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All Journal Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat ComTech: Computer, Mathematics and Engineering Applications
Ivonne Milichristi Radjawane
Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Mathematics

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The One-Dimensional (1D) Numerical Model: An Application to Oxygen Diffusion in Mitochondria Cell Gandhi Napitupulu; Achmad Nagi; Mutiara Rachmat Putri; Ivonne Milichristi Radjawane
ComTech: Computer, Mathematics and Engineering Applications Vol. 14 No. 2 (2023): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v14i2.9705

Abstract

The first model of oxygen transport was formulated by August Krogh. However, the investigations conducted have yet to yield a complete analytical model and a widely applicable solution for One-Dimensional (1D) network construction. The research sought to provide numerical and analytical solutions for the oxygen transfer model in mitochondrial cells to enable researchers to estimate the molecular dynamics and diffusion characteristics in mitochondrial cells. The oxygen diffusion process in mitochondria was modeled with ID numerical models. The numerical models used to solve the equations were explicit and implicit. The explicit model consisted of Forward Time Center Space (FTCS) and DuFort-Frankel. Meanwhile, the implicit model had Crank-Nicholson and Laasonen. The numerical solutions of the explicit and implicit were divided into four scenarios with a variation of Δt and compared with the analytical solutions. The results show that the Laasonen method is the best in describing the diffusion process. The best scenario with the lowest slope value and small Root Mean Square Error (RMSE) value is scenario 2 (Δt = 3,33E-4 s and Δx = 2,00E-5 cm). The numerical model and analytical solution show that the time required to reach a steady state is 0,7 s. It indicates oxygen exchange in two sides of the mitochondrial cell after 0,7 s.
Pengembangan Nilai-nilai Cinta Laut bagi Anak Suku Laut di Pulau Lipan, Kabupaten Lingga Susanna Nurdjaman; Ivonne Milichristi Radjawane; Jeremy Nugraha Pongrekun; Affan Fadli Rahmadian; Muhammad Ikhwan Fadilah Giantara; Erica Maharani Budiono
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 2 (2024): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.10.2.272-280

Abstract

The empowerment of marginalized communities has increasingly become a crucial issue and program in Indonesia today. The central and local governments strive to empower these communities, including the Sea Tribes on Pulau Lipan. In practice, marginalized community groups are increasingly ignored by the government, as experienced by the Sea Tribe on Lipan Island. This community service program seeks to implement development in the education sector regarding the values of love for the sea for Sea Tribe children at State Elementary School (SDN) 006 Selayar. The curriculum used is prepared by considering the condition analysis made by the service team. This activity aims to foster love and awareness of marine ecosystems in Sea Tribe children so that they can maintain marine conservation and ensure wiser use of the ocean. The method used is to teach children about the sea through exciting and fun interactions about the love of the sea and games. Apart from that, the service team also established a mini library for the Sea Tribe community. The results of the implementation of activities show that the curriculum and method of delivering material and developing skills are appropriate for Sea Tribe students in receiving marine education, which can be measured from the level of children's interest and the relevance of the material that can be applied. Two-way, applicable education effectively educates sea tribe children about maritime affairs. Several obstacles are also faced in implementing the following program, where it is necessary to design a curriculum design that can provide learning to students in a sustainable, structured, practical, and memorable manner so that the instillation of maritime values can be enhanced and not just incidental as happens in the program.
Co-Authors Achmad Nagi Affan Fadli Rahmadian Erica Maharani Budiono Gandhi Napitupulu Jeremy Nugraha Pongrekun Muhammad Ikhwan Fadilah Giantara Mutiara Rachmat Putri Susanna Nurdjaman