0000000000623926

AUTHOR

David Simpson

showing 3 related works from this author

General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI)-integrating aerosol research from nano …

2011

In this paper we describe and summarize the main achievements of the European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January 2007 and ended on 31 December 2010 leaving a rich legacy including: (a) a comprehensive database with a year of observations of the physical, chemical and optical properties of aerosol particles over Europe, (b) comprehensive aerosol measurements in four developing countries, (c) a database of airborne measurements of aerosols and clouds over Europe during May 2008, (d) comprehensive modeling tools to study aerosol processes fron nano to global scale and their effects on climate and air quality. In addition a new Pan…

Atmospheric ScienceEuropean aerosol010504 meteorology & atmospheric sciencesaerosolAerosol radiative forcingClimateclouds010501 environmental sciencesAtmospheric sciences01 natural scienceslcsh:Chemistry/dk/atira/pure/sustainabledevelopmentgoals/climate_actionAerosol cloud11. SustainabilitySDG 13 - Climate Actionddc:550particle propertiesEnvironmental policysaturation vapor-pressureschemical-transport modelMiljövetenskapair qualitylcsh:QC1-999General Circulation Model/dk/atira/pure/subjectarea/asjc/1900/1902EUCAARIEELS - Earth Environmental and Life SciencesION-INDUCED NUCLEATIONChemical transport modelMeteorologyEarth & EnvironmentEnergy / Geological Survey NetherlandsSIMULATION CHAMBER SAPHIRnuclei number concentrationSECONDARY ORGANIC AEROSOLpure component propertiesAir quality indexEnvironmental quality0105 earth and related environmental sciencesPARTICLE FORMATION EVENTSAtmosphärische Spurenstoffe[CHIM.CATA]Chemical Sciences/CatalysisCAS - Climate Air and Sustainability[SDE.ES]Environmental Sciences/Environmental and SocietyFalconAerosollcsh:QD1-99913. Climate actionmixed-phase cloudsEnvironmental scienceatmospheric sulfuric-acidEnvironmental Scienceslcsh:Physics
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Second asymptomatic carotid surgery trial (ACST-2): a randomised comparison of carotid artery stenting versus carotid endarterectomy.

2021

Summary Background Among asymptomatic patients with severe carotid artery stenosis but no recent stroke or transient cerebral ischaemia, either carotid artery stenting (CAS) or carotid endarterectomy (CEA) can restore patency and reduce long-term stroke risks. However, from recent national registry data, each option causes about 1% procedural risk of disabling stroke or death. Comparison of their long-term protective effects requires large-scale randomised evidence. Methods ACST-2 is an international multicentre randomised trial of CAS versus CEA among asymptomatic patients with severe stenosis thought to require intervention, interpreted with all other relevant trials. Patients were eligib…

Malemedicine.medical_specialtyTime FactorsTime Factormedicine.medical_treatmentCarotid StenosiMEDLINECarotid endarterectomyRate ratioRisk AssessmentAsymptomaticlaw.inventionRandomized controlled triallawRisk Factorscarotid artery stenting (CAS); carotid endarterectomy (CEA)StentmedicineHumansCarotid StenosisStrokeEndarterectomyAgedEndarterectomy Carotidbusiness.industrycarotid arteryRisk FactorArticlesGeneral Medicinetrialmedicine.diseaseSettore MED/22 - CHIRURGIA VASCOLARESurgeryStrokeStenosisTreatment Outcomecarotid artery stenting (CAS)Settore MED/11 - MALATTIE DELL'APPARATO CARDIOVASCOLAREFemaleStentsHuman medicinemedicine.symptomcarotid endarterectomy (CEA)businessHumanLancet (London, England)
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The formation, properties and impact of secondary organic aerosol: Current and emerging issues

2009

Hallquist, M. Wenger, J. C. Baltensperger, U. Rudich, Y. Simpson, D. Claeys, M. Dommen, J. Donahue, N. M. George, C. Goldstein, A. H. Hamilton, J. F. Herrmann, H. Hoffmann, T. Iinuma, Y. Jang, M. Jenkin, M. E. Jimenez, J. L. Kiendler-Scharr, A. Maenhaut, W. McFiggans, G. Mentel, Th. F. Monod, A. Prevot, A. S. H. Seinfeld, J. H. Surratt, J. D. Szmigielski, R. Wildt, J.; Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and transformation of SOA is therefore required to evaluate its impact on atmospheric processes, climate and human health. The chemical and physical processes associated wit…

humic-like substancesAtmospheric Scienceenvironmental chamber data010504 meteorology & atmospheric sciences010501 environmental sciences01 natural sciencessupercritical-fluid extractionlcsh:Chemistrychemistry.chemical_compoundHuman healthddc:550catalyzed heterogeneous reactionsProcess engineeringairborne particulate matter0105 earth and related environmental sciencesTropospheric aerosolpolycyclic aromatic-hydrocarbonsinitiated atmospheric oxidationAtmospheric modelsbusiness.industryPharmacology. Therapy[CHIM.CATA] Chemical Sciences/Catalysis[CHIM.CATA]Chemical Sciences/Catalysischromatography-mass spectrometrylcsh:QC1-999JAerosolChemistrylcsh:QD1-999chemistry13. Climate actionEnvironmental chemistryEarth and Environmental Scienceslow-molecular-weightAerosol mass spectrometrytropospheric chemistry mechanismOrganic componentCurrent (fluid)/dk/atira/pure/subjectarea/asjc/1900/1902businesslcsh:PhysicsOrganosulfate
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