Academic literature on the topic 'Photo-chemical process modelling'

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Journal articles on the topic "Photo-chemical process modelling"

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Segarra-Martí, Javier, Sara M. Nouri, and Michael J. Bearpark. "Modelling Photoionisations in Tautomeric DNA Nucleobase Derivatives 7H-Adenine and 7H-Guanine: Ultrafast Decay and Photostability." Photochem 1, no. 2 (2021): 287–301. http://dx.doi.org/10.3390/photochem1020018.

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The study of radiation effects in DNA is a multidisciplinary endeavour, connecting the physical, chemical and biological sciences. Despite being mostly filtered by the ozone layer, sunlight radiation is still expected to (photo)ionise DNA in sizeable yields, triggering an electron removal process and the formation of potentially reactive cationic species. In this manuscript, photoionisation decay channels of important DNA tautomeric derivatives, 7H-adenine and 7H-guanine, are characterised with accurate CASSCF/XMS-CASPT2 theoretical methods. These simulation techniques place the onset of ionis
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Bock, Josué, Joël Savarino, and Ghislain Picard. "Air–snow exchange of nitrate: a modelling approach to investigate physicochemical processes in surface snow at Dome C, Antarctica." Atmospheric Chemistry and Physics 16, no. 19 (2016): 12531–50. http://dx.doi.org/10.5194/acp-16-12531-2016.

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Abstract. Snowpack is a multiphase (photo)chemical reactor that strongly influences the air composition in polar and snow-covered regions. Snowpack plays a special role in the nitrogen cycle, as it has been shown that nitrate undergoes numerous recycling stages (including photolysis) in the snow before being permanently buried in the ice. However, the current understanding of these physicochemical processes remains very poor. Several modelling studies have attempted to reproduce (photo)chemical reactions inside snow grains, but these have relied on strong assumptions to characterise snow react
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Arashiro, Larissa T., Angelica M. Rada-Ariza, Meng Wang, Peter van der Steen, and Sarina J. Ergas. "Modelling shortcut nitrogen removal from wastewater using an algal–bacterial consortium." Water Science and Technology 75, no. 4 (2016): 782–92. http://dx.doi.org/10.2166/wst.2016.561.

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A shortcut nitrogen removal process was investigated for treatment of high ammonium strength wastewater using an algal–bacterial consortium in photo-sequencing batch reactors (PSBRs). In this process, algae provide oxygen for nitritation during the light period, while denitritation takes place during the dark (anoxic) period, reducing overall energy and chemical requirements. Two PSBRs were operated at different solids retention times (SRTs) and fed with a high ammonium concentration wastewater (264 mg NH4+-N L−1), with a ‘12 hour on, 12 hour off’ light cycle, and an average surface light inte
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Velilla-Prieto, L., J. Cernicharo, M. Agúndez та ін. "IRC + 10°216 mass loss properties through the study of λ3 mm emission". Astronomy & Astrophysics 629 (вересень 2019): A146. http://dx.doi.org/10.1051/0004-6361/201834717.

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Low-mass evolved stars are major contributors to interstellar medium enrichment as a consequence of the intense mass-loss process these stars experience at the end of their lives. The study of the gas in the envelopes surrounding asymptotic giant branch (AGB) stars through observations in the millimetre wavelength range provides information about the history and nature of these molecular factories. Here we present ALMA observations at subarsecond resolution, complemented with IRAM-30 m data, of several lines of SiO, SiS, and CS towards the best-studied AGB circumstellar envelope, IRC + 10°216.
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Cüce, Hüseyin, and Duygu Özçelik. "Application of Machine Learning (ML) and Artificial Intelligence (AI)-Based Tools for Modelling and Enhancing Sustainable Optimization of the Classical/Photo-Fenton Processes for the Landfill Leachate Treatment." Sustainability 14, no. 18 (2022): 11261. http://dx.doi.org/10.3390/su141811261.

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This study presents a machine learning (ML)/artificial intelligence (AI)-based perspective to reliably predict and enhance the treatment efficiency of landfill leachate by classical-Fenton (c-Fenton) and photo-Fenton (p-Fenton) processes. This experiment also sought to lower treatment costs by evaluating the impact of using different numbers of UV-c (254 nm) lamps during p-Fenton processes, as well as to develop a sustainable process design for landfill leachate. In the modeling stage, the radial basis function neural network (RBFN), the feed forward neural network (FFNN), and the support vect
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Alimi, Oyeniyi A., Edson L. Meyer, and Olufemi I. Olayiwola. "Solar Photovoltaic Modules’ Performance Reliability and Degradation Analysis—A Review." Energies 15, no. 16 (2022): 5964. http://dx.doi.org/10.3390/en15165964.

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The current geometric increase in the global deployment of solar photovoltaic (PV) modules, both at utility-scale and residential roof-top systems, is majorly attributed to its affordability, scalability, long-term warranty and, most importantly, the continuous reduction in the levelized cost of electricity (LCOE) of solar PV in numerous countries. In addition, PV deployment is expected to continue this growth trend as energy portfolio globally shifts towards cleaner energy technologies. However, irrespective of the PV module type/material and component technology, the modules are exposed to a
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Casado, Cintia, José Moreno-SanSegundo, Irene De la Obra, Belén Esteban García, José Antonio Sánchez Pérez, and Javier Marugán. "Mechanistic modelling of wastewater disinfection by the photo-Fenton process at circumneutral pH." Chemical Engineering Journal 403 (January 2021): 126335. http://dx.doi.org/10.1016/j.cej.2020.126335.

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Csögör, Zsuzsa, Michael Herrenbauer, Iris Perner, Karsten Schmidt, and Clemens Posten. "Design of a photo-bioreactor for modelling purposes." Chemical Engineering and Processing: Process Intensification 38, no. 4-6 (1999): 517–23. http://dx.doi.org/10.1016/s0255-2701(99)00048-3.

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Villota, Natalia, Luis Miguel Camarero, Jose Maria Lomas, and Mikel Legaristi. "Kinetic Modelling of Photoconversion of Phenol by a Photo-Fenton Reagent and UV." International Journal of Chemical Reactor Engineering 12, no. 1 (2014): 405–16. http://dx.doi.org/10.1515/ijcre-2013-0130.

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Abstract This study analyses the oxidation of phenol using Fenton reagent in presence of ultraviolet light, enhancing the mineralization capacity of the treatment. Phenol oxidation generates reaction intermediates more toxic and refractory than phenol itself. Thus, the reaction must be carried out under harder conditions, leading these compounds to biodegradable acids that can be dumped into public sewages. Then, this paper considers a complete kinetic modelling of the phenol oxidation stages, differentiating the formation rate of species generated through ortho, meta and para pathways. The mo
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Hakim, Zainab Q., Scott Archer-Nicholls, Gufran Beig, et al. "Evaluation of tropospheric ozone and ozone precursors in simulations from the HTAPII and CCMI model intercomparisons – a focus on the Indian subcontinent." Atmospheric Chemistry and Physics 19, no. 9 (2019): 6437–58. http://dx.doi.org/10.5194/acp-19-6437-2019.

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Abstract. Here we present results from an evaluation of model simulations from the International Hemispheric Transport of Air Pollution Phase II (HTAPII) and Chemistry Climate Model Initiative (CCMI) model inter-comparison projects against a comprehensive series of ground-based, aircraft and satellite observations of ozone mixing ratios made at various locations across India. The study focuses on the recent past (observations from 2008 to 2013, models from 2009–2010) as this is most pertinent to understanding the health impacts of ozone. To our understanding this is the most comprehensive eval
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Dissertations / Theses on the topic "Photo-chemical process modelling"

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Ogor, Florie. "Microfabrication 3D par polymérisation multiphotonique massivement parallélisée pour des applications photoniques et biomédicales." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0413.

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Les structures de taille submicroniques en 3D sont utiles dans de nombreux domaines (photonique,optique, biologie...). La fabrication de telles structures est difficile. La polymérisation multiphotonique est une technique adaptée, mais les temps de fabrication actuels sont longs (une journée pour fabriquer une structure d’un mm3), rendant la production industrielle couteuse et limitant le développement de ces structures. Nous présentons notre contribution au développement et à l’optimisation d’un procédé de fabrication rapide de ces structures par polymérisation multiphotonique massivement par
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Book chapters on the topic "Photo-chemical process modelling"

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Liu, Rui, Xiaowen Lin, Xi Chen, and Antonios Armaou. "Process Modelling for Photo-Iniferter RAFT with Multiple Chain Transfer Agents." In Computer Aided Chemical Engineering. Elsevier, 2024. http://dx.doi.org/10.1016/b978-0-443-28824-1.50049-1.

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Nasr Esfahani, Kourosh, Montserrat Pérez-Moya, and Moisès Graells. "Modelling and Parameter Fitting of the Dosage of Hydrogen Peroxide in a Photo-Fenton Process." In Computer Aided Chemical Engineering. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-323-95879-0.50063-1.

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