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Journal : BULLET : Jurnal Multidisiplin Ilmu

Evaluasi Fisiologi Kerja pada Pengrajin Sepatu Surabaya Perdana Suteja Putra; Meidina Nabila
BULLET : Jurnal Multidisiplin Ilmu Vol. 2 No. 4 (2023): BULLET : Jurnal Multidisiplin Ilmu (INPRESS)
Publisher : CV. Multi Kreasi Media

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Abstract

The purpose of this study was to assess cardiovascular strain during crafting procedures in terms of physical workload, using heart rate fluctuations and pain complaints. Researchers used the Nordic Body Map questionnaire (NBM) to quantify resting and working heart rates, cardiovascular load (%CVL), cardiovascular strain (%CVS), reserve heart rate (%RHR), energy expenditure, oxygen intake, and pain complaints in 35 participants. The job was assessed as satisfactory based on the results of%CVL and%CVS. Similarly, a high-level category for %RHR in moderate energy expenditure was recorded. However, utilising the NBM questionnaire, there are many complaints of hand pain. As a result, there is a need to adapt the work content of the equipment used while keeping the physical effort at an acceptable level, as this will increase their productivity and reduce their health risk.
Reliabilitas Kendaraan Listrik Silvi Istiqomah; Perdana Suteja Putra; Rizqa Amelia Zunaidi; Rizha Nurmila Hilda
BULLET : Jurnal Multidisiplin Ilmu Vol. 2 No. 5 (2023): BULLET : Jurnal Multidisiplin Ilmu
Publisher : CV. Multi Kreasi Media

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Abstract

The global transition towards sustainable transportation solutions has spurred the rapid growth of electric vehicles (EVs) as a promising alternative to traditional internal combustion engine vehicles. However, as the adoption of EVs continues to accelerate, the focus has shifted towards ensuring the longevity of electric vehicle operations worldwide. This study aims to provide an in-depth exploration of the multifaceted aspects surrounding the longevity of EV operations on a global scale. The longevity of electric vehicle operations encompasses various dimensions, including technological advancements, infrastructure development, policy support, and consumer behavior. Firstly, advancements in battery technology play a pivotal role in determining the lifespan of EVs. The article delves into the evolution of battery chemistries, energy densities, and thermal management systems, which collectively impact battery life and overall vehicle longevity. Additionally, insights into battery recycling and second-life applications are discussed as essential strategies to mitigate environmental impacts and enhance the sustainability of EV operations.