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Modeling of a New Electron Acceleration Mechanism Ahead of Streamers 

Ihaddadene, Keven; Liu, Ningyu; Celestin, Sebastien; Shi, Feng; Joseph, Dwyer; 0000-0002-2220-3197 (2022-11-01)
Head-on collisions between negative and positive streamers have been proposed as a mechanism behind X-ray emissions by laboratory spark discharges. Recent simulations using plasma fluid and particle in cell models of a ...

Modeling the Dynamics of Radiation Belt Electrons With Source and Loss Driven by the Solar Wind 

Xiang, Zheng; Li, Xinlin; Kapali, Sudha; Gannon, Jennifer; Ni, Binbin; Zhao, Hong; Zhang, Kun; Khoo, Leng Ying; 0000-0003-0393-9833; 0000-0001-8292-7691; 0000-0002-4899-7917; 0000-0003-0412-1064; 0000-0002-1683-3192 (2022-11-16)
A radial diffusion model directly driven by the solar wind is developed to reproduce MeV electron variations between L = 2-12 (L is L* in this study) from October 2012 to April 2015. The radial diffusion coefficient, ...

Modeling the loss of inner belt protons by magnetic field line curvature scattering 

Weichao, Tu; Cowee, M; Liu, K; 0000-0003-3117-4030; 0000-0001-5882-1328; 0000-0003-4547-3269 (2022-09-30)
The sudden loss of energetic protons in the inner radiation belt has been observed during geomagnetic storms. It is hypothesized that this sudden loss occurs because of changes in the geomagnetic field configuration which ...

Modeling the loss of inner belt protons by magnetic field line curvature scattering 

Tu, Weichao; Cowee, M. M.; Liu, Kaijun; 0000-0001-5882-1328 (2020-06-05)
The sudden loss of energetic protons in the inner radiation belt has been observed during geomagnetic storms. It is hypothesized that this sudden loss occurs because of changes in the geomagnetic field configuration which ...

Modulation of Magnetosonic Waves by Background Plasma Density in a Dipole Magnetic Field: 2-D PIC Simulation 

Sun, Jicheng; Lu, Quanming; Wang, Xueyi; Liu, Xu; Gao, Xinliang; Yang, Huigen; 0000-0002-7211-0546; 0000-0003-3041-2682 (2022-11-08)
Recent satellite observations, combined with instability analyses, have shown that the background plasma density variation can modulate the magnetosonic (MS) waves by controlling the wave excitation. However, the detailed ...

Molecular genetic evidence that dinoflagellates belonging to the genus Symbiodinium freudenthal are haploid 

Santos, Scott R; Coffroth, Mary Alice (2019-08-02)
Microscopic and cytological evidence suggest that many dinoflagellates possess a haploid nuclear phase. However, the ploidy of a number of dinoflagellates remains unknown, and molecular genetic support for haploidy in this ...

Molecular responses of brains to cross-generational warming in a coral reef fish. 

Bernal, Moises A.; Schmidt, Elliott; Donelson, Jennifer; Munday, Phillip; Ravasi, Timothy; 0000-0002-3236-8403 (2021-12-17)
Ocean warming is a threat to marine biodiversity, as it can push marine species beyond their physiological limits. Detrimental effects can occur when marine poikilotherms are exposed to conditions beyond their optimal ...

Multi-approach synergic investigation between land surface temperature and land-use land-cover 

Saha, Prasenjit; Bandopadhyay, Subhajit; Kumar, Chandan; Mitra, Chandana (2020-03-17)
Rapid urban expansion and associated land-use land-cover (LULC) change in India have emerged as a serious environmental threat that accelerates the impacts of urban heat island intensity (UHII). Three independent ...

Multi-Event Studies of Sudden Energetic Electron Enhancements in the Inner Magnetosphere and Its Association With Plasmapause Positions 

Li, X; Khoo, L; Thaller, S; Hogan, B; 0000-0003-0412-1064; 0000-0002-1683-3192; 0000-0002-1654-2176; 0000-0001-8292-7691 (2022-10-04)
Sudden enhancements of energetic electrons (tens of keV to <500 keV) at low L-shells have been frequently observed by Van Allen Probes. It is, however, still unclear how deep these electrons can reach and what the responsible ...

Multi-Event Study on the Connection Between Subauroral Polarization Streams and Deep Energetic Particle Injections in the Inner Magnetosphere 

Califf, S; Zhao, H; Gkioulidou, M; Manweiler, J; Mitchell, D; Tian, S; 0000-0002-8800-2128; 0000-0001-8292-7691 (2023-01-25)
Energetic electron flux enhancements for 100s keV energies are often observed at low L shells (L < 4) in the inner magnetosphere during geomagnetic storms. However, protons with similar energies do not penetrate as deeply ...

Multi-Event Study on the Connection Between Subauroral Polarization Streams and Deep Energetic Particle Injections in the Inner Magnetosphere 

Califf, S; Zhao, H; Gkioulidou, M; Manweiler, J; Mitchell, D; Tian, S; 0000-0002-8800-2128; 0000-0001-8292-7691 (2023-01-25)
Energetic electron flux enhancements for 100s keV energies are often observed at low L shells (L < 4) in the inner magnetosphere during geomagnetic storms. However, protons with similar energies do not penetrate as deeply ...

Multiple colonizations lead to cryptic biodiversity in an island ecosystem: comparative phylogeography of anchialine shrimp species in the Ryukyu Archipelago, Japan 

Weese, David A; Fujita, Yoshihisa; Santos, Scott R (2019-08-02)
Archipelagos of the Indo-West Pacific are considered to be among the richest in the world in biodiversity, and phylogeographic studies generally support either the center of origin or the center of accumulation hypothesis ...

Multiple Colonizations Lead to Cryptic Biodiversity in an Island Ecosystem: Comparative Phylogeography of Anchialine Shrimp Species in the Ryukyu Archipelago, Japan 

Weese, David A; Fujita, Yoshihisa; Santos, Scott R.; 0000-0002-3447-4488 (2022-03-04)
Archipelagos of the Indo-West Pacific are considered to be among the richest in the world in biodiversity, and phylogeographic studies generally support either the center of origin or the center of accumulation hypothesis ...

nadiv: an R package to create relatedness matrices for estimating non-additive genetic variances in animal models 

Wolak, Mathew E.; 0000-0002-7962-0071 (2019-09-15)
1. The Non-Additive InVerses (nadiv) R software package contains functions to create and use non-additive genetic relationship matrices in the animal model of quantitative genetics. 2. This study discusses the concepts ...

Natural arsenic contamination of Holocene alluvial aquifers by linked tectonic, weathering, and microbial processes 

Saunders, James A.; Lee, Mingkuo; Uddin, Ashraf; Mohammad, S; Wilkin, Richard T.; Fayek, Mostafa; Korte, Nic E.; 0000-0002-8635-9545; 0000-0002-6334-7939 (2022-10-26)
Linked tectonic, geochemical, and biologic processes lead to natural arsenic contamination of groundwater in Holocene alluvial aquifers, which are the main threat to human health around the world. These groundwaters are ...

Nemertean toxin genes revealed through transcriptome sequencing 

Whelan, Nathan V; Kocot, Kevin M; Santos, Scott R; Halanych, Kenneth M (2019-04-29)
Nemerteans are one of few animal groups that have evolved the ability to utilize toxins for both defense and subduing prey, but little is known about specific nemertean toxins. In particular, no study has identified specific ...

Net superoxide levels: steeper increase with activity in cooler female and hotter male lizards 

Ballen, Cissy J.; Healey, Mo; Wilson, Mark; Tobler, Michael; Wapstra, Erik; Olsson, Mats (2023-09-20)
Ectotherms increase their body temperature in response to ambient heat, thereby elevating their metabolic rate. An often inferred consequence of this is an overall upregulation of gene expression and energetic expenditure, ...

New Valley Project 

Chaney, Philip L (2022-04-26)
This file contains a digital map of the New Valley Project (Egypt) in Google Earth KMZ format that was produced as part of The IBT Water Project at Auburn University. The New Valley Project, also known as Toshka Project, ...

Noble gas abundance and isotope ratios in the atmosphere of Jupiter from the Galileo Probe Mass Spectrometer 

Mahaffy, P; Niemann, H; Alpert, A; Atreya, S; Demick, J; Donahue, T; Harpold, D; Owen, T; 0000-0003-1896-1726 (2023-01-25)
The Galileo Probe Mass Spectrometer provided the first data on the noble gas mixing and isotope ratios in the Jovian atmosphere. These measurements and the comparison with solar values constrain models of Jupiter's formation. ...

The NSF/DOE Partnership in Basic Plasma Science & Engineering at 20: Report on the Anniversary Workshop 

Zweibel, Ellen; Brown, Michael; Mauel, Michael; Milchberg, Howard; Rocca, Jorge; Thomas, Edward Jr; 0000-0002-7747-0284 (2019-11-11)
A workshop recognizing the 20th anniversary of the NSF/DOE Partnership in Basic Plasma Science and Engineering was held at NSF on January 9-11, 2017. The workshop demonstrated some of the remarkable research and broader ...