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Ali Khumaeni
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Department of Physics Faculty of Science and Mathematics Diponegoro University Jl Prof Soedharto SH, Tembalang, Semarang, Indonesia
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Journal of Physics and Its Applications
Published by Universitas Diponegoro
ISSN : -     EISSN : 26225956     DOI : 10.14710
Core Subject : Science,
Astronomy Earth & Planetary Sciences Materials Science & Nanotechnology Physics
Journal of Physics and Its Applications (JPA) (e-ISSN: 2622-5956) is open access, International peer-reviewed journal that publishes high-novelty and original research papers and review papers in the field of physics including Radiation Physics, Materials, Geophysics, Theoretical Physics, Instrumentation and Electronics, Medical Physics, Biomedical Physics, Chemical Physics, Mathematical Physics, and Applied Physics. The JPA publishes two issues annually (May and November). The journal is published by Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Indonesia.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 92 Documents
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Carboxymethyl Cellulose-Stabilized Platinum Nanoparticles Synthesized by Pulsed Laser Ablation for Enhanced CT Scan Contrast Wahyuddin, Wahyuddin; Jonathan, Felix; Hidayanto, Eko; Khumaeni, Ali
Journal of Physics and Its Applications Vol 7, No 4 (2025): November 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i4.29925

Abstract

This study demonstrates the performance of platinum nanoparticles (Pt NPs) as contrast agents for computed tomography (CT). Synthesized through pulsed laser ablation, Pt NPs were stabilized in carboxymethyl cellulose (CMC). In CT imaging evaluations, the CMC-stabilized Pt NPs generated significantly higher Hounsfield Unit (HU) values and contrast-to-noise ratio (CNR) than both their DIW-based counterparts and a conventional iodine-based agent. Remarkably, this enhanced contrast was achieved at substantially lower ppm concentrations, highlighting the potential of CMC-stabilized Pt NPs to offer a more efficient and powerful alternative to current clinical standards.
Innovation of Portable Tectonic Earthquake Detection System with Arduino Uno: An Affordable Early Warning System Solution Hamidah, Selfi Nur; Putri, Davina Razaktya Kayla; Rizqullah, Muhammad Kalvin Al Azhaar; Urrofiqoh, Syita; Hawa, Asfa Malia; Nurita, Tutut; Widodo, Wahono
Journal of Physics and Its Applications Vol 7, No 4 (2025): November 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i4.25201

Abstract

Indonesia, located in a highly seismic region due to the convergence of the Indo-Australian, Eurasian, and Pacific plates, requires affordable earthquake early warning systems. This research aims to develop an easy-to-use, portable tectonic earthquake detection system based on the Arduino Uno platform. The methodology encompassed the design of hardware and software, the installation of accelerometer sensors, and the programming of the Arduino to detect ground vibration intensity. Test results demonstrate that the system is sensitive to changes in vibration and can provide an audible warning via a buzzer when a predefined vibration threshold is exceeded. Although its accuracy is lower than that of professional seismographs, the system presents an economical solution for deployment in remote areas. Future development could incorporate GPS sensors and artificial intelligence to enhance its accuracy and expand its applicability across various disaster scenarios.

Page 10 of 10 | Total Record : 92

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