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UNB Scholar is an institutional repository initiative of UNB Libraries intended to collect, preserve, showcase, and promote the open access scholarly output of the UNB community. Use UNB Scholar to explore specific collections, or search all content in the repository. Material submitted to the repository will also be freely discoverable online through Google and other major search engines.
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Item type:Item, Plurilingual Pedagogies to Enhance Well-Being for Multilingual Learners in Middle School FSL Classrooms(Canadian Association of Second Language Teachers, 2026) Pelletier, VictoriaItem type:Item, Dynamic mechanical behavior of Laser Powder Bed fused near-beta Ti5553 alloy at elevated temperatures(University of New Brunswick, 2026-02) Moradi Dastjerdi, Elham; Asgari, HamedThe lack of study on the effect of elevated temperature on the dynamic response of LPBF-made Ti-5Al-5Mo-5V-3Cr (Ti5553) restricts its use in aerospace structures. Dynamic compression tests were performed at 298, 473, and 673 K using a Split Hopkinson Pressure Bar. At 298 K, the alloy exhibits high strength, reaching an ultimate compressive strength of ∼ 1200 MPa at 600 s −1, limited ductility (0.069), Increasing the temperature to 473 K reduces the strength to ∼ 1030 MPa at 1000 s −1 while increasing ductility (0.10). At 673 K, the strength further decreases to ∼ 840 MPa at 1900 s −1, whereas ductility increases significantly (0.20), resulting in a marked rise in toughness. Microstructural analysis shows that room-temperature deformation involves slip, grain fragmentation, and gradual texture transition. Higher temperature activates dynamic recovery and strengthens shear localization. At 673 K, grain flattening and partial discontinuous dynamic recrystallization appear, also, formation of well-defined adiabatic shear bands.Item type:Item, Predictive validity of the Hospital Frailty Risk Score on health service utilization among older adults in New Brunswick(University of New Brunswick, 2026-02) Al Alam, Jacques; McDonald, Ted; Magalhaes, SandraThe Hospital Frailty Risk Score (HFRS) is a claims-based frailty algorithm designed to identify older adults at risk of adverse outcomes, but its performance in the Canadian healthcare context remains understudied. This study evaluated the predictive validity of the HFRS for adverse health service outcomes among adults aged 65 years and over in New Brunswick using linked administrative data from 2014-2018. Three-year intervals were constructed with a two-year exposure period to calculate HFRS and a one-year follow-up to assess outcomes. Adjusted logistic regression models examined associations between frailty risk (low, medium, high) and cumulative acute length of stay, alternate level of care (ALC) stays, and mortality. Among 57,730 observations, a clear dose–response relationship was observed, with progressively higher odds of prolonged hospitalization, extended ALC stays, and mortality across frailty categories. This study demonstrates the predictive validity of the HFRS for longer-term hospital utilization and ALC outcomes, supporting its use for health system planning and resource allocation.Item type:Item, The effects of polycyclic aromatic hydrocarbons and crude oil exposure on thermal tolerance of larval and juvenile lumpfish (Cyclopterus lumpus)(University of New Brunswick, 2026-02) Ferron, Isabelle Anne; Speers-Roesch, Ben; Gilbert, MatthewPolycyclic aromatic hydrocarbons (PAH) in crude oil can impair fish heart function. Since the heart helps sustain increasing energy demand during warming, PAH-induced cardiac perturbations could impair warming tolerance. I investigated how acute (24 hr) sublethal PAH exposure (methylnaphthalene, naphthalene, phenanthrene) affects tolerance to acute warming in larval and juvenile lumpfish (Cyclopterus lumpus), a widespread cold-water fish. I measured critical thermal maximum (CTmax) in larvae, and maximum heart rate (fHmax) and cardiac thermal tolerance metrics in juveniles. Cardiac thermal tolerance of juveniles was resistant to relevant levels of naphthalene and phenanthrene (and crude oil), whereas higher methylnaphthalene concentrations reduced the temperatures of peak fHmax and cardiac arrhythmia. Surprisingly, higher phenanthrene concentration increased larval CTmax. While lumpfish thermal tolerance was relatively resistant to PAHs, higher PAH exposures increased moribundity of both life stages. My findings help us understand how lumpfish may respond to oil exposure and warming in a changing climate.Item type:Item, Understanding the impact and potential of safe consumption practices through the perspectives of people who use drugs, front-line workers, and providers: A qualitative inquiry about the future of harm reduction in New Brunswick(University of New Brunswick, 2026-02) Webster, Mary; Weissman, EricNew Brunswick lacks the harm reduction-based resources needed to combat growing substance use disorder rates and opioid-related deaths. This research investigates how people who use drugs (PWUD), front-line workers (FLW), and service-providers are impacted by limited provincial safe consumption approaches like safe injection sites. Autoethnographic interviews centre participant’s voices at the fore-front of this thesis to determine how their mental and physical well-being are impacted by current services. Interviews also investigate how participant’s needs could be better met, and how harm reduction resources are often hindered by public and structural stigma and discrimination. Interviews coded using reflexive thematic analysis show that interviewees experienced stigma, burnout, and trauma. PWUD felt stigmatized for their drug use, FLW felt stigmatized for working with PWUD, and providers faced discrimination for supporting safe consumption. Support for harm reduction exists, but the potential to fully embrace safe consumption remains tied to overcoming stigma and discrimination.
