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All Journal HAYATI Journal of Biosciences IPTEK Journal of Proceedings Series Jurnal Matematika & Sains Rekayasa Mesin The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia Jurnal Riset Industri Hasil Hutan PENA SAINS INDONESIAN JOURNAL OF PHARMACY Jurnal Kimia Riset Indonesian Journal of Chemistry Jurnal Ilmu Kefarmasian Indonesia International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Metta : Jurnal Ilmu Multidisiplin Society: Jurnal Pengabdian Masyarakat Journal Of Human And Education (JAHE) Jurnal Ilmiah Berkala Sains dan Terapan Kimia The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy Sewagati International Journal of Cell and Biomedical Science Jurnal Pengabdian Sosial Jurnal Kedokteran Meditek Jurnal Teknologi Maritim Proceedings Conference on Marine Engineering and its Application
Mardi Santoso
Department Of Chemistry Institut Teknologi Sepuluh Nopember, Surabaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Outboard Engine Maintenance and Repair Training for Fishermen and Kelompok Sadar Wisata (PokDarWis) in Tlocor Sidoarjo Gafur, Abdul; Haryono, Edi; Endro, R. Dimas; Alfanda, Benedcita Dian; Pramesti, Lely; Julianto, Eko; Santoso, Mardi; Kusminah, Imah Luluk; Antoko, Bambang; Ariwiyono, Nopem; Umbara, Albert Wida
Society : Jurnal Pengabdian Masyarakat Vol 4, No 3 (2025): Mei
Publisher : Edumedia Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55824/jpm.v4i3.565

Abstract

Outboard Engine has been known and used as motor boat among of the residents of fisherman community in Tlocors village. Motor boats powered by outboard engine are not only used for fishing, but also used as marine tourism facilities. Considering the vital functional usage of outboard engine for Tlocor’s fisherman community and village community tourism groups  (Pokdarwis), for maintaining    economic livelihood, any interrupted items that happened during motor operation periods would be very significant impact on their daily life. Loss of income resulting from engine problem is the most of many potential cases occurred on the communities.   Hence, it is necessary to provide assistances for both Tlocors Communities, the fishermen, and village community tourism groups. Assistances were also considered part of the public service obligation to communities provided by the Institution.  Training on Outboard Engine Maintenance and Repair would become the scheme of the assistances. This tailor- made assistances would be targeted to both clusters. Better understanding and having a certain competency level on outboard engine maintenance and repair would have a significant value in order to empowering both communities, and become the main purpose of the assistance as well
Pengujian Tripotassium Sitrat dan Asam Sitrat Sebagai Fire Retardant Pada Kain Gorden Kurniasih, Dewi; Ashari, Moch. Luqman; Maharani, Aditya; Santoso, Mardi; Cahyaningati, Desi; Rizal, Mochammad Choirul
Metta : Jurnal Ilmu Multidisiplin Vol. 5 No. 2 (2025)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/metta.v5i2.3927

Abstract

Based on data from the Indonesian Police and Fire Department, the number of fire incidents is quite high and the most frequent fires are residential buildings. Therefore, it is necessary to conduct research related to materials that can inhibit the spread of fire. This research was conducted with the intention of determining the ability of Tripotassium Citrate in sweet potato skin and Citric Acid in inhibiting the spread of fire. The purpose of this study was to determine which material is more effective by testing and combining the dosage of each material. The method used was to conduct an experimental test on the combination of these materials in inhibiting the spread of fire. The aspects measured in this study were the mass loss and the area burned from each sample. The experimental results show that Tripotassium citrate has a function in slowing down the fire ignition stage with a mass loss ranging from 0.67 - 0.97 grams and a percentage of burned area ranging from 17.54% - 23.85%. While citric acid has a function in slowing down the fire growth stage with a mass loss ranging from 0.01 - 0.17 grams and a percentage of burned area ranging from 1.75% - 7.08%. The combination of the two materials produced results with a mass loss ranging from 0.2 - 0.8 grams and a percentage of burned area ranging from 4.27% - 14.04%. With these results, it can be concluded that Tripotassium Citrate and Citric Acid can be used as fire retardants.
Pengaruh Penambahan Katalis KOH, NaCl, dan NaOH terhadap Performa Hidrogen Generator untuk Proton Exchange Membrane Fuel Cell (PEMFC) Mustaghfirin, M Anis; Heriyansyah, Rafi Akbar; Tamimah, Nimatut; Novianarenti, Eky; Sa’diyah, Aminatus; Hakam, M; Santoso, Mardi
Jurnal Teknologi Maritim Vol. 8 No. 1 (2025): Jurnal Teknologi Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v8i1.49

Abstract

Katalis dalam hidrogen generator sangat berperan penting dalam menentukan efisiensi produksi hidrogen yang nantinya digunakan dalam Proton Exchange Membrane Fuel Cell (PEMFC). Diantaranya KOH dan NAOH yang sering digunakan dalam elektrolisis air memiliki konduktivitas yang tinggi serta memungkinkan aliran arus yang lebih baik selama elektrolisis. Proses pengujian hidrogen generator menghasilkan 15 variasi hasil data kuantitatif dan kualitatif serta nilai break even ratio. Kualitas power density dan efisiensi fuel cell tertinggi terdapat pada katalis NaCl 0,05M namun dengan Spesific Fuel Consumption (SFC) terendah sebesar 0,58 kg/kWh. Nilai Break Event Ratio terbaik terdapat pada jenis katalis NaCl 0,05 dengan nilai 0,087. Penggunaan Katalis Air Laut memiliki nilai efisien tertinggi pada persentase 100% dengan efisiensi elektroliser mencapai 13,36% dan SFC terendah yakni 0,24 kg/kWh
Skill Upgrade Untuk Meningkatkan Logika Berfikir Siswa MAN 2 Madiun Kota Melalui Workshop Pembuatan Automatic Mobile Robot Sutrisno, Imam; Adianto, Adianto; Santoso, Mardi; Sidi, Pranowo; Indarti, Rini; Herijono, Boedi
Journal Of Human And Education (JAHE) Vol. 4 No. 2 (2024): Journal Of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i2.760

Abstract

Asesmen Kompetensi Minimal (AKM) merupakan salah satu asesmen nasional yang digunakan pada tahun 2021 oleh Kementerian Pendidikan dan Kebudayaan untuk menggantikan ujian nasional tingkat SMA. AKM fokus mengukur kemampuan literasi dan numerikal melalui kemampuan logika dan pemahaman baca siswa. Berdasarkan laporan hasil tes PISA pada tahun 2018, kedua kompetensi ini menjadi masalah mendasar siswa di Indonesia. Untuk memicu peningkatan kemampuan logika siswa MAN 2 Madiun, maka diberikan pengetahuan tambahan di luar kurikulum. Salah satunya melalui kegiatan workshop pembuatan automatic mobile robot. Kegiatan ini juga mampu meningkatkan kompetensi dalam literasi digital, teknologi dan manusia pada era revolusi industri 4.0 karena workshop pembuatan automatic mobile robot banyak digunakan dibidang otomasi industri. Kegiatan dilaksanakan dengan metode luring melalui tatap muka di Aula MAN 2 Madiun untuk menciptakan ruang pembelajaran interaktif. Dari pelaksanaan kegiatan, didapatkan hasil quiz peserta pada setiap pokok materi menunjukkan hasil sangat memuaskan dengan nilai rata-rata 81 dan hasil tes peserta pada akhir pembelajaran juga menunjukkan hasil memuaskan dengan nilai rata-rata 79. Selain itu, dari hasil kuisioner peserta sebagai bentuk respon dari pelaksanaan kegiatan menunjukkan hasil sangat baik. Dengan adanya kegiatan ini, pembuatan automatic mobile robot dapat dijadikan sebagai salah satu kegiatan ekstrakurikuler untuk meningkatkan kompetensi siswa MAN 2 Madiun.
Outboard Engine Maintenance and Repair Training for Fishermen and Kelompok Sadar Wisata (PokDarWis) in Tlocor Sidoarjo Gafur, Abdul; Haryono, Edi; Endro, R. Dimas; Alfanda, Benedcita Dian; Pramesti, Lely; Julianto, Eko; Santoso, Mardi; Kusminah, Imah Luluk; Antoko, Bambang; Ariwiyono, Nopem; Umbara, Albert Wida
Society : Jurnal Pengabdian Masyarakat Vol. 4 No. 3 (2025): Mei
Publisher : Edumedia Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55824/jpm.v4i3.565

Abstract

Outboard Engine has been known and used as motor boat among of the residents of fisherman community in Tlocors village. Motor boats powered by outboard engine are not only used for fishing, but also used as marine tourism facilities. Considering the vital functional usage of outboard engine for Tlocor’s fisherman community and village community tourism groups  (Pokdarwis), for maintaining    economic livelihood, any interrupted items that happened during motor operation periods would be very significant impact on their daily life. Loss of income resulting from engine problem is the most of many potential cases occurred on the communities.   Hence, it is necessary to provide assistances for both Tlocors Communities, the fishermen, and village community tourism groups. Assistances were also considered part of the public service obligation to communities provided by the Institution.  Training on Outboard Engine Maintenance and Repair would become the scheme of the assistances. This tailor- made assistances would be targeted to both clusters. Better understanding and having a certain competency level on outboard engine maintenance and repair would have a significant value in order to empowering both communities, and become the main purpose of the assistance as well
Co(II), Ni(II), Cu(II), and Zn(II)-(E)-N’-(2-Hydroxybenzylidene)benzohydrazide Complexes: Design, Characterization, ADME Study, and Evaluation of Antibacterial Activity Alam, Yusuf Syahril; Fitria, Nuraini; Adama, Amelia Bella Putri; Salsabilla, Shava Alifia; Duhita, Shinta Ratna; Santoso, Mardi; Martak, Fahimah
Indonesian Journal of Chemistry Vol 26, No 1 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.102090

Abstract

Four new hydrazone complexes were successfully synthesized from Co(II), Ni(II), Cu(II), and Zn(II) metal ions with the ligand (E)-N’-(2-hydroxybenzylidene)benzohydrazide. Structural elucidation was performed using CHNSO elemental analysis, FTIR, UV-vis, thermal analysis, and powder XRD. The FTIR spectra indicated the presence of coordination bonds in the form of M–N and M–O. The UV-vis spectrophotometer showed LMCT transitions. TGA characterization revealed that the Co(II), Ni(II), and Cu(II) complex compounds have an M:L ratio of 1:1, whereas the Zn(II) complex compound has an M:L ratio of 1:2. These findings were corroborated by the refinement results of the experimental and standard XRD diffractogram. Accordingly, the formulas of the Co(II), Ni(II), Cu(II), and Zn(II) hydrazone complexes are [Co(L)(Cl)(H2O)], [Ni(L)(H2O)2]Cl2, [Cu(L)(H2O)]Cl, and [Zn(L)2], respectively. Furthermore, based on the determined M:L ratios, the Co(II), Ni(II), and Cu(II) complexes are inferred to possess square planar geometries, while the Zn(II) complex is suggested to be octahedral. The ADME study, aimed at assessing their potential as drug candidates, revealed various pharmacological characteristics of the compounds. Antibacterial evaluation against Staphylococcus aureus (G+) and Escherichia coli (G−) showed the Cu(II) complex with the highest activity.
THERMODYNAMIC ANALYSIS OF ALKALINE ELECTROLYSIS UNDER VISIBLE LIGHT ILLUMINATION: COMPARATIVE ASSESSMENT OF GREEN AND BLUE LED EXPOSURE Santoso, Mardi; Ahmad, Anton Royanto; Sinurat, David Fernando; Hamidi, Nurkholis; Purnami
Jurnal Rekayasa Mesin Vol. 16 No. 3 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

This study explores the thermodynamic behavior of alkaline electrolysis under visible light illumination, focusing on the effects of green and blue wavelengths in the absence of chemical additives. Through a series of controlled experiments, temperature evolution, energy input, and thermal efficiency were analyzed over a 20-minute electrolysis period. Results show that both green and blue light enhance the system's thermal response compared to dark (control) conditions, with blue light achieving the highest temperature rise and energy conversion efficiency. Arrhenius analysis revealed a clear temperature dependence of the rate constant, and strong correlations were observed between temperature rise (ΔT), heat energy (Q), and system efficiency. These findings suggest that visible light particularly blue light can significantly improve the thermal dynamics of electrolysis systems, paving the way for low-cost, passive solar-assisted hydrogen production.
Biosurfactant-Assisted Hydrogen Evolution: Effects of Sapindus Rarak Extract on Alkaline Electrolysis Performance Santoso, Mardi; Sinurat, David Fernando; Ahmad, Anton Royanto; Hamidi, Nurkholis; Purnami, Purnami
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2151

Abstract

Hydrogen production through alkaline water electrolysis is a promising pathway for clean energy generation, yet its efficiency is often limited by gas bubble accumulation on electrode surfaces. This study explores the use of a natural surfactant derived from Sapindus rarak (lerak) as a green additive to improve hydrogen evolution reaction (HER) performance. Experimental results show that the natural surfactant-enhanced system achieved a 135% increase in cumulative hydrogen yield over 10 minutes. Mechanistically, the natural surfactant lowered the surface tension, reduced bubble nucleation size, and promoted faster detachment from the electrode surface, thereby preserving catalytic activity. Compared to synthetic surfactants like sodium lauryl sulfate, Sapindus rarak offers advantages in natural degradability, environmental safety, and regional availability. This study demonstrates that natural plant-based surfactants can serve as effective, eco-friendly enhancers in electrochemical hydrogen production. The results provide a foundation for integrating natural surfactants into scalable and sustainable green hydrogen systems.
THE ROLE OF VISIBLE LIGHT IN OPTIMIZING HYDROGEN YIELD DURING ALKALINE ELECTROLYSIS Santoso, Mardi; Ahmad, Anton Royanto; Purnami, Purnami; Hamidi, Nurkholis
International Journal of Mechanical Engineering Technologies and Applications Vol. 7 No. 1 (2026): January - June
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2026.007.01.13

Abstract

Hydrogen is a clean energy carrier, but the efficiency of its production via alkaline water electrolysis remains a key challenge due to high energy consumption and limited reaction kinetics. This study explores the potential of visible light irradiation—specifically red, green, and blue LEDs—to enhance hydrogen production efficiency under standard electrolysis conditions. Using NiFe electrodes in 30% KOH solution, experiments were conducted at 9 V and 1.5 A for 10 minutes, with each LED source (700 lumens) positioned 50 mm above the electrolyte. Hydrogen yield was recorded via a water displacement method, and temperature changes were monitored to assess photothermal effects. Results showed a significant improvement in hydrogen production under light exposure, with blue light yielding the highest output (17.85 mL), followed by green (13.15 mL), red (10.65 mL), and the non-irradiated control (8.15 mL). These enhancements are attributed to the synergistic effects of photon energy and thermal stimulation, which improve electrochemical kinetics. This study provides evidence that visible light can be an effective, low-cost method to boost hydrogen evolution performance in alkaline electrolysis systems.
Co-Authors Aang Wahidin Adama, Amelia Bella Putri Adianto Adianto Adityo Pratomo Putro Afifah, Rizqi Nur Agustina Merdekawati Ahmad Rizqi Alima Fabri Alam, Yusuf Syahril Alfanda, Benedcita Dian Ananda Krisna Aldianita Andifa, Vinda Aprilia Nurul Angelia Angelia Ani Iryani Anisa Rahma Maharani Anton Royanto Ahmad Ardi Lukman Hakim Arif Fadlan Ariwiyono, Nopem Aunurohim Aunurohim Awik P.D. Nurhayati Azhaar, Nadia Bambang Antoko Benedicta Dian Alfanda C. I. Sutrisno Cahyaningati, Desi Cahyono, Luqman Cicilia Puspa Rini Dahlena Ariyani David StC Black Dewi Kurniasih Dheva Noveilya Didik Prasetyoko Didik Sukoco Djoko Hartanto Duhita, Shinta Ratna Edi Haryono Eko Julianto Eky Novianarenti Endro, R. Dimas Eva Melinda Evan Evan Fadlan, Arif Fahimah Martak Fatimatul Munawaroh Fatimatul Munawaroh Fendra Wician Fendra Wician Fiqey Indriati Eka Sari FITRIA, NURAINI Ghaissani, Shabrina Syifa Gusma Hamdana Putra Hadi Nur Hadi Nur Hakam, M Hanafi Hanafi Haniarta Gemilang Sari Hartati Hartati Hartono Gunarso Hasliza Bahruji Healthy Kainama Helena Fabiani Hendro Agus Widodo, Hendro Agus Henny Tanadi Tan Herdayanto Sulistyo Putro Herijono, Boedi Heriyansyah, Rafi Akbar I Made Putra Ananta W Ikang Martin Trasnowo Imelda Imelda Imelda Priskila Simanjuntak Imroatul Qoniah Ingeswari, Aulya Vidiana Ivan DP Sunardi Jesika Setiawan Jovita Jovita KAMILIA MUSTIKASARI Kamilia Mustikasari Kavin, Layli Adha Nadira kholifatu rosyidah Kholifatu Rosyidah Khozin, Muhamad Nur Kristian Ariya Sedayu Kusdiantomo Kusdiantomo Kusminah, Imah Luluk Kusuma, George Endri Laila Khamsatul Muharrami, Laila Khamsatul Leaw Wai Loon Lingga Kamadatu Lukman Atmaja M Daffa Aditya M. Rizal Fahmi Maharani, Aditya Maria Dewi Astuti Marshel Tendean Marshell Tendean Marshell Tendean Maya Damayanti Mochamad Luqman Ashari Mochammad Choirul Rizal Mochammad Purwanto Mohammad Abu Jami'in Monica Puspa Sari muhammad fatoni, muhammad Muhammad Nur Kholis Muhammad Nur Kholis Mustaghfirin, M Anis Nabilah Dita Anaqah Nadia Sasanti Naufal Salehtra Ghalib Ni Kadek Githa Kartika Gunadyani Nindyapuspa, Ayu Ni’matut Tamimah Noer Komari Nor Farida Novpi Susanto Nugraeni, Christine Dyta Nugraheni, Zjahra Vianita Nur Hayati Nur Hayati Nurjanah, Ana Nurkholis Hamidi Pieter Kakisina Ponti Almas Karamina Pramesti, Lely Pranowo Sidi Purnami Purnami Purnami Purwanto, Mochammad Puspitasari Puspitasari Rahma Rahayu Dinarlita Rahmat Rosid Ratna Ediati Regie Santoso Reynaldi Aurel Fadiilah Rini Indarti RR. Ella Evrita Hestiandari Ruzain Rafie Sukma Putra Salsabila, Yofinta I Salsabilla, Shava Alifia Sarmoko Sarmoko Sa’diyah, Aminatus Sembiring, Rinawati Sinurat, David Fernando Sri Fatmawati Sugeng Triwahyono Sumardiono . Susan Susan Susana Chandra Susanna Ndraha Susi Agustina Wilujeng Susy Budi Astuti SUYATNO Suzanna Ndraha Syafiuddin Syafiuddin Syamsiar, Syamsiar Taslim Ersam Taslim Ersam Umbara, Albert Wida Utomo, Agung Prasetyo Vanuella Tresnaning Budi Wati, First Ambar Wong Hendra Widjaja Yani Cahyo Susilo Yaqdhan Nufal Rafi Yatim Lailun Ni’mah Yuli Kusumawati Yuli Kusumawati Zainul Mujib Zulqurnain, Muhammad