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All Journal Jurnal Fisika Unand JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Journal of Physics: Theories and Applications Spektra: Jurnal Fisika dan Aplikasinya Journal of Physics and Its Applications Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika MONSU'ANI TANO Jurnal Pengabdian Masyarakat Jurnal Teori dan Aplikasi Fisika INTEGRITAS : Jurnal Pengabdian BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Abdi Inovatif : Pengabdian kepada Masyarakat Indonesian Journal of Community Empowerment and Service
Afdhal Muttaqin
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Pengaruh Filter Lowpass Terhadap Kualitas Citra CT-Scan Paru-Paru Ulga, Sofhia; Muttaqin, Afdhal; Fitriyani, Dian
Jurnal Fisika Unand Vol 13 No 4 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.4.587-593.2024

Abstract

A low pass filter can be employed to enhance the quality of lung CT-Scan images by smoothing sharp transitions and reducing noise present in the images. The aim of this research is to implement a low pass filter by applying different weight values. The kernel weights applied in filtering using a low pass filter are 1/6, 1/9, 1/10, and 1/16. This study is a quantitative research employing 102 images. The findings of this study reveal that applying low pass filters with different kernel weights yields varying image qualities. Based on the quality tests of Mean Squared Error (MSE) and Peak Signal to Noise Ratio (PSNR), it was found that the kernel weight of 1/6 produces images with excellent quality at 17,65%, good quality at 28,93%, and fair quality at 53,92%. Meanwhile, with a kernel weight of the 1/9, 36,36% of the images were found to have good quality, while 64% exhibited lower quality. The application of a low pass filter with a kernel weight of 1/10 resulted in 39% of the images being of good quality and 61% of the images being of lower quality. At the kernel weight of 1/16, 2% of the images were obtained with excellent quality, 40% with good quality, and 58% with lower quality. Based on the MSE and PSNR test values, it was found that applying a kernel weight of 1/6 resulted in better image quality compared to applying other kernel weights. From the overall result, it was found that the application of a low pass filter was not suitable for improving the quality of CT-Scan images of the lung, so other methods could be applied to improve the quality of the images.
Pengabdian Untuk Meningkatkan Keterampilan Menyelesaikan Masalah Kinematika Pada Siswa Di Sma N 1 Gunung Talang Fardela, Ramacos; Adrial, Rico; Mardiansyah, Dedi; Muttaqin, Afdhal; Milvita, Dian; Usna, Sri Rahayu Alfitri; Firmawati, Nini; Oktamuliani, Sri; Irka, Feriska Handayani; Afdal, Afdal; Yusfi, Meqorry
Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Vol. 7 No. 1 (2024): Januari 2024
Publisher : STMIK Royal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33330/jurdimas.v7i1.2885

Abstract

Kinematika adalah cabang ilmu fisika yang fokus pada pemahaman gerakan benda, tanpa mempertimbangkan gaya yang berpengaruh padanya. Hal ini sering menjadi materi yang rumit bagi siswa di tingkat SMA, karena memerlukan pemahaman tentang konsep-konsep seperti kecepatan, percepatan, waktu, jarak, dan hubungan antara mereka. Universitas Andalas memiliki Program Studi S1 Fisika di bawah Departemen Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam. Setiap semster Departemen Fisika selalu mengadakan pengabdian kepada masyarakat sesuai dengan salah satu Tri Dharma Perguruan Tinggi. Salah satu pengabdian yang rutin dilakukan Departemen Fisika setiap semester adalah membina SMA di lingkungan Sumatera Barat. Pengabdian tentang pengayaan konsep kinematika di SMA dapat menjadi salah satu upaya yang sangat penting untuk membantu siswa mengatasi kesulitan dalam memahami konsep kinematika.  Pengabdian ini melibatkan mitra SMA N 1 Gunung Talang yang berada di Kabupaten Solok, Provinsi Sumatera Barat bertujuan untuk meningkatkan pemahaman siswa tentang Konsep Kinematika di SMAN 1 Gunung Talang. Pengabdian ini dilakukan dalam tiga tahap yaitu persiapan, kegiatan inti yaitu penyampaian materi dan evaluasi proses pengabdian. Hasil menunjukkan terjadi peningkatan pengetahuan tentang materi kinematika berdasarkan pembandingan hasil pre-test dan post test yaitu sebesar 33,3 %.
Karakterisasi Bolus Berbahan Campuran Beeswax dan Petroleum Jelly Menggunakan Berkas Elektron Pada Energi 6 MeV dan 9 MeV Rico Adrial; Desy Yulia Ningsih; Zhafirah Putri Fadhilah; Afdhal Muttaqin
Jurnal Teori dan Aplikasi Fisika Vol. 12 No. 1 (2024): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v12i1.341

Abstract

In radiotherapy cases of cancer on the surface of the skin generally use electron beams. The electron beam has not been able to provide the optimum surface radiation dose. Therefore, a material that is able to increase the dose of surface radiation is needed, which is called a bolus. This study tested a bolus made from a mixture of beeswax and petroleum jelly. The bolus test includes the determination of density, the value of Relative Electron Density (RED) and the determination of the absorbed dose. The absorbed dose value was obtained by irradiating using a Linear Accelerator (LINAC) at 6 MeV and 9 MeV energies. The RED value was obtained from the bolus tomography image using a CT-simulator by determining the Region of Interest (ROI). The bolus density values obtained from physical measurements using the TPS program have almost the same average density values. The RED bolus value obtained at a thickness of 0.2 cm to 0.8 cm has a lower RED value than the RED value of the breast, which is 0.976. However, at 1.0 cm thickness, the RED value is equivalent to breast tissue. The value of the absorbed dose in a bolus made from a mixture of beeswax and petroleum jelly, the thicker the bolus used, the smaller the increase in the absorbed dose. The results of this study indicate that a bolus made from a mixture of beeswax and petroleum jelly can be the choice of bolus material during radiotherapy.
Rekonstruksi Fantom Toraks Menggunakan Nilai Densitas Hounsfield Unit sebagai Fantom Alternatif untuk Verifikasi Dosis Radiasi Fiqi Diyona; Afdhal Muttaqin; Rhandyka Rafli
Jurnal Fisika Unand Vol 14 No 6 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.6.540-545.2025

Abstract

Phantoms play an essential role in medical physics, particularly for radiation dose verification, yet the high cost of commercial standard phantoms often limits their availability. This study aimed to reconstruct a thoracic phantom as a replica of the human chest cavity using simple and low-cost materials. The reconstruction process began with evaluating the density values of the selected materials: cadaver bone was used as a substitute for human bone, styrofoam for lung tissue, and plasticine for soft tissues such as muscle and fat. Density measurements showed that cadaver bone ranged from +350 HU to +1000 HU, styrofoam from –700 HU to –950 HU, and plasticine from +39 HU to +234 HU. The skeletal-based reconstruction successfully represented the anatomical alignment of thoracic organs, as confirmed by CT simulator imaging. These findings indicate that the reconstructed thoracic phantom provides a feasible and cost-effective alternative to expensive commercial phantoms and can be effectively utilized for radiation dose verification in medical physics applications.
Pembuatan Nanopartikel Zinc Oxide melalui Metode Sintesis Hijau menggunakan Ekstrak Daun Kersen (Muntingia calabura L.) Adinda Mahesa Putri; Sri Handani; Afdhal Muttaqin
Jurnal Fisika Unand Vol 15 No 4 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.15.4.389-396.2026

Abstract

This study aims to synthesize ZnO nanoparticles through a green synthesis approach utilizing Muntingia calabura L. leaf extract as a natural bioreducing and stabilizing agent. The green synthesis route was chosen for its environmental friendliness and sustainability compared to conventional chemical methods that rely on toxic reagents and high energy consumption. The Muntingia calabura leaf extract, rich in secondary metabolites such as flavonoids, polyphenols, and tannins, acted as reducing agents to convert Zn²⁺ ions into ZnO nanoparticles. The synthesis involved mixing various extract concentrations (5%, 10%, 15%) with 0.05 M zinc acetate dihydrate, followed by calcination at 600°C. UV-Vis spectra showed an absorption peak around 370 nm, confirming the formation of ZnO nanoparticles. XRD analysis indicated a hexagonal wurtzite crystal structure with an average crystallite size of 20–40 nm, while SEM revealed nearly spherical morphology with uniform distribution. FTIR confirmed the presence of –OH and C=O functional groups from phenolic compounds that acted as capping agents. These findings highlight the promising role of Muntingia calabura leaf extract as a sustainable biogenic source for ZnO nanoparticle synthesis.
Design of an X-ray plane prototype with Android-based absorption dose estimation calculation Ari Firmansyah; Afdhal Muttaqin
Journal of Physics: Theories and Applications Vol 9, No 1 (2025): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v8i2.94800

Abstract

The development of an android-based radiation dose estimation system for X-ray plane, which incorporates tube voltage and tube current settings, is anticipated to reduce costs and minimize radiation doses.  This prototype employs an X-ray tube with a single tank low-frequency specification and a tube current capability at high tension transform (HTT) of 10 mA, an exposition time of 0.1 s, and variations in tube voltage generated by 45 kV, 50 kV, and 60 kV. The prototyping phase encompasses the design of the hardware components, including the x-ray tube generator, voltage divider circuit, power supply, and Arduino Nano, which serves as the data processing unit. The software design employs the Skript programming language for deployment on Android and ESP32 devices. This involves the initial installation of the Blink application on Android via the Play Store. The prototype underwent a series of tests, including hardware testing, reproducibility testing, and peak voltage testing. Irradiation time testing and dose in microGray with the amount of CV passing at 0.05 (0.016) were also conducted. Additionally, software testing was performed to assess the accuracy, reproducibility, linearity, and dose estimation capabilities of the tube voltage settings.
WORKSHOP PENGUATAN KOMPETENSI SISWA SMA DI KOTA PADANG MENUJU OLIMPIADE SAINS NASIONAL (OSN) IPA DAN MATEMATIKA TINGKAT NASIONAL Mildawati Mildawati; Solfiyeni Solfiyeni; Mairawita Mairawita; Fuji Astuti Febria; Muhammad Samudra Ilham; Zulfi Zulfi; Yefrida Yefrida; Imelda Imelda; Afdhal Muttaqin; Narwen Narwen; Efendi Efendi; Mahdivan Syafwan
Jurnal Abdi Inovatif : Pengabdian kepada Masyarakat Vol. 3 No. 1 (2024): Jurnal Abdi Inovatif : Pengabdian kepada Masyarakat
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jai.v3i1.617

Abstract

The National Science Olympiad (OSN) is a prestigious event that involves the best students from various levels of education who have passed a rigorous selection at the district and provincial levels. One way to improve the quality of students in facing the OSN in Science and Mathematics is through structured coaching. The OSN Science and Mathematics Workshop held around the UNAND campus in Padang City is one such effort that has proven successful. The objectives of this workshop include three main aspects, namely improving the competence of high school students in basic science and mathematics, improving students' skills in solving OSN questions and improving the quality of high school education in Padang City. The workshop consisted of three main stages: planning, implementation, and evaluation. In the planning stage, OSN questions from the previous year were collected to be used as learning materials. The implementation stage involved a series of activities, including a pre-test, structured learning through lectures, question simulations, and discussions using audiovisual aids. The evaluation was conducted through a post-test to measure the improvement of students' understanding after attending the workshop. The results of this workshop showed a significant increase in the understanding of students who had participated from 30% to 60%. This illustrates the effectiveness of a sustainable and structured approach in improving student competencies to face OSN competitions in Science and Mathematics. This workshop could become a model for efforts to improve the quality of education in schools around the campus. It can be an inspiration for other educational institutions. Keywords: National Science Olympiad (OSN), Senior High School, workshop Abstrak Olimpiade Sains Nasional (OSN) adalah ajang prestisius yang melibatkan siswa-siswa terbaik dari berbagai tingkatan pendidikan yang telah melewati seleksi ketat di tingkat kabupaten dan provinsi. Salah satu cara meningkatkan kualitas siswa menghadapi OSN bidang IPA dan Matematika adalah melalui pembinaan terstruktur. Workshop OSN IPA dan Matematika yang diselenggarakan di sekitar kampus Universitas Andalas (UNAND) di Kota Padang adalah salah satu upaya yang telah terbukti berhasil. Tujuan dari workshop ini mencakup tiga aspek utama, yaitu meningkatkan kompetensi, keterampilan, dan mutu pendidikan siswa SMA dalam ilmu dasar IPA dan Matematika di Kota Padang. Workshop ini terdiri dari perencanaan, pelaksanaan, dan evaluasi. Pada tahap perencanaan, soal-soal OSN dari tahun sebelumnya dikumpulkan sebagai bahan pembelajaran. Tahap pelaksanaan, dilakukan pre-test, ceramah, simulasi soal, dan diskusi dengan peralatan audiovisual. Evaluasi dilakukan post-test untuk mengukur tingkat pemahaman siswa setelah workshop. Hasilnya, terjadi peningkatan signifikan dalam pemahaman soal OSN, yaitu dari 30% menjadi 60%. Hal ini menggambarkan efektivitas pendekatan berkelanjutan dan terstruktur dalam meningkatkan kompetensi siswa untuk menghadapi kompetisi OSN bidang IPA dan Matematika. Workshop semacam ini berpotensi menjadi model upaya peningkatan kualitas pendidikan di sekolah sekitar kampus dan dapat menjadi inspirasi bagi lembaga pendidikan lain. Kata Kunci: Olimpiade Sains Nasional (OSN), SMA, workshop
Co-Authors A. Fadhil Desafa Abda Abda Adinda Mahesa Putri Adrial, Rico Afdal Afdal Afdal Afdal Afdal Afdal, Afdal Ahmad Fauzi Pohan Alfian Darmawan Alimin Mahyudin Analia, Rika Anggi Anggi Anggi, Anggi Ari Firmansyah Arif Budiman Arif Budiman Astuti Astuti Astuti Betta Centaury Dahlianum, Dahlianum Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Delvihardini, Rani Desy Yulia Ningsih Dewi Fajriani Dian Fitriyani Dian Fitriyani Dian Milvita Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti EFENDI Eka Putra Sutantyo, Tringginas Eli Defira Elistia Liza Namigo, Elistia Elvaswer Elvaswer Elvaswer Emriadi - Fadillah Ahmad Faizah Faizah Faizah Faizah Fani Anjelina Febriati Nanda Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fifi Yunica Fifi Yunica Fiqi Diyona Fiqi Diyona Fiqi Diyona, Fiqi Fuji Astuti Febria Geby Sri Ayu Oktavia Haldis Alvaro Hamidah . Hamidah Hamidah Hanifah, Rahmatul Hanisti, Fidhia Harmadi Harmadi Haryanto Saputra Herviya, Herviya Herviyana, Herviyana Imam Taufik Imam Taufiq Imam Taufiq Imelda Imelda Isdi, Muhammad Ridho Iza Faizah Juniarti Juniarti Leony Chantika Leony Lestari, Tuti M. Ali Shafii Machmudah Mahdivan Syafwan Marzuki Marzuki Marzuki Marzuki Mega Roza Lia Meqorry Yusfi Mildawati Mildawati Mohammad Ali Shafii Mora Mora Mora Mora Mora Mora Muhammad Ilyas Muhammad Ilyas Muhammad Samudra Ilham Muldarisnur, Mulda Murdahayu Makmur Musra, Faizah Mutya Vonnisa Nanda, Febriati Narwen Narwen Nila Sriwahyuni Nila Sriwahyuni, Nila Nini Firmawati Nita Kurnia Sari Novelia Tohiri Nurhabibah Nurhabibah Nurhabibah Nurhabibah Nurul Annisa Nurwijayanti Oktavia, Amel Olly Norita Tetra Olly Norita Tetra Pratama, Teguh Nugraha Rahmad Rasyid Rahmad Rasyid Rahmat Rasyid Rahmatul Hanifah Rahmatul Hanifah Ramacos Fardela Rani Delvihardini Rena, Suci Ramda Rhandyka Rafli Ria Susmita Ridwan Ridwan Ridwan, Ridwan Rika Juniarti Waleza, Rika Juniarti Rully Mandela Rully Mandela, Rully Salim Muhaimin Saputra, Haryanto Sari, Nita Kurnia Sofhia Ulga Solfiyeni Solfiyeni Sri Handani Sri Oktamuliani Teguh Nugraha Pratama Tiya Lestari Tiya Lestari, Tiya Tohiri, Novelia Trengginas Eka Putra Trengginas Eka Putra Sutantyo Ulga, Sofhia Usna, Sri Rahayu Alfitri Viesca Fredilla Hanif Wildian Wildian Wildian Yefrida - Yunisa Oktaviani Yunisa Oktaviani, Yunisa Zhafirah Putri Fadhilah Zozy Aneloi Noli Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi