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All Journal Equilibrium Journal of Chemical Engineering Cerdika: Jurnal Ilmiah Indonesia Ranah Research : Journal of Multidisciplinary Research and Development
Handayani, Sri Dewi
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Energy Engineering Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Transportation Other

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Analisis Risiko Ergonomi dan Prevalensi Musculoskeletal Disorders (MSDs) pada Pekerja Kasir Menggunakan CMDQ dan REBA Handayani, Sri Dewi; Suharyanto, Suharyanto
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 7 No. 3 (2025): Ranah Research : Journal Of Multidisciplinary Research and Development
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v7i3.1493

Abstract

Work-related musculoskeletal disorders (MSDs) are one of the leading causes of sick leave and disability in many countries. Cashier jobs have a high risk of MSDs due to static work postures and repetitive movements. Several studies have identified ergonomic risk factors in cashier workers but studies using CMDQ and REBA in analyzing the risk of MSDs in workers are still limited. This study aims to evaluate the prevalence and risk factors causing MSDs in cashier workers and identify the relationship of individual and occupational factors to MSDs complaints. This study involved 114 self-service cashier workers aged 18-55 years. Data were collected through the completion of demographic questionnaires, CMDQ forms and work posture analysis using REBA. REBA results show that 1.8% of workers have low risk, 77.2% of workers have work postures with moderate risk levels, 18.4% of workers have high risk, and 2.6% have very high risk so that further investigation and changes to posture are needed. Results from the CMDQ showed that the highest prevalence of pain was in the right leg (86.8%), left leg (84.2%), and lower back (76.3%). Significant risk factors included age (p = 2.781 x 10-8), length of service (p = 6.66 x 10-11), body mass index (p = 1.47 x 10-7), gender (p = 0.005), and work posture measured using REBA (p = 2.2 x 10-16). Kendall-Tau test also showed a positive relationship between these variables and MSDs complaints. This study shows that cashier workers with high work posture risk have a greater prevalence of MSDs. Multiple linear regression tests showed that the dominant factors causing MSDs complaints in cashier workers were posture and workstation height. Ergonomic recommendations are needed to reduce the risk of MSDs, especially for workers with high risk levels.
PENGEMBANGAN MODUL INTERAKTIF MATERI SATU TITIK BERBASIS KEARIFAN LOKAL BREBES Handayani, Sri Dewi; Nisa, Hany Uswatun; Kurniawan, Prasetyo Yuli
Cerdika: Jurnal Ilmiah Indonesia Vol. 3 No. 7 (2023): Cerdika : Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v3i7.645

Abstract

Modul merupakan sumber belajar yang berisi materi, metode, Batasan-batasan, dan cara mengevalusasi yang dirancang secara sistematis dan menarik untuk mencapai kompetensi yang diharapkan sesuai dengan tingkat kompleksitasnya. Tujuan dari penelitian ini yaitu untuk mendeskripsikan kebutuhan pendidik dan peserta didik, penyusunan draft modul dan validasi ahli terhadap pengembangan modul interaktif materi satu titik berbasis kearifan lokal Brebes. Penelitian ini menggunakan metode  penelitian (R&D) yaitu dengan menggunakan pengembangan 4D . Hasil penelitian ini yaitu modull interaktif  materi satu titik berbasis kearifan lokal Brebes sesuai dengan kebutuhan pendidik dan peserta didik dan berdasarkan penilaian dari para ahli media maupun materi modul ini dikategorikan layak digunakan dalam pembelajaran.
Planning of Granular Activated Carbon Unit to Remove Ammonia and TSS at IPLT X, Kota Jakarta Handayani, Sri Dewi; Priutama, Yesaya Emeraldy; Rahmalia, Intan; Hilmi, Farhan Muhammad; Aryanto, Reifaldy Tsany Betta; Sofiyah, Evi Siti; Sarwono, Ariyanti; Suryawan, I Wayan Koko
Equilibrium Journal of Chemical Engineering Vol 6, No 2 (2022): Volume 6, No 2 December 2022
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v6i2.61216

Abstract

ABSTRACT. Fecal sludge can be treated by conventional treatment such as pond stabilization which is commonly used to reduce organic concentrations. However, nutrients such as NH3 are still widely measured in the effluent. One of the sewerage treatments in the city of Jakarta, for example, experienced this condition. This study aims to design an appropriate technology to increase the efficiency of nutrient ammonia and total suspended solid (TSS) removal at Duri X IPLT. The unit added in the selected effluent treatment is Granular Activated Carbon (GAC). Design considerations are the characteristics of activated carbon, operating conditions (discharge and contact time), and operating mode (fixed-, expanded-, or fluidized-bed, pumped, or gravity flow). The Carbon Usage Rate for removing ammonia and TSS is 1.384 g/L and 0.378 g/L, respectively. Maintenance is required so that the granular activated carbon (GAC) unit can continue operating and functioning properly. Blockages in carbon transport pipes can occur in many pipes. This can occur due to a too-small pipe, a short bend radius of the pipe, a lack of speed, and a lack of cleaning of the pipe. The eroded pipe is also a common problem that often occurs in unlined mild steel and fiberglass reinforced plastic (FRP), usually in sharp bends.Keywords: Sewerage, ammonia, TSS, design, GAC
Co-Authors Aryanto, Reifaldy Tsany Betta Hilmi, Farhan Muhammad Nisa, Hany Uswatun Prasetyo Yuli Kurniawan Priutama, Yesaya Emeraldy Rahmalia, Intan Sarwono, Ariyanti Sofiyah, Evi Siti Suharyanto Suryawan, I Wayan Koko