We show that the Landsat and Sentinel-2 satellites can detect NO plumes from large point sources at 10 to 60 m pixel resolution in their blue and ultrablue bands. We use the resulting NO plume imagery to quantify nitrogen oxides (NO) emission rates for several power plants in Saudi Arabia and the United States, including a 13-y analysis of 132 Landsat plumes from Riyadh power plant 9 from 2009 through 2021. NO in the plumes initially increases with distance from the source, likely reflecting recovery from ozone titration.
View Article and Find Full Text PDFPurpose: The Monte Carlo method is an effective tool to simulate and verify PET systems. Furthermore, it can help in the design and optimization of new medical imaging devices and algorithms. In this framework, the goal of this work is to verify the GATE toolkit performance when applied to simulate two Siemens Healthineers PET scanners: a standard axial field-of-view Biograph Vision scanner and the new long axial field-of-view Biograph Vision Quadra scanner.
View Article and Find Full Text PDFIntroduction And Objectives: South America is one of the regions with the highest rates of non-alcoholic fatty liver disease (NAFLD). This study aimed to assess the prevalence and severity of NAFLD in suburban Argentina.
Patients And Methods: The study involved a general community cohort of 993 subjects evaluated sequentially with a comprehensive lifestyle questionnaire, laboratory testing, abdominal ultrasound (US) and transient elastography with XL probe.
Objective: We assessed the impact of the implementation of a simple multifaceted intervention aimed at improving management of cystitis in primary care.
Design: Quality control before and after study. SITE: Primary care centres in Barcelona city provided by the Catalonian Institute of Health.