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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Abdi Insani JURNAL FLYWHEEL Jurnal Pengabdian dan Pemberdayaan Nusantara (JPPNu) Bulletin of Community Engagement NUSANTARA: Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Jurnal ELTEK Jurnal Pepadu Asian Journal Science and Engineering Jurnal Teknik Ilmu dan Aplikasi Jurnal Penelitian Teknologi Informasi dan Sains Jurnal ELTEK Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika International Journal of Industrial Innovation and Mechanical Engineering Journal of Evrimata: Engineering and Physics International Journal of Mechanical, Electrical and Civil Engineering KREATIF: Jurnal Pengabdian Masyarakat Nusantara
Achmad Walid
Politeknik Negeri Malang
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PENGEMBANGAN KONSEP RINTISAN EDU WISATA DI UKM CITARA DESA BANJARARUM KEC. SINGOSARI KAB. MALANG Nurhadi, Nurhadi; Wiharya, Chandra; Santoso, Santoso; Listiyono, Listiyono; Walid, Achmad
Jurnal Abdi Insani Vol 11 No 3 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i3.1741

Abstract

UKM Citara is developing a seaweed processing business and cultivating catfish in bioflock ponds together with community members as a food security effort due to the impact of the Covid 19 pandemic at the beginning of 2020. Several government/private agencies have visited UKM to learn about seaweed processing and bioflock catfish cultivation, including vocational school students/internship students.  The problem is that the cultivation area of ​​± 2,000 m has not been utilized optimally and SMEs do not yet have an educational tourism concept for their visitors. The aim of the activity is to optimize land use and design a pilot concept for bioflock fish cultivation tourism. The hope is that the cultivated land will be utilized optimally and there will be educational facilities for other parties who come to UKM. The activity method is creating a tourism edu pilot concept in the form of learning tutorials and exploring places at UKM Citara, creating visual images of tourism edu pilots, installing smart ponds, gazebos, gates and irrigation channels in the UKM Citara bioflock fish farming area. The result of this community service activity is the realization of the concept and realization of a tourism edu pilot for seaweed processing and bioflock fish cultivation at UKM Citara which can improve the functionality of ± 2,000 m of empty land which was originally only used for bioflock fish cultivation, then developed into a tourism edu pilot area. which is useful. Visitors can receive education in the form of tutorials on processing seaweed products and cultivating bioflock fish and can explore seaweed processing and bioflock fish cultivation sites. This activity has increased the use of empty land and realized a pioneering educational tourism concept that needs further development.
Penerapan Teknologi Sederhana Alat Pengebor Tanah untuk Mempermudah Penanaman Benih Tembakau pada Tanah Kering di Kecamatan Guluk-Guluk Sumenep Madura Achmad Walid; Pipit Wahyu Nugroho; Santoso Santoso; Intan Fadhilah; Irwanda Yuni Pungkiarto; Khoirul Anwar
KREATIF: Jurnal Pengabdian Masyarakat Nusantara Vol. 5 No. 3 (2025): Jurnal Pengabdian Masyarakat Nusantara
Publisher : AMIK Veteran Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/kreatif.v5i3.8143

Abstract

Guluk-guluk District is located on Madura Island, Sumenep Regency, East Java Province, and is known as the location of the long-established Annuqayah Islamic Boarding School. This district has a total rice field area of ​​approximately 1,141 hectares, and the majority of its population is engaged in farming. During the dry season, farmers in Guluk-guluk grow tobacco, which is an important trade commodity with high economic value for the local community. However, tobacco farmer groups in Guluk-guluk District face several serious challenges during the dry season. Lack of rainfall causes the soil in tobacco fields to become very hard, making it difficult for farmers to plant tobacco seeds efficiently. Currently, farmers are forced to use traditional tools such as crowbars to dig holes in the hard soil. This process is time-consuming and requires significant labor, reducing production efficiency and increasing farmers' workload. This situation makes it increasingly difficult for farmers to increase their agricultural yields. Therefore, through the Community Service program, the community service team aims to introduce simple technology in the form of soil drilling tools. This tool is designed to simplify the process of planting tobacco seeds in hard, dry soil and increase farmer efficiency. By using this efficient soil drill, it is hoped that the productivity of tobacco farmers in Guluk-guluk will increase. This tool not only speeds up the planting process but also reduces labor requirements, allowing farmers to focus more on other aspects of their farming. This program is expected to have a positive impact on improving farmer welfare and optimizing agricultural yields in Guluk-guluk District. Furthermore, the implementation of this technology is also expected to provide training and skills development for farmers in Guluk-guluk.
The Effect of Bioethanol Blends with 92 Octane Gasoline on Engine Performance and Exhaust Emissions yuniarto agus winoko; Achmad Walid; Mutrofin Rozaq; Akbar Anugrah
Asian Journal Science and Engineering Vol. 4 No. 2 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i2.2134

Abstract

This research focuses on the use of bioethanol mixed with 92-octane gasoline as an alternative fuel to improve engine performance and reduce emissions. The main problem addressed is the lack of optimization in the bioethanol and gasoline mixture ratio, which affects combustion efficiency and engine performance. The results show that mixing bioethanol with gasoline improves the brake mean effective pressure (BMEP) and decreases specific fuel consumption (SFC) at certain engine speeds, indicating enhanced combustion efficiency. However, the mixture ratio beyond a certain percentage (30% ethanol) leads to decreased performance, showing the limits of bioethanol use in fuel blends. The distinctive feature of this study is the comprehensive evaluation of different bioethanol proportions (13%, 15%, and 17%) and their effect on engine performance, providing more specific insights into the optimal fuel mixture for various engine conditions. The results are particularly useful for the automotive industry and policymakers looking to implement bioethanol as a sustainable alternative fuel
Effect of Increased Molecular Force Attraction of NiO (Nickel Oxide) on the Kinetic and Potential Energy of H2O Molecules for Efficient H2O Splitting into H2 Gas Achmad Walid; Haris Puspito Buwono; Lisa Agustryana; Nurhadi Nurhadi
Journal of Evrímata: Engineering and Physics Vol. 02 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.33

Abstract

Nickel oxide (NiO) is a material used due to its remarkable chemical stability, magnetic properties, and electrical characteristics molecules. One notable feature of NiO is its unreactive surface with water (H2O), making it an ideal candidate for use as a cathode in the electrolysis process to produce hydrogen (H2) gas. During electrolyte process, H2 is produced through the oxidation reaction at the anode and the reduction reaction at the cathode. Despite its potential, the detailed mechanism of H2O molecule decomposition using a NiO electrode remains inadequately explained. This research aims to elucidate the increased energy arising from the attractive forces between NiO and H2O molecules. To investigate these attractive forces, simulations were conducted to understand the chemical characteristics of the molecules, including bond lengths, bond angles, and their properties. The results indicated that the use of NiO electrode could increase the potential and kinetic energy of H2O molecules. This energy increase is attributed to the formation of specific polar and non-polar bonds. Specifically, polar bonds were formed between (1) the nickel (Ni) atom in NiO molecules and the oxygen (O) atom in the H2O molecules and (2) the O atom in NiO molecules and the H atom in the H2O molecules. Non-polar bonds were formed between (1) the H atom in the H2O molecules and the Ni atom in NiO molecules, and (2) the O atom in NiO molecules and the O atom in H2O molecules. This study highlights how these interactions help in the electrolysis process by enabling the efficient breakdown of water molecules and the production of hydrogen gas
PENGARUH RASIO SERAT DAN FRAKSI VOLUME TERHADAP KINERJA KOMPOSIT SERAT BAMBU–KAPAS Fachrudin, Arif Rochman; Fina Andika Frida Astuti; Mira Esculenta Martawati; Achmad Walid; Khambali
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 2, Juni 2026 Release
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.55160

Abstract

Natural fiber–based composites are increasingly investigated as environmentally friendly alternative materials. Bamboo fiber is known for its favorable stress distribution due to its natural structure, while cotton fiber contributes to improved stiffness and fiber–matrix bonding. This study aims to evaluate the effect of volume fraction and the combination ratio of bamboo–cotton fibers on the compressive strength of composites. The fiber volume fractions used were 30%, 40%, 50%, and 60%, with combination ratios of 1:1, 1:2, and 2:1. Fabrication was carried out using the vacuum bag method to enhance homogeneity and minimize voids. Compressive testing was conducted according to ASTM D695 standards. The results indicate that increasing fiber volume fraction contributes to higher compressive strength, with a maximum value of 12.8578 MPa at a resin volume fraction of 50% and a bamboo-to-cotton ratio of 1:2. Bamboo fibers provided a dominant contribution to compressive strength, while cotton fibers enhanced stiffness and improved matrix bonding quality.
Penerapan Sistem Suplai Air Terintegrasi untuk Budidaya Bioflok Nila dan Greenhouse Sayur di KWT Mandiri Batu Achmad Walid; Khoirul Anwar; Irwanda Yuni Pungkiarto; Arif Rochman Fachrudin; Intan Fadhilah; Yuniarto Agus Winoko
Nusantara: Jurnal Pengabdian kepada Masyarakat Vol. 6 No. 3 (2026): Agustus: NUSANTARA Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/nusantara.v6i3.10149

Abstract

The Kelompok Wanita Tani (KWT) Mandiri in Mojorejo Hamlet, Batu City, manages Nile tilapia biofloc culture and vegetable production in a greenhouse, but water delivery had relied on a manually moved hose. This community service program aimed to install an integrated water supply system linking a storage tank, booster pump, main pipeline, biofloc pond outlet, and greenhouse distribution line. The activity used technical assistance and technology transfer through field observation, hydraulic design, component selection, pipe fabrication, installation, functional testing, and operational guidance. The installed system successfully conveyed water from the storage tank through the pump and pipeline to the biofloc pond outlet, while the greenhouse distribution line was arranged along the planting beds. Visual testing showed a continuous water flow and confirmed the functional connection among the main components. The system simplified pond filling, organized the distribution network, and reduced the need to move hoses repeatedly. However, performance evaluation remained qualitative because pressure, discharge, head loss, and irrigation uniformity were not measured using gauges or flow meters. Therefore, follow-up monitoring is required to quantify hydraulic performance and optimize irrigation scheduling. The program demonstrates that a simple, maintainable water-supply network can support more practical management of integrated aquaculture and greenhouse activities at the community level.
Karakterisasi Kinerja Pengisian Baterai Sistem PV Off-Grid Berbasis Solar Charge Controller PWM Achmad Walid; Nurhadi Nurhadi; Pondi Udianto
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 5 (2026): September : Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Inf
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i5.1657

Abstract

Small Off-Grid photovoltaic systems require a charge controller to transfer energy safely from the photovoltaic module to the battery. This study characterizes the input-output performance of a 30 A pulse-width-modulation solar charge controller connected to a 20 Wp photovoltaic module and a 12 V, 12 Ah battery. Field measurements were conducted in Tunggul Wulung, Lowokwaru, on 5 September 2026 at one-hour intervals from 08:00 to 16:00. Solar irradiance, module surface temperature, photovoltaic voltage-current, and battery-side voltage-current were recorded. Input power, battery charging power, instantaneous measured efficiency, and interval energy efficiency were calculated. Irradiance ranged from 5.0 to 143.8 W/m² and module temperature from 25.4 to 62.5 °C. The maximum panel power was 2.680 W at 08:00, whereas the maximum battery-input power was 2.361 W at 10:00. Trapezoidal integration yielded 12.524 Wh of panel energy and 10.647 Wh of battery-input energy, corresponding to an aggregate energy efficiency of 85.01%. Instantaneous ratios above 100% at 14:00-16:00 occurred at very low power and are interpreted as apparent efficiencies affected by measurement resolution and non-simultaneous readings, not as physical conversion gains. The results provide a preliminary field baseline and emphasize synchronized measurements and uncertainty reporting for subsequent testing.
Rekayasa Balik dan Evaluasi Kinerja Berbasis Dinamika Fluida Komputasi untuk Pemetaan Operasi dan Revitalisasi Turbin Kaplan Lama di PLTM Sawitto Achmad Walid; Irwanda Yuni Pungkiarto; Khoirul Anwar
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4924

Abstract

This study evaluates the performance while supporting the revitalization of old Kaplan turbines at the Sawitto Mini Hydropower Plant (PLTM) by combining reverse engineering and Computational Fluid Dynamics (CFD) under conditions of incomplete technical documentation. The existing runner geometry was captured using structured-light-based three-dimensional scanning, reconstructed into a digital CAD model, and then analyzed across multiple head, discharge, guide vane opening, and runner angle conditions. Steady-state CFD simulations were employed to assess hydraulic efficiency, shaft power, and operational stability. The results indicate that the runner angle critically determines turbine performance. The 0° configuration yields the overall best performance with the highest efficiency, the most stable power-discharge characteristics, and the widest high-efficiency region on the efficiency contour map, thereby indicating the most optimal blade setting alignment. The +10° configuration increases discharge capacity and output at medium to high heads, but narrows the efficient operating range and increases sensitivity to hydraulic losses outside design conditions. The −10° configuration is relatively stable at low heads and discharges, but restricts flow and reduces output at higher loads. The integration of reverse engineering and CFD provides a practical basis for operational mapping, performance recovery, maintenance planning, and the revitalization of aging mini-hydro turbines.
Co-Authors AA Sudharmawan, AA Agus Sujatmiko Aji, Supa Kusuma Akbar Anugrah Amrullah, Utsman Syah Arif Rochman Fachrudin Arif Rochman Fachrudin, Arif Rochman Asrori Asrori Cahya, Delila Chandra Wiharya Delila Cahya Permatasari Eko Yudiyanto Elka Faizal Farida, Nike Nur Fina Andika Frida Astuti gumono Haris Puspito Buwono Intan Fadhilah Intan Fadhilah Irwanda Yuni Pungkiarto Isa Triyanti Santoso Juliarsyah, Mohammad Rizanto Khambali Khambali Khoirul Anwar KHOIRUL ANWAR Kris Witono Lisa Agustryana Listiyono, Listiyono Mira Esculenta Martawati Monasari, Ratna Mutrofin Rozaq Nurhadi Nurhadi - nurhadi nurhadi Pipit Wahyu Nugroho Pondi Udianto Prasetyo, Ryan Purwoko Purwoko Purwoko Purwoko Ryan Prasetyo Santoso Santoso Santoso Santoso SANTOSO SANTOSO Satworo Adiwidodo Setiawan, Budhy Sugeng Hadi Susilo Triyanti, Isa Umro, Virna Virna umro Audiana Yuni Pungkiarto, Irwanda Yuniarto Agus Winoko Yuniarto Agus Winoko Yuniarto Agus Winoko, Yuniarto Agus