Готові списки джерел за темами / Pollutant mixture

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Добірка наукової літератури з теми "Pollutant mixture"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Pollutant mixture"

Noël, Florian, Claire Trocquet, Christophe A. Serra, and Stéphane Le Calvé. "Experimental Validation of a Novel Generator of Gas Mixtures Based on Axial Gas Pulses Coupled to a Micromixer." Micromachines 12, no. 6 (2021): 715. http://dx.doi.org/10.3390/mi12060715.

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In this work, a novel generator of gas mixtures previously numerically investigated and based on axial gas pulses coupled to a micromixer has been conceived, manufactured, and validated. Standard gaseous pollutant mixtures and pure nitrogen or pure air were introduced in a microdevice designed to generate alternating axial gas pulses which were downstream homogenized by means of a multi-stage modular micromixer. The dilution, and therefore the final pollutant concentration, was controlled by two parameters: the ratio between the times of each of the two gas pulses and the partial pressure of t

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Surakasi, Raviteja, Mohd Yunus Khan, Arif Senol Sener, et al. "Analysis of Environmental Emission Neat Diesel-Biodiesel–Algae Oil-Nanometal Additives in Compression Ignition Engines." Journal of Nanomaterials 2022 (February 28, 2022): 1–7. http://dx.doi.org/10.1155/2022/3660233.

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The production of biodiesel as an alternative fuel and its use as a mixture and other additives are presented. In the present research work, additive blends with diesel biodiesel from algae oil are physically characterised and an analysis of pollutant emissions is carried out when used in an ignition engine by compression. The measurement of pollutant emissions is carried out through a combined emission analyzer adapted to a system of valves attached to the experimental facility. The properties of each mixture with the polluting emissions are compared with that of the reference diesel. It was

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Nitu, Sehrawat, and Chauhan Ritika. "Investigatory Studies on Pattern in Enhancement in Fine Particulate Matter in the Delhi during winters." INTERNATIONAL JOURNAL OF PHARMACEUTICAL AND BIO-MEDICAL SCIENCE 03, no. 03 (2023): 98–101. https://doi.org/10.5281/zenodo.7695115.

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Smog is a harmful mixture of fog, smoke, dust and air pollutants such as nitrogen oxides, volatile organic compounds etc. Ground ozone can cause distressing health effect. Smog is a complex atmospheric pollutant mixture consisting of ozone, a pollutant with adverse effects on human health, vegetation, and materials; other eye-irritant and phytotoxic pollutants (such as aldehydes and peroxyacetyl nitrates); nitrogen dioxide (cause of the “whiskey-brown” color in the Los-Angeles atmosphere); and fine particles that cause adverse health effects, reduce visibility, and cause

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Rodea-Palomares, Ismael, Miguel Gonzalez-Pleiter, Soledad Gonzalo, et al. "Hidden drivers of low-dose pharmaceutical pollutant mixtures revealed by the novel GSA-QHTS screening method." Science Advances 2, no. 9 (2016): e1601272. http://dx.doi.org/10.1126/sciadv.1601272.

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The ecological impacts of emerging pollutants such as pharmaceuticals are not well understood. The lack of experimental approaches for the identification of pollutant effects in realistic settings (that is, low doses, complex mixtures, and variable environmental conditions) supports the widespread perception that these effects are often unpredictable. To address this, we developed a novel screening method (GSA-QHTS) that couples the computational power of global sensitivity analysis (GSA) with the experimental efficiency of quantitative high-throughput screening (QHTS). We present a case study

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Mariani, M. L., M. D. Labas, R. J. Brandi, A. E. Cassano, and C. S. Zalazar. "Degradation of a mixture of pollutants in water using the UV/H2O2 process." Water Science and Technology 61, no. 12 (2010): 3026–32. http://dx.doi.org/10.2166/wst.2010.255.

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The degradation reaction of a simple mixture of pollutants (dichloroacetic acid + formic acid) employing H2O2 and UVC radiation (253.7 nm) has been studied in a well-mixed reactor which operates inside a recycling system. The aim of this work is to develop a systematic methodology for treating degradation of mixtures of pollutants, starting from a rather manageable system to more complex aggregates. In this contribution, the effects of different variables such as hydrogen peroxide/pollutant mixture initial concentration ratio, pH and incident radiation at the reactor wall were studied. The res

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Shi, Hanxu, Qiang Zhou, Hongjuan Zhang, et al. "The Combined Effects of Hourly Multi-Pollutant on the Risk of Ambulance Emergency Calls: A Seven-Year Time Series Study." Toxics 11, no. 11 (2023): 895. http://dx.doi.org/10.3390/toxics11110895.

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Background: Ambulance emergency calls (AECs) are seen as a more suitable metric for syndromic surveillance due to their heightened sensitivity in reflecting the health impacts of air pollutants. Limited evidence has emphasized the combined effect of hourly air pollutants on AECs. This study aims to investigate the combined effects of multipollutants (i.e., PM2.5, PM10, Ozone, NO2, and SO2) on all-cause and cause-specific AECs by using the quantile g-computation method. Methods: We used ambulance emergency dispatch data, air pollutant data, and meteorological data from between 1 January 2013 an

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Masselot, Pierre, Haidong Kan, Shailesh K. Kharol, et al. "Air pollution mixture complexity and its effect on PM2.5-related mortality: A multicountry time-series study in 264 cities." Environmental Epidemiology 8, no. 6 (2024): e342. http://dx.doi.org/10.1097/ee9.0000000000000342.

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Background: Fine particulate matter (PM2.5) occurs within a mixture of other pollutant gases that interact and impact its composition and toxicity. To characterize the local toxicity of PM2.5, it is useful to have an index that accounts for the whole pollutant mix, including gaseous pollutants. We consider a recently proposed pollutant mixture complexity index (PMCI) to evaluate to which extent it relates to PM2.5 toxicity. Methods: The PMCI is constructed as an index spanning seven different pollutants, relative to the PM2.5 levels. We consider a standard two-stage analysis using data from 26

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Gruhlke, Pascal, Christian Beck, Bertram Janus, and Andreas M. Kempf. "LES Analysis of CO Emissions from a High Pressure Siemens Gas Turbine Prototype Combustor at Part Load." Energies 13, no. 21 (2020): 5751. http://dx.doi.org/10.3390/en13215751.

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This work contributes to the understanding of mechanisms that lead to increased carbon monoxide (CO) concentrations in gas turbine combustion systems. Large-eddy simulations (LES) of a full scale high pressure prototype Siemens gas turbine combustor at three staged part load operating conditions are presented, demonstrating the ability to predict carbon monoxide pollutants from a complex technical system by investigating sources of incomplete CO oxidation. Analytically reduced chemistry is applied for the accurate pollutant prediction together with the dynamic thickened flame model. LES result

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Grum, M., R. H. Aalderink, L. Lijklema, and H. Spliid. "The underlying structure of systematic variations in the event mean concentrations of pollutants in urban runoff." Water Science and Technology 36, no. 8-9 (1997): 135–40. http://dx.doi.org/10.2166/wst.1997.0656.

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Urban runoff pollution can essentially be characterised by fluid quantities and pollutant concentrations. It has been possible to construct models accounting for variations in runoff quantities with some success. However, although several pollutant storage and transport mechanisms have been postulated there still remains substantial unexplained variation in pollutant concentrations. Through a series of well established multivariate pattern recognition techniques the present study has aimed at disclosing the underlying structure of systematic variations in the event mean concentrations (EMC) of

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Hammes, Gabriela, and Liseane Padilha Thives. "Porous Asphalt Mixture with Improved Fatigue Resistance and Stormwater Pollutant Reduction in Urban Road Pavement." Water 15, no. 16 (2023): 2962. http://dx.doi.org/10.3390/w15162962.

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One alternative measure to minimise the stormwater runoff volume and its pollutants and reduce impervious areas is to use permeable pavement. However, due to weak mechanical performance under heavy-load traffic related to fatigue resistance, porous mixtures and permeable pavements have restricted applications, i.e., parking lots and low-traffic roads. This work aims to evaluate the fatigue resistance of a porous asphalt mixture produced with highly modified asphalt (HiMA) and its potential contribution to reducing stormwater runoff and pollutants. In order to estimate the capability of runoff

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Дисертації з теми "Pollutant mixture"

GASTALDI, PATRICK. "INFLUENCE OF THE MIXTURE PREPARATION ON THE COMBUSTION IN DIRECT INJECTION ENGINES." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48534.

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During the last two centuries, the development of the internal combustion engine has followed the evolution of the customer expectations. From the race for pure performances, high power, and fun to drive, perfectly well illustrated by the fabulous Mercedes 300 SL, the focus moved towards fuel efficient engines under the pressure of the still increasing oil prices. The well-known Diesel powertrain, up to this period limited to industrial vehicles, suddenly became the object of many researches, even for automotive manufacturers, specialists for sport cars. Technologic developments, mainly

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Maio, Giampaolo. "Pollutant prediction in numerical simulations of laminar and turbulent flames using virtual chemistry." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASC003.

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La CFD est aujourd’hui utilisée par les ingénieurs de recherche comme un outil numérique pour concevoir et optimiser les dispositifs de combustion avancés qui sont utilisés dans les systèmes de conversion d’énergie. L’un des principaux objectifs de la recherche, dans le développement d’outils numériques avancés pour la CFD, est l’identification d’un modèle réduite de cinitique chimique de la combustion qui reproduit la structure de la flamme et la formation de polluants avec un coût de calcul abordable. En particulier, la prédiction de la formation de polluants est une tâche difficile lorsque

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Saunier, Elise. "Impact des xénobiotiques sur la progression tumorale des cellules cancéreuses humaines." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCB148.

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L’impact de l’environnement dans le développement de certaines pathologies est avéré bien qu’il soit difficile à évaluer. L’Homme est chroniquement exposé à des cocktails de xénobiotiques -des molécules étrangères à l’organisme- dont la nature, la concentration et les interactions sont variables avec des effets néfastes ou bénéfiques pour la santé humaine. Parmi ceux-ci, les polluants environnementaux jouent un rôle non négligeable dans l’apparition de certains cancers. Au contraire, des molécules naturelles comme le resvératrol, possède des propriétés anti-cancéreuses. Au cours de la cancérog

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Pak, Sun. "Adaptation, combustion et limites pauvres d'un moteur à allumage commandé au gaz naturel obtenu par conversion d'un diesel faible puissance." Valenciennes, 1994. https://ged.uphf.fr/nuxeo/site/esupversions/1d663861-db36-4829-9d80-aa7826a05ebe.

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Un moteur diesel faible puissance a était converti en A. C. Puis alimenté au gaz naturel. Les caractéristiques générales de la combustion (délais, durées de combustion, dispersion cyclique) ont été étudiées en fonction du rapport air-gaz, de l'avance à l'allumage, et du type de bougie ainsi que les performances du moteur. Pour le comportement en mélange très pauvre, nous avons déterminé les limites opératoires, analyse le déroulement de la combustion et observe les variations de pression. En utilisant un générateur de turbulence en forme de cône, nous avons reculé les limites pauvres et réduit

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Morris, Kenneth Robert 1951. "THE SOLUBILITY OF HYDROPHOBIC POLLUTANTS IN WATER-COSOLVENT MIXTURES." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276659.

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Santos, Helton Saulo Bezerra dos. "Essays on Birnbaum-Saunders models." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/87375.

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Nessa tese apresentamos três diferentes aplicações dos modelos Birnbaum-Saunders. No capítulo 2 introduzimos um novo método por função-núcleo não-paramétrico para a estimação de densidades assimétricas, baseado nas distribuições Birnbaum-Saunders generalizadas assimétricas. Funções-núcleo baseadas nessas distribuições têm a vantagem de fornecer flexibilidade nos níveis de assimetria e curtose. Em adição, os estimadores da densidade por função-núcleo Birnbaum-Saunders gene-ralizadas assimétricas são livres de viés na fronteira e alcançam a taxa ótima de convergência para o erro quadrático integ

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Astanei, Dragoş-George. "Improving the performances of the combustion engines by improving the ignition system." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2073/document.

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Face aux normes actuelles et futures, de plus en plus drastiques, concernant les émissions de polluants, les constructeurs automobiles cherchent en permanence à améliorer l'efficacité des moteurs à allumage commandé. Une des solutions les plus efficaces et applicables pour diminuer la quantité de polluants émis dans les gaz d’échappement (HC, CO, NOx) et réduire la consommation de carburant, est d’utiliser un mélange très pauvre (richesse du mélange inférieure à 0,6). Toutefois, ce concept de fonctionnement est limité par les systèmes d'allumage classiques qui ne peuvent pas garantir un alluma

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Rydholm, Fredrik. "Sorption of Stormwater Pollutants for Five Material Mixtures: A batch Equlibrium Study." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-86150.

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Blue-green infrastructure have been more lucrative during the last 30 years, since urbanizationbrings more impervious surfaces that increases stormwater runoff volumes. Amongst thedifferent blue-green infrastructures there are e.g., constructed wetlands and swales. Blue-greeninfrastructure means more natural management of the stormwater, such as infiltration. Forinfiltration of water, the hydraulic conductivity is an important parameter, but also the abilityto remove dissolved pollutants. In literature, various studies of filter materials are only testedfor single dissolved pollutants, which m

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DI, NATALE Marilena Vita. "Impacts of weathered microplastics on bioavailability of pollutants in Paracentrotus lividus and Danio rerio: molecular and ecotoxicological approaches." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/560342.

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Plastic materials provide countless applications in every sector of human life, from food and health preservation to textiles and electronics industry (Cole et al., 2011;Thompson et al., 2009) which is resulting in huge amount of plastic waste. Recently, it was estimated that plastics account for the 80-90% of the whole marine litter (Derraik, 2002) and over 5 trillion microscopic plastic fragments are floating on the surface of the World Oceans (Eriksen et al., 2014). The predominant form of marine plastic litter is called “Microplastics (MPs)", terminology by Thompson et al. 2004, used to

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Jeong, Hyon Sun. "Effects of Persistent Organic Pollutants and Their Mixtures on Biotransformation and Oxidative Stress in Zebrafish Embryo." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-52495.

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Persistent organic pollutants (POPs) cause significant effects on organisms due to their resistance to environmental degradation and specific toxic responses. Although POPs toxicities were linked to oxidative stress in the previous studies, there are few POPs studies that link them with oxidative stress in zebrafish during development. Aim of this study is to investigate effect of selected POPs on expression of genes involved in oxidative stress response and biotransformation of xenobiotics in zebrafish. Zebrafish embryos in 96 hours’ post-fertilization were exposed to selected POPs and their

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Книги з теми "Pollutant mixture"

Brusseau, M. L. Complex mixtures and groundwater quality. U.S. Environmental Protection Agency, Office of Research and Development, Robert S. Kerr Environmental Research Laboratory, 1993.

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Great Britain. Advisory Group on the Medical Aspects of Air Pollution Episodes., ed. Health effects of exposures to mixtures of air pollutants: Fourth report. Stationery Office, 1995.

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1940-, Yang Raymond Shih-hsien, ed. Toxicology of chemical mixtures: Case studies, mechanisms, and novel approaches. Academic Press, 1994.

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D, Waters Michael, and International Conference on Environmental Mutagens (5th : 1989 : Cleveland, Ohio), eds. Genetic toxicology of complex mixtures. Plenum Press, 1990.

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S, Sandhu Shahbeg, ed. Short-term bioassays in the analysis of complex environmental mixtures V. Plenum Press, 1987.

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Smedley, Julia, Finlay Dick, and Steven Sadhra. Monitoring exposure. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199651627.003.0030.

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Sample types for workplace pollutants 604Selection of sampling and analysis methods 606Workplace exposure survey types 608Exposure variability 610Designing exposure monitoring programmes 612Data interpretation 1: calculating TWA concentrations 614Data interpretation 2: exposure to chemical mixtures 616Dermal exposure 617Conceptual model of dermal exposure ...

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(Editor), Michael D. Waters, F. Bernhard Daniel (Editor), Joellen Lewtas (Editor), Martha M. Moore (Editor), and Stephen Nesnow (Editor), eds. Genetic Toxicology of Complex Mixtures (Environmental Science Research). Springer, 1990.

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S, Sandhu Shahbeg, ed. Short-termbioassays in the analysis of complex environmental mixtures V. Plenum, 1987.

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Short-Term Bioassays in the Analysis of Complex Environmental Mixtures: Part IV (Environmental Science Research). Springer, 1985.

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Frid, Christopher L. J., and Bryony A. Caswell. Marine Pollution. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198726289.001.0001.

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We use more than 100 000 chemicals in our daily lives to promote health, treat disease, facilitate transportation, use in industrial processes, grow food and access clean water. While these developments have improved human lives, many of these compounds ultimately end up in our seas and oceans where they represent a threat to marine life, ourselves and our continued use of the oceans to treat our waste, provide us with food and offer us recreation. Many of the pollution problems of previous decades seem to have been resolved, in the developed world, or at least managed to minimise their enviro

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Частини книг з теми "Pollutant mixture"

Holmes, Heather A., Xinxin Zhai, Jeremiah Redman, et al. "Improved Spatiotemporal Source-Based Air Pollutant Mixture Characterization for Health Studies." In Air Pollution Modeling and its Application XXIII. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04379-1_4.

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Aitouche, Abdel, Raouf Mobasheri, Xiang Li, et al. "River Project, An Innovative Way to Reduce Pollution on Riverboats." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_80.

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AbstractConsidering the EU environmental standards for non-road mobile machinery (NRMM), reducing pollutant emissions from inland waterway vessels is becoming increasingly important. The RIVER research project aims to find solutions to achieve nitrogen-free combustion in waterways transportation systems while also emitting zero CO2 emission. RIVER addresses these issues using Carbon Capture and Storage (CCS) technology and Oxy-fuel combustion (OFC). The project is co-financed by the European Union, as part of the Interreg North-West Europe program. There are ten partners involved in this proje

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Tahtouh, Toni, Mathieu André, Giuseppe Castellano, et al. "A Path toward a New Generation of Green Hybrid Powertrain: The PHOENICE Project." In Lecture Notes in Mobility. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89444-2_25.

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Abstract Nowadays the synergic use of powertrain electrification and innovative Internal Combustion Engine (ICE) technologies may represent a valuable solution to face the concurrent tightening of pollutant emission limits and CO2 targets and to shift toward a more sustainable mobility. In this context, hybrid powertrains are seen as the main near-term solution to these challenges of reducing CO2 and pollutant emissions as well as meeting the demands of the global market in the near future. In such a framework the PHOENICE project aims at assessing the capabilities of a plug-in hybrid powertra

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Magnussen, H., and R. Jörres. "Inhalation of Pollutants and Pollutant Mixtures in Subjects with Bronchial Hyperresponsiveness." In Advances in Controlled Clinical Inhalation Studies. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77176-7_15.

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Schuetzle, Dennis, and Joan M. Daisey. "Identification of Genotoxic Agents in Complex Mixtures of Air Pollutants." In Genetic Toxicology of Complex Mixtures. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5850-3_2.

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Claxton, Larry D., T. E. Kleindienst, Erica Perry, and Larry T. Cupitt. "Assessment of the Mutagenicity of Volatile Organic Air Pollutants Before and After Atmospheric Transformation." In Genetic Toxicology of Complex Mixtures. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5850-3_7.

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McLanahan, Eva D., and Jeffrey W. Fisher. "Thyroid-Active Environmental Pollutants and Their Interactions on the Hypothalamic-Pituitary-Thyroid Axis." In Principles and Practice of Mixtures Toxicology. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527630196.ch19.

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Payrissat, M., H. Rau, and G. Serrini. "Use of Air — SO2 Mixtures for Intercomparison of SO2 Monitors in the EEC." In Physico-Chemical Behaviour of Atmospheric Pollutants. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3841-0_10.

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Ormrod, D. P., J. L. Deveau, O. B. Allen, and D. W. Beckerson. "Crop Responses to Ozone — Sulphur Dioxide Mixtures." In Effects of Atmospheric Pollutants on Forests, Wetlands and Agricultural Ecosystems. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-70874-9_33.

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Chirila, Elisabeta, and Camelia Draghici. "Risk Assessment of Mixtures of Chemical Pollutants in the Environment." In Exposure and Risk Assessment of Chemical Pollution — Contemporary Methodology. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2335-3_4.

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Тези доповідей конференцій з теми "Pollutant mixture"

Georgescu, Constantin, Valentin Amortila, and Cristian Muntenita. "NEURAL NETWORK MODELING OF THERMAL ENGINES POWERED BY ALTERNATIVE FUELS FOR THE PURPOSE OF REDUCING ATMOSPHERIC POLLUTION." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/4.1/s19.55.

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This research investigates the increasing use of alternative fuels in internal combustion engines, a phenomenon that has experienced significant growth in recent decades due to the heightened interest in reducing atmospheric pollution. Although the pollution level associated with alternative fuels is generally lower compared to fossil fuels, it is essential to emphasize that the pollutant impact of alcohol-based fuels depends on various factors, such as engine technology, mixture composition, fuel quality, and usage patterns. Thus, this study analyzes the influence of the alcohol proportion in

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Ilie, Mihaela. "MATHEMATICAL MODELLING OF POLLUTANT DISPERSION IN ATMOSPHERE RESULTING FROM AN ASPHALT MIXTURE PREPARATION PLANT." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017h/43/s19.054.

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Luu, Tan-Phong, Nasser Darabiha, and Benoît Fiorina. "Development of a Hybrid Tabulated-Virtual Chemistry Model for Pollutant Formation Prediction." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-101732.

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Abstract In the context of energy transition, numerical models that can accurately describe pollutant formation are needed for designing novel combustion chambers. However, due to the stiffness of the chemistry describing pollutants, modeling chemical kinetics is a challenging issue. Simplified models such as flamelet-based tabulated chemistry allow a good resolution of the heat release rate and the temperature profile but usually fail in predicting pollutants in practical burners. The virtual chemistry method, recently developed at the EM2C laboratory, is an alternative technique to the tabul

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Poeschl, G., W. Ruhkamp, and H. Pfost. "Combustion With Low Pollutant Emissions of Liquid Fuels in Gas Turbines by Premixing and Prevaporization." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-443.

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This paper reports about experiments on PPM-combustion. Experiments were carried out to check the dependence between homogeneity of the mixture and pollutant emissions. An ideally homogeneous mixture could be achieved with a static mixer. Cool-flame reactions were observed and their dependences on pressure, temperature and fuel-air ratio were determinated.

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Bedoya, Cesar, Peter Habisreuther, Nikolaos Zarzalis, Chockalingam Prathap, and Hadi Ebrahimi. "Experimental Study on the Influence of Pressure on the Flame Stabilization in Porous Inert Media (PIM)." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68234.

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Porous burners offer a possible solution to attain higher combustion stability under premixed conditions with ultra low pollutant emissions. To analyze the feasibility of PIM (porous inert media) in energy conversion processes, studies at elevated pressure have been carried out. In the present work, burning velocity of natural gas-air mixtures for lean mixture conditions at elevated pressure is obtained in a conical PIM by determining the flame location using thermocouples. Pressure, thermal power, equivalence ratio and initial temperature were varied in order to study their effect on the flam

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Salehi-Khojin, Amin, Vahab Pirouzpanah, Mohammad Mahinfalah, and Steve Weinzierd. "Effect of Cooled and Hot EGR on Performance and Emission Characteristics of S-I Engine." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62106.

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Exhaust gas recirculation (EGR) is the most effective and practical method for reduction of NOx emission in Internal Combustion Engines. However, improper application of EGR in the engine causes higher power loss, excessive specific fuel consumption (SFC) and an increase in the concentration of other pollutants. For this reason, the amount and temperature of EGR must be tailored for each engine in order to get optimum performance and emission results. In this research work, after comparison of hot and cooled EGR for an S-I engine, pollutant behavior has also been studied around Dew point tempe

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Ghenai, Chaouki. "CFD Analysis of Coal Combustion With Oxygen/CO2/H2O Mixture." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88470.

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Coal combustion with oxygen is considered one of the most effective methods to improve thermal efficiency, reduce pollutant emissions such as NOX, and facilitate capture of CO2 pollutant from flue gas. This paper presents calculations of oxygen coal combustion with flue gas recirculation. The coal is burned in oxygen/CO2/H20 mixture. In addition to solving transport equations for the continuous phase (gas), a discrete second phase (spherical particles) is simulated in the Lagrangian frame of reference. Reaction is modeled by a mixture fractions/PDF approach. Discrete phase modeling is used for

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Martins-Costa, Maria Laura, and Roge´rio M. Saldanha da Gama. "Simulation of a Pollutant Transport in an Atmosphere With Shock Waves." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41220.

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In this work a model for transport phenomena in an environment representing the atmosphere containing a pollutant is presented by considering mass and linear momentum conservation for the air-pollutant mixture as well as the mass balance for the pollutant. The resulting mathematical description consists of a nonlinear system of hyperbolic equations that admits discontinuities in addition to smooth or classical solutions. The Riemann problem associated with a class of problems describing the transport of a pollutant in an ideal gas with constant temperature with a discontinuous mass density dis

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Almoayed, Nawaf N., Golam R. Khan, and Mohammed N. Afsar. "Identification of pollutant gases from an atmospheric mixture using high resolution Dispersive Fourier Transformation Spectroscopy." In 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008). IEEE, 2008. http://dx.doi.org/10.1109/icimw.2008.4665702.

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Musu, E., R. Rossi, and R. Gentili. "Improvements in Efficiency and Mixture Formation for an Innovative Diesel HCCI Concept." In ASME 2009 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/icef2009-14046.

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Homogeneous-charge, compression-ignition (HCCI) combustion is triggered by spontaneous ignition in dilute homogeneous mixtures. The combustion rate must be reduced by suitable solutions such as high rates of Exhaust Gas Recirculation (EGR) and/or lean mixtures. HCCI is considered to be a very effective way to reduce engine pollutant emissions, however only a few production engines have been built. HCCI combustion currently cannot be extended to the whole engine operating range, especially to high loads, since the use of EGR displaces air from the cylinder, limiting engine mean effective pressu

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Звіти організацій з теми "Pollutant mixture"

Beurlot, Kyle, and Timothy Jacobs. PR457-242002-R01 Hydrogen and Natural Gas Mixtures in 2 Stroke Engines for Methane Reductions. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000108.

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Large-bore natural gas two-stroke engines with lean-burn technology have been integral to the North American pipeline network for many years and will remain crucial for future gas transportation. As research focuses on achieving lower lean ignition limits, pre-combustion chambers have gained attention as a promising method to enhance combustion stability and engine reliability. However, retrofitting existing platforms with pre-combustion chambers may not always be financially viable, which calls for further exploration of alternative technologies that could reduce methane emissions from two-st

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Suarez Loor, J., M. Lazo, A. Rigail, E. Adrian, and J. Vera. Processing of thermoplastic elastomers (TPE) by in-situ ground tire rubber (GTR) vulcanization using waste ethylene-vinyl-acetate (wEVA) and dicumyl peroxide (DCP). Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.re.2.

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Tire rubber waste (TRW) is a complex mixture of materials, such as rubbers, steel, textile fibers, carbon black, and other additives. Its polluting capacity is a severe environmental problem, especially in landfills and waste management processes. As a practical solution to mitigate TRW’s environmental impact, thermoplastic elastomers (TPE) commonly reuse the ground tire rubber (GTR). This work presents an in-situ devulcanization of ground tire rubber (DGTR) and re-vulcanization of devulcanized ground tire rubber using dicumyl peroxide (DCP) and waste ethylene-vinyl-acetate (wEVA). The GTR was

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