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DTSTART:20160101T000000
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DTSTART;TZID=Asia/Macau:20161118T143000
DTEND;TZID=Asia/Macau:20161118T153000
DTSTAMP:20260610T103541
CREATED:20161117T040034Z
LAST-MODIFIED:20251125T032019Z
UID:16225-1479479400-1479483000@www.fst.um.edu.mo
SUMMARY:Understanding Secondary organic aerosol (SOA) – Applications of a Chemical Ionization Mass Spectrometer
DESCRIPTION:Speaker\nProf. Mattias Hallquist\nProfessor\nDepartment of Chemistry and Molecular Biology\nUniversity of Gothenburg\nSweden \nAbstract\nThe secondary organic aerosol (SOA) represents a dominant fraction of the tropospheric aerosol. Still\, the current level of understanding of SOA processes is remarkably low compared to other processes in aerosol science\, i.e. modelled SOA based on experimental findings and existing theory do not capture the variability of observed SOA loadings. Lately\, models have been improved by adding sources/processes to reduce the bias but still there is no model that is capable of describing SOA satisfactorily while capturing a large temporal and spatial variability. The uncertainties associated with SOA relates to its formation from atmospheric oxidation of volatile organic compounds (VOCs). The complexity is compounded further by the fact that each VOC can undergo a number of atmospheric degradation processes to produce a range of oxidised products\, which may or may not contribute to SOA formation and growth. \nUsing High-Resolution Chemical Ionisation ToF-MS (HR-CI-ToF-MS)\, with high resolution (>5000m/Δm)\, makes it possible to distinguish the molecular identity of numerous compounds in complex mixtures for both gas and particle phase. The instrument applies soft ionisation limiting the fragmentation and one can usually identify the parent molecules. The speaker’s research group has since a few years applied HR-CI-ToF-MS to measurements both in laboratory\, for emission studies and in field observations. The presentation will include a survey of SOA with some examples from these recent studies. \nBiography\nProfessor Mattias Hallquist has been active in the field of atmospheric science since 1993\, when doing a PhD with emphasis on chemical kinetics and mechanisms of organic compounds. After a postdoc session at the University of Cambridge he returned to the University of Gothenburg (GU) at Department of Chemistry and Molecular Biology. Currently\, he is leading the secondary organic aerosols (SOA) and traffic emission group and coordinating a multi-project framework (5 year project) on Photochemical Smog in China (Research-Policy). Professor Hallquist is supported by the strategic area: sustainable transport initiative where the focus is air pollution research in developing countries. Professor Hallquist has a profound expertise in aerosol and atmospheric chemistry and is coordinating an initiative on Atmosphere-Climate-Ecosystems at GU.
URL:https://www.fst.um.edu.mo/event/understanding-secondary-organic-aerosol-soa-applications-of-a-chemical-ionization-mass-spectrometer/
LOCATION:E11-1009
CATEGORIES:cee_events
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DTSTART;TZID=Asia/Macau:20161125T170000
DTEND;TZID=Asia/Macau:20161125T183000
DTSTAMP:20260610T103541
CREATED:20161114T040004Z
LAST-MODIFIED:20251125T032019Z
UID:16232-1480093200-1480098600@www.fst.um.edu.mo
SUMMARY:Is Your SHS Corner Radius Good Enough? Homogeneity\, Solving The Testing Problems
DESCRIPTION:Speaker\nMr. Steve Whitfield\nManager of Customer Technical Services\nTata Steel Group \nAbstract\nHot Finished Structural Hollow Sections in building construction has become more and more popular owing to the architecturally aesthetic appearance and the structural efficiency under compression loading. For critical applications the correct use of Hot Finished Structural Hollow Sections can lead to safer use plus reduce member sizes significantly\, rendering attractive visual and spacious impacts on the building layout. \nHot Finished Structural Hollow sections are used for all forms of fabrication from the basic requirement through to the critical applications such as building’s and offshore. It is important to know the different types of hollow sections including the specification and traceability. The half-day seminar will cover topics on how to differentiate the Hot Finished Structural Hollow Sections\, different characteristics such as Homogeneity and small corner radii offer superior section properties\, reduced fabrication costs and improved appearance. Engineers and designers in private sector and government who are working in building and construction industry are most suitable to attend the seminar as the use of Hot Finished Structural Hollow Sections in construction would lead to economical and efficient design solutions. Lecture notes will be provided. \nBiography\nMr. Steve Whitfield\, BEng\, CEng\, MIStructE\, is the Manager of Customer Technical Services from Tata Steel Group and the chartered member of the Institute of Structural Engineers. He graduated from the University of Bradford. He has been working in the construction field for many years. He is familiar to Eurocode and other European Standards and can provide design guidance of steel hollow sections and fabrication. Steve held many useful seminars for engineers and specialists with varying knowledge of steel hollow sections\, tubular steelwork and Tata Steel Design software among UK\, India and Singapore.
URL:https://www.fst.um.edu.mo/event/is-your-shs-corner-radius-good-enough-homogeneity-solving-the-testing-problems/
LOCATION:E11-G015
CATEGORIES:cee_events
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