A5032725041- Thermoregulation and physiological responses
- Climate Change and Health Impacts
- Textile materials and evaluations
- Infrared Thermography in Medicine
- Exercise and Physiological Responses
- Building Energy and Comfort Optimization
- Ergonomics and Musculoskeletal Disorders
- Musculoskeletal pain and rehabilitation
- Cardiac Arrest and Resuscitation
- Thermal Regulation in Medicine
- Geological formations and processes
- Occupational Health and Performance
- Geology and Paleoclimatology Research
- Cardiovascular and exercise physiology
- Chemical Safety and Risk Management
- Bauxite Residue and Utilization
- Advanced Sensor and Energy Harvesting Materials
- Risk and Safety Analysis
- Hydrology and Watershed Management Studies
- Respiratory Support and Mechanisms
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Landslides and related hazards
- Occupational health in dentistry
- Fashion and Cultural Textiles
- Aeolian processes and effects
University of South Florida
2014-2025
Géosciences Rennes
2023
Université de Rennes
2023
Florida College
2002-2022
University of Liège
2022
IPM Institute of North America
2017
Fraunhofer Institute of Optronics, System Technologies and Image Exploitation
2015
University of New Mexico
2013
University of Tampa
2006
National Institute for Occupational Safety and Health
2002-2003
The wet bulb globe temperature (WBGT) is the de facto standard to assess environmental contributions heat stress. A practical problem emerges when stress conditions vary over many locations or during day. To address this problem, investigators have suggested empirical relationships and thermodynamic models. purpose of effort was examine a model in laboratory predict WBGTs an aluminum smelter by both In laboratory, there no real difference between experimental data model. application smelter,...
Abstract Objective Describe the relation between clinic visits for symptoms of heat-related illness (Heat-Related Visits, HRV) and ambient Heat Index among aluminium smelters in Arab Gulf States. Methods Four provided HRV data. Meteorological data from nearby airports (HI). Three approaches to finding a smelter-specific trigger heat stress management were examined. Results The rate ratios Poisson regressions 1.2/°C one smelter, 1.1/°C two others 0.96 (not significant) fourth; all showed no...
Worker heat-stress exposures can be controlled for short periods above the threshold limit value (TLV®) by self-assessment, if worker avoid overexposure based on excessive heart rate and/or core temperature. A socially acceptable surrogate temperature and a measure of are objective measures that increase reliability self-assessment decision. This article describes surface-mounted sensor developed to indicate when rectal reaches safe limit. Protective criteria were established alert limits....
Threshold limit values for heat stress and strain are based on an upper wet bulb globe temperature (WBGT) ordinary work clothes, with clothing adjustment factors (CAF) other ensembles. The purpose of this study was to determine the CAF four ensembles (Cotton Coveralls, Tyvek® 1424 NexGen® Tychem QC® Coveralls) against a baseline cotton clothes what effect relative humidity may have. A climatic chamber used slowly increase level by increasing air at three levels (20%, 50%, 70%). Study...
Background The Deepwater Horizon disaster cleanup effort provided an opportunity to examine the effects of ambient thermal conditions on exertional heat illness (EHI) and acute injury (AI). Methods outcomes were daily person‐based frequencies EHI AI. Exposures maximum estimated WBGT (WBGTmax) severity. Previous day's cumulative effect was assessed by introducing previous WBGTmax into model. Results AI higher in workers exposed above a 20°C (RR 1.40 RR 1.06/°C, respectively). 28°C‐WBGTmax day...
Abstract This study measured the clothing adjustment factors (CAFs) for four ensembles (Cotton Coveralls, Tyvek 1427 NexGen and Tychem QC Coveralls; all coveralls were worn without hoods) against a baseline of cotton work clothes to determine whether CAFs would be affected by metabolic rate. Fifteen participants wore one five while walking on treadmill at low, moderate, high rates in an environment maintained 50% relative humidity. A climatic chamber was used slowly increase level heat...
To assess the influence of occupational exposures on risk site-specific radiographic osteoarthritis (OA) knee, hand, foot, and cervical spine.Using a cross-sectional design, data collected from men women aged 40 years older participating in Clearwater Osteoarthritis Study were analyzed (n = 3436). Subjects' queried using study intake form, including stair climbing, standing rigid surface, squatting, jolting. Physical examinations radiographs spine conducted. The Kellgren Lawrence ordinal...
Ambient temperature and relative humidity are readily ava-ilable thus tempting metrics for heat stress assessment. Two methods of using air to create an index Heat Index Adjusted Temperature. The purposes this article are: (1) examine how well Temperature estimated the wet bulb globe (WBGT) index, (2) suggest can be used screen level. Psychrometric relationships were estimate values actual WBGT conditions temperature, humidity, radiant at speed 0.5 m/s. A relationship between [°F] [°C] was...
A common metric of assessing the evaporative cooling potential protective clothing is to assess rate diffusion water vapour through fabric. Another mechanism that supports convective transfer. Prototype porous coveralls were constructed promote air flow with 0.0024 mm (0.06 inch) holes representing nominal openings 0, 1, 2, 5, 10 and 20% garment surface area (called P00, P01, P02, P05, P10 P20). The purpose this study was evaluate ability these coverall configurations support cooling....
The wet bulb globe temperature index (WBGT) is a common method to assess the environmental contribution heat stress as part of an occupational exposure assessment. two purposes this study were (1) compare empirical relationships some meteorological conditions WBGT, and (2) evaluate smaller alternative natural using relative humidity sensor. Data collected in six West-central Florida locations over multiple days for total 14 measurement days. Multiple linear regression was used explore...
On-demand organic hypochlorites for the neutralization of sulfur-based chemical warfare simulants.
ABSTRACTIn a series of three companion papers published in this Journal, we identify and validate the available thermal stress indicators (TSIs). In second paper series, identified criteria to consider when adopting TSI protect individuals who work heat, weighed their relative importance using Delphi exercise with 20 experts. Two iterations were adequate reach consensus within expert panel (Cronbach's α = 0.86) for set 17 varying weights that should be considered heat. These physiological...
Acclimation in a hot environment is one potent means to decrease the heat strain of work environment. However, with diminished exposure, positive adaptations acclimation may be lost. This rate loss equivocal and, once established, could used prescribe time for re-acclimation. The purpose this study was determine over period 6 weeks and needed re-acclimation after 2 4 de-acclimation ten healthy participants. All participants first underwent an initial (a 3-day plateau Tre signify...
Studies of worker heat stress and strain in aluminum smelters have found that exposure likely to exceed the American Conference Governmental Industrial Hygienists' threshold limit value (TLV®) dose-response relationship between was weak. A model based on climatic data a task analysis indicated exposures excess TLV during July/August study period. To impact working above TLV, (i.e., oral temperature, recovery heart rate, average rate) were collected. Recovery rates high most time,...
Most heat stress exposure assessments based on wet bulb globe temperature (WBGT) consider the environmental conditions, metabolic demands, and clothing requirements, limit is for extended work periods (e.g., a typical workday). The U.S. Navy physiological (PHEL) curves rational models of also time as job risk factor so that there limiting exposures above conventional WBGT limit. PHEL charts have not been examined different require personal computers. current study role in short-term (time...
Heat stress exposure limits based on wet-bulb globe temperature (WBGT) were designed to limit exposures those that could be sustained for an 8-h day using limited data from Lind in the 1960s. In general, Sustainable are heat levels at which thermal equilibrium can achieved, and Unsustainable occur when there is a steady increase core temperature. This paper addresses ability of ACGIH® Threshold Limit Value (TLV®) differentiate between exposures, propose alternative occupational limits, ask...
The fabrics associated with protective clothing affect heat stress, which influences productivity and risks of heat-related disorders. This study compared the work limiting effects five coveralls a semiclothed condition (t-shirt shorts). Two fabric characteristics determined from bench tests, moisture vapor transmission rate (MVTR), air permeability were also examined as possible predictors ensemble performance. A progressive metabolic protocol was used where environmentalconditions (T(db) =...