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All Journal Rekayasa Mesin Jurnal Dimensi Turbo : Jurnal Program Studi Teknik Mesin Journal of Computer Science and Informatics Engineering (J-Cosine) JUPE : Jurnal Pendidikan Mandala Jurnal TAMBORA Jurnal Energi dan Teknologi Manufaktur Otopro Scientific Journal of Mechanical Engineering Kinematika Community Development Journal: Jurnal Pengabdian Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat JURNAL FLYWHEEL International Journal Of Science, Technology & Management (IJSTM) Hexagon JASTEN (Jurnal Aplikasi Sains Teknologi Nasional Jurnal Pengabdian Rekayasa Sistem Jurnal Gear : Energi, Perancangan, Manufaktur & Material Impression : Jurnal Teknologi dan Informasi PROTON : Jurnal Ilmu-Ilmu Teknik Mesin METAL
Mietra Anggara
Universitas Teknologi Sumbawa
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The Effect of Differentiated Learning Implementation on Learning Motivation and Student Learning Outcomes of SMA Negeri 1 Poto Tano Rohyanti, Sari Dewi; Suparman, Suparman; Anggara, Mietra
JUPE : Jurnal Pendidikan Mandala Vol 8, No 4 (2023): JUPE : Jurnal Pendidikan Mandala (Desember)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jupe.v8i4.6299

Abstract

There are two objectives of this study, first, to explain how the strategy of implementing differentiated learning to improve students' motivation and learning outcomes in Biology subjects in class XI students at SMA Negeri 1 Poto Tano. Second, to analyze how the effect of the application of differentiated learning on student motivation and learning outcomes in biology subjects in class XI students of SMA Negeri 1 Poto Tano. The type of research used in this study is quantitative research with experimental methods. The subjects in this study were all students of class XI-2 as many as 33 people who acted as an experimental class and XI-3 as many as 31 students who acted as a control class. The instruments used in this study were learning outcome tests and student learning motivation questionnaires. The results of data analysis obtained that the significance value < t, namely (0.000 < 0.05), then there is a significant effect in the motivation and learning outcomes of students in biology subjects between the group that applies differentiated learning (experimental group) and the group that applies conventional learning (control group) at SMA Negeri 1 Poto Tano. 
ANALISIS KUALITAS BRIKET CAMPURAN KULIT KEMIRI DAN BONGGOL JAGUNG SEBAGAI BAHAN BAKAR ALTERNATIF Anggara, Mietra; Robbani, Farisan; Rasyid, Muhammad Yaz; Dhanasmara, Hamratul Aisyah; Samanhudi, M. Syawqi; Hidayah, Rini Nirmala
Otopro Vol 19 No 2 Mei 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v19n2.p45-49

Abstract

The increase in human population in the world is proportional to the increase in energy needs. Energy needs are still dominated by fossil energy. Efforts to reduce dependence on fossil energy are by using natural reserves from abundant energy sources, namely biomass. Utilization of candlenut shells and corn cob waste which are abundant in the West Nusa Tenggara (NTB) area can be used as mixed materials for making charcoal briquettes. The target of this research is to analyse the quality of a mixture of charcoal briquettes from a mixture of candlenut shells and corn cobs as an alternative future fuel. In the process of this research, variations of the mixture of candlenut shells and cobs were carried out with variable composition 1 (65% candlenut husk; 25% corn cob; 10% adhesive; variable 2 (55% candlenut husk; 35% corn cob; 10% adhesive); and variable 3 (45% candlenut husk; 45% corn cob; 10% adhesive). In this test, the calorific value, combustion rate, and emission gas test were calculated. The results showed that the mixture was 65% candlenut husk, 25% corn cob, and 10% adhesive. has the highest heating value of 5010 joules, which is according to SNI at least 5000 joules, the combustion rate is 0.91 g/m, and exhaust emissions are CO (1.18), CO2 (2.92), O2 (20.9) and HC (395 ) has met Indonesian national standards according to Minister of Environment Regulation Number 05 of 2006 concerning Emission Standards.
PERANCANGAN KINCIR AIR PEMBANGKIT LISTRIK TENAGA MIKROHIDRO ALIRAN HEAD RENDAH: Studi Kasus Di Desa Manemeng Kecamatan Brang Ene Kabupaten Sumbawa Barat Haizan; Mietra Anggara; Fadhli Dzhil Ikram; Aldrin
Hexagon Vol 6 No 2 (2025): Vol. 6 No. 2 (2025): HEXAGON - Edisi 12
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/hexagon.v6i2.5072

Abstract

This study designs a water wheel for micro-hydropower generation with low-head flow of the Undershot type. The water wheel is designed with a head height of 0.5 meters, a diameter of 1.10 meters, and 16 blades, producing a planned power of 6.536 kW. The peripheral speed of the wheel is 0.28 meters per second with a rotation speed of 4.05 rpm. The blade receives water at a rate of 1.4 m³/second, generating a fluid force of 840 Newtons. The angular velocity of the wheel is 0.424 rad/second, and the shaft power is 5.556 kW with a shaft diameter of 0.10 meters. The static equivalent load is calculated to be 438.91 Newtons. This water wheel is expected to utilize slow but constant water flow to generate electricity, helping the rice field area in Manemeng village to maximize harvest yields and control pests.
rancang bangun mesin pemecah kemiri dengan metode lempar untuk meningkatkan produktivitas dengan kapasitas 20kg/jam: rancang bangun mesin pemecah kemiri dengan metode lempar untuk meningkatkan produktivitas dengan kapasitas 20kg/jam Sastra Afriansa; Mietra Anggara; Amri Hidayat; Afrianto
Hexagon Vol 6 No 2 (2025): Vol. 6 No. 2 (2025): HEXAGON - Edisi 12
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/hexagon.v6i2.5776

Abstract

In general, the process of cracking candlenuts still uses a manual process with rattan bags and hit on stones, so it requires a lot of manpower with special skills. The method used in this study is the throwing system. Based on the results of the study, the results of the rotor test with an average test using 3 rpm variations. Where using 800 rpm obtained intact results with a value of 24.39%, split in half 21.13%, crushed 4.87% and not broken 44.71%. Then with the use of 1000 rpm obtained intact results with a value of 28.45%, split in half 19.51%, crushed 4.06% and not broken 41.46%. While the use of 1200 rpm can produce intact cores 27.23%, split in half 18.29%, crushed 16.26% and not broken 32.52%. So in the test with the rotor using 3 rpm variations (800,100, and 1200) the results of the intact core were obtained with a rotation of 1200 rpm with a result of 27.23%. So by using the designed candlenut nut cracker, the production capacity of the cracker is able to break with a capacity of up to 20 kg / hour.
KOMPARASI KONSENTRASI HIDROGEN SENSOR MQ-2 TERHADAP LUAS DAN WARNA NYALA API HASIL ELEKTROLISIS AIR Bernardus Crisanto Putra Mbulu; Danang Murdiyanto; Mietra Anggara
Scientific Journal of Mechanical Engineering Kinematika Vol 8 No 1 (2023): SJME Kinematika Juni 2023
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v8i1.234

Abstract

Hydrogen is a fuel that is being developed today as a substitute for fossil fuels that are depleting. One way to produce hydrogen fuel is through the electrolysis method using a water-based HHO generator. This study aims to determine how much hydrogen is produced from each electrolyte solution, which is then compared to the area and color of the resulting flame. The comparison of each electrolyte solution comes from the ratio of moles of solute and solvent (H2O), which is 1:12, with the solutes used being NaCl, CH3COOH, and NaHCO3. The concentration of hydrogen gas produced is detected using the MQ-2 sensor. At the same time, the area and color of the flames are obtained through the results of a 20-minute combustion video, which is made into 100 photo frames for each electrolyte solution. The results of this study showed that the average hydrogen production for NaCl solute was 891.0 ppm and the flame area was 12.64 mm2 without blue color, the solute CH3COOH was 917.33 ppm, the flame area was 16.46 mm2 with 40.52% blue color, and NaHCO3 solute was 980.67 ppm with a flame area of 17.47 mm2 with 76.19% blue color
Analisis kinerja variasi jenis dan ketebalan isolator pada dinding ruang mesin pengering kemiri Zaky Abdul Aziz; Mietra Anggara
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 1 (2022): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.1921

Abstract

Candlenut (Aleurites moluccana Willd) has various benefits and has high economic value. Candlenut seeds are widely used by the community as cooking spices, for cosmetic purposes, until the oil is taken for industrial purposes. So far, the process of processing candlenut seeds carried out by candlenut entrepreneurs in Batulanteh District, Batu Dulang Village, Sumbawa Regency is still simple, namely by drying under direct sunlight and using a solar dryer. This causes the drying process of candlenut seeds to take quite a long time. To increase the drying time of candlenut seeds, further research is needed on the development of a candlenut drying machine. This research is a study on the development of a candlenut drying machine by comparing variations in the type and thickness of the insulator on the wall surface of the candlenut drying room. The results of the study with a time of 60 minutes with a temperature of 80°C and a thickness of 6 mm showed that the use of aluminum foil, glasswool, and stryfoam insulators can accelerate the evaporation of hazelnut moisture content with values of 3%, 2%, and 2%, respectively.
ANALISIS VARIASI WAKTU PENGERINGAN DAN KECEPATAN UDARA PANAS TERHADAP KINERJA PADA MESIN PENGERING KERUPUK RUMPUT LAUT DENGAN SISTEM HYBRID Muhammad Yaz Rasyid; Mietra Anggara; Aldrin Aldrin; Fadhli Dzil Ikram
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 4 No 1 (2026): Edisi 7
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/gear.v4i1.4470

Abstract

Seaweed is a strategic commodity for aquaculture which has benefits as a food ingredient. The seaweed that is popular with the public is seaweed crackers. Technological developments have developed drying using the fluidization principle. The aim of the research was to determine variations in air speed and variations in drying time on drying rate, water content, drying efficiency. 180 minute test, the highest drying rate value was at 1 m/s, namely 2.03 g/minute, the lowest drying rate value was at 2 m/s, namely 2 g/minute, in the 360 ??minute test, the highest drying rate value occurred at 1 m/s. s, namely 1.10 g/minute, the lowest value of drying rate at 1.5 m/s, namely 1.08 g/minute. Drying 180 minutes with varying air speeds of 1 m/s, 1.5 m/s, 2 m/s, water content is 7.74%, 8.08%, 8.8%.  Drying 360 minutes with varying air speeds of 1 m/s, 1.5 m/s, 2 m/s, water content is 1.62%, 2.34%, 2.04%, all water content meets SNI. Drying 180 minutes with varying air speeds of 1 m/s, 1.5 m/s, 2 m/s, drying efficiency is 6.67%, 5.71%, 6.26%. 360 minutes drying with varying air speeds of 1 m/s, 1.5 m/s, 2 m/s, drying efficiency of 3.82%, 3.59%, 3.58%.  
Modifikasi Lapisan Tungku Bakar Dan Kecepatan Aliran Udara untuk Meningkatkan Kinerja Kompor Oli Bekas Aditya Syah; Muhamad Hidayat; Mietra Anggara; Aldrin Aldrin
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 4 No 2 (2026): Edisi 8
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/gear.v4i2.7212

Abstract

This research is motivated by the increasing price and scarcity of 3 kg LPG in Indonesia, particularly in Dompu Regency, West Nusa Tenggara, which burdens the low-income community. In addition, the abundant waste lubricating oil from motor vehicles poses an environmental hazard if not utilized properly. The objective of this study is to modify a prototype of a used oil stove to enhance its thermal performance evaluated through the Water Boiling Test (WBT) method. The methodology involves computer-aided mechanical design followed by adding a 6 mm fiberglass insulation layer around the combustion chamber and integrating an internal air flow control valve in the inlet pipe. The experiments were conducted using four operational variables combining air pressure levels and insulation states for boiling 3 liters of water. The results demonstrated that the maximum flame temperature reached 270°C under high air pressure combined with fiberglass insulation. The highest thermal efficiency achieved was 37% with a fuel consumption rate of 19.63 g/min, yielding an input power of 196.25 W and an output power of 71.74 W. The modification successfully elevated the stove's thermal performance, providing a cost-effective and eco-friendly energy alternative.
RANCANG BANGUN BURNER STOVE BERBAHAN BAKAR OLI BEKAS SEBAGAI SUMBER PANAS PADA ALAT PENGERING BIJI KOPI M.Rizal Fauzi; Fadhli Dzil Ikram; Mietra Anggara; Amri Hidayat
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 4 No 2 (2026): Edisi 8
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste-oil management is a critical environmental issue, as used oil is classified as hazardous and toxic (B3) waste whose volume keeps rising with the growth of motor vehicles in Indonesia. Meanwhile, coffee farmers in Dusun Punik, Batu Lanteh District, Sumbawa Regency still face difficulties in post-harvest coffee bean drying due to their dependence on sunlight and the increasingly limited supply of firewood. This study aims to design, fabricate, and test a used-oil-fueled burner stove as a heat source for a coffee bean dryer, offering a productive use for used-oil waste. The method includes a literature review, a field study, design using Autodesk Inventor, fabrication at the Mechanical Engineering Workshop of Universitas Teknologi Sumbawa, and performance testing with three test repetitions to measure drying-chamber temperature, time to reach the target temperature, and fuel consumption. The device consists of a combustion chamber made from 4-inch A283 Grade C steel pipe, a fuel tank made from 2-inch steel pipe, a support frame made from 40×40×3 mm SS400 angle iron, a 52 cm hot-air pipe, a ¼-inch valve, and a blower. Test results show the burner stove reached the target drying temperature of 50–55°C, with an average maximum temperature of 55°C, an average time to target of 17.93 minutes, and an average fuel consumption of 253.33 ml. These results indicate that using waste oil as a heat source for coffee-bean drying is a feasible, efficient, economical, and sustainable solution.  
Evaluasi Kinerja Pembangkit Listrik Tenaga Mikro Hidro (PLTMH) Desa Tepal, Kabupaten Sumbawa pada Kondisi Beban Puncak Afrianto; Mukhtar Hadi; Mietra Anggara; Imam Syaukani; Putri Indah Kencana
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 3 (2025): November 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i3.1320

Abstract

Penelitian ini bertujuan untuk mengevaluasi kinerja Pembangkit Listrik Tenaga Mikrohidro (PLTMH) Desa Tepal, Kabupaten Sumbawa, yang menggunakan turbin crossflow, khususnya pada kondisi beban puncak. Metode penelitian menggunakan pendekatan deskriptif kuantitatif melalui pengukuran langsung parameter hidrolik dan elektrikal, meliputi debit air, tinggi jatuh efektif, tegangan, arus, frekuensi, serta kondisi beban generator tiga fasa. Daya teoritis dihitung berdasarkan parameter hidrolik dan efisiensi komponen sistem, sedangkan daya aktual ditentukan dari hasil pengukuran tegangan dan arus generator. Hasil penelitian menunjukkan bahwa pada debit aktual sebesar 0,03 m³/detik diperoleh daya listrik teoritis generator sebesar 5,73 kW, sementara hasil pengukuran lapangan menunjukkan daya listrik aktual mencapai 19,1 kW pada kondisi beban puncak. Ketidaksesuaian yang signifikan antara daya teoritis dan daya aktual ini mengindikasikan adanya keterbatasan dalam estimasi debit serta pengaruh dominan karakteristik beban, ketidakseimbangan arus antar fasa, dan sistem kendali beban terhadap kinerja pembangkit. Jika dibandingkan dengan potensi daya berdasarkan debit desain turbin, PLTMH Desa Tepal belum beroperasi pada kondisi optimal. Hasil penelitian ini memberikan dasar evaluasi untuk perbaikan sistem kendali dan pengelolaan beban PLTMH agar operasi pembangkit lebih efisien dan andal.   This study aims to evaluate the performance of the Micro Hydropower Plant (MHP) in Tepal Village, Sumbawa Regency, which utilizes a crossflow turbine, particularly under peak load conditions. The research method employs a quantitative descriptive approach through direct measurements of hydraulic and electrical parameters, including water discharge, effective head, voltage, current, frequency, and the load conditions of a three-phase generator. The theoretical power is calculated based on hydraulic parameters and system component efficiencies, while the actual power is determined from measured generator voltage and current. The results show that at an actual discharge of 0.03 m³/s, the theoretical electrical power of the generator is 5.73 kW, whereas field measurements indicate that the actual electrical power reaches 19.1 kW under peak load conditions. The significant discrepancy between theoretical and actual power indicates limitations in discharge estimation as well as the dominant influence of load characteristics, phase current imbalance, and the load control system on plant performance. When compared to the power potential based on the turbine design discharge, the Tepal Village MHP has not yet been operating under optimal conditions. These findings provide a basis for evaluating improvements in the load control system and load management to ensure more efficient and reliable plant operation.  
Co-Authors A. Masniawati Abdul Malik Karim Aditya Syah Afrianto Ahmad Hidayat Ahmad Yamin Ajie Prana Mesa Aldrin Aldrin - Ali Topan, Paris Amri Hidayat Amri Hidayat Amriadi Amriadi Andi Dewi Rizka Ainulia Makerra Apandi Ardiansyah Ardila Tri Yuli Yanti Asia Arifin Ayudhia Gina Mawaddha Azrial Abizard Bahtiar, Syamsul Bernadus Crisanto Putra Mbulu Bernardus Crisanto Putra Mbulu Denny Widhiyanuriyawan Dery Sofya, Noura Dewa Putu Sukerta Yasa Dhanasmara, Hamratul Aisyah Dwi Ratna Sari Dzil Ikram, Fadhli Ekastini Ekastini Eva Johannes Fadhil Zil Ikram Fadhli Dzhil Ikram Fadhli Dzil Ikram Fadhli Dzil Ikram Fadhli Dzril Ikram Faris Zaiem Alhakiem Febrian, Wira Firda Utami, Silvia Fitriani Haizan Hamzah Naufal, Muhammad Hermanto, Koko Hidayah, Rini Nirmala Hidayat, Amri Iksan Wira Yuda Imam Munandar Imam Syaukani Irfan Maulana Irlan Ismiyarti, Wilia Jibril, Aburijal Juniansyah, Kallista La Ode Muhammad Syarif M. Faisal M.Rizal Fauzi Mahendry, Syahrul Manguntungi, Baso Mardinata, Erwin Mega Nur Sasongko Mhd Sunandar Siregar MMSI Irfan ,S. Kom Mohamedalmogtaba Abdelrahman Muh Jefri Muh. Chaerul Anwar Muhamad Hidayat Muhammad Al Fatih Muhammad Ilham S Muhammad Rizaldi Trias Jaya Putra Nurdin Muhammad Yaz Rasyid Mukhtar Hadi Murdiyanto, Danang Naif Fuhaid Naif Fuhaid Nikmal Hairul Nur Hilal A. Syahrir Nurmuliayanti Muis Nurwijayanti Nuryadi, Halid Pupung Pupung Pupung Putri Indah Kencana Rasyid, Muhammad Yaz Riana Anggraeny Ridwan Rita Desiasni Rizki Anjar Kusuma Robbani, Farisan Rohyanti, Sari Dewi Samanhudi, M. Syawqi Saputra, Widi Sarwana, Wirya Sastra Afriansa Sofya, Nora Dery Sopyan Ali Rohman Suparman Suparman Syamsiar, Syamsiar Syamsul Arifin Toni Dwi Putra Toni Dwi Putra Vivin Nila Rakhmatullah Wahyullah Wahyullah Widiasa, I Kadek Yuliadi Yuliadi Yuliadi Yuliadi Yusran Yusran Zainal Zaky Abdul Aziz