Publications by authors named "J E Bergmann"

Article Synopsis
  • Friction stir welding (FSW) joins metals using a rotating tool that softens and stirs base metal, but the bobbin tool (BTFSW) creates significant tensile stresses on both sides of the weld due to its unique design with two shoulders.
  • To counteract the tensile stresses, laser shock peening (LSP) is introduced as a post-processing technique, successfully converting residual stresses from tensile to compressive while enhancing microhardness up to 780 µm deep, depending on energy levels used.
  • While increased compressive stresses and microhardness improve fatigue resistance, the resulting rise in surface roughness can negatively impact the overall performance, indicating a trade-off in the LSP treatment's
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The poplar moth, (Lepidoptera: Lyonetiidae), is widely distributed across Europe, Asia, and parts of Africa. It was first identified in Chile in 2015 and has since become a significant pest in the agricultural sector. Additionally, economic losses are further aggravated by the presence of pupae in nearby fruit orchards.

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Female individuals who are post-menopausal present with higher incidence of knee osteoarthritis (KOA) than male counterparts; however, the mechanisms underlying this disparity are unknown. The most commonly used preclinical models lack human-relevant menopausal phenotypes, which may contribute to our incomplete understanding of sex-specific differences in KOA pathogenesis. Here we chemically induced menopause in middle-aged (14-16 months) C57/BL6N female mice.

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Study Objectives: Home sleep apnea testing based on peripheral arterial tonometry (P-HSAT) is increasingly being deployed because of its ability to test for multiple nights. However, P-HSATs do not have access to modalities such as airflow and cortical arousals and instead rely on alternative sources of information to detect respiratory events. This results in an a-priori performance disadvantage.

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Trait-based approaches have been increasingly used to relate plants to soil microbial communities. Using the recently described root economics space as an approach to explain the structure of soil-borne fungal communities, our study in a grassland diversity experiment reveals distinct root trait strategies at the plant community level. In addition to significant effects of plant species richness, we show that the collaboration and conservation gradient are strong drivers of the composition of the different guilds of soil fungi.

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