Publications by authors named "T M O'Hara"
The triboelectric charging of granular material is a long-standing and poorly understood phenomenon, with numerous scientific and industrial applications ranging from volcanic lightning to pharmaceutical production. The most widely utilised apparatus for the study of such charging is the Faraday cup, however, existing analysis of the resulting measurements is often simplistic and fails to distinguish charging due to particle-particle interactions from charging occurring through other mechanisms. Here, we outline a modular approach for interpreting these measurements, enabling triboelectric phenomena to be explored in greater detail.
View Article and Find Full Text PDFArticle Synopsis
- The study analyzes how factors like location, age, diet, and metabolism affect the concentration of essential and non-essential elements in Steller sea lion pups from different Aleutian Islands rookeries.
- Differences in element concentrations, like higher mercury in one rookery and higher sulfur in another, were found, indicating locality impacts wildlife health.
- The research revealed strong interactions among elements in lanugo, suggesting that these relationships are important for understanding the health and metabolism of sea lion pups.
Article Synopsis
- The brooding brittle-star is a simultaneous hermaphrodite with a complex genetic structure, showing multiple divergent mitochondrial DNA lineages and high levels of inbreeding.
- Research using exon-capture and transcriptome data reveals that its nuclear genome contains various expressed components across distinct samples, indicating significant genetic diversity.
- The findings suggest that this brittle-star may be a hybrid polyploid organism with unique reproductive strategies, marking the first discovery of such a complex in the Echinodermata phylum.
Introduction: Recommendations for chaperone use during sensitive exams have been left mostly to individual institutions, despite a paucity of data providing guidance. The purpose of this study was to survey patients and medical providers on their attitudes toward chaperone use and explore factors that may influence these attitudes.
Materials And Methods: A survey was administered at a single tertiary military medical center to providers and patients across multiple specialties, and further sub-analysis of the data were completed.
Steller sea lions (SSL) are sentinels for monitoring environmental contaminants in remote areas of the Aleutian Islands, Alaska. Therefore, concentrations of several organochlorines (OCs) were measured in blood from 123 SSL pups sampled from 3 regions; the western Aleutian Islands (WAI), central Aleutian Islands (CAI), and the central Gulf of Alaska. Blood, blubber, and milk from 12 adult female SSL from WAI, CAI and southeast Alaska also were analyzed.
View Article and Find Full Text PDF