Publications by authors named "A S MacDonald"

Background: Emergency appendicectomy (EA) is a common procedure, yet few studies have focused on gender differences in these patients. This study aims to evaluate the demographics, preoperative investigations, intraoperative findings, and clinical outcomes between males and females undergoing EA.

Methods: A multicenter retrospective observational study was conducted across four hospitals involving patients who underwent EA between August 2018 and November 2025.

View Article and Find Full Text PDF

Ectothermic arthropods, like ticks, are sensitive indicators of environmental changes, and their seasonality plays a critical role in tick-borne disease dynamics in a warming world. Juvenile tick phenology, which influences pathogen transmission, may vary across climates, with longer tick seasons in cooler climates potentially amplifying transmission. However, assessing juvenile tick phenology is challenging in climates where desiccation pressures reduce the time ticks spend seeking blood meals.

View Article and Find Full Text PDF

The topological magnetoelectric effect (TME) is a defining property of three-dimensional Z_{2} topological insulators that was predicted on theoretical grounds more than a decade ago, but has still not been directly measured. In this Letter we propose a strategy for direct measurement of the TME and discuss the precision of the effect in real devices with charge and spin disorder.

View Article and Find Full Text PDF

Background: Physicians' refusal to perform medical procedures that they deem contrary to their conscience may threaten basic human rights and public health. This study aims to investigate the thoughts and attitudes of future physicians on conscientious objection (CO) and thus contribute to the discussions from a country more heavily influenced by Eastern values.

Methods: A cross-sectional multi-center study was conducted among medical students country-wide, where 2,188 medical students participated via an online survey.

View Article and Find Full Text PDF

Background: Maternal exposure to per- and polyfluoroalkyl substances (PFAS) has been linked to child neurodevelopmental difficulties. Neuroimaging research has linked these neurodevelopmental difficulties to white matter microstructure alterations, but the effects of PFAS on children's white matter microstructure remains unclear. We investigated associations between maternal blood concentrations of six common perfluoroalkyl sulfonates and white matter alterations in young children using longitudinal neuroimaging data.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: controllers/Author.php

Line Number: 219

Backtrace:

File: /var/www/html/application/controllers/Author.php
Line: 219
Function: _error_handler

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: libraries/Pagination.php

Line Number: 413

Backtrace:

File: /var/www/html/application/controllers/Author.php
Line: 274
Function: create_links

File: /var/www/html/index.php
Line: 316
Function: require_once