Publications by authors named "E H Halpern"
Article Synopsis
- Biomass burning organic aerosol (BBOA) is crucial for understanding atmospheric chemistry and climate change, but its behavior under evaporation conditions is not well studied.
- This research examined the evaporation effects on BBOA proxies created from wood pyrolysis emissions, analyzing changes in volatility and viscosity.
- Results indicated that evaporation increases particle viscosity, which slows down diffusion and alters particle formation, emphasizing the need for these factors in atmospheric models to predict BBOA's environmental effects.
Quantitative assessment of gas-particle partitioning of individual components within complex atmospheric organic aerosol (OA) mixtures is critical for predicting and comprehending the formation and evolution of OA particles in the atmosphere. This investigation leverages previously documented data obtained through a temperature-programmed desorption-direct analysis in real-time, high-resolution mass spectrometry (TPD-DART-HRMS) platform. This methodology facilitates the bottom-up construction of volatility basis set (VBS) distributions for constituents found in three biogenic secondary organic aerosol (SOA) mixtures produced through the ozonolysis of α-pinene, limonene, and ocimene.
View Article and Find Full Text PDFAn anomalous origin of the right coronary artery from the opposite sinus of Valsalva with an intramural course (R-ACAOS-IM) may cause sudden cardiac death in children and adolescents. However, the natural history and management of patients in whom this anomaly is detected later during adulthood remains uncertain. The goals of this study were to assess the impact of an R-ACAOS-IM on the clinical outcomes in an adult population and to determine if adult patients with this anomaly who do not have significant coronary artery disease (CAD) can be managed safely without surgical intervention.
View Article and Find Full Text PDFObjective: To evaluate two different dual-energy computed tomography (DECT) post-processing protocols for the detection of MSU deposits in foot tendons of cadavers with verification by polarizing light microscopy as the gold standard.
Material And Methods: A total of 40 embalmed cadavers (15 male; 25 female; median age, 82 years; mean, 80 years; range, 52-99; SD ± 10.9) underwent DECT to assess MSU deposits in foot tendons.