Concentration and Size of Airborne Particles in Manufacturing Environments

Teixeira, Renilson Luiz; Rezende, Raphael Nogueira; Silva, José Reinaldo Moreira da; Paula, Luana Elís de Ramos e

doi:10.1590/1806-90882018000100008

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Airborne dust in the working environment is a health risk factor, e.g., in mining [ 1 ], wood and furniture [ 2 , 3 ], and construction industry, as well as in the welding and grinding [ 4 ] and biomass processing [ 5 ]. Half masks covering the nose, mouth, and chin are personal protective equipment against harmful physical and biological agents.…”

Section: Introductionmentioning

confidence: 99%

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

Nowacki

Łakomy

Marczak

2022

IJERPH

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Filtering half masks belong to the group of personal protective equipment in the work environment. They protect the respiratory tract but may hinder breath and suppress speech. The present work is focused on the attenuation of sound by the half masks known as “filtering facepieces”, FFPs, of various construction and filtration efficiency. Rather than study the perception of speech by humans, we used a generator of white noise and artificial speech to obtain objective characteristics of the attenuation. The generator speaker was either covered by an FFP or remained uncovered while a class 1 meter measured sound pressure levels in 1/3 octave bands with center frequencies 100–20 kHz at distances from 1 to 5 m from the speaker. All five FFPs suppressed acoustic waves from the octave bands with center frequencies of 1 kHz and higher, i.e., in the frequency range responsible for 80% of the perceived speech intelligibility, particularly in the 2 kHz-octave band. FFPs of higher filtration efficiency stronger attenuated the sound. Moreover, the FFPs changed the voice timbre because the attenuation depended on the wave frequency. The two combined factors can impede speech intelligibility.

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Section: Introductionmentioning

confidence: 99%

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

Nowacki

Łakomy

Marczak

2022

IJERPH

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Literature Review : Risk Factors Wood Dust Exposure on Workers Lung Status

Nikmah

2020

JKL

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Introduction: Health problems caused by environmental factors are still one of the main things to note. One of the dangers in the work environment is the presence of organic dust including wood dust. Organic dust flying in the air is able to interfere with the health of the workers through the respiratory tract. The resulting wood dust is at risk causing lung faal status disorders in workers. This article aims to explore risks factors for wood dust exposure to the status of lung faal in wood industry workers based on the previously performed research from published journals. Discussion: This research used a method of literature study with a comparative study approach. The selected research should be in appropriated with the topic and through the protocols that have been set to become secondary data. The results of data analysis indicated that almost all research use observational analytic types with cross sectional approaches. Wood dust that has entered through the respiratory tract worker is influenced by several variables. The most often used risk factors as a research variable are dust levels, age, use of PPE, and smoking habit. Conclusion: The research can be concluded that independent variables of selected research are less varied. The selected research variables already existed in previous research. Upcoming researchers are expected to be able display new variables that are suspected to affect the status of the lung Faal on wood industry workers.

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Concentration and Size of Airborne Particles in Manufacturing Environments

Cited by 2 publications

References 10 publications

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

Speech Impaired by Half Masks Used for the Respiratory Tract Protection

Literature Review : Risk Factors Wood Dust Exposure on Workers Lung Status

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