Claim Missing Document
Check
Articles

Found 13 Documents
Search

Pelatihan Pembuatan Krupuk Bunga Telang dan Daun Kelor di Desa Sedapurklagen Kecamatan Benjeng Kabupaten Gresik Dwi Hardaningtyas; Nuraini Kusuma Andriyani; Alfi Nugroho
BERDAYA: Jurnal Pendidikan dan Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2025)
Publisher : LPMP Imperium

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36407/berdaya.v7i1.1476

Abstract

This activity was carried out to increase community empowerment in Sedapurklagen village, Benjeng, Gresik, which produces butterfly pea flower crackers and moringa leaf crackers. The business managed by Mrs. Pamiati has been running since 2018. During the Covid-19 pandemic, this business experienced a decrease in turnover because the public demand also decreased. After the pandemic, the demand for butterfly pea flower crackers and moringa leaf crackers increased so that it was necessary to expand the business that focus on improving the quality and capacity of production. The problem faced by partners in the production sector is that the crackers produced tend to be fragile. So far, the process of making crackers has been carried out in the traditional way, hand-stirred, the measurement of raw materials is based on habit. In terms of equipment, it is also inadequate and less hygienic. In addition, when the rainy season arrives, the cracker dough cannot be dried, so it tends not to produce crackers. This training was attended by 10 participants/residents of Sedapurklagen village on September 8, 2024 and mentoring was held on September 15, 2024. The result was that participants gained an understanding and knowledge about the health potential and business potential of butterfly pea flower crackers and moringa leaf crackers, so that participants had the opportunity to increase their family's economic income.
Multi-Response Optimization of Spark-Ignition Engine Performance Using Methanol–Butanol Ethanol Fuel Blends through Response Surface Methodology Dwi Khusna Khusna; Gatot Setyono; Navik Kholili; Alfi Nugroho
Infotekmesin Vol 17 No 2 (2026): Infotekmesin: Juli 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/

Abstract

Improving combustion efficiency while reducing fuel consumption remains a major challenge in the development of spark-ignition (SI) engines. Oxygenated alcohol fuels have attracted considerable attention because of their potential to improve combustion quality and energy conversion efficiency. However, previous studies have mainly focused on single or binary alcohol blends, whereas comprehensive optimization of ternary methanol–butanol–ethanol (MBE) blends under different engine operating conditions remains limited. This study investigated the combined effects of MBE blend ratio (9–17 vol.%), engine speed (4000–9000 rpm), and ignition timing (15–25°CA) on SI engine performance using Response Surface Methodology based on a Face-Centered Central Composite Design (FCCD). Power, specific fuel consumption (SFC), and thermal efficiency (TE) were selected as response variables, and twenty experimental runs were conducted to develop quadratic prediction models and determine the optimum operating condition through desirability-based multi-response optimization. The developed models exhibited excellent predictive capability, with coefficients of determination (R²) exceeding 0.99 and statistically insignificant lack-of-fit values. Engine speed was identified as the most influential factor affecting all responses. The optimum operating condition was obtained at 16.21 vol.% MBE, 7015.42 rpm, and 24.31°CA, producing 6.32 kW power, 0.499 kg/kW·h SFC, 22.44% thermal efficiency, and an overall desirability of 0.973. These findings suggest that FCCD-based multi-response optimization is an effective approach for improving SI engine performance using ternary MBE fuel blends.
Pengembangan Desain Mesin Opak Jepit yang Ergonomis dan Sesuai Keinginan Konsumen dengan Metode Quality Function Deployment (QFD) Siswadi Siswadi; Alfi Nugroho
JURNAL TECNOSCIENZA Vol. 5 No. 2 (2021): JURNAL TECNOSCIENZA
Publisher : JURNAL TECNOSCIENZA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/tecnoscienza.v5i2.433

Abstract

Opak Jepit merupakan produk makanan ringan tradisional. Salah satu Usaha Mikro Kecil dan Menengah (UMKM) yang memproduksi Opak Jepit yaitu UMKM yang ada di Wonoayu Sidoarjo. produksi opak sebagian besar masih belum memanfaatkan Teknologi Tepat Guna (TTG), sehingga proses produksi kurang efisien dan hasil produksi juga kurang maksimal. Beberapa UMKM Opak di daerah Wonoayu ada yang mulai mencoba menggunakan mesin, namun UMKM tersebut kembali ke proses manual dengan tangan tanpa mesin karena mesin yang ada di pasaran dirasa kurang ergonomis seperti terasa capek punggung dan pegal di tangan. Tujuan dari penelitian ini yaitu mengembangkan desain mesin pembuat opak jepit yang ada dipasaran yang lebih ergonomis untuk mengurangi cidera ringan dan dibuat sesuai dengan keingginan pengguna atau UMKM agar produktivitas meningkat. Metode yang digunakan dalam penelitian yaitu metode Quality Function Deployment (QFD) dengan membuat House of Quality (HOQ). Pengumpulan data dilakukan dengan wawancara dan juga pengisian kuesioner. Hasil penelitian menghasilkan pengembangan desain mesin Opak Jepit yang mempertimbangkan keinginan konsumen berdasarkan urutan prioritas terbesar mulai atribut desain mesin yang tahan lama dengan bobot bobot 0,199 dan prioritas terakhir yaitu pada atribut mudah dibersihkan dengan bobot 0,048. Hasil penentuan urutan prioritas atribut respon teknis yaitu pada atribut bentuk dan ukuran ergonomis dengan skor nilai keterkaitan terbesar yaitu skor 39, prioritas terakhir atribut respon teknis pada atribut pegas pembuka cetakan dan pemanas menggunakan listrik dengan nilai keterkaitan skor 1. Kata kunci: UMKM, TTG, QFD, HOQ