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All Journal Indonesian Journal of Electronics and Instrumentation Systems IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Jurnal Ilmu Komputer dan Informasi Jurnal Ilmu Komputer Jurnal Masyarakat Informatika Proceedings of KNASTIK Jurnal Buana Informatika Jurnal Informatika JUTI: Jurnal Ilmiah Teknologi Informasi Seminar Nasional Informatika (SEMNASIF) Science and Technology Indonesia SISFOTENIKA Angkasa: Jurnal Ilmiah Bidang Teknologi Dewantara Journal of Technology Journal of Materials Exploration and Findings (JMEF) Makara Journal of Science
Ahmad Ashari
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Education Electrical & Electronics Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Physics

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Digitalisasi Distribusi Bibit Tanaman melalui Aplikasi Mobile Berbasis Android Nur Asri, Muh Fitra; Ahmad Ashari; Syakur
Dewantara Journal of Technology Vol. 5 No. 1 (2025): Dewantara Journal of Technology Volume 5 Nomor 1
Publisher : Akademi Teknologi Industri Dewantara Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59563/djtech.v5i1.277

Abstract

Penelitian ini bertujuan untuk merancang dan mengimplementasikan aplikasi sistem informasi penjualan bibit tanaman berbasis Android di Kota Palopo guna memudahkan konsumen dalam melakukan pembelian secara daring. Metode pengembangan yang digunakan adalah model Waterfall, dengan teknik pengumpulan data melalui wawancara, observasi, dan studi pustaka. Perancangan sistem dilakukan menggunakan Unified Modeling Language (UML) yang mencakup use case diagram, activity diagram, entity relationship diagram, dan sequence diagram. Aplikasi ini dibangun menggunakan bahasa pemrograman PHP, XAMPP sebagai web server, MySQL sebagai basis data, serta Android Studio untuk pengembangan dan desain antarmuka. Hasil dari penelitian ini adalah dua jenis aplikasi, yakni aplikasi web untuk admin dan aplikasi Android untuk pengguna, yang dilengkapi dengan fitur-fitur penunjang transaksi penjualan bibit tanaman. Pengujian sistem dilakukan menggunakan metode black box dan menunjukkan bahwa aplikasi berfungsi sesuai dengan kebutuhan. Diharapkan aplikasi ini dapat mempermudah penjual dan pembeli dalam mengelola informasi serta melakukan transaksi bibit tanaman secara efisien dan praktis.
Sustainable Cement Development Using Palm Oil Boiler Ash: Mechanical and Microstructural Evaluation Suraedi, Daral; Sjah, Jessica; Handika, Nuraziz; Jonbi; Ashari, Ahmad
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1188-1197

Abstract

The cement industry significantly contributes to CO2 emissions, releasing approximately 1 ton of CO2 for every ton of cement produced, which accounts for up to 40% of total global industrial emissions. This study aims to mitigate these emissions by utilizing Palm Oil Boiler Ash (POBA) as a clinker substitute, creating POBA Cement with substitution levels ranging from 10% to 30%. The POBA was sourced from the Cikasungka Palm Oil Plantation in Bogor, Indonesia and underwent analysis using X Ray Fluorescence (XRF) andScanningElectron Microscopy (SEM) to assess its chemical properties and microstructure. The findings revealed a decrease in compressive strength with increased POBA substitution levels; however, it maintained a pozzolanic effect that supported the crystallization process, albeit with a longer setting time compared to Ordinary Portland Cement (OPC). Notably, the addition of 1% nano-silica was found to enhance compressive strength more effectively than 3%. This research underscores the potential of POBA as an environmentally friendly clinker substitute for sustainable cement production.
Co-Authors Adi Nugroho Adi Nugroho Aminuyati Antonius Rachmat Chrismanto Astika AyuningTyas, Astika Aulia Desy Nur Utomo Bambang Nurcahyo Prastowo Bernard Renaldy Suteja Dhaneswara, Donanta Dyah Ayu Irawati, Dyah Ayu Edhy Sutanta (Jurusan Teknik Informatika IST AKPRIND Yogyakarta) Effan Najwaini Emi Budi Susilowati F Soesianto Fatmi, Sri Elsa Fauzan Nurahmadi Fiftin Noviyanto Frans N. Allokendek Handika, Nuraziz Jazi Eko Istiyanto John Soetikno Jonbi Khabib Mustofa Kurniawan Lastanto Lukito Edi Nugroho Muhammad Anis, Muhammad Mursid Wahyu Hananto Nur Asri, Muh Fitra Paulus Insap Santosa Pramudi, Chris Agung Puspo Dewanto Ragil Saputra Ragil Saputra Ratna Wardani Retantyo Wardoyo Ridi Ferdiana Selo Sulistyo, Selo Sjah, Jessica Standy Oei Suraedi, Daral Suryo Guritno Suryo Guritno Suryo Guritno Syakur Willy Sudiarto Raharjo