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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) International Journal of Reconfigurable and Embedded Systems (IJRES) ComEngApp : Computer Engineering and Applications Journal Jurnal Rekayasa Mesin Jurnal Energi Dan Manufaktur AUSTENIT Jurnal Mechanical Proceeding of the Electrical Engineering Computer Science and Informatics Science and Technology Indonesia Prosiding Seminar Nasional Teknoka Indonesian Journal of Electrical Engineering and Computer Science Prima Abdika: Jurnal Pengabdian Masyarakat Indonesian Journal of Engineering and Science (IJES) Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Bulletin of Applied Mathematics and Mathematics Education Jurnal Pelita Sriwijaya Prosiding Seminar Nasional Unimus Cognitia : International Engineering Journal
Irsyadi Yani
Department Of Mechanical Engineering, Faculty Of Engineering, Sriwijaya University, Palembang, 30139, Indonesia
Aerospace Engineering Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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PENGUATAN LITERASI SAINS MELALUI PENGENALAN METODE STATISTIKA UNTUK DATA HILANG Kresnawati, Endang S.; Resti, Yulia; Dewi, Novi R.; Yani, Irsyadi; Marwani, Marwani
Jurnal Lentera Nusantara Vol 4 No 1 (2025): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v4i1.181

Abstract

Kemampuan literasi sains yang baik berkontribusi secara signifikan terhadap kemajuan bangsa. Sebagai generasi penerus, sepatutnya siswa Sekolah Mengengah Atas (SMA) dibekali banyak pengetahuan guna meningkatkan literasi sains yang mereka miliki termasuk dalam menangani data atau pengamatan yang hilang, mengingat saat ini merupakan era big data. Kegiatan pengabdian yang dilaksanakan ini bertujuan mengenalkan metode-metode statistika dalam mengatasi data hilang. Pengetahuan ini diharapkan dapat menguatkan literasi sains siswa SMA Kartini Palembang, yang merupakan sekolah swasta yang berada sekitar 1 km di belakang kampus Universitas Sriwijaya. Sekolah ini memiliki akreditasi B dan fokus untuk peminatan IPA. Berdasarkan pra-test dan post-test terkait pengetahuan dasar tentang metode statistika dalan menangani daa hikang, hasil kegiatan menunjukkan bahwa literasi sains dan numerasi khalayak sasaran meningkat signifikan. Uji beda rata-rata kedua kelompok nilai pra-test dan post-test dengan tingkat signifikansi 5 % untuk khalayak sasarn menunjukkan bahwa kedua kelompok memiliki perbedaan yang signifikan, Hasil ini juga menginfomasikan bahwa rata-rata nilai post-test secara signifikan mengalami peningkatan. Artinya kegiatan kegiatan pengabdian kepada masyarakat ini memberikan implikasi yang signifikan terhadap peningkatan kemampuan literasi dan numerasi mereka.
Demonstrasi Gasifikasi Tempurung Kelapa pada Masyarakat Desa Vidian, Fajri; Fitriani, Heni; Arief, Taufik; Alian, Helmy; Yani, Irsyadi; Hadi, Qomarul; Thamrin, Ismail; Zulkarnain, Zulkarnain; Manik, Dion Daud; Rasyid, Abdul; Simarmata, Johanes; Situmeang, Abetnego; Paroluan, Brian Einstein; Doloksaribu, Mikael
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2024): Volume 4 Nomor 1 Tahun 2024
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v4i1.3716

Abstract

The dedication to this activity was prompted by the lack of awareness about the potential use of coconut shells as gas fuel, like LPG, in Tebing Gerinting Selatan Village, as well as in Ogan Ilir Villages in general. The main aim of this activity is to educate the community in Tebing Gerinting Selatan on the technology of converting coconut shells into gas fuel using gasification technology. The educational process includes presentations, demonstrations, and discussions. During the demonstration phase, participants were shown how to operate coconut shell gasification equipment to produce gas fuel. The results of this activity were very encouraging as many participants showed a keen interest in the process and equipment used during the discussion phase. Based on the success of this activity, it can be concluded that there is a high level of public interest in coconut shell gasification technology, and there is a strong desire to apply this equipment to the kerupuk kemplang grilling process in the village.
BESARAN ENERGI AKTIVASI DARI OKSIDASI HASIL PENGECORAN ALUMINIUM KALENG MINIMUM YANG MENDAPAT PERLAKUAN PANAS QUENCHING DAN ANNEALING Nukman, Nukman; Dahlan, Muhammad; Firdaus MS, Firdaus M S; Yani, Irsyadi; Arifin, Amir
AUSTENIT Vol. 11 No. 2 (2019): AUSTENIT: Oktober 2019
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (561.212 KB)

Abstract

Thermogravimetry analyzer adalah suatu alat untuk melakukan analisa thermal dimana massa bahan uji akan berbanding terbalik atau berbanding lurus dengan laju temperatur yang meningkat dan fungsi waktu (temperatur meningkat konstan). TGA biasanya digunakan untuk menentukan karakteristik material. Kurva naiknya massa material Aluminium dapat digunakan untuk mengetahui oksidasi. Titik naiknya massa material bisa digunakan untuk menghitung energi aktivasi. Penelitian ini menggunakan alat Thermogravimetry Analyzer (TGA) Exstar SII 7300 dengan 3 (tiga) sampel yang berbeda yaitu: Sampel Non Heat Treatment, Sampel Quenching, Sampel Annealing.  Hasil pengujian didapatkan bahwa energi aktivasi pada keadaan temperatur 400-6500C ramp 10 pada sampel non heat treatment E = 30,137 kJ/mol. Pada quenching E = 23,537 kJ/mol. Pada annealing E = 28,373 kJ/mol.
BIOCOMPATIBLE P(TM co SA-CAA) HYDROGELS WITH pH RESPONSIVE AND ENHANCED MECHANICAL PERFORMANCE Gustini, Gustini; Kaprawi, Kaprawi; Basri, Hasan; Irmawan, Irmawan; Yani, Irsyadi; Paramita Eka Utami, Nurhabibah
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.7536

Abstract

In recent years, development of hydrogel that combines biocompatibility, pH responsive and mechanical performance has attracted the attention of researchers. A novel biocompatible hydrogel, composed of P(TM co SA) and P(TM co CAA) was synthesized by a simple admixture and heating process. The results show that with increasing levels of SA-CAA monomer concentration, an increase in tensile strength and elongation at breakpoint was observed and optimal at the ratios P(TM co SA CAA). Tensile strenght and young’s modulus registered an impressive increase of 43% and 40% respectively. These improvements are attributed to strong synergistic hydrogen bonding interactions between the TM and SA-CAA chains. During the experiment, maximum increase in weight was also achieved at pH 10 NaOH solution, it is show the pH-responsive hydrogels. The investigation of P(TM co SA-CAA) hydrogel mechanism showed that more homogenous dispersed through crosslinks dominated by β-sheets from Amide I structures. Furthermore, the SA-CAA molecules contributed to the biocompatibility, pH responsive and mechanical performance of P(TM co SA-CAA) hydrogels. Conclusively, its P(TM co SA-CAA) hydrogels clearly demonstrated the relevance of the provide a bioresponsive material for biomedical applications, such as tissue engineering, regenerative medicine and pH-sensitive drug delivery.
IMPLEMENTASI 3D PRINTING DALAM PEMBELAJARAN TEKNIK DI SMK YPK GAJAH MADA PALEMBANG Arifin, Amir; Saputra, M. A. Ade; Yani, Irsyadi; Prakoso, Akbar Teguh; Gunawan, Gunawan; Basri, Hasan; Zahir, Muhammad; Thamrin, Ismail; Astuti, Astuti
Jurnal Lentera Nusantara Vol 4 No 2 (2025): Jurnal Pelita Sriwijaya: In Progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v4i2.203

Abstract

Perkembangan teknologi pada era Revolusi Industri 4.0 menuntut lulusan Sekolah Menengah Kejuruan (SMK) memiliki kompetensi di bidang manufaktur berbasis digital, salah satunya teknologi 3D printing tipe fused deposition modeling (FDM). Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pemahaman dan keterampilan guru SMK YPK Gajah Mada Palembang dalam merancang dan mengoperasikan mesin cetak 3D serta memanfaatkannya sebagai media pembelajaran teknik. Metode yang digunakan diawali dengan survei kebutuhan dan wawancara untuk memetakan pengetahuan awal dan kesiapan guru terhadap teknologi 3D printing, dilanjutkan dengan pelatihan terstruktur yang mencakup pengenalan perangkat lunak CAD, proses slicing menggunakan Ultimaker Cura, pengaturan parameter pencetakan, hingga praktik langsung mencetak produk sederhana seperti komponen transmisi dan gantungan kunci. Evaluasi dilakukan melalui kuesioner dan wawancara setelah pelatihan. Hasil kegiatan menunjukkan bahwa peserta memperoleh pemahaman yang baik terhadap alur kerja 3D printing, merasa cara penyampaian dan isi materi mudah diikuti, serta 70% guru menyatakan akan mencoba menerapkan 3D printing sebagai media pembelajaran di kelas. Selain itu, penyerahan satu unit mesin cetak 3D kepada sekolah mendukung keberlanjutan implementasi teknologi ini. Secara keseluruhan, program pelatihan efektif dalam memperkuat kompetensi guru dan mendorong integrasi teknologi manufaktur aditif dalam pembelajaran teknik di SMK.
Performance Analysis and Optimization of an Ammonia Stripper through Scrubber Integration Using Industrial Data and Aspen Hysys Simulation Susmanto, Prahady; yani, Irsyadi; Bahrin, David; Maharani, Asty; Anggraini, Suci
Cognitia : International Engineering Journal Vol. 2 No. 1 (2026): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v2i1.16

Abstract

The stripping gas from the ammonia stripper still shows fluctuating ammonia (NH₃) content and, under certain conditions, has the potential to exceed the targeted limit. This study discusses the evaluation of the ammonia stripper output gas and efforts to reduce NH₃ levels by adding a scrubber unit as a further treatment using Aspen HYSYS V.11 simulation. However, previous studies have primarily focused on ammonia removal within the stripper unit under steady-state conditions, with limited investigation into the integration of scrubber systems to handle fluctuating industrial wastewater and steam flow conditions. Operational performance was evaluated using industrial data collected during August 6–10, 2025, by calculating NH₃ removal efficiency based on inlet–outlet concentrations, followed by Aspen HYSYS simulation using the Extended NRTL model to analyze the effect of wastewater flow rate and assess the optimization process through scrubber integration. The evaluation results show that before the addition of the scrubber, the NH₃ reduction efficiency in the ammonia stripper was in the range of 87.78–96.34% with an average value of 92.97%, but under conditions of high wastewater discharge, the NH₃ concentration in the stripping gas still increased. Scrubber integration simulations showed that the NH₃ concentration in the stripper exhaust gas decreased from 3.21% to 0.96%, equivalent to a reduction of approximately 70%, indicating significant emission optimization. These results indicate that the addition of a scrubber to the stripped gas is an effective alternative to control NH₃ emissions.
Classification of weather events in Lahat regency using the K-Nearest Neighbor method Kresnawati, Endang Sri; Resti, Yulia; Eliyati, Ning; Zayanti, Des Alwine; Dewi, Novi Rustiana; Yani, Irsyadi
Bulletin of Applied Mathematics and Mathematics Education Vol. 5 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/bamme.v5i2.14613

Abstract

Weather event classification in a region is very important for various purposes, such as in the fields of transportation, health, agriculture, and others. Lahat has varying land elevations ranging from 26-106 meters above sea level in the East Merapi sub-district to 341-3032 meters above sea level in the Tanjung Sakti Pumi sub-district. It greatly affects local temperature, rainfall, and atmospheric pressure, which in turn affects the distribution of weather patterns and disasters such as floods. KNN is a prediction method that uses the concept of distance for a number of k nearest observations in determining the similarity between observations. Several metrics can be used for this prediction purpose. This study aims to predict weather events in Lahat Regency using the KNN method with several different distance metrics and then compare them to obtain the performance of the KNN prediction method. The results show that the Euclidean distance metric used in the KNN method has a better performance measurement, followed by the Manhattan and Minkowski metrics. In the Euclidean metric, the accuracy, precision, recall, f1-score, AUC, and MC value are 92.69%, 88.21%, 85.81%, 86.99%, 88.99%, and 76.37%, respectively.
Co-Authors Abdul Rasyid Ade Silvia Ade Silvia Ade Silvia Handayani Agung Mataram Ahmad Irham Jambak Akbar Teguh Prakoso Ali Amran Ali Syahbana Alwine Zayanti, Des Amir Arifin Amir Arifin Amir Arifin Amrifan Saladin Mohruni Aneka Firdaus Anggraini, Suci Ansyori Ansyori Ansyori Ansyori Ansyori Yani Anthony Costa Astuti - Astuti Astuti ASTUTI ASTUTI Bambang Suprihatin Barlin Barlin BARLIN BARLIN Barlin Barlin Barlin Oemar Chandra Irsan Chandra Irsan Chandra Irsan David Bahrin Dendy Adanta Des Alwine Zayanti Des Alwine Zayanti, Des Alwine Des Alwine Zayantii Dewi Puspita Sari Dewi Puspitasari DEWI PUSPITASARI Dewi Puspitasari Dewi, Novi R. Dewi, Tresna Diah Kusuma Pratiwi Doloksaribu, Mikael Donny Sahala Tua Sitorus Eka Utami, Nurhabibah Paramitha Ekawati Prihatini Ellyanie Ellyanie Endang Sri Kresnawati Eric Rahman Fadhian Fadhillah Siregar Fajri Vidian Falah Yuridho Firdaus MS, Firdaus M S Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Gunawan Gunawan Gunawan Gunawan Gunawan Gunawan Gunawan GUNAWAN GUNAWAN Gustini, Gustini Hasan Basri helena astari Helmy Alian Heni Fitriani Hoiri, Sajiril Husni, Nyayu Latifah Husni, Nyayu Latifah Indah Meiliana Sari Irmawan Irmawan Ismail Thamrin Ivfransyah Jeremy Firdaus Latif Jhosua Arie S Jhosua Arie Swandi Kaprawi Kaprawi Kresnawati, Endang S. Lugantha Perkasa M. A. Ade Saputra M. A. Ade Saputra M.A. Ade Saputra Maharani, Asty Manik, Dion Daud MARWANI Marwani Marwani, Marwani Mega Fatimah Rosana Mega Tiara Putri MS, Firdaus Muflika Amini Muhammad Dahlan Muhammad Yanis Muhammad Yanis Muhammad Zahir Ning Eliyati Nova Yuliasari Novi Rustiana Dewi Novi Rustiana Dewi Nukman Nukman Nukman NUKMAN NUKMAN NURHABIBAH PARAMITHA EKA UTAMI Nyayu Latifah Husni Nyayu Latifah Husni, Nyayu Latifah Paramita Eka Utami, Nurhabibah Paroluan, Brian Einstein Qomarul Hadi Rahmayani, Mau’izatil Resnawati Rossi Passarella Saputra, M. A. Ade Saputra, M.A. Ade Setyo Cahyono, Endro Simarmata, Johanes Siti Nurmaini Situmeang, Abetnego Sri Kresnawati, Endang Sugandi Yahdin Sulong, Abu Bakar Susmanto, Prahady Taufik Arief Tresna Dewi Yulia Resti Zayanti, Des A. Zulkarnain Ali Leman Zulkarnain Zulkarnain Zulkarnain Zulkarnain