A5004779701- Heavy Metal Exposure and Toxicity
- Arsenic contamination and mitigation
- X-ray Spectroscopy and Fluorescence Analysis
- Heavy metals in environment
- Infection Control and Ventilation
- Trace Elements in Health
- Aerosol Filtration and Electrostatic Precipitation
- Recycling and utilization of industrial and municipal waste in materials production
- Indoor Air Quality and Microbial Exposure
- Metal Extraction and Bioleaching
- Dental Research and COVID-19
- Building materials and conservation
- Acne and Rosacea Treatments and Effects
- Chromium effects and bioremediation
- Iron and Steelmaking Processes
- Metallurgical Processes and Thermodynamics
- Electrospun Nanofibers in Biomedical Applications
- Geological and Geochemical Analysis
- Lattice Boltzmann Simulation Studies
Dalhousie University
2020-2024
Filtering facepiece respirators (FFRs) protect wearers from inhalation of fine particulates and help prevent transmission airborne viruses. Here, an FFR material is produced by successive deposition contact drawn poly(ethylene oxide) (PEO) fibers. Fibers are formed immersing array pins in a highly viscous precursor solution PEO then rapidly removing the such that polymer entanglement occurs, forming multiple liquid bridges dry as they extend. Tunable filtration achieved varying number fiber...
Arsenic is a toxic metalloid which has been associated with wide range of health effects in humans including skin abnormalities and an elevated risk skin, bladder, kidney, lung cancer, diabetes, cardiovascular disease. The measurement arsenic concentration nail clippings often used population studies as indicator exposure. Portable X-ray fluorescence (XRF) emerging technique for measuring clippings. In the current study, single toenail from 60 Atlantic Canadian participants were assessed...
Zinc is an essential trace element in humans. deficiency can result a range of serious medical conditions which include effects on growth and development, the immune system, central nervous gastrointestinal system. Diagnosis zinc often precluded by lack noninvasive reliable biomarker. concentration nail considered emerging biomarker status Whether accurately reflects beyond scope current study, but important research question. The development portable method to quickly assess from single...
The coronavirus (SARS-CoV-2) has prompted a global need and shortage of face masks respirators. Electrospinning polystyrene cellulose nanocrystals (CNCs) is used to fabricate filter materials exceeding N95 standards set by the National Institute for Occupational Health Safety. desired filtration efficiency pressure drop are achieved from filters with varying amounts input material. water contact angle, fiber morphology, surface potential reported explain enhancements in performance after...
Chronic exposure to inorganic arsenic and trace metals has been linked prostate cancer, altered methylation capacity may have an important role in carcinogenesis. Biomarkers be able elucidate this role. Our objectives were characterize profiles of species metallome toenails urine samples, compare between cancer cases controls, determine the discriminant ability toenail biomarkers. Toenail samples ( n = 576), 152), questionnaire data sourced from Atlantic Partnership for Tomorrow's Health...
Introduction Chronic exposure to arsenic through drinking water has been linked several cancers. The metabolism of is thought play a key role in arsenic-related carcinogenesis as metabolites varying toxicity are produced and either stored or excreted from the body. Atlantic Canada highest age-standardized incidence rates all cancers country. This may be due its high levels environmental prevalence unregulated private wells for consumption. Here, we aimed characterize profiles species...
Zinc and selenium are essential minerals for human nutrition. Reliable biomarkers of zinc status in humans therefore important. This work investigates a novel portable X-ray fluorescence (XRF) method with the ability to rapidly assess nail clippings. approach used mono-energetic beam excite characteristic X-rays from Nail clippings were obtained Mother Infant Nutrition Investigation (MINI), study designed nutrition population women their breastfed children New Zealand. Twenty mother-infant...
ConspectusThe development of a highly effective, low-cost method for protection against direct transmission through infectious media associated with respiratory diseases has been considered to be major challenge in the management pandemic outbreak. Currently, filtration respirators and masks depends on mesh size, raising safety concerns about contact virus-laden layers during use disposal. Also, conventional medical face are recommended single only because long-term reuse increase risk...
Long-term exposure to environmental arsenic has been associated with many chronic diseases, including several cancers, and diabetes. Urinary studies have implicated speciation as an important risk factor, however, such associations not replicated using toenail samples: a relatively new biosample for estimating long-term internal dose-exposure arsenic. Despite having advantages over conventional biosamples ease of collection storage, standard methods analysis in toenails yet established. The...
Chronic exposure to environmental arsenic has been linked a number of human diseases affecting multiple organ systems, including cancer. The greatest concern for chronic is contaminated groundwater used drinking as it the main contributor amount present in body. An estimated 40% households Nova Scotia (Canada) use water from private wells, and there that may be to/associated with In this preliminary study, we are aiming gain insights into association metal's pathogenicity carcinogenicity...