A5025047309- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Vehicle emissions and performance
- Retinal and Optic Conditions
- Retinal and Macular Surgery
- Air Quality Monitoring and Forecasting
- Intraocular Surgery and Lenses
- Glaucoma and retinal disorders
- Retinal Diseases and Treatments
- Ocular Diseases and Behçet’s Syndrome
- Facial Trauma and Fracture Management
- Calibration and Measurement Techniques
- Retinal Development and Disorders
- Impact of Light on Environment and Health
- Wind and Air Flow Studies
- Solar Radiation and Photovoltaics
- Vascular Malformations Diagnosis and Treatment
- Infection Control and Ventilation
- Ophthalmology and Visual Health Research
- Remote Sensing in Agriculture
- Corneal Surgery and Treatments
- Energy and Environment Impacts
Bristol Eye Hospital
2015-2024
University Hospitals Bristol NHS Foundation Trust
2020-2022
University Hospitals Bristol and Weston NHS Foundation Trust
2020-2022
Hospital Clínic de Barcelona
2011-2020
Paul Scherrer Institute
2003-2014
Universitat de Barcelona
2013-2014
Consorci Institut D'Investigacions Biomediques August Pi I Sunyer
2014
Abstract. Measurements of airborne particles with aerodynamic diameter 10 μm or less (PM10) and meteorological observations are available from 13 stations distributed throughout Switzerland representing different site types. The effect all variables on PM10 concentrations was estimated using Generalized Additive Models. Data each season were treated separately. most important affecting in winter, autumn spring wind gust, the precipitation rate previous day, current day boundary layer depth....
Abstract. The trends and variability of PM10, PM2.5 PMcoarse concentrations at seven urban rural background stations in five European countries for the period between 1998 2010 were investigated. Collocated or nearby PM measurements meteorological observations used order to construct Generalized Additive Models, which model effect each variable on concentrations. In agreement with previous findings, most important variables affecting wind speed, direction, boundary layer depth,...
Abstract. The results of a comparison exercise radiative transfer models (RTM) various international research groups for Multiple AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) viewing geometry are presented. Besides the assessment agreement between different models, second focus was systematic investigation sensitivity MAX-DOAS technique under geometries and aerosol conditions. In contrast to previous exercises, box-air-mass-factors (box-AMFs) atmospheric height layers were...
Abstract. Remote sensing of aerosol from space is a challenging and typically underdetermined retrieval task, requiring many assumptions to be made with respect the surface models. Therefore, quality priori information plays central role in any process (apart cloud screening procedure forward radiative transfer model, which most accurate should include treatment light polarization molecular-aerosol coupling). In this paper performance various algorithms spectral optical thickness...
To report the anatomical pattern and etiological spectrum of uveitis in an urban multi-ethnic population from Barcelona, Spain. General specific epidemiological data for most prevalent aetiologies are also calculated.A cross-sectional study consecutive cases was performed between 1 January 2009 31 December 2012. Exogenous endophthalmitis, surgery-related, post-traumatic toxic along with masquerade syndromes were excluded. Anatomical (Standard Uveitis Nomenclature criteria) aetiological...
Abstract. Biogenic volatile organic compounds (BVOC) emitted from vegetation are important for the formation of secondary pollutants such as ozone and aerosols (SOA) in atmosphere. Therefore, BVOC emission an input air quality models. To model these emissions with high spatial resolution, accuracy underlying inventory is crucial. We present a that accommodates different inventories uses satellite-based measurements greenness instead pre-defined periods. This approach to seasonality...
It is now generally accepted that SARS-CoV-2 can be spread by aerosols as well larger droplets from the upper respiratory tract, although relative importance of aerosol transmission remains incompletely answered.1Pöhlker ML Krüger OO Förster J-D et al.Respiratory and in infectious diseases.arXiv. 2021; (published online 1 March.)http://arxiv.org/abs/2103.01188Google Scholar Despite this, current UK infection control guidance for hospitals centred on premise are only generated specific...
To evaluate the safety and efficacy of Ozurdex (dexamethasone intravitreal implant) 0.7 mg in treatment uveitic macular edema vitrectomized eyes.Data from 13 patients (17 eyes) with persistent cystoid a history pars plana vitrectomy study eyes that were treated injection 0.7-mg dexamethasone implant reviewed retrospectively. Main outcome measures changes central retinal thickness measured by optical coherence tomography best-corrected visual acuity.The median age was 61 years (range, 19-81...
Objective Retrograde trans-synaptic degeneration of retinal ganglion cell layer (GCL) has been proposed as one the mechanisms contributing to permanent disability after visual pathway damage. We set out test this mechanism taking advantage new methods for imaging macula with high resolution by optical coherence tomography (OCT) in patients lesions posterior pathway. Additionally, we explored association between thinning GCL an marker impairment such field defects. Methods Retrospective case...
Abstract. This study evaluates NO2 vertical tropospheric column densities (VTCs) retrieved from measurements of the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) above Switzerland and Alpine region. The close correlation between pixel averaged NOx emission rates a spatially temporally highly resolved inventory VTCs under anticyclonic meteorological conditions demonstrates general ability SCIAMACHY to detect sources pollution in Switzerland. is further used...
Abstract. This paper describes aerosol modelling in Europe with a focus on Switzerland during summer and winter periods. We modelled PM2.5 (particles smaller than 2.5 μm aerodynamic diameter) for one two periods years 2006 2007 using the CAMx air quality model. The meteorological fields were obtained from MM5 simulations. wind speeds some low-wind periods, however, had to be calibrated measurements use realistic input detailed AMS (aerosol mass spectrometer) at specific locations used...
Abstract. The three-dimensional photochemical model UAM-V is used to investigate the effects of various meteorological conditions and coarseness emission inventories on ozone concentration ROG/NOx limitation production in Po Basin northern part Italy. As a base case, high episode with up 200ppb 13 May 1998 was modelled previously thoroughly evaluated measurements gained during large field experiment. Systematic variations meteorology are applied mixing height, air temperature, specific...
Bilateral vision threatening vitreoretinal disease requiring urgent surgery such as proliferative diabetic retinopathy, vitreous haemorrhage and retinal detachment are not uncommon presentations. Accepted practice has been to address each eye in separate, staged procedures. However, there specific circumstances which operating on both eyes the same anaesthetic sitting may be preferable. Immediate Sequential Vitreoretinal Surgery (ISBVS) rarely described literature. We present a series of...
To evaluate clinical and paraclinical parameters for the indirect diagnosis of tuberculosis-related uveitis (TRU).Prospective 2-year study in a tertiary referral centre. Patients with clinically suspected TRU were recruited. Demographical data recorded. QuantiFERON(®) -TB Gold (QFT), tuberculosis skin test (TST) pulmonary X-ray performed, other possible aetiologies ruled out. Further investigations also performed case by after consultation. After final assessment, standard antituberculosis...
To analyse the changes in reported frequency of retinal detachment admissions and vitreo-retinal surgery procedures performed between 2000 2018 England. obtain information useful to contribute towards planning service delivery.Analysis England's Hospital Episode Statistics from Health Social Care Information Centre population data United Kingdom's Office for National Statistics.Episodes 'retinal detachments with breaks' increased year on 3447 (7.0/100 M) 10,971 (19.7/100 (p < 0.001), whereas...
Abstract. We report a study of changes in air quality due to emission reductions using the chemical transport model CAMx. The domain includes all Europe with nested over Switzerland. simulations were performed emissions for 1990 (the reference year Gothenburg Protocol), 2005 revised 2006 (for validation) and 2020 target Protocol) three scenarios prepared by IIASA/GAINS. Changes ozone, particulate matter nitrogen deposition are central theme study. modelled relative annual average PM2.5...
To assess potential methods of reducing visible aerosol generation during clear corneal phacoemulsification surgery in the era Covid-19.Aerosol was assessed using a model comprising human cadaveric corneoscleral rim mounted on an artificial anterior chamber. Typical settings were used and production recorded high-speed 4K camera. Aerosolisation evaluated under various experimental settings: Two different tip sizes (2.2, 2.75 mm), varying levels moisture, use suction blowing air surgical...
The performance of an aerosol module the three‐dimensional Eulerian model CAMx (Comprehensive Air Quality Model with Extensions) was evaluated in a domain covering Po Basin northern Italy. Concentrations secondary species such as particulate NO 3 − , NH 4 + SO 2− and SOC (secondary organic carbon) were calculated for particle size below 2.5 μm compared data available from field experiment, which took place May–June 1998. results inorganic aerosols comparable to measurements at urban rural...