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All Journal International Journal of Health and Pharmaceutical (IJHP) Journal of Fibers and Polymer Composites
Retno Setyowati, Ety
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Materials Science & Nanotechnology Nursing Public Health

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Exploring the Impact of Sound Dampening Materials on Maritime Workers' Knowledge and Attitudes Towards Noise-Induced Hearing Loss: A Literature Review Muhammad Zaidan Fadhlurrahman Rivlan; Yudhanto, Didit; Retno Setyowati, Ety; Herlina Sari, Nasmi
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.206

Abstract

Effective mitigation strategies are necessary because high noise levels in maritime work situations frequently represent serious threats to hearing health. Acoustic panels and sound absorbers are examples of sound-dampening materials that are used to lower noise levels; nevertheless, it is unclear how these materials affect employees' awareness and attitudes. The purpose of this study is to investigate how the usage of sound-absorbing materials affects the attitudes and understanding of marine personnel about noise-induced hearing loss (NIHL). The study also covers ship personnel' attitudes toward NIHLs, their understanding of NIHLs, and their hazards. The strategies for increasing ship employees' understanding of and attitudes toward NIHL, the impact of sound-dampening materials on their knowledge and attitudes toward NIHL, and the effectiveness of NIHL awareness and training programs are also covered. While the majority of marine workers are knowledgeable that noise can lead to hearing loss, the review's findings show that their understanding of the causes and long-term consequences of NIHL is insufficient. Diverse perspectives exist regarding prevention, and several employees find it awkward to wear hearing protection. Sound-absorbing materials facilitate better communication and teamwork among employees, which can raise satisfaction at work and safety awareness while lessening the disruption caused by excessive noise. Moreover, employing hearing protection devices (HPPs) can raise staff members' awareness of NIHL and motivate them to utilize HPPs more proactively. These results provide recommendations for more potent preventive measures as well as significant insights into occupational safety and health regulations in the maritime sector.
Antibacterial Activity Test of a Combination of Ethanol Extract of Bidara Leaf (ziziphus mauritiana) and Betel Leaf (Piper betle L) Against Staphylococcus aureus in Vitro Nadya Robbani, Azka; Putu Dedy Arjita, I; Sutrisna Wiatma, Deny; Retno Setyowati, Ety
International Journal of Health and Pharmaceutical (IJHP) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijhp.v6i1.547

Abstract

Infections caused by Staphylococcus aureus remain a global health problem, particularly due to increasing antibiotic resistance that limits the effectiveness of conventional therapy. This condition encourages the development of alternative antibacterial agents based on natural materials. Bidara leaves (Ziziphus mauritiana) and betel leaves (Piper betle L.) are known to have antibacterial activity, however the potential of their combination against Staphylococcus aureus has not been widely studied. This study aims to evaluate the antibacterial activity of a combination of ethanol extracts of bidara leaves and betel leaves against the growth of Staphylococcus aureus with three variations of concentration ratios, namely 100%:0%, 50%:50%, and 0%:100%. There are also 2 control groups, namely a positive control using the antibiotic Clindamycin and a negative control using 10% DMSO. The study used a true experimental design with a post-test only control group design and was conducted using an inhibition zone test with the disc diffusion method. In addition, phytochemical screening tests were carried out to identify active compounds in each extract. The results of phytochemical screening of bidara leaf extract, betel leaf extract, and their combination showed positive results containing secondary metabolites in the form of alkaloids, flavonoids, tannins, terpenoids, and phenols. The results showed that the average diameter of the inhibition zones formed were group 1 (100%:0%) 25.6 mm, group 2 (50%:50%) 19.4 mm, and group 3 (0%:100%) 26.2 mm. The Mann-Whitney test showed significant differences between groups (P=0.000), however further tests showed that there were no significant differences between the treatment groups. In conclusion, the combination of bidara leaf (Ziziphus mauritiana) and betel leaf (Piper betle L.) extracts has antibacterial activity against Staphylococcus aureus, but does not show a synergistic effect and is not more effective than single extracts.
Co-Authors Didit Yudhanto Muhammad Zaidan Fadhlurrahman Rivlan Nadya Robbani, Azka Nasmi Herlina Sari Putu Dedy Arjita, I Sutrisna Wiatma, Deny