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Yesung Allo Padang
Universitas Mataram
Aerospace Engineering Automotive Engineering Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics

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Pemanfaatan Energi Alternatif Dan Terbarukan Yesung Allo Padang; Mirmanto Mirmanto Mirmanto; Syahrul Syahrul Syahrul; Sinarep Sinarep Sinarep; Pandri Pandiatmi Pandiatmi
JURNAL KARYA PENGABDIAN Vol 2, No 2 (2020): Oktober, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.465 KB)

Abstract

Sosialisasi pemanfaatan energi alternatif dan terbarukan harus ditanamkan sejak dini kepada generasi muda. Mereka harus sadar bahwa kita tidak bisa terus mengandalkan sumber energi dari bahan bakar fosil karena jumlahnya saya sangat terbatas dan tiap waktu kian berkurang. Kita harus memanfaatkan sumber daya lain yang ada di sekeliling kita dan tersedia sangat melimpah. Diantara sumber energi tersebut adalah biogas, biomassa dan energi surya.Biogas adalah gas yang berasal dari aktifitas dekomposisi/pembusukan zat organik oleh bakteri anaerob. Komponen utama biogas adalah metana (CH4) dan karbondioksida (CO2). Gas lainnya seperti H2S merupakan zat pengotor yang seharusnya dikurangi atau dihilangkan sama sekali dalam proses produksi biogas. Energi biomassa adalah energi dari zat organik yang dimanfaatkan tanpa merubahnya menjadi gas. Contoh energi biomassa adalah tempurung kelapa; dapat dibakar secara langsung atau terlebih dulu dijadikan briket untuk dimanfaatkan kemudian. Sementara itu energi dari matahari dapat dimanfaatkan secara langsung maupun tidak langsung. Penggunaan secara langsung seperti untuk menjemur produk pangan dan memanaskan air untuk mandi. Sementara secara tidak langsung yaitu diubah dulu menjadi energi listrik dengan teknik solar cell ataupun solar concentrator.Adapun kelompok generasi muda yang menjadi target dalam pengabdian ini adalah siswa siswi kelas III SMAN1 Sumbawa Besar. Meski hanya menampilkan gambar dan video tentang biomassa, biogas dan energi matahari, para peserta sangat antusias mengikuti materi yang diberikan. Hal ini dapat dilihat dari respon mereka ketika sesi tanya jawab. Pertanyaan yang berbobot diajukan para peserta diantaranya teknik penggunaan energi matahari, pembuatan biogas serta perbedaan biomassa dan biogas. Adapula yang menginginkan agar dilakukan demo penggunaan energi alternatif tersebut. Akan tetapi keterbatasan waktu dan peralatan tentunya tak bisa kami lakukan, namun saran tersebut akan kami tampung agar menjadi pertimbangan pada kegiatan sejenis berikutnya.
PENYULUHAN PERAWATAN MESIN PENGGILING PERAK DI JEN’S SILVER DUSUN AMPAN LOLAT DESA UNGGA PRAYA BARAT DAYA LOMBOK TENGAH. i dewa ketut okariawan; Yesung Allo Padang; Tri Rachmanto; Sugiman Sugiman; Salman Salman
JURNAL KARYA PENGABDIAN Vol 4, No 1 (2022): April, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

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Abstract

ABSTRAKDesa Ungga, Kecamatan Praya Barat Daya, Lombok Tengah, adalah salah satu sentra kerajinan perak. JEN’S Silver UKM yang bergerak dibidang kerajinan perak. Adapun permasalahan yang dihaapi oleh UKM yaitu ketidak pahaman mereka dalam pengoprasian dan perawatan mesin penggiling perak yang mereka miliki. Dengan adanya permasalahan ini maka perlu diadakan perbaikan sistem dan penyuluhan mengenai perawatan mesin penggiling perak di UKM tersebut. Adapun tahap pelaksannan kegiatan ini yaitu 1. perancangan dan pembuatan kontrol arah putaran mesin penggiling perak 2. Penyuluhan perawatan mesin penggiling perak dimana keberhasilannya dihitung dengan skala likert. Hasil yang didapat dari kegiatan ini adalah dengan sistem kontrol arah putaran mesin penggiling perak maka pengoprasiannya menjadi lebih mudah dan sangat aman. Dengan penyuluhan terjadi peningkatan pengetahuan mengenai komponen dan perawatan mesin yaitu paling tinggi terjadi pada point pelumas gemuk dan pemakaiannya adalah sebesar 60 % dan paling rendah terjadi pada point roll perak yaitu 20 %.Kata Kunci : Sitem konrol arah putaran, penyuluhan, skala likert ABSTRACTUngga Village, Southwest Praya District, Central Lombok, is one of the silver handicrafts. JEN’S Silver UKM which is engaged in silver handicrafts. The problems faced by UKM are their lack of understanding in the operation and maintenance of their silver rolling machines. With this problem, it is necessary to improve the system and provide counseling regarding the maintenance of silver rolling machines in these UKM. The stages of implementing this activity are 1. designing and making control of the direction of rotation of the silver rolling machine 2. Counseling on the maintenance of silver rolling machines where success is calculated with a Likert scale. The result of this activity is that by controlling the direction of rotation of the silver rolling machine, its operation becomes easier and very safe. With counseling there was an increase in knowledge about machine components and maintenance, the highest occurred at the point of grease lubricant and its use was 60% and the lowest occurred at the silver roll point, which was 20%.Keywords: rotation direction control system, counseling, Likert scale
Alat Press Hidraulik Pada Industri Rumah Tangga Pembuatan Tahu Jawa Di Dusun Karang Kelok, Mataram Nurchayati Nurchayati; Hendry Sakke Tira; Yesung Allo Padang; Rudy Sutanto; Suteja Suteja
JURNAL KARYA PENGABDIAN Vol. 5 No. 1 (2023): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v5i1.145

Abstract

In Karang Kelok hamlet, West Monjok, Mataram, there are currently 2 Home Industries (IRT) that make tofu and are known as Javanese tofu. Because the texture is different from the Lombok tofu in general, this tofu is in great demand by the wider community. So the demand in every day is very much. One of them belongs to Tin's mother. This IRT is able to absorb 3 workers. Every day able to spend 60 kg of soybeans. In producing the tofu, this IRT still uses the traditional method, especially when pressing the tofu is still done by overlapping 1-3 pieces of stone with different weights. Pressing in this way has weaknesses, including security and work safety issues. This condition is also one of the obstacles to be able to produce more tofu products. This pressing is done one by one and in a row, so it also takes up a wider area. Based on these problems, it is necessary to plan and manufacture hydraulic system tofu pressing tools so that the resulting product increases. The purpose of this service is to get a smaller time and area for pressing in the tofu-making process. The method used is to socialize the use of a hydraulic system tofu press. The results obtained are that this tofu press tool can shorten the average pressing time of 4 minutes and reduce the working area of pressing from 3 meters to 1 meter. And it can also reduce the risk of work accidents due to the fall of the crushing stone.  
Pelatihan Penggunaan Geogebra untuk Meningkatkan Pemahaman Matematika Pada Mahasiswa Baru Jurusan Teknik Mesin Unram Nurchayati, Nurchayati; Hendry Sakke Tira; Yesung Allo Padang; Nurpatria, Nurpatria; Arif Mulyanto
JURNAL KARYA PENGABDIAN Vol. 7 No. 1 (2025): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v7i1.209

Abstract

Some mathematical objects are abstract. Psychological studies state that children learn concrete things more easily than abstract things. The problem of lack of understanding of mathematical material, especially geometry, both two-dimensional and three-dimensional, also occurs among students. For this reason, the solution offered is training in using Geogebra software to display two- and three-dimensional geometry visually and more realistically. So it can be easier to understand. And this needs to be given to new students as preparation for taking the next lecture at Mechanical Engineering, Mataram University. The implementation of this service is divided into several stages. The first is the preparation of practical instructions for operating Geogebra and questionnaires. Provide tests to measure understanding of basic mathematical concepts, both before and after training. Provide a questionnaire to determine learning motivation before participating in training. Next, provide training on using the Geogebra application/software in solving mathematical problems to participants. Apart from that, participants were also given a questionnaire to find out whether this training was useful for participants and whether this training could motivate participants to learn after attending the training. From the results of observations during the training, the participants were very enthusiastic about taking part, as evidenced by the responses from the participants, both those who asked questions and those who answered the instructor's questions regarding the answers to the questions given. The results of the questionnaire showed that by using Geogebra software it was easier and faster for participants to solve the questions. geometry questions, and there was also an increase in scores before and after training.
Alat Pembelah Bambu untuk Meningkatkan Produksi Tusuk Sate di Kelompok Sepakat Bersama, Bengkaung, Batulayar, Lombok Barat Nurchayati, Nurchayati; Yesung Allo Padang; Hendry Sakke Tira; Nurpatria, Nurpatria; Suteja, Suteja
JURNAL KARYA PENGABDIAN Vol. 7 No. 2 (2025): Oktober, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v7i2.201

Abstract

Semenjak awal tahun 2022 tepatnya pada bulan Maret, pemerintah Republik Indonesia mulai melonggarkan aturan Covid-19. Dampak positif dari hal tersebut adalah kondisi wisata di Lombok mulai menggeliat lagi. Banyak wisatawan yang mulai berkunjung ke wilayah lombok, NTB. Sehingga perekonomian juga berangsur-angsur membaik. Seiring dengan bangkitnya sektor pariwisata ini, usaha kuliner juga mulai tumbuh lagi. Beberapa kuliner yang terkenal di Lombok adalah Sate Rembiga, sate pusut, sate ikan tanjung dan sate bulayak. Untuk membuat berbagai macam jenis sate ini tentunya sangat membutuhkan tusuk sate. Dusun Seraya desa Bengkaung kecamatan Batu Layar Lombok Barat merupakan salah satu daerah penghasil tusuk sate. Produksi tusuk sate di daerah ini masih dikerjakan dengan alat tradisional. Universitas Mataram sebagai salah satu perguruan tinggi negeri di kota Mataram yang memiliki sumber daya tenaga ahli dan gudangnya ilmuwan sudah seharusnya menunjukkan peran dan partisipasinya untuk peduli terhadap usaha kecil yang ada disekitar kampus. Jarak kelompok usaha tusuk sate ini tidak terlalu jauh dari Universitas Mataram, sekitar 10 km. Berdasarkan permasalahan tersebut maka diperlukan untuk memberikan penyuluhan dan pengenalan alat bantu agar produksi tusuk sate yang dihasilkan menjadi meningkat. Alat yang diaplikasikan ini adalah alat pembelah bambu, yang mampu meningkatkan produksi tusuk sate. Sebelumnya pekerja dalam membelah satu potong bambu, membutuhkan beberapa kali proses pembelahan. Setelah menggunakan alat pembelah bambu ini dapat dikerjakan lebih cepat. Satu kali proses pembelahan sepotong bambu menggunakan alat pembelah bambu ini menghasilkan 10 bilah bambu, yang artinya jauh lebih banyak dibandingkan dengan yang dilakukan selama ini oleh pekerja. Hasil Evaluasi pada saat penyuluhan dapat dikatakan berhasil dengan terlihat semangatnya peserta penyuluhan dalam mempraktekkan penggunaan alat ini. Kata kunci: pembelah bambu, tusuk sate
Penguatan Kesadaran Lingkungan Masyarakat melalui Penyuluhan Pengolahan Sampah Organik menjadi Kompos di Desa Perian, Kabupaten Lombok Timur Humairo Saidah; I Wayan Yasa; I Dewa Gede Jaya Negara; Hasyim; Rohani; I Dewa Made Alit Karyawan; Salehudin; Muh Bagus Budianto; Tri Rachmanto; Nur Chayati; Yesung Allo Padang
Jurnal Pengabdian Magister Pendidikan IPA Vol 9 No 2 (2026): April-Juni 2026
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v9i2.15744

Abstract

Perian Village, located in Montong Gading District, East Lombok Regency, is a tourism village with considerable natural potential that should be supported through sustainable environmental management. One of the challenges faced by the community is household waste management. Household waste is generally collected and transported for disposal, creating a burden on the village government, which has limited financial resources and waste management facilities. Meanwhile, a large proportion of the waste generated consists of organic materials that can be utilized as a valuable resource through composting. This community service program aimed to enhance community knowledge and awareness of organic waste management and encourage the conversion of organic waste into compost. The program was conducted on January 23, 2026, at the Perian Village Sports Hall using an educational outreach approach consisting of lectures, discussions, and question-and-answer sessions. The topics covered included waste-related issues, the impacts of improperly managed waste on public health and the environment, the benefits of organic waste management, and simple household-scale composting techniques. Program evaluation was carried out through observation of participant engagement and responses during the activity. The results showed a highly positive response from the participants. Community enthusiasm was reflected in the high attendance rate and active participation in discussions. Participants demonstrated an improved understanding of the importance of organic waste management and the benefits of composting. They also expressed their commitment to sorting and processing household organic waste into compost. The program successfully increased public awareness of compost-based organic waste management. To ensure long-term sustainability, follow-up assistance and hands-on composting activities are recommended at the community level.
Mudah Matematika Dengan Geogebra di SMKN 1 Pringgabaya Lombok Timur Nurchayati Nurchayati; Yesung Allo Padang; Sugiman Sugiman; Henry Sake Tira; Nurpatria Nurpatria; Husnul Wafa
JURNAL KARYA PENGABDIAN TEKNIK MESIN Vol. 8 No. 1 (2026): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v8i1.236

Abstract

Beberapa obyek matematika bersifat abstrak. Kajian psikologis menyatakan bahwa anak akan lebih mudah mempelajari hal yang konkrit dibandingkan yang abstrak. Kurangnya minat, motivasi belajar dan dasar konsep matematika membuat siswa SMKN 1 Pringgabaya mengalami kesulitan dalam memahami matematika terutama konsep yang abstrak. Untuk mengatasi hal tersebut, teknologi pembelajaran berbasis aplikasi seperti software Geogebra dapat menjadi solusi efektif. Dengan penggunaan Geogebra ini dimaksudkan agar pembelajaran menjadi interaktif, lebih nyata dan menyenangkan sehingga materi akan lebih mudah dipahami, yang berakibat meningkatkan motivasi belajar. Sebelum pelaksanaan pelatihan, siswa diberikan soal untuk mengukur pemahaman konsep dasar matematika dan juga diberikan kuisioner. Selesai pelatihan peserta diberikan soal dan kuisioner untuk mengetahui motivasi belajar sebelum dan sesudah mengikuti pelatihan dan juga untuk mengetahui apakah pelatihan ini bermanfaat bagi peserta . Dari hasil pengamatan pada saat pelaksanaan pelatihan peserta sangat antusias mengikutinya, terbukti dengan adanya respon dari peserta baik yang bertanya ataupun yang menjawab pertanyaan instruktur terkait jawaban dari soal yang diberikan Dari hasil kuisioner menunjukkan bahwa dengan menggunakan software Geogebra peserta lebih mudah dan cepat dalam menyelesaikan soal-soal geometri, dan juga terdapat peningkatan skor nilai sebelum dan sesudah pelatihan. Kata kunci: Matematika, Geometri, Geogebra, SMKN 1 Pringgabaya
Optimalisasi Sistem Pemanasan Bahan Bakar MFO Melalui Penerapan Pipa Bypass Exhaust di PLTD Paokmotong Agra Ananda Vigarya Putra; Yesung Allo Padang
JURNAL KARYA PENGABDIAN TEKNIK MESIN Vol. 8 No. 1 (2026): April, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v8i1.246

Abstract

PLTD Paokmotong uses Marine Fuel Oil (MFO) as the main fuel due to its economic advantage; however, MFO requires a reliable heating system to ensure proper operation. Operational constraints occurred due to limited utilization of exhaust gas heat caused by restricted Heat Recovery Thermal Oil (HRTO) system availability, resulting in reduced flexibility of the MFO heating process and increased use of High Speed Diesel (HSD). This community service activity aims to optimize the MFO fuel heating system through the implementation of an exhaust bypass pipe at PLTD Paokmotong. The method employed a technology insemination and appropriate technology upgrade approach, including system observation, exhaust bypass pipe implementation, and operational performance evaluation of the heating system. The results indicate that the exhaust bypass pipe improves the reliability and flexibility of the MFO heating system, accelerates fuel changeover from HSD to MFO, and maintains stable fuel temperature during power plant operation. Keywords : PLTD, MFO, HRTO, exhaust bypass pipe, community service
Performance of an Air-Water Harvester Machine under Various Inlet Air Relative Humidity Conditions Mirmanto Mirmanto; Made Wirawan; Faniar Reza Khatami; Arif Mulyanto; Yesung Allo Padang; Nurchayati Nurchayati; Jayus Kharisma Hendra
Jurnal Rekayasa Mesin Vol. 21 No. 2 (2026): Volume 21, Nomor 2, Agustus 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

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Abstract

Atmospheric water harvesting (AWH) using vapor-compression refrigeration systems has emerged as a promising approach for decentralized freshwater production. Although previous studies have investigated the effects of refrigeration-system configurations and operating parameters on water production, the influence of inlet air relative humidity on freshwater productivity, heat-transfer characteristics, and thermodynamic performance has not been comprehensively evaluated within a single experimental framework. This study experimentally investigates the performance of an air-water harvester operating at inlet relative humidities of 30%, 50%, and 70% under controlled laboratory conditions. Freshwater production, coefficient of performance (COP), total heat absorbed by the evaporator, and evaporator efficiency were evaluated using measurements of temperature, pressure, airflow velocity, electrical power consumption, and psychrometric properties. The results show that increasing inlet relative humidity significantly enhanced condensation and system performance, yielding the highest freshwater production of 0.345 kg and the maximum COP of 12.19 at 70% RH. In contrast, the highest evaporator efficiency (11.89%) and total heat absorbed by the evaporator (167.81 W) were obtained at 30% RH, where sensible heat transfer dominated the cooling process. The findings indicate that inlet air relative humidity strongly influences the distribution of sensible and latent heat transfer, thereby affecting both freshwater production and energy performance. This study provides an integrated experimental assessment of the thermodynamic response of refrigeration-based AWH systems to varying inlet humidity and offers practical guidance for optimizing system operation in humid tropical environments.
Co-Authors Agra Ananda Vigarya Putra Ahmad Zainuri Z Anak Agung Alit Arif Mulyanto Emmy Dyah Sulistiowaati Emmy Dyah Sulistyowati Faniar Reza Khatami Hasyim Hendry Sakke Tira Hendry Sakke Tira, Hendry Sakke Henry Sake Tira Humairoh Saidah Husnul Wafa I Dewa Gede Jaya Negara I Gede Bawa Susana I Made Nuarsa I Wayan Yasa I.D.K. Okariawan Ida Bagus Alit Jayus Kharisma Hendra Karyawan, I Dewa Made Alit M. Helmi M. Mirmanto, M. Made Wirawan Mas'ud Mas'ud Muh Bagus Budianto Muhammad Dienullah Najamuddin Najamuddin Nasmi Herlina Sari Nur Chayati Nurchayati Nurchayati Nurchayati Nurchayati Nurpatria Nurpatria Nurpatria Nurpatria Nurpatria Nurpatria Nurpatria Nurpatria, Nurpatria Pandri Pandiatmi Pandri Pandiatmi Pandiatmi Rohani Rudy Sutanto S. Sinarep S. Syahrul Salehudin Salman Salman Salman Salman Salman Salman Salman Salman Salman Sinarep Sinarep Sinarep Sinarep Sinarep Sugiman . Sugiman Sugiman Suteja Suteja Suteja Suteja, Suteja Syahrul Syahrul Syahrul Syamsul Arifin Tri Rachmanto Tri Rachmanto