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All Journal BULETIN FISIKA Jukung (Jurnal Teknik Lingkungan) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan International Journal of Natural Science and Engineering Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pendidikan Fisika dan Teknologi EIGEN MATHEMATICS JOURNAL Kappa Journal Jurnal Pengabdian Inovasi Masyarakat Indonesia
Ramadian Ridho Illahi
Program Studi Fisika, FMIPA, Universitas Mataram
Agriculture, Biological Sciences & Forestry Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Workshop Analisis Kristalografi Dengan Metode Rietveld Menggunakan Aplikasi X’Pert Highscore Ramadian Ridho Illahi; Arif Budianto; Zahrah Ramadlan Mubarokah; Dian W. Kurniawidi; Siti Alaa; Teguh Ardianto; Susi Rahayu
Jurnal Pengabdian Magister Pendidikan IPA Vol 6 No 2 (2023): April-Juni
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v6i2.4463

Abstract

Final year students are required to have the ability to innovate, be creative, have personality, and develop independence in seeking and finding knowledge through realities and field dynamics such as ability requirements, real problems, social interaction, collaboration, self-management, as well as performance demands and achievement targets. In order for students' hard skills and soft skills to be formed strongly, it is felt necessary to provide additional skills, especially those that support the completion of the Final Project. Workshops on the use of the Originlab are quite urgent in research so as to speed up the completion of the Final Project (Thesis) for students interested in Materials. This software is commonly used to prepare XRD, FT-IR, UV-Vis and other spectra that are quite important in materials. In this explanation, a brief description of the XRD data preparation steps is described, starting from data input to quantitative and qualitative data analysis. Data analysis was carried out including determining the value of particle size, FWHM, crystal structure and lattice strain. Workshop participants totaled 20 students and were held for 7 days, from 7 to 15 May 2023 with details of 2 days offline, 1 day online via G-Meet and 4 days of mentoring.
PENGEMBANGAN SISTEM PENGUKURAN EMISI UDARA JENIS FINE PARTICLE SKALA PORTABLE UNTUK LABORATORIUM Arif Budianto; Susi Rahayu; Ramadian Ridho Illahi; Lalu Sahrul Hudha; Intan Utami
Jukung (Jurnal Teknik Lingkungan) Vol 9, No 2 (2023)
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v9i2.17574

Abstract

Emisi udara jenis fine particle tergolong partikel submikron yang berukuran sangat kecil dan sangat mudah untuk terhirup. Sistem pengukuran ataupun mitigasi emisi ini tergolong relatif mahal dan kurang portable. Oleh sebab itu, penelitian ini bertujuan untuk mengembangkan sebuah sistem portable yang relatif murah untuk pengukuran emisi udara jenis fine particle dalam ruang laboratorium. Sistem dirancang dengan sebuah sensor partikulat yang relatif murah namun memiliki performa yang baik. Sensor tersebut dihubungkan dengan sebuah mikrokontroler yang berfungsi memproses sinyal sensor. Sistem diuji di dalam area soldering laboratorium selama satu jam. Hasil penelitian menunjukkan bahwa ruang laboratorium, pada area soldering, memiliki konsentrasi fine particle antara 23 sampai dengan 463 µg/m3. Sistem ini memiliki performa yang baik, ditunjukkan dengan linearitas 99% dan akurasi lebih dari 90%. Hasil penelitian menyimpulkan bahwa sistem dapat mendeteksi sekaligus mengukur besar konsentrasi emisi udara jenis fine particle skala ruangan dengan rentang 0 – 999 µg/m3. Kata kunci: emisi, partikulat, polusi udara, sistem pengukuran
Membangun Komputer Kuantum dengan Foton: Algoritma Simulasi Sistem Kuantum Optik Linier Ramadian Ridho Illahi; I Wayan Sudiarta; Marzuki Marzuki; Arif Budianto; Dani Syirojulmunir
BULETIN FISIKA Vol 25 No 2 (2024): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2024.v25.i02.p07

Abstract

The evolution of quantum states on photons in linear optical systems has diverse applications, ranging from fundamental to advanced quantum optics experiments for quantum information processing. This research aims to develop a simulation algorithm that focuses on modeling optical elements as a way to study the behavior of quantum states in photons. An implementation of quantum computation with linear optics has been developed as part of the simulation in this research. The configuration of the quantum network is done by modeling optical components, such as beam splitters, phase shifters, and the relationships between their components through matrix representations. The measurement results are expressed in terms of probability distributions, taking into account the effects of the optical elements through which the photons are transmitted. The simulation is capable of performing calculations for basic quantum networks with certain initial quantum states. Through this simulation, we can define quantum networks and intuitively implement quantum algorithms using simple instructions.
Solution of The Duffing Equation Using Exponential Time Differencing Method Ramadian Ridho Illahi; Marzuki Marzuki; Lalu Sahrul Hudha
Eigen Mathematics Journal Vol 7 No 1 (2024): June
Publisher : University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/emj.v7i1.195

Abstract

To describe the spring stiffening effect that occurs in physics and engineering problems, Georg Duffing added the cubic stiffness term to the linear harmonic oscillator equation and is now known as the Duffing oscillator. Despite its simplicity, its dynamic behavior is very diverse. In this research, the Exponential Time Difference method is introduced to solve the Duffing oscillator numerically. To formulate the ETD method, we were using the integration factors. It is a function which, when multiplied by an ordinary differential equation, produces a differential equation that can be integrated. This method is an effective numerical method for solving complex differential equations, especially equations that have strong non-linearity The ETD method delivers highly accurate numerical solutions for the Duffing oscillator, with minimal discrepancy from the analytical results. Through parameter variation, the ETD method's applicability extends to diverse Duffing oscillator configurations.
Pembimbingan Penyelesaian Soal Tes Pengetahuan Kuantitatif dan Tes Penalaran Matematika Bagi Siswa Kelas XII SMAN 2 Selong Lombok Timur Marzuki, Marzuki; Teguh Ardianto; Rahadi Wirawan; I Wayan Sudiarta; Ramadian Ridho Illahi; Gusti Ayu Niatri; Kormil Saputra
Jurnal Pengabdian Inovasi Masyarakat Indonesia Vol. 3 No. 2 (2024): Edisi Agustus
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpimi.v3i2.5914

Abstract

Melanjutkan studi ke perguruan tinggi merupakan impian banyak tamatan SMA sederajat. Untuk mewujudkannya, calon mahasiswa harus mempersiapkan diri dengan belajar dan bekerja keras, terutama bagi mereka yang tidak lolos jalur SNBP (Seleksi Nasional Berdasarkan Prestasi) dan harus menghadapi tes UTBK (Ujian Tulis Berbasis Komputer). Program pengabdian ini bertujuan memberikan pengalaman kepada siswa kelas XII tentang bentuk dan tingkat kesulitan tes masuk Perguruan Tinggi Negeri (PTN) serta cara penyelesaiannya. Pengalaman ini membantu siswa mengukur kesiapan mereka dalam menghadapi UTBK sekaligus memotivasi mereka meningkatkan waktu, kualitas, dan kuantitas belajar. Pelaksanaan program terdiri atas tiga tahapan: persiapan, pelaksanaan, dan evaluasi. Kegiatan utama meliputi: (1) review konsep matematika dasar, (2) ujicoba tes pengetahuan kuantitatif dan penalaran matematika, serta (3) pembimbingan soal ujicoba oleh tim. Hasil ujicoba menunjukkan kemampuan siswa dalam pengetahuan kuantitatif dan penalaran matematik masih rendah. Namun, pembimbingan terstruktur meningkatkan pemahaman siswa, menyadarkan mereka akan banyaknya materi yang perlu dipelajari, dan mendorong semangat belajar. Program ini juga membantu siswa lebih memahami jurusan yang diminati. Direkomendasikan kepada pihak sekolah untuk memberikan pembinaan intensif kepada seluruh siswa guna meningkatkan peluang lulus seleksi masuk PTN.
Demonstrasi alat pemantauan konsentrasi PM (Particulate Matter) dan penyuluhan mitigasi kebencanaan terkait kualitas udara di SMAN 2 Selong, Kabupaten Lombok Timur Hadi, Kasnawi Al; Budianto, Arif; Alaydrus, Alfina Taurida; Rahayu, Susi; Akhyar, Halil; Illahi, Ramadian Ridho; Fidya, Karina Alma; Anggriani, Ni Ketut
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 4 (2024): December
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i4.28230

Abstract

AbstrakUdara yang berkualitas adalah udara yang bersih dan terbebas dari polusi. Beberapa contoh dari emisi udara yakni coarse dan fine particle yang tergolong dalam sub kelas PM. Belum seluruh sektor mengetahui jenis emisi udara ini dan kaitannya dengan kualitas udara. Oleh sebab itu, diperlukan sebuah sosialisasi yang disertai dengan penerapan teknologi tepat guna. Pengabdian kepada Masyarakat (PkM) ini dilaksanakan sebagai salah satu bagian dari Tri Dharma yang berbasis hasil penelitian tim peneliti kualitas udara dan mitigasi kebencanaan bersama SMAN 2 Selong, Kabupaten Lombok Timur sebagai mitra. PkM dilakukan dalam bentuk demonstrasi penggunaan alat pengukur konsentrasi emisi udara jenis PM hasil kolaborasi penelitian dosen dan mahasiswa di Program Studi Fisika, FMIPA, Universitas Mataram dengan tujuan mengenalkan kepada siswa terkait pentingnya menjaga kualitas udara. Peserta kegiatan adalah siswa sebanyak 20 orang. Metode yang digunakan dalam PkM adalah penyuluhan sederhana yang terintegrasikan dalam demonstrasi alat/kit. Kegiatan ini memberikan banyak manfaat bagi siswa dalam memahami dan mempraktekkan teori secara langsung. Melalui demonstrasi atau aplikasi alat peraga ini, siswa dapat melihat secara langsung pengukuran fisis dengan teknologi dan alat bantu teknologi, yang disertai dengan penyuluhan atau pemberian informasi terkait kualitas udara dan bentuk mitigasinya. Keterbatasan piranti-piranti pengukuran kualitas udara dapat disiasati dengan pengaplikasian alat ukur kualitas udara sebagai alat peraga secara langsung. Kegiatan ini memberikan manfaat bagi siswa dalam meningkatkan pemahaman secara langsung terkait kualitas udara dan mitigasi kebencanaan udara. Kata kunci: demonstrasi; kualitas udara; mitigasi kebencanaan; particulate matter. AbstractGood air is air that is clean and free from pollution. Some examples of air emissions are coarse and fine particles classified in the PM subclass. Not all sectors yet know about this type of emissions and their relationship to air quality. Therefore, socialization is needed, accompanied by the application of appropriate technology. This community service (PkM) was conducted as part of Tri Dharma, which is based on the research results of the air quality and disaster mitigation research team with SMAN 2 Selong, East Lombok Regency as a partner. PkM was carried out in the form of a demonstration of the use of a PM-type air emission concentration measurement system resulting from collaborative research between lecturers and students at the Physics Study Program, FMIPA, University of Mataram, to introduce students to the importance of maintaining air quality. The participants were 20 students. The method used in PkM was simple counseling integrated into tool/kit demonstrations. This activity provides many benefits for students in terms of directly understanding and practicing theory. Through demonstrations or applications of these teaching aids, students can directly see physical measurements using technology and technological aids, accompanied by counseling or providing information related to air quality and forms of mitigation. The limitations of air quality measurement devices can be overcome by using air quality measuring instruments as a direct demonstration tool. This activity provides benefits for students in increasing direct understanding regarding air quality and air disaster mitigation. Keywords: demonstration; air quality; disaster mitigation; particulate matter.
A Development of a Coarse Particle Concentration Measurement System Using a Crystal-Based Sensor and a Dust Sensor for Air Quality Measurement Arif Budianto; Susi Rahayu; Laili Mardiana; Ramadian Ridho Illahi; Rosita Juniarti
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 10 No 1 (2024): January-June
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v10i1.6692

Abstract

QCM or quartz crystal microbalance is a non static crystal that can be used as a mass sensor. As a piezoelectric crystal, a QCM generates an electrical signal with a specific frequency. The frequency change can be utilized as a frequency counter in a mass measurement system. This study aims to develop a coarse particle sensor system using a QCM and an oscillator circuit. In line with this, this study uses an oscillator circuit and a QCM for a sensor development. Thus, the frequency measurement of the QCM contains an oscillator and a signal conditioner connected to a microcontroller. For this purpose, an Arduino Nano was used as the signal processing, while a QCM was used as a coarse particle sensor and compared to a digital dust sensor (Winsen ZH03). The sensor system was evaluated using a fixed-type crystal connected to an oscillator: 2.5 MHz - 7.2 MHz. Arduino Nano processed the frequency signal generated by the developed oscillator. The results show that the sensor system has a stable output signal compared to the comparator. There is a linear correlation between the frequency measured by the system and the oscilloscope (99.73%). It can be concluded that the sensor system can measure coarse particle concentrations from 32-620 ug/cm3 (frequencies from 2 MHz to 7.2 MHz) with a response time of 1 second. The system has an accuracy of 99% and a resolution of 1 Hz.
Isolasi Kitosan dari Cangkang Kerang Mutiara (Pinctada maxima) Menggunakan Deasetilasi Dengan Gelombang Mikro Rahayu, Susi; Destrianingtyas, Aulia Safitri; Ridho Illahi, Ramadian; Kurniawidi, Dian W.
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.27166

Abstract

Kitosan merupakan biopolimer turunan dari hasil deasetilasi kitin, yang berkembang pesat di dunia medis saat ini. Kitosan salah satu material yang memiliki sifat anti mikroba, biokompatibel, dan biodegradable sehingga aman bagi tubuh manusia. Penelitian ini dilakukan untuk mengidentifikasi pengaruh daya gelombang mikro terhadap karakteristik kitosan. Pembuatan kitosan dengan mengisolasi kitosan dari cangkang kerang Mutiara (Pinctada maxima sp) melalui proses deproteinasi, demineralisasi, dan deasetilasi. Kitosan di analisis gugus fungsi, derajat deasetilasi, rendemen, berat molekul, dan struktur kristalnya. Pada tahapan deasetilasi mengunakan NaOH 60%. Hasil penelitian menunjukkan bahwa pemberian gelombang mikro dengan daya high selama 5 menit memperoleh nilai derajat deasetilasi tertinggi 83,40%, rendemen akhir sebesar 8,2%, dan berat molekul 222.185,94 Da, serta memiliki derajat kristalinitas sebesar 59,09%. Derajat deasetilasi kitosan meningkat seiring dengan naiknya daya gelombang mikro sedangkan berat molekul yang dihasilkan berbanding terbalik dengan derajat deasetilasi.
Automated Wildlife Recognition Using OpenCV for Conservation at Rinjani National Park Handayana, I Gusti Ngurah Yudi; Sudiarta, I Wayan; Setiawan, Budi; Hadi, Islamul; Marzuki, Marzuki; Huda, Lalu Sahrul; Angraini, Lily Maysari; Illahi, Ramadian Ridho
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.101773

Abstract

This study presents the design and validation of an AI-based camera-trap system for wildlife monitoring at the border of Rinjani National Park, Indonesia. The system uses the YOLOv4 framework integrated with OpenCV to detect long-tailed macaques (Macaca fascicularis) in real-time. A total of 269 annotated images were used, including 202 for training, 17 for validation, and 50 for testing. The model was trained using Google Colaboratory and achieved a detection accuracy of 92.83%. Image pre-processing and labeling were conducted via Roboflow, and the model was optimized for potential deployment on a Raspberry Pi platform. Although physical deployment was not conducted, the system design supports low-power embedded implementation for field use. The results indicate that the proposed method can reliably detect camouflaged and partially occluded monkeys, suggesting its potential for mitigating human–wildlife conflict through smart conservation technology.
Co-Authors Akhyar, Halil Alaa, Siti Alfina Taurida Alaydrus Anggriani, Ni Ketut Arif Budianto Arif Budianto Arif Budianto Budi Setiawan Dani Syirojulmunir Destrianingtyas, Aulia Safitri Dian W. Kurniawidi Fidya, Karina Alma Gusti Ayu Niatri Hadi, Kasnawi Al Handayana, I Gusti Ngurah Yudi Huda, Lalu Sahrul I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta Intan Utami ISLAMUL HADI Kormil Saputra Kurniawidi, Dian W. Laili Mardiana Lalu Sahrul Hudha Marzuki Marzuki Marzuki Marzuki Rahadi Wirawan Rosita Juniarti Susi Rahayu Teguh Ardianto, Teguh Zahrah Ramadlan Mubarokah