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- Description:
- The large lattice dynamics of lithium, driven by its low atomic mass, results in energetically similar structures and significant isotope effects under pressure, posing challenges to current theoretical models. Above 20 GPa and at low temperatures, lithium's electronic properties deviate from simple metallic behavior, with superconductivity emerging in a complex, pressure-dependent manner, alongside an unusual isotope effect. The structural phases of 7Li reported under these conditions are inconsistent across studies, and the structures of 6 Li remain unexamined. These gaps limit our understanding of the effects of pressure on lithium's electronic properties and the role of quantum lattice effects on its structural behavior under pressure. Here, we integrate experimental and theoretical approaches to investigate the low-temperature structural phase boundaries in lithium isotopes. We map the structural phase diagram of 7Li from 5 to 55 GPa and 15–75 K, identifying the sequence fcc→ℎ𝑅1→𝑐𝐼16. A pronounced isotope effect is observed, with 6Li shifting the fcc→ℎ𝑅1 phase boundary to lower pressures at 15 K. Density functional theory calculations further clarify how these structural changes affect superconducting properties, particularly emphasizing the role of the fcc→ℎ𝑅1 transition in lithium's superconductivity. Our findings offer insights into the unique behavior of lithium isotopes under pressure.
- Keyword:
- lithium isotopes
- Subject:
- Lithium--Isotopes
- Creator:
- Holle, William, Deemyad, Shanti, and Saffarian-Deemyad, Iren
- Owner:
- maddiego1@yahoo.com
- Date Uploaded:
- 02/13/2025
- Date Modified:
- 03/03/2025
- Date Created:
- 2019-10-10 to 2022-12-20
- License:
- CCO – As the data author, you are choosing to place your data into the public domain.
- Identifier:
- doi.org/10.7278/S5d-aq4d-1d3k
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- Description:
- The Cam FAIS Biomechanics data repository is a collection of hip 3D clinical computed tomography (CT) images (.nii), associated surface files of the proximal femur and ipsilateral hemipelvis (.k), and rigid body transforms (.txt). These datasets were collected for two different groups denoted by their group identifiers (Cam and Norm). For a detailed description of participant selection, data collection, and data processing methods, please refer to https://doi.org/10.1002/jor.24509.
- Keyword:
- Hip, Cam Femoroacetabular Impingement Syndrome, and Kinematics
- Subject:
- Biomechanics
- Creator:
- Anderson, Andrew E., Atkins, Penny R., Fiorentino, Niccolo, Lisonbee, Rich, Zitnay, Jared, and Schuring, Lindsay
- Owner:
- Based Near Label Tesim:
- Salt Lake City, Utah, United States
- Language:
- English
- Date Uploaded:
- 09/30/2025
- Date Modified:
- 10/08/2025
- Date Created:
- 2014-01-01 to 2016-01-01
- License:
- CC BY – Allows others to use and share your data, even commercially, with attribution.
- Resource Type:
- Dataset
- Identifier:
- https://doi.org/10.7278/S5d-btv7-ztpw
-
- Description:
- The Femur Statistical Shape Model data repository is a collection of hip 3D clinical computed tomography (CT) or magnetic resonance imaging (MRI) images (.nii.gz), associated surface files of the proximal femur (.vtk), and ShapeWorks project file (.xlsx) with related subject-specific correspondence models (.particles), groomed surface files (.vtk) and cutting planes (.json). These datasets were collected separately and under different conditions, so each of the datasets are separated into different groups denoted by their group identifiers (dod, fai, ihc, nih, and P). For a detailed description of participant selection, data collection, and data processing methods, please refer to https://doi.org/10.1177/23259671241309604. and See README file for data retrieval instructions.
- Keyword:
- Athlete, Cam Femoroacetabular Impingement Syndrome (FAIS), Femur, Statistical Shape Model, and Morphometrics
- Subject:
- Morphology
- Creator:
- Braun, Bergen, Anderson, Andrew E., Mozingo, Joseph, Lisonbee, Rich, Zitnay, Jared, and Schuring, Lindsay
- Owner:
- Based Near Label Tesim:
- Salt Lake City, Utah, United States
- Language:
- English
- Date Uploaded:
- 09/30/2025
- Date Modified:
- 10/08/2025
- Date Created:
- 01-01-2020 to 01-01-2023
- License:
- CC BY NC - Allows others to use and share your data non-commercially and with attribution.
- Resource Type:
- Dataset
- Identifier:
- https://doi.org/10.7278/S5d-g56x-w613
-
- Description:
- This dataset contains the code and data files to create the results published in the paper: Impact on Cloud Properties of Reduced-Sulphur Shipping Fuel in the Eastern North Atlantic, https://doi.org/10.5194/egusphere-2025-2075 The global reduction in shipping fuel sulphur that culminated in 2020 with an ~80% reduction has enabled an inadvertent experiment on the role of aerosol-cloud interaction (ACI) in the climate system. We compare observations collected at the Atmospheric Radiation Measurement program’s (ARM) Eastern North Atlantic site (ARM-ENA, 39.1 N, 28.0 W) during two June to September periods: 2016-2018 (pre-2020) and 2021-2023 (post-2020). We find a significant (~15%) decrease in cloud condensation nuclei concentrations post-2020, which resulted in a decrease in cloud droplet number (Nd) and an increase in effective radius (re) of marine boundary layer clouds. However, cloud liquid water path (LWP) increased post- 2020. The increase in LWP offset the increase in re, resulting in insignificant changes to the optical depth distribution. MODIS and CERES data in the vicinity of ENA during these periods produce similar results also with negligible change in the albedo and optical depth distributions. Regional cloud occurrence declined in line with changes in the large-scale meteorology. Our results point to a complicated interplay among the factors that modulate cloud feedback in the Eastern North Atlantic. This is the IDL code and data files to create the figures for the paper about the above research.
- Keyword:
- cloud properties, Eastern North Atlantic
- Subject:
- clouds and cloud physics
- Creator:
- Benson, Sally and Mace, Gerald G.
- Owner:
- Sally Benson
- Date Uploaded:
- 10/10/2025
- Date Modified:
- 11/05/2025
- Date Created:
- 2016-06-01 to 2023-09-30
- License:
- CC BY NC - Allows others to use and share your data non-commercially and with attribution.
- Identifier:
- https://doi.org/10.7278/S5d-ppzy-3nkj
-
- Description:
- Classification of barrier island morphology stems from the seminal work of M. O. Hayes and others, which linked island shape to tidal range and wave height and defined coastal energy regimes (i.e., wave-dominated, mixed energy, tide-dominated). If true, this general relationship represents a process-based framework to link modern and ancient systems, and is key for determining paleomorphodynamic relationships. Here we present a new semi-global database of barrier islands and spits (n = 702). Shape parameters (aspect, circularity, and roundness) are used to quantify island boundary shape, and assess potential correlation with coastal energy regime using global wave and tide models. In adopting the original energy classification as originally put forth (i.e., wave dominated, wave-influenced mixed, tide-influenced mixed, tide dominated), results show that wave-dominated islands have statistically different mean shape values from those in the mixed energy fields, but the two mixed energy designations are not distinct from each other. Furthermore, each energy regime field contains a wide range of island shapes, with no clear trends present. Linear regression modeling shows that tidal range and wave height account for < 10% of the documented variance in island shape, a strong indication that other controls must be considered. Therefore, while energy regime distinctions can be used descriptively, their utility in predicting and constraining island shape is limited: barrier island shape is not indicative of coastal energy regime, and vice versa. Our analysis also demonstrates empirical scaling relationships among modern barrier islands for the first time, with implications for subsurface prediction. and This is the dataset of the Modern Barrier Island Database published in Mulhern et al., 2017 Marine Geology paper titled "Is Barrier Island Morphology a Function of Wave and Tide Regime?" with the DOI https://doi.org/10.1016/j.margeo.2017.02.016. If using this dataset please cite both the dataset and the paper.
- Keyword:
- paleomorphodynamic relationships, geology, barrier island, shallow marine, island shape, wave-dominated islands, shoreline morphology, Modern Barrier Island Database, and coastal geomorphology
- Subject:
- Geology
- Creator:
- Johnson, Cari L., Mulhern, Julia S., and Martin, John M.
- Owner:
- Julia Mulhern
- Language:
- English
- Date Uploaded:
- 09/08/2021
- Date Modified:
- 06/03/2024
- Date Created:
- 2015-01-01 to 2017-12-31
- License:
- CC BY NC - Allows others to use and share your data non-commercially and with attribution.
- Resource Type:
- Dataset
- Identifier:
- https://doi.org/10.7278/S50d-5pzj-r9vr
-
- Description:
- While several studies have qualitatively investigated age- and region-dependent adhesion between the vitreous and retina, no studies have directly measured the vitreoretinal strength of adhesion. In this study, we developed a rotational peel device and associated methodology to measure the maximum and steady-state peel forces between the vitreous and the retina. Vitreoretinal adhesion in the equator and posterior pole were measured in human eyes from donors ranging 30 to 79 years of age, and in sheep eyes from premature, neonatal, young lamb, and young adult sheep. In human eyes, maximum peel force in the equator (7.24 ± 4.13 mN) was greater than in the posterior pole (4.08 ± 2.03 mN). This trend was especially evident for younger eyes from donors 30 to 39 years of age. After 60 years of age, there was a significant decrease in the maximum equatorial (4.69 ± 2.52 mN, p = 0.016) and posterior pole adhesion (2.95 ± 1.25 mN, p = 0.037). In immature sheep eyes, maximum adhesion was 7.60 ± 3.06 mN, and did not significantly differ between the equator and posterior pole until young adulthood. At this age, the maximum adhesion in the equator nearly doubled (16.67 ± 7.45 mN) that of the posterior pole, similar to the young adult human eyes. Light microscopy images suggest more disruption of the inner limiting membrane (ILM) in immature sheep eyes compared to adult sheep eyes. Interestingly, in human eyes, ILM disruption was significantly greater in the posterior pole (p < 0.05) and in people over 60 years of age (p < 0.02). These findings supplement the current discussion surrounding age-related posterior vitreous detachment, and the risk factors and physiological progressions associated with this condition. In addition, these data further our understanding of the biomechanical mechanisms of vitreoretinal adhesion, and can be used to develop age- appropriate computational models simulating retinal detachment, hemorrhaging, or retinal trauma. See Creveling CJ, Colter J, Coats B. 2018. Changes in vitreoretinal adhesion with age and region in human and sheep eyes. Frontiers in Bioengineering and Biotechnology 6. https://doi.org/10.3389/fbioe.2018.00153.
- Keyword:
- ophthalmology, retina, vitreous, adhesion, ocular, human, eye, peel test, and sheep
- Subject:
- Quantitative measurement and Vitreoretinal adhesion
- Creator:
- Coats, Brittany and Creveling, Christopher
- Contributor:
- Colter, Jourdan
- Owner:
- BRIAN MCBRIDE
- Based Near Label Tesim:
- Salt Lake City, Utah, United States
- Language:
- English
- Date Uploaded:
- 07/10/2019
- Date Modified:
- 06/03/2024
- Date Created:
- Completed 2017-06-01
- License:
- CC BY – Allows others to use and share your data, even commercially, with attribution.
- Resource Type:
- Image, Dataset, and Video
- Identifier:
- https://doi.org/10.7278/S5BK19H3
-
- Description:
- This repository contains the source code for the ReporTor plugin described in the paper: ReporTor: Facilitating User Reporting of Issues Encountered in Naturalistic Web Browsing via Tor Browser. ReporTor is a plugin for Tor Browser that enables voluntary, anonymous end-user reporting of issues encountered during web browsing. ReporTor provides automatic URL capture (with query parameters stripped for privacy), predefined issue categories, open-ended text input for additional detail, and manual entry fields for exit node and Tor Browser security level. All reports are transmitted over the Tor network to a database hosted via an onion service. If you use this work in your research, please cite the paper as follows: @article{micallef2026reportor, title = {ReporTor: Facilitating User Reporting of Issues Encountered in Naturalistic Web Browsing via Tor Browser}, author = {Micallef, Nicholas and Cartier, Cameron and Gallagher, Kevin and Zagal, Lucas and Patil, Sameer}, journal = {Proceedings on Privacy Enhancing Technologies}, volume = {2026}, issue = {1}, year ={2026}, series = {PoPETS '26}, }
- Keyword:
- User Experience, Privacy, Tor Browser, Issue Reports, Anonymity, and Tor
- Subject:
- Privacy-Enhancing Technologies
- Creator:
- Sameer Patil
- Owner:
- Madison Golden
- Date Uploaded:
- 11/05/2025
- Date Modified:
- 11/05/2025
- Date Created:
- 2025-11-04
- License:
- CC BY NC - Allows others to use and share your data non-commercially and with attribution.
- Resource Type:
- Software or Program Code
- Identifier:
- 10.7278/S5d-f8b6-satb
-
- Description:
- This is data set of the geomagnetic and geoelectric fields obtained from the three methods: Complex Image, Magnetotelluric, and Finite-Difference Time-Domain Methods in time and along the space. It also includes the spectrums of fields.
- Keyword:
- FDTD, Geoelectric fields, Complex Image Method, Magnetotelluric (MT) method)
- Subject:
- Electric fields, Magnetotelluric prospecting, Frequency spectra, and Time-domain analysis
- Creator:
- Sharma Paneru, Prashanna
- Owner:
- Date Uploaded:
- 10/14/2025
- Date Modified:
- 10/22/2025
- Date Created:
- 2024-11-01 to 2025-10-14
- License:
- Public Domain – This data is free of copyright restrictions (e.g. government sponsored data).
- Identifier:
- http://doi.org/10.7278/S5d-px9b-x8nb
-
- Description:
- This dataset provides measured maximum dynamic modulus (E_max*) values for eleven asphalt mixtures using Bending Beam Rheometer (BBR) tests at low temperatures (0°C to –24°C). It includes binder properties, RAP content, and volumetric parameters, with results compared to Hirsch model predictions. The dataset supports more accurate mechanistic-empirical pavement design, particularly for predicting fatigue, rutting, and thermal cracking.
- Keyword:
- Dynamic Modulus, Hirsch Model, Bending Beam Rheometer, Fatigue Cracking, Thermal Cracking, and Mechanistic‑Empirical Pavement Design
- Subject:
- Pavement design and Mathematical models
- Creator:
- Adejube, Jeremiah, Romero Zambrana, Pedro, Fieldkircher, Beatriz Paula, and VanFrank, Kevin M.
- Owner:
- Based Near Label Tesim:
- Salt Lake City, Utah, United States
- Language:
- English
- Date Uploaded:
- 09/04/2025
- Date Modified:
- 10/14/2025
- Date Created:
- 2024-01-08 to 2025-08-11
- License:
- CC BY – Allows others to use and share your data, even commercially, with attribution.
- Resource Type:
- Dataset
- Identifier:
- https://doi.org/10.7278/S5d-y2c1-jw38
-
- Description:
- This dataset contains extracellular neurophysiological recordings from long interval neurons in the midbrain of Pseudacris feriarum frogs collected from sympatric and allopatric populations (Alabama, Georgia, South Carolina). Frogs were presented with synthetic acoustic stimuli varying in pulse rate (5–70 pulses/s) to assess pulse rate selectivity. Data include neuronal responses to acoustic stimuli.
- Keyword:
- Reinforcement, Species recognition, Long interval neurons, and Temporal selectivity
- Subject:
- Neurophysiology, Acoustic Communication, Auditory System, Amphibians, and Pulse Rate Selectivity
- Creator:
- Mukhopadhyay, Anwesha, Kamath, Vinayak G. , McDowell, Jamie M., Acord, Auburn S., Alluri, Rishi K., Rose, Gary J., and Lemmon, Emily M.
- Owner:
- Based Near Label Tesim:
- Salt Lake City, Utah, United States
- Language:
- English
- Date Uploaded:
- 08/21/2025
- Date Modified:
- 08/29/2025
- Date Created:
- 2022-02-11 to 2025-6-11
- License:
- CC BY NC - Allows others to use and share your data non-commercially and with attribution.
- Resource Type:
- Dataset
- Identifier:
- https://doi.org/10.7278/S5d-6y5c-bdvx