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Articles 2581 - 2610 of 24230

Full-Text Articles in Physical Sciences and Mathematics

Magnon Landau Levels And Spin Responses In Antiferromagnets, Bo Li, Alexey Kovalev Jan 2020

Magnon Landau Levels And Spin Responses In Antiferromagnets, Bo Li, Alexey Kovalev

Department of Physics and Astronomy: Faculty Publications

We study gauge fields produced by gradients of the Dzyaloshinskii-Moriya interaction and propose a model of an AFM topological insulator of magnons. In the long wavelength limit, the Landau levels induced by the inhomogeneous Dzyaloshinskii-Moriya interaction exhibit relativistic physics described by the Klein-Gordon equation. The spin Nernst response due to the formation of magnonic Landau levels is compared to similar topological responses in skyrmion and vortex-antivortex crystal phases of AFM insulators. Our studies show that AFM insulators exhibit rich physics associated with topological magnon excitations.

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Altitude Of The Potentiometric Surface In The Mississippi River Valley Alluvial Aquifer, Spring 2018, Virginia L. Mcguire, Ronald C. Seanor, William H. Asquith, Anna M. Nottmeier, David C. Smith, Roland W. Tollett, Wade H. Kress, Kellan R. Strauch Jan 2020

Altitude Of The Potentiometric Surface In The Mississippi River Valley Alluvial Aquifer, Spring 2018, Virginia L. Mcguire, Ronald C. Seanor, William H. Asquith, Anna M. Nottmeier, David C. Smith, Roland W. Tollett, Wade H. Kress, Kellan R. Strauch

United States Geological Survey: Publications

The Mississippi River Valley alluvial (MRVA) aquifer is an important surficial aquifer in the Mississippi Alluvial Plain (MAP) area. The aquifer is generally considered to be an unconfined aquifer (fig. 1; Clark and others, 2011), and withdrawals are primarily used for irrigation (Maupin and Barber, 2005). These groundwater withdrawals have resulted in substantial areas of water-level decline in parts of the aquifer. Concerns about water-level declines and the sustainability of the MRVA aquifer have prompted the U.S. Geological Survey (USGS), as part of the USGS Water Availability and Use Science Program and with assistance from other Federal, State, and local …

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Trends In Streamflow And Precipitation For Selected Sites In The Elkhorn River Basin And In Streamflow In The Salt Creek And Platte River Basins, Nebraska, 1961–2011, Benjamin J. Dietsch, Kellan R. Strauch Jan 2020

Trends In Streamflow And Precipitation For Selected Sites In The Elkhorn River Basin And In Streamflow In The Salt Creek And Platte River Basins, Nebraska, 1961–2011, Benjamin J. Dietsch, Kellan R. Strauch

United States Geological Survey: Publications

To better understand the streamflow trends at the streamgages in the Elkhorn River Basin in Nebraska, the U.S. Geological Survey (USGS) in cooperation with the Lower Elkhorn Natural Resources District further investigated streamflow trends at the eight streamgages on the Elkhorn River, Salt Creek, and the Lower Platte River that indicated a positive trend in streamflow characteristics and analyzed precipitation trends in the four basins upstream from the Elkhorn River Basin streamgages. An analysis of four streamgages in the Elkhorn River Basin, one streamgage in Salt Creek Basin, and three streamgages in the Lower Platte River Basin that had previously …

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Modeling Escherichia Coli In The Missouri River Near Omaha, Nebraska, 2012–16, Brenda K. Densmore, Brent M. Hall, Matthew T. Moser Jan 2020

Modeling Escherichia Coli In The Missouri River Near Omaha, Nebraska, 2012–16, Brenda K. Densmore, Brent M. Hall, Matthew T. Moser

United States Geological Survey: Publications

The city of Omaha, Nebraska, has a combined sewer system in some areas of the city. In Omaha, Nebr., a moderate amount of rainfall will lead to the combination of stormwater and untreated sewage or wastewater being discharged directly into the Missouri River and Papillion Creek and is called a combined sewer overflow (CSO) event. In 2009, the city of Omaha began the implementation of their Long Term Control Plan (LTCP) to mitigate the effects of CSOs on the Missouri River and Papillion Creek. As part of the LTCP, the city partnered with the U.S. Geological Survey (USGS) in 2012 …

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Annotated Bibliography Of Scientific Research On Greater Sage-Grouse Published From 2015 To 2019, Sarah K. Carter, Robert S. Arkle, Heidi L. Bencin, Benjamin R. Harms, Daniel J. Manier, Aaron N. Johnston, Susan L. Phillips, Steven E. Hanser, Zachary H. Bowen Jan 2020

Annotated Bibliography Of Scientific Research On Greater Sage-Grouse Published From 2015 To 2019, Sarah K. Carter, Robert S. Arkle, Heidi L. Bencin, Benjamin R. Harms, Daniel J. Manier, Aaron N. Johnston, Susan L. Phillips, Steven E. Hanser, Zachary H. Bowen

United States Geological Survey: Publications

The greater sage-grouse (Centrocercus urophasianus; hereafter GRSG) has been a focus of scientific investigation and management action for the past two decades. The 2015 U.S. Fish and Wildlife Service listing determination of “not warranted” was in part due to a large-scale collaborative effort to develop strategies to conserve GRSG populations and their habitat and to reduce threats to both. New scientific information augments existing knowledge and can help inform updates or modifications to existing plans for managing GRSG and sagebrush ecosystems. However, the sheer number of scientific publications can be a challenge for managers tasked with evaluating and …

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Groundwater Availability Of The Northern High Plains Aquifer In Colorado, Kansas, Nebraska, South Dakota, And Wyoming, Steven M. Peterson, Jonathan P. Traylor, Moussa Guira Jan 2020

Groundwater Availability Of The Northern High Plains Aquifer In Colorado, Kansas, Nebraska, South Dakota, And Wyoming, Steven M. Peterson, Jonathan P. Traylor, Moussa Guira

United States Geological Survey: Publications

The Northern High Plains aquifer underlies about 93,000 square miles of Colorado, Kansas, Nebraska, South Dakota, and Wyoming and is the largest subregion of the nationally important High Plains aquifer. Irrigation, primarily using groundwater, has supported agricultural production since before 1940, resulting in nearly $50 billion in sales in 2012. In 2010, the High Plains aquifer had the largest groundwater withdrawals of any major aquifer system in the United States.Nearly one-half of those withdrawals were from the Northern High Plains aquifer, which has little hydrologic interaction with parts of the aquifer farther south. Land-surface elevation ranges from more than 7,400 …

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Estimated Groundwater Withdrawals From Principal Aquifers In The United States, 2015, John K. Lovelace, Martha G. Nielsen, Amy L. Read, Chid J. Murphy, Molly A. Maupin Jan 2020

Estimated Groundwater Withdrawals From Principal Aquifers In The United States, 2015, John K. Lovelace, Martha G. Nielsen, Amy L. Read, Chid J. Murphy, Molly A. Maupin

United States Geological Survey: Publications

In 2015, about 84,600 million gallons per day (Mgal/d) of groundwater were withdrawn in the United States for various uses including public supply, self-supplied domestic, industrial, mining, thermoelectric power, aquaculture, livestock, and irrigation. Of this total, about 94 percent (79,200 Mgal/d) was withdrawn from principal aquifers, which are defined as regionally extensive aquifers or aquifer systems that have the potential to be used as sources of water of suitable quality and quantity to meet various needs. The remaining 6 percent (5,400 Mgal/d) was withdrawn from other, nonprincipal aquifers in the United States. Sixty-six principal aquifers belonging to 5 major lithologic …

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Water Quality Of Groundwater Used For Public Supply In Principal Aquifers Of The Western United States, Celia C. Rosencrans, Marylynn Musgrove Jan 2020

Water Quality Of Groundwater Used For Public Supply In Principal Aquifers Of The Western United States, Celia C. Rosencrans, Marylynn Musgrove

United States Geological Survey: Publications

Groundwater provides nearly half of the Nation’s drinking water. As the Nation’s population grows, the importance of (and need for) high-quality drinking-water supplies increases. As part of a national-scale effort to assess groundwater quality in principal aquifers (PAs) that supply most of the groundwater used for public supply, the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Project staff sampled six principal aquifers in the western United States between 2013 and 2017: (1) the Basin and Range carbonate-rock aquifers, (2) Basin and Range basin-fill aquifers, (3) Rio Grande aquifer system, (4) High Plains aquifer, (5) Colorado Plateaus aquifers, and (6) Columbia …

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The Role Of European Starlings (Sturnus Vulgaris) In The Dissemination Of Multidrug- Resistant Escherichia Coli Among Concentrated Animal Feeding Operations, Jeffrey C. Chandler, Jennifer E. Anders, Nicolas A. Blouin, James C. Carlson, Jeffrey T. Lejeune, Lawrence D. Goodridge, Baolin Wang, Leslie A. Day, Anna M. Mangan, Dustin A. Reid, Shannon M. Coleman, Matthew W. Hopken, Bledar Bisha Jan 2020

The Role Of European Starlings (Sturnus Vulgaris) In The Dissemination Of Multidrug- Resistant Escherichia Coli Among Concentrated Animal Feeding Operations, Jeffrey C. Chandler, Jennifer E. Anders, Nicolas A. Blouin, James C. Carlson, Jeffrey T. Lejeune, Lawrence D. Goodridge, Baolin Wang, Leslie A. Day, Anna M. Mangan, Dustin A. Reid, Shannon M. Coleman, Matthew W. Hopken, Bledar Bisha

United States Department of Agriculture Wildlife Services: Staff Publications

Antimicrobial use in livestock production is a driver for the development and proliferation of antimicrobial resistance (AMR). Wildlife interactions with livestock, acquiring associated AMR bacteria and genes, and wildlife’s subsequent dispersal across the landscape are hypothesized to play an important role in the ecology of AMR. Here, we examined priority AMR phenotypes and genotypes of Escherichia coli isolated from the gastrointestinal tracts of european starlings (Sturnus vulgaris) found on concentrated animal feeding operations (CAFOs). European starlings may be present in high numbers on cAfos (>100,000 birds), interact with urban environments, and can migrate distances exceeding 1,500 km in North …

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Technical Limitations Associated With Molecular Barcoding Of Arthropod Bloodmeals Taken From North American Deer Species, Erin M. Borland, Daniel A. Hartman, Matthew W. Hopken, Antoinette J. Piaggio, Rebekah C. Kading Jan 2020

Technical Limitations Associated With Molecular Barcoding Of Arthropod Bloodmeals Taken From North American Deer Species, Erin M. Borland, Daniel A. Hartman, Matthew W. Hopken, Antoinette J. Piaggio, Rebekah C. Kading

United States Department of Agriculture Wildlife Services: Staff Publications

Accurate species-level identification of the source of arthropod bloodmeals is important for deciphering blood feeding patterns of field-collected specimens. Cytochrome c oxidase I (COI) mitochondrial gene sequencing has been used for this purpose; however, species resolution can be difficult to obtain from certain vertebrate genera, including Odocoileus. Sanger sequencing of mitochondrial genes was employed to identify the bloodmeal source of wild-caught mosquitoes trapped in Greeley, Colorado. Initial sequencing of the COI gene of mitochondrial DNA in bloodmeals was inadequate for species-level resolution of bloodmeals from deer in the genus Odocoileus, with current databases returning low fidelity matches to …

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Repellent Surface Applications For Pest Birds, Shelagh T. Deliberto, James C. Carlson, Hailey E. Mclean, Caroline S. Olson, Scott J. Werner Jan 2020

Repellent Surface Applications For Pest Birds, Shelagh T. Deliberto, James C. Carlson, Hailey E. Mclean, Caroline S. Olson, Scott J. Werner

United States Department of Agriculture Wildlife Services: Staff Publications

Common pest birds in the United States include the non-native European starling (Sturnus vulgaris), house sparrow (Passer domesticus), and the pigeon (Columba livia domestica), as well as native birds including Canada geese (Branta canadensis) and gull species (Laridae). Large concentrations of pest birds can create human health hazards and monetary losses due to consumption of crops, depredation, and fecal contamination and accumulation. Fecal contamination hazards include the potential spread of zoonotic diseases including antimicrobial-resistant zoonoses and human injury due to the accumulation of fecal material on walking surfaces. Additionally, fecal accumulation causes …

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Review Of Ospreys: The Revival Of A Global Raptor, By Alan F. Poole. 2019., Lisa Fields, Brian E. Washburn Jan 2020

Review Of Ospreys: The Revival Of A Global Raptor, By Alan F. Poole. 2019., Lisa Fields, Brian E. Washburn

United States Department of Agriculture Wildlife Services: Staff Publications

For the past three decades, Alan Poole’s (1989) Ospreys: A Natural and Unnatural History has provided a solid foundation for those seeking a primer on the basic biology and ecology of Ospreys (Pandion haliaetus). Poole’s summary of knowledge about Ospreys was written at a time when these amazing birds were recovering from their DDTinduced population crash, but this important book has long been out of print. In the intervening decades, much has been learned regarding Ospreys. In his new book, Ospreys: The Revival of a Global Raptor, Poole guides the reader through a tour of Ospreys’ worldwide distribution and population …

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Development And Testing Of A Matrix For Mongoose Toxic Bait: Nontoxic Bait Acceptance Cage Trials, Shane Siers, Robert T. Sugihara, Israel Leinbach, Daniel Sedgwick, Chris N. Niebuhr, Emily W. Ruell Jan 2020

Development And Testing Of A Matrix For Mongoose Toxic Bait: Nontoxic Bait Acceptance Cage Trials, Shane Siers, Robert T. Sugihara, Israel Leinbach, Daniel Sedgwick, Chris N. Niebuhr, Emily W. Ruell

Vertebrate Pest Conference Proceedings: 29th (2020)

The only pesticide currently registered for mongoose control is a product developed for rats that consists of a hard-cereal bait block. Although the active ingredient (diphacinone) is known to be highly effective for mongoose, previous studies indicate that carnivorous and omnivorous mongooses do not readily consume the hard bait matrix designed for gnawing rodents. A palatable bait matrix with a consistency more appropriate to mongoose dentition and feeding behavior will be required to develop a more effective mongoose pesticide. We evaluated the acceptance and consumption of nontoxic versions of four candidate bait matrices: FOXECUTE® and FOXSHIELD® (Animal Control Technologies, Australia; …

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Laboratory Evaluation Of The Effectiveness Of The Fertility Control Bait Contrapest® On Wild-Captured Black Rats (Rattus Rattus), Shane Siers, Robert T. Sugihara, Israel Leinbach, Brandy R. Pyzyna, Gary Witmer Jan 2020

Laboratory Evaluation Of The Effectiveness Of The Fertility Control Bait Contrapest® On Wild-Captured Black Rats (Rattus Rattus), Shane Siers, Robert T. Sugihara, Israel Leinbach, Brandy R. Pyzyna, Gary Witmer

Vertebrate Pest Conference Proceedings: 29th (2020)

A non-toxic liquid fertility control bait for rats has recently become commercially available (ContraPest® from SenesTech, Inc.). This product contains two chemicals, both of which impair spermatogenesis in male and reduce ovulations in female rats. We tested the efficacy of this bait in wild-caught adult black rats from the island of Hawai’i in a short-term laboratory trial. A control group (n = 25) was offered placebo bait and the treatment group (n = 25) was offered fertility control bait, both ad libitum, during a 15-day introduction period and during the first of four breeding rounds, for a total of 58 …

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Understanding And Preventing Bird Damage On Dairies, Amber Adams-Progar, Karen Steensma, Stephanie A. Shwiff, Julie L. Elser, Susan Kerr, Tyler P. Caskin Jan 2020

Understanding And Preventing Bird Damage On Dairies, Amber Adams-Progar, Karen Steensma, Stephanie A. Shwiff, Julie L. Elser, Susan Kerr, Tyler P. Caskin

Vertebrate Pest Conference Proceedings: 29th (2020)

Wild birds cause significant damage to dairy farms through the consumption and spoilage of cattle feed. A survey of Washington State dairy farmers revealed approximately $14 million in bird damage losses for the Washington State dairy industry, annually. Furthermore, farms that reported the presence of more than 10,000 birds per day were more likely to report the presence of Salmonella spp. or Johne’s disease (caused by Mycobacterium avium subsp. paratuberculosis). Over the course of three years, we assessed the impact of bird populations on the presence of bacteria in bird feces and the nutritional composition of cattle feed. Five dairies …

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A Preliminary Field Evaluation Of Candidate Repellents To Reduce Black Bear Damage To Western Larch Trees, G. W. Witmer, Michael Pipas Jan 2020

A Preliminary Field Evaluation Of Candidate Repellents To Reduce Black Bear Damage To Western Larch Trees, G. W. Witmer, Michael Pipas

Vertebrate Pest Conference Proceedings: 29th (2020)

Bear damage to western larch trees on intensively managed public and private forest lands of the Intermountain West continues to be a problem for forest managers. Bark stripping and subsequent cambium feeding by bears commences upon den emergence in the spring, when foraging options are most restrictive. Various damage reduction methods are often controversial (snaring, hunting, supplemental feeding), or do not always adequately resolve the problem (silvicultural strategies); hence, a need exists for the development of alternative nonlethal techniques to reduce damage. We tested the efficacy of three candidate repellents (Hot Sauce®, Tree Guard™, and grizzly bear feces) to reduce …

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Automated Aerial Baiting For Invasive Brown Treesnake Control: System Overview And Program Status, Shane R. Siers, John D. Eisemann, William C. Pitt, Larry Clark, Scott M. Goetz, Robert J. Gosnell, Aaron F. Collins, Eric T. Hileman, Melia G. Nafus, Amy A. Yackel Adams, Michael C. Messaros, William G.N. Coon Jan 2020

Automated Aerial Baiting For Invasive Brown Treesnake Control: System Overview And Program Status, Shane R. Siers, John D. Eisemann, William C. Pitt, Larry Clark, Scott M. Goetz, Robert J. Gosnell, Aaron F. Collins, Eric T. Hileman, Melia G. Nafus, Amy A. Yackel Adams, Michael C. Messaros, William G.N. Coon

Vertebrate Pest Conference Proceedings: 29th (2020)

The economically and ecologically catastrophic introduction of invasive brown treesnakes to the Pacific Island of Guam has long served as a cautionary tale about the dangers of invasive species and the seeming impossibility of their management on a landscape scale. USDA Wildlife Services and federal and private partners have engineered a system for the automated manufacture and aerial delivery of toxic baits for landscape-scale suppression of brown treesnakes in large and remote forest plots. The helicopter-borne dispensing module can launch four bait cartridges per second, and a single payload of 3,600 cartridges can treat 30 ha of forest at 120 …

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If At First You Don’T Eradicate: Remediating Rat Eradication Failure On Wake Atoll, Peter J. Kappes, Shane R. Siers, Kristen Rex, Chad Hanson Jan 2020

If At First You Don’T Eradicate: Remediating Rat Eradication Failure On Wake Atoll, Peter J. Kappes, Shane R. Siers, Kristen Rex, Chad Hanson

Vertebrate Pest Conference Proceedings: 29th (2020)

Island rodent eradication operations have been remarkably successful at eliminating damages caused by these harmful vertebrate pests. As efforts increase in scale and complexity, so does risk of eradication failure. In this paper we present the example of a partially successful rodent eradication project to highlight how best practices and lessons learned are being integrated to reduce risk of failure during a second attempt. In 2012 the U.S. Air Force (USAF) commissioned an attempted eradication of two rat species from Wake Atoll in the Western Pacific. Asian house rats were successfully eradicated, but it was soon confirmed that some Polynesian …

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Feasibility Of A Successful Rat Eradication On Wake Atoll Following Initial Partial Failure: Potential Causes, Remedial Actions, And Remaining Knowledge Gaps, Chad Hanson, Kristen Rex, Peter J. Kappes, Shane R. Siers Jan 2020

Feasibility Of A Successful Rat Eradication On Wake Atoll Following Initial Partial Failure: Potential Causes, Remedial Actions, And Remaining Knowledge Gaps, Chad Hanson, Kristen Rex, Peter J. Kappes, Shane R. Siers

Vertebrate Pest Conference Proceedings: 29th (2020)

A 2012 attempt to remove two rat species (Rattus tanezumi and R. exulans) from Wake Atoll was partially successful. R. tanezumi was eradicated from all three islands (Wake, Wilkes, and Peale), and R. exulans was eradicated from Peale. However, R. exulans remained on Wake and Wilkes and have since recovered to very high densities. In 2013, a panel of experts reviewed the eradication operation and offered a list of possible causes of the partial failure. Since that time, further research has been conducted to address several of the issues identified in the review. In this paper, we conduct a current …

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The Pocatello Supply Depot: A History And Update, Patrick A. Darrow Jan 2020

The Pocatello Supply Depot: A History And Update, Patrick A. Darrow

Vertebrate Pest Conference Proceedings: 29th (2020)

Since the Pocatello Supply Depot (PSD) was created in 1936, the PSD has gone through many transformation and organizational changes. The most recent of these changes occurred in 2014, when the PSD transitioned from a cooperative service agreement between the U.S. Department of Agriculture (USDA) and the Greater Pocatello Chamber of Commerce, to a fully federal facility within USDA. Despite the many organizational changes, the purpose of the PSD has remained the same. The PSD manufactures and provides specialized wildlife damage management materials and services that are not readily available from commercial sources, for use by USDA Wildlife Services (WS), …

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Island Rodent Eradications: Little Things Make Big Things Happen, Araceli Samaniego-Herrera, Peter J. Kappes, Shane R. Siers Jan 2020

Island Rodent Eradications: Little Things Make Big Things Happen, Araceli Samaniego-Herrera, Peter J. Kappes, Shane R. Siers

Vertebrate Pest Conference Proceedings: 29th (2020)

Island rodent eradication is often a prerequisite for ecological restoration. These operations have been scaling up in size and complexity, and typically revolve around the thorough distribution of rodenticides in bait stations, by hand broadcast, by helicopter-borne spreading buckets, or by combinations of these methods. Many of the requirements of an eradication can be met by simply purchasing the right materials and following published best practices. However, intangible factors such as training and mindset of personnel are equally critical, and less commonly understood. We briefly review these factors and highlight issues such as the limited pool of experienced eradication practitioners, …

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Assessing Beaver Occupancy And Dam Building Potential: A Case Study In The Umpqua Watershed Of Southwestern Oregon, Vanessa M. Petro, John Stevenson, Jimmy Taylor Jan 2020

Assessing Beaver Occupancy And Dam Building Potential: A Case Study In The Umpqua Watershed Of Southwestern Oregon, Vanessa M. Petro, John Stevenson, Jimmy Taylor

Vertebrate Pest Conference Proceedings: 29th (2020)

Interest in beaver-related restoration is growing in the western U.S. but understanding the basic ecology of American beaver and their population dynamics is often overlooked when integrating beaver into stream restoration goals. Our study investigated the spatial-temporal distribution of beaver colonies and their damming activities to better inform stream restoration projects in the West Fork Cow Creek Basin of the Umpqua Watershed in southwestern Oregon. During fall 2017, we conducted beaver activity surveys at 144 randomly selected reaches predicted to be either suitable or unsuitable for damming, but suitable for beaver occupation. We categorized beaver use at each reach using …

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Placebo Bait Uptake Trial To Test Feasibility Of Polynesian Rat (Rattus Exulans) Eradication On Wake Atoll, Chris N. Niebuhr, Israel Leinbach, Thomas W. Mcauliffe, Dean K. Foster, Shane R. Siers Jan 2020

Placebo Bait Uptake Trial To Test Feasibility Of Polynesian Rat (Rattus Exulans) Eradication On Wake Atoll, Chris N. Niebuhr, Israel Leinbach, Thomas W. Mcauliffe, Dean K. Foster, Shane R. Siers

Vertebrate Pest Conference Proceedings: 29th (2020)

Rodent eradications have contributed to the recovery of many threatened species, but challenges often exist for campaigns that occur on tropical islands when compared to more temperate regions. A post-operational review of a rat eradication operation on Wake Atoll indicated that certain areas, such as those with high alternative food abundance, may have contributed to the failure to remove all Polynesian rats. We conducted a nontoxic bait uptake trial to evaluate whether the maximum prescribed bait application rate for Brodifacoum-25W rodenticide pellets was sufficient to expose all rats to a lethal dose at three sites on Wake Atoll, including around …

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Carbon Oxidation State In Microbial Polar Lipids Suggests Adaptation To Hot Spring Temperature And Redox Gradients, Grayson M. Boyer, Florence Schubotz, Roger E. Summons, Jade Woods, Everett L. Shock Jan 2020

Carbon Oxidation State In Microbial Polar Lipids Suggests Adaptation To Hot Spring Temperature And Redox Gradients, Grayson M. Boyer, Florence Schubotz, Roger E. Summons, Jade Woods, Everett L. Shock

Chemistry Department: Faculty Publications

The influence of oxidation-reduction (redox) potential on the expression of biomolecules is a topic of ongoing exploration in geobiology. In this study, we investigate the novel possibility that structures and compositions of lipids produced by microbial communities are sensitive to environmental redox conditions. We extracted lipids from microbial biomass collected along the thermal and redox gradients of four alkaline hot springs in Yellowstone National Park (YNP) and investigated patterns in the average oxidation state of carbon (ZC), a metric calculated from the chemical formulae of lipid structures. Carbon in intact polar lipids (IPLs) and their alkyl chains becomes …

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Measuring The Occurrence Of Antibiotics In Surface Water Adjacent To Cattle Grazing Areas Using Passive Samplers, Nasrin Naderi Beni, Daniel D. Snow, Elaine D. Berry, Aaron R. Mittelstet, Tiffany Messer, Shannon L. Bartelt-Hunt Jan 2020

Measuring The Occurrence Of Antibiotics In Surface Water Adjacent To Cattle Grazing Areas Using Passive Samplers, Nasrin Naderi Beni, Daniel D. Snow, Elaine D. Berry, Aaron R. Mittelstet, Tiffany Messer, Shannon L. Bartelt-Hunt

Nebraska Water Center: Faculty Publications

A wide variety of antibiotics and other pharmaceuticals are used in livestock production systems and residues passed to the environment, often unmetabolized, after use and excretion. Antibiotic residuesmay be transported frommanure-treated soils via runoff and are also capable of reaching surface and groundwater systems through a variety of pathways. The occurrence and persistence of antibiotics in the environment is a concern due to the potential for ecological effects and proliferation of environmental antibiotic resistance in pathogenic organisms. In the present study, the occurrence and seasonal variation of 24 commonly-used veterinary antibiotics was evaluated in surface water adjacent to several livestock …

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Detection Of Decoupled Surface And Bulk States In Epitaxial Orthorhombic Sriro3 Thin Films, P. E. Evans, T. Komesu, L. Zhang, D.-F. Shao, A. J. Yost, S. Kumar, E. F. Schwier, K. Shimada, E. Y. Tsymbal, X. Hong, And P. A. Dowben Jan 2020

Detection Of Decoupled Surface And Bulk States In Epitaxial Orthorhombic Sriro3 Thin Films, P. E. Evans, T. Komesu, L. Zhang, D.-F. Shao, A. J. Yost, S. Kumar, E. F. Schwier, K. Shimada, E. Y. Tsymbal, X. Hong, And P. A. Dowben

Evgeny Tsymbal Publications

No abstract provided.

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Spin-Torque Switching Of Non-Collinear Antiferromagnetic Antiperovskites, G. Gurung, D.-F. Shao, And E. Y. Tsymbal Jan 2020

Spin-Torque Switching Of Non-Collinear Antiferromagnetic Antiperovskites, G. Gurung, D.-F. Shao, And E. Y. Tsymbal

Evgeny Tsymbal Publications

No abstract provided.

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Epitaxial Antiperovskite/Perovskite Heterostructures For Materials Design, C. X. Quintela, K. Song, D. F. Shao, L. Xie, T. Nan, T. R. Paudel, N. Campbell, X. Pan, T. Tybell, M. S. Rzchowski, E. Y. Tsymbal, S.-Y. Choi, And C.-B. Eom Jan 2020

Epitaxial Antiperovskite/Perovskite Heterostructures For Materials Design, C. X. Quintela, K. Song, D. F. Shao, L. Xie, T. Nan, T. R. Paudel, N. Campbell, X. Pan, T. Tybell, M. S. Rzchowski, E. Y. Tsymbal, S.-Y. Choi, And C.-B. Eom

Evgeny Tsymbal Publications

No abstract provided.

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Controlling Spin Current Polarization Through Non-Collinear Antiferromagnetism, T. Nan, C. X. Quintela, J. Irwin, G. Gurung, D. F. Shao, J. Gibbons, N. Campbell, K. Song, S. Y. Choi, L. Guo, R. D. Johnson, P. Manuel, R. V. Chopdekar, I. Hallsteinsen, T. Tybell, P. J. Ryan, J. W. Kim, Y. S. Choi, P. Radaelli, D. Ralph, E. Y. Tsymbal, M. S. Rzchowski, And C. B. Eom Jan 2020

Controlling Spin Current Polarization Through Non-Collinear Antiferromagnetism, T. Nan, C. X. Quintela, J. Irwin, G. Gurung, D. F. Shao, J. Gibbons, N. Campbell, K. Song, S. Y. Choi, L. Guo, R. D. Johnson, P. Manuel, R. V. Chopdekar, I. Hallsteinsen, T. Tybell, P. J. Ryan, J. W. Kim, Y. S. Choi, P. Radaelli, D. Ralph, E. Y. Tsymbal, M. S. Rzchowski, And C. B. Eom

Evgeny Tsymbal Publications

No abstract provided.

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Insulator-To-Conductor Transition Controlled By The Rashba-Zeeman Effect, L. L. Tao And E. Y. Tsymbal Jan 2020

Insulator-To-Conductor Transition Controlled By The Rashba-Zeeman Effect, L. L. Tao And E. Y. Tsymbal

Evgeny Tsymbal Publications

No abstract provided.

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