Article Per Year (5 Year)
p-Index From 2020 - 2025
4.092
P-Index
This Author published in this journals
All Journal Jurnal Fisika Unand SEMIRATA 2015 Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Buletin Ilmiah Nagari Membangun Jurnal Ilmu Fisika Indonesian Journal of Electrical Engineering and Computer Science BERNAS: Jurnal Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Indonesian Community Journal Makara Journal of Technology Indonesian Journal of Community Empowerment and Service
Meqorry Yusfi
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT 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 Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

Published : 55 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 55 Documents
Search

 1   2   3   4   5 
Analisis Sensitivitas Sensor GY-ML8511 dalam Deteksi Formalin M Farhan Ramadhan; Meqorry Yusfi; Harmadi Harmadi
Jurnal Fisika Unand Vol 13, No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.684-689.2024

Abstract

Food safety is a crucial aspect in meeting people's nutritional needs. Formalin, a dangerous preservative, is often used illegally to extend the shelf life of foodstuffs, posing serious risks to consumer health. This research develops a portable technology for rapid detection of formaldehyde in foodstuffs. The method utilizes the interaction between UV light and the concentration of formaldehyde in a sample treated with Schiff reagent, enabling the measurement of UV uptake proportional to formaldehyde concentration. The Schiff reagent reacts with formalin to produce a colored compound whose absorbance is measured to detect and quantify formalin in the sample. The designed optical system focuses on measuring the intensity of light from a UV LED source, which is then transmitted through the sample. The successfully transmitted light intensity is converted into an electrical signal by the GY-ML8511 sensor, which is then processed by the NodeMCU ESP8266 to display the concentration of formalin on the LCD screen. This research also analyzes the sensitivity and selectivity of the GY-ML8511 sensor to evaluate its performance and reliability in detecting formaldehyde, with the ultimate goal of improving food safety through innovative detection technologies, such as the use of biosensors and advanced spectroscopy. This technology contributes to existing solutions by enabling rapid and accurate detection at various stages of food production, thereby reducing the risk of contamination and improving compliance with food safety standards
Light absorption enhancement in organic solar cell using non-concentric Ag:SiO2 core-shell nanoparticles Muldarisnur, Mulda; Fahendri, F.; Perdana, Ilham; Abdullah, Zulfi; Yusfi, Meqorry
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1076

Abstract

Low solar energy conversion efficiency prevents the widespread of organic solar cells; hence, metal nanoparticles have been used to overcome this problem without increasing cell thickness. We investigated light absorption enhancement in view of the embedment of Ag:SiO2 core-shell nanoparticles of different shell thicknesses, core offsets, offset orientation angles, and vertical mismatches between neighboring particles. The simulations were carried out using the finite element method. This is the first investigation in the use of asymmetric nanoparticles. At optimized conditions, absorption enhancement up to 345% compared to the one without the nanoparticles could be achieved. The enhancement was found much higher than that of the published values. The enhancement results were mainly from the increase of near-field localization and scattering in the active layer of solar cells due to the excitation of Fano resonances. The resonance occurred due to the non-symmetric nature of the core-shell nanoparticles.
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 %.
Sistem Pemantauan Slot Parkir Menggunakan Sensor Ultrasonik JSN-SR04T dan Pengenalan Plat Nomor Kendaraan dengan ESP32-CAM Khairina Auliya; Meqorry Yusfi; Rahmat Rasyid
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.534-540.2023

Abstract

A parking slot monitoring system prototype has been produced using the JSN-SR04T ultrasonic sensor and vehicle license plate recognition with ESP32-CAM. The system was created to make it easier for motorists to monitor the availability of parking slots remotely by utilizing Telegram which is connected to the ESP32-CAM module and Arduino Mega 2560. The ultrasonic sensor detects the distance of vehicles entering or exiting the parking lot, then a servo motor opens the entry and exit bars. Vehicle users can monitor the availability of parking slots on the Telegram bot. In each slot there is an ultrasonic sensor that detects the distance so that it can find out whether there is a vehicle in the slot. The test results show that the ultrasonic sensor has an average error percentage of 0.65%. The parking barrier can be opened when the ultrasonic sensor detects the presence of a vehicle at the entrance or exit and the ultrasonic sensor can detect the presence of a vehicle according to the conditions in the slot. The system is equipped with vehicle license plate character recognition using the Optical Character Recognition (OCR) method. Through the ESP32-CAM module camera webserver, the OCR program can detect vehicle plates with the furthest distance of 140 cm using video resolution (400x296) and 300 cm using video resolution (1600x1200). The OCR program can read the vehicle plate characters correctly and the results for the number of characters obtained correspond to the license plate being tested, then the vehicle plate data is stored in the database
Perancangan Sirkulasi Bahan Pustaka Secara Otomatis Menggunakan Sensor RFID dan Motor Servo Putri Berlian Hasibuan; Meqorry Yusfi
Jurnal Fisika Unand Vol 13 No 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.2.183-189.2024

Abstract

Telah dilakukan perancangan sistem sirkulasi bahan pustaka otomatis menggunakan sensor RFID dan motor servo yang terhubung dengan website. Sistem ini mampu melakukan identifikasi data pengunjung serta buku yang ada pada perpustakaan. RFID digunakan sebagai sensor yang dapat membaca kartu ID anggota perpustakaan yang telah didaftarkan sebagai anggota. Data yang dibaca akan tersimpan pada basis data dan ditampilkan pada layar LCD. Motor servo sebagai pengunci pintu pada rak buku khusus akan terbuka saat menggunakan kartu anggota. Kemampuan RFID dalam membaca kartu anggota adalah  1 cm, LCD juga dapat menampilkan data yang dibaca oleh RFID, dan motor servo dapat bergerak tanpa kendala. Sistem ini menggunakan NodeMCU ESP32 sebagai mikrokontroler sebagai pengontrol sistem. Sistem juga memiliki website yang digunakan untuk menampilkan data pada basis data agar dapat dipahami dengan mudah.
Sistem Pemantauan serta Pengendalian Suhu dan PH Air Berbasis Arduino Uno pada Pendederan Udang Vaname Afdal Primanandra; Meqorry Yusfi; Rahmat Rasyid
Jurnal Fisika Unand Vol 13 No 3 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.3.322-328.2024

Abstract

Kualitas air merupakan aspek yang sangat menentukan keberhasilan budidaya udang vaname. Kualitas air yang diperhatikan diantaranya adalah suhu dan pH air. Penelitian ini menghasilkan sistem yang melakukan pemantauan serta pengendalian terhadap suhu dan pH air pada pendederan udang vaname dengan memanfaatkan sensor dan aktuator. Sensor yang digunakan adalah sensor DS18B20 sebagai pendeteksi suhu dan sensor pH-4502C sebagai pendeteksi pH air, sedangkan aktuator yang digunakan adalah relay, pompa air untuk mengaliri pH up atau pH down ke tambak, heater untuk menaikan suhu dan fan untuk menurunkan suhu air. Data suhu dan pH air yang terdeteksi oleh sensor diteruskan ke mikrokontroler untuk diproses lalu ditampikan pada LCD serta menyalakan aktuator jika suhu dan pH air tidak sesuai dengan ketentuan yang diberikan. Hasil yang didapat pada penelitian ini yaitu sebuah sistem yang dapat memantau serta mengendalikan suhu dan pH air dengan persentase kesalahan sensor DS18B20 sebesar 1,19% dan sensor pH-4502C sebesar 1,23%. Nilai yang didapatkan setiap sensor ditampilkan pada LCD, serta menyalakan pompa air jika 7 > pH > 8,5, heater jika suhu < 28°C dan fan jika suhu > 30°C. Hasil ini mengindikasikan bahwa sistem yang dirancang berfungsi dengan baik untuk memantau serta mengendalikan suhu dan pH air pada pendederan udang vaname
Penerapan Metode Short Time Fourier Transform (STFT) dalam Menentukan Frekuensi Dasar Alat Musik Talempong Minangkabau Fachri Hernanda; Meqorry Yusfi
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.677-683.2024

Abstract

At this research has determined the fundamental frequency of talempong musical instruments using the Short Time Fourier Transform (STFT) method. The research is divided into three stages, namely recording dataset retrieval, method implementation and base frequency analysis. In this research, sound recordings of talempong are collected into a dataset which is divided into several frequencies and then synthesized using the STFT methods then synthesized using the STFT method to determine the frequency of the talempong sound signal to determine the frequency of the talempong sound signal. The frequency value from the STFT process is then compared with the general base frequency to determine the percentage of accuracy of the talempong sound synthesis. From this research, the results obtained average error value of 4,39% and an accuracy percentage of 95,61%.
Analisis Sensitivitas Sensor GY-ML8511 dalam Deteksi Formalin M. Farhan Ramadhan; Meqorry Yusfi; Harmadi Harmadi
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.684-689.2024

Abstract

Food safety is a crucial aspect in meeting people's nutritional needs. Formalin, a dangerous preservative, is often used illegally to extend the shelf life of foodstuffs, posing serious risks to consumer health. This research develops a portable technology for rapid detection of formaldehyde in foodstuffs. The method utilizes the interaction between UV light and the concentration of formaldehyde in a sample treated with Schiff reagent, enabling the measurement of UV uptake proportional to formaldehyde concentration. The Schiff reagent reacts with formalin to produce a colored compound whose absorbance is measured to detect and quantify formalin in the sample. The designed optical system focuses on measuring the intensity of light from a UV LED source, which is then transmitted through the sample. The successfully transmitted light intensity is converted into an electrical signal by the GY-ML8511 sensor, which is then processed by the NodeMCU ESP8266 to display the concentration of formalin on the LCD screen. This research also analyzes the sensitivity and selectivity of the GY-ML8511 sensor to evaluate its performance and reliability in detecting formaldehyde, with the ultimate goal of improving food safety through innovative detection technologies, such as the use of biosensors and advanced spectroscopy. This technology contributes to existing solutions by enabling rapid and accurate detection at various stages of food production, thereby reducing the risk of contamination and improving compliance with food safety standards
Rancang Bangun Sistem Pemantauan Dosis Radiasi Sinar Gamma di Bawah Permukaan Air Menggunakan Pencacah Geiger-Muller Secara Nirkabel Berbasis Labview Adhitya Firmansyah; Meqorry Yusfi; Mohamad Nur Yahya
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.806-812.2024

Abstract

Utilization of various radioactive sources in Indonesia, including nuclear fuel, nuclear waste, and radioactive minerals, has significantly increased to support research, industry, and healthcare services. This usage necessitates an evaluation of environmental impacts, particularly the increase in background radiation in the context of radioecology. Radionuclides like cesium, which are highly soluble in water, can be released into marine waters through leaks from nuclear power plants, radioactive waste, and military weapons tests, potentially harming marine ecosystems and the food chain. Therefore, periodic monitoring of underwater radiation exposure is crucial. This study aims to develop a gamma-ray radiation dose monitoring system underwater using a wireless Geiger-muller counter and LabVIEW-based interface. The system comprises a Geiger-muller counter for measuring radiation doses, an nRF24l01+ module for data transmission, and a LabVIEW application as the display panel. Testing was conducted by submerging a radioactive cesium source into a water tank with varying distances and depths. Radiation data were measured by the Geiger-muller counter, transmitted via the nRF24l01+ to the receiver, processed by Arduino Uno, and displayed in LabVIEW. The LabVIEW application also provides alerts if the dose exceeds the threshold and records the dose values. Test results showed the lowest measurement success rate of 17% at position 7 and the highest of 30% at position 1.
Upaya Penanggulangan Stunting di Nagari Kapuh, Pesisir Selatan: Edukasi Gizi dan Perubahan Perilaku Yayuk Lestari; Meqorry Yusfi; Annisa Anindya; Vitania Yulia; Diego Diego
I-Com: Indonesian Community Journal Vol 4 No 4 (2024): I-Com: Indonesian Community Journal (Desember 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v4i4.5683

Abstract

Stunting is a serious public health issue in Indonesia, especially at Nagari Kapuh, Koto XII Tarusan District, Pesisir Selatan region of West Sumatera. The survey results revealed that 32 out of 59 children are experiencing stunting. This condition is influenced by several factors, including poor nutritional intake, limited capacity of posyandu (community health post) volunteers and the damaged medical equipment. Addressing this issue requires a holistic and collaborative approach. Efforts include providing education on balanced nutrition, training posyandu volunteers to improve their monitoring and nutrition counseling skills. Improving healthcare facilities and encouraging participation are also crucial steps in combating stunting in this area. It is hoped that through strong collaboration between various stakeholders—including, village authorities, and relevant institutions—the stunting rate in Nagari Kapuh can be significantly reduced. This program aims both to lower the prevalence of stunting and to improve the overall quality of life for the community.
Co-Authors A. Fadhil Desafa Adhitya Firmansyah Adrial, Rico Adwina, Amelia Ramadhani Afdal Afdal Afdal Afdal, Afdal Afdal Primanandra Afdhal Muttaqin Ahmad Fauzi Pohan Alawiya, Tuti Alimin Mahyudin Annisa Anindya Annisa Anindya Arif Budiman Astuti Astuti Astuti - Astuti Astuti Astuti Astuti Astuti Astuti Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Della Amelia Desri, Siska Laila Dian Fitriyani Dian Fitriyani Dian Fitriyani Dian Milvita Diego Diego Diego Diego Diego, Diego Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Elistia Liza Namigo, Elistia Elvaswer Elvaswer Elvaswer Fachri Hernanda Fachri Hernanda Fahendri, F. Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fiqi Diyona Frima Gandi Frima Gandi Haldis Alvaro Hariza Faisal Harmadi Harmadi Harmadi Harmadi Hendra Saputra Herlina Nainggolan Heru Sagito Palka Heru Sagito Palka Ilham Perdana Imam Taufik Imam Taufiq Imam Taufiq Iqbal Ramadhan Iqbal Ramadhan Irsyad, Rashid Muarif Isdi, Muhammad Ridho Juwita Safitri Khairiati Husni Khairina Auliya Lestari, Yayuk M Farhan Ramadhan M. Ali Shafii M. Farhan Ramadhan Marzuki Marzuki Marzuki Marzuki Mohamad Nur Yahya Mohammad Ali Shafii Mora Mora Muhammad Arif Muhammad Arif Muhammad Iqbal Muhammad Kahfi Muhammad Kahfi Muhammad Nurul Rahman Muldarisnur, Mulda Mutya Vonnisa Naela Amalia Zulfa Naela Amalia Zulfa Nini Firmawati Novi Elian Nurul Hasanah Olly Norita Tetra Primas Emeraldi Puspita, Nabilla Putri Putra, Al Hamid Putri Asriya Putri Berlian Hasibuan Putri Puspita, Nabilla Rahmat Rasyid Rahmat Rasyid Ramacos Fardela Ramadhan, M. Farhan Rasyid, Rahmad Rini Anggriani Solly Aryza Sri Handani Sri Oktamuliani Sumariadi - Suprijadi Suprijadi Trengginas Eka Putra Trengginas Eka Putra Sutantyo Triati Dewi Kencana Wungu Usna, Sri Rahayu Alfitri Veithzal Rivai Zainal Vitania Yulia Wildian Wildian Wilka Putra, Wilka Yasmin, Syaza Zozy Aneloi Noli Zulfi Zulfi Zulfi Abdullah