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- Creator:
- Morgan, Rachel K, Tapaswi, Anagha, and Colacino, Justin
- Description:
- SH-SY5Y cells were differentiated into neuron-like cells in the presence of continuous and environmentally relevant levels of lead (Pb). Cells were collected every three days (beginning on day 6 of the 18 day protocol) for the purposes of RNA extraction and subsequent sequencing.
- Keyword:
- Neurotoxicology, Chemical Exposure, Benchmark Dose, Transcriptomics
- Citation to related publication:
- Rachel K. Morgan, Anagha Tapaswi, Katelyn M. Polemi, Elizabeth C. Tolrud, Kelly M. Bakulski, Laurie K. Svoboda, Dana C. Dolinoy, Justin A. Colacino bioRxiv 2024.10.29.620844; doi: https://doi.org/10.1101/2024.10.29.620844
- Discipline:
- Health Sciences
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- Creator:
- Zetterberg, Daniel S., Huang, Xianglei, Hörner, Johannes, and Voigt, Aiko
- Description:
- The data and code stored in this repository present the results of the paper "Instantaneous radiative effect of surface long wave spectral emissivity in a Snowball Earth simulation." In this paper, we calculate the instantaneous radiative effects of surface spectral emissivity for a Snowball Earth simulation, and find that including surface spectral emissivity has a large effect on the radiation budget. For clear-sky conditions, using ice or spectral emissivity can decrease outgoing long wave radiation by 3.4 or 1.1 W/m^2, respectively, globally averaged. This large effect could impact the simulated climate state of a Snowball Earth and potentially strengthen the Jormungand mechanism. Additionally, the large difference between ice and snow highlights the importance of precipitation processes in Snowball modeling. and This repository contains the results of the calculations and the data and code needed to recreate the manuscript figures. It contains atmospheric conditions from the simulations run by JH and AV that were processed by DSZ. It also contains emissivity datasets that were compiled by Huang et al. 2016 ("A global data set of surface spectral emissivity for GCM and NWP use") that were processed by DSZ and XLH. The results of the study are contained in netcdf files. The README file offers a description, and the Jupyter notebook contained demonstrates how to access, use, and plot the calculations.
- Keyword:
- Spectral surface emissivity, Snowball Earth, paleoclimate modeling
- Citation to related publication:
- Zetterberg, D.S., Huang, X.L., Hörner, J., & Voigt, A. Instantaneous radiative effect of surface long wave spectral emissivity in a Snowball Earth simulation. Submitted to Journal of Geophysical Research: Atmospheres, February 2025
- Discipline:
- Science
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- Creator:
- Keebler, Timothy B., Toth, Gabor, Chen, Yuxi, and Wang, Xiantong
- Description:
- The Space Weather Modeling Framework (SWMF) was run in the Michigan Geospace configuration, as well as in the MHD-AEPIC configuration, for two extreme space weather events. Output is provided in the standard SWMF format, as well as in text files for easy accessibility.
- Keyword:
- magnetosphere, MHD-AEPIC, SWMF, Geospace, PIC, geomagnetic storms, numerical simulation, computational physics
- Citation to related publication:
- Keebler, T.B., et al. (2025). Simulating extreme space weather with kinetic magnetotail reconnection. Space Weather. Forthcoming.
- Discipline:
- Science
-
- Creator:
- Jones, Kaylin, Fernández Correa, Mariana I., Malherbe, Julien, and Cotel, Aline J.
- Description:
- Sea lampreys (Petromyzon marinus) are an invasive species of concern in the Laurentian Great Lakes. Their predation on native species has degraded the ecological and economic health of the region. They are thus targeted for removal through various means, including trapping. Currently, sea lamprey traps are somewhat inefficient, believed to be partially due to their “entrance flows”, or the flow patterns induced by these traps that are felt by approaching sea lampreys. This study experimentally quantifies these flows. Models of two common sea lamprey trap designs were built and installed in a water tunnel in the University of Michigan Hydraulics Lab, and attraction flows were measured using Particle Image Velocimetry (PIV) with minimal background turbulence. Velocity, velocity gradient, and vorticity distributions in the flow are evaluated from the PIV data. These same models were installed in larger-scale raceways at USGS’ Hammond Bay Biological Station, and attraction flows were again measured using PIV to explore how these patterns change in a more turbulent environment that better mimics natural conditions. and Hammond Bay Biological Station (HBBS) is a research center that aims to develop control measures for sea lampreys and conduct research to aid native fish restoration. HBBS is a field station of the USGS Great Lakes Science Center (GLSC) managed by the Great Lakes Fishery Commission (GLFC). More information on HBBS can be found here: https://www.usgs.gov/centers/great-lakes-science-center/science/hammond-bay-biological-station.
- Keyword:
- Entrance Flows, sea lamprey, Great Lakes, hydrodynamics, invasive species, particle image velocimetry, sea lamprey, sea lamprey traps, and turbulence
- Citation to related publication:
- Jones, Kaylin, et. al. 2024. Investigating entrance hydrodynamics of sea lamprey traps. Canadian Journal of Fisheries and Aquatic Sciences. XX(X): XXX-XXX. https://doi.org/XX.XXXX/cjfas-XXXX.
- Discipline:
- Engineering
-
- Creator:
- Zhu, Yongxian, Deng, Sidi, and Cooper, Daniel R
- Description:
- This dataset is curated as a byproduct of the "Material and Vehicle Design for High-Value Recycling of Aluminum and Steel Automotive Sheet" project, funded by the REMADE Institute of the Department of Energy and referred to as the "Clean Sheet Project" in the file "electricity scenarios slides.pptx." The dataset presents projected U.S. electricity emission factors (MJ primary energy or gCO2/kWh electricity delivered) under various scenarios, including different levels of uptake of the U.S. Inflation Reduction Act. The projections are based on estimated trends in the U.S. electricity generation mix, along with the authors' analysis of the energy and emission intensities of relevant power sources. The dataset supports research—particularly life cycle assessment—relying on U.S. regional energy profile and emissions factors.
- Keyword:
- Electricity Mix, Renewable Energy, Greenhouse Gas Emissions, Decarbonization, and Net-Zero
- Discipline:
- Engineering and General Information Sources
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- Creator:
- Mirshams Shahshahani, Payam
- Description:
- Please see Payam Mirshams Shahshahani's University of Michigan doctoral dissertation: https://deepblue.lib.umich.edu/bitstream/handle/2027.42/155254/mirshams_1.pdf?sequence=1
- Keyword:
- unipedal balance, hip muscle strength and endurance, age, hip moment
- Citation to related publication:
- Mirshams Shahshahani, Masteling and Ashton-Miller, article under review in IISE Transactions on Occupational Ergonomics & Human Factors, Supplement, Festschrift for Professor Thomas J. Armstrong
- Discipline:
- Engineering
-
- Creator:
- Fu, Xun, Zhang, Bohao, Weber, Ceri J., Cooper, Kimberly L., Vasudevan, Ram, and Moore, Talia Y.
- Description:
- Tails used as inertial appendages induce body rotations of animals and robots---a phenomenon that is governed largely by the ratio of the body and tail moments of inertia. However, vertebrate tails have more degrees of freedom (e.g., number of joints, rotational axes) than most current theoretical models and robotic tails. To understand how morphology affects inertial appendage function, we developed an optimization-based approach that finds the maximally effective tail trajectory and measures error from a target trajectory. For tails of equal total length and mass, increasing the number of equal-length joints increased the complexity of maximally effective tail motions. When we optimized the relative lengths of tail bones while keeping the total tail length, mass, and number of joints the same, this optimization-based approach found that the lengths match the pattern found in the tail bones of mammals specialized for inertial maneuvering. In both experiments, adding joints enhanced the performance of the inertial appendage, but with diminishing returns, largely due to the total control effort constraint. This optimization-based simulation can compare the maximum performance of diverse inertial appendages that dynamically vary in moment of inertia in 3D space, predict inertial capabilities from skeletal data, and inform the design of robotic inertial appendages. and 2025-01-31: In this update, we include the code required to run the simulations and optimizations. We updated the readme file to reflect this addition
- Keyword:
- simulation, inertial maneuvering, caudal vertebrae, trajectory optimization, and reconfigurable appendages
- Citation to related publication:
- Xun Fu, Bohao Zhang, Ceri J. Weber, Kimberly L. Cooper, Ram Vasudevan, Talia Y. Moore. (in review) Jointed tails enhance control of three-dimensional body rotation.
- Discipline:
- Engineering and Science
-
- Creator:
- Smolenski, Shane, Wen, Ming, Li, Qiuyang, Downey, Eoghan, Alfrey, Adam, Liu, Wenhao, Kondusamy, Aswin L. N., Bostwick, Aaron, Jozwiak, Chris, Rotenberg, Eli, Zhao, Liuyan, Deng, Hui, Lv, Bing, Zgid, Dominika, Gull, Emanuel, and Jo, Na Hyun
- Description:
- The optical properties of the 2D magnet CrSBr were explored through photoluminescence/reflectance, angle-resolved photoemission spectroscopy, and self-consistent GW calculations. These data reveal a large exciton binding energy in bulk CrSBr that is attributed to localization arising from the quasi-1D electronic structure.
- Keyword:
- Magnetism, Exciton, and ARPES
- Citation to related publication:
- Smolenski, S. et al., Large Exciton Binding Energy in the Bulk van der Waals Magnet CrSBr. arXiv:2403.13897 (2024) and Smolenski, S., Wen, M., Li, Q. et al. Large exciton binding energy in a bulk van der Waals magnet from quasi-1D electronic localization. Nat Commun 16, 1134 (2025). https://doi.org/10.1038/s41467-025-56457-x
- Discipline:
- Science
-
- Creator:
- An, Yifu
- Description:
- We have ported our MHD code, BATSRUS ( https://github.com/SWMFsoftware/BATSRUS), to the GPU. This dataset contains the input parameters and raw timing results for the Paper. To reproduce the results, please follow the instructions and use the software specifications contained in readme.txt. and Abstract: BATSRUS, our state-of-the-art extended magnetohydrodynamic code, is the most used and one of the most resource-consuming models in the Space Weather Modeling Framework. It has always been our objective to improve its efficiency and speed with emerging techniques, such as GPU acceleration. To utilize the GPU nodes on modern supercomputers, we port BATSRUS to GPUs with the OpenACC API. Porting the code to a single GPU requires rewriting and optimizing the most used functionalities of the original code into a new solver, which accounts for around 1% of the entire program in length. To port it to multiple GPUs, we implement a new message passing algorithm to support its unique block-adaptive grid feature. We conduct weak scaling tests on as many as 256 GPUs and find good performance. The program has 50-60% parallel efficiency on up to 256 GPUs, and up to 95% efficiency within a single node (4 GPUs). Running large problems on more than one node has reduced efficiency due to hardware bottlenecks. We also demonstrate our ability to run representative magnetospheric simulations on GPUs. The performance for a single A100 GPU is about the same as 270 AMD "Rome" CPU cores, and it runs 3.6 times faster than real time. The simulation can run 6.9 times faster than real time on four A100 GPUs.
- Keyword:
- BATSRUS, GPU, and MHD simulation
- Citation to related publication:
- An, Y., Chen, Y., Zhou, H., Gaenko, A. and Toth, G. (2024). BATSRUS GPU: Faster than Real Time Magnetospheric Simulations with a Block Adaptive Grid Code. Being revised. A preprint is available at http://arxiv.org/abs/2501.06717.
- Discipline:
- Engineering
-
- Creator:
- Heath, Jeffrey
- Description:
- Documentary videos of pottery making, notably a four-part documentary of one potter's work. Credits are at the end of videos. Additional documentaries from Mali may be added later.
- Keyword:
- pottery
- Discipline:
- Humanities