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Response of protonated, adduct, and fragmented ions in Vocus proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS)

Autor: F. Li, D. D. Huang, L. Tian, B. Yuan, W. Tan, L. Zhu, P. Ye, D. Worsnop, K. I. Hoi, K. M. Mok, Y. J. Li

Publikováno v: Atmospheric Measurement Techniques, Vol 17, Pp 2415-2427 (2024)

Volatile organic compounds (VOCs) affect secondary pollutant formation via active chemistry. Proton-transfer-reaction mass spectrometry (PTR-MS) is one of the most important techniques to study the highly variable spatial and temporal characteristics

Externí odkaz: https://doaj.org/article/53ce6eacaa214318a6b98e3d384b9435

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Akademický článek

Evolution and chemical characteristics of organic aerosols during wintertime PM2.5 episodes in Shanghai, China: insights gained from online measurements of organic molecular markers

Autor: S. Zhu, M. Zhou, L. Qiao, D. D. Huang, Q. Wang, S. Wang, Y. Gao, S. Jing, H. Wang, C. Chen, C. Huang, J. Z. Yu

Publikováno v: Atmospheric Chemistry and Physics, Vol 23, Pp 7551-7568 (2023)

Organic aerosol (OA) is a significant part of urban fine particulate matter (PM2.5), and a lack of detailed knowledge of their sources has increasingly hindered the improvement of air quality in China in recent years, as significant reductions have b

Externí odkaz: https://doaj.org/article/1c9b6bcdc2e746bcb0249e5265e5fd42

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Akademický článek

Measurement report: Underestimated reactive organic gases from residential combustion – insights from a near-complete speciation

Autor: Y. Gao, H. Wang, L. Yuan, S. Jing, B. Yuan, G. Shen, L. Zhu, A. Koss, Y. Li, Q. Wang, D. D. Huang, S. Zhu, S. Tao, S. Lou, C. Huang

Publikováno v: Atmospheric Chemistry and Physics, Vol 23, Pp 6633-6646 (2023)

Reactive organic gases (ROGs), as important precursors of secondary pollutants, are not well resolved as their chemical complexity has challenged their quantification in many studies. Here, a near-complete speciation of ROG emissions from residential

Externí odkaz: https://doaj.org/article/09a8932b46054ea6b16d7c592e53da39

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Akademický článek

Unambiguous identification of N-containing oxygenated organic molecules using a chemical-ionization Orbitrap (CI-Orbitrap) in an eastern Chinese megacity

Autor: Y. Lu, Y. Ma, D. D. Huang, S. Lou, S. Jing, Y. Gao, H. Wang, Y. Zhang, H. Chen, Y. Chang, N. Yan, J. Chen, C. George, M. Riva, C. Huang

Publikováno v: Atmospheric Chemistry and Physics, Vol 23, Pp 3233-3245 (2023)

Oxygenated organic molecules (OOMs) are dominated by the N-containing species in polluted urban environments. As N-containing OOMs, especially those with more than one nitrogen atom, prevail in the high m/z (mass-to-charge) range (m/z> 350 Th), unamb

Externí odkaz: https://doaj.org/article/804d2028ef7e4da7a643d7421eaa252c

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Akademický článek

Comparison of aqueous secondary organic aerosol (aqSOA) product distributions from guaiacol oxidation by non-phenolic and phenolic methoxybenzaldehydes as photosensitizers in the absence and presence of ammonium nitrate

Autor: B. R. G. Mabato, Y. J. Li, D. D. Huang, Y. Wang, C. K. Chan

Publikováno v: Atmospheric Chemistry and Physics, Vol 23, Pp 2859-2875 (2023)

Aromatic carbonyls (e.g., methoxybenzaldehydes), an important class of photosensitizers, are abundant in the atmosphere. Photosensitization and nitrate-mediated photo-oxidation can occur simultaneously, yet studies about their interactions, particula

Externí odkaz: https://doaj.org/article/c3cfbc06e4cc4f27998986d507009fe7

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Akademický článek

Chemical properties, sources and size-resolved hygroscopicity of submicron black-carbon-containing aerosols in urban Shanghai

Autor: S. Cui, D. D. Huang, Y. Wu, J. Wang, F. Shen, J. Xian, Y. Zhang, H. Wang, C. Huang, H. Liao, X. Ge

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 8073-8096 (2022)

Refractory black carbon (rBC) aerosols play an important role in air quality and climate change, yet highly time-resolved and detailed investigations on the physicochemical properties of rBC and its associated coating are still scarce. In this work,

Externí odkaz: https://doaj.org/article/f3f52fafef79485aa0e5d5abe0bf4fff

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Akademický článek

Aqueous secondary organic aerosol formation from the direct photosensitized oxidation of vanillin in the absence and presence of ammonium nitrate

Autor: B. R. G. Mabato, Y. Lyu, Y. Ji, Y. J. Li, D. D. Huang, X. Li, T. Nah, C. H. Lam, C. K. Chan

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 273-293 (2022)

Vanillin (VL), a phenolic aromatic carbonyl abundant in biomass burning emissions, forms triplet excited states (3VL∗) under simulated sunlight leading to aqueous secondary organic aerosol (aqSOA) formation. Nitrate and ammonium are among the main

Externí odkaz: https://doaj.org/article/78e51527ab1d45748365fba6f677d2b6

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Connection between the existence of first integrals and the painlevé property in two-dimensional lotka-volterra and quadratic systems

Autor: Keshlan S. Govinder, Marc R. Feix, P. G. L. Leach, D. D. Hua, Laurent Cairó

Publikováno v: Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences. 452:859-880

Taking advantage of the considerable amount of work done in the search for first integrals (invariants) for the two-dimensional Lotka-Volterra system and the quadratic system (lvs and qs), we compare the relations needed to exhibit invariants (one fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5fa2dfecf38d8d35cb6e3347f08b49e
https://doi.org/10.1098/rspa.1996.0043

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Prospects for spheromak fusion reactors

Autor: D. D. Hua, T.K. Fowler

Publikováno v: Journal of Fusion Energy. 14:181-185

The reactor study of Hagenson and Krakowski demonstrated the attractiveness of the spheromak as a compact fusion reactor, based on physics principles confirmed in CTX experiments in many respects. Most uncertain was the energy confinement time and th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7232fed818758060e1d7a87ece084323
https://doi.org/10.1007/bf02209055

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