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All Journal Jurnal Teknik Industri International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET)
Fitri Febriyanti
Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering

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Techno-Economic Analysis of Lanthanum Oxide Nanoparticles Production using Combustion Solution and Hydrothermal Supercritical Water Condition Asep Bayu Nandiyanto; Irine Sofianty; Rofi Fadilah Madani; Adani Ghina Puspita Sari; Fitri Febriyanti; Risti Ragadhita; Rina Maryanti; Eddy Soeryanto Soegoto
Jurnal Teknik Industri Vol. 23 No. 2 (2022): August
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol23.No2.79-92

Abstract

Lanthanum oxide (La2O3) nanoparticles are widely applied in various fields and have the potential to be made on a fabrication scope. As a consequence, feasibility studies for generating industries for La2O3 production are required, particularly in developing countries. The purpose of this research was to evaluate and investigate the prospect of the production of La2O3 nanoparticles. This study was carried out to determine whether large-scale La2O3 production using solution combustion (SC) and hydrothermal supercritical water conditions (HSWC) is profitable or not.  The analysis method was evaluated based on economic evaluation parameters such as gross profit margin, payback period, and cumulative net present value, while also taking technical aspects into account by designing commercial tools.  An economic evaluation was made based on estimates of ideal conditions, such as tax increases, changes in raw materials, sales, workers' salaries, and utility costs. The results of the analysis show that the best method, and has great advantages, was the HSWC method. Based on an engineering perspective, this method produces 4.08 tons of La2O3 in 20 years of production. This study is expected to provide information on the production of La2O3 nanoparticles by comparing the solution combustion method and hydrothermal supercritical water conditions on an industrial scale.
GETTING AROUND IN INDONESIA: SURVIVAL MOBILITY LITERACY NEEDS OF BASIC BIPA LEARNERS AND DIGITAL MULTIMODE COMIC RATIONALE Fitri Febriyanti; Mochamad Whilky Rizkyanfi; Nuny Sulistiany Idris
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 8 (2026): JULY
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.21270114

Abstract

The increasing number of BIPA (Indonesian as a Foreign Language), learners highlights the need for contextual and functional learning materials, particularly for beginner-level learners who face real life communication challenges in Indonesia. One essential competency is survival mobility literacy, which refers to the ability to communicate effectively in public transportation contexts. However, learning materials addressing this competency remain limited. This study aims to identify the difficulties and learning material needs of beginner-level BIPA learners related to survival mobility literacy and to formulate a design rationale for a digital multimode comic. A descriptive quantitative approach was employed, involving 15 basic-level BIPA learners from various countries through a questionnaire using a four-point Likert scale. The findings reveal that learners experience difficulties in using dialogues, asking questions, and understanding transportation-related vocabulary. The results also indicate strong preferences for contextual content, visual support, and digitally accessible materials. Based on these findings, a digital multimode comic is proposed as a theoretically and empirically grounded design framework for developing survival mobility literacy materials. This study contributes to the development of contextual, functional, and learner-centered BIPA teaching materials.
Co-Authors Adani Ghina Puspita Sari Asep Bayu Dani Nandiyanto Eddy Soeryanto Soegoto Irine Sofianty Mochamad Whilky Rizkyanfi Nuny Sulistiany Idris Ragadhita, Risti Rina Maryanti Rofi Fadilah Madani