scholarly journals What Factors Underlie Attitudes Regarding Protective Mask Use during the COVID-19 Pandemic?

Author(s):  
Stephanie R. Mallinas ◽  
Jon K. Maner ◽  
E. Ashby Plant
Keyword(s):  
1991 ◽  
Author(s):  
John K. Crosley ◽  
Clarence E. Rash ◽  
Richard R. Levine

2021 ◽  
Vol 166 ◽  
pp. 112232
Author(s):  
Hugo Gallo Neto ◽  
Carla Gomes Bantel ◽  
John Browning ◽  
Natalia Della Fina ◽  
Tami Albuquerque Ballabio ◽  
...  

AIHAJ ◽  
1987 ◽  
Vol 48 (7) ◽  
pp. 639-645 ◽  
Author(s):  
R. NIELSEN ◽  
A.R. GWOSDOW ◽  
L.G. BERGLUND ◽  
A.B. DuBOIS

2013 ◽  
Vol 28 (1) ◽  
pp. 102-107
Author(s):  
Dusan Rajic ◽  
Negovan Ivankovic ◽  
Natasa Ivankovic ◽  
Marina Ilic ◽  
Zeljko Senic ◽  
...  

The use of ammunition primed with depleted uranium is one of the hallmarks of modern combat operations, resulting in environmental contamination by particles of depleted uranium and uranium oxide, scattered around in the form of submicron-scale aerosols. This paper examined the protective effectiveness of the Serbian military's M3 protective face mask in relation to the presence of airborne depleted uranium and its by-products. Sodium chloride in solid aerosol form was used as a test substance and adequate physical simulator of such radioactive aerosols because its granulometric (particle) size distribution met the requirements of suitability as a simulator. Determination of aerosol concentration was carried out by flame photometry method, whilst granulometric distribution was determined by an electric particles analyzer. It was established that the total internal leakage of the M3 protective mask was as much a function of the penetration of particles through the combined M3 filter as of the leaks along the fitting line of the user's face mask and the inhalation valve. In terms of its protective effect against aerosols of depleted uranium and associated oxides, the Serbian M3 protective mask was determined to be of high efficiency and physiological suitability.


2022 ◽  
Vol 9 ◽  
Author(s):  
Banan Hudaib ◽  
Ali F. Al-shawabkeh ◽  
Fadia Hudaib

Background and Objectives: On March 11, the World Health Organization stated coronavirus disease 2019 (COVID-19) was a global pandemic; the rapid and extended spread of the COVID-19 pandemic has become a significant cause of concern for face-to-face university study. This study investigated the knowledge and awareness of chemical engineering students in Al-Balqa Applied University (BAU) in Jordan about respiratory protective measures against COVID-19.Materials and Methods: A cross-sectional study was developed using a multi-stage random sampling technique conducted from April 21–28, 2020. The data were collected through an online questionnaire distributed to BAU's chemical engineering students, with 179 responders completed the survey correctly. The data were analyzed statistically using the SPSS program. The questionnaire consisted of two parts: the first measured the student's general knowledge about the COVID-19 pandemic, while the second focused on the respiratory protection methods against COVID-19; it was structured to assess the student's knowledge about the suitable types of masks and respirators used in COVID-19 prevention, their detailed mechanism of action and filtration process type, their production materials, and finally how the student's knowledge affects choosing a proper preventive method.Results: The study found moderate awareness among engineering students about COVID-19 causative agent, effective preventive masks/respirators used, and the mask's viral blockage mechanisms. A total of 89 respondents (49.7%) pointed to the correct best protective mask, i.e., N95 mask. On the other hand, 119 respondents (66.5%) believed that a surgical mask is the best protective mask. The study also showed differences in knowledge between different academic years; the knowledge about respirators, masks, and their action mechanism among senior students in the last three academic years was better than the younger students with a P-value of 0.047 for knowledge about respirator used for protection against coronavirus disease and the P-value of 0.028 for knowledge of the comparisons between the N95 and surgical mask. On the other hand, the study showed a lack of awareness of the most suitable mask types used in pandemics and the appropriate use method.Conclusions: The study found that chemical engineering students in Al-Balqa university were moderately knowledgeable regarding COVID-19 respiratory preventive methods; these results provided an overview of each student's community's knowledge level. Therefore, efforts are needed to improve public awareness through comprehensive educational campaigns to increase students' knowledge, attitude, and practice.


1995 ◽  
Vol 43 (6) ◽  
pp. 780-786
Author(s):  
Rade Biočanin ◽  
Dragan Nikolić
Keyword(s):  

Author(s):  
Sehchang Hah

The objective of this experiment was to quantify and localize the effects of wearing the nuclear, biological, and chemical (NBC) M40 protective mask and hood on speech production and perception. A designated speaker's vocalizations of 192 monosyllables while wearing an M40 mask with hood were digitized and used as speech stimuli. Another set of speech stimuli was produced by recording the same individual's vocalizing the same monosyllables without the mask and hood. Participants listened to one set of stimuli during two sessions, one session while wearing an M40 mask with hood and another session without the mask and hood. The results showed that wearing the mask with hood gave most detrimental effects on the sustention dimension acoustically for both speech perception and production. The results also showed that wearing it was detrimental on vocalizing and listening to fricatives and unvoiced-stops. These results may be due to the muffling effect of the voicemitter in speech production and the filtering effects of the voicemitter and the hood material on high frequency components during both speech production and perception. This information will be useful for designing better masks and hoods. This methodology also can be used to evaluate other speech communication systems.


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