UMD Data Collection

Permanent URI for this collectionhttp://hdl.handle.net/1903/27670

University of Maryland faculty and researchers can upload their research products in DRUM for rapid dissemination, global visibility and impact, and long-term preservation. Depositing data in DRUM can assist in compliance with data management and sharing requirements from the NSF, NIH, and other funding agencies and journals. You can also deposit code, documents, images, supplemental material, and other research products. DRUM tracks views and downloads of your research, and all DRUM records are indexed by Google and Google Scholar. Additionally, DRUM assigns permanent DOIs for your items, making it easy for other researchers to cite your work.

Submissions to the Data Collection

To add files to the UMD Data Collection, submit a new item through your associated department or program's DRUM collection and check the box indicating your upload contains a dataset.

Find more information and guidelines for depositing into the Data Collection on the University of Maryland Libraries' DRUM for Data page.

Assistance

Please direct questions regarding the UMD Data Collection or assistance in preparing and depositing data to: lib-research-data@umd.edu.

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Search Results

Now showing 1 - 10 of 180
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    SLP 2024
    (2025-04-25) Brewer, Holly; Brewer, Holly
    XML and PDF files for Slavery, Law, and Power grant documents for the 2024 NHPRC. Original images have been given copyright permissions by their respective archival institution and transcription and introductions are original scholarship from SLP project staff. Transcriptions and Introductions are stored using long term XML plaintext encoding while the images are stored as PDFs.
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    Dataset for Figures in Robust Wave Splitters Based on Scattering Singularities in Complex non-Hermitian Systems
    (2025) Erb, Jared; Anlage, Steven
    This is the dataset used to create all the figures in the paper: Robust Wave Splitters Based on Scattering Singularities in Complex non-Hermitian Systems.
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    A Facile Synthesis of Bulk LiPON in Solution for Solid-State Electrolyte
    (2025) Gomez, Osma; Antar, Adam; Hall, Alex; Tapia-Aracayo, Leopoldo; Seo, Joshua; Kim, Nam; Sun, Zihan; Lim, Ryan; Chen, Fu; Li, Yue; Cumings, John; Rubloff, Gary; Lee, Sang Bok; Stewart, David; Wang, Yang; Lee, Sang Bok; Cumings, John; Rubloff, Gary
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    Lava River Cave IMU (Moasure) Traverse
    (2025) Wang, Jingchuan; Schmerr, Nicholas; Porter, Ryan; Whelley, Patrick
    Lava River Cave near Flagstaff, Northern Arizona, is a lava tube approximately 1.25 km long and 15 m wide. The cave has been previously mapped by manual sketching and, recently, mobile light detection and ranging (LiDAR; King et al., 2023). However, large discrepancies remain in the absolute positioning of the cave passage, likely owing to poor GPS reception in the pine forest. To address this inconsistency, we performed a 350 m traverse of the cave passage starting at the cave entrance and ending at the pillar where the tube bifurcates and reconnects, while tracking the movement using a Moasure 2 PRO, a motion-based measuring tool (inertial measurement unit). The resulting 3D spatial dataset in Cartesian coordinates was then georeferenced using a straight path north of the cave and the nearby parking lot as base stations.
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    Insoluble Acyclic Cucurbit[n]uril-Type Receptors Capture Iodine from the Vapor Phase
    (Wiley: Chemistry European Journal, 2024-09-27) Perera, Suvenika; Shaurya, Alok; Zeppuhar, Andrea; Chen, Fu; Zavalij, Peter Y.; Gaskell, Karen; Isaacs, Lyle; Isaacs, Lyle
    Nuclear energy makes large contributions toward meeting global energy needs, but societal concerns remain high given the impacts of the intended release of radioactive materials including 129I and 131I. In this paper we explore the use of a homologous series of acyclic CB[n] type hosts (H1–H4) as adsorbents of iodine from the vapor phase. We find that H2–H4, but not H1 – perform well in this application with uptake capacities of 2.2 g g−1, 1.5 g g−1, and 1.9 g g−1, respectively. The chemisorptive uptake process involves partial oxidation of catechol walled H2 to quinone walled host and capture of I3− and I5−. Solid H2 can be regenerated by treatment with Na2S2O4 and reused at least five times. The x-ray crystal structure of H2 is also reported.
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    A Swarm of WASP Planets: Nine giant planets identified by the WASP survey
    (2025) Schanche, Nicole
    The Wide Angle Search for Planets (WASP) survey provided some of the first transiting hot Jupiter candidates. With the addition of the Transiting Exoplanet Survey Satellite (TESS), many WASP planet candidates have now been revisited and given updated transit parameters. In the accompanying paper, we present 9 transiting planets orbiting FGK stars that were identified as candidates by the WASP survey and measured to have planetary masses by radial velocity measurements. Subsequent space-based photometry taken by TESS as well as ground-based photometric and spectroscopic measurements have been used to jointly analyze the planetary properties of WASP-102 b, WASP-116 b, WASP-149 b WASP-154 b, WASP-155 b, WASP-188 b, WASP-194 b/HAT-P-71 b, WASP-195 b, and WASP-197 b. These planets have radii between 0.9 R_Jup and 1.4 R_Jup, masses between 0.1 M_Jup and 1.5 M_Jup, and periods between 1.3 and 6.6 days.
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    COMSOL models for working-electrode/solid-electrolyte under mechanical loadings
    (2025) Jung, Taeho; Song, Yueming; Valentino, Gianna M; Albertus, Paul
    The attached COMSOL models simulate the mechanical state of a working-electrode/solid-electrolyte system under the following loading conditions. * Scenario I - working electrode under out-of-plane uniaxial compression * Scenario II - solid electrolyte under in-plane uniaxial compression * Scenario III - solid electrolyte under pure shear
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    Active Seismic Exploration of Planetary Subsurfaces via Compressive Sensing
    (2025) Wang, Jingchuan; Schmerr, Nicholas; Lekic, Vedran
    The software supports the following study: We present a method for improving seismic data collection on planetary surfaces such as the Moon and Mars. This approach is based on recent advances in compressive sensing technology to reduce the number of data collection points required compared to conventional methods without sacrificing the quality of the resulting subsurface images. We demonstrate its effectiveness using both synthetic and field data from locations with similarities to planetary surface environments. The method is then applied to reanalyze seismic data collected by the crew of the Apollo 14 and 16 missions. Our study has implications for mission planning, as this method can make space missions more efficient by reducing the equipment and time to collect geophysical data on planetary surfaces. It also makes it possible to reconstruct missing or damaged data, improving the quality of imagery and enhancing our understanding of the interior of other worlds.
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    Dataset for Constraining Wetland and Landfill Methane Emission Signatures Through Atmospheric Methane Clumped Isotopologue Measurements" [Paper #2024JG008249-T]
    (2025) Sun, Jiayang; Farquhar, James
    From Primary Paper: Microbial methane emissions are associated with a wide range of isotopic signatures, providing information about the sources and sinks of methane. Methods of directly sampling methane from environments such as wetlands may fail to capture the temporal and spatial variations in emissions at a specific site and time. The Keeling plot method is commonly used to infer the overarching isotopic signatures of methane sources. In this study, we have expanded the application of the Keeling plot from conventional stable isotope ratios to include novel clumped isotopologue compositions of methane. This advancement aims to provide more robust constraints on regional methane emission signatures. We analyzed methane isotopologue compositions from air samples collected above wetlands and landfills across Maryland, USA, and determined the endmember compositions for background air, wetland, and landfill sources. Our findings indicate that the isotopologue compositions of methane from regional wetland emissions exhibit seasonal variations — δ13C and δD values become less positive as winter approaches, reflecting changes in methane oxidation and production rates. The continuous monitoring of air methane isotopologue signatures will deepen our understanding of the seasonal patterns in methane emissions and contribute to refining the global methane budget, as valuable insights can be extracted from these measurements.