Occupational Health and Industrial Hygiene Commons^™

In Vitro And In Vivo Toxicological Evaluation Of Emissions From The Fused Filament Fabrication Three-Dimensional Printing, Mariana T. Farcas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fused filament fabrication (FFF), a three-dimensional (3-D) printing process, is an emerging technology that has recently gained wide popularity among both consumers and manufacturers. As filament is heated to above its glass transition temperature in a 3-D printer, a portion may undergo thermal decompostion, which releases ultrafine particles (UFP) and volatile organic compounds (VOCs) with potential adverse respiratory health effects are released into the air. This study's central hypotheses is that emissions generated during 3-D printing are toxic and exposure to these emissions induces pulmonary and systemic adverse health effects. Considering that currently, limited understanding is available on the health …

Worker Health Inequities In Central America, Carlos Eduardo Siqueira

Gastón Institute Publications

No abstract provided.

Toward A More Perma(Nent) Conceptualization Of Worker Well-Being? A Cross-Cultural Study Of The Workplace Perma Profiler, William P. Jimenez, Xiaoxiao Hu, Rebecca Garden, Xiaofei Xie

Psychology Faculty Publications

We examined the factor structure of the recently developed worker well-being measure the Workplace PERMA Profiler and relationships between PERMA dimensions (i.e., positive emotions, engagement, positive relationships, meaning, accomplishment) and job performance (viz., task performance, organizational citizenship behaviors benefiting individuals and the organization at large). The measure exhibited metric (i.e., weak) invariance across samples of participants from the U.S. (N = 284) and China (N = 420). Additionally, for participants who responded to both the Workplace PERMA Profiler and the performance measures, there was a general pattern of positive PERMA–performance relationships across both …

An Investigation Into Employee Exposure To Environmental Tobacco Smoke Within Designated Smoking Areas In The Hospitality Industry, With An Analysis Of Legislative Compliance Of Said Designated Smoking Areas, Hannah Byrne

Masters

Background: Occupational exposure to environmental tobacco smoke (ETS) is still occurring in the hospitality industry and the instance of non-compliant smoking areas required investigation. A designated smoking area covered by a roof where more than 50% of the perimeter of that part is surrounded by one or more walls is deemed a non-compliant smoking area. This study aimed to gather evidence of non-compliances across Dublin, determine current employee exposure whilst also measuring PM2.5 concentrations within smoking areas as well as providing insight into possible immediate health effects of ETS exposure.

Methods: Seventy-five smoking areas (41 located in high, 27 in …

Mental Health Disorders Among Rohigya Refugees In Malaysia, Kushilpal Kaur Satwant Singh

Student Works (2020-2029)

Mental health disorders among refugees has been recognized as a major public health issue. However, to date, there is limited evidence on the prevalence of Mental health disorders among Rohingya refugees residing in transit countries such as Malaysia. This study aimed to examine the prevalence and associated factors of Major Depressive Disorder (MDD), generalized anxiety disorder (GAD) and post-traumatic stress disorder (PTSD) among Rohingya refugees in Malaysia. Adult Rohingya refugees residing in Selangor (n= 220) were randomly selected to participate in this cross-sectional study that was conducted from June to November 2019. Perceived social support, religious orientation, and food security …

Conceptualization Of College Students' Covid-19 Related Mask-Wearing Behaviors Using The Multi-Theory Model Of Health Behavior Change, Robert E. Davis, Manoj Sharma, Kayla E. Simon, Amanda H. Wilkerson

Health, Human Performance and Recreation Faculty Publications and Presentations

Background: Recommendations and policies, regarding the use of face coverings, have been instituted to control transmission of coronavirus disease 2019 (COVID-19). Understanding of psychosocial factors related to the use of face coverings within the context of COVID-19 is needed. This study aimed to conceptualize mask-wearing behavior among students using the Multi-theory Model (MTM) of behavior change.

Methods: In October 2020, students (n = 595) enrolled in a large public southeastern US university were recruited to participate in a cross-sectional survey, using a valid and reliable instrument. Univariate, bivariate, and multivariate techniques described mask-wearing behavior and differentiated theoretical drivers of mask-wearing …

How Effective Is The Filtration Of ‘Kn95’ Filtering Facepiece Respirators During The Covid-19 Pandemic?, Clothilde Brochot, Mohamed Nejib Saidi, Ali Bahloul

Études primaires

Objectives

The high demand of filtering facepiece respirators (FFRs) worldwide during the period of the COVID-19 pandemic has led to a critical situation for decision-makers regarding their supply. After authorizing the use of FFRs certified by other regions of the world, decision-makers in many countries have published alerts, particularly concerning the ‘KN95’ type.

Methods

This paper investigated the filtration performance of different FFRs using an experimental setup already employed during several studies on FFRs filtration performance. Its high-resolution measuring devices permit to determine filtration performance according to the normative criteria: the pressure drop and the filtration efficiency. Eight different FFRs …

Numerical Investigation Of The Earplug Contribution To The Low-Frequency Objective Occlusion Effect Induced By Bone-Conducted Stimulation, Kevin Carillo, Olivier Doutres, Franck Sgard

Études primaires

The use of earplugs is commonly associated with an increased perception of the bone-conducted part of one's own physiological noise. This phenomenon is referred to as occlusion effect and is most prominent at low frequencies. Several factors influence the occlusion effect, such as the ear anatomy; the bone-conducted stimulation; and the type of occlusion device and its fit, insertion depth, and material properties. The latter factor is of great interest to potentially reduce the occlusion effect of passive earplugs. This paper investigates the mechanism(s) of contribution of earplugs to the objective occlusion effect. A two-dimensional axi-symmetric finite element model of …

New Taxonomy For Assessing Manual Material Handlers’ Footstep Patterns, Jasmin Vallée-Marcotte, Antoine Muller, Xavier Robert-Lachaine, Véronique Fecteau, Denys Denis, André Plamondon, Philippe Corbeil

Études primaires

Current taxonomies for assessing foot strategies in manual material handling lack exhaustive classification of foot movements and foot positioning. They also fail to consider different instants of the task as checkpoints to relate foot strategies. The goal of the study was first to develop a new taxonomy to assess foot positions and motions considering those limitations. The second goal was to assess reliability and reproducibility using raw agreement percentages, Cohen's kappa, prevalence-adjusted, bias-adjusted kappa and Gwet's AC1. A filmed task consisted of transferring boxes from one pallet to another. Intra- and inter-rater reliability were assessed reviewing 23% and 10%, respectively, …

Simulation Of The Objective Occlusion Effect Induced By Bone-Conducted Stimulation Using A Three-Dimensional Finite-Element Model Of A Human Head, Huiyang Xu, Franck Sgard, Kévin Carillo, Éric Wagnac, Jacques De Guise

Études primaires

The occlusion effect (OE) refers to the phenomenon that more bone-conducted physiological sounds are transmitted into the earcanal when it is blocked and may cause discomfort on users of hearing protection devices. Models have been proposed to study the OE as they can help understand the physical mechanisms and can be used to evaluate the individual contribution on the OE of the factors that may affect it (i.e., occlusion device, ear anatomy, and stimulation). The existing finite element models developed to study the OE are limited by their truncated ear geometries. In order to progress in the understanding of the …

Assessing The Comfort Of Earplugs: Development And Validation Of The French Version Of The Coprod Questionnaire, Jonathan Terroir, Nellie Perrin, Pascal Wild, Olivier Doutres, Franck Sgard, Chantal Gauvin, Alessia Negrini

Études primaires

Earplugs are a common form of protection for workers exposed to hazardous noise levels. Their comfort directly impacts the effective protection by influencing their consistent and correct use. Nevertheless, comfort definition may vary according to the studies. Thus, a previous review of the literature has shown that to improve our understanding of perceived comfort and to reduce measurement variability, it is advisable to consider comfort through a multidimensional construct (physical, acoustical, functional and psychological). On this basis, the COPROD (COnfort des PROtections auDitives/COmfort of hearing PROtection Devices) questionnaire was developed. It is intended for people working in noisy environments. Nine …

Combined Puncture And Cutting Of Soft-Coated Fabrics By A Pointed Blade: Energy, Force, And Stress Failure Criteria, Ennouri Triki, Chantal Gauvin

Études primaires

Soft elastomer-coated fabrics are widely used in engineering and protective applications. Puncture cutting by sharp-tipped objects is one of the most common failure modes of protective gloves made of coated fabrics. In order to investigate the puncture-cutting process of soft elastomer-coated fabrics, we studied the mechanisms and mechanics of pointed-blade insertion into specimens cut out from four protective gloves. Experimental and analytical analyses showed that total energy and critical puncture-cutting force calculated analytically are both able to predict the puncture-cutting resistance of soft elastomer-coated fabrics measured experimentally. Total energy is obtained from the relationship between the puncture-cutting work and the …

Development And Characterization Of An Adaptable Aerosolized Methylene Diphenyl Diisocyanate Generation System, Simon Aubin, Loïc Wingert, Sébastien Gagné, Livain Breau, Jacques Lesage

Études primaires

Reactive semivolatile contaminants, such as isocyanates, can be particularly difficult to assess in occupational environments. While standard methods exist for isocyanates, there are still significant differences between the results they provide for various occupational environments or processes. This study presents the validation of a laboratory system for the generation of controlled atmospheres of isocyanates. A system consisting of different modules generated airborne methylene diphenyl diisocyanate (MDI) by nebulizing a solution into mixing and exposure chambers with control of flow rate, temperature, and relative humidity. Sampling was performed through an eight-port flow splitter that allowed only very slight within-test variability. MDI …

Effect Of Hearing And Head Protection On The Localization Of Tonal And Broadband Reverse Alarms, Chantal Laroche, Christian Giguère, Véronique Vaillancourt, Claudia Marleau, Marie-France Cadieux, Karina Laprise-Girard, Emily Gula, Véronique Carroll, Manuelle Bibeau, Hugues Nélisse

Études primaires

Objective

This study explored the effects of hearing protection devices (HPDs) and head protection on the ability of normal-hearing individuals to localize reverse alarms in background noise.

Background

Among factors potentially contributing to accidents involving heavy vehicles, reverse alarms can be difficult to localize in space, leading to errors in identifying the source of danger. Previous studies have shown that traditional tonal alarms are more difficult to localize than broadband alarms. In addition, HPDs and safety helmets may further impair localization.

Method

Standing in the middle of an array of eight loudspeakers, participants with and without HPDs (passive and level-dependent) …

Safety In The Quebec Construction Industry: An Overview Of And Possible Improvements In Hazardous Energy Control Using Lockout On Construction Sites By Electricians, Pipefitters, Refrigeration Mechanics And Construction Millwrights, Damien Burlet-Vienney, Yuvin Chinniah, Ayoub Nokra, Abdallah Ben Mosbah

Études primaires

Lack of proper energy control on construction sites leads to numerous worker fatalities every year. Energy control refers to the concept of lockout and other methods used in particular in North America. The aim of this exploratory research project was to achieve a better understanding of energy control practices in the Quebec construction industry for four trades: electricians, pipefitters, refrigeration mechanics and construction millwrights. For each trade, 10 or so semistructured interviews were conducted by means of an open-ended questionnaire, developed with reference to the current provincial regulatory requirements. The 95 experiences described by the 38 participants were compiled by …

Cold Storage Work And Cold Protective Gloves – A Review, Daena Charles

Theses

The rise of e-commerce and the increasing demand for online grocery shopping and delivery has prompted the growth of warehouse workers subjected to cold temperature working conditions. To ensure food safety and the preservation of inventory, majority of these e-grocery warehouses are cold storage with temperatures from 10°C to -23°C. Exposure to such cold working environments can have effects on the workers comfort, performance and health. As the demand for workers in cold temperature environments increases, it is important to understand how this environment affects the workers and the challenges it may present.

This review evaluates how working in cold …

Perceived Vulnerability To Covid-19 Infection From Event Attendance: Results From Louisiana, Usa, Two Weeks Preceding The National Emergency Declaration, Ran Li, Bingcheng Yang, Jerrod Penn, Bailey Houghtaling, Juan Chen, Witoon Prinyawiwatkul, Brian E. Roe, Danyi Qi

Faculty Publications

Background: Individual perceptions of personal and national threats posed by COVID-19 shaped initial response to the pandemic. The aim of this study was to investigate the changes in residents' awareness about COVID-19 and to characterize those who were more aware and responsive during the early stages of the pandemic in Louisiana.

Methods: In response to the mounting threat of COVID-19, we added questions to an ongoing food preference study held at Louisiana State University from March 3rd through March 12th, 2020. We asked how likely it was that the spread of the coronavirus will cause a national public health crisis …

Differences In Levels Of Prostate Specific Antigen And Insulin-Like Growth Factor 1 In Gstp1 Gene Polymorphism Among Workers, Nendyah Roestijawati, Yudhi Wibowo, Tri Lestari

National Journal of Occupational Health and Safety

Cadmium (Cd) is classified as a carcinogen in humans (IA). In addition to causing lung cancer, the incidence of prostate cancer due to Cd exposure based on epidemiological research has also increased. This study aims to identify the GSTP1 genotypic frequency distribution and its correlation with PSA and IGF-1 levels in Cd exposed and unexposed workers. The research design used was cross sectional in 23 exposed groups (weld workers) and 40 unexposed groups (office employees) with a total of 63 people. The measurement of PSA and IGF-1 levels was carried out using the ELISA method and identification of the GSTP1 …

Risk Analysis Of Job Stress Among Balinese Crew Of Cruise Ships, Made Adhyatma Prawira Natha Kusuma, Indri Hapsari Hapsari Susilowati

National Journal of Occupational Health and Safety

Job stress can appear in all fields of work. Job stress not only occurs from the environment at work but also can be caused by the psychological condition of the workers. Working on a cruise ship demands higher patience to serve the guests in various activities and handle complaints. Moreover, work on cruise ships causes the workers separated from their families for a long time period, which can increase their mental pressure. The aim of this research is to describe the job stress of workers at a cruise ship. This research was conducted in January-June 2017. In an attempt to …

Ability To Identify Occupational Health And Safety (Ohs) Hazards In Small Sized Enterprises Workers In Cimanggis District, Depok City, West Java, Samuel Peratenta Tarigan, Doni Hikmat Hikmat Ramdhan, Dion Zein Nuridzin, Fajar Nugraha, Heru Susetyo

National Journal of Occupational Health and Safety

Background: The high number of SMEs players in Depok has an impact on high employment. A large number of workers in SMEs that have not been maximized in applying safety and health aspects in the workplace has the risk of causing several problems such as minor injuries, ergonomic problems, old and insecure equipment, lack of workers' knowledge and poor work environment conditions. Objective: This study aims to assess the ability of workers to recognize OHS hazards in SMEs assisted by Cimanggis District Health Center, Depok City, West Java. Methods: This study used a cross-sectional design carried out on 36 SMEs …