University of Iowa

Residential proximity to intensive animal agriculture associates with increased prevalence of antimicrobial resistance in homes

BACKGROUND: Antimicrobial resistance (AMR), a global public health threat, affects rural communities disproportionately due to their unique regional exposures, including proximity to animal feeding operations (AFOs), a source of AMR genes. OBJECTIVE: We evaluated residential prox...

Competing methods of divergence time estimation recover diverse evolutionary timescales

Abstract Molecular clocks convert evolutionary distances into geological times to infer time-scaled phylogenies. Methods differ in terms of fossil calibration strategy (node versus tip) and whether they use molecular and/or morphological data, but their relative performance remai...

Metrology, Standards, and Mission: Synopsis of the 2026 Annual Meeting of the Council on Ionizing Radiation Measurements and Standards (CIRMS)

The Council on Ionizing Radiation Measurements and Standards (CIRMS) is an independent, non-profit council composed of experts from academia, government, and industry across all areas of ionizing radiation science and technology, providing leadership, focus, and coordinated actio...

Tribal nations’ flood exposure and the U.S. national flood insurance program

Tribal nations experience significant flood impacts, yet participation in the National Flood Insurance Program remains limited. We analyze flood events, claims, and 57 Tribal Hazard Mitigation Plans, and insights from a tribal representative, to identify disparities in insured re...

The silent pandemic: the overlooked toll of stroke compared to COVID-19

The COVID-19 pandemic will be remembered as one of the defining health crises of the modern era. The World Health Organization reported approximately 7 million deaths attributed to COVID-19 globall...

Pulmonary Proteomic Responses to Subacute 2,2′,5,5′-Tetrachlorobiphenyl-4-ol Exposure via a Subcutaneous Implant in Adolescent Female Rats

Hydroxylated polychlorinated biphenyls (OH-PCBs) are biologically active metabolites that may contribute to adverse respiratory outcomes, yet their effects on the developing lung remain poorly characterized. This study investigated the impact of 2,2′,5,5′-tetrachlorobiphenyl-4-ol...

Carboxypeptidase activity drives L,D-transpeptidase essentiality during vegetative growth and sporulation in Clostridioides difficile

ABSTRACT In most bacteria, peptidoglycan contains mainly 4-3 crosslinks formed by penicillin-binding proteins (PBPs). However, in the opportunistic pathogen Clostridioides difficile , 70% of the crosslinks are 3-3 crosslinks formed by L,D-transpeptidases (LDTs), and LDTs are esse...

Long-term legacy of parents’ secure base script knowledge: Cascading implications for family relationships and children’s positive development.

A large body of research implicates adults' attachment security, largely formed in their early experiences, as a key factor shaping their future romantic and parenting relationships. Family system theories suggest that the interparental relationship is key for other relationships...

The role of Gröbner bases in the study of extremal truncated moment problems

In a 2014 paper, R.E. Curto and S. Yoo proved that a moment matrix M ( 3 ) with specific harmonic polynomials as column relations admits a representing measure if and only if a condition at the level of moments holds. In this paper, we generalize the 2014 result to arbitrary mome...

Advances in 3D Bioprinting for Breast Cancer Modeling: Tumor Microenvironment, Metastasis, and Drug Screening

The tumor microenvironment (TME) is a complex and heterogeneous milieu encompassing biological and biochemical events and diverse physical, chemical, and mechanical interactions between tumor and stromal cells. This heterogeneity plays a pivotal role in regulating tumor progressi...

Impact of learning analytics-based personalized feedback: an experimental study on student behavior in a large introductory STEM course

Abstract This study examined the impact of learning analytics-based personalized feedback on student engagement behavior, learning outcomes, and perceptions of the feedback in a large introductory STEM course. Students were randomly assigned to either an experimental group, which...

Human Recreation and Fire History Shape Landscape Connectivity for an Endangered Forest Carnivore

ABSTRACT Habitat connectivity is critical for long‐term wildlife population persistence, yet the permeability of landscape features can vary with human activity and disturbance history. Characterizing landscape features influencing permeability is critical for landscape planning...

Oral biofilm and hygiene practices in older adult patients admitted to the intensive care unit: a cross-sectional study

Oral biofilm in critically-ill patients acts as a reservoir for respiratory pathogens; its associations in older adult ICU populations including non-intubated admissions remain poorly characterised. We quantified the prevalence and admission-level factors associated with unsatisf...

Forensic Listening: NourbeSe Philip’s Zong!, Caroline Bergvall’s Drift, and the Contemporary Long Poem

This essay argues that NourbeSe Philip’s Zong! and Caroline Bergvall’s Drift—two complex, multipart long poems written, performed, and published in the last decade—can be read as poetic essays on the topic of precarity. They function as essays because they set out to test general...

Evaluating Glanceable Multi-Device Family Health Tracking with Smartwatches and Home Displays

While ubiquitous computing research has explored diverse devices for personal health tracking, we know less about multi-device designs for family informatics, where health management is inherently collaborative. To understand how families adopt and perceive ubiquitous access to s...

Association of depressive symptoms with retinal layer thickness: insights from the population-based Beijing eye study 2011

The aim of this study is to investigate the association between depressive symptoms and retinal layer thickness in a population-based adult Chinese cohort. This population-based, cross-sectional study included 2127 eyes of 2127 participants of Beijing Eye Study 2011, free of any...

Interconnected soil properties modulate compound hurricane-dust events that impact the Americas

Abstract In 2024, several Atlantic tropical cyclones encountered trans-Atlantic African dust, altering weather, air quality, and deposition across the Americas. Using state-of-the-art Earth system modeling, this study highlights that interconnected basic (mineralogy, texture) and...

Occupational implications of fishing on oral health: A systematic review and meta-analysis

BACKGROUND: Fishermen face unique occupational hazards that may adversely affect oral health, yet this remains an understudied area. This systematic review and meta-analysis evaluated oral health outcomes among fishermen and identified occupation-specific risk factors. MATERIAL A...

Sol–Gel-Encapsulated Biofilms on Biochar Effectively Degrade PCBs and Extend Biodegradation Activity under Environmentally Relevant Conditions

Abstract Attaching aerobic, PCB-degrading cells to carbon-based sorbent materials prior to sediment application is a feasible approach for bioaugmenting contaminated sediments to improve remediation strategies. Furthermore, encapsulation of attached cells with a novel, tailored s...

Inverse limit method for generalized Bratteli diagrams and invariant measures

Generalized Bratteli diagrams with a countable set of vertices in every level are models for aperiodic Borel automorphisms. This paper is devoted to the description of all ergodic tail invariant probability measures on the path spaces of generalized Bratteli diagrams. Such measur...