are the main ways to influence the concentrations of sulfur dioxide and nitrogen oxides. Thus, to investigate the specific effects of source intensity, temperature, humidity, wind speed and atmospheric pressure on SO2 and NOx, the path analysis method was used for the model. The results showed that Source intensity significantly affects the concentrations of SO2and NO2. For both NO2 and SO2, the source intensity accounted for around 40%. Meteorological factors have very limited effects on the concentrations of SO2and NO2. The effects of the meteorological factors on air pollutants are specific as differences in material properties. Humidity significantly affects the concentration of SO2while temperature, humidity and wind speed have significantly affected the concentration of NO2.
Źródło:
Environment Protection Engineering; 2022, 48, 4; 51--65
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
About the Optimal Ratio Inhibitor and Activators of Carbon Dioxide Sorption Process by Using Chlorophyll-synthesizing Chlorella microalgae
Autorzy:
Dyachok, Vasil
Mandryk, Solomiia
Huhlych, Serhiy
Powiązania:
https://bibliotekanauki.pl/articles/1838425.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Chlorella microalgae
carbon dioxide
phosphorus oxide
nitrogen oxide
sulfur dioxide
inhibitor
activator
mathematical description
Opis:
The suppression of the inhibition effect by SO2 sulfur dioxide with the simultaneous action of two activators – P2O5 phosphorus oxide and NxOy nitrogen oxide, as well as the process of carbon dioxide absorption by chlorophyll-synthesizing microalgae Chlorella were studied in this work. The experimental dependences of the СО2 uptake dynamics by microalgae under the conditions of the SO2 inhibitor critical concentration action and the simultaneous presence of P2O5 and NxOy activators were shown. A mathematical description of the Chlorella microalgae biomass growth depending on the P2O5 and NxOy activators concentration, provided that there is a SO2 inhibitor constant concentration was obtained. The optimum values of the P2O5 phosphorus oxide and NxOy nitrogen oxides concentration at the SO2 inhibitor critical concentration for the carbon dioxide absorption by chlorophyll-synthesizing microalgae Chlorella process were established.
Źródło:
Journal of Ecological Engineering; 2021, 22, 5; 26-31
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Air Monitoring System in Megacity on the Example of St. Petersburg
Autorzy:
Dzhevaga, Natalia
Borisova, Darya
Powiązania:
https://bibliotekanauki.pl/articles/1839623.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
monitoring
air quality
environmental safety
dust
PM2.5
PM10
volatile organic compound
carbon oxide
nitrogen dioxide
Opis:
The paper considers the current problem of improving the quality of atmospheric monitoring. The paper aimed at conducting a monitoring section of the existing situation in the studied territories in St. Petersburg. The following study methods were described: gravimetric, electrochemical, and chromatographic. The analysis of samples was carried out on the following laboratory facilities of the mobile environmental laboratory: PU-3E aspirator, ECOLAB portable gas analyser, DUSTTRAK 8533 dust analyser, portable gas chromatograph FGKh-1, professional weather station. The study consisted of two parts and was carried out in two districts of the city: Novosmolenskaya Embankment of the Smolenka River (Vasileostrovsky District) and the banks of the Volkovka River (Frunzensky District). As a result of the study, the concentrations of nitrogen dioxide, carbon oxide, suspended solids and volatile organic compounds in the air of the studied districts were measured. The obtained values were compared with the maximal single limiting concentration (LMCm.s.) and assumptions were made about the possible sources of pollution. In the territory of Novosmolenskaya Embankment, the concentration of nitrogen dioxide varied from 0.211 mg/m3 to 0.472 mg/m3, which means the exceedance of LMCm.s. The maximum permissible concentration of the volatile organic compounds (VOC) content in air was exceeded by several orders of magnitude. No exceedance of LMCm.s. was detected for the content of carbon oxide and suspended solids in the air. The empirical data was used to build the air pollution content maps and to calculate the atmospheric pollution index in the studied territory.
Źródło:
Journal of Ecological Engineering; 2021, 22, 4; 175-185
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhanced Gas and Condensate Recovery: Review of Published Pilot and Commercial Projects
Wspomaganie wydobycia gazu ziemnego i kondensatu: przegląd opublikowanych projektów pilotażowych i komercyjnych
Autorzy:
Burachok, Oleksandr
Powiązania:
https://bibliotekanauki.pl/articles/2145829.pdf
Data publikacji:
2021
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
enhanced condensate recovery
dry gas injection
solvent gas injection
nitrogen injection
carbon dioxide injection
CO2 sequestration
wspomaganie wydobycia kondensatu
zatłaczanie
suchy gaz
płyn rozpuszczalnikowy
azot
dwutlenek węgla
sekwestracja CO2
Opis:
The majority of the Ukrainian gas condensate fields are in the final stage of development. The high level of reservoir energy depletion has caused significant in situ losses of condensed hydrocarbons. Improving and increasing hydrocarbon production is of great importance to the energy independence of Ukraine. In this paper, a review of the pilot and commercial enhanced gas and condensate recovery (EGR) projects was performed, based on published papers and literature sources, in order to identify those projects which could potentially be applied to the reservoir conditions of Ukrainian gas condensate fields. The EGR methods included the injection of dry gas (methane), hydrocarbon solvents (gas enriched with C2–C4 components), or nitrogen and carbon dioxide. The most commonly used and proven method is dry gas injection, which can be applied at any stage of the field’s development. Dry gas and intra-well cycling was done on five Ukrainian reservoirs, but because of the need to block significant volumes of sales gas they are not being considered for commercial application. Nitrogen has a number of significant advantages, but the fact that it increases the dew point pressure makes it applicable only at the early stage, when the reservoir pressure is above or near the dew point. Carbon dioxide is actively used for enhanced oil recovery (EOR) or for geological storage in depleted gas reservoirs. In light of the growing need to reduce carbon footprints, CO2 capture and sequestration is becoming very favourable, especially due to the low multi-contact miscibility pressure, the high density under reservoir conditions, and the good miscibility with formation water. All of these factors make it a good candidate for depleted gas condensate reservoirs.
Większość ukraińskich złóż gazu kondensatowego znajduje się w końcowej fazie zagospodarowania. Wysoki poziom wyczerpania energii złożowej spowodował znaczne straty in situ skroplonych węglowodorów. Duże znaczenie dla niezależności energetycznej Ukrainy ma usprawnienie i zwiększenie wydobycia węglowodorów. W niniejszym artykule dokonano przeglądu pilotażowych i komercyjnych projektów wspomagania wydobycia gazu ziemnego i kondensatu (EGR) na podstawie opublikowanych artykułów i źródeł literaturowych w celu zidentyfikowania tych, które mogą znaleźć zastosowanie w warunkach występujących w ukraińskich złożach gazowokondensatowych. Metody EGR obejmują zatłaczanie: suchego gazu (metanu), rozpuszczalników węglowodorów (gaz wzbogacony składnikami C2–C4), azotu i dwutlenku węgla. Najpowszechniej używane, sprawdzone i szeroko stosowane jest zatłaczanie suchego gazu, które można wykorzystać na każdym etapie zagospodarowania złoża. Na pięciu ukraińskich złożach zostało wdrożone zatłaczanie suchego gazu i obieg wewnątrz odwiertu, ale ze względu na konieczność zablokowania znacznych wolumenów gazu przeznaczonego do sprzedaży obecnie metoda ta nie jest brana pod uwagę do komercyjnego zastosowania. Azot ma wiele istotnych zalet, ale fakt, że powoduje zwiększenie ciśnieniowego punktu rosy, sprawia, że można go stosować tylko na wczesnym etapie, gdy ciśnienie złożowe jest wyższe od punktu rosy. Dwutlenek węgla jest aktywnie wykorzystywany do wspomagania wydobycia ropy naftowej (EOR) lub do geologicznego składowania w sczerpanych złożach gazu. W świetle rosnących potrzeb w zakresie redukcji śladu węglowego wychwytywanie i sekwestracja CO2 stają się bardzo korzystne, zwłaszcza ze względu na niską wartość ciśnienia mieszalności przy wielokrotnym kontakcie, dużą gęstość w warunkach złożowych oraz dobrą mieszalność z wodą złożową. Wszystko to sprawia, że jest to dobry kandydat do zastosowania w sczerpanych złożach gazu kondensatowego.
Źródło:
Nafta-Gaz; 2021, 77, 1; 20-25
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimating emissions of harmful exhaust components by aircraft engines during the takeoff and landing cycle in airport space
Szacowanie emisji toksycznych składników spalin wytwarzanych przez samoloty w cyklu startu i lądowania w przestrzeni portu lotniczego
Autorzy:
Głowacki, Paweł
Kalina, Piotr
Kawalec, Michal
Powiązania:
https://bibliotekanauki.pl/articles/36441042.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
ecology
aircraft turbine engine
engine exhaust
toxic exhaust gas components
nitrogen oxides
carbon monoxide
hydrocarbons
carbon dioxide
ekologia
lotniczy silnik turbinowy
spaliny silnika
toksyczne składniki spalin
tlenki azotu
tlenek węgla
węglowodory
dwutlenek węgla
Opis:
This articleexamines, based on the availableinformation and authors’ self-assessments, theenvironmental impact of turbine engine exhaust gases effect on the environment in the airport space during engines flight phases in the landing and takeoff cycle (LTO). The attention of aviation professionals is drawn to the fact that the amount of exhaust from the turbine engine is so significant that it may adversely change the ambient air at the airport. Consequently, increased emission level of carbon monoxide (CO), hydrocarbons (HC) during engine start-up and idle may pose a threat to the health of ramp staff. Also, high emission levels of nitrogen oxides (NOx) during takeoff, climb, cruise and descent is not without importance for the environment around the airport space. The paper gives CO2, HC, CO and NOx emission estimations based on ICAO Engine Emission Data Bank and the number of passenger operations at a medium-sized airport. It also provides calculation results of aircraft CO2, HC, CO and NOx emission using average times of aircraft maneuvers taken from aircraft Flight Data Recorder (FDR) in the LTO cycle various aircraft types at the airport. The latter, based on actual maneuvering times, lead to significantly reduced estimates of toxic exhaust gas emission volumes.
W artykule przeanalizowano, w oparciu o dostępne informacje oraz ocenę autorów, wpływ gazów spalinowych z silników turbinowych na środowisko w przestrzeni wokół portu lotniczego podczas cyklu lądowania i startu (LTO) samolotów. Autorzy zwracają uwagę na fakt, że ilość spalin produkowanych przez silniki turbinowe jest na tyle znacząca, iż może niekorzystnie zmienić powietrze otaczające lotniska. Zwiększony poziom emisji tlenku węgla (CO) i węglowodorów (HC) podczas rozruchu silnika i na biegu jałowym może więc stanowić zagrożenie dla zdrowia pracowników obsługi naziemnej. Wysoki poziom emisji tlenków azotu (NOx) podczas startu, wznoszenia, schodzenia i kołowania również nie jest obojętny dla środowiska wokół lotniska. W artykule najpierw przedstawiono szacunki emisji CO2, HC, CO i NOx w oparciu o normy ICAO oraz liczbę operacji pasażerskich na lotnisku średniej wielkości. Następnie obliczono szacunkowe emisje CO2, HC, CO i NOx na podstawie danych pobranych z rejestratora lotu (FDR) podczas cyklu LTO różnych typów statków powietrznych na lotnisku. Te drugie obliczenia, oparte na rzeczywistych czasach manewrowych, wskazują na znacznie niższe szacunkowe emisje toksycznych gazów w obrębie portu lotniczego.
Źródło:
Transactions on Aerospace Research; 2021, 2 (263); 63-70
0509-6669
2545-2835
Pojawia się w:
Transactions on Aerospace Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimating shipping emissions – A case study for cargo Port of Zadar, Croatia
Autorzy:
Knezević, V.
Pavin, Z.
Čulin, J.
Powiązania:
https://bibliotekanauki.pl/articles/2063981.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Port of Zadar
air pollutant emission
estimating shipping emissions
nitrogen oxides
particulate matter
volatile organic compounds
carbon dioxide
green port
Opis:
Reducing air pollutant emissions and energy consumption, as a necessary step to make ports more sustainable, is one of the crucial tasks and challenges of port management. Some of the port strategies to meet the term “green port” usually include reducing fuel consumption from vessels and vehicles in ports. This paper estimates the emission inventory of maritime traffic for the cargo Port of Zadar. For this research, emissions from cargo ships are estimated in the period from January 01. 2018 until October 01. 2019. The “bottom-up” methodology has been applied for estimating emissions, which includes detailed data on the ship’s characteristics (engine power, the load factor, fuel type, the emission factor) and time spent cruising and hotelling. The emissions from cargo ships have been estimated for three ship’s activities: cruising in the reduced speed zone, hotelling (time spent at berth), and maneuvering. The emission results (tons/year) refer to the pollutants such as nitrogen oxides (NOx), sulphur oxides (SOx), particulate matter (PM), volatile organic compounds (VOC), and carbon dioxide (CO2) which represents greenhouse gases. Estimating emission inventory is the first step for planning effective port air quality control. Some recommendations for reducing emissions in port areas are emphasized in this paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 615--620
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermogenic gases generated from coals and shales of the Upper Silesian and Lublin basins : hydrous pyrolysis approach
Autorzy:
Kotarba, Maciej J.
Bilkiewicz, Elżbieta
Jurek, Krzysztof
Waliczek, Marta
Więcław, Dariusz
Zych, Hieronim
Powiązania:
https://bibliotekanauki.pl/articles/2059608.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrous pyrolysis gas
gaseous hydrocarbon
carbon dioxide
molecular nitrogen
stable C, H, N isotopes
Upper Silesian
Lublin Coal basins
Opis:
In order to provide a better characterization of the origin and volume of thermogenic gas generation hydrous pyrolysis (HP) experiments were performed on coals and shales at 330 and 360oC for 72 hours. The maturity range of coals and shales used for HP varies from 0.57 to 0.92% Ro. The maturity increase caused by HP at 330 and 360oC ranges from 1.32 to 1.39% and from 1.71 to 1.83%, respectively. δ13C of CH4, 2H6, C3H6 and n-C4H10 in HP gases versus their reciprocal C-number have a concave relationship, and therefore do not follow a linear trend. δ2H of CH4, 2H6 and C3H6 in HP gases versus their reciprocal H-number show both linear and convex-concave relationships. The growth of CO2 yields during HP was higher for shales than for coals. H2S yields from shales are higher than from coals, which can be connected with catalytic and adsorbed influence of shale matrix. H2 was also generated in notable quantities from water and organic matter of coals and bigger amounts from shales. N2 yields grow with the increase of Ro after 3oC HP and it is more enriched in 15N isotope than after 330C.
Źródło:
Geological Quarterly; 2021, 65, 2; 65: 26
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of tropospheric NO2 over Iraq using OMI satellite measurements
Autorzy:
Rajab, Jasim M.
Hassan, Ahmed S.
Kadhum, Jasim H.
Al-Salihi, Ali M.
San Lim, Hwee
Powiązania:
https://bibliotekanauki.pl/articles/118650.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
nitrogen dioxide
air pollution
remote sensing
Baghdad
Iraq
Opis:
Tropospheric nitrogen dioxide (NO2) is a trace gas with important impact on atmospheric chemistry, human health and a key pollutant in particular cities, measured from space since the mid-1990s by the GOME, SCIAMACHY, OMI, and GOME-2 instruments. This study present ten years (monthly and yearly averaged) dataset from Ozone Monitoring Instrument (OMI) used to investigate tropospheric NO2 characteristics and variations over Iraq during 2005–2014. Annual NO2 shows an elevation from the northern to the southern and highest values was at central parts of Iraq. Monthly distributions revels higher values NO2 in winter and summer than spring and autumn seasons, and rising NO2 throughout study period over industrial and crowded urban zones. The trend analysis over Baghdad shows a linear growth rate 9.8% per year with an annual average (5.6·1015 molecules per 1 cm2). The air mass trajectory analysis as hotspot regions shows seasonal fluctuations between winter and summer seasons depend on weather conditions and topography. The increased NO2 values in winter are due to anthropogenic emissions and subsequent plumes from Europe. In addition, in summer because of hot weather and large paddy fields emissions. The lowest NO2 value was at monsoon period mostly linked to the rains. The OMI data and satellite information are able to observe the troposphere NO2 elevation at different regions.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2020, 29, 1; 3-16
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the NO2 concentration prediction possibility based on static and dynamic responses of TGS sensors at changing humidity levels
Autorzy:
Kalinowski, Paweł
Woźniak, Łukasz
Jasiński, Grzegorz
Jasiński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/220989.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
TGS sensors
partial least squares
nitrogen dioxide
dynamic measurements
Opis:
The commercially available metal-oxide TGS sensors are widely used in many applications due to the fact that they are inexpensive and considered to be reliable. However, they are partially selective and their responses are influenced by various factors, e.g. temperature or humidity level. Therefore, it is important to design a proper analysis system of the sensor responses. In this paper, the results of examinations of eight commercial TGS sensors combined in an array and measured over a period of a few months for the purpose of prediction of nitrogen dioxide concentration are presented. The measurements were performed at different relative humidity levels. PLS regression was employed as a method of quantitative analysis of the obtained sensor responses. The results of NO2 concentration prediction based on static and dynamic responses of sensors are compared. It is demonstrated that it is possible to predict the nitrogen dioxide concentration despite the influence of humidity.
Źródło:
Metrology and Measurement Systems; 2020, 27, 1; 167-179
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Explicit and implicit description of the factors impact on the NO2 concentration in the traffic corridor
Jawny i niejawny opis wpływu czynników na stężenie NO2 w kanionie komunikacyjnym
Autorzy:
Kamińska, Joanna Amelia
Turek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/204830.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nitrogen dioxide
traffic flow
meteorological conditions
random forest
linear regression
dwutlenek azotu
ruch uliczny
warunki meteorologiczne
losowy las
regresja liniowa
Opis:
High concentrations of nitrogen dioxide in the air, particularly in heavily urbanized areas, have an adverse effect on many aspects of residents’ health. A method is proposed for modelling daily average, minimal and maximal atmospheric NO2 concentrations in a conurbation, using two types of modelling: multiple linear regression (LR) an advanced data mining technique – Random Forest (RF). It was shown that Random Forest technique can be successfully applied to predict daily NO2 concentration based on data from 2015–2017 years and gives better fi t than linear models. The best results were obtained for predicting daily average NO2 values with R2=0.69 and RMSE=7.47 μg/m3. The cost of receiving an explicit, interpretable function is a much worse fit (R2 from 0.32 to 0.57). Verification of models on independent material from the first half of 2018 showed the correctness of the models with the mean average percentage error equal to 16.5% for RF and 28% for LR modelling daily average concentration. The most important factors were wind conditions and traffic flow. In prediction of maximal daily concentration, air temperature and air humidity take on greater importance. Prevailing westerly and south-westerly winds in Wrocław effectively implement the idea of ventilating the city within the studied intersection. Summarizing: when modeling natural phenomena, a compromise should be sought between the accuracy of the model and its interpretability.
Celem pracy jest zbadanie możliwości prognozowania dziennego stężenia NO2 za pomocą metody losowego lasu – RF i porównanie wyników z wielowymiarową regresją liniową (LR) w oparciu o ten sam zestaw danych. Ponadto zbadano wpływ zwiększenia interpretowalności modelu na jego dokładność. W pracy przedstawiono dwie metody modelowania dziennych wartości minimalnych, średnich oraz maksymalnych stężeń NO2 w aglomeracji miejskiej: wielowymiarowa regresja liniowa (LR) oraz losowy las (RF). Wykazano, że metoda Lasu Losowego (Random Forest) może być skutecznie wykorzystywana do przewidywania dziennych wartości stężenia NO2. Największą dokładność otrzymano dla przewidywania średnich wartości dziennych stężenia z R2=0.69 oraz RMSE=7.47 μg/m3. Kosztem otrzymania jawnej postaci funkcji w modeli liniowym (LR) jest znacząco niższa dokładność przewidywania wartości stężenia (R2 od 0.32 do 0.57). Weryfikacja modeli na niezależnym materiale z pierwszej połowy 2018 roku potwierdziła poprawność modeli ze średnim błędem względnym dla średnich wartości dobowych stężeń równym 16.5% dla RF oraz 28% dla LR. Największy wpływ na stężenia NO2 w kanionie komunikacyjnym ma wiatr oraz natężenie ruchu. W modelowaniu maksymalnych wartości dobowych nabierają znaczenia temperatura powietrza oraz wilgotność względna powietrza. Przeważające zachodnie i północno-zachodnie wiatry we Wrocławiu skutecznie realizują koncepcję przewietrzania miasta w zakresie rozważanego skrzyżowania.
Źródło:
Archives of Environmental Protection; 2020, 46, 1; 93-99
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air pollution: how many cigarettes does each Pole ‘smoke’ every year and how does it influence health, with special respect to lung cancer?
Autorzy:
Chudzik, R.
Rybojad, P.
Jarosz-Chudzik, K.
Sawicki, M.
Rybojad, B.
Panasiuk, L.
Powiązania:
https://bibliotekanauki.pl/articles/2085106.pdf
Data publikacji:
2019
Wydawca:
Instytut Medycyny Wsi
Tematy:
lung cancer
PM2.5
air pollution
nitrogen dioxide
PM10
Opis:
Introduction. Air pollution is one of the most important issues of our times. Air quality assessment is based on the measurement of the concentration of substances formed during the combustion process and micro-particles suspended in the air in the form of an aerosol. Microscopic atmospheric particulate matters (PM) 2.5 and 10 are mixtures of organic and inorganic pollutants smaller than 2.5 and 10 μm, respectively. They are the main cause of negative phenomena in the earth’s atmosphere of Earth and human health, especially on the respiratory and cardiovascular systems. Particulates have the ability to cause permanent mutations of tissue, leading to neoplasms and even premature deaths. Nitrogen dioxide (NO2) is one of the main pollutants which arises mainly during the burning of fossil fuels. Based on numerous scientific researches, it has been proved that long-term exposure to NO2 could increase morbidity of cancer due to inflammatory processes increasing abnormal mutations. Materials and method. Data available in the Polish National Cancer Registry, Chief Inspectorate for Environmental Protection and Map of Health Needs in the Field of Oncology for Poland, WHO Air Quality Guidelines 2005 were analyzed. Air pollution was also evaluated: PM2.5, PM10, NO2, and compared with lung cancer morbidity. Results and conclusions. Based on the available data and literature, it can be concluded that in 2009–2017, on average, each Pole smoked ten cigarettes a day +/- 2. Therefore, it can be estimated that after 60 years everyone had 30 package-years of smoking, leading to a high risk of lung cancer and other smoking related diseases. Additionally air quality in Poland is not satisfactory, exceeding the standards presented in the WHO Guidelines 2005. It can be assumed that this may translate into an additional, independent continuous increase in morbidity and mortality dependent on smoking.
Źródło:
Annals of Agricultural and Environmental Medicine; 2019, 26, 4; 566-571
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 53

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