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All Journal Jurnal Ilmu Informasi Perpustakaan dan Kearsipan Jurnal Keteknikan Pertanian Tropis dan Biosistem CHIPSET (Journal on Computer Hardware, Signal Processing, Embedded System and Networking) Journal of Fibers and Polymer Composites Andalasian International Journal of Social and Entrepreneurial Development
Fadli Hafizulhaq
Universitas Andalas
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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The Potential of Chitosan-Starch Blend Polymers as Edible Coatings for The Preservation of Fruits and Vegetables: A Mini-Review Fadli Hafizulhaq; Putri Wulandari Zainal; Sharifah Hanis Yasmin Sayid Abdullah
Journal of Fibers and Polymer Composites Vol. 2 No. 2 (2023): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v2i2.126

Abstract

Fruits and vegetables are essential for human life. Maintaining the quality and safety of fruits and vegetables are critical challenges for the food packaging industry in this decade. Chitosan and starch are most widely used for food packaging as they bring unique properties for packaging applications. Chitosan has good antimicrobial properties but weak water vapor permeability. Meanwhile, starch has a better water vapor barrier but has poor mechanical properties. This paper discusses the application of chitosan and starch blends in the field of films and coatings. Several characteristics, such as mechanical, thermal, antimicrobial properties, solubility, and water vapor permeability, are also discussed. This review also discussed several applications of chitosan-starch-based films and coatings for the preservation of fruits and vegetables.
Model Matematis Massa Buah Markisa Manis (Passiflora ligularis Juss) Berbasis Beberapa Sifat Fisik Hafizulhaq, Fadli; Andasuryani
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 11 No. 3 (2023): December 2023
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2023.011.03.09

Abstract

Sifat-sifat fisik dari buah dapat digunakan untuk mendesain sistem maupun mesin yang dapat digunakan dalam proses pascapanen seperti penyortiran dan pengelompokkan. Penelitian ini memiliki fokus dalam mengembangkan model matematis untuk memprediksi massa dari buah markisa manis (Passiflora ligularis Juss) berdasarkan sifat fisiknya. Semua sifat fisik memiliki hubungan yang signifikan terhadap massa (p<0.01). Model matematis dibuat dengan model linier dan kuadratik. Koefisien determinasi dari model menunjukkan tingkat kecocokan dari model. Hasil menunjukkan bahwa model kuadratik memiliki kecocokan yang lebih baik dibandingkan model linier. Model linier terbaik adalah model dengan sifat fisik panjang dengan koefisien determinasi 0.59, sedangkan model kuadratik terbaik adalah model dengan sifat area proyeksi tegak lurus panjang dengan koefisien determinasi 0.62. Nilai koefisien determinasi dari semua model yang berada di sekitar 0.6 menunjukkan bahwa model matematis yang dibuat tergolong moderat.
Early Environmental Awareness Character Education Through Ecoenzyme-Making Training For Telkom Padang Elementary School Students Awalina, Rahmi; Wellyalina, Wellyalina; Hafizulhaq, Fadli; Lubis, Muhammad Iqbal Abdi
Andalasian International Journal of Social and Entrepreneurial Development Vol. 3 No. 02 (2023): Andalasian International Journal of Social and Entrepreneurial Development
Publisher : Institute of Research And Community Service, Andalas University / LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijsed.v3.i02.7-12.2023

Abstract

Environmental education needs to be introduced early on to students from elementary school so that it becomes a provision for every student to have a caring attitude in protecting the environment so that the earth remains sustainable. One of the efforts was carried out through ecoenzyme training for elementary school residents and training students in organic waste management to be useful again. This activity was carried out in the Telkom Padang Elementary School (SD), Padang City, West Sumatra. It consists of two stages of activity, namely counseling on organic waste management and the practice of making ecoenzyme. The implementation of these activities went well for three months from November 2022 to February 2023. The results of this activity were educating elementary school students about the importance of preserving the environment by processing waste into ecoenzymes and forming a positive character of loving the environment from an early age in students and residents school.  
Implementasi Sistem Kontrol PID pada Kotak Penyimpanan Buah Alpukat berbasis Raspberry Pi Pico W Hafizulhaq, Fadli; Harahap, Wenti; Imanuela, Claresta; Chatib, Omil Charmyn; Putri, Renny Eka
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 1 (2025): April 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2015.013.01.06

Abstract

Alpukat merupakan buah klimakterik yang cepat rusak jika disimpan pada suhu ruang. Salah satu cara memperpanjang umur simpan alpukat adalah menyimpannya pada suhu dingin. Penelitian ini memiliki fokus membuat kotak penyimpanan buah dengan menggunakan pendingin termoelektrik atau elemen peltier. Kotak dibuat dengan sistem kontrol PID dengan menggunakan mikrokontroler Raspberry Pi Pico W. Hasil pengujian menunjukkan bahwa kontrol PID berhasil mempertahankan temperatur kotak pada 23 °C atau lebih rendah. Temperatur dapat dipertahankan hingga 1 jam pada kondisi kotak tanpa beban. Saat diberikan beban, temperatur kotak terendah yang dapat dicapai adalah 25.9 °C disebabkan karena beban buah alpukat memproduksi energi panas dari proses respirasi. Percobaan dengan beban juga mengonsumsi arus lebih besar dari pada percobaan tanpa beban.
Persepsi Pengguna Terhadap Aplikasi Terintegrasi di Perpustakaan Universitas Andalas Menggunakan Metode End User Computer Satisfaction (EUCS) Irawati, Vivi; Tri Anggraini, Julinda; Hafizulhaq, Fadli; Saputra, Andi
Ilmu Informasi Perpustakaan dan Kearsipan Vol 14, No 1 (2025): Jurnal Ilmu Informasi Perpustakaan dan Kearsipan
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jiipk.v14i1.133622

Abstract

This study aims to evaluate the level of user satisfaction with the Mandiri Application in supporting the administration of the Library Exemption Certificate (SKBP) in higher education, using the EUCS (End-User Computing Satisfaction) model. The results show that the overall level of user satisfaction is at a high level, which can be seen from the five EUCS dimensions: content, accuracy, format, ease of use, and timeliness. The content dimension received the highest rating due to the relevance of data that supports the information needs of the SKBP, while the timeliness dimension shows satisfaction in terms of time efficiency. Nonetheless, there are significant differences in satisfaction levels based on user characteristics, particularly age and education level, where younger users and those with higher education levels tend to be more satisfied. The research constraint lies in the uneven distribution of respondents, resulting in quite striking variations in perceptions across several characteristics, such as faculty and education level. The results of this study show that the quality of technology, content, and the app's conformity to users' expectations have a positive effect on their satisfaction, and emphasise the importance of a more even distribution of respondents for future similar studies.
Design and Development of A Sorting System for Ripeness and Damage in Avocado (Persea Americana Mill.) Based on Machine Learning Nuari, Aldi; Rahmadya, Budi; Hafizulhaq, Fadli
CHIPSET Vol. 6 No. 02 (2025): Journal on Computer Hardware, Signal Processing, Embedded System and Networkin
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/chipset.6.02.175-185.2025

Abstract

Avocado is an important commodity that requires proper postharvest handling, particularly insorting based on ripeness levels and fruit condition. Conventional methods that still rely onmanual inspection have limitations in terms of accuracy and efficiency. This study proposes areal-time sorting system based on YOLOv8n running on a Raspberry Pi 4 Model B with aGoogle Coral accelerator to detect avocados and classify their ripeness levels as well as damage.The model was trained with a custom dataset and achieved a precision of 77.2%, recall of84.4%, and a macro-average F1-Score of 80.6%. The system was integrated with a camera forimage acquisition and a mini conveyor for the sorting process. Experimental resultsdemonstrated reliable detection with an inference speed of 11.7 ms per image, and field testingsuccessfully classified avocados according to their categories. This system has proven to beeffective, cost-efficient, and supports the improvement of avocado postharvest quality.
Co-Authors - Andasuryani Andi Saputra Awalina, Rahmi Budi Rahmadya Harahap, Wenti Imanuela, Claresta Irawati, Vivi Muhammad Iqbal Abdi Lubis Nuari, Aldi Omil Charmyn Chatib Putri Wulandari Zainal Renny Eka Putri, Renny Eka Sharifah Hanis Yasmin Sayid Abdullah Tri Anggraini, Julinda Wellyalina, Wellyalina