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All Journal AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Inotera Progressive Physics Journal InSTEM
Erlinda Ratnasari Putri
Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Unversitas Mulawarman, Jl. Barong Tongkok No.4 Kampus Gunung Kelua, Samarinda, Indonesia (75123)
Agriculture, Biological Sciences & Forestry Astronomy Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Upaya Peningkatan Minat Belajar Sains Fisika di SDN 022 Samarinda Utara Melalui Pelatihan Pengukuran Dasar Rahmawati Munir; Mislan Mislan; Ahmad Zarkasi; Erlinda Ratnasari Putri; Wahidah Wahidah; Idris Mandang
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 4 (2023): November
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i4.11119

Abstract

Upaya peningkatkan minat siswa terhadap sains fisika harus dari usia karena selama ini bidang fisika masih dianggap pelajaran yang sulit . Tujuan pengabdian masyarakat ini adalah melaksanakan pembelajaran pengukuran dasar di SDN 022 Samarinda Utara. Khalayak sasaran merupakan siswa kelas 4-6 berjumlah 25 orang yang dipilih secara acak. Alat ukur dasar yang digunakan adalah mistar, jangka sorong, mikrometer, gelas ukur dan bahan-bahan yaitu kertas, batu, pasir, telur dan gelas. Tahapan pelaksanaan kegiatan penjelasan nama dan fungsi alat ukur, contoh penggunaan alat ukur dan praktek oleh siswa. Pemantauan dan dievaluasi dilakukan terhadap: pengalaman dan pemahaman alat ukur, ketrampilan penggunaan alat, apakah kegiatan menarik bagi peserta, saran/masukan kegiatan praktek di sekolah dan saran/masukan untuk kampus. Hasil menunjukkan, dari seluruh alat ukur yang familiar adalah mistar, sedangkan yang lain sebatas tahu dari gambar dan tidak pernah mempraktekan. Sebaiknya kegiatan praktikum di sekolah dapat dilaksanakan secara rutin dan berhubungan dengan kehidupan sehari-hari, dan untuk mendukung hal tersebut sekolah dan Universitas Mulawarman berkolaborasi secara berkelanjutan dalam bentuk kesepakatan sekolah mitra.
Pengaruh Posisi Penyinaran Radiasi Berkas Foton di Titik Axis dan Tepi Lapangan Terhadap Dosis Serap pada Pesawat Linac Nur Alya; Robert Janssen Stevenly; Pratiwi Sri Wardani; Erlinda Ratnasari Putri
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID307

Abstract

Radiotherapy is a medical treatment that uses ionizing radiation to kill cancer cells using a Linear Accelerator (Linac). One of the errors in radiotherapy irradiation can occur because the radiation beam that comes out is not in accordance with the planning. Therefore, radiation absorbed dose measurement is needed to carry out as a quality assurance to control the accuracy and suitability of the dose to be received by the patient by following the standards of the Technical Report Series (TRS) 398. This study was conducted at Radiotherapy Installation of RSUD A.W. Sjahranie Samarinda. In the measurement of radiation absorbed dose, the detector was placed in the center of the water phantom with a certain depth and placed in an axis position perpendicular to the radiation source. The detector is not only placed in the axis position, but also placed on the 4 edges of the field with the aim of knowing the effect of the location of the detector on the absorbed dose on the Linac plane. Medium water phantom, Farmer type ionization detector with a depth of 10 cm, and radiation source distance to the phantom surface of 100 cm were applied in this study. The measurement deviation results at the axis position and 4 field edges are 0.01%, 0.06%, 0.03%, 0.05%, and 0.05%. These values are within the tolerance limits written in the IAEA TRS 398 protocol, which is ± 2%. This states that the radiation absorbed dose by the water phantom is homogeneous in all directions.
Socialization of Making Egg Shell Powder as a Water Purifying Material in Senoni Village, Sebulu District, Kutai Kartanegara Regency Zarkasi, Ahmad; Ratnasari Putri, Erlinda; Nurhanafi, Kholish; Hamdani, Dadan; Perdana, Akbar; Nurohman, Ali; Munir, Rahmawati
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 2 (2023): November
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i2.463

Abstract

The production of eggshell powder as a water purifier has the potential to be utilized in Senoni Village, Sebulu District, Kutai Kartanegara Regency, East Kalimantan. Based on the results of initial observations the majority of residents there use Mahakam river water for daily needs where the water is still classified as cloudy. The purpose of implementing Community Service Activities is through socializing the production and utilization of eggshell powder as a water purifier and providing assistance through training activities on the powder as a water purifier. The approach method used were the lecture method, demonstration method, and mentoring method. Furthermore, the stages of socialization implementation as a solution to overcome the problems are as follows: 1) sample preparation stage, 2) socialization preparation stage, 3) implementation stage, and 4) evaluation stage. The results of the activity showed that an increase of 84% of participants knew the procedure for making eggshell flour, and 60% felt that it was very easy to make so it was very possible for participants to make it independently at their respective homes. This activity went well and smoothly without any significant problems. Participants are interested and want to implement the new knowledge that has been obtained through this socialization method, scientific findings results, and a short conclusion. The abstract should only be typed in one paragraph and one-column format.
Analisis Variasi Sudut Wedge pada Treatment Planning System Berdasarkan Dose Volume Histogram (DVH) pada Ca Mammae Sinistra Nurjannah, Sri; Robert Janssen Stevenly; Kadek Subagiada; Erlinda Ratnasari Putri
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID352

Abstract

Breast cancer ranks first in terms of the highest number of cancers in Indonesia and is one of the first contributors to cancer deaths. According to IARC, radiotherapy is one of the most important modalities in the treatment of breast cancer. Radiotherapy is a type of treatment that uses ionizing radiation to kill cancer cells without damaging surrounding healthy tissue. To obtain an even or homogeneous dose distribution on an uneven skin surface, a wedge is used so that the radiation given to the tumor area is truly optimal and the surrounding healthy tissue receives a minimum dose. This research was carried out by evaluating the Planning Target Volume (PTV) value based on ICRU-83 and dose distribution in Organs at Risk (OAR) based on QUANTEC standards at four different wedge angles, namely 15°, 30°, 45°, and 60°, used the 3D-CRT technique of tangential radiation with a dose of 50 Gy in 25 fractions on 5 left-sided breast cancer patients. The research results showed that the average Homogeneity Index (HI) values for the 15°, 30°, 45° and 60° wedges were 0.286, 0.346, 0.436 and 0.578, respectively. In the left and right lung dose distribution, the results obtained for the 15°, 30°, 45°, and 60° wedge were respectively 2231.4 and 116.2 cGy, 2257.8 and 114.6 cGy, 2141 and 100 cGy, and 2059.4 and 88.8 cGy. For the average dose distribution to the heart, the values obtained at the 15°, 30°, 45°, and 60° wedges were 2005.6 cGy, 2040.4 cGy, 1930.6 cGy, and 1844.4 cGy, respectively. where the average dose received by OAR is still below the limit allowed by QUANTEC. Using a wedge angle of 15° provides a homogeneous dose distribution for the PTV and a wedge angle of 60° provides the lowest dose distribution for the OAR.
Comparison of Photon Dose Distribution in Breast Cancer Using 3DCRT and Half Beam Techniques Yusrani, Nurrohimawati; Robert Janssen Stevenly; Rahmawati Munir; Erlinda Ratnasari Putri
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID359

Abstract

Radiotherapy planning can be done with 3D Conformal Radiotherapy (3DCRT) and Half Beam. The success of radiotherapy planning is considered by comparing the isodose curve, Dose Volume Histogram (DVH), Organs At Risk (OAR), Homogeneity Index (HI), and Conformity Index (CI) obtained by the 3DCRT and Half Beam techniques. This study used data from 5 patients at the Radiotherapy Installation at A.W. Hospital. Sjahranie Samarinda with radiation planning of 5000 cGy (25×2 Gy) for breast cancer. The two radiation plans used gantry angles of 310˚ and 120˚. The calculated dose distribution value can be seen through the 90%, 95% PTV dose, and OAR absorbed dose. PTV doses of 90% and 95% in the 3DCRT technique covered the target well. The radiation dose values of the 3DCRT technique at PTV 90% were around 4860 cGy – 4930 cGy and PTV 95% were around 4750 cGy – 4840 cGy. Meanwhile, the Half Beam technique could not cover the target well. It was because the radiation dose values received by the Half Beam technique at 90% PTV were around 780 cGy – 4860 cGy and 95% PTV were around 2210 cGy – 5020 cGy. The OAR absorbed doses values for the 3DCRT and Half Beam techniques were still within the safe limits of tolerance according to QUANTEC. Meanwhile, the HI and CI values in the 3DCRT technique were closer to the rules of ICRU Report 83 of 2010 compared to the Half Beam technique. Therefore, from the values that have been obtained, the success rate of the radiotherapy planning process after measurements is shown in the 3DCRT technique. It has the value of more efficient dose calculations and can be used as a reference in optimizing dose distribution to patients.
Analisis Perbandingan Detektor Geiger Muller dan Scintillation dalam Aplikasi Klinik dan Proteksi Radiasi di Rumah Sakit Aisya Villea Rania Az Zahra; Dzakya Ilmi; Erlinda Ratnasari Putri
Progressive Physics Journal Vol. 7 No. 1 (2026): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/k1ygrd80

Abstract

The use of ionizing radiation in medical procedures requires accurate and reliable monitoring to ensure the safety of healthcare workers and patients. Radiation detectors such as Geiger–Müller (GM) and scintillation detectors are widely utilized in hospitals, yet they differ significantly in their working principles, sensitivity, and suitability for clinical and protection purposes. This study aims to compare the performance of GM and scintillation detectors through a literature review approach. Articles were collected from Google Scholar using keywords related to GM detectors, scintillation detectors, clinical applications, and radiation protection. Selected studies were examined based on operational mechanisms, sensitivity, dose-rate range, energy discrimination capability, and practical use in hospital settings. The analysis shows that GM detectors operate through gas ionization and produce pulses of uniform amplitude, enabling only the counting of radiation events without providing energy information. These characteristics make GM detectors more appropriate for environmental surveillance, background monitoring, and high-dose alert systems due to their wide measurement range and stable response. In contrast, scintillation detectors such as NaI(Tl) generate light output proportional to the absorbed energy, allowing spectral analysis, radionuclide identification, and more accurate dose assessment. Their high sensitivity and superior energy resolution make them more suitable for clinical tasks, including gamma spectroscopy, nuclear medicine imaging, radiotherapy dose verification, and beam quality assessment. Overall, GM detectors are advantageous for routine radiation protection monitoring, while scintillation detectors are preferred for clinical applications requiring precise measurement and energy characterization.
Studi Komparatif Respons Energi dan Sensitivitas TLD-100 dan TLD-100H pada Radiasi Foton LINAC 6 MV Ega Salsa Billa; Aulia Gamboa Rodriques; Erlinda Ratnasari Putri
Progressive Physics Journal Vol. 7 No. 1 (2026): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/k866t416

Abstract

Accurate radiation dose measurement is essential in radiotherapy dosimetry, particularly for treatments delivered using 6 MV photon beams from a Linear Accelerator (LINAC). Thermoluminescent dosimeters (TLDs) are extensively used in clinical practice due to their small dimensions, near tissue-equivalent response, and reliable dosimetric performance. Among these, TLD-100 (LiF:Mg,Ti) has long been established as a reference dosimeter, while TLD-100H (LiF:Mg,Cu,P) has been developed to provide enhanced sensitivity. This study presents a comparative evaluation of the energy response and sensitivity of TLD-100 and TLD-100H under 6 MV LINAC photon irradiation, based on a critical review of previous experimental, Monte Carlo, and clinical studies. The reviewed results indicate that TLD-100 exhibits a stable energy response with relatively low energy dependence in high-energy photon beams, supporting its suitability for clinical dose verification. In contrast, TLD-100H demonstrates markedly higher sensitivity, making it particularly advantageous for low-dose and scattered radiation measurements, albeit with increased susceptibility to variations in irradiation conditions and calibration procedures. These findings highlight that the choice of thermoluminescent dosimeter in radiotherapy should be guided by the intended dosimetric application, with careful consideration of the balance between energy response stability and sensitivity.
Co-Authors Ahmad Zarkasi Aisya Villea Rania Az Zahra Aulia Gamboa Rodriques Dadan Hamdani Dzakya Ilmi Ega Salsa Billa Idris Mandang Kadek Subagiada Kholis Nurhanafi Mislan Mislan Nur Alya Nurjannah, Sri Nurohman, Ali Perdana, Akbar Pratiwi Sri Wardani Rahmawati Munir Robert Janssen Stevenly Robert Janssen Stevenly Yusrani, Nurrohimawati