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Environment

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Displaying 176 - 200 of 537

Crystallography of Functional Materials (Editorial Comments)

November 15, 2017
Author(s)
Winnie K. Wong-Ng, Claudia J. Rawn
The goal of this special issue is to obtain new insights into the roles of crystallography in functional materials. This special issue consists of eight chapters illustrating the structure and property relationships, as well as applications of selected

Deriving global OH abundance and atmospheric lifetimes for long-lived gases: A search for the alternative reference gas for CH3CCl3.

November 3, 2017
Author(s)
Qing Liang, Martyn P. Chipperfield, Eric L. Fleming, Luke Abraham, Peter Braesicke, James B. Burkholder, John S. Daniels, Sandip Dhomse, Steven C. Hardiman, Charles H. Jackman, Douglas E. Kinnison, Stephen A. Montzka, Olaf Morgenstern, Archie McCulloch, Paul A. Newman, Vladimir L. Orkin, Giovanni Pitari, Matthew Rigby, Eugene Rozanov, Fiona Tummon, Guus J. Velders, Daniele Visioni
An accurate estimate of global hydroxyl radical (OH) abundance is important for projections of air quality, climate, and stratospheric ozone layer recovery. As atmospheric concentration of methyl chloroform (MCF), the commonly used reference gas for OH

Performance and Environmental Correction of a Low-Cost NDIR CO2 Sensor

July 3, 2017
Author(s)
Cory Martin, Ning Zeng, Anna Karion, Russell R. Dickerson, Xinrong Ren, Bari Turpie, Kristy Weber
Abstract. Non-dispersive infrared (NDIR) sensors are a low-cost way to observe carbon dioxide concentrations in ambient air, but their specified accuracy and precision are not sufficient for some scientific applications. An initial evaluation of six

Rapid and reliable steroid hormone profiling in Tursiops truncatus blubber using liquid chromatography tandem mass spectrometry (LC-MS/MS)

June 1, 2017
Author(s)
Ashley S. Boggs-Russell, Tracey B. Schock, Thomas M. Galligan, Wayne E. McFee, Jeanine S. Morey, Lori Schwacke, John R. Kucklick
Monitoring of marine mammal steroid hormone status using matrices alternative to blood is desirable due to the ability to remotely collect samples which minimizes stress. However, measurement techniques in alternative matrices such as blubber described to

The Indianapolis Flux Experiment (INFLUX): A test-bed for developing anthropogenic greenhouse gas emission measurements.

May 23, 2017
Author(s)
Ken Davis, Kevin Gurney, R. M. Hardesty, Shepson Paul, Colm Sweeney, Jocelyn Turnbull, James Whetstone, Anna Karion
The objective of the Indianapolis Flux Experiment (INFLUX) is to develop, evaluate and improve methods for measuring greenhouse gas (GHG) emissions from cities. INFLUX's scientific objectives are to quantify CO2 and CH4 emission rates at 1 km2 resolution

Correlations for the Viscosity and Thermal Conductivity of Ethyl Fluoride (R161)

May 17, 2017
Author(s)
Ch. M. Tsolakidou, Marc J. Assael, Marcia L. Huber, Richard A. Perkins
This paper presents new wide-ranging correlations for the viscosity and thermal conductivity of ethyl fluoride (R161) based on critically evaluated experimental data. The correlations are designed to be used with a recently published equation of state that

Perfluorinated Alkyl Acids in the Plasma of American Alligators (Alligator mississippiensis) from Florida and South Carolina

April 4, 2017
Author(s)
Jessica L. Reiner, John Bowden, Ian Christie, Matthew P. Guillette, Russell H. Lowers, Arnold Brunell, Phillip M. Wilkinson, Jacqueline T. Bangma, Thomas R. Rainwater, Louis J. Guillette Jr., Martin Jones
This study was the first to quantitate fourteen perfluoroalkyl acids (PFAAs) in 125 adult American alligators at twelve sites across the southeastern US. Of those fourteen PFAAs, nine were commonly detected. Males as a group (across all sites) showed a

Spatial variation in perfluoroalkyl acids in a population of wild American alligators (Alligator mississippiensis) at Merritt Island National Wildlife Refuge (MINWR) surrounding the Kennedy Space Center (KSC)

January 26, 2017
Author(s)
John Bowden, Jacqueline T. Bangma, Martin Jones, Russell H. Lowers, Frances Nilsen, Jessica L. Reiner, Thomas R. Rainwater, Stephen E. Somerville, Louis J. Guillette Jr.
This study aimed to quantify fourteen perfluoroalkyl acids (PFAAs) in the plasma of a population of alligators located at Merritt Island national Wildlife Refuge (MINWR). Male (n = 117) and female (n = 112) alligators were sampled in every month during

Alterations in eicosanoid composition during embryonic development in the chorioallantoic membrane of the American alligator (Alligator mississippiensis) and domestic chicken (Gallus gallus)

November 1, 2016
Author(s)
John Bowden, Theresa M. Cantu, Jacob Scott, Jimena B. Perez-Viscasillas, Kevin M. Huncik, Matthew P. Guillette, Louis J. Guillette Jr.
Eicosanoids are signaling lipids that regulate several physiological processes in the mammalian placenta, including the initiation of parturition. Though all amniotes construct similar extraembryonic membranes during development, the composition and

Integrative and comparative reproductive biology: From alligators to xenobiotics

November 1, 2016
Author(s)
Ashley S. Boggs-Russell, John Bowden, Abby G. Wenzel, Satomi Kohno, Heather J. Hamlin, Lori Cruze, Krista A. McCoy, Alison M. Roark, Thea M. Edwards, Theresa M. Cantu, Jessica A. Cloy-McCoy, Nicole A. McNabb, Cameron E. Williams
Dr. Louis J. Guillette Jr. thought of himself as a reproductive biologist. However, his interest in reproductive biology transcended organ systems, life history stages, species, and environmental contexts. His integrative and collaborative nature led to

Avian mercury exposure and toxicological risk across western North America: a synthesis

October 15, 2016
Author(s)
Joshua T. Ackerman, Collin A. Eagles-Smith, Mark P. Herzog, Alex Hartman, Sarah Peterson, David C. Evers, Allyson Jackson, John E. Elliott, Stacy Schuur, Colleen E. Bryan Sallee
Methylmercury contamination of the environment is an important issue globally and birds are useful bioindicators for mercury monitoring programs. We synthesized all of the available data on mercury contamination of birds in western North America. We

Mercury Risk to Avian Piscivores across the Western United States and Canada

October 15, 2016
Author(s)
Allyson Jackson, David C. Evers, Collin A. Eagles-Smith, Joshua T. Ackerman, James J. Willacker, John E. Elliott, Stacy Schuur, Colleen E. Bryan Sallee
As part of the Western North America Mercury Synthesis, we evaluated risk to avian piscivores across all or parts of their breeding range through the compilation of fish and bird tissue mercury (Hg) concentrations for western United States and Canada. We

A multi-year estimate of methane fluxes in Alaska from CARVE atmospheric observations

October 9, 2016
Author(s)
Anna Karion, Scot Miller, Anna Michalak, Rachel Chang, Steven Dinardo, Jakob Lindaas, Colm Sweeney, Roisin Commane
Methane (CH4) fluxes from Alaska and other arctic regions may be sensitive to thawing permafrost and future climate change, but estimates of both current and future fluxes from the region are uncertain. This study estimates CH4 fluxes across Alaska over a
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