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Pratama, Yusuf
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Effect of Process Variables and Zeolite Adsorbent in Coffee Bean Drying Soeswanto, Bambang; Edi Wahyuni, Ninik Lintang; Prihandini, Ghusrina; Pratama, Yusuf; Firmansyah, Taufik Akbar; Widyabudiningsih, Dewi
Jurnal Internasional Penelitian Teknologi Terapan Vol 4 No 1 (2023): April 2023
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v4i1.100

Abstract

Green coffee beans to be stored for transportation must meet storage quality standards, especially the maximum moisture content of 12.5%, so the drying process must be carried out to achieve quality standards, but still economical. The study aims to obtain optimum operating conditions on the drying of Arabica-type coffee beans using a fluidized bed dryer assisted by zeolite adsorbents in a separated fluidized bed prior to heating, as well as calculating the energy consumption of blowers and air heater. The operating conditions were varied, namely air flow rate of 1.79 – 2.29 m/s, air temperature of 45 o C, 50 o C, and 55 o C, zeolite adsorbent mass of 150 g, 175 g, and 200 g. The coffee beans quality tests carried out were the moisture, carbohydrates, protein content, and the visual appearance of the beans. The results show that the optimum drying process of coffee beans resulting a minimum protein and carbohydrate damage are the air velocity of 2.1 m/s, air temperature of 55°C, drying time of 240 minutes, and zeolite adsorbent mass of 150 grams, with energy consumption of 5.02 KWH (equivalent to 180 MJ/T). The addition of zeolite as much as 150 grams, 175 grams, and 200 grams as adsorbent was able to reduce the relative humidity (RH) of air by 16.65%, 18.60%, and 21.17% respectively. The drying rate of coffee beans is mainly influenced by air temperature (more predominantly) than the adsorption of air humidity by zeolite.
Pengembangan Video Animasi Dengan Aplikasi Powtoon Pada Materi Mawaris Mata Pelajaran Fikih Di MTsN 15 Tanah Datar Pratama, Yusuf; Maimori, Romi; Abra, Abhanda; Susrizal, Silvia
Journal of Information System and Education Development Vol. 3 No. 2 (2025): Journal of Information System and Education Development
Publisher : Manna wa Salwa Foundation (Yayasan Manna wa Salwa)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62386/jised.v3i2.132

Abstract

This thesis research departs from problems seen in the field, where currently many educators still use conventional media. The background of this thesis is that the only media used by teachers in the eyes of Jurisprudence is the blackboard in the school. Even though at the school there are infocus facilities that can be used as learning media, teachers also do not utilize technology-based media. This has an impact on students' interest in learning and the quality of learning. Therefore, the researcher wants to develop an animated video on the Islamic Jurisprudence subject, using the Powtoon application at MTsN 15 Tanah Datar. The aim of this research is to determine the validity and practicality of the product being developed, namely animated videos on the Islamic Jurisprudence subject, the material on Mavaris. This research uses a type of field research, with the ADDIE (Analysis, Design, Development, Implement and Evaluation) development model method. The research procedure begins with the needs analysis stage of product development, the design or product planning stage, the product development stage, the implementation or product testing stage and the evaluation stage. Data collection tools include validation sheets and questionnaires. The product trial subjects are located at MTsN 15 Tanah Datar. Data analysis techniques for validation and response questionnaires use the Aiken Formula. Based on the results of the validity test of animated videos using the Powtoon application in Class IX at MTsN 15 Tanah Datar, the validation results on the media aspect in general are 0.94 with the criteria "very valid" and the validation results on the material aspects in general are 0.91 with the criteria "very valid" so the developed animated video can be used. The research continues to the implementation stage. The animated video was tested on eighteen class IX students for practicality testing. The practicality test on the media display aspect in general received a score of 0.85 with the criteria "very practical" and the material presentation aspect in general received a score of 0.85 with the criteria "very practical". Conclusion: Animated video media using the Powtoon application in Fiqh subjects at MTsN 15 Tanah Datar is suitable for use in Fiqh subjects
Co-Authors Abra, Abhanda Bambang Soeswanto Edi Wahyuni, Ninik Lintang Firmansyah, Taufik Akbar Maimori, Romi Prihandini, Ghusrina Silvia Susrizal Widyabudiningsih, Dewi