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All Journal BIOCHEPHY: Journal of Science Education Journal of Experimental and Applied Physics
Sari, Mona Berlian
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Control & Systems Engineering Education Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

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Design and Construction of a Mathematical Pendulum Harmonic Motion Experiment System Using Arduino Based E18-D80Nk Proximity Sensor Mulyadi, Endri; Asrizal, Asrizal; Amir, Harman; Sari, Mona Berlian
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.68

Abstract

Experimentation is part of the stages of the scientific method that has a big role to test a phenomenon that occurs. One of the physics lessons proven through experiments is the harmonic motion of a mathematical pendulum. One of the problems with the existing experimental equipment is the variation in rope length and the manual measurement of rope length. One solution to overcome this problem is to create a Mathematical Pendulum Harmonic Motion Experiment System Using the Arduino-based E18-D80NK Proximity Sensor. This tool is designed to facilitate practitioners when conducting experiments and save practicum time. Research was conducted to determine the accuracy and precision of the tool. The experimental results of the device can be displayed on the LCD.  The precision and accuracy of the experimental system with the following details: Average error of 0.65% for comparison of system t value and standard t and average error of 0.55% for comparison of system gravitational acceleration value with theoretical gravitational acceleration for variation of rope length. As for the average value of accuracy of 0.9990583 or 99.9% for a fixed rope length, and the average accuracy of 0.99793367 or 99.7% for a fixed number of oscillations.
Compact Spectrophotometer Using TEMT600 Sensor for Protein Concentration Measurement Matondang, Anggun Sisri Br.; Yulkifli, Yulkifli; Mairizwan, Mairizwan; Sari, Mona Berlian
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.74

Abstract

A simple spectrophotometer utilizing a white LED light source (520 nm wavelength) and a TEMT600 light sensor has been successfully developed to measure the concentration and absorbance of protein solutions. This device demonstrated an impressive average measurement accuracy of 96.26% for concentration and 95.97% for absorbance, making it highly effective for protein analysis. Despite its reliability, certain deviations were observed in the measurement results, primarily attributed to unpredictable environmental fluctuations and suboptimal sample preparation. These factors contributed to an average deviation of 3.74% for concentration and 4.25% for absorbance. While these deviations are relatively minimal and within an acceptable range, they highlight areas for potential improvement in future designs. Nevertheless, the tool is considered suitable for accurately measuring protein solution concentration and absorbance, proving its capability for laboratory or educational purposes. Its simplicity and cost-effectiveness make it a valuable device for routine protein analysis
Simulation of Silicon-Rubber and Boric Acid Composite Type Neutron Shields Thermal Absorpstion Efficiency Using NGCal Software Junita, Novia; Sari, Mona Berlian; Yulkifli, Yulkifli; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.75

Abstract

Perisai neutron termal merupakan suatu struktur atau material yang memegang peranan penting dalam proteksi radiasi neutron termal untuk menghindari dampak negatif dari paparan radiasi secara langsung, baik terhadap lingkungan maupun kesehatan manusia. Pada penelitian ini, digunakan silikon-karet sebagai material utama perisai neutron, sedangkan asam borat berfungsi sebagai penyerap neutron termal, sehingga keakuratan informasi mengenai sifat redaman dan proteksi perisai neutron yang dirancang menjadi sangat penting. Beberapa parameter perisai radiasi yang harus dievaluasi dalam menentukan kinerja material perisai neutron yang difabrikasi antara lain faktor redaman massa, faktor redaman linier, dan lapisan nilai setengah. Perangkat lunak komputasi NGCal digunakan untuk mensimulasikan sifat dan parameter material perisai. Berdasarkan perhitungan yang dilakukan, dapat disimpulkan bahwa perisai dengan efisiensi tinggi adalah perisai dengan penggunaan rasio sorben yang lebih tinggi yaitu asam borat, sedangkan apabila rasio karet silikon lebih besar dari asam borat maka tingkat efisiensi penyerapan menurun, tetapi fleksibilitas mekanis perisai akan semakin baik. Ketebalan perisai neutron berhubungan langsung dengan nilai MAC dan LAC, dimana semakin tebal perisai maka nilai MAC dan LAC akan semakin tinggi, hal ini menyebabkan efisiensi penyerapan neutron termal oleh perisai neutron akan semakin meningkat apabila asam borat mendominasi pada komposit, namun apabila ketebalan perisai didominasi oleh karet silikon maka efisiensinya akan semakin menurun.
Design of Servo-Controlled Titrant Flux Regulation System Zulma, Degito; Sari, Mona Berlian; Yohandri, Yohandri; Darvina, Yenni
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.82

Abstract

The advancement of automation in laboratory instrumentation has significantly transformed the field of chemical analysis by enhancing precision, efficiency, and reproducibility. The development of an advanced titrant flux regulation system presents substantial potential benefits. This research focuses on the design of a Titrant Flux Regulation System utilizing a Servo Motor and PCA9685 Driver for Automated Titrators, with the aim of improving the accuracy of titration processes. The system employs a servo control mechanism driven by the PCA9685 driver to precisely maneuver the burette crank. The methodology encompasses system design, simulation, prototyping, and performance testing. A microcontroller-controlled servo motor ensures precise movements of the burette crank, enabling accurate titrant delivery. The developed prototype demonstrates the ability to regulate titrant flow with high precision, facilitating fine-tuned control of titrant volume to meet specific titration requirements. The servo and PCA9685-based system shows significant promise for application in automated titrators, offering enhanced accuracy and control of titrant flow, thereby optimizing the titration process.
Systematic Literature Review of TCS34725 Sensor Applications in Various Fields Anisa, Widya; Sari, Mona Berlian; Yohandri, Yohandri; Asrizal, Asrizal
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.83

Abstract

The TCS34725 sensor, recognized for its precise color detection across the visible spectrum, is essential in agriculture, food safety, healthcare, security, and industry. As automation advances, reliable color detection systems are crucial for replacing subjective and inconsistent manual assessments. However, challenges such as varying lighting conditions and the need for advanced data processing techniques impact its accuracy and integration. Enhanced algorithms and machine learning applications enable real-time analysis, reducing human error and ensuring reliable results. The sensor's versatility supports applications such as monitoring crop ripeness, detecting harmful substances in food, and aiding medical diagnostics like urine analysis. This study conducts a systematic literature review to explore trends, advancements, and gaps in the sensor's applications. Findings emphasize its role in advancing Industry 4.0 by digitizing processes, fostering sustainable innovations, and improving operational efficiency, reliability, and quality of life.
RANCANG BANGUN SISTEM KUALITAS TELUR AYAM RAS BERBASIS INTERNET OF THINGS UNTUK TRANSFORMASI DIGITAL PETERNAKAN Putri, Sylvia Delfi Mardiana; Yulkifli, Yulkifli; Sari, Mona Berlian; Susalam, Malikil Kudus
BIOCHEPHY: Journal of Science Education Vol. 5 No. 2 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kualitas telur ayam ras merupakan faktor penting yang menentukan nilai jual dan daya saing produk peternakan. Namun, metode pengujian yang umum digunakan masih bersifat manual dan destruktif, sehingga kurang efisien untuk skala besar. Penelitian ini bertujuan merancang sistem pendeteksi kualitas telur berbasis Internet of Things (IoT) dengan sensor non-destruktif yang terintegrasi model machine learning. Sistem prototype dibangun menggunakan sensor berat, cahaya, dan warna yang dikendalikan oleh mikrokontroler ESP32, dengan hasil pengukuran ditampilkan melalui LCD dan dikirimkan secara real-time ke platform IoT. Nilai Haugh Unit (HU) digunakan sebagai acuan untuk melatih model klasifikasi, di mana algoritma K-Nearest Neighbors (KNN) menunjukkan performa terbaik. Hasil penelitian memperlihatkan sistem mampu mencapai akurasi 89% dalam prediksi HU, sehingga berpotensi digunakan sebagai solusi non-destruktif dalam klasifikasi mutu telur pada skala industri peternakan.
Co-Authors Anisa, Widya Asrizal Harman Amir Junita, Novia Mairizwan, Mairizwan Matondang, Anggun Sisri Br. Mulyadi, Endri Putri, Sylvia Delfi Mardiana Susalam, Malikil Kudus Yenni Darvina Yohandri Bow Yulkifli Yulkifli Zulma, Degito