Mountain Scholar

Mountain Scholar is an open access repository service that collects, preserves, and provides access to digitized library collections and other scholarly and creative works from Colorado State University and the University Press of Colorado. It also serves as a dark archive for the Open Textbook Library.

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Colorado State University, Fort Collins 28303
Explore the Colorado State University community’s scholarly output as well as items from the University at large and the CSU Libraries.
Open Textbook Library Archive 25
A limited number of titles are available here. To see all OTL titles, please visit the Open Textbook Library at https://open.umn.edu/opentextbooks. Only Open Textbook Library staff have access to all OTL Archive titles held in Mountain Scholar.
University Press of Colorado 1088
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Recent Submissions

Access status: Open Access ,
Assessing public park tree canopy diversity in Fort Collins, CO
(2025-12) Gutru, Jake, author; Mola, John, advisor; Hart, Sarah, committee member
The urban canopy of Fort Collins provides tens of thousands of dollars to the city in the form of decreased heating/cooling costs, reduced stormwater runoff, and increased property value for residents. To preserve these benefits, these trees should be managed with diversity and potential disturbances in mind. Specifically, public parks should be closely examined as they are areas of high recreational traffic, which could mean diseases are more likely to be introduced here. This paper describes how publicly available data was used to examine the tree species diversity and adherence to the 10/20/30 rule for 53 public parks across Fort Collins. Despite Fort Collins' assessment of the state of their urban canopy in their Urban Forest Strategic Plan, only 2 of the 53 parks adhere to the 10/20/30 rule. Parks which are particularly diverse or non-diverse for their size are highlighted, and potential actions that the town can take to manage these parks are suggested based on these findings.
Access status: Open Access ,
Mo occupancy along crystallographic shear planes in the Wadsley–Roth compound MoxNb12W1-xO33 enables multi-electron redox behavior
(2026-05-21) Salzar, Luke D., author; Gervais, Claire Y., author; Squires, Alexander G., author; Manche, Alexis G., author; Lustig, Danielle R., author; Prieto, Amy L., author; Neilson, James R., author; Scanlon, David O., author; Sambur, Justin B., author
Transition metal oxide Wadsley-Roth (W-R) crystallographic shear compounds are promising alternatives to graphite for high-rate Li-ion battery applications, as fast charging can drive unsafe lithium metal plating on graphite anodes when Li+ ions deposit as metallic lithium rather than intercalating into the graphite lattice. Despite this promise, fundamental materials chemistry questions remain regarding how to tune W-R structure and composition to achieve desirable electrochemical properties such as lower working potential, enhanced capacity, and improved cycle stability. Our work is motivated by two central questions: (1) how transition-metal substitution and site occupancy modifies the electrochemically active density of states (DOS) that governs multi-electron redox and the working potential; and (2) how variations in the propensity for second-order Jahn–Teller (SOJT) distortions of transition-metal octahedra along crystallographic shear planes may influence structural stability during repeated cycling. To answer these questions, we systematically investigated a series of nearly phase pure MoxNb12W1-xO33 and defect-rich D-MoxNb12W1-xO33 samples, as evidenced by experimental and computational Raman spectroscopy, as well as X-ray diffraction and Rietveld refinement analyses. Galvanostatic cycling and differential capacity measurements revealed that Mo substitution for W alters the electrochemically active DOS and activates multi-electron redox. Mo substitution introduces new electrochemically active states at more positive potentials than the W-based compounds. Electronic structure calculations show that the states enabling multi-electron redox are highly sensitive to both the identity of the transition-metal dopant (W vs. Mo) and its crystallographic site; accordingly, we considered doping at the tetrahedral, block-center, and shear-plane sites, finding that multi-electron (Mo6+ → Mo4+) redox arises specifically from Mo occupying the edge-sharing octahedral sites along the shear planes. The defective samples generally exhibited higher capacities, likely due to the presence of Wadsley defects (e.g., intergrowth of W4Nb26O77 in a matrix of Nb12WO33) that further lower Li-ion binding energetics and alter Li-ion transport paths. Mo-rich samples exhibit greater capacity loss with additional cycling, possibly due to the inability of severely distorted Mo octahedra from “rocking” back and forth during lithiation/de-lithiation cycles. These findings are significant because they inform W-R material design strategies aimed at systematically increasing capacity and working potential via optimizing transition metal site occupancy in the structure.
Access status: Open Access ,
Journal of undergraduate research & scholarly excellence, 2025
(2025) Colorado State University. JUR Press, publisher
Access status: Open Access ,
Atmospheric Science newsletter, 2023
(2023) Tisdale, Sarah, editor; Maloney, Eric, editor; Colorado State University. Department of Atmospheric Science, publisher
Access status: Open Access ,
Atmospheric Science newsletter, 2024
(2024) Barosh, Theresa, editor; Maloney, Eric, editor; Tisdale, Sarah, editor; Colorado State University. Department of Atmospheric Science, publisher