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Recent Submissions

  • CFD Analysis of the Location of a Rear Wing on an Aston Martin DB7 in Order to Optimize Aerodynamics for Motorsports 

    O’Driscoll, Thomas P.; Barron, Andrew R. (2022)
    The purpose of this study is to identify the initial lateral and vertical location and angle of attack of a GT4-style rear wing on the rear downforce for an Aston Martin DB7 Vantage, prior to installation. The tests were completed with a two-dimensional model, using the Computational Fluid Dynamics (CFD) software, Fluent Ansys. The tests were completed ...
  • Rapid retreat of Thwaites Glacier in the pre-satellite era 

    Graham, Alastair G. C.; Wåhlin, Anna; Hogan, Kelly A.; Nitsche, Frank O.; Heywood, Karen J.; (2022)
    Understanding the recent history of Thwaites Glacier, and the processes controlling its ongoing retreat, is key to projecting Antarctic contributions to future sea-level rise. Of particular concern is how the glacier grounding zone might evolve over coming decades where it is stabilized by sea-floor bathymetric highs. Here we use geophysical data ...
  • High-surface-area corundum nanoparticles by resistive hotspot-induced phase transformation 

    Deng, Bing; Advincula, Paul A.; Luong, Duy Xuan; Zhou, Jingan; Zhang, Boyu; (2022)
    High-surface-area α-Al2O3 nanoparticles are used in high-strength ceramics and stable catalyst supports. The production of α-Al2O3 by phase transformation from γ-Al2O3 is hampered by a high activation energy barrier, which usually requires extended high-temperature annealing (~1500 K, > 10 h) and suffers from aggregation. Here, we report the synthesis ...
  • Recent Ostracod Fauna of the Western Ross Sea (Antarctica): A Poorly Known Ingredient of Polar Carbonate Factories 

    Salvi, Gianguido; Anderson, John B.; Bertoli, Marco; Castagno, Pasquale; Falco, Pierpaolo; (2022)
    Ostracoda are a minor but recurrent component of Southern Ocean marine carbonate factories, and their low-Mg calcitic skeletal mineralogy helps in ensuring a noteworthy post-mortem resilience. Our study, based upon surface sediment occurrences, contributes to the better definition of their distribution vs. potential controlling factors in Antarctic ...
  • Artificial Soils Reveal Individual Factor Controls on Microbial Processes 

    Del Valle, Ilenne; Gao, Xiaodong; Ghezzehei, Teamrat A.; Silberg, Jonathan J.; Masiello, Caroline A. (2022)
    Soil matrix properties influence microbial behaviors that underlie nutrient cycling, greenhouse gas production, and soil formation. However, the dynamic and heterogeneous nature of soils makes it challenging to untangle the effects of different matrix properties on microbial behaviors. To address this challenge, we developed a tunable artificial soil ...
  • A Framework for the Systematic Selection of Biosensor Chassis for Environmental Synthetic Biology 

    Sridhar, Swetha; Ajo-Franklin, Caroline M.; Masiello, Caroline A. (2022)
    Microbial biosensors sense and report exposures to stimuli, thereby facilitating our understanding of environmental processes. Successful design and deployment of biosensors hinge on the persistence of the microbial host of the genetic circuit, termed the chassis. However, model chassis organisms may persist poorly in environmental conditions. In ...
  • Collaborative experience between scientific software projects using Agile Scrum development 

    Baxter, Amanda L.; BenZvi, Segev Y.; Bonivento, Walter; Brazier, Adam; Clark, Michael; (2022)
    Developing sustainable software for the scientific community requires expertise in software engineering and domain science. This can be challenging due to the unique needs of scientific software, the insufficient resources for software engineering practices in the scientific community, and the complexity of developing for evolving scientific contexts. ...
  • Evidence for Nonlinear Gluon Effects in QCD and Their Mass Number Dependence at STAR 

    STAR Collaboration (2022)
    The STAR Collaboration reports measurements of back-to-back azimuthal correlations of di-π0s produced at forward pseudorapidities (2.6<η<4.0) in p+p, p+Al, and p+Au collisions at a center-of-mass energy of 200 GeV. We observe a clear suppression of the correlated yields of back-to-back π0 pairs in p+Al and p+Au collisions compared to the p+p data. ...
  • Gemini-LIGHTS: Herbig Ae/Be and Massive T Tauri Protoplanetary Disks Imaged with Gemini Planet Imager 

    Rich, Evan A.; Monnier, John D.; Aarnio, Alicia; Laws, Anna S. E.; Setterholm, Benjamin R.; (2022)
    We present the complete sample of protoplanetary disks from the Gemini- Large Imaging with the Gemini Planet Imager Herbig/T Tauri Survey, which observed bright Herbig Ae/Be stars and T Tauri stars in near-infrared polarized light to search for signatures of disk evolution and ongoing planet formation. The 44 targets were chosen based on their near- ...
  • Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at √s=13 TeV 

    CMS Collaboration (2022)
    A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, and corresponds to an integrated luminosity of 138 fb−1. No deviation from the ...
  • An empirical model of proton RBE based on the linear correlation between x-ray and proton radiosensitivity 

    Flint, David B.; Ruff, Chase E.; Bright, Scott J.; Yepes, Pablo; Wang, Qianxia; (2022)
    Background Proton relative biological effectiveness (RBE) is known to depend on physical factors of the proton beam, such as its linear energy transfer (LET), as well as on cell-line specific biological factors, such as their ability to repair DNA damage. However, in a clinical setting, proton RBE is still considered to have a fixed value of 1.1 ...
  • Roadmap on Machine learning in electronic structure 

    Kulik, H. J.; Hammerschmidt, T.; Schmidt, J.; Botti, S.; Marques, M. A. L.; (2022)
    In recent years, we have been witnessing a paradigm shift in computational materials science. In fact, traditional methods, mostly developed in the second half of the XXth century, are being complemented, extended, and sometimes even completely replaced by faster, simpler, and often more accurate approaches. The new approaches, that we collectively ...
  • Search for charged-lepton flavor violation in top quark production and decay in pp collisions at s√ = 13 TeV 

    The CMS collaboration (2022)
    Results are presented from a search for charged-lepton flavor violating (CLFV) interactions in top quark production and decay in pp collisions at a center-of-mass energy of 13 TeV. The events are required to contain one oppositely charged electron-muon pair in the final state, along with at least one jet identified as originating from a bottom quark. ...
  • Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars 

    Gwizd, S.; Fedo, C.; Grotzinger, J.; Banham, S.; Rivera-Hernández, F.; (2022)
    This study utilizes instruments from the Curiosity rover payload to develop an integrated paleoenvironmental and compositional reconstruction for the 65-m thick interval of stratigraphy comprising the Hartmann's Valley and Karasburg members of the Murray formation, Gale crater, Mars. The stratigraphy consists of cross-stratified sandstone (Facies 1), ...
  • Increasing Health Risks During Outdoor Sports Due To Climate Change in Texas: Projections Versus Attitudes 

    Dee, Sylvia G.; Nabizadeh, Ebrahim; Nittrouer, Christine L.; Baldwin, Jane W.; Li, Chelsea; (2022)
    Extreme heat is a recognized threat to human health. This study examines projected future trends of multiple measures of extreme heat across Texas throughout the next century, and evaluates the expected climate changes alongside Texas athletic staff (coach and athletic trainer) attitudes toward heat and climate change. Numerical climate simulations ...
  • Origin of Dawnside Subauroral Polarization Streams During Major Geomagnetic Storms 

    Lin, Dong; Wang, Wenbin; Merkin, Viacheslav G.; Huang, Chaosong; Oppenheim, Meers; (2022)
    Solar eruptions cause geomagnetic storms in the near-Earth environment, creating spectacular aurorae visible to the human eye and invisible dynamic changes permeating all of geospace. Just equatorward of the aurora, radars and satellites often observe intense westward plasma flows called subauroral polarization streams (SAPS) in the dusk-to-midnight ...
  • Clumped-Isotope Constraint on Upper-Tropospheric Cooling During the Last Glacial Maximum 

    Banerjee, Asmita; Yeung, Laurence Y.; Murray, Lee T.; Tie, Xin; Tierney, Jessica E.; (2022)
    Ice cores and other paleotemperature proxies, together with general circulation models, have provided information on past surface temperatures and the atmosphere's composition in different climates. Little is known, however, about past temperatures at high altitudes, which play a crucial role in Earth's radiative energy budget. Paleoclimate records ...
  • Absolutely continuous spectrum for CMV matrices with small quasi-periodic Verblunsky coefficients 

    Li, Long; Damanik, David; Zhou, Qi (2022)
    We consider standard and extended CMV matrices with small quasi-periodic Verblunsky coefficients and show that on their essential spectrum, all spectral measures are purely absolutely continuous. This answers a question of Barry Simon from 2005.
  • Analysis of delivery and recalculation of dose using DICOM treatment records 

    Chen, Z.; Moyers, M. F.; Deng, Y.; Chen, H. L.; Li, J.; (2022)
    Objective A procedure has been proposed for patient-specific QA that, instead of comparing a measurement to the planned dose, compares the dose calculated by an independent system to the dose calculated by the planning system. It is still prudent, however, to check the accuracy of the beam delivery. For this purpose, the DICOM records from the first ...
  • Brain Radiation Necrosis Outside the Target Volume After Proton Radiation Therapy: Analyses of Multiparametric Imaging and Proton Biologic Effectiveness 

    Bronk, Julianna K.; Amer, Ahmad; Khose, Swapnil; Flint, David; Adair, Antony; (2022)
    Purpose We present the case of a 48-year-old patient with recurrent World Health Organization grade II meningioma in the left occipital region who underwent a subtotal resection, followed by postoperative proton therapy to residual disease and the resection cavity. Fourteen months after radiation treatment completion, surveillance imaging revealed ...

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