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All Journal Jurnal Dinamis Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Voering Jurnal Rekayasa Material, Manufaktur & Energi CARADDE: Jurnal Pengabdian Kepada Masyarakat Infotekmesin Jurnal Dinamis Community Empowerment Jurnal Ilmiah Wahana Pendidikan Mechanical Engineering for Society and Industry Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Automotive Experiences Abdimas Dinamis Jurnal Medika: Medika
Helen Riupassa
Universitas Sains Dan Teknologi Jayapura, Jayapura, Indonesia
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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PENGARUH PENAMBAHAN ADJUSTER PADA KOMPOR BRIKET TERHADAP JARAK PEMBAKARAN DAN LAJU PERPINDAHAN PANAS KONDUKSI Haurissa, Jusuf; Riupassa, Helen; Nanlohy, Hendry; Suyatno, Suyatno
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1373

Abstract

The effective and efficient use of biomass briquettes is strongly influenced by the type of stove used and the way it is used. This study aims to design a briquette stove by adding an adjuster: the test fuel used honeycomb briquettes and forest fern charcoal. The heat transfer from burning honeycomb briquettes to a pot of water needs to be maintained so that the heat (temperature) remains constant during the combustion process. In the current use of briquettes, the distance between the briquette flame and the pot of water is unstable because the space is getting further away from the pool of cooking water. The combustion distance is getting farther because the bottom of the initial honeycomb briquettes burns out, causing the surface of the briquettes to decrease and move away from the surface of the water pot. Thus the heat given to the pool of water will reduce. The briquette stove needs to be added with an adjuster to overcome this problem. This adjuster serves to raise the honeycomb briquettes if the surface of the briquettes decreases. With the addition of an adjuster, it will be analyzed how much the heat transfer rate and the stability of the burning distance of the honeycomb briquettes will be. In this study, 2 test models will be used: a stove with an adjuster and a stove without an adjuster, using 14 holes in honeycomb briquettes made from forest ferns using starch (tapioca) adhesive. The distance between the surface of the briquettes and the pot of boiled water is 5 cm. The results showed that the briquette stove using an adjuster could maintain the stability of the combustion distance between the surface of the briquette and the pot of water being cooked with an average temperature t = 567.83 0C and conduction heat transfer q = 5285.699 Watt.
Dual pillars of agro-energy transition: Irrigation efficiency and corn waste pyrolysis-fermentation for sustainable ethanol production in Papua lowlands Suyatno; Helen Riupassa; Marthina Mini; Rolling S. Gaspersz; Hendry Y. Nanlohy
Mechanical Engineering for Society and Industry Vol. 6 No. 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.15625

Abstract

Agricultural intensification in Indonesia increasingly relies on fossil energy inputs while leaving substantial agricultural residues underutilized. In Papua’s Keerom lowlands (<100 m altitude), maize expansion has created opportunities for integrating sustainable irrigation management with biomass-based energy systems. This study proposes a dual-pillar agro-energy framework combining irrigation efficiency analysis with pyrolysis–fermentation pathways for valorizing corn residues, particularly cobs and husks. Field survey data from 45 respondents were used to estimate energy inputs in maize cultivation, while pilot-scale pyrolysis experiments (450–550 °C) were conducted to evaluate biochar and bioenergy co-product generation. Results show that total energy input for corn production in Keerom averages 3,950 MJ ha⁻¹, substantially lower than values reported for mechanized highland systems. Slow pyrolysis produced approximately 27% biochar, 38% bio-oil, and 35% syngas, with biochar exhibiting a calorific value of 25.5 MJ kg⁻¹. Ethanol production through dilute acid hydrolysis and simultaneous saccharification fermentation yielded 28.3 L per 100 kg corn feedstock. The integrated system demonstrates potential for improving energy efficiency and reducing agricultural waste while generating decentralized renewable energy. These findings highlight the feasibility of circular agro-energy systems in tropical lowland environments and provide insights for sustainable biofuel development in eastern Indonesia.
Characterizing of Nano Activated Bio-Carbon of Sago Waste as a Homogeneous Combustion Catalyst Hendry Y. Nanlohy; Helen Riupassa; Muji Setiyo
Automotive Experiences Vol. 7 No. 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10619

Abstract

Alternative fuels were developed by blending crude coconut oil and bio-carbon nanoparticles. Bio-carbon, derived from sago waste via pyrolysis and ground using a ball mill, underwent FTIR testing to assess its energy absorption capabilities. SEM analysis was conducted to examine the surface morphology of bio-catalyst with and without crude coconut oil. The findings indicate that incorporating bio-catalyst can enhance mechanical properties, facilitating rapid heat absorption, as evidenced by reduced flashpoint and viscosity. In addition, the results show an increase in fuel mass, broadening of molecular contacts, increased reactivity, and increased heat absorption for easier ignition. This phenomenon indicates that bio-carbon of sago waste have great potential for biofuel use as a homogeneous combustion catalyst.
Sosialisasi dan Pelatihan Pembuatan Filtrasi Air Bersih di Kampung Hobong Distrik Sentani, Jayapura Bambang Suhartawan; Suyatno Suyatno; Sapari Sapari; Helen Riupassa
Jurnal Medika: Medika Vol. 4 No. 2 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/a3778229

Abstract

Access to clean water is still a crucial problem in Hobong Village, Sentani District, Jayapura, which has an impact on the high number of water-related diseases. Initial observations show that 78% of people in this area still use Lake Sentani water without adequate treatment, even though studies show that the quality of the lake water has decreased due to pollution. This community service program aims to improve community knowledge and skills in clean water treatment through a simple filtration system. The methods used include community education in the form of socialization of the importance of clean water, diffusion of science and technology through the creation of filtration system prototypes, training in filter creation and maintenance, mediation between stakeholders, and advocacy for clean water policies. The results of the program showed an increase in community knowledge of up to 100%, with the highest increase in the aspect of filtration system maintenance (182.1%). The filtration system developed effectively reduced E. coli (97.9%), Total Coliform (93.3%), turbidity (84.4%), and color (82.9%). This program also succeeded in forming a Clean Water Care Community Group, encouraging the ratification of Village Regulations on Clean Water Management, and obtaining village fund allocations for the development of filtration systems. A 61.7% reduction in diarrhea cases in the 3-month post-program period proves that a comprehensive approach to providing clean water can have a significant impact on public health in remote areas.
PENINGKATAN LITERASI DIGITAL SISWA SMP YPK BETLEHEM SANGGARIA MELALUI PELATIHAN MICROSOFT WORD DAN EXCEL Rosalin Theophilia Tayane; Peliman Ndibau; Helen Riupassa; Rafif D. N. Andika; Jimirson E. Way
JURNAL ABDIMAS DINAMIS : JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 7 No 2. Juni (2026): Abdimas Dinamis
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat USTJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58839/jad.v7i2.1654

Abstract

Kemampuan literasi digital menjadi kebutuhan penting bagi siswa dalam mengikuti proses pembelajaran, mengerjakan tugas, dan mempersiapkan diri memasuki jenjang pendidikan berikutnya. Kegiatan Pengabdian kepada Masyarakat (PkM) ini dilaksanakan untuk memperkuat keterampilan siswa kelas 9 SMP YPK Betlehem Kampung Sanggaria, Distrik Arso Barat, Kabupaten Keerom dalam mengoperasikan Microsoft Word dan Microsoft Excel. Masalah utama mitra adalah masih terbatasnya kemampuan siswa dalam mengetik dan merapikan dokumen, membuat tabel, menyimpan file, memasukkan data, menggunakan rumus dasar, serta menampilkan data dalam bentuk diagram. Metode kegiatan menggunakan pelatihan praktik dan pendampingan langsung yang disusun melalui tahap persiapan, survei, pelaksanaan, dan evaluasi. Kegiatan berlangsung pada 26-27 Februari 2026 dan diikuti oleh 20 siswa. Pengukuran capaian dilakukan melalui kuesioner pre-test dan post-test dengan tiga kategori, yaitu sangat bisa, bisa, dan tidak bisa. Hasil kegiatan memperlihatkan perubahan kemampuan yang positif. Pada materi Microsoft Word, kategori tidak bisa berkurang dari 64% menjadi 2%, sedangkan kategori sangat bisa naik dari 5% menjadi 64%. Pada materi Microsoft Excel, kategori tidak bisa menurun dari 72% menjadi 2%, sementara kategori sangat bisa meningkat dari 4% menjadi 50%. Temuan ini menunjukkan bahwa pelatihan yang menekankan praktik, contoh langsung, dan pendampingan personal efektif untuk meningkatkan kemampuan digital dasar siswa. Program ini dapat menjadi dasar bagi sekolah dalam membangun budaya pembelajaran berbasis dokumen digital secara berkelanjutan Kata kunci: literasi digital; Microsoft Word; Microsoft Excel; pelatihan; siswa SMP
Converting corncob waste into liquid smoke and biochar: A circular energy initiative in Naramben Village Gasperzs, Rolling; Mini, Marthina; Riupassa, Helen; Marianingsih, Susi; Suyatno, Suyatno; Nanlohy, Hendry Y.
Community Empowerment Vol. 11 No. 2 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.15462

Abstract

Corncob waste in Naramben Village is traditionally underutilized and frequently subjected to open burning, leading to air pollution and localized environmental degradation. This program introduces simple pyrolysis technology to equip local residents with the practical skills needed to transform this agricultural waste into value-added commodities: liquid smoke and biochar. Executed through a participatory framework, the initiative combined strategic preparation, hands-on production workshops, and educational dissemination. The program drove a substantial shift in community renewable energy literacy, with participants successfully adopting liquid smoke as an organic pesticide and natural fish preservative. From a technical standpoint, utilizing a 50-liter drum-type pyrolyzer over a two-hour cycle consistently yielded 1.5 to 2 liters of liquid smoke and 5 kg of biochar per batch. Evaluations confirmed that the direct demonstration approach effectively fostered operational independence among the villagers. Ultimately, this localized waste-to-energy model mitigates open-burning pollution, unlocks new micro-economic avenues, and advances clean energy resilience.
Co-Authors Alfons, Alfred Benjamin Andi Sanata Andika Prasetya Bambang Suhartawan Basri Katjo Bonefasius Bao Bosta Sihombing Calvin R. Rumansara Fairuddin, Fairuddin Gasperzs, Rolling Harsanta, Bagus E. Haurissa, Jusuf Hendry Y. Nanlohy Herman Hi. Tjolleng Taba Herman Tjolleng Taba Hotnida Nainggolan I Made Rasta Ikhwansyah Isranuri Iriyanto, Santje M Iriyanto, Santje Magdalena Jimirson E. Way Kenny H Marianingsih, susi Marthina Mini Marthina Mini Marthina Mini Marthina Mini Marthina Mini, Marthina Martina Mini Masaki Yamaguchi Masaki Yamaguchi Mebin Samuel Panithasan Muhammad Akhlis Rizza Muji Setiyo Nevada. J. M. Nanulaitta Peliman Ndibau Rachmat Subagyo Raehan, Muhammad Alif Rafif D. N. Andika Ribut Jayanto Rolling Gasperzs Rolling S. Gaspersz Rosalin Theophilia Tayane Sapari Sapari Satworo Adiwidodo Selcuk Sarikoc Susi Marianingsih Suyatno Suyatno Suyatno Suyatno Suyatno Syamsudin Usman T. Ahri Bahriun Takuya Tomidokoro THOMAS KBAREK Thomas Kbarek Timang, Rison Sando Trismawati Trismawati Trismawati Trismawati Trismawati, Trismawati Tugiman Tugiman Ulwan, Abdullah Usman, Syamsudin Walintukan, Akbar Vicky V Yamaguchi, Masaki