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All Journal Jurnal Penelitian Pertanian Terapan JGHTT
Adi Waskito
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Agriculture, Biological Sciences & Forestry Computer Science & IT Other

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STUDI PENDAHULUAN PRODUKSI NITRAT SEBAGAI BAHAN BAKU PUPUK DENGAN METODE PLASMA DISCHARGE Adi Waskito; Anisya Lisdiana; Herkuswyna Isnaniyah Wahab; Rendra Dwi Firmansyah; Ipin Aripin; Djohar Syamsi; Veny Luvita
Jurnal Penelitian Pertanian Terapan Vol 22 No 2 (2022)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v22i2.2313

Abstract

Nitrogen-based fertilizer production mainly involves the Haber-Bosch process, which synthesizes Ammonia via a chemical reaction of N2 from the air and H2 under high temperature and pressure conditions in the presence of a catalyst. However, the environmental concern for greenhouse gas emissions and high energy consumption triggers other Nitrogen fixation method development. The non-thermal plasma oxidation of N2 into Nitrate is a promising method since it has lower energy consumption and a more suitable process condition with a better environmental profile. This study tested the designed plasma discharge reactor tube to produce nitrate from air N2 with varying voltage, time, and airflow rate operating conditions. Nitrate concentration was analyzed using a UV-Vis spectrophotometer. The results show that nitrate concentration changes linearly with the applied voltage in a constant airflow rate and length of treatment time. The highest performance of the plasma discharge reactor was achieved on a 6 kV applied voltage with a flow rate of 0.2 L/min and a treatment time of 40 minutes where the obtained nitrate concentration was 7.7 ppm, which indicated the potential plasma discharged nitrate production for green fertilizer application. Further study shall be carried out to enhance the performance.
Analysis of the Effectiveness of Using Team-Based Quizzes to Improve Student Learning Outcomes in Informatics Subjects in Phase F10 Class of SMA Negeri 4 Surakarta Efendi, Mohamad Danil; Dwi Maryono; Adi Waskito
Journal of Global Hospitality and Tourism Technology Vol. 1 No. 2 (2024): Journal of Global Hospitality and Tourism Technology - December 2024
Publisher : Politeknik NEST

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.14286412

Abstract

This study analyzed the effectiveness of using team-based quizzes in improving student learning outcomes in Informatics subjects in Phase F10 classes at SMA Negeri 4 Surakarta. The research method used an experimental design with an experimental class that used team-based quizzes and a control class that used conventional methods. The results showed a significant increase in student learning outcomes in the experimental class compared to the control class. The average final score of the experimental class increased from 65 to 85, while the control class increased from 66 to 75. These findings suggest that team-based quizzing can increase active participation, cooperation, and understanding of the subject matter by students. This method also provides additional benefits in the development of social skills and cooperation. This study concludes that team-based quizzing is an effective learning method and can be widely applied in education.
Co-Authors Anisya Lisdiana Djohar Syamsi Dwi Maryono Efendi, Mohamad Danil Herkuswyna Isnaniyah Wahab Ipin Aripin Rendra Dwi Firmansyah Veny Luvita