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Semiautomated Identification and Characterization of Dunes at Hargraves Crater, Mars 

Emran, A; Marzen, L; King, D; 0000-0002-4420-0595 (2022-09-29)
The Mars Global Digital Dune Database (MGD(3)) contains information on Martian dune fields and prepared manually from the Thermal Emission Imaging System (THEMIS; 100 m/pixel) images. Although the MGD(3)outlines dune fields, ...

Sequential addition of H2O, CH3OH, and NH3 to Al3O3-: A theoretical study 

Guevara-Garcia, Alfredo; Martinez, Ana; Ortiz, J.V. (2021-01-26)
Photoelectron spectra of two species, Al3O3(H2O)(2)(-) and Al3O3(CH3OH)(2)(-), that are produced by the addition of two water or methanol molecules to Al3O3- are interpreted with density-functional geometry optimizations ...

Severe mammal declines coincide with proliferation of invasive Burmese pythons in Everglades National Park 

Dorcas, Michael E.; Wilson, John D; Reed, Robert N.; Snow, Ray W.; Rochford, Michael R.; Miller, Melissa A.; Meshaka, Walter E. Jr; Andreadis, Paul T.; Mazzotti, Frank J. (2022-09-15)
Invasive species represent a significant threat to global biodiversity and a substantial economic burden. Burmese pythons, giant constricting snakes native to Asia, now are found throughout much of southern Florida, including ...

Severe mammal declines coincide with proliferation of invasive Burmese pythons in Everglades National Park 

Dorcas, Michael E.; Willson, John D.; Reed, Robert N.; Snowd, Ray W.; Rochforde, Michael R.; Miller, Melissa A.; Meshaka Jr., Walter E.; Andreadish, Paul T.; Mazzottie, Frank J.; Romagosa, Christina M.; Hart, Kristen M. (2020-04-01)
Invasive species represent a significant threat to global biodiversity and a substantial economic burden. Burmese pythons, giant constricting snakes native to Asia, now are found throughout much of southern Florida, ...

Sex-Specific Effects of Incubation Temperature on Embryonic Development of Zebra Finch (Taeniopygia guttata) Embryos 

Gurley, Bain; Finger, John W.; Wada, Haruka; 0000-0001-7436-8367 (2022-03-04)
In oviparous species, the embryonic environmentparticularly temperaturecan alter phenotype and survival of an individual by affecting its size as well as its metabolic rate. Previous studies have shown that incubation ...

Show Me a Function: More Than Meets the Eye 

Eleh, Chinedu; 0000-0002-4531-5263 (2024-04-04)
Mathematics is a fascinating subject used to understand functions' properties and behavior. From simple precalculus to challenging graduate-level courses, there is an intricate web of functions to explore. Unfortunately, ...

Siboglinid-bacteria endosymbiosis: A model system for studying symbiotic mechanisms 

Thornhill, Daniel J; Fielman, Kevin T; Santos, Scott R; Halanych, Kenneth M (2019-04-29)
Siboglinid worms are a group of gutless marine annelids which are nutritionally dependent upon endosymbiotic bacteria.1,2 Four major groups of siboglinids are known including vestimentiferans, Osedax spp., frenulates and ...

Signatures of electron Landau resonant interactions with chorus waves from THEMIS observations 

Min, Kyungguk; Kaijun, Liu; Li, Wen; 0000-0001-5882-1328 (2022-10-04)
Simultaneous observations of electron phase space density (PSD) and chorus waves for more than 4 years by the Time History of Events and Macroscale Interactions during Substorms (THEMIS) are analyzed to identify signatures ...

Signatures of electron Landau resonant interactions with chorus waves from THEMIS observations 

Min, Kyungguk; Liu, Kaijun; Li, Wen; 0000-0002-2095-8529; 0000-0001-5882-1328 (2020-06-05)
Simultaneous observations of electron phase space density (PSD) and chorus waves for more than 4 years by the Time History of Events and Macroscale Interactions during Substorms (THEMIS) are analyzed to identify signatures ...

The Silurian to Permian history of a metamorphic core complex in Lofoten, northern Scandinavian Caledonides 

Steltenpohl, Mark; Hames, Willis; Andresen, Arild (2022-09-29)
[1] The Lofoten archipelago exposes Precambrian Baltic basement and Caledonian allochthonous sequences within a 1000 km long chain of gravity and magnetic highs and structural culminations along the extended, British and ...

Simulation of pressure pulses in the bow shock and magnetosheath driven by variations in interplanetary magnetic field direction 

Lin, Y; Swift, DW; Lee, LC; 0000-0003-4012-991X (2022-10-25)
Two-dimensional (2-D) hybrid simulations are carried out to study the effects of the variation in the interplanetary magnetic field (IMF) direction on the bow shock, magnetosheath, and magnetosphere. A curvilinear coordinate ...

Simulation studies of a recorder in three dimensions 

Giordano, Nicholas J. (2015-10-12)
The aeroacoustics of a recorder are explored using a direct numerical simulation based on the Navier–Stokes equations in three dimensions. The qualitative behavior is studied using spatial maps of the air pressure and ...

SIMULATION STUDY OF THE RIEMANN PROBLEM ASSOCIATED WITH THE MAGNETOTAIL RECONNECTION 

Lin, Y; Lee, L; 0000-0003-4012-991X (2022-10-11)
The structure of reconnection layer in the distant magnetotail is studied by solving the Riemann problem for the evolution of an initial current sheet using one-dimensional MHD and hybrid simulations. Initially, the current ...

Solar cycle variation of plasma mass density in the outer magnetosphere: Magnetoseismic analysis of toroidal standing Alfven waves detected by Geotail 

Takahashi, Kazue; Denton, Richard E.; Hirahara, Masafumi; Min, Kyungguk; Ohtani, Shin-ichi; Sanchez, Ennio; 0000-0002-2095-8529 (2020-06-05)
We study the variation of plasma mass density in the outer magnetosphere over a solar cycle using mass density estimated from the frequency of fundamental toroidal standing Alfven waves observed by the Geotail spacecraft. ...

Solar cycle variation of plasma mass density in the outer magnetosphere: Magnetoseismic analysis of toroidal standing Alfven waves detected by Geotail 

Takahashi, Kazue; Denton, Richard; Hirahara, Masafumi; Min, Kyungguk; Ohtani, Shin-ichi; Sanchez, Ennio; 0000-0002-9565-6840; 0000-0003-1434-4456 (2023-01-25)
We study the variation of plasma mass density in the outer magnetosphere over a solar cycle using mass density estimated from the frequency of fundamental toroidal standing Alfven waves observed by the Geotail spacecraft. ...

Solitary potential structures associated with ion and electron beams near 1 R-E altitude 

Bounds, SR; Pfaff, Rf; Knowlton, SF; Mozer, FS; Temerin, MA; Kletzing, CA (2020-06-30)
Small-scale solitary electric potential structures are commonly observed on auroral field lines with the Polar Electric Field Instrument (EFI). This study focuses on observations of solitary structures in the southern ...

Solitary potential structures associated with ion and electron beams near 1 R-E altitude 

Bounds, Scott; Pfaff, Robert; Knowlton, Stephen; Mozer, Forrest; Temerin, Michael; Kletzing, Craig; 0000-0002-4881-9715 (2022-10-27)
Small-scale solitary electric potential structures are commonly observed on auroral field lines with the Polar Electric Field Instrument (EFI). This study focuses on observations of solitary structures in the southern ...

Southern Two-Lined Salamander Diets in Urban and Forested Streams in Western Georgia 

Barrett, Kyle; Samoray, Stephen T.; Helms, Brian S.; Guyer, Craig; 0000-0003-4909-2690 (2022-03-03)
Streams are heavily affected by watershed urbanization as increased stormwater runoff changes their physical and chemical composition. Benthic macroinvertebrate species richness has been consistently shown to decline with ...