Results 61 to 70 of about 754 (163)

When Do Riverine Systems “Feel the Burn”? Simulating How Burn Extent and Severity Modulate Hydrologic Controls on Biogeochemical Export

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Wildfires impact terrestrial landscapes and downstream river corridors through shifts in vegetation and soil properties leading to downstream hydrologic and water quality impacts. The magnitude of these impacts depend on a complex and interconnected set of wildfire, landscape, and aquatic processes.
K. A. Wampler, A. N. Myers‐Pigg, H. Kang, P. Regier, T. D. Scheibe, K. D. Bladon   +5 more
wiley   +1 more source

Characterization of a thermal decomposition chemical ionization mass spectrometer for the measurement of peroxy acyl nitrates (PANs) in the atmosphere [PDF]

Atmospheric Chemistry and Physics, 2011
This paper presents a detailed laboratory characterization of a thermal dissociation chemical ionization mass spectrometer (TD-CIMS) for the atmospheric measurement of Peroxyacetyl nitrate (PAN) and its homologues (PANs). PANs are efficiently dissociated
W. Zheng, F. M. Flocke, G. S. Tyndall, A. Swanson, J. J. Orlando, J. M. Roberts, L. G. Huey, D. J. Tanner   +7 more
doaj   +1 more source

A diagnostic approach for neurodegeneration with brain iron accumulation: clinical features, genetics and brain imaging

Arquivos de Neuro-Psiquiatria, 2016
Neurodegeneration with brain iron accumulation (NBIA) represents a heterogeneous and complex group of inherited neurodegenerative diseases, characterized by excessive iron accumulation, particularly in the basal ganglia.
Rubens Paulo Araújo Salomão, José Luiz Pedroso, Maria Thereza Drumond Gama, Lívia Almeida Dutra, Ricardo Horta Maciel, Clécio Godeiro-Junior, Hsin Fen Chien, Hélio A. G. Teive, Francisco Cardoso, Orlando G. P. Barsottini   +9 more
doaj   +1 more source

Role of aldehyde chemistry and NO_x concentrations in secondary organic aerosol formation [PDF]

Atmospheric Chemistry and Physics, 2010
Aldehydes are an important class of products from atmospheric oxidation of hydrocarbons. Isoprene (2-methyl-1,3-butadiene), the most abundantly emitted atmospheric non-methane hydrocarbon, produces a significant amount of secondary organic aerosol (SOA ...
P. O. Wennberg, R. C. Flagan, L. D. Yee, J. D. Crounse, C. L. Loza, P. S. Chhabra, J. D. Surratt, A. W. H. Chan, M. N. Chan, J. H. Seinfeld   +9 more
doaj   +1 more source

A Synoptic System for Capturing Ecosystem Control Points Across Terrestrial‐Aquatic Interfaces

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 10, October 2025.
Abstract Interconnected landscape features such as terrestrial‐aquatic interfaces play an outsized role in biogeochemical cycles as ecosystem control points, but it is notoriously challenging to characterize these. Here, we document a synoptic sensor network design that is (a) flexible to accommodate diverse ecosystem interfaces and gradients, (b ...
Nicholas D. Ward, J. Patrick Megonigal, Michael N. Weintraub, Peter Regier, Stephanie C. Pennington, Roberta Bittencourt Peixoto, Ben Bond‐Lamberty, Xingyuan Chen, Kennedy O. Doro, Kenneth M. Kemner, Fausto Machado‐Silva, Nate G. McDowell, Allison N. Myers‐Pigg, Leticia Sandoval, Kaizad F. Patel, Peter E. Thornton, Stephanie J. Wilson, Vanessa L. Bailey, Roy L. Rich   +18 more
wiley   +1 more source

Spatial and Temporal Shifts in Dissolved Organic Matter Character Across a Burned Stream Network

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 7, July 2025.
Abstract Increasing wildfire activity can impact the global carbon cycle, aquatic ecosystem health, and drinking water treatment through alterations in aquatic dissolved organic matter (DOM) composition. However, uncertainty remains about the spatial and temporal variability in wildfire effects on DOM composition.
K. A. Wampler, K. D. Bladon, A. N. Myers‐Pigg, J. A. Roebuck Jr.   +3 more
wiley   +1 more source

Over, Under, and Through: Hydrologic Connectivity and the Future of Coastal Landscape Salinization

Water Resources Research, Volume 61, Issue 7, July 2025.
Abstract Seawater intrusion (SWI) affects coastal landscapes worldwide. Here we describe the hydrologic pathways through which SWI occurs ‐ over land via storm surge or tidal flooding, under land via groundwater transport, and through watersheds via natural and artificial surface water channels—and how human modifications to those pathways alter ...
Ashley M. Helton, P. James Dennedy‐Frank, Ryan E. Emanuel, Scott C. Neubauer, Kyra H. Adams, Marcelo Ardon, Lawrence Band, Kevin M. Befus, Hanne Borstlap, Jamie A. Duberstein, Adam C. Gold, John S. Kominoski, Alex K. Manda, Holly A. Michael, Stephen M. J. Moysey, Allison N. Myers‐Pigg, Justine A. Neville, Greg Noe, Jeeban Panthi, Elnaz Pezeshki, Matthew J. Sirianni, Nicholas D. Ward   +21 more
wiley   +1 more source

Nighttime observation and chemistry of HO_x in the Pearl River Delta and Beijing in summer 2006 [PDF]

Atmospheric Chemistry and Physics, 2014
Nighttime HOx chemistry was investigated in two ground-based field campaigns (PRIDE-PRD2006 and CAREBEIJING2006) in summer 2006 in China by comparison of measured and modeled concentration data of OH and HO2. The measurement sites were located in a rural
K. D. Lu, F. Rohrer, F. Holland, H. Fuchs, T. Brauers, A. Oebel, R. Dlugi, M. Hu, X. Li, S. R. Lou, M. Shao, T. Zhu, A. Wahner, Y. H. Zhang, A. Hofzumahaus   +14 more
doaj   +1 more source

Very Late‐Onset Neurodegeneration with Brain Iron Accumulation Associated with Mild Chorea: A Clinicopathological Case

Movement Disorders Clinical Practice, Volume 12, Issue 6, Page 835-841, June 2025.
Abstract Background Neurodegeneration with Brain Iron Accumulation (NBIA) rarely manifests after the age of 50 years. The phenotype in these cases is most often parkinsonism. Objectives To present the case with the oldest age of NBIA onset reported so far. Methods Clinico‐pathological case.
Jussi O.T. Sipilä, Aki Hietaharju, Anna Maija Saukkonen, Laura Kytövuori, Liisu Balk, Valtteri Kaasinen, Tuomas Rauramaa   +6 more
wiley   +1 more source

Advancing the understanding of coastal disturbances with a network‐of‐networks approach

Ecosphere, Volume 16, Issue 1, January 2025.
Abstract Coastal ecosystems are at the nexus of many high priority challenges in environmental sciences, including predicting the influences of compounding disturbances exacerbated by climate change on biogeochemical cycling. While research in coastal science is fundamentally transdisciplinary—as drivers of biogeochemical and ecological processes often
Allison N. Myers‐Pigg, Diana Moanga, Ben Bond‐Lamberty, Nicholas D. Ward, J. Patrick Megonigal, Elliott White Jr, Vanessa L. Bailey, Matthew L. Kirwan   +7 more
wiley   +1 more source