Background: Unsafe work behavior, such as not wearing PPE, not following work procedures and work safety regulations, and not working carefully is an action that caused 88% of work accidents. The rate of occurrence of minor work accidents in hospitals is 20% higher than workers in other industries. Purpose: To prove that there was a correlation between knowledge of OSH as well as safety awareness and unsafe action on nurses in Hospital X. Method: This study used an observational analytic method with a cross-sectional approach. The research sample was 88 respondents, and it was taken by using the total sampling technique. The research instrument used was a valid and reliable questionnaire. Data analysis used Somer's d test for bivariate data processing and the Ordinal Logistics Regression test. Result: The results of the Somer's d test for correlation between the knowledge of OSH and unsafe action resulted in p-value 0.00, while the results of the Somer's d test for correlation between safety awareness and unsafe action resulted in p-value 0.000. Furthermore, the Ordinal Logistics Regression test that was carried out with the independent variable in the study that had a greater effect on unsafe action was safety awareness with a wald value of 15.001. The results of the Nagelkerke R-square were 0.482 (48.2%), hence the independent variables could explain the dependent variable by 48.2%. Conclusion: The result of this study showed that there was a significant correlation between the knowledge of occupational health and safety awareness with unsafe action.
The porous characteristics of recycled natural fibres make them suitable for use as acoustic materials. Straw and water hyacinth fibres are natural materials that can potentially be used as composites in damping devices. This study evaluated the acoustic performance of two types of reinforced composites containing natural fibers (water hyacinth and rice straw) and gypsum adhesives in reducing stress levels in the textile industry. The evaluation was carried out through laboratory tests using impedance tubes and direct testing in a textile factory to reduce the stress level of production machine workers and operators. Rice straw and water hyacinth fibres were thoroughly mixed in proven mass ratios of 10% and 30% with water and gypsum plaster as a binder. The mixture was pressed into a mould at a pressure of 3 MPa before being heated in an oven at 900ºC for 5 hours. Perforations measuring 4 to 8 mm in diameter were then made at equal distances on the panels. Acoustic panel performance tests were carried out with impedance tubes according to ISO 10534-2 standards at sound frequencies ranging from 0 to 6400 Hz. Field tests were also conducted at a textile factory, with each machine unit generating a sound source of 100 to 110 dB. Heart rate data was collected, and noise measurements were carried out before and after the panels were installed in the area around the operating machines. The results showed that the rice straw-gypsum composite with four perforations performed the best, achieving an α coefficient of 1.0 at a frequency of 1500 Hz and an NRC of 0.50, indicating effective noise reduction. The installation of acoustic panels around the noise source in the textile industry reduced noise levels by up to 9.8 dB and was found to affect workers' heart rates, indicating reduced stress levels. The questionnaire results also showed a significant effect on the stress levels of workers. The use of natural fibers in composite materials has the potential to be an eco-friendly and sustainable solution for soundproofing applications. Doi: 10.28991/CEJ-2023-09-06-02 Full Text: PDF
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