scholarly journals Mechanical load caused by physical activity by wearing military equipment

2021 ◽  
Vol 9 (1) ◽  
pp. 387-399
Author(s):  
Tomislav Babić ◽  
Marko Kršulja ◽  
Maja Šupuković
Keyword(s):  
Physical Activity ◽  
Field Test ◽  
Occupational Safety ◽  
Mechanical Load ◽  
Work Load ◽  
Health Law ◽  
Work Skills ◽  
Military Equipment ◽  
Safety And Health ◽  
Ergometry Test

In this paper fatigue for professional soldier caused by active physical activity and endurance limits is investigated. The resulting workload is one of indicators of how training, preparedness and other acquired work skills can contribute to the human body being a large working “machine”. Ergometry test was conducted and field test for soldier fitness condition and energy expenditure was measured regarding the level of body’s metabolism. Field test consisted of three runs on a polygon of 10 km and different workloads, the energy consumption was monitored. Work load was compared with Occupational Safety and Health law acts. The results showed difference in workload conditions and hart rate which allowed to determine rest spots and safety in training conditions.

Working conditions in selected hospital rooms: results of a pilot study on noise, illumination and microclimate

2018 ◽  
Vol 567 (12) ◽  
pp. 17-21
Author(s):  
Bożena Smagowska ◽  
Dariusz Pleban ◽  
Andrzej Sobolewski ◽  
Andrzej Pawlak
Keyword(s):  
Physical Activity ◽  
Pilot Study ◽  
Work Environment ◽  
Operating Room ◽  
Working Conditions ◽  
Occupational Safety ◽  
Measurement Methods ◽  
Occupational Safety And Health ◽  
Physical Factors ◽  
Safety And Health

The article presents an assessment of three physical factors of the work environment, i.e. noise, illumination and microclimate in selected rooms of a hospital. The rooms were selected in cooperation with occupational safety and health services. Quantities characterizing noise, illumination and microclimate were measured in the operating room and in the sterilization and pathomorphology rooms. For this purpose, the measurement methods included in the standards were applied. The pilot study showed that noise limits were exceeded in terms of annoyance and that there is a need to improve illumination in the operating room, in the sterilization room and in the histological laboratory. In the operating and in the sterilization rooms, the requirement of thermal comfort was met with the assumption of low physical activity of employees, while in the pathomorphology room, changes are necessary.

Survival of Mycobacteria on N95 Personal Respirators

1999 ◽  
Vol 20 (4) ◽  
pp. 237-241 ◽  
Author(s):  
Tiina A. Reponen ◽  
Zheng Wang ◽  
Klaus Willeke ◽  
Sergey A. Grinshpun
Keyword(s):  
Occupational Safety ◽  
Work Load ◽  
Human Saliva ◽  
Growth Potential ◽  
Breathing Rate ◽  
Bacterial Survival ◽  
Nutritional Conditions ◽  
Safety And Health ◽  
Subsequent Storage ◽  
N95 Respirators

AbstractObjectives:The overall aim of this study was to investigate the survival and possible growth of Mycobacterium tuberculosis simulant bacteria on respirator filters.Methods:Mycobacterium smegmatis was used as a biochemical simulant for M tuberculosis. Bacterial survival was tested on National Institute for Occupational Safety and Health-certified N95 respirators from three manufacturers. The first experiments simulated one-time respirator use and subsequent storage for 1 to 9 days under ideal conditions for the growth of mycobacteria: 37°C and 85% relative humidity. The bacteria were loaded on the respirator filters under three different nutritional conditions: in the absence of nutrients; in the presence of human saliva (simulating conditions when the respirator is worn); and in the presence of nutrient broth (for ideal growth potential). The subsequent experiments simulated respirator wear for 2 hours under medium workload conditions at a breathing rate of 56 L/min.Results:It was found that M smegmatis did not grow on the tested respirators, even when the respirators were stored at temperature, humidity, and nutrition conditions most favorable for microbial growth. However, these bacteria could survive on respirators for up to 3 days during storage. The culturability of M smegmatis was not affected by airflow that simulated the breathing rate associated with medium work-load conditions for 2 hours.Conclusions:This study shows that M tuberculosis surrogate bacteria collected on a respirator are not able to grow and are able to survive only in ideal (ie, not clinically relevant) conditions. Based on these experiments, we conclude that M tuberculosis is unlikely ever to become an infectious problem in the air again, once it is removed by a respirator.

Occupational Safety and Health Law.

ILR Review ◽  
1985 ◽  
Vol 39 (1) ◽  
pp. 139
Author(s):  
Roger B. Jacobs ◽  
Mark A. Rothstein
Keyword(s):  
Occupational Safety ◽  
Occupational Safety And Health ◽  
Health Law ◽  
Safety And Health
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